/* ============================================================
   Polymath — editorial memory palace
   Tokens, type system, domain tints, two modes
   ============================================================ */

:root {
  /* Paper (light) */
  --paper:        #f4efe4;
  --paper-deep:   #ebe4d4;
  --paper-soft:   #faf6ec;
  --ink:          #1d1915;
  --ink-soft:     #3a332a;
  --ink-mute:     #6c6458;
  --ink-faint:    #9a9287;
  --rule:         #c9bfad;
  --rule-soft:    #d9d0bd;

  /* Accent — oxblood */
  --accent:       oklch(0.42 0.12 25);
  --accent-deep:  oklch(0.34 0.13 25);
  --accent-tint:  oklch(0.92 0.03 25);

  /* Domain tints — colored endpapers, not candy */
  --d-math:       oklch(0.72 0.055 260);   /* slate blue */
  --d-phys:       oklch(0.70 0.055  40);   /* terracotta */
  --d-cs:         oklch(0.70 0.050 150);   /* fern */
  --d-bio:        oklch(0.72 0.055 110);   /* olive */
  --d-chem:       oklch(0.72 0.055 320);   /* plum */
  --d-econ:       oklch(0.72 0.055  85);   /* ochre */
  --d-phil:       oklch(0.72 0.035 250);   /* dove */
  --d-hist:       oklch(0.68 0.060  20);   /* oxblood light */
  --d-art:        oklch(0.72 0.050 350);   /* rose */
  --d-sys:        oklch(0.70 0.040 200);   /* steel */
  --d-mind:       oklch(0.72 0.055 290);   /* lavender */
  --d-earth:      oklch(0.70 0.060 195);   /* pale-blue-dot teal */

  /* Scales */
  --gut: 32px;
  --pad: 48px;

  /* Type */
  --serif: "Fraunces", "EB Garamond", Georgia, serif;
  --sans:  "Inter Tight", -apple-system, system-ui, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, Menlo, monospace;

  /* Responsive breakpoints — referenced for documentation / future
     custom-property-aware queries. Today, native @media (max-width:
     <bp>) rules embed the numeric value directly since CSS doesn't
     support var() inside media-query conditions. */
  --bp-phone:   480px;
  --bp-tablet:  720px;
  --bp-desktop: 1024px;

  color-scheme: light;
}

[data-mode="dark"] {
  /* Reading lamp on dark walnut */
  --paper:        #1a1612;
  --paper-deep:   #120f0c;
  --paper-soft:   #221d18;
  --ink:          #ece3d1;
  --ink-soft:     #d0c6b3;
  --ink-mute:     #968c7a;
  --ink-faint:    #5e5648;
  --rule:         #3a3229;
  --rule-soft:    #2a241d;

  --accent:       oklch(0.68 0.10 25);
  --accent-deep:  oklch(0.78 0.10 25);
  --accent-tint:  oklch(0.28 0.04 25);

  --d-math:       oklch(0.58 0.06 260);
  --d-phys:       oklch(0.60 0.07  40);
  --d-cs:         oklch(0.58 0.055 150);
  --d-bio:        oklch(0.60 0.06 110);
  --d-chem:       oklch(0.56 0.06 320);
  --d-econ:       oklch(0.62 0.06  85);
  --d-phil:       oklch(0.56 0.035 250);
  --d-hist:       oklch(0.56 0.07  20);
  --d-art:        oklch(0.58 0.055 350);
  --d-sys:        oklch(0.58 0.04 200);
  --d-mind:       oklch(0.58 0.06 290);
  --d-earth:      oklch(0.58 0.06 195);

  color-scheme: dark;
}

[data-accent="blue"] {
  --accent:      oklch(0.42 0.09 255);
  --accent-deep: oklch(0.34 0.10 255);
  --accent-tint: oklch(0.92 0.025 255);
}
[data-mode="dark"][data-accent="blue"] {
  --accent:      oklch(0.72 0.09 255);
  --accent-deep: oklch(0.82 0.09 255);
  --accent-tint: oklch(0.28 0.04 255);
}
[data-accent="ochre"] {
  --accent:      oklch(0.52 0.10 70);
  --accent-deep: oklch(0.42 0.11 70);
  --accent-tint: oklch(0.93 0.04 85);
}
[data-mode="dark"][data-accent="ochre"] {
  --accent:      oklch(0.76 0.10 75);
  --accent-deep: oklch(0.84 0.10 75);
  --accent-tint: oklch(0.30 0.04 75);
}

[data-serif="spectral"] { --serif: "Spectral", Georgia, serif; }
[data-serif="garamond"] { --serif: "EB Garamond", Georgia, serif; }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  transition: background 240ms ease, color 240ms ease;
}

/* tiny scroller */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--rule); border-radius: 999px; border: 3px solid var(--paper); }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- primitives ---------- */

.smallcaps {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.folio {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.rule {
  height: 1px;
  background: var(--rule);
  border: 0;
}
.rule-soft { background: var(--rule-soft); }
.rule-double {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  height: 4px;
}

.serif  { font-family: var(--serif); }
.sans   { font-family: var(--sans); }
.mono   { font-family: var(--mono); font-variant-numeric: tabular-nums; }

.dropcap::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  float: left;
  font-size: 4.2em;
  line-height: 0.88;
  padding: 0.06em 0.1em 0 0;
  color: var(--accent);
}

/* ---------- app shell ---------- */

.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

/* ---------- sidebar nav ---------- */

.nav {
  border-right: 1px solid var(--rule);
  background: var(--paper);
  padding: 28px 22px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.wordmark {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 2px;
}
.wordmark .rule { margin-bottom: 4px; width: 46px; background: var(--ink); }
.wordmark .mark {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -0.01em;
  line-height: 1;
}
.wordmark .mark em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.wordmark .sub {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 6px;
}

.nav-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-group + .nav-group {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule-soft, var(--rule));
}
.nav-group-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 0 0 4px 2px;
}

.nav-item {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: baseline;
  padding: 8px 6px 8px 2px;
  cursor: pointer;
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -12px;
  transition: background 120ms ease, color 120ms ease;
  gap: 8px;
}
.nav-item:hover { color: var(--ink); background: var(--paper-deep); }
.nav-item.active {
  color: var(--ink);
  border-left-color: var(--accent);
  background: transparent;
}
.nav-item .num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.nav-item .label {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.005em;
}
.nav-item.active .label { font-weight: 500; }
.nav-item .kbd {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
}

.nav-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.nav-foot .row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.05em;
}
.nav-foot .row b { color: var(--ink); font-weight: 500; }

.mode-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--rule);
  padding: 4px 8px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  cursor: pointer;
  text-transform: uppercase;
  border-radius: 1px;
}
.mode-toggle:hover { color: var(--ink); border-color: var(--ink-mute); }
.mode-toggle .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink);
}
[data-mode="dark"] .mode-toggle .dot { background: var(--paper); border: 1px solid var(--ink); }

/* ---------- main ---------- */

.main {
  min-height: 100vh;
  position: relative;
}

.page {
  padding: 44px 56px 72px 56px;
  max-width: 1220px;
}
.page.wide { max-width: none; }
.page.bleed { padding: 0; max-width: none; }

/* "← {Domain}" back chip at the top of the concept page. Quiet by
   default; the arrow nudges left on hover to telegraph the destination. */
.concept-back-row {
  margin: -8px 0 18px;
}
.concept-back-btn {
  appearance: none; -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 5px 14px 5px 11px;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--serif);
  font-size: 12.5px; font-style: italic;
  color: var(--ink-mute);
  cursor: pointer;
  transition: color .12s, border-color .12s, background .12s;
}
.concept-back-btn:hover,
.concept-back-btn:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  background: color-mix(in oklch, var(--accent) 6%, transparent);
  outline: none;
}
.concept-back-arrow {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
  color: var(--ink-mute);
  transition: transform .14s, color .12s;
}
.concept-back-btn:hover .concept-back-arrow,
.concept-back-btn:focus-visible .concept-back-arrow {
  transform: translateX(-2px);
  color: var(--accent);
}
.concept-back-label {
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* running head */
.runhead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--rule);
}
.runhead .title {
  font-family: var(--serif);
  font-size: 13px;
  font-style: italic;
  color: var(--ink-mute);
  letter-spacing: 0.01em;
}
.runhead .meta {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- illustration plate ---------- */

.plate {
  position: relative;
  background: var(--paper-soft);
  overflow: hidden;
  isolation: isolate;
}
.plate::before {
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 3px, color-mix(in oklab, var(--ink) 3%, transparent) 3px 4px);
  opacity: 0.5;
  mix-blend-mode: multiply;
  pointer-events: none;
}
[data-mode="dark"] .plate::before { mix-blend-mode: screen; opacity: 0.3; }
.plate::after {
  content: "";
  position: absolute; inset: 0;
  border: 1px solid var(--rule);
  pointer-events: none;
}

.plate .glyph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--serif);
  font-weight: 300;
  color: var(--ink);
  line-height: 1;
  font-feature-settings: "ss01", "ss02";
}
.plate .plate-img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
}
[data-mode="dark"] .plate .plate-img {
  /* Render the cream sumi-e plate as-is on dark mode rather than inverting —
     inversion loses the ink-bleed character that makes sumi-e work. The plate
     reads as a softly-lit window inset into the walnut frame. Slight brightness
     dim keeps it from glowing against the surrounding dark UI. */
  mix-blend-mode: normal;
  filter: brightness(0.9);
}
.plate .cap {
  position: absolute;
  left: 12px;
  bottom: 10px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.plate .no {
  position: absolute;
  left: 12px;
  top: 10px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.plate .dom-tag {
  position: absolute;
  right: 12px;
  top: 10px;
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.plate .dom-tag .swatch {
  width: 8px; height: 8px; background: var(--d);
  display: inline-block;
}

/* tinted endpaper variant */
.plate.tint { background: color-mix(in oklab, var(--d) 22%, var(--paper-soft)); }
[data-mode="dark"] .plate.tint { background: color-mix(in oklab, var(--d) 30%, var(--paper-soft)); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 18px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease, transform 80ms ease;
  border-radius: 0;
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn .kbd {
  font-family: var(--mono);
  font-size: 10px;
  opacity: 0.7;
  border: 1px solid currentColor;
  padding: 1px 5px;
  letter-spacing: 0.04em;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
.btn-ghost:hover { background: var(--paper-deep); border-color: var(--ink-mute); color: var(--ink); }

/* ---------- generic card frame ---------- */

.frame {
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  padding: 24px;
}
.frame.flat { background: transparent; }

/* ---------- utility ---------- */

.stack > * + * { margin-top: 14px; }
.row { display: flex; }
.between { justify-content: space-between; }
.middle { align-items: center; }
.baseline { align-items: baseline; }
.gap-s { gap: 8px; } .gap-m { gap: 16px; } .gap-l { gap: 24px; } .gap-xl { gap: 40px; }
.mute { color: var(--ink-mute); }
.faint { color: var(--ink-faint); }
.accent { color: var(--accent); }
.tabular { font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }

kbd {
  font-family: var(--mono);
  font-size: 10.5px;
  border: 1px solid var(--rule);
  padding: 2px 6px;
  color: var(--ink-soft);
  background: var(--paper);
  border-radius: 2px;
  box-shadow: 0 1px 0 var(--rule);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   STUDY — tricky multiple choice with spaced repetition
   ============================================================ */

.study-wrap {
  min-height: 100vh;
  background: var(--paper);
  padding: 0;
  display: flex;
  flex-direction: column;
}
.study-empty {
  margin: 96px auto;
  max-width: 540px;
  text-align: center;
  font-family: var(--serif);
  color: var(--ink-soft);
}
.study-empty-h {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
  color: var(--ink);
}

.study-chrome {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px 40px 18px 40px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.chrome-l { display: flex; gap: 10px; align-items: center; }
.chrome-c { justify-self: center; }
.chrome-r { justify-self: end; display: flex; gap: 10px; align-items: center; }
.cl-tag { color: var(--ink); font-weight: 500; }
.cl-sep { color: var(--ink-faint); }
.cl-mute { color: var(--ink-faint); text-transform: none; letter-spacing: 0.04em; font-size: 10.5px; }
.cl-exit { cursor: pointer; }
.cl-exit:hover { color: var(--ink); }

.session-dots {
  display: flex; gap: 5px; align-items: center;
}
.sdot {
  width: 14px; height: 4px; background: var(--rule);
  transition: background 160ms ease, height 160ms ease;
}
.sdot-current { background: var(--ink); height: 6px; }
.sdot-ok      { background: var(--accent); }
.sdot-miss    { background: #b04040; }

.study-card {
  margin: 56px auto 24px;
  width: min(880px, calc(100% - 80px));
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 36px 44px 32px 44px;
  display: flex;
  flex-direction: column;
}

.card-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 26px;
}
.card-domain {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--ink);
  font-weight: 500;
}
.cd-sw { width: 9px; height: 9px; background: var(--d); display: inline-block; }
.card-num { color: var(--ink-faint); }
.card-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-soft);
  text-transform: none;
  letter-spacing: 0;
  margin-left: auto;
}

.card-stem {
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1.32;
  letter-spacing: -0.005em;
  color: var(--ink);
  font-weight: 400;
  text-wrap: pretty;
  max-width: 56ch;
}

.card-rule {
  height: 1px;
  background: var(--rule-soft);
  margin: 30px 0 18px;
}

.card-options {
  display: flex;
  flex-direction: column;
}
.opt {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 14px;
  align-items: start;
  padding: 16px 8px 16px 4px;
  border-bottom: 1px solid var(--rule-soft);
  cursor: pointer;
  transition: background 140ms ease, color 140ms ease;
  color: var(--ink-soft);
}
.opt:last-child { border-bottom: 0; }
.opt:hover { background: var(--paper-2); color: var(--ink); }
.opt-letter {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
  padding-top: 3px;
}
.opt-body {
  display: flex; flex-direction: column; gap: 8px;
}
.opt-text {
  font-family: var(--serif);
  font-size: 17.5px;
  line-height: 1.45;
  letter-spacing: -0.003em;
}
.opt-why {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-mute);
  padding-left: 14px;
  border-left: 2px solid var(--rule);
  margin-top: 4px;
}
.opt-mark {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  padding-top: 2px;
}

.opt-correct {
  color: var(--ink);
  background: color-mix(in oklab, var(--accent) 8%, transparent);
}
.opt-correct .opt-letter { color: var(--accent); }
.opt-correct .opt-text { color: var(--ink); }
.opt-correct .opt-mark { color: var(--accent); }
.opt-wrong {
  color: var(--ink-mute);
}
.opt-wrong .opt-letter { color: #b04040; }
.opt-wrong .opt-mark { color: #b04040; }
.opt-dim {
  color: var(--ink-mute);
  cursor: default;
}
.opt-dim:hover { background: transparent; color: var(--ink-mute); }
.opt-correct, .opt-wrong { cursor: default; }

.card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--rule-soft);
}
.card-foot-hint {
  justify-content: flex-end;
  border-top: 0;
  padding-top: 10px;
  margin-top: 18px;
}
.cf-hint {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.card-brief, .card-next {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.card-next .kbd {
  display: inline-block;
  margin-left: 6px;
  border: 1px solid var(--paper);
  padding: 1px 6px;
  font-family: var(--mono);
  font-size: 10px;
  border-radius: 2px;
}

.card-brief-panel {
  margin-top: 22px;
  padding: 22px 4px 4px;
  border-top: 1px dashed var(--rule-soft);
  animation: cbpFade 220ms ease;
}
.cbp-plate {
  display: flex;
  justify-content: center;
  margin: 0 auto 22px;
  max-width: 520px;
}
.cbp-plate .cbp-plate-art {
  /* .plate uses absolutely-positioned children (.plate-img / .glyph),
     so it needs an explicit aspect-ratio to take up space. Matches the
     concept-hero 5/6 ratio used elsewhere. */
  width: 100%;
  aspect-ratio: 5 / 6;
}
@keyframes cbpFade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.cbp-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 14px;
}
.cbp-body {
  display: grid;
  gap: 14px;
  max-width: 72ch;
}
.cbp-p {
  margin: 0;
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--ink);
  text-wrap: pretty;
}
.cbp-drop::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 40px;
  line-height: 0.92;
  float: left;
  padding: 4px 8px 0 0;
  color: var(--accent);
}
.cbp-now {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: color-mix(in oklab, var(--accent) 6%, var(--paper-soft));
  border-left: 2px solid var(--accent);
  padding: 14px 18px;
  border-radius: 2px;
}
.cbp-now-lbl {
  display: block;
  font-style: normal;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 5px;
}
.cbp-fallback {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

/* ------ summary card ------ */

.study-summary {
  display: flex; flex-direction: column;
}
.summary-card {
  margin: 56px auto 24px;
  width: min(720px, calc(100% - 80px));
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 36px 44px 32px 44px;
}
.summary-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 18px;
}
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}
.summary-stat {
  text-align: center;
  padding: 14px 0;
  border: 1px solid var(--rule-soft);
}
.ss-num {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.ss-pct {
  font-size: 24px;
  color: var(--ink-mute);
  margin-left: 2px;
}
.ss-lbl {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 6px;
}
.summary-divider {
  height: 1px; background: var(--rule-soft);
  margin: 24px 0 20px;
}
.summary-running {
  font-family: var(--serif);
  font-size: 14.5px;
  color: var(--ink-soft);
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 28px;
}
.summary-running b { color: var(--ink); font-weight: 500; }
.summary-actions {
  display: flex;
  gap: 12px;
  margin-top: 6px;
}
.summary-misses {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--rule-soft);
}
.miss-row {
  display: grid;
  grid-template-columns: 28px 1fr 28px;
  gap: 14px;
  align-items: baseline;
  padding: 12px 4px;
  border-bottom: 1px solid var(--rule-soft);
  cursor: pointer;
  transition: background 120ms ease;
}
.miss-row:hover { background: var(--paper-2); }
.miss-glyph {
  font-family: var(--serif);
  font-size: 22px;
  text-align: center;
  color: var(--ink-mute);
}
.miss-title {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}
.miss-arrow {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink-faint);
  text-align: right;
}

/* ============================================================
   TODAY
   ============================================================ */

.today-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  padding-bottom: 22px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 40px;
}
.today-head .masthead {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
}
.today-head .masthead em { font-style: italic; color: var(--accent); font-weight: 400; }
.today-head .meta {
  text-align: right;
  display: flex; flex-direction: column; gap: 4px;
}
.today-head .meta .date {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--ink-soft);
}
.today-head .meta .issue {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.today-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
}

.lede {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 24px;
}
.lede .kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.lede h2 {
  font-family: var(--serif);
  font-size: 68px;
  font-weight: 300;
  line-height: 1;
  margin: 10px 0 0 0;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.lede h2 em { font-style: italic; color: var(--accent); font-weight: 400; }
.lede .deck {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 52ch;
  margin-top: 6px;
}
.lede .deck::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  float: left;
  font-size: 4em;
  line-height: 0.85;
  padding: 0.08em 0.12em 0 0;
  color: var(--accent);
}

.lede .cta-row {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 10px;
}
.lede .cta-row .meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}

.today-sidebar {
  display: grid;
  gap: 32px;
  align-content: start;
}

.sidebar-block .head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 6px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule);
}
.sidebar-block .head .title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--ink);
}
.sidebar-block .head .folio {
  color: var(--ink-mute);
}

/* stats row */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.stat {
  padding: 18px 20px;
  border-right: 1px solid var(--rule);
}
.stat:last-child { border-right: 0; }
.stat .n {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat .n em { font-style: italic; color: var(--accent); font-weight: 400; }
.stat .lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 10px;
}
.stat .sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 4px;
}

/* mastery bars */
.mastery-list { display: grid; gap: 10px; }
.mastery-row {
  display: grid;
  grid-template-columns: 16px 1fr 120px 48px;
  gap: 12px;
  align-items: center;
  padding: 2px 4px;
  margin: 0 -4px;
  transition: background 0.12s ease;
}
.mastery-row:hover {
  background: var(--rule-soft);
}
.mastery-row:hover .name {
  color: var(--ink);
}
.mastery-row .sw {
  width: 10px; height: 10px; background: var(--d);
}
.mastery-row .name {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-soft);
}
.mastery-row .bar {
  height: 4px;
  background: var(--rule-soft);
  position: relative;
}
.mastery-row .bar .fill {
  position: absolute; inset: 0 auto 0 0;
  background: var(--d);
}
.mastery-row .n {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  text-align: right;
}

/* sparkline card */
.spark-card .head .title { font-style: italic; }
.spark-chart {
  position: relative;
  height: 140px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  padding: 14px 18px 30px 18px;
}
.spark-chart svg { width: 100%; height: 100%; display: block; }
.spark-chart .x-labels {
  position: absolute;
  left: 18px; right: 18px; bottom: 8px;
  display: flex; justify-content: space-between;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.spark-chart .y-axis {
  position: absolute;
  top: 6px; right: 14px;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

/* queue */
.queue {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.queue-item {
  display: grid;
  grid-template-columns: 28px 44px 1fr auto;
  gap: 14px;
  padding: 12px 2px;
  align-items: center;
  border-bottom: 1px solid var(--rule-soft);
}
.queue-item .folio { color: var(--ink-faint); }
.queue-item .mini-plate {
  width: 40px; height: 40px;
  background: color-mix(in oklab, var(--d) 25%, var(--paper-soft));
  border: 1px solid var(--rule);
  position: relative;
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 22px;
  color: var(--ink-soft);
  line-height: 1;
  font-weight: 300;
}
.queue-item .title {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: -0.005em;
}
.queue-item .dom {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-left: 10px;
}
.queue-item .due {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}

/* news-strip block */
.news-strip {
  margin-top: 48px;
  border-top: 1px solid var(--ink);
  padding-top: 28px;
}
.news-strip .head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 18px;
}
.news-strip .head h3 {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: 22px; margin: 0;
}
.news-strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.news-item {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 10px;
}
.news-item .plate {
  aspect-ratio: 5/4;
}
.news-item .plate .glyph { font-size: 96px; }
.news-item .kicker {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-mute); margin-top: 6px;
}
.news-item h4 {
  font-family: var(--serif); font-weight: 400; font-size: 22px;
  margin: 0; line-height: 1.15; letter-spacing: -0.01em;
}
.news-item .blurb {
  font-family: var(--serif); font-size: 14px; color: var(--ink-soft); line-height: 1.5;
}
.news-item .meta {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; color: var(--ink-faint);
  display: flex; gap: 12px;
}

/* ============================================================
   LIBRARY
   ============================================================ */

.library-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 20px;
  margin-bottom: 36px;
}
.library-head h1 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0;
}
.library-head h1 em { font-style: italic; color: var(--accent); font-weight: 400; }
.library-head .sub {
  font-family: var(--serif); font-style: italic; font-size: 15px;
  color: var(--ink-soft); margin-top: 10px;
}
.library-head-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.library-search-input {
  font-family: var(--serif);
  font-size: 14px;
  font-style: italic;
  color: var(--ink);
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  padding: 8px 12px;
  min-width: 240px;
  outline: none;
  border-radius: 0;
  transition: border-color 120ms ease, background 120ms ease;
}
.library-search-input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}
.library-search-input:focus {
  border-color: var(--accent);
  background: var(--paper);
}
.library-controls {
  display: flex; gap: 0;
  border: 1px solid var(--rule);
  background: var(--paper-soft);
}
.library-controls .seg {
  padding: 10px 14px;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-mute); cursor: pointer;
  border-right: 1px solid var(--rule);
}
.library-controls .seg:last-child { border-right: 0; }
.library-controls .seg.active { color: var(--ink); background: var(--paper); }

.library-media-filters {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.library-media-label {
  color: var(--ink-faint);
  margin-right: 4px;
}
.library-media-pill {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  color: var(--ink-mute);
  cursor: pointer;
  border-radius: 999px;
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}
.library-media-pill:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}
.library-media-pill.active {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}
.library-media-count {
  opacity: 0.7;
  margin-left: 2px;
}
.library-media-pill:disabled {
  opacity: 0.4;
  cursor: default;
}
.library-media-pill:disabled:hover {
  color: var(--ink-mute);
  border-color: var(--rule);
}
.library-readlater-glyph,
.library-readalready-glyph {
  font-family: var(--serif);
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  vertical-align: -1px;
  margin-right: 2px;
}
.library-readalready-glyph {
  /* book emoji renders smaller than the star on most platforms */
  font-size: 11px;
}
.library-favorited-pill.active {
  /* match the heart's visual register on activation */
  border-color: var(--accent);
}
.library-favorited-glyph {
  font-family: var(--serif);
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  vertical-align: -1px;
  margin-right: 2px;
  color: var(--accent);
}

.domain-section { margin-bottom: 56px; }
.domain-bar {
  display: grid;
  grid-template-columns: 12px auto 1fr auto auto;
  align-items: baseline;
  gap: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 20px;
}
.domain-bar .sw {
  width: 12px; height: 12px; background: var(--d);
  align-self: center;
}
.domain-bar h2 {
  font-family: var(--serif); font-weight: 400; font-size: 24px;
  margin: 0; font-style: italic; letter-spacing: -0.005em;
}
.domain-bar .count {
  font-family: var(--mono); font-size: 11px; color: var(--ink-mute);
  letter-spacing: 0.08em;
}
.domain-bar .progress {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.06em;
}
.domain-bar .progress .dots { display: flex; gap: 2px; }
.domain-bar .progress .dot {
  width: 6px; height: 6px; background: var(--rule);
}
.domain-bar .progress .dot.on { background: var(--d); }

/* ─── Hierarchical history view: threads → branches → concepts ─── */
.threads-wrap { display: grid; gap: 36px; margin-top: 8px; }

.hist-thread {
  border-left: 3px solid var(--t);
  padding-left: 22px;
  position: relative;
}
.hist-thread-bar {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0 10px;
  border-bottom: 0.5px solid var(--rule, #cfc7b3);
  margin-bottom: 18px;
  cursor: pointer;
}
.hist-thread-tag {
  background: var(--t);
  color: var(--paper, #f2ece2);
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 9px;
  align-self: center;
}
.hist-thread-title {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--ink, #1a1612);
  line-height: 1.1;
}
.hist-thread-range {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute, #6f6658);
}
.hist-thread-counts {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint, #948a7a);
}
.hist-thread-counts-n { color: var(--t); font-weight: 500; }
.hist-thread-counts-m { color: var(--ink-soft, #4a4238); }
.hist-thread-counts-l { color: var(--accent, #5a1a1f); }
.hist-thread-counts-f { color: var(--t); font-style: italic; }
.hist-thread-toggle {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-mute);
}

.hist-branch { margin-bottom: 28px; }
.hist-branch:last-child { margin-bottom: 8px; }
.hist-branch-head {
  display: grid;
  grid-template-columns: auto auto auto 1fr;
  gap: 14px;
  align-items: baseline;
  margin: 6px 0 14px;
}
.hist-branch-id {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--t);
}
.hist-branch-title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.hist-branch-stats {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hist-branch-stats em { color: var(--accent); font-style: normal; }
.hist-branch-rule {
  height: 0.5px;
  background: var(--rule, #cfc7b3);
  align-self: center;
}

/* Thread tints — exposed as CSS vars on each .hist-thread */
.hist-thread { --t: var(--t-F, #2e4552); }

.concept-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 28px 24px;
}
[data-density="compact"] .concept-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 22px 18px; }
[data-density="loose"] .concept-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 36px 32px; }

.concept-card {
  display: flex; flex-direction: column; gap: 10px; cursor: pointer;
}
.concept-card .plate {
  aspect-ratio: 4/5;
}
.concept-card .plate .glyph { font-size: 82px; }
[data-density="compact"] .concept-card .plate .glyph { font-size: 64px; }
.concept-card .meta-row {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.concept-card h4 {
  font-family: var(--serif); font-weight: 400;
  font-size: 17px; margin: 0; line-height: 1.2;
  letter-spacing: -0.005em;
  overflow-wrap: anywhere;
}
.concept-card .insight {
  font-family: var(--serif); font-style: italic;
  font-size: 13.5px; color: var(--ink-soft); line-height: 1.45;
  margin: 0;
  overflow-wrap: anywhere;
}
/* Body-text match snippet on a search result. Smaller, denser, with a
   prefix tag (hook/kernel/now) showing where the term hit. */
.concept-card .lib-card-snippet {
  font-family: var(--serif);
  font-size: 12.5px; color: var(--ink-mute); line-height: 1.4;
  margin: 0; padding-top: 4px;
  border-top: 1px dotted var(--rule);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.concept-card .lib-card-snippet-from {
  font-family: var(--mono); font-size: 9.5px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-faint);
}
/* Inline highlight for the matched query inside title/insight/snippet. */
mark.lib-hi {
  background: color-mix(in oklch, var(--accent) 28%, transparent);
  color: inherit;
  padding: 0 1px; border-radius: 2px;
}
.concept-card .badges {
  display: flex; gap: 10px; align-items: center;
  font-family: var(--mono); font-size: 10px; color: var(--ink-mute);
  letter-spacing: 0.06em; text-transform: uppercase;
  padding-top: 2px;
  margin-top: auto;
}
.concept-card .pips { display: inline-flex; gap: 2px; }
.concept-card .pip { width: 5px; height: 5px; background: var(--ink); border-radius: 50%; }
.concept-card .pip.off { background: var(--rule); }

/* ============================================================
   CONCEPT PAGE
   ============================================================ */

.concept-head {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: end;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 40px;
}
.concept-hero {
  aspect-ratio: 5/6;
  min-height: 500px;
}
.concept-hero .glyph { font-size: clamp(200px, 26vw, 360px); }
.concept-title-block .breadcrumb {
  display: flex; gap: 8px; align-items: center;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 16px;
}
.concept-title-block .breadcrumb .sw { width: 8px; height: 8px; background: var(--d); }
.concept-title-block .breadcrumb .breadcrumb-link {
  cursor: pointer;
  transition: color 0.12s ease;
}
.concept-title-block .breadcrumb .breadcrumb-link:hover { color: var(--ink); }
.concept-title-block h1 {
  font-family: var(--serif); font-weight: 300;
  font-size: 64px; line-height: 1.02; letter-spacing: -0.025em;
  margin: 0;
  text-wrap: balance;
}
.concept-title-block h1 em { font-style: italic; color: var(--accent); font-weight: 400; }
.concept-title-block .insight {
  font-family: var(--serif); font-style: italic;
  font-size: 22px; color: var(--ink); line-height: 1.4;
  margin-top: 22px; text-wrap: pretty; max-width: 36ch;
}
.concept-title-block .folio-row {
  display: flex; gap: 28px; margin-top: 28px; padding-top: 18px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.04em;
}

.concept-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  padding-top: 40px;
}
.concept-prose .section-head {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-mute); margin-bottom: 12px;
}
.concept-prose .summary {
  font-family: var(--serif); font-size: 19px;
  line-height: 1.6; color: var(--ink); text-wrap: pretty;
  max-width: 60ch;
}
.concept-prose .mnemonic {
  margin-top: 36px; padding: 22px 26px;
  background: color-mix(in oklab, var(--accent) 6%, var(--paper-soft));
  border-left: 2px solid var(--accent);
  font-family: var(--serif); font-style: italic;
  font-size: 18px; color: var(--ink); line-height: 1.5;
  max-width: 60ch;
}
.concept-prose .mnemonic .lbl {
  display: block; font-style: normal;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 6px;
}

.concept-marginalia {
  display: grid; gap: 22px; align-content: start;
  padding-left: 22px; border-left: 1px solid var(--rule);
}
.concept-marginalia .block h5 {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-mute); margin: 0 0 8px 0; font-weight: 500;
}
.concept-marginalia .kv {
  display: grid; grid-template-columns: 1fr auto;
  padding: 4px 0; border-bottom: 1px dotted var(--rule);
  font-size: 13px;
}
.concept-marginalia .kv .k { font-family: var(--serif); font-style: italic; color: var(--ink-soft); }
.concept-marginalia .kv .v { font-family: var(--mono); color: var(--ink); }

/* 4 card previews */
.card-previews {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--ink);
}
.card-previews .head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 20px;
}
.card-previews .head h3 {
  font-family: var(--serif); font-style: italic; font-weight: 400;
  font-size: 26px; margin: 0;
}
.card-previews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.prev {
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  padding: 18px;
  display: grid; grid-template-rows: auto 1fr auto; gap: 14px;
  min-height: 240px;
}
.prev .lbl {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  color: var(--ink-mute); text-transform: uppercase;
  display: flex; justify-content: space-between;
}
.prev .body {
  font-family: var(--serif); font-size: 16px; line-height: 1.4;
  color: var(--ink-soft);
}
.prev .body em { color: var(--accent); font-style: italic; }
.prev .stats {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.04em; display: flex; justify-content: space-between;
  padding-top: 8px; border-top: 1px solid var(--rule-soft);
}
.prev .stats .cf-soon {
  font-style: italic;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
  text-transform: none;
}

.related-section { margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--rule); }
.related-section .head {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-mute); margin-bottom: 14px;
}
.biblio {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4px 36px;
}
.biblio li {
  list-style: none;
  padding: 10px 0;
  border-bottom: 1px dotted var(--rule);
  display: grid; grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: baseline; gap: 12px;
  font-family: var(--serif); font-size: 15px;
  cursor: pointer;
}
.biblio li:hover { color: var(--accent); }
.biblio li .num { font-family: var(--mono); font-size: 10.5px; color: var(--ink-faint); }
.biblio li .rel { font-family: var(--mono); font-size: 10px; color: var(--ink-mute); letter-spacing: 0.08em; text-transform: uppercase; }

/* ============================================================
   GRAPH
   ============================================================ */

.graph-wrap {
  position: relative;
  height: calc(100vh - 0px);
  background: var(--paper);
  overflow: hidden;
}
.graph-wrap svg { display: block; width: 100%; height: 100%; }
.graph-wrap .chrome-top {
  position: absolute; left: 40px; top: 32px; right: 40px;
  display: flex; justify-content: space-between; align-items: baseline;
  pointer-events: none;
}
.graph-wrap .chrome-top h1 {
  font-family: var(--serif); font-weight: 300; font-size: 40px;
  margin: 0; line-height: 1; letter-spacing: -0.02em;
}
.graph-wrap .chrome-top h1 em { font-style: italic; color: var(--accent); font-weight: 400; }
.graph-wrap .chrome-top .meta {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute);
  text-align: right;
}

.graph-legend {
  position: absolute; left: 40px; bottom: 32px;
  display: grid; grid-template-columns: repeat(2, auto); gap: 4px 22px;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  border: 1px solid var(--rule);
  padding: 16px 20px;
  pointer-events: auto;
}
.graph-legend .row {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-soft);
  letter-spacing: 0.04em;
}
.graph-legend .sw { width: 10px; height: 10px; background: var(--d); }

.graph-inspector {
  position: absolute; right: 40px; top: 32px; bottom: 32px;
  width: 320px;
  background: color-mix(in oklab, var(--paper) 96%, transparent);
  border: 1px solid var(--rule);
  padding: 24px;
  overflow: auto;
  display: grid; gap: 16px; align-content: start;
}
.graph-inspector .plate { aspect-ratio: 5/4; margin-bottom: 8px; }
.graph-inspector .plate .glyph { font-size: 96px; }
.graph-inspector h3 {
  font-family: var(--serif); font-weight: 400; font-size: 26px; margin: 0;
  line-height: 1.05; letter-spacing: -0.01em;
}
.graph-inspector h3 em { font-style: italic; color: var(--accent); }
.graph-inspector .insight {
  font-family: var(--serif); font-style: italic; font-size: 14px;
  color: var(--ink-soft); line-height: 1.5;
}
.graph-inspector .kv {
  display: grid; grid-template-columns: 1fr auto;
  padding: 4px 0; border-bottom: 1px dotted var(--rule);
  font-size: 12.5px;
}
.graph-inspector .kv .k { font-family: var(--serif); font-style: italic; color: var(--ink-soft); }
.graph-inspector .kv .v { font-family: var(--mono); color: var(--ink); }

.graph-controls {
  position: absolute; right: 40px; bottom: 32px;
  display: flex; gap: 4px; align-items: center;
  background: var(--paper); border: 1px solid var(--rule);
  padding: 4px;
}
.graph-controls button {
  background: transparent; border: 0; padding: 6px 10px;
  font-family: var(--mono); font-size: 11px; color: var(--ink-soft);
  cursor: pointer; letter-spacing: 0.04em;
}
.graph-controls button:hover { color: var(--ink); }

/* ============================================================
   TUTOR
   ============================================================ */

.tutor-wrap {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
}
.tutor-head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 24px 56px;
  border-bottom: 1px solid var(--rule);
}
.tutor-head .left {
  display: flex; flex-direction: column; gap: 4px;
}
.tutor-head .left .name {
  font-family: var(--serif); font-weight: 400; font-size: 22px;
  letter-spacing: -0.005em;
}
.tutor-head .left .name em { font-style: italic; color: var(--accent); }
.tutor-head .left .meta {
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.tutor-head .center {
  justify-self: center;
  font-family: var(--serif); font-style: italic; font-size: 14px;
  color: var(--ink-mute);
}
.tutor-meter {
  justify-self: end;
  display: grid;
  grid-template-columns: auto auto;
  gap: 0;
  align-items: stretch;
  border: 1px solid var(--rule);
  background: var(--paper-soft);
}
.tutor-meter .slot {
  display: grid; grid-template-rows: auto auto;
  padding: 6px 14px;
  border-right: 1px solid var(--rule);
}
.tutor-meter .slot:last-child { border-right: 0; }
.tutor-meter .lbl {
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint);
}
.tutor-meter .v {
  font-family: var(--mono); font-size: 16px; color: var(--ink);
  font-variant-numeric: tabular-nums; letter-spacing: 0.01em;
}
.tutor-meter .v.live { color: var(--accent); }

.tutor-stream {
  padding: 48px 56px 48px 56px;
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  gap: 36px;
}
.msg { display: grid; gap: 8px; }
.msg .from {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-mute);
  display: flex; gap: 14px; align-items: baseline;
}
.msg .from .time { color: var(--ink-faint); }
.msg.user .from { color: var(--ink-soft); }
.msg.ai .from { color: var(--accent); }
.msg .body {
  font-family: var(--serif); font-size: 19px; line-height: 1.6;
  color: var(--ink); text-wrap: pretty; max-width: 64ch;
}
.msg .body p { margin: 0 0 1em 0; }
.msg .body p:last-child { margin-bottom: 0; }
.msg.user .body { color: var(--ink-soft); font-style: italic; }
.msg .body sup.cite {
  font-family: var(--mono); font-size: 10px;
  color: var(--accent); letter-spacing: 0.02em;
  vertical-align: super; margin: 0 1px;
  cursor: pointer; border-bottom: 1px dotted var(--accent);
  padding: 0 2px;
}
.msg .body sup.cite:hover { background: color-mix(in oklab, var(--accent) 12%, transparent); }

.caret {
  display: inline-block;
  width: 0.5em; height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(2) infinite;
  margin-left: 2px;
}
@keyframes blink { 50% { opacity: 0; } }

.citations-foot {
  margin-top: 10px; padding-top: 10px;
  border-top: 1px dotted var(--rule);
  display: grid; gap: 4px;
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.citations-foot .cite-item {
  display: grid; grid-template-columns: 24px 1fr auto;
  gap: 10px; align-items: baseline;
  padding: 3px 0; cursor: pointer;
}
.citations-foot .cite-item .n { color: var(--accent); }
.citations-foot .cite-item .t { color: var(--ink-soft); font-family: var(--serif); font-style: italic; font-size: 13px; }
.citations-foot .cite-item:hover .t { color: var(--ink); }

.tutor-foot {
  border-top: 1px solid var(--rule);
  padding: 22px 56px 28px 56px;
  background: var(--paper);
}
.composer {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto;
  gap: 12px;
}
.composer textarea {
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink);
  padding: 18px 22px;
  resize: none;
  min-height: 80px;
  outline: none;
  border-radius: 0;
}
.composer textarea:focus { border-color: var(--ink-mute); background: var(--paper); }
.composer textarea::placeholder { color: var(--ink-faint); font-style: italic; }
.composer .row {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.08em;
}
.composer .row .hint {
  display: flex; gap: 16px;
  text-transform: uppercase;
}

/* ============================================================
   KEYBOARD OVERLAY
   ============================================================ */

.overlay-bg {
  position: fixed; inset: 0;
  background: color-mix(in oklab, var(--paper-deep) 70%, transparent);
  backdrop-filter: blur(3px);
  z-index: 90;
  display: grid; place-items: center;
  animation: fade 160ms ease;
}
[data-mode="dark"] .overlay-bg { background: color-mix(in oklab, #000 55%, transparent); }
@keyframes fade { from { opacity: 0; } }

.shortcut-card {
  width: min(880px, 92vw);
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 40px 48px 36px 48px;
  position: relative;
}
.shortcut-card::before {
  content: ""; position: absolute; inset: 6px; border: 1px solid var(--rule);
  pointer-events: none;
}
.shortcut-card .top {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-bottom: 14px; margin-bottom: 22px;
  border-bottom: 1px solid var(--ink);
}
.shortcut-card .top h2 {
  font-family: var(--serif); font-size: 32px; font-weight: 300;
  margin: 0; letter-spacing: -0.02em;
}
.shortcut-card .top h2 em { font-style: italic; color: var(--accent); font-weight: 400; }
.shortcut-card .top .folio { color: var(--ink-mute); }

.shortcut-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 40px;
}
.shortcut-grid .col h4 {
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin: 18px 0 10px 0;
}
.shortcut-grid .col h4:first-child { margin-top: 0; }
.shortcut-grid .kv {
  display: grid; grid-template-columns: 1fr auto;
  padding: 7px 0; border-bottom: 1px dotted var(--rule);
  align-items: baseline;
}
.shortcut-grid .kv .k {
  font-family: var(--serif); font-size: 14.5px; color: var(--ink);
}
.shortcut-grid .kv .v { display: flex; gap: 4px; }

.shortcut-card .bottom {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-top: 24px; padding-top: 14px; border-top: 1px solid var(--rule);
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-mute);
  letter-spacing: 0.08em;
}

/* ============================================================
   TWEAKS PANEL
   ============================================================ */

.tweaks-panel {
  position: fixed;
  right: 18px; bottom: 18px;
  width: 300px;
  background: var(--paper);
  border: 1px solid var(--ink);
  z-index: 80;
  font-family: var(--sans);
  box-shadow: 0 8px 24px -12px rgba(0,0,0,0.25);
}
.tweaks-fab {
  position: fixed;
  right: 18px; bottom: 18px;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--ink);
  color: var(--ink);
  font-size: 18px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 4px 12px -6px rgba(0,0,0,0.2);
  opacity: 0.7;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.tweaks-fab:hover { opacity: 1; transform: scale(1.05); }
/* Locale switcher — single button inside .app-userbar that cycles
   the current locale on tap. With only two supported locales the
   dropdown was overkill (and stubbornly buggy on iOS); a direct
   toggle works the same on every input modality. */
.locale-toggle {
  min-width: 44px;
  height: 32px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.12s ease, color 0.12s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
@media (hover: hover) {
  .locale-toggle:hover { border-color: var(--ink); color: var(--ink); }
}
@media (hover: none) {
  .locale-toggle:active { border-color: var(--ink); color: var(--ink); }
}

/* Mode (dark/light) toggle — sits to the left of .locale-toggle in the
   userbar. Sized to match: same 32 px height, bordered, glyph-only. */
.mode-toggle {
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.12s ease, color 0.12s ease;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
@media (hover: hover) {
  .mode-toggle:hover { border-color: var(--ink); color: var(--ink); }
}
@media (hover: none) {
  .mode-toggle:active { border-color: var(--ink); color: var(--ink); }
}

/* Native <select> variant used when 3+ locales are supported.
   Closed state is styled to match .locale-toggle; the open state is
   handed off to the browser/platform (iOS wheel, Android modal,
   desktop dropdown) — which is the point. */
.locale-select {
  min-width: 44px;
  height: 32px;
  padding: 0 28px 0 12px;
  background:
    /* small caret indicator on the right edge */
    linear-gradient(45deg, transparent 50%, var(--ink-mute) 50%) calc(100% - 12px) 14px / 5px 5px no-repeat,
    linear-gradient(135deg, var(--ink-mute) 50%, transparent 50%) calc(100% - 7px) 14px / 5px 5px no-repeat,
    transparent;
  border: 1px solid var(--rule);
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: border-color 0.12s ease, color 0.12s ease;
}
.locale-select:focus { outline: none; border-color: var(--ink); color: var(--ink); }
@media (hover: hover) {
  .locale-select:hover { border-color: var(--ink); color: var(--ink); }
}
.tweaks-panel .t-head {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-deep);
}
.tweaks-panel .t-head .title {
  font-family: var(--serif); font-style: italic; font-size: 16px;
}
.tweaks-panel .t-head .close {
  background: transparent; border: 0; font-family: var(--mono);
  font-size: 11px; color: var(--ink-mute); cursor: pointer;
}
.tweaks-panel .t-body { padding: 14px; display: grid; gap: 14px; }
.tweak .lbl {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-mute);
  margin-bottom: 6px;
}
.tweak .opts { display: flex; gap: 4px; }
.tweak .opts.opts-wrap { flex-wrap: wrap; }
.tweak .opts.opts-wrap .opt { flex: 0 0 auto; min-width: 52px; }
.tweak .opt {
  flex: 1;
  padding: 6px 0;
  text-align: center;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.06em; text-transform: uppercase;
  border: 1px solid var(--rule);
  background: var(--paper);
  cursor: pointer;
  color: var(--ink-mute);
}
.tweak .opt.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.tweak .opt:hover:not(.active) { color: var(--ink); border-color: var(--ink-mute); }

.tweak .swatches { display: flex; gap: 6px; }
.tweak .swatch {
  width: 22px; height: 22px;
  border: 1px solid var(--rule); cursor: pointer;
}
.tweak .swatch.active { outline: 1px solid var(--ink); outline-offset: 2px; }

.tweak input[type=range] {
  width: 100%;
  accent-color: var(--accent);
}

/* ============================================================
   404 / EMPTY STATES
   ============================================================ */

.empty-state {
  display: grid; place-items: center; text-align: center;
  padding: 80px 0;
}
.empty-state .plate {
  width: 160px; aspect-ratio: 1;
  margin-bottom: 28px;
}
.empty-state .plate .glyph { font-size: 100px; color: var(--accent); }
.empty-state h3 {
  font-family: var(--serif); font-size: 32px; font-weight: 300;
  letter-spacing: -0.015em; margin: 0;
}
.empty-state h3 em { font-style: italic; color: var(--accent); font-weight: 400; }
.empty-state .blurb {
  font-family: var(--serif); font-size: 16px; font-style: italic;
  color: var(--ink-soft); margin-top: 10px; max-width: 46ch;
}
.empty-state .actions { margin-top: 26px; display: flex; gap: 10px; justify-content: center; }

/* ---- small helpers ---- */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-mute);
  padding: 2px 6px; border: 1px solid var(--rule);
}
.chip .sw { width: 7px; height: 7px; background: var(--d); }

.tag {
  display: inline-block;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--ink-mute); padding: 3px 8px;
  border: 1px solid var(--rule);
}

/* link-like */
.link {
  color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--accent);
  cursor: pointer;
}
.link:hover { background: color-mix(in oklab, var(--accent) 10%, transparent); }

/* focus a node */
@keyframes nodepulse {
  0% { r: var(--r); } 50% { r: calc(var(--r) * 1.3); } 100% { r: var(--r); }
}

/* ============================================================
   EMPTY STATES · 404
   ============================================================ */

.empty-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 120px 56px 80px 56px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  justify-content: center;
}
.empty-rule-top, .empty-rule-bot {
  width: 100%;
  height: 1px;
  background: var(--rule);
  margin-bottom: 36px;
  position: relative;
}
.empty-rule-top::before, .empty-rule-bot::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -3px;
  width: 6px;
  height: 6px;
  background: var(--paper);
  border: 1px solid var(--rule);
  transform: translateX(-50%) rotate(45deg);
}
.empty-rule-bot { margin-top: 56px; margin-bottom: 18px; }

.empty-glyph {
  color: var(--ink-mute);
  margin-bottom: 28px;
  opacity: 0.85;
}
.empty-glyph svg { display: block; }

.empty-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.empty-headline {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 20px 0;
  text-wrap: balance;
}
.empty-headline em {
  font-style: italic;
  color: var(--accent);
  font-family: var(--serif);
}

.empty-sub {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto 36px auto;
  text-wrap: pretty;
}
.empty-sub b { font-weight: 500; color: var(--ink); }
.empty-sub em { font-style: italic; color: var(--accent); }

.empty-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.empty-actions .btn, .empty-actions .btn-ghost { white-space: nowrap; }

.empty-hint {
  width: 100%;
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.empty-hint .kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--rule);
  margin: 0 2px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  background: var(--paper-soft);
}

.empty-folio {
  width: 100%;
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* Study-complete stats */
.empty-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  width: 100%;
  max-width: 520px;
  margin: 4px 0 32px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.empty-stats .st {
  padding: 18px 8px;
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
}
.empty-stats .st:last-child { border-right: 0; }
.empty-stats .n {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.empty-stats .l {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* Tutor prompt chips */
.empty-prompts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
  max-width: 640px;
  margin: 4px auto 0 auto;
  text-align: left;
}
.prompt-chip {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 16px 18px;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
  transition: border-color 140ms ease, color 140ms ease, background 140ms ease;
  font-style: italic;
}
.prompt-chip:hover {
  border-color: var(--accent);
  color: var(--ink);
  background: color-mix(in oklab, var(--accent) 4%, transparent);
}
.prompt-chip .n {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-style: normal;
}
.prompt-chip .t { text-wrap: pretty; }

/* 404 — big number treatment */
.empty-404 .fortyfour {
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 28px;
  align-items: center;
  margin-bottom: 48px;
}
.empty-404 .big {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(120px, 18vw, 220px);
  line-height: 0.85;
  color: var(--accent);
  letter-spacing: -0.04em;
  font-feature-settings: "lnum", "tnum";
}
.empty-404 .hairline {
  width: 1px;
  height: 80px;
  background: var(--rule);
}
.empty-404 .side {
  text-align: left;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.empty-404 .side .line:first-child { color: var(--accent); }

/* ============================================================
   MICRO-INTERACTIONS
   ============================================================ */

/* ---- Study: card reveal flip-in ---- */
.card .reveal,
.card .insight,
.card .answer-reveal {
  animation: reveal-in 420ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  transform-origin: top left;
}
@keyframes reveal-in {
  from {
    opacity: 0;
    transform: translateY(8px) rotateX(-12deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotateX(0);
  }
}

/* Study option correct/wrong — subtle highlight pulse on reveal */
.opt-correct {
  animation: opt-correct-pulse 600ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
@keyframes opt-correct-pulse {
  0%   { background: transparent; }
  40%  { background: color-mix(in oklab, var(--accent) 18%, transparent); }
  100% { background: color-mix(in oklab, var(--accent) 8%, transparent); }
}

/* ---- Graph: node hover pulse + halo breathing ---- */
.gnode {
  cursor: pointer;
  transition: opacity 200ms ease;
}
.gnode.dim { opacity: 0.3; }
.gnode .gnode-core {
  transition: r 160ms ease-out, stroke-width 160ms ease-out;
  transform-box: fill-box;
  transform-origin: center;
}
.gnode:hover .gnode-core {
  stroke: var(--ink);
  stroke-width: 2;
  filter: drop-shadow(0 0 6px color-mix(in oklab, var(--accent) 40%, transparent));
}
.gnode.focused .gnode-halo {
  animation: halo-breathe 2.6s ease-in-out infinite;
  transform-origin: center;
  transform-box: fill-box;
}
@keyframes halo-breathe {
  0%, 100% { transform: scale(1.2); opacity: 0.6; }
  50% { transform: scale(2.2); opacity: 0; }
}

/* ---- Sparkline tooltip ---- */
.spark-tooltip {
  pointer-events: none;
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 6px 10px;
  display: grid;
  gap: 2px;
  z-index: 3;
  min-width: 64px;
  box-shadow: 0 4px 14px -6px color-mix(in oklab, var(--ink) 20%, transparent);
  animation: spark-tt-in 120ms ease-out both;
}
@keyframes spark-tt-in {
  from { opacity: 0; transform: translate(var(--tx, 10px), calc(-120% - 3px)) scale(0.96); }
  to   { opacity: 1; }
}
.spark-tooltip .t-date {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.spark-tooltip .t-val {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.spark-tooltip .t-pct {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  margin-left: 2px;
  font-weight: 400;
  letter-spacing: 0.05em;
}

/* ---- Queue item hover lift ---- */
.queue-item {
  transition: background 140ms ease, border-color 140ms ease;
  position: relative;
}
.queue-item::after {
  content: "→";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%) translateX(-6px);
  opacity: 0;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 16px;
  transition: opacity 160ms ease, transform 160ms ease;
  pointer-events: none;
}
.queue-item:hover::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}
.queue-item:hover .mini-plate {
  transform: scale(1.06);
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.queue-item .mini-plate {
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---- Plate hover on library cards ---- */
.library-plate {
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 220ms ease;
}
.library-plate:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px -16px color-mix(in oklab, var(--ink) 40%, transparent);
}
.library-plate:hover .plate {
  filter: brightness(1.04) saturate(1.1);
}
.library-plate .plate {
  transition: filter 220ms ease;
}

/* ---- Nav item "folio flag" on hover ---- */
.nav-item {
  position: relative;
  overflow: hidden;
}
.nav-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
.nav-item:hover::before,
.nav-item.active::before {
  transform: scaleY(1);
}

/* Page route transitions */
.main > * {
  animation: page-in 320ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}
@keyframes page-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Stats count-up ready */
.num-shift {
  display: inline-block;
  transition: transform 180ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---- Respect reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .opt-correct,
  .main > *,
  .gnode.focused .gnode-halo,
  .spark-tooltip {
    animation: none !important;
    transition: none !important;
  }
}

   CHRONICLE — Persistent placement card (post-grading)
   ============================================================ */
.chrono-placement {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 2px;
  padding: 18px 22px 16px;
  display: grid;
  gap: 12px;
  animation: result-in 240ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
  max-width: 920px;
}
.chrono-placement.band-perfect { border-left-color: var(--accent); }
.chrono-placement.band-close   { border-left-color: var(--ink-soft); }
.chrono-placement.band-era     { border-left-color: var(--ink-mute); }
.chrono-placement.band-miss    { border-left-color: #b04040; }
.pc-head {
  display: grid;
  gap: 6px;
}
.pc-runhead {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.pc-domain {
  position: relative;
  padding-left: 14px;
}
.pc-domain::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px; height: 8px;
  background: var(--d, var(--ink));
  border-radius: 50%;
}
.pc-band {
  letter-spacing: 0.16em;
  color: var(--ink-mute);
}
.chrono-placement.band-perfect .pc-band { color: var(--accent); }
.chrono-placement.band-miss    .pc-band { color: #b04040; }
.pc-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.18;
  margin: 0;
  color: var(--ink);
}
.pc-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pc-true {
  color: var(--accent);
  font-weight: 500;
  font-feature-settings: "tnum";
}
.pc-body {
  font-family: var(--serif);
  color: var(--ink);
  line-height: 1.55;
}
.pc-kicker {
  font-style: italic;
  font-size: 14.5px;
  color: var(--ink-soft);
  margin: 0;
  max-width: 78ch;
}
.pc-brief {
  display: grid;
  gap: 14px;
  max-width: 78ch;
}
.pc-brief-p {
  margin: 0;
  font-size: 15px;
}
.pc-brief-p.drop::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 38px;
  line-height: 0.92;
  float: left;
  padding: 4px 8px 0 0;
  color: var(--accent);
}
.pc-brief-now {
  font-size: 14px;
  background: rgba(90, 26, 31, 0.04);
  border-left: 2px solid var(--accent);
  padding: 12px 16px;
  border-radius: 2px;
}
.pc-now-lbl {
  display: block;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.pc-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--rule-soft);
  padding-top: 12px;
  margin-top: 4px;
}
.pc-pts {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
}
.pc-foot .next-btn { margin-left: auto; }

/* ============================================================
   CHRONICLE v3 — vertical ribbon + card deck (focus + context)
   ============================================================ */

.chronicle-wrap {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  background: var(--paper);
  position: relative;
  overflow: hidden;
}

/* ── chrome ── */
.chrono-chrome {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 36px 56px 18px;
  border-bottom: 1px solid var(--rule-soft);
}
.chronicle-wrap h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 48px;
  line-height: 1;
  margin: 0;
  letter-spacing: -0.01em;
}
.chronicle-wrap h1 em { color: var(--accent); font-style: italic; }
.chrono-sub {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-soft);
  font-size: 15px;
  margin-top: 6px;
}
.chrono-hud {
  display: flex;
  gap: 28px;
  align-items: center;
}
.chrono-hud .hud-row {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}
.chrono-hud .hud-k {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.chrono-hud .hud-v {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 22px;
  font-feature-settings: "tnum";
}
.chrono-hud .hud-of { color: var(--ink-faint); font-weight: 400; }

/* ── two-column body ── */
.chrono-main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 32px;
  padding: 24px 56px 24px;
  align-items: stretch;
  min-height: 0;  /* let children scroll */
}

/* ── card deck column ── */
.chrono-deck-col {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 8px;
}
.chrono-deck-stack {
  position: relative;
  height: 360px;
}
.chrono-card {
  position: absolute;
  top: calc(var(--idx) * 8px);
  left: calc(var(--idx) * -6px);
  width: 100%;
  height: 340px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 18px 18px 16px;
  display: grid;
  grid-template-rows: 200px auto;
  gap: 12px;
  box-shadow: 0 1px 0 var(--rule), 0 4px 14px rgba(26, 23, 21, 0.06);
  transition: transform 200ms cubic-bezier(0.2, 0.8, 0.2, 1), opacity 180ms ease;
  user-select: none;
  overflow: hidden;
}
.chrono-card.back {
  opacity: 0.55;
  transform: scale(0.96);
  pointer-events: none;
  filter: blur(0.4px);
}
.chrono-card.front {
  z-index: 3;
  cursor: grab;
}
.chrono-card.front:active { cursor: grabbing; }
.chrono-card.front:hover { transform: translateY(-2px); }
/* Mouse mode: keep the lifted (= currently dragged) card fully visible
   in the deck so the player can see who they're carrying. The dangling
   sprite at the pointer is an additional cue, not a replacement. */
.chrono-card.lifted {
  opacity: 1;
  transform: translateY(-4px);
  box-shadow: 0 10px 22px -10px rgba(0,0,0,0.28);
}
/* Touch mode: no dangling sprite — the deck card IS the cue. Keep it
   fully visible and visibly lifted + shadowed so the user can see it
   is "picked up" and is waiting for a tap on an era band. */
.chronicle-wrap[data-touch="true"] .chrono-card.front { cursor: pointer; }
.chronicle-wrap[data-touch="true"] .chrono-card.lifted {
  opacity: 1;
  transform: translateY(-10px);
  box-shadow: 0 14px 26px -10px rgba(0,0,0,0.32);
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
/* Era bands look tappable on touch. */
.chronicle-wrap[data-touch="true"][data-dragging="true"] .era-band { cursor: pointer; }
.chrono-card .chrono-sprite.large {
  width: 100%;
  height: 100%;
  border-radius: 2px;
}
/* Portrait sprites vary in headroom — some figures crop heads at the
   previous "center 18%" cover position. Use `contain` so the full head
   is always visible (matching the mobile rule below); paper sides
   letterbox at no aesthetic cost. */
.chrono-card .chrono-sprite.figure img {
  object-fit: contain;
  object-position: center;
}
.card-meta { min-width: 0; }
.card-kind {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  text-transform: uppercase;
}
.card-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.18;
  margin-top: 4px;
  color: var(--ink);
}
.card-insight {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink-soft);
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.chrono-deck-instr {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.chrono-deck-instr .ins-line:first-child {
  color: var(--ink);
  font-weight: 500;
}
.chrono-deck-instr .ins-line.muted { color: var(--ink-faint); }

/* ── ribbon (vertical, 6 era bands) ── */
.chrono-ribbon {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper-2);
  overflow: hidden;
  user-select: none;
}
.era-band {
  position: relative;
  flex: 1 1 0;
  min-height: 80px;
  border-top: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: 4px 148px 1fr;
  grid-template-rows: 1fr;
  transition: background 160ms ease, box-shadow 160ms ease;
  background: var(--paper-2);
}
.era-band:first-child { border-top: 0; }
.era-band.expanded {
  background: var(--paper);
  z-index: 2;
  box-shadow: inset 0 0 0 1px var(--rule);
}
.era-stripe {
  grid-column: 1;
  background: var(--t);
  opacity: 0.5;
}
.era-band.expanded .era-stripe { opacity: 1; }
.era-head {
  position: relative;
  grid-column: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 3px;
  padding: 8px 14px;
  border-right: 1px solid var(--rule-soft);
  background: var(--paper);
  z-index: 1;
}
.era-id {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  font-weight: 500;
}
.era-label {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 14px;
  line-height: 1.15;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.era-band.expanded .era-label { font-size: 15px; }
.era-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  font-feature-settings: "tnum";
}
.era-count {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--accent);
}

.era-content {
  position: relative;
  grid-column: 3;
  height: 100%;
  min-height: 0;
}

/* tick rail in expanded band */
.era-ticks {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.era-tick {
  position: absolute;
  left: 22px;
  right: 12px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
}
.era-tick-line {
  flex: 1;
  height: 1px;
  background: var(--rule-soft);
}
.era-tick-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  font-feature-settings: "tnum";
}

/* placed anchor inside a band. `--lane` (set inline) shifts the dot+label
   right when multiple contemporaries share a band, so their labels start
   at distinct x-offsets and don't overprint. Lane 0 keeps the historical
   22px gutter. */
.era-anchor {
  position: absolute;
  left: calc(22px + var(--lane, 0) * 14px);
  right: 22px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: help;
  z-index: 2;
}
.era-anchor-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--d, var(--ink));
  border: 1.4px solid var(--paper);
  box-shadow: 0 0 0 1px var(--d, var(--ink));
  flex-shrink: 0;
}
.era-anchor-label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--serif);
  font-size: 12.5px;
  background: var(--paper);
  padding: 1px 6px;
  border-radius: 2px;
}
.era-anchor-label .ea-year {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  font-feature-settings: "tnum";
}
.era-anchor-label .ea-title {
  color: var(--ink);
  font-style: italic;
}
.era-anchor.band-perfect .ea-year { color: var(--accent); }
.era-anchor.band-miss    .ea-year { color: #b04040; }
.era-band:not(.expanded) .era-anchor {
  opacity: 0.7;
}
.era-band:not(.expanded) .era-anchor-label {
  font-size: 11px;
  padding: 0 4px;
}

/* lifespan bar — vertical span from born to died for placed figures.
   Renders inside every band the lifespan crosses (clamped to the band
   bounds), with the end-cap suppressed on the side that extends. The bar
   itself is semi-transparent so the band stays readable; the end caps
   are fully solid so birth/death tick reads cleanly against the bar. */
.era-lifespan {
  position: absolute;
  left: calc(25px + var(--lane, 0) * 14px);
  width: 2px;
  background: color-mix(in srgb, var(--d, var(--ink)) 38%, transparent);
  border-radius: 1px;
  z-index: 1;
  pointer-events: none;
}
.era-band.expanded .era-lifespan {
  background: color-mix(in srgb, var(--d, var(--ink)) 58%, transparent);
  width: 2.5px;
}
.era-lifespan::before,
.era-lifespan::after {
  content: "";
  position: absolute;
  left: -3px;
  width: 8px;
  height: 1.5px;
  background: var(--d, var(--ink));
  border-radius: 1px;
}
.era-lifespan::before { top: 0; }
.era-lifespan::after  { bottom: 0; }
.era-lifespan.extends-up::before  { display: none; }
.era-lifespan.extends-down::after { display: none; }
/* fade the open end so the eye reads it as "continues past this band" */
.era-lifespan.extends-up {
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 10px);
          mask-image: linear-gradient(to bottom, transparent 0, #000 10px);
}
.era-lifespan.extends-down {
  -webkit-mask-image: linear-gradient(to top, transparent 0, #000 10px);
          mask-image: linear-gradient(to top, transparent 0, #000 10px);
}
.era-lifespan.extends-up.extends-down {
  -webkit-mask-image: linear-gradient(to bottom,
    transparent 0, #000 10px, #000 calc(100% - 10px), transparent 100%);
          mask-image: linear-gradient(to bottom,
    transparent 0, #000 10px, #000 calc(100% - 10px), transparent 100%);
}

/* drag guide line + live year readout while dragging into a band */
.era-drag-guide {
  position: absolute;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
  z-index: 4;
}
.era-drag-line {
  flex: 1;
  height: 1.4px;
  background: var(--accent);
  margin-left: 14px;
}
.era-drag-year {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: var(--accent);
  padding: 2px 8px;
  border-radius: 2px;
  font-feature-settings: "tnum";
  margin-right: 22px;
}

/* confirm dialog inline — appears at drop point */
/* ── dangle (figure follows cursor while dragging) ── */
.chrono-dangle {
  position: fixed;
  z-index: 60;
  pointer-events: none;
  transition: transform 110ms cubic-bezier(0.2, 0.8, 0.2, 1);
  filter: drop-shadow(0 6px 12px rgba(26, 23, 21, 0.18));
  width: 96px;
}
.chrono-dangle .chrono-sprite.large {
  width: 96px;
  height: 132px;
}
.chrono-dangle .chrono-sprite.figure img {
  object-fit: contain;
  object-position: center;
}

/* ── sprite primitives (re-used) ── */
.chrono-sprite {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 2px;
  flex-shrink: 0;
  background: color-mix(in oklch, var(--d) 8%, var(--paper));
  border: 1px solid color-mix(in oklch, var(--d) 30%, var(--rule));
  overflow: hidden;
}
.chrono-sprite.figure {
  background: var(--paper);
  border: 1px solid var(--rule);
}
.chrono-sprite.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.chrono-sprite.medallion {
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in oklch, var(--d) 12%, var(--paper));
  border: 1px solid color-mix(in oklch, var(--d) 40%, var(--rule));
}
.chrono-sprite.medallion .med-letter {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 26px;
  color: color-mix(in oklch, var(--d) 60%, var(--ink));
  line-height: 1;
}
.chrono-sprite.concept .glyph {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  color: color-mix(in oklch, var(--d) 60%, var(--ink));
  line-height: 1;
}
.chrono-sprite.large {
  width: 96px;
  height: 132px;
}
.chrono-sprite.large.medallion .med-letter { font-size: 56px; }
.chrono-sprite.large.concept .glyph { font-size: 56px; }

/* ── persistent placement card (post-grading) ── */
.chrono-bottom {
  padding: 0 56px 28px;
}

/* ── tooltip on placed anchors ── */
.chrono-tooltip {
  position: fixed;
  z-index: 70;
  pointer-events: none;
  transform: translate(16px, -100%);
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 0 8px 24px rgba(26, 23, 21, 0.10);
  padding: 12px 16px;
  border-radius: 2px;
  min-width: 260px;
  max-width: 360px;
  animation: tt-in 120ms ease-out both;
}
@keyframes tt-in {
  from { opacity: 0; transform: translate(16px, calc(-100% + 4px)); }
  to   { opacity: 1; transform: translate(16px, -100%); }
}
.tt-runhead {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule-soft);
}
.tt-domain { position: relative; padding-left: 14px; }
.tt-domain::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 8px; height: 8px;
  background: var(--d, var(--ink));
  border-radius: 50%;
  transform: translateY(-50%);
}
.tt-year {
  font-feature-settings: "tnum";
  color: var(--accent);
  font-weight: 500;
}
.tt-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.2;
}
.tt-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  margin-top: 4px;
  letter-spacing: 0.04em;
}
.tt-insight {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 8px;
  line-height: 1.45;
}
.tt-hook {
  font-family: var(--serif);
  font-size: 12.5px;
  color: var(--ink);
  margin-top: 8px;
  line-height: 1.45;
  border-top: 1px solid var(--rule-soft);
  padding-top: 8px;
}

/* ── round summary ── */
.chrono-summary-shroud {
  position: fixed;
  inset: 0;
  background: color-mix(in oklch, var(--paper) 92%, var(--ink));
  display: grid;
  place-items: center;
  z-index: 80;
  animation: shroud-in 240ms ease-out both;
}
@keyframes shroud-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.chrono-summary {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 48px 64px;
  border-radius: 2px;
  min-width: 480px;
  text-align: center;
  box-shadow: 0 24px 80px rgba(26, 23, 21, 0.18);
}
.summary-runhead {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 12px;
}
.chrono-summary h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 56px;
  line-height: 1;
  margin: 0 0 24px;
}
.chrono-summary h2 em {
  font-style: italic;
  color: var(--accent);
}
.summary-breakdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 24px 0 32px;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
  padding: 14px 0;
}
.bd-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.bd-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.bd-count {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 28px;
  color: var(--ink);
}
.bd-row.band-perfect .bd-count { color: var(--accent); }
.bd-row.band-miss    .bd-count { color: #b04040; }
.summary-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}
.summary-actions .btn.primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

/* ── mobile / narrow stack ── */
@media (max-width: 880px) {
  .chrono-main {
    grid-template-columns: 1fr;
    padding: 16px 20px;
    gap: 18px;
  }
  /* Card sprite was previously 100px of a 200px card — too short for
     square portrait sprites with `object-fit: cover`, which clipped the
     face out at top and bottom. Raise the card so the full head is
     visible (figure renders in `contain` mode, letterboxed sides) AND
     the text rows below have room to render — title, kind label, and
     the 3-line italic insight need ~120px to land without clipping. */
  .chrono-deck-stack { height: 420px; }
  .chrono-card { height: 400px; grid-template-rows: 200px auto; }
  .chrono-card .chrono-sprite.figure img {
    object-fit: contain;
    object-position: center;
  }
  .chrono-ribbon { min-height: 480px; }
  .chrono-chrome { padding: 22px 20px 14px; }
  .chrono-bottom { padding: 0 20px 20px; }
}

/* ── reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .era-band,
  .chrono-card,
  .chrono-dangle,
  .chrono-tooltip,
  .chrono-summary-shroud {
    animation: none !important;
    transition: none !important;
  }
}

/* placement card auto-dismiss controls */
.chrono-placement { position: relative; }
.pc-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 50%;
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  display: grid;
  place-items: center;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.pc-close:hover {
  background: var(--paper-2);
  color: var(--ink);
  border-color: var(--ink);
}
.pc-hint {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* While the user is actively dragging a card, kill the band-flex
   transition. Otherwise the cursor's clientY maps onto a moving band
   (its top edge sliding up as it expands) and the year readout drifts
   from where the user dropped. Hover-only era expansion keeps its
   smooth transition unchanged. */
.chronicle-wrap[data-dragging="true"] .era-band {
  transition: none;
}

/* round-filter segmented control in the chrome */
.hud-filter {
  display: flex;
  align-items: center;
  gap: 10px;
}
.hud-filter .hud-k {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.hud-filter .seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.hud-filter .seg-btn {
  background: transparent;
  border: 0;
  padding: 6px 12px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-mute);
  cursor: pointer;
  border-right: 1px solid var(--rule);
  transition: background 120ms ease, color 120ms ease;
}
.hud-filter .seg-btn:last-child { border-right: 0; }
.hud-filter .seg-btn:hover { color: var(--ink); background: var(--paper-2); }
.hud-filter .seg-btn.active {
  background: var(--ink);
  color: var(--paper);
}

/* placed anchors are clickable — make that obvious */
.era-anchor { cursor: pointer; }
.era-anchor:hover .era-anchor-label {
  background: var(--paper-2);
}

/* ────────────────────────────────────────────────────────────────────
   User badge · Sign-in modal · Notes · Phase-B brief steps · summary
   ──────────────────────────────────────────────────────────────────── */

/* Header strip above the main surface */
.app-userbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  padding: 12px 28px 0 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 2px;
}
.user-badge-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}
.user-badge-sep { color: var(--ink-faint); }
.user-badge-link {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--accent);
  cursor: pointer;
  letter-spacing: inherit;
  text-transform: inherit;
}
.user-badge-link:hover { text-decoration: underline; }

/* Sign-in chip — editorial-link style rather than a boxed widget, so it
   reads as native to the page's Fraunces-italic CTA language (matches
   "Continue reading: <title> →" on Today and the bs-label-link pill on
   the concept page). A hairline border-bottom keeps it visibly
   interactive against the surrounding mono labels in .app-userbar. */
.user-badge-signin {
  background: none;
  border: 0;
  padding: 2px 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--accent);
  cursor: pointer;
  border-bottom: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
  border-radius: 0;
  transition: color 120ms ease, border-color 120ms ease;
  line-height: 1.2;
}
.user-badge-signin:hover {
  color: color-mix(in oklab, var(--accent) 80%, var(--ink));
  border-bottom-color: var(--accent);
}
.user-badge-signin:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 2px;
}
.user-badge-signin-arrow {
  font-style: normal;
  margin-left: 2px;
}

/* Login modal (overlay backdrop + form) */
.login-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 14, 8, 0.42);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}
.login-modal {
  width: 100%;
  max-width: 420px;
}
.login-form {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 32px 32px 28px 32px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.18);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
}
.login-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 28px;
  height: 28px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  color: var(--ink-mute);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-close:hover { color: var(--accent); background: var(--paper-deep); }
.login-close:focus { outline: 1.5px solid var(--accent); outline-offset: 1px; }
.login-close:disabled { opacity: 0.4; cursor: not-allowed; }
.login-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.login-h {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  margin: 0;
  color: var(--ink);
}
.login-blurb {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-mute);
  margin: 0 0 6px 0;
  line-height: 1.5;
}
.login-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.login-lbl {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.login-opt {
  font-style: italic;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--ink-faint);
}
.login-input {
  font-family: var(--serif);
  font-size: 16px;
  padding: 8px 10px;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  color: var(--ink);
  border-radius: 2px;
}
.login-input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--paper);
}
.login-error {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--accent);
  font-style: italic;
}
.login-info {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-mute);
  font-style: italic;
}
.login-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}
.turnstile-widget {
  margin-top: 4px;
  min-height: 65px;
}
.login-mode-switch {
  display: flex;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 4px;
}
.login-mode-tab {
  flex: 1;
  background: var(--paper-deep);
  border: 0;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.login-mode-tab + .login-mode-tab {
  border-left: 1px solid var(--rule);
}
.login-mode-tab:hover:not(:disabled):not(.is-active) {
  color: var(--ink);
}
.login-mode-tab.is-active {
  background: var(--paper);
  color: var(--accent);
}
.login-mode-tab:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Contextual nudge banner shown above the login form fields when a prompt
   opens the modal with a specific reason (e.g. first-brief signup nudge). */
.login-nudge {
  margin: 4px 0 2px;
  padding: 12px 14px;
  background: var(--paper-deep);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
}
.login-nudge-head {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}
.login-nudge-body {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--ink);
}

/* Per-concept Notes */
.notes-section {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 64ch;
}
.notes-textarea {
  width: 100%;
  min-height: 96px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.55;
  resize: vertical;
  border-radius: 2px;
  transition: border-color 120ms ease, background 120ms ease;
}
.notes-textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--paper);
}
.notes-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.notes-meta-strong { color: var(--ink-mute); }
.notes-meta-flash { color: var(--accent); }
.notes-meta-counter { color: var(--ink-mute); font-style: italic; }
.notes-meta-counter.is-over { color: var(--accent); }

/* ---------- Today personalization ---------- */
.today-streak-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0 8px 0;
  padding: 12px 16px;
  background: color-mix(in oklab, var(--accent) 8%, transparent);
  border-left: 3px solid var(--accent);
  font-family: var(--serif);
}
.today-streak-flame { color: var(--accent); font-size: 14px; line-height: 1; }
.today-streak-label { font-style: italic; font-size: 16px; color: var(--ink); flex: 1; }
.today-streak-meta {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--ink-mute); text-transform: uppercase;
}

/* "Pick up where you left off" block — shown only to returning readers, sits
   between the streak banner and the lede. Two cards side-by-side on wide
   screens, stacked on mobile. */
.today-continue {
  margin: 14px 0 8px 0;
}
.today-continue-kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.today-continue-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}
.today-continue-card {
  text-align: left;
  cursor: pointer;
  background: var(--paper);
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--accent);
  padding: 14px 16px;
  font-family: var(--serif);
  transition: background 120ms ease, border-color 120ms ease;
}
.today-continue-card:hover {
  background: color-mix(in oklab, var(--accent) 5%, var(--paper));
  border-left-color: var(--accent);
}
.today-continue-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.today-continue-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 4px;
}
.today-continue-meta {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.4;
}

.today-neglected {
  display: flex; align-items: center; gap: 14px;
  background: color-mix(in oklab, var(--d, var(--accent)) 8%, var(--paper));
  border-left: 3px solid var(--d, var(--accent));
  padding: 14px 16px;
}
.today-neglected .sw {
  width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0;
}
.today-neglected .title { font-family: var(--serif); font-size: 16px; color: var(--ink); }
.today-neglected .title em { font-style: italic; }
.today-neglected .sub {
  font-family: var(--serif); font-size: 13px; color: var(--ink-mute);
  margin-top: 2px;
}
.today-neglected .btn { margin-left: auto; }

.today-suggested {
  cursor: pointer;
  border: 1px solid color-mix(in oklab, var(--accent) 25%, var(--rule));
  background: color-mix(in oklab, var(--accent) 4%, var(--paper));
  padding: 16px;
  transition: background 120ms ease;
}
.today-suggested:hover { background: color-mix(in oklab, var(--accent) 7%, var(--paper)); }
.today-suggested .head .kicker {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent);
}
.today-suggested-body {
  display: flex; gap: 14px; margin-top: 10px; align-items: flex-start;
}
.today-suggested-body .glyph {
  font-family: var(--serif); font-size: 32px; line-height: 1;
  flex-shrink: 0; padding-top: 2px;
}
.today-suggested-body h4 {
  font-family: var(--serif); font-size: 18px; font-weight: 500;
  color: var(--ink); margin: 0;
}
.today-suggested-body .insight {
  font-family: var(--serif); font-style: italic;
  font-size: 13px; color: var(--ink-mute); margin: 4px 0 0 0;
}

.today-recent {
  display: flex; flex-direction: column; gap: 6px; margin-top: 8px;
}
.today-recent-item {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center; gap: 10px;
  padding: 6px 4px;
  cursor: pointer;
  border-radius: 2px;
}
.today-recent-item:hover { background: var(--paper-deep); }
.today-recent-item .glyph { font-family: var(--serif); font-size: 22px; }
.today-recent-item .title { font-family: var(--serif); font-size: 14px; color: var(--ink); }
.today-recent-item .when {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.today-records { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.today-record {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 6px 0; border-bottom: 1px solid var(--rule-soft);
  font-family: var(--serif);
}
.today-record:last-child { border-bottom: 0; }
.today-record .lbl {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-mute);
}
.today-record .val { font-style: italic; font-size: 14px; color: var(--ink); }

/* Library card per-user indicators */
.lib-card-flag {
  display: inline-block;
  margin-left: 6px;
  font-size: 11px;
  color: var(--ink-mute);
  vertical-align: middle;
}
.lib-card-flag-fav {
  color: var(--accent);
  font-size: 12px;
}
.notes-saving .notes-textarea { border-color: var(--accent); }

/* Study Phase B — brief progress dots */
.brief-progress-dots {
  display: inline-flex;
  gap: 6px;
}
.brief-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  display: inline-block;
}
.brief-dot-current { background: var(--accent); border-color: var(--accent); }
.brief-dot-read { background: var(--ink); border-color: var(--ink); }
.brief-dot-skipped { background: transparent; border-color: var(--ink-faint); }

/* Phase B brief-step layout (reuses .study-card; just tweaks spacing) */
.study-brief-step .card-brief-panel {
  margin-top: 8px;
}
.study-brief-step .card-foot {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

/* Phase D summary briefs row */
.summary-briefs {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 6px;
}
.summary-briefs b {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: 0;
  text-transform: none;
}

/* Skip-anchor link in chrome — distinct from generic chrome links */
.btn-skip-anchor {
  cursor: pointer;
  color: var(--accent);
}
.btn-skip-anchor:hover { text-decoration: underline; }

/* ---------- Art-reference popover ---------- */
/* Inline trigger inside brief prose. Italics + dotted accent rule
   underneath signal "this work has a picture you can hover." Full
   popover renders below the trigger when open. */
.work-ref {
  position: relative;
  font-style: italic;
  color: var(--ink);
  border-bottom: 1px dotted var(--accent);
  cursor: pointer;
  padding: 0 1px;
  border-radius: 1px;
  transition: background-color 120ms ease, color 120ms ease;
}
.work-ref em { font-style: italic; color: inherit; }
.work-ref:hover,
.work-ref:focus,
.work-ref-open {
  background-color: color-mix(in oklab, var(--accent) 12%, transparent);
  color: var(--accent);
  outline: none;
}

.work-ref-pop {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  width: 380px;
  max-width: 90vw;
  z-index: 200;
  background: var(--paper);
  border: 1px solid var(--rule);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22), 0 2px 6px rgba(0, 0, 0, 0.08);
  padding: 10px 10px 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-style: normal;
  cursor: default;
  animation: workref-fade 140ms ease both;
}
@keyframes workref-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.work-ref-img-wrap {
  position: relative;
  background: var(--paper-deep);
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--rule-soft);
  cursor: zoom-in;
  text-decoration: none;
  color: inherit;
  transition: border-color 120ms ease;
}
.work-ref-img-wrap:hover {
  border-color: var(--accent);
}
.work-ref-img {
  display: block;
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  opacity: 0;
  transition: opacity 220ms ease;
}
.work-ref-img.is-loaded { opacity: 1; }
.work-ref-img-status {
  position: absolute;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.work-ref-cap {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 0 2px;
}
.wrc-title {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
  line-height: 1.3;
}
.wrc-title em { font-style: italic; }
.wrc-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  line-height: 1.5;
}
.wrc-where {
  color: var(--ink-faint);
  font-style: italic;
  letter-spacing: 0.02em;
}
.wrc-links {
  display: flex;
  gap: 14px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.wrc-link {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}
.wrc-link:hover { text-decoration: underline; }
.wrc-link-muted { color: var(--ink-mute); }
.wrc-link-muted:hover { color: var(--accent); }

/* Touch bottom-sheet variant. Rendered via a body-level portal in
   art-refs.jsx so it escapes the page-in animation's transform-induced
   containing block (which would otherwise pin position:fixed to .page,
   not the viewport). Always uses viewport-fixed positioning with even
   gutters on both sides; image clamped so the sheet doesn't dominate
   landscape phones. */
.work-ref-pop--sheet {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 16px;
  top: auto;
  width: auto;
  max-width: none;
  margin-top: 0;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}
.work-ref-pop--sheet .work-ref-img {
  max-height: min(60vh, 480px);
}

/* ─── Editorial QC notes ─────────────────────────────────────────────── */

/* Subtle dashed outline on hover when QC mode is on, so the author can
   see what an Alt-click would target. Skip our own UI to avoid feedback. */
[data-qc-mode="1"] body *:not(.qc-panel):not(.qc-panel *):not(.qc-composer):not(.qc-composer *):not(.qc-selpop):not(.qc-pill):not(.qc-panel-toggle):hover {
  outline: 1px dashed color-mix(in oklab, var(--accent) 35%, transparent);
  outline-offset: 2px;
}

[data-qc-mode="1"] .qc-has-notes {
  position: relative;
}

/* Floating "QC mode" pill — bottom-left, low-key but always visible. */
.qc-pill {
  position: fixed;
  left: 16px;
  bottom: 16px;
  z-index: 950;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper-soft);
  color: var(--ink);
  font: 500 12px/1 "Inter Tight", system-ui, sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0,0,0,0.10);
}
.qc-pill:hover { background: var(--paper); }
.qc-pill-dot {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 18%, transparent);
}
.qc-pill-count {
  margin-left: 4px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--paper);
  font-size: 10px;
  letter-spacing: 0;
}

/* Panel-open toggle button, sits next to the pill. */
.qc-panel-toggle {
  position: fixed;
  left: 16px;
  bottom: 56px;
  z-index: 950;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink-soft);
  font: 500 12px/1 "Inter Tight", system-ui, sans-serif;
  cursor: pointer;
}
.qc-panel-toggle:hover { color: var(--ink); border-color: var(--ink-mute); }
.qc-panel-toggle-count {
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--rule-soft);
  color: var(--ink-soft);
  font-size: 10px;
}

/* Selection popover — the "+ Note" button that follows the selection. */
.qc-selpop {
  position: fixed;
  z-index: 1000;
  pointer-events: auto;
}
.qc-selpop-btn {
  padding: 6px 10px;
  border: 1px solid var(--accent-deep);
  background: var(--accent);
  color: var(--paper);
  font: 600 12px/1 "Inter Tight", system-ui, sans-serif;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.18);
}
.qc-selpop-btn:hover { background: var(--accent-deep); }

/* Composer popup — appears near the anchor. */
.qc-composer {
  position: fixed;
  z-index: 1100;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 10px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.18), 0 2px 6px rgba(0,0,0,0.10);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: "Inter Tight", system-ui, sans-serif;
}
.qc-composer-anchor {
  display: flex;
  gap: 8px;
  align-items: baseline;
  font-size: 11px;
  color: var(--ink-mute);
}
.qc-composer-kind {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 600;
}
.qc-composer-snip {
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}
.qc-composer-text {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  padding: 8px;
  font: 400 13px/1.45 "Inter Tight", system-ui, sans-serif;
}
.qc-composer-text:focus { outline: none; border-color: var(--accent); }
.qc-composer-row { display: flex; gap: 8px; }
.qc-composer-tags {
  flex: 1;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  padding: 6px 8px;
  font: 400 12px/1.2 "Inter Tight", system-ui, sans-serif;
}
.qc-composer-sev {
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink-soft);
  padding: 6px 8px;
  font: 400 12px/1.2 "Inter Tight", system-ui, sans-serif;
}
.qc-composer-actions { display: flex; gap: 8px; justify-content: flex-end; }

.qc-btn-primary {
  padding: 6px 12px;
  border: 1px solid var(--accent-deep);
  background: var(--accent);
  color: var(--paper);
  border-radius: 6px;
  cursor: pointer;
  font: 600 12px/1 "Inter Tight", system-ui, sans-serif;
}
.qc-btn-primary:hover { background: var(--accent-deep); }
.qc-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.qc-btn-ghost {
  padding: 6px 10px;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink-soft);
  border-radius: 6px;
  cursor: pointer;
  font: 500 12px/1 "Inter Tight", system-ui, sans-serif;
}
.qc-btn-ghost:hover { color: var(--ink); border-color: var(--ink-mute); }
.qc-btn-ghost:disabled { opacity: 0.4; cursor: not-allowed; }

/* Notes panel (right side drawer). */
.qc-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(420px, 92vw);
  z-index: 1050;
  background: var(--paper-soft);
  border-left: 1px solid var(--rule);
  box-shadow: -16px 0 40px rgba(0,0,0,0.10);
  display: flex;
  flex-direction: column;
  font-family: "Inter Tight", system-ui, sans-serif;
  color: var(--ink);
}
.qc-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 8px;
  border-bottom: 1px solid var(--rule-soft);
}
.qc-panel-title {
  font: 600 14px/1.2 "Fraunces", "EB Garamond", Georgia, serif;
  letter-spacing: 0.02em;
}
.qc-icon-btn {
  border: none;
  background: transparent;
  color: var(--ink-mute);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 4px;
}
.qc-icon-btn:hover { background: var(--paper); color: var(--ink); }
.qc-panel-meta {
  padding: 6px 16px 10px;
  font-size: 11px;
  color: var(--ink-mute);
}
.qc-panel-meta strong { color: var(--ink-soft); font-weight: 600; }
.qc-syncing { font-style: italic; color: var(--accent); }
.qc-link {
  border: none;
  background: transparent;
  padding: 0;
  color: var(--accent);
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
}
.qc-link:hover { color: var(--accent-deep); }
.qc-dot-ok  { color: oklch(0.62 0.16 145); font-weight: 700; }
.qc-dot-bad { color: var(--accent); font-weight: 700; }
.qc-dot-unk { color: var(--ink-faint); }

/* Prominent Save when there are unsaved notes (panel-open case). */
.qc-panel-save {
  margin: 0 12px 12px;
  padding: 12px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: color-mix(in oklab, var(--accent) 8%, var(--paper));
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.qc-btn-save {
  width: 100%;
  padding: 10px 12px;
  font-size: 13px;
}
.qc-save-hint {
  font-size: 11px;
  color: var(--ink-mute);
}
.qc-save-hint code {
  background: var(--paper-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 3px;
  padding: 0 4px;
  font-size: 10.5px;
}

/* Floating save button when panel is closed. */
.qc-save-floating {
  position: fixed;
  left: 16px;
  bottom: 96px;
  z-index: 950;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--accent-deep);
  border-radius: 8px;
  background: var(--accent);
  color: var(--paper);
  font: 600 12px/1 "Inter Tight", system-ui, sans-serif;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
  animation: qc-pulse 2.4s ease-in-out infinite;
}
.qc-save-floating:hover {
  background: var(--accent-deep);
  animation: none;
}
.qc-save-floating-dot {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--paper);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--paper) 35%, transparent);
}
@keyframes qc-pulse {
  0%, 100% { box-shadow: 0 6px 18px rgba(0,0,0,0.18), 0 0 0 0 color-mix(in oklab, var(--accent) 50%, transparent); }
  50%      { box-shadow: 0 6px 18px rgba(0,0,0,0.18), 0 0 0 8px color-mix(in oklab, var(--accent) 0%, transparent); }
}

@media (max-width: 640px) {
  .qc-save-floating { left: 8px; bottom: 88px; }
}
.qc-panel-tools {
  display: flex;
  gap: 8px;
  padding: 0 16px 12px;
  flex-wrap: wrap;
}

.qc-section-title {
  margin: 14px 16px 6px;
  font: 600 11px/1 "Inter Tight", system-ui, sans-serif;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.qc-list {
  list-style: none;
  margin: 0;
  padding: 0 8px 16px;
  overflow-y: auto;
}
.qc-list-resolved { padding-bottom: 24px; }
.qc-empty {
  padding: 12px 16px;
  font-size: 12px;
  color: var(--ink-mute);
  font-style: italic;
}

.qc-row {
  position: relative;
  margin: 4px 0;
  padding: 10px 12px;
  border: 1px solid var(--rule-soft);
  border-radius: 8px;
  background: var(--paper);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 8px;
}
.qc-row.is-resolved {
  opacity: 0.55;
}
.qc-row-route {
  grid-column: 1 / -1;
  font: 600 10px/1.2 "JetBrains Mono", monospace;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.qc-row-text {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.4;
  white-space: pre-wrap;
}
.qc-row-snippet {
  grid-column: 1 / -1;
  font-size: 11.5px;
  font-style: italic;
  color: var(--ink-mute);
  border-left: 2px solid var(--rule);
  padding-left: 6px;
  margin-top: 2px;
}
.qc-row-meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 10px;
  color: var(--ink-mute);
  margin-top: 2px;
}
.qc-tags { display: inline-flex; gap: 4px; flex-wrap: wrap; }
.qc-tag {
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  font-size: 10px;
  letter-spacing: 0.02em;
}
.qc-sev {
  padding: 1px 6px;
  border-radius: 999px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.qc-sev-minor { background: var(--rule-soft); color: var(--ink-soft); }
.qc-sev-major { background: var(--accent); color: var(--paper); }
.qc-pending {
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--paper-deep);
  color: var(--ink-mute);
  font-style: italic;
}

.qc-row-actions {
  grid-column: 2;
  grid-row: 1 / span 4;
  align-self: start;
  justify-self: end;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.qc-mini {
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  color: var(--ink-soft);
  border-radius: 4px;
  width: 26px;
  height: 24px;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.qc-mini:hover { color: var(--ink); border-color: var(--ink-mute); }
.qc-mini-danger:hover { color: var(--accent); border-color: var(--accent); }

/* Flash highlight when jumping to an anchor. */
.qc-flash {
  animation: qc-flash 1.5s ease-out;
}
@keyframes qc-flash {
  0%   { background: color-mix(in oklab, var(--accent) 35%, transparent); }
  100% { background: transparent; }
}

/* Toast for clipboard success. */
.qc-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 1200;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 6px;
  font: 500 12px/1.3 "Inter Tight", system-ui, sans-serif;
  opacity: 0;
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}
.qc-toast.is-on {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 640px) {
  .qc-panel { width: 100vw; }
  .qc-pill { left: 8px; bottom: 8px; }
  .qc-panel-toggle { left: 8px; bottom: 48px; }
}

/* ─── Subfield Cards ──────────────────────────────────────────────── */
/* Cards live at curriculum/cards/<slug>.md and are an orientation
   surface — one-screen grasps of named subfields. The Cards route
   (route="cards") renders an index of all 55 cards grouped by domain;
   clicking opens a detail view that fetches and renders the markdown.
   Internal cross-card links (anchored by data-slug in the rendered
   HTML) navigate within the SPA without leaving the route. */

.cards-page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 56px 96px;
  font-family: var(--serif);
  color: var(--ink);
}

.cards-header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 24px;
  margin-bottom: 36px;
}
.cards-header h1 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--accent);
}
.cards-intro {
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 68ch;
  margin: 0;
}

.cards-domains {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.cards-section {
  scroll-margin-top: 24px;
}
.cards-section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 6px;
}
.cards-section-head h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--ink);
}
.cards-count {
  font-family: var(--mono, "JetBrains Mono", monospace);
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.card-tile {
  display: block;
  padding: 16px 18px 18px;
  background: var(--paper-soft);
  border: 1px solid var(--rule-soft);
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}
.card-tile:hover {
  border-color: var(--accent);
  background: var(--paper);
  transform: translateY(-1px);
}
/* Sumi-e emblem at the top of every card tile. Bleeds to the tile's
   inner edges via negative margins matched to .card-tile padding
   (16/18px). Square source image, height auto so the natural 1:1
   ratio displays the full emblem without crop. */
.card-tile-emblem {
  display: block;
  width: calc(100% + 36px);
  height: auto;
  margin: -16px -18px 12px;
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper);
}
[data-mode="dark"] .card-tile-emblem {
  filter: invert(0.86) hue-rotate(180deg);
}
/* Larger emblem on the card-detail page header, centered above the
   markdown body. Capped so it anchors rather than dominates. */
.card-detail-emblem {
  display: block;
  width: min(320px, 100%);
  height: auto;
  margin: 8px auto 24px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-soft);
}
[data-mode="dark"] .card-detail-emblem {
  filter: invert(0.86) hue-rotate(180deg);
}
.card-tile h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 6px;
  letter-spacing: 0.005em;
  color: var(--ink);
}
.card-tile p {
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.45;
  margin: 0;
  color: var(--ink-mute);
  font-style: italic;
}

/* ─── Detail view ────────────────────────────────────────────────── */

.card-detail-page {
  max-width: 760px;
}

.cards-detail-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--mono, "JetBrains Mono", monospace);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.card-back {
  background: none;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 5px 12px;
  border-radius: 3px;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  cursor: pointer;
  text-transform: uppercase;
}
.card-back:hover { border-color: var(--accent); color: var(--accent); }
.card-detail-nav {
  display: flex;
  gap: 18px;
}
.card-detail-nav a {
  color: var(--ink-mute);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
}
.card-detail-nav a:hover { color: var(--accent); }

.card-detail-loading {
  font-family: var(--mono, "JetBrains Mono", monospace);
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
  padding: 80px 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.card-detail-error {
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 18px 22px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}
.card-detail-error code {
  background: var(--paper-deep);
  padding: 1px 5px;
  font-size: 12px;
  border-radius: 3px;
}

/* ─── Rendered markdown styles ───────────────────────────────────── */

.card-content {
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--ink);
}
.card-content h1 {
  font-family: var(--serif);
  font-size: 48px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.01em;
  margin: 0 0 24px;
  color: var(--accent);
}
.card-content h2 {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.005em;
  margin: 36px 0 14px;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-soft);
  padding-bottom: 4px;
}
.card-content h3 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 500;
  font-style: italic;
  margin: 24px 0 8px;
  color: var(--ink-soft);
}
.card-content h4 {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 500;
  margin: 18px 0 6px;
  color: var(--ink-soft);
}
.card-content p {
  margin: 0 0 14px;
}
.card-content ul, .card-content ol {
  margin: 0 0 16px;
  padding-left: 26px;
}
.card-content li {
  margin: 0 0 8px;
}
.card-content li::marker {
  color: var(--accent);
}
.card-content strong {
  font-weight: 600;
  color: var(--ink);
}
.card-content em {
  font-style: italic;
  color: var(--ink-soft);
}
.card-content code {
  font-family: var(--mono, "JetBrains Mono", monospace);
  font-size: 0.88em;
  background: var(--paper-soft);
  border: 1px solid var(--rule-soft);
  padding: 1px 5px;
  border-radius: 3px;
}
.card-content blockquote {
  border-left: 2px solid var(--accent);
  padding: 4px 0 4px 18px;
  margin: 18px 0;
  font-style: italic;
  color: var(--ink-mute);
}
.card-content hr {
  border: 0;
  border-top: 1px solid var(--rule-soft);
  margin: 32px 0;
}
.card-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color 0.12s ease;
}
.card-content a:hover {
  border-bottom-color: var(--accent);
}
.card-content a.card-xref {
  color: var(--accent);
  font-style: italic;
  border-bottom: 1px dotted var(--accent);
}
.card-content a.card-xref:hover {
  background: var(--accent-tint);
  border-bottom-style: solid;
}

@media (max-width: 720px) {
  .cards-page { padding: 32px 20px 64px; }
  .cards-header h1 { font-size: 40px; }
  .card-content h1 { font-size: 36px; }
  .cards-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Annals — populated, filterable timeline
   ============================================================ */

.annals-wrap {
  display: grid;
  grid-template-rows: auto auto auto auto 1fr;
  height: 100vh;
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

.annals-chrome {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 28px 36px 14px;
  border-bottom: 1px solid var(--rule);
}
.annals-title h1 {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.005em;
}
.annals-title h1 em {
  font-style: italic;
  color: var(--ink-soft);
}
.annals-sub {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.annals-hud {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
}
.annals-hud .hud-row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.annals-hud .hud-k {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.annals-hud .hud-v {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink);
  text-transform: none;
  letter-spacing: 0;
}

/* Detail seg — same idiom as the Chronicle filter seg, sized down */
.detail-seg {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.detail-seg .seg-btn {
  background: transparent;
  border: 0;
  padding: 4px 9px;
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--ink-mute);
  cursor: pointer;
  border-right: 1px solid var(--rule);
  transition: background 120ms ease, color 120ms ease;
  letter-spacing: 0.02em;
}
.detail-seg .seg-btn:last-child { border-right: 0; }
.detail-seg .seg-btn:hover { color: var(--ink); background: var(--paper-deep); }
.detail-seg .seg-btn.active {
  background: var(--ink);
  color: var(--paper);
}

/* Tier-count chips in the chrome */
.hud-counts { font-family: var(--mono); }
.hud-tiercounts {
  display: inline-flex;
  gap: 8px;
  font-style: normal;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
}
.tier-count {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  letter-spacing: 0.04em;
}
.tier-count.tier-1 { color: var(--ink); }
.tier-count.tier-2 { color: var(--ink-soft); }
.tier-count.tier-3 { color: var(--ink-mute); }

/* ─── Filters ───────────────────────────────────────────────── */

.annals-filters {
  padding: 14px 36px 10px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.annals-filter-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.annals-filter-row .hud-k {
  flex: 0 0 90px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.lens-chips, .dom-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-mute);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.chip:hover {
  color: var(--ink);
  border-color: var(--ink-mute);
}
.chip.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.chip.ghost {
  border-style: dashed;
}
.chip.small {
  padding: 2px 8px;
  font-size: 10.5px;
}

.dom-chip .dom-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--d);
  border: 1px solid var(--ink-faint);
}
.dom-chip.active .dom-dot {
  border-color: var(--paper);
}
.dom-chip .dom-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

/* ─── Lens blurb (when a lens is active) ─────────────────────── */

.lens-blurb {
  padding: 8px 36px;
  background: color-mix(in oklab, var(--ink) 4%, var(--paper));
  border-bottom: 1px solid var(--rule-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
}
.lens-blurb-lbl {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.lens-blurb em {
  font-style: italic;
  color: var(--ink);
}
.lens-blurb-sep { color: var(--ink-faint); }
.lens-blurb-span {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
}

/* ─── Axis (era bands + ticks) ───────────────────────────────── */

.annals-axis {
  position: relative;
  height: 40px;
  margin: 0 36px;
  border-bottom: 1px solid var(--rule);
}
.axis-bands {
  position: absolute;
  inset: 0 0 18px 0;
}
.axis-band {
  position: absolute;
  top: 0;
  bottom: 0;
  opacity: 0.18;
  border-right: 1px solid color-mix(in oklab, var(--ink) 18%, transparent);
}
.axis-band:last-child { border-right: 0; }
.axis-band-label {
  position: absolute;
  top: 4px;
  left: 6px;
  display: inline-flex;
  gap: 6px;
  align-items: baseline;
  pointer-events: none;
}
.axis-band-id {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink);
  font-weight: 600;
}
.axis-band-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-soft);
}
.axis-ticks {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 18px;
}
.axis-tick {
  position: absolute;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* center most ticks; nudge near-edge ticks to keep wide BCE labels on-page */
.axis-tick:not(.tick-edge-l):not(.tick-edge-r) { transform: translateX(-50%); }
.axis-tick.tick-edge-l { transform: translateX(0); align-items: flex-start; }
.axis-tick.tick-edge-r { transform: translateX(-100%); align-items: flex-end; }
.axis-tick-line {
  width: 1px;
  height: 6px;
  background: var(--ink-faint);
}
.axis-tick-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  margin-top: 1px;
  white-space: nowrap;
}

/* ─── Grid of swimlanes ──────────────────────────────────────── */

.annals-grid {
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 36px 36px;
}
.annals-empty {
  padding: 48px;
  text-align: center;
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-mute);
}

.swimlane {
  --d: var(--ink);
  display: grid;
  grid-template-columns: 84px 1fr;
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
}
.swim-gutter {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 10px 0 0;
  border-right: 1px solid var(--rule-soft);
  background: var(--paper);
}
.swim-folio {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.12em;
}
.swim-short {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink);
  margin-top: 2px;
}

.swim-track {
  position: relative;
  overflow: hidden;
  background: color-mix(in oklab, var(--paper-soft) 70%, transparent);
}
.swim-era-tint {
  position: absolute;
  top: 0;
  bottom: 0;
  opacity: 0.06;
  pointer-events: none;
}

/* Figure lifespan bar — biographical voice (italic Fraunces) */
.swim-figure {
  position: absolute;
  height: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  z-index: 2;
}
.swim-figure .figbar-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
  background: var(--d);
  border-radius: 1.5px;
  opacity: 0.78;
}
.swim-figure .figbar-cap {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--d);
  top: 50%;
  transform: translateY(-50%);
  border: 1.5px solid var(--paper);
}
.swim-figure .figbar-cap-left  { left: -2px; }
.swim-figure .figbar-cap-right { right: -2px; }
.swim-figure .figbar-name {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 13px;
  line-height: 1;
  color: var(--ink-soft);
  white-space: nowrap;
  pointer-events: none;
  padding: 0 4px 0 0;
  text-shadow:
    0 0 4px var(--paper),
    0 0 3px var(--paper),
    0 0 3px var(--paper);
}
.swim-figure:hover { z-index: 5; }
.swim-figure:hover .figbar-line {
  opacity: 1;
  height: 5px;
  margin-top: -2.5px;
}
.swim-figure:hover .figbar-name {
  color: var(--ink);
  font-style: italic;
}

/* Tier-based visual weight — canonical names stay marquee even when
   tier-2 and tier-3 entries are also rendered. */
.swim-figure[data-tier="1"] .figbar-name {
  font-weight: 500;
  color: var(--ink);
  font-size: 13.5px;
}
.swim-figure[data-tier="1"] .figbar-line { opacity: 0.92; }
.swim-figure[data-tier="2"] .figbar-name { color: var(--ink-soft); font-size: 12.5px; }
.swim-figure[data-tier="2"] .figbar-line { opacity: 0.7; }
.swim-figure[data-tier="3"] .figbar-name {
  color: var(--ink-mute);
  font-size: 11.5px;
  font-weight: 400;
}
.swim-figure[data-tier="3"] .figbar-line { opacity: 0.5; }
.swim-figure[data-tier="3"] .figbar-cap { opacity: 0.7; }
.swim-figure[data-tier="3"]:hover .figbar-name { color: var(--ink); }

/* Event pin — telegraphic voice (uppercase mono, accent color) */
.swim-event {
  position: absolute;
  height: 20px;
  cursor: pointer;
  z-index: 3;
}
.swim-event .evpin-stem {
  position: absolute;
  left: 0;
  top: -2px;
  width: 1.5px;
  height: 24px;
  background: var(--accent);
  transform: translateX(-50%);
  opacity: 0.55;
}
.swim-event .evpin-dot {
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border: 1.5px solid var(--paper);
  transform: translate(-50%, -50%) rotate(45deg);
  z-index: 1;
}
.swim-event .evpin-title {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  pointer-events: none;
  padding: 0 4px 0 4px;
  text-shadow:
    0 0 4px var(--paper),
    0 0 3px var(--paper),
    0 0 3px var(--paper);
}
.swim-event:hover { z-index: 6; }
.swim-event:hover .evpin-stem,
.swim-event:hover .evpin-dot { opacity: 1; }
.swim-event:hover .evpin-title { color: var(--accent-deep); }

.swim-event[data-tier="1"] .evpin-title { font-weight: 700; }
.swim-event[data-tier="1"] .evpin-stem  { opacity: 0.75; }
.swim-event[data-tier="2"] .evpin-title { color: color-mix(in oklab, var(--accent) 80%, var(--ink-mute)); }
.swim-event[data-tier="2"] .evpin-stem  { opacity: 0.5; }
.swim-event[data-tier="3"] .evpin-title {
  color: var(--ink-mute);
  font-size: 9px;
  letter-spacing: 0.18em;
}
.swim-event[data-tier="3"] .evpin-stem { opacity: 0.35; }
.swim-event[data-tier="3"] .evpin-dot  { opacity: 0.6; }
.swim-event[data-tier="3"]:hover .evpin-title { color: var(--accent); }

/* ─── Hover tip ──────────────────────────────────────────────── */

.annals-tip {
  position: fixed;
  z-index: 1000;
  max-width: 320px;
  padding: 10px 14px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--d);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
  pointer-events: none;
  font-family: var(--serif);
}
.tip-runhead {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 4px;
}
.tip-domain { color: var(--d); font-weight: 600; }
.tip-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 4px;
}
.tip-blurb {
  font-style: italic;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.45;
}
.tip-lenses {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tip-lens {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 1px 6px;
  border: 1px solid var(--rule);
  border-radius: 999px;
}

/* ─── Drawer ─────────────────────────────────────────────────── */

.annals-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(20, 14, 8, 0.18);
  z-index: 900;
}
.annals-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(440px, 92vw);
  background: var(--paper);
  border-left: 1px solid var(--rule);
  box-shadow: -12px 0 32px rgba(0, 0, 0, 0.16);
  padding: 28px 32px 24px;
  overflow-y: auto;
  z-index: 901;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.drw-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1;
  color: var(--ink-mute);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.drw-close:hover { color: var(--accent); background: var(--paper-deep); }
.drw-close:focus { outline: 1.5px solid var(--accent); outline-offset: 1px; }

.drw-runhead {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.drw-domain { color: var(--d); font-weight: 600; }
.drw-title {
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 500;
  margin: 0;
  color: var(--ink);
}
.drw-meta {
  display: flex;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
}
.drw-dates { color: var(--ink-soft); font-weight: 600; }
.drw-body {
  margin-top: 4px;
  border-top: 1px solid var(--rule-soft);
  padding-top: 12px;
}
.drw-blurb {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 0 0 12px;
}
.drw-brief-p {
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  margin: 0 0 10px;
}
.drw-brief-p.drop::first-letter {
  font-size: 36px;
  font-weight: 500;
  float: left;
  line-height: 0.9;
  margin-right: 6px;
  margin-top: 4px;
  font-family: var(--serif);
  color: var(--ink);
}
.drw-brief-now {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--rule);
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.drw-now-lbl {
  display: block;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 4px;
}

.drw-lenses {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.drw-lenses-lbl {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.drw-lenses-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.drw-foot {
  margin-top: auto;
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--rule-soft);
  padding-top: 12px;
}

/* Portrait — figures and signature event images at the top of the drawer */
.drw-portrait {
  display: block;
  margin: 4px 0 14px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-deep);
  text-decoration: none;
  color: inherit;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
.drw-portrait:hover {
  border-color: var(--d, var(--accent));
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--d, var(--accent)) 25%, transparent);
}
.drw-portrait-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
  object-position: center top;
  opacity: 0;
  transition: opacity 240ms ease;
}
.drw-portrait-img.is-loaded { opacity: 1; }
.drw-portrait-status {
  display: block;
  padding: 14px;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.drw-portrait-cap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px 10px;
  border-top: 1px solid var(--rule-soft);
}
.drw-portrait-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 12.5px;
  color: var(--ink);
}
.drw-portrait-credit {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.drw-portrait-wiki {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  cursor: pointer;
}
.drw-portrait-wiki:hover { text-decoration: underline; }

/* Per-lens editorial notes — "Through this lens" section */
.drw-lens-notes {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--rule-soft);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.drw-lens-notes-lbl {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 2px;
}
.drw-lens-note {
  border-left: 2px solid var(--rule);
  padding: 4px 12px;
}
.drw-lens-note.is-active {
  border-left-color: var(--d, var(--accent));
  background: color-mix(in oklab, var(--d, var(--accent)) 5%, transparent);
}
.drw-lens-note-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}
.drw-lens-note-label {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink);
}
.drw-lens-note-span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}
.drw-lens-note-body {
  margin: 0;
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* Highlight the active lens chip in the bottom row */
.drw-lenses-row .chip.active {
  background: color-mix(in oklab, var(--d, var(--accent)) 12%, var(--paper));
  border-color: var(--d, var(--accent));
  color: var(--ink);
}

/* Dark mode adjustments — era band tints look heavy on dark paper */
[data-mode="dark"] .axis-band { opacity: 0.22; }
[data-mode="dark"] .swim-era-tint { opacity: 0.10; }
[data-mode="dark"] .swim-figure .figbar-name,
[data-mode="dark"] .swim-event .evpin-title {
  text-shadow:
    0 0 3px var(--paper),
    0 0 3px var(--paper),
    0 0 3px var(--paper);
}

/* ============================================================
   MANIFESTO (Why Polymathic — editorial statement page)
   ============================================================ */

.manifesto-page {
  max-width: 760px;
}
.manifesto-head {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 24px;
  margin-bottom: 36px;
}
.manifesto-kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 14px;
}
.manifesto-h1 {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0 0 18px 0;
}
.manifesto-h1 em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.manifesto-deck {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  max-width: 640px;
}
.manifesto-deck em { font-style: italic; color: var(--accent); }

.manifesto-body {
  max-width: 680px;
}
.manifesto-section-head {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  font-weight: 500;
  color: var(--accent);
  margin: 38px 0 10px;
  letter-spacing: -0.005em;
}
.manifesto-p {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.62;
  color: var(--ink);
  text-wrap: pretty;
  margin: 0 0 18px;
}
.manifesto-p em {
  font-style: italic;
  color: var(--accent);
}
.manifesto-p strong { font-weight: 600; }
.manifesto-p-drop::first-letter {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 48px;
  line-height: 0.92;
  float: left;
  padding: 4px 10px 0 0;
  color: var(--accent);
}

.manifesto-foot {
  margin: 44px 0 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--rule-soft);
}
.manifesto-sig {
  margin-top: 36px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ============================================================
   WELCOME (onboarding landing for new users)
   ============================================================ */

.welcome-head {
  border-bottom: 2px solid var(--ink);
  padding-bottom: 24px;
  margin-bottom: 40px;
}
.welcome-head .masthead {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 0 0 18px 0;
}
.welcome-head .masthead em { font-style: italic; color: var(--accent); font-weight: 400; }
.welcome-deck {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 720px;
  margin: 0;
}
.welcome-deck em { font-style: italic; color: var(--accent); }

.welcome-how {
  margin-bottom: 44px;
}
.welcome-how-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.welcome-how-cell {
  padding: 18px 22px 20px 22px;
  border-right: 1px solid var(--rule-soft, var(--rule));
}
.welcome-how-cell:last-child { border-right: 0; }
.welcome-how-label {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}
.welcome-how-label em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.welcome-how-cell p {
  font-family: var(--serif);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 0;
}
.welcome-how-cell p em { font-style: italic; color: var(--ink); }

.welcome-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 10px;
  margin: 0 0 20px 0;
}
.welcome-section-head h2 {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.welcome-section-head h2 em { font-style: italic; color: var(--accent); font-weight: 400; }
.welcome-section-sub {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.welcome-trails {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin-bottom: 44px;
}

.welcome-starters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  margin-bottom: 36px;
}
.welcome-starter-card {
  cursor: pointer;
  padding: 18px 20px 16px 20px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 120ms ease, transform 120ms ease, background 120ms ease;
}
.welcome-starter-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  background: var(--paper-2, var(--paper));
}
.welcome-starter-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 2px;
}
.welcome-starter-meta .sw {
  width: 8px; height: 8px; display: inline-block; border-radius: 50%;
}
.welcome-starter-dom { flex: 1; }
.welcome-starter-glyph {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--accent);
  text-transform: none;
  letter-spacing: 0;
  font-style: normal;
}
.welcome-starter-title {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.welcome-starter-insight {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--ink-soft);
  margin: 2px 0 0 0;
}
.welcome-starter-reason {
  font-family: var(--serif);
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ink-mute);
  margin: 6px 0 0 0;
}
.welcome-starter-cta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 8px;
}
.welcome-trail-card {
  cursor: pointer;
  padding: 22px 22px 18px 22px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}
.welcome-trail-card:hover {
  border-color: var(--accent);
  background: var(--paper-2, var(--paper));
  transform: translateY(-1px);
}
.welcome-trail-doms {
  display: flex; gap: 6px;
}
.welcome-trail-doms .sw {
  width: 10px; height: 10px;
  display: inline-block; border-radius: 50%;
}
.welcome-trail-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}
.welcome-trail-blurb {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.45;
}
.welcome-trail-foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.welcome-trail-cta { color: var(--accent); }

.welcome-skip {
  text-align: center;
  margin-top: 12px;
  margin-bottom: 24px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.welcome-skip span {
  cursor: pointer;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
  transition: color 120ms ease, border-color 120ms ease;
}
.welcome-skip span:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ─── Welcome plate gallery ─────────────────────────────────────────────
   Replaces the old 4-card starter list with a wider, image-led gallery
   of starting plates. Each card uses the Plate primitive in a compact
   frame; click hands off to Study with a one-shot first-session anchor. */
.welcome-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 44px;
}
.welcome-plate-card {
  cursor: pointer;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font: inherit;
  color: inherit;
  transition: border-color 120ms ease, transform 120ms ease, background 120ms ease;
}
.welcome-plate-card:hover {
  border-color: var(--accent);
  background: var(--paper-2, var(--paper));
  transform: translateY(-1px);
}
.welcome-plate-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.welcome-plate-frame {
  aspect-ratio: 1 / 1;
  background: var(--paper-soft, var(--paper));
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.welcome-plate-frame .plate {
  width: 100%;
  height: 100%;
  margin: 0;
  border: 0;
  padding: 0;
}
.welcome-plate-frame .plate-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.welcome-plate-frame .glyph {
  font-family: var(--serif);
  font-size: 72px;
  color: var(--d, var(--accent));
  line-height: 1;
}
.welcome-plate-glyph {
  font-family: var(--serif);
  font-size: 72px;
  color: var(--d, var(--accent));
  line-height: 1;
}
.welcome-plate-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-top: 6px;
}
.welcome-plate-meta .sw {
  width: 8px; height: 8px; display: inline-block; border-radius: 50%;
  background: var(--d);
}
.welcome-plate-dom { flex: 1; }
.welcome-plate-title {
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 400;
  letter-spacing: -0.005em;
  color: var(--ink);
  line-height: 1.25;
}
.welcome-plate-insight {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink-soft);
}
.welcome-section-head-sub {
  margin-top: 36px;
}

/* ─── Study Phase A · picker surface ────────────────────────────────────
   The picker is intentionally centered and quiet — it's a choice, not a
   dashboard. Tile grid is 4×3 on wide viewports, collapsing on narrow.
   Quick-pick rail beneath gives Surprise me / Weakest / Continue trail. */
.study-pick-wrap {
  background: var(--paper-soft, var(--paper));
}
.study-pick-chrome {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.study-pick-chrome .chrome-c { flex: 1; }
.study-pick {
  margin: 56px auto;
  width: min(960px, calc(100% - 80px));
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.study-pick-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 14px;
}
.study-pick-h {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 0 0 14px 0;
  color: var(--ink);
}
.study-pick-deck {
  font-family: var(--serif);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 36px 0;
}
.study-pick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 32px;
}
.study-pick-tile {
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--d);
  border-radius: 2px;
  padding: 14px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}
.study-pick-tile:hover {
  border-color: var(--accent);
  border-left-color: var(--d);
  background: var(--paper-2, var(--paper));
  transform: translateY(-1px);
}
.study-pick-tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.study-pick-tile .sp-sw {
  display: none;
}
.sp-name {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.sp-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  display: flex;
  gap: 6px;
  align-items: baseline;
}
.sp-due { color: var(--accent); }
.sp-unread { color: var(--ink-soft); }
.sp-empty { color: var(--ink-faint); text-transform: uppercase; }
.sp-sep { color: var(--ink-faint); }

.study-pick-quick {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  border-top: 1px solid var(--rule);
  padding-top: 22px;
}
.study-pick-quick-btn {
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-align: left;
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 12px 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  transition: border-color 120ms ease, background 120ms ease;
}
.study-pick-quick-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--paper-2, var(--paper));
}
.study-pick-quick-btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.spq-glyph {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}
.spq-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.spq-title {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
}
.spq-sub {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.spq-kbd {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  border: 1px solid var(--rule);
  padding: 2px 6px;
  border-radius: 2px;
}

/* ─── Study first-run summary intro ─────────────────────────────────────
   When the summary is reached via Welcome's first-session handoff, lead
   the card stack with a small framing card explaining the rhythm. */
.first-run-intro {
  border-color: var(--accent) !important;
  background: color-mix(in oklab, var(--accent) 4%, var(--paper));
}
.first-run-h {
  font-family: var(--serif);
  font-style: italic;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 6px 0 10px 0;
}
.first-run-body {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  max-width: 56ch;
}

/* "Saved to your record" — surfaces after concept-page dwell crosses the
   read threshold. Dignified (typographic, accent-tinted, no animation
   fireworks), but unmistakable. */
.brief-saved {
  margin-top: 24px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--rule);
  border-left: 2px solid var(--accent);
  background: color-mix(in oklab, var(--accent) 4%, var(--paper));
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  animation: brief-saved-in 320ms ease both;
}
.brief-saved .bs-mark {
  color: var(--accent);
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0;
}
.brief-saved .bs-label {
  letter-spacing: 0.10em;
}
.brief-saved .bs-label-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: inherit;
  cursor: pointer;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
.brief-saved .bs-label-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.brief-saved .bs-arrow {
  color: var(--ink-faint);
  font-family: var(--serif);
  letter-spacing: 0;
  margin-left: 2px;
}
.brief-saved .bs-label-link:hover .bs-arrow { color: var(--accent); }
.brief-saved .bs-sep {
  color: var(--ink-faint);
  letter-spacing: 0;
}
.brief-saved .bs-action {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  letter-spacing: 0.10em;
  color: var(--ink-mute);
  cursor: pointer;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
.brief-saved .bs-action:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.brief-saved-later {
  border-left-color: var(--ink-soft);
  background: color-mix(in oklab, var(--ink-soft) 4%, var(--paper));
}
.brief-saved-later .bs-mark {
  color: var(--ink);
  font-size: 16px;
}
.brief-saved-fav {
  /* tint slightly warmer when the heart is filled, keep accent border */
  border-left-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 7%, var(--paper));
}
.brief-saved-fav .bs-mark {
  color: var(--accent);
  font-size: 14px;
}
.brief-saved .bs-fav-toggle {
  /* slightly larger glyph for the heart inside the action row */
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.brief-saved .bs-fav-glyph {
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-mute);
  transition: color 120ms ease;
}
.brief-saved .bs-fav-toggle:hover .bs-fav-glyph,
.brief-saved .bs-fav-toggle.is-on .bs-fav-glyph {
  color: var(--accent);
}

/* Concept action row — Share button + Read-later toggle. Sits in the
   right rail under the suggested-next card so it's always reachable
   without waiting for the brief-dwell pill. */
.concept-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.btn-read-later {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-mute);
  cursor: pointer;
  border-radius: 999px;
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}
.btn-read-later:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}
.btn-read-later.active {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}
.btn-read-later .brl-glyph {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
}

/* Persistent favorite toggle — sibling of btn-read-later. Filled heart
   on activation; uses accent colour as the active tint to align with
   the rest of the brief-saved chrome. */
.btn-favorite {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-mute);
  cursor: pointer;
  border-radius: 999px;
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}
.btn-favorite:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}
.btn-favorite.active {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}
.btn-favorite .bfv-glyph {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  color: inherit;
}
.btn-favorite:not(.active) .bfv-glyph {
  /* unfilled heart leans neutral; tint only on hover/active */
  color: var(--ink-faint);
}
.btn-favorite:not(.active):hover .bfv-glyph {
  color: var(--accent);
}

/* Persistent "add to study queue" toggle — sibling of btn-favorite.
   Open diamond → filled diamond, accent tint when in the queue. */
.btn-queue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-mute);
  cursor: pointer;
  border-radius: 999px;
  transition: border-color 120ms ease, background 120ms ease, color 120ms ease;
}
.btn-queue:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}
.btn-queue.active {
  color: var(--paper);
  background: var(--accent);
  border-color: var(--accent);
}
.btn-queue .bqu-glyph {
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0;
  text-transform: none;
  color: inherit;
}
.btn-queue:not(.active) .bqu-glyph {
  color: var(--ink-faint);
}
.btn-queue:not(.active):hover .bqu-glyph {
  color: var(--accent);
}
@keyframes brief-saved-in {
  from { opacity: 0; transform: translateY(-2px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px) {
  .study-pick { margin: 32px auto; }
  .study-pick-h { font-size: 32px; }
}

/* MediaClip seek slider — slim native range styled to match brief chrome. */
input[type="range"].media-clip-seek {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: transparent;
  padding: 6px 0;
}
input[type="range"].media-clip-seek::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--rule-soft);
  border-radius: 2px;
}
input[type="range"].media-clip-seek::-moz-range-track {
  height: 4px;
  background: var(--rule-soft);
  border-radius: 2px;
  border: none;
}
input[type="range"].media-clip-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  margin-top: -4px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--rule);
  cursor: inherit;
}
input[type="range"].media-clip-seek::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 1px var(--rule);
  cursor: inherit;
}
input[type="range"].media-clip-seek:disabled {
  opacity: 0.45;
}

/* ─── Trail landing page (route "trail") ──────────────────────────────
   The reader meets the editorial intro, the section-grouped step preview,
   the closing coda, and a Begin/Continue CTA. Typography mirrors the
   concept-page register — Fraunces serif body, mono labels, oxblood
   accent. Centered max-width column. */
.trail-page {
  max-width: 760px;
}
.trail-share-btn {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 4px 12px;
  cursor: pointer;
}
.trail-share-btn:hover { color: var(--accent); border-color: var(--accent); }

.trail-head {
  margin: 18px 0 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--rule-soft);
}
/* Sumi-e hero on the trail landing page. Sits above the domain
   swatches; gives the multi-step arc one visual anchor that binds
   the page together. Source images are square 1024×1024; we cap at
   ~360px so the hero anchors the page without dominating it. */
.trail-hero {
  display: block;
  width: min(360px, 100%);
  height: auto;
  margin: 0 auto 20px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-soft);
}
[data-mode="dark"] .trail-hero {
  filter: invert(0.86) hue-rotate(180deg);
}
/* Smaller hero on Today's trail strip. Bleeds to the card's inner
   edges via negative margins matched to .today-trail-card padding
   (14px / 16px). Source images are square; no aspect-ratio override
   so the natural 1:1 ratio displays the full image without crop. */
.today-trail-hero {
  display: block;
  width: calc(100% + 32px);
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: -14px -16px 12px;
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper-soft);
}
/* Welcome card uses 22px padding all around — match. */
.welcome-trail-hero {
  display: block;
  width: calc(100% + 44px);
  height: auto;
  object-fit: contain;
  object-position: center;
  margin: -22px -22px 4px;
  border-bottom: 1px solid var(--rule-soft);
  background: var(--paper-soft);
}
[data-mode="dark"] .today-trail-hero,
[data-mode="dark"] .welcome-trail-hero {
  filter: invert(0.86) hue-rotate(180deg);
}
.trail-domains {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.trail-domains .sw {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.trail-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 38px;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 10px;
}
.trail-meta {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.trail-blurb {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
}
.trail-intro {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0 0 32px;
}
.trail-intro p { margin: 0; }

.trail-section { margin: 28px 0; }
.trail-section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--accent);
  margin: 0 0 6px;
}
.trail-section-part { color: var(--ink-mute); }
.trail-section-title-text {
  font-family: var(--serif);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 18px;
  font-weight: 400;
  color: var(--ink);
}
.trail-section-prelude {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 2px solid var(--rule-soft);
}

.trail-step-list,
.trail-step-list-flat {
  list-style: none;
  padding: 0;
  margin: 0 0 10px;
}
.trail-step-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--rule-soft);
  cursor: pointer;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}
.trail-step-row:last-child { border-bottom: 1px solid var(--rule-soft); }
.trail-step-row:hover { background: var(--paper-2); }
.trail-step-dom {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
  margin-top: 6px;
}
.trail-step-title {
  font-weight: 500;
  color: var(--ink);
  flex: 0 0 auto;
}
.trail-step-sep { color: var(--ink-faint); flex: 0 0 auto; }
.trail-step-note {
  font-style: italic;
  color: var(--ink-mute);
  flex: 1;
}

.trail-coda {
  margin: 36px 0 24px;
  padding: 20px 22px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-2);
  border-radius: 2px;
}
.trail-coda-title {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
  font-weight: 500;
}
.trail-coda p {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0;
}

.trail-cta-row {
  display: flex;
  justify-content: center;
  margin: 32px 0 60px;
}
.trail-cta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 28px;
  background: var(--accent);
  color: var(--paper);
  border: none;
  border-radius: 2px;
  cursor: pointer;
}
.trail-cta:hover { opacity: 0.9; }

/* ============================================================
   RESPONSIVE / MOBILE — consolidated block
   ============================================================
   The site was built desktop-first with a fixed 1440-wide viewport.
   This block adapts every multi-column surface to narrow viewports
   (phones + small tablets) and provides the hamburger-drawer nav
   that replaces the always-visible 220px sidebar.

   Breakpoint conventions (also exposed as --bp-* custom properties
   near :root for documentation — @media doesn't accept var()):
     480px — phone
     720px — tablet / narrow-laptop cutoff
     880px — already used by chronicle for an early stack
   ============================================================ */

/* ---------- hamburger button (top-left of userbar on narrow only) ---------- */

.nav-hamburger {
  display: none; /* desktop: hidden — see narrow-viewport block below */
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 32px;
  margin-right: auto; /* pushes locale + badge to the right of the userbar */
  padding: 0;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.nav-hamburger-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}
.nav-hamburger-bars > span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
}

/* ---------- mobile nav backdrop ---------- */
.nav-backdrop {
  display: none; /* shown only on narrow */
  position: fixed;
  inset: 0;
  background: rgba(20, 16, 12, 0.32);
  z-index: 89; /* under the drawer (90), over the page */
}

/* ---------- nav drawer close-X (visible only when nav is a drawer) ---------- */
.nav-close {
  display: none; /* desktop sidebar: not visible */
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ============================================================
   NARROW VIEWPORT (≤ 720px) — phones + small tablets
   ============================================================ */
@media (max-width: 720px) {
  /* App shell: nav drops out of the grid; main fills the screen. */
  .app,
  .app[style] {
    grid-template-columns: 1fr !important;
  }

  /* Nav becomes a slide-in drawer, off-screen by default. */
  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: min(280px, 84vw);
    height: 100dvh;
    z-index: 90;
    transform: translateX(-100%);
    transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 12px 0 32px -16px rgba(0,0,0,0.32);
    overflow-y: auto;
  }
  .nav[data-mobile-open="true"] { transform: translateX(0); }
  .nav-close { display: flex; align-items: center; justify-content: center; }
  .nav-backdrop { display: block; }

  /* Hamburger appears in the userbar. */
  .nav-hamburger { display: inline-flex; }

  /* Userbar compresses: less padding, gap tightens, hamburger anchors
     to the left while locale + badge stay right. */
  .app-userbar {
    padding: 10px 14px 0 14px;
    gap: 8px;
  }

  /* Page padding compressed; max-width cap removed (no point on a
     ~375px screen). */
  .page {
    padding: 20px 18px 48px 18px;
    max-width: none;
  }

  /* Today: lede + sidebar stacks. The sidebar drops below the lede.
     Stat grid drops to 1 column on the smallest phones (see ≤480 below). */
  .today-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .today-sidebar { position: static; }

  /* Concept body: marginalia drops below the body, no longer sticky. */
  .concept-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .concept-marginalia {
    position: static;
  }

  /* Concept head: the hero image was forcing 1.2fr at 500px min-height,
     squeezing the title into the remaining 1fr column and overlapping the
     short text. Stack image above the title block instead. */
  .concept-head {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-bottom: 28px;
  }
  .concept-hero {
    min-height: 0;
    aspect-ratio: 5/4;
    max-height: 60vh;
  }
  .concept-hero .glyph { font-size: clamp(120px, 36vw, 220px); }
  .concept-title-block h1 {
    font-size: clamp(34px, 9vw, 48px);
  }
  .concept-title-block .insight {
    font-size: 18px;
    margin-top: 14px;
  }
  .concept-title-block .folio-row {
    flex-wrap: wrap;
    gap: 14px 24px;
    margin-top: 18px;
    padding-top: 14px;
  }

  /* Welcome page card grids: tighter min so cards fit phone width. */
  .welcome-trails  { grid-template-columns: 1fr; }
  .welcome-starters { grid-template-columns: 1fr; }

  /* Related-plates / bibliography at the foot of every brief: collapse the
     two-column grid to one so long titles can't push the page wider than
     the viewport (which forced mobile readers to pinch-to-zoom out on
     directly-linked briefs). */
  .biblio { grid-template-columns: minmax(0, 1fr); }

  /* Tweaks panel: don't overflow the viewport. */
  .tweaks-panel {
    width: auto;
    max-width: calc(100vw - 24px);
    right: 12px;
    bottom: 12px;
  }
  .tweaks-fab { right: 12px; bottom: 12px; }

  /* Library declutter on narrow screens:
       - 3 columns instead of 5 so cards stay legible
       - hide ILL. № overlay (collides with dom-tag on a smaller plate)
       - drop the importance/difficulty pips badge (low-signal, eats
         vertical space; users go to the concept page for that detail) */
  .concept-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px 14px;
  }
  [data-density="compact"] .concept-grid,
  [data-density="loose"] .concept-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px 14px;
  }
  .concept-card .plate .no { display: none; }
  /* Hide the importance/difficulty badges; keep the mastery badge
     (which uses the same .badges row but renders a tier+% tag instead
     of imp/diff pips when `entry.seen > 0`). To avoid hiding both, we
     hide pips specifically — anything with .pips inside .badges is the
     imp/diff variant. */
  .concept-card .badges:has(.pips) { display: none; }

  /* Annals: the swimlane visualization is hidden on phone-width via the
     JSX-level useNarrowViewport branch. The chrome below still applies
     since the chrome + filters + mobile list all live in .annals-wrap.
     The wrap drops grid layout for flex-column so the list takes the
     remaining height regardless of how many auto rows precede it. */
  .annals-wrap {
    display: flex;
    flex-direction: column;
    height: 100dvh;
  }
  .annals-mobile-list { flex: 1 1 auto; min-height: 0; }

  /* Title compresses — the desktop 38px headline eats too much of the
     small viewport. The chrome strip stacks (h1 + HUD on separate lines)
     so the HUD can wrap without colliding with the title. */
  .annals-chrome {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px 18px 10px;
  }
  .annals-title h1 { font-size: 22px; }
  .annals-sub { font-size: 9.5px; }
  .annals-hud { align-items: flex-start; gap: 4px; }
  /* Detail-tier seg is desktop-only — the mobile list doesn't honour
     tier filtering (it shows everything that survives the lens+domain
     filter, since vertical real estate is no longer the constraint). */
  .annals-hud .hud-row:nth-child(2),
  .annals-hud .hud-row.hud-counts { display: none; }

  /* Filters: drop the leading label flex-basis and let chips wrap full
     width. Domain row stays useful, lens row sits above. */
  .annals-filters { padding: 10px 14px 8px; gap: 6px; }
  .annals-filter-row { flex-direction: column; align-items: stretch; gap: 4px; }
  .annals-filter-row .hud-k { flex: 0 0 auto; }
  .lens-chips, .dom-chips { gap: 5px; }
  .chip { font-size: 11px; padding: 3px 9px; }
  .lens-blurb { padding: 6px 14px; font-size: 12.5px; }

  /* Chronicle: already stacks at ≤880 (line ~3467). The 880 → 720
     transition was a duplicate-narrow check; consolidating here. */
  .chrono-main {
    grid-template-columns: 1fr;
  }
}

/* Annals mobile list — chronological flow rendering used on phone
   viewports in place of the swimlane visualization. Each row is a
   button so the existing AnnalsDrawer opens on tap. The desktop view
   never renders this component, so the styles only apply on mobile. */
.annals-mobile-list {
  overflow-y: auto;
  padding: 4px 14px 36px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.annals-mlist-item {
  --d: var(--ink);
  display: grid;
  grid-template-columns: 96px 10px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 11px 6px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule-soft);
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}
.annals-mlist-item:hover,
.annals-mlist-item:focus-visible {
  background: var(--paper-deep);
  outline: 0;
}
.annals-mlist-year {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  white-space: nowrap;
}
.annals-mlist-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--d);
  justify-self: center;
}
.annals-mlist-label {
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.25;
  color: var(--ink);
}
.annals-mlist-item.is-figure .annals-mlist-label {
  font-style: italic;
}
.annals-mlist-dom {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ============================================================
   PHONE (≤ 480px) — tightest layout
   ============================================================ */
@media (max-width: 480px) {
  /* Today's stat grid drops from 3 cols to 2. */
  .stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  /* Page padding even tighter on the smallest screens. */
  .page {
    padding: 16px 14px 40px 14px;
  }
  /* Chronicle summary modal: kill the 480px min that overflowed on
     a 375px phone. */
  .chrono-summary {
    min-width: 0;
    width: calc(100vw - 24px);
  }
  /* Library: 3 cols at 720 → 2 cols on phones. The plate retains its
     4/5 aspect so each card stays legible without horizontal scroll. */
  .concept-grid,
  [data-density="compact"] .concept-grid,
  [data-density="loose"] .concept-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 12px;
  }
  /* Plate badges: shrink the dom-tag font on tiny plates so it doesn't
     wrap. ILL. № is already hidden by the 720 rule. */
  .concept-card .plate .dom-tag {
    font-size: 8.5px;
    right: 8px;
    top: 7px;
  }
  .concept-card .plate .dom-tag .swatch {
    width: 6px; height: 6px;
  }
  /* Card titles shrink to fit the narrower column. */
  .concept-card h4 { font-size: 15px; }
  .concept-card .insight { font-size: 12.5px; }
  .concept-card .meta-row { font-size: 9px; }
}

/* When the drawer is open, prevent body scroll behind the backdrop. */
.app[data-nav-open="true"] {
  overflow: hidden;
}

/* ============================================================
   COARSE POINTER (touch) — hit-target enlargement
   Apple HIG / Material both call for 44px minimum on tappable
   controls. The desktop styles trade compactness for density;
   on touch we trade density for tappability.
   ============================================================ */
@media (pointer: coarse) {
  /* Nav drawer items — drawer width is wide enough; push vertical
     padding to clear 44px. */
  .nav-item {
    min-height: 44px;
    padding-top: 10px;
    padding-bottom: 10px;
  }
  /* Hamburger and close-X in the nav drawer. */
  .nav-hamburger {
    width: 44px;
    height: 44px;
  }
  .nav-close {
    width: 44px;
    height: 44px;
    font-size: 24px;
  }
  /* Locale toggle / locale-select — match top-bar height to other
     touch targets. */
  .locale-toggle,
  .locale-select {
    height: 40px;
    min-width: 56px;
  }
  /* Mode toggle in the nav-foot — was 10px font + 4px padding (~20px). */
  .mode-toggle {
    min-height: 40px;
    padding: 10px 14px;
  }
  /* Standard text buttons — make sure they clear the threshold. */
  .btn {
    min-height: 40px;
  }
}

/* ─── User-badge name/email click target ─────────────────────────────
   The name+email block in the signed-in badge is now an inline button
   that opens the account page. Reset native button chrome so it reads
   like the original two-line label, but keep cursor + focus affordance. */
.user-badge-open {
  appearance: none; -webkit-appearance: none;
  background: none;
  border: 0;
  padding: 0;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: inherit;
}
.user-badge-open:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
.user-badge-open:hover .user-badge-name {
  color: var(--accent);
}
.user-badge-email {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
}

/* Sign-out cue inside the signed-in badge. Secondary to the name+email
   open target, so it stays muted; a left hairline separates it from the
   name/email without adding a second boxed widget. Editorial italic
   matches the .user-badge-signin chip used in the logged-out state. */
.user-badge-signout {
  appearance: none; -webkit-appearance: none;
  background: none;
  border: 0;
  border-left: 1px solid var(--rule);
  padding: 2px 0 2px 10px;
  margin-left: 2px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink-mute);
  cursor: pointer;
  line-height: 1.2;
  transition: color 120ms ease;
}
.user-badge-signout:hover {
  color: var(--accent);
}
.user-badge-signout:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ─── Account page ───────────────────────────────────────────────────
   Three vertically-stacked sections (Profile / Reading / Account) on
   the standard .page container. Each section gets a small caps h2
   matching the editorial register used elsewhere. */
.account-page .runhead {
  /* Push the page title to the left, "← back" chip to the right. */
}
.account-back {
  appearance: none; -webkit-appearance: none;
  background: transparent;
  border: 0;
  padding: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 12.5px;
  color: var(--ink-mute);
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: color .12s;
}
.account-back:hover { color: var(--accent); }

.account-section {
  margin: 0 0 44px;
}
.account-section-h {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  font-weight: 500;
}

/* Profile: simple definition list. */
.account-kv {
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: 160px 1fr;
  row-gap: 8px;
  column-gap: 24px;
}
.account-kv > div { display: contents; }
.account-kv dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  align-self: center;
}
.account-kv dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
}

/* Stats: 6 tiles in a responsive grid, plus a streak line below. */
.account-stats {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}
.account-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 3px;
}
.account-stats b {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  color: var(--ink);
  font-variant-numeric: lining-nums tabular-nums;
}
.account-stats span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.account-streak {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--ink-mute);
}
.account-lastread {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
}

/* Account controls: each control row is a collapsible disclosure. */
.account-control {
  border-top: 1px solid var(--rule);
}
.account-control:last-child { border-bottom: 1px solid var(--rule); }
.account-control-toggle {
  appearance: none; -webkit-appearance: none;
  width: 100%;
  background: transparent;
  border: 0;
  padding: 14px 0;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color .12s;
}
.account-control-toggle::after {
  content: "›";
  font-family: var(--mono);
  font-size: 18px;
  color: var(--ink-mute);
  transform: rotate(0deg);
  transition: transform .14s, color .12s;
}
.account-control.is-open .account-control-toggle::after {
  transform: rotate(90deg);
  color: var(--accent);
}
.account-control-toggle:hover { color: var(--accent); }

.account-control-body {
  padding: 4px 0 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 480px;
}
.account-control-body-intro {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.45;
}
.account-control-body label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.account-control-body label > span {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.account-control-body input {
  appearance: none; -webkit-appearance: none;
  background: var(--paper-deep, var(--paper));
  border: 1px solid var(--rule);
  padding: 9px 11px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
  border-radius: 2px;
}
.account-control-body input:focus-visible {
  outline: 1.5px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

/* Data export — non-collapsible static row matching the disclosure rhythm. */
.account-control-static {
  padding: 14px 0 18px;
}
.account-control-static-h {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  margin-bottom: 8px;
}

.account-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}
.account-info {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--accent);
}

/* Secondary + danger button variants — reuse .btn metrics. */
.btn-secondary {
  appearance: none; -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 8px 16px;
  font-family: var(--serif);
  font-size: 14px;
  cursor: pointer;
  border-radius: 2px;
  transition: color .12s, border-color .12s, background .12s;
}
.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.btn-danger {
  appearance: none; -webkit-appearance: none;
  background: transparent;
  border: 1px solid color-mix(in oklab, #b00 50%, var(--rule));
  color: #b00;
  padding: 8px 16px;
  font-family: var(--serif);
  font-size: 14px;
  cursor: pointer;
  border-radius: 2px;
  transition: color .12s, border-color .12s, background .12s;
}
.btn-danger:hover {
  background: #b00;
  color: var(--paper);
  border-color: #b00;
}
.btn-danger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.account-control-danger .account-control-toggle {
  color: #b00;
}
.account-control-danger .account-control-toggle:hover {
  color: #b00;
}

@media (max-width: 720px) {
  .account-kv {
    grid-template-columns: 1fr;
    row-gap: 2px;
  }
  .account-kv dt { margin-top: 8px; }
}

/* ============================================================
   Study — free-text recall (who / work) and chronology cards
   ============================================================ */

/* The .study-card layout is shared; the type-specific class adds layout
   adjustments on top. */

/* ── Free-text card (who, work) ─────────────────────────────── */
.ftc-stem {
  /* same look as .card-stem so the question prompt reads consistently */
}
.ftc-host {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
  padding: 18px 22px 20px 22px;
}
.ftc-image {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  background: var(--paper-deep);
  box-shadow: 0 1px 0 var(--rule-soft);
}
.ftc-image-portrait {
  aspect-ratio: 3 / 4;
}
.ftc-image-work {
  aspect-ratio: 4 / 3;
  background: var(--paper-2);
}
.ftc-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ftc-image-work .ftc-img {
  object-fit: contain;
  background: var(--paper-2);
}
.ftc-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
  padding-top: 4px;
}
.ftc-input {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.4;
  padding: 8px 10px;
  border: 0;
  border-bottom: 1.5px solid var(--ink-mute);
  background: transparent;
  color: var(--ink);
  outline: none;
  width: 100%;
  letter-spacing: -0.005em;
}
.ftc-input:focus {
  border-bottom-color: var(--accent);
}
.ftc-input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}
.ftc-submit {
  align-self: flex-start;
}
.ftc-submit[disabled] {
  opacity: 0.5;
  cursor: default;
}
.ftc-feedback {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
  padding: 12px 14px;
  border-left: 3px solid var(--ink-mute);
  background: var(--paper-soft);
  color: var(--ink);
}
.ftc-correct { border-left-color: var(--accent); }
.ftc-near    { border-left-color: var(--ink-soft); }
.ftc-miss    { border-left-color: #b04040; }
.ftc-line { margin: 0; }
.ftc-line + .ftc-line { margin-top: 4px; }
.ftc-line b { font-weight: 600; }
.ftc-line i { font-style: italic; color: var(--ink-mute); }
.ftc-artist {
  margin: -4px 22px 14px 22px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-mute);
}

/* ── Chronology card (chrono) ───────────────────────────────── */
.study-card-chrono {
  /* Tighter side padding so the ribbon has more room to breathe. */
  padding-left: 0;
  padding-right: 0;
}
.study-card-chrono .card-head {
  padding: 0 44px;
  margin-bottom: 18px;
}
.chrono-card-host {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  align-items: stretch;
  position: relative;
  min-height: 480px;
  border-top: 1px solid var(--rule-soft);
}
.chrono-card-host.is-dragging {
  cursor: grabbing;
}
.chrono-card-side {
  position: relative;
  padding: 20px 22px 22px 22px;
  border-right: 1px solid var(--rule-soft);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chrono-card-portrait {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: 2px;
  overflow: hidden;
  background: var(--paper-deep);
  cursor: grab;
  user-select: none;
  touch-action: none;
  box-shadow: 0 1px 0 var(--rule-soft);
}
.chrono-card-portrait.is-locked { cursor: default; }
.chrono-card-portrait:active:not(.is-locked) { cursor: grabbing; }
.chrono-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}
.chrono-card-hint {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 8px 12px;
  text-align: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: linear-gradient(0deg, rgba(244, 239, 228, 0.92), transparent 100%);
  pointer-events: none;
}
/* Live year readout — replaces the hint text while the user is dragging
   on touch. Big enough to read at a glance with the finger on the band. */
.chrono-card-hint.is-readout {
  padding: 10px 12px 12px;
  background: linear-gradient(0deg, rgba(244, 239, 228, 0.98), rgba(244, 239, 228, 0.85) 70%, transparent 100%);
}
.chrono-card-hint .cch-year {
  font-family: var(--mono);
  font-size: 22px;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--accent);
  font-feature-settings: "tnum";
  font-weight: 600;
}
.chrono-card-result {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ccr-name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
}
.ccr-span {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-mute);
  font-feature-settings: "tnum";
}
.ccr-band {
  margin-top: 4px;
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.4;
  padding: 10px 12px;
  border-left: 3px solid var(--ink-mute);
  background: var(--paper-soft);
}
.ccr-band.band-perfect { border-left-color: var(--accent); }
.ccr-band.band-close   { border-left-color: var(--ink-soft); }
.ccr-band.band-era     { border-left-color: var(--ink-mute); }
.ccr-band.band-miss    { border-left-color: #b04040; }

.chrono-card-ribbon {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--paper-2);
  overflow: hidden;
  user-select: none;
}
.chrono-card-ribbon .era-band { min-height: 88px; }
.chrono-card-ribbon .era-band.expanded { min-height: 200px; }
/* The ribbon is always the aim surface on touch — pointerdown anywhere
   on it starts the swipe-to-place gesture (no portrait pickup needed).
   So we always swallow touch gestures here, not just while dragging. */
.chrono-card-ribbon,
.chrono-card-ribbon .era-band {
  touch-action: none;
}

/* Subtle "active band" highlight for touch — the band under the needle
   gets a fill nudge so the user can read which era they're aiming in,
   without the expensive expand/relayout that desktop uses. */
.chrono-card-ribbon .era-band.is-active {
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--accent);
}

/* Touch slider needle — one continuous horizontal line across the full
   ribbon at the finger's Y, with a big year readout pinned to the
   right edge so the finger doesn't cover it. */
.chrono-needle {
  position: absolute;
  left: 0;
  right: 0;
  height: 0;
  pointer-events: none;
  z-index: 10;
  display: flex;
  align-items: center;
}
.chrono-needle-line {
  flex: 1;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(244, 239, 228, 0.4);
}
.chrono-needle-year {
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: var(--accent);
  padding: 4px 10px;
  border-radius: 2px;
  font-feature-settings: "tnum";
  margin-right: 12px;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(26, 23, 21, 0.18);
}

/* "↕" swipe-hint that pulses up-and-down at the tap point when a
   fat-finger tap is refused (no real swipe → no commit). Teaches the
   user that the placement requires aiming, not just tapping. */
.chrono-swipe-hint {
  position: fixed;
  transform: translate(-50%, -50%);
  font-size: 38px;
  line-height: 1;
  color: var(--accent);
  text-shadow: 0 1px 2px rgba(26, 23, 21, 0.18);
  font-weight: 600;
  pointer-events: none;
  z-index: 65;
  animation: chrono-swipe-hint 1.05s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.chrono-swipe-hint .csh-arrow {
  display: inline-block;
  will-change: transform;
  animation: chrono-swipe-arrow 1.05s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
@keyframes chrono-swipe-hint {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes chrono-swipe-arrow {
  0%   { transform: translateY(0) scale(0.7); }
  20%  { transform: translateY(0) scale(1.0); }
  40%  { transform: translateY(-18px) scale(1.0); }
  60%  { transform: translateY(18px) scale(1.0); }
  80%  { transform: translateY(0) scale(1.0); }
  100% { transform: translateY(0) scale(0.9); }
}

.chrono-card-drag-sprite {
  position: fixed;
  width: 72px;
  height: 96px;
  pointer-events: none;
  z-index: 60;
  transform: translate(-50%, -55%);
  filter: drop-shadow(0 6px 12px rgba(26, 23, 21, 0.22));
}
.ccds-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 2px;
}

.chrono-card-confirm {
  position: absolute;
  right: 24px;
  bottom: 24px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 4px 12px rgba(26, 23, 21, 0.10);
  z-index: 12;
  min-width: 320px;
}
.ccc-text {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  font-weight: 500;
}
.ccc-slider-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
}
.ccc-slider-min,
.ccc-slider-max {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  font-feature-settings: "tnum";
  white-space: nowrap;
}
.ccc-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 28px;
  background: transparent;
  cursor: pointer;
  margin: 0;
  touch-action: pan-x;
}
.ccc-slider:focus { outline: none; }
.ccc-slider::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--rule);
  border-radius: 2px;
}
.ccc-slider::-moz-range-track {
  height: 4px;
  background: var(--rule);
  border-radius: 2px;
}
.ccc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--accent);
  box-shadow: 0 1px 3px rgba(26, 23, 21, 0.18);
  margin-top: -12px;
  cursor: grab;
  transition: transform 80ms ease;
}
.ccc-slider::-webkit-slider-thumb:active {
  cursor: grabbing;
  transform: scale(1.08);
}
.ccc-slider::-moz-range-thumb {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--accent);
  box-shadow: 0 1px 3px rgba(26, 23, 21, 0.18);
  cursor: grab;
}
.ccc-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 2px;
}

.chrono-card-foot {
  position: absolute;
  right: 24px;
  bottom: 24px;
  z-index: 12;
}

/* ── Who-card title is masked while ungraded; reveal post-grade ─── */
.study-card-who .card-title {
  font-style: italic;
  color: var(--ink-mute);
}

/* ── Skipped session-dot variant ─────────────────────────────── */
.sdot-skipped {
  opacity: 0.4;
}

/* ── Missed-row variant for synthetic concepts (no nav target) ─── */
.miss-row-static {
  cursor: default;
}
.miss-row-static:hover { background: transparent; }

/* ── Responsive: stack on narrow viewports ──────────────────── */
/* ── Figure card — fused portrait → name → year ─────────────── */
.figure-name-host {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: start;
  padding: 18px 22px 20px 22px;
}
.figure-name-portrait {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 2px;
  background: var(--paper-deep);
  box-shadow: 0 1px 0 var(--rule-soft);
}
.figure-name-portrait .ftc-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.figure-name-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding-top: 4px;
}
.figure-skip-btn {
  /* sits between hint and submit */
}
.figure-name-reveal {
  margin: 0 22px 14px 22px;
  padding: 12px 16px;
  border-left: 3px solid var(--ink-mute);
  background: var(--paper-soft);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.figure-name-reveal.ftc-correct { border-left-color: var(--accent); }
.figure-name-reveal.ftc-near    { border-left-color: var(--ink-soft); }
.figure-name-reveal.ftc-miss    { border-left-color: #b04040; }
.figure-name-reveal .fnr-line b { font-weight: 600; }
.figure-name-reveal .fnr-line i { font-style: italic; color: var(--ink-mute); }
.figure-name-reveal .fnr-mute {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.figure-name-reveal .fnr-prompt {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-mute);
  font-size: 14px;
  margin-top: 2px;
}

/* ── Name card (sparse prompt → typed answer, optional hint) ── */
.name-stem {
  font-style: normal;
  font-size: 22px;
  color: var(--ink);
}
.name-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 8px 0 0 0;
  max-width: 560px;
}
.name-clue {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.name-clue-domain {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 500;
}
.name-clue-domain .sw {
  width: 9px;
  height: 9px;
  background: var(--d, var(--ink));
  display: inline-block;
}
.name-clue-born {
  font-feature-settings: "tnum";
  letter-spacing: 0.06em;
}
.name-input {
  font-size: 20px;
  max-width: 460px;
}
.name-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.name-hint-btn {
  margin-right: auto;
}
.name-hint-btn[disabled] {
  opacity: 0.55;
  cursor: default;
}
.name-hint {
  margin-top: 4px;
  padding: 10px 14px;
  border-left: 3px solid var(--ink-soft);
  background: var(--paper-soft);
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.name-hint-label {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.name-hint-text {
  line-height: 1.45;
}
.name-lifespan {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  font-feature-settings: "tnum";
}
.ftc-line-mute {
  color: var(--ink-mute);
  font-style: italic;
  font-size: 14px;
  line-height: 1.4;
}

@media (max-width: 760px) {
  .ftc-host {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .ftc-image-portrait {
    max-width: 280px;
    margin: 0 auto;
  }
  .chrono-card-host {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .chrono-card-side {
    border-right: 0;
    border-bottom: 1px solid var(--rule-soft);
    padding: 14px 18px 16px;
  }
  .chrono-card-portrait {
    max-width: 180px;
    margin: 0 auto;
  }
  .chrono-card-ribbon .era-band { min-height: 76px; }
  .chrono-card-ribbon .era-band.expanded { min-height: 180px; }
  /* Confirm dialog: anchor to the bottom of the card on narrow screens
     so the slider has full width to drag in. */
  .chrono-card-confirm {
    left: 12px;
    right: 12px;
    bottom: 12px;
    min-width: 0;
  }
  .ccc-text { font-size: 15px; }
  .ccc-slider { height: 32px; }
  .ccc-slider::-webkit-slider-thumb { width: 32px; height: 32px; margin-top: -14px; }
  .ccc-slider::-moz-range-thumb { width: 32px; height: 32px; }
  .name-stem {
    font-size: 20px;
  }
  .name-input { font-size: 18px; }
  .name-actions {
    flex-wrap: wrap;
    gap: 8px;
  }
  .name-actions .ftc-submit { flex: 1; min-width: 0; }
  .name-hint-btn { margin-right: auto; flex: 0 0 auto; }
  .figure-name-host {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 14px 18px 16px;
  }
  .figure-name-portrait {
    max-width: 220px;
    margin: 0 auto;
  }
  .figure-name-reveal {
    margin: 0 18px 12px 18px;
    padding: 10px 14px;
    font-size: 15px;
  }
}

/* ─── Primer (placement assessment) ──────────────────────────────────
   Three phases sharing one host: picker / probing / report. Aesthetic
   matches Study's phase-A pick screen (tiles, serif headers, mono
   eyebrows) so it reads as a cousin of Study, not a separate world. */

.primer-host {
  margin: 56px auto;
  width: min(1080px, calc(100% - 80px));
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.primer-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.primer-title {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
  margin: 0;
  color: var(--ink);
}
.primer-subhead {
  font-family: var(--serif);
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 64ch;
  margin: 0;
}
.primer-section-h {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0;
}
.primer-resume {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-2, var(--paper));
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
}

/* ── picker tiles ── */
.primer-domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}
.primer-domain-tile {
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--d);
  border-radius: 2px;
  padding: 14px 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 120ms ease, background 120ms ease, transform 120ms ease;
}
.primer-domain-tile:hover:not(:disabled) {
  border-color: var(--accent);
  border-left-color: var(--d);
  background: var(--paper-2, var(--paper));
  transform: translateY(-1px);
}
.primer-domain-tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.primer-domain-tile.is-picked {
  border-color: var(--accent);
  background: var(--paper-2, var(--paper));
  box-shadow: inset 0 0 0 1px var(--accent);
}
.primer-domain-tile.is-disabled {
  cursor: not-allowed;
  opacity: 0.5;
  background: var(--paper-soft, var(--paper));
}
.pdt-folio {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}
.pdt-name {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.pdt-badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: auto;
}
.primer-domain-tile.is-picked .pdt-badge {
  color: var(--accent);
}
.pdt-ceiling {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px dotted var(--rule);
}
.pdt-ceiling-tier {
  text-transform: uppercase;
  letter-spacing: 0.10em;
}
.pdt-ceiling-tier.is-maxed {
  color: var(--accent);
}
.pdt-reset {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  cursor: pointer;
  text-decoration: underline dotted;
  text-underline-offset: 2px;
}
.pdt-reset:hover,
.pdt-reset:focus-visible {
  color: var(--accent);
  outline: none;
}

.primer-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 8px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
}
.primer-foot-count {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ── probing layout (two columns) ── */
.primer-probe-host { gap: 18px; }
.primer-progress-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-2, var(--paper));
  border-radius: 2px;
}
.pps-domain {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
  border-radius: 2px;
}
.pps-domain.is-active {
  background: var(--paper);
  box-shadow: inset 3px 0 0 var(--accent);
}
.pps-domain.is-done { opacity: 0.55; }
.pps-name {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  color: var(--ink);
}
.pps-tier {
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
}
.pps-dots {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}
.pps-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--ink-faint);
}
.pps-dot.is-hit  { background: var(--accent); border-color: var(--accent); }
.pps-dot.is-miss { background: var(--ink-mute); border-color: var(--ink-mute); }
.pps-sw {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--d);
  margin-right: 4px;
  border-radius: 1px;
  transform: translateY(1px);
}

.primer-probe-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.primer-probe-q {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 30px 30px;
  border: 1px solid var(--rule);
  background: var(--paper);
  border-radius: 2px;
}
.primer-q-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.primer-q-stem {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.primer-q-image {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}
.primer-q-image img {
  max-width: 100%;
  max-height: 360px;
  width: auto;
  height: auto;
  border: 1px solid var(--rule);
  background: var(--paper-2, var(--paper));
  cursor: zoom-in;
  display: block;
}
.primer-q-image-credit {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.primer-q-image-zoom {
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 14, 0.86);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 1000;
  cursor: zoom-out;
}
.primer-q-image-zoom img {
  max-width: min(100%, 1100px);
  max-height: calc(100vh - 80px);
  width: auto;
  height: auto;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}
.primer-q-image-zoom-credit {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: rgba(245, 240, 230, 0.7);
  text-align: center;
  max-width: 900px;
}
.primer-input {
  width: 100%;
  font: inherit;
  font-family: var(--serif);
  font-size: 18px;
  padding: 12px 14px;
  border: 1px solid var(--rule);
  background: var(--paper-2, var(--paper));
  border-radius: 2px;
  color: var(--ink);
  outline: none;
  transition: border-color 120ms ease;
}
.primer-input:focus { border-color: var(--accent); }
.primer-split-inputs {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.primer-split-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.primer-split-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.primer-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.primer-actions .btn { flex: 0 0 auto; }

.primer-flash {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
}
.primer-flash.is-correct {
  background: var(--paper-2, var(--paper));
  border-left: 3px solid var(--accent);
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}
.primer-flash.is-correct > span {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
}
.primer-flash.is-wrong {
  background: var(--paper-soft, var(--paper));
  border-left: 3px solid #b04040;
}
.primer-flash.is-half {
  background: var(--paper-soft, var(--paper));
  border-left: 3px solid #c8a64a;
}
.primer-flash.is-half .pf-answer-val.is-got {
  color: var(--accent);
}
.primer-flash.is-half .pf-answer-val.is-missed {
  color: #b04040;
}
/* Anonymous hard-gate panel — replaces the "Next" CTA after a
   not-logged-in visitor spends their one free question. Sits inside the
   grade flash; the explanation aside stays fully readable beside it. */
.primer-anon-gate {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  margin-top: 4px;
  border-radius: 2px;
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--accent);
  background: var(--paper-2, var(--paper));
}
.primer-anon-gate-title {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
}
.primer-anon-gate-body {
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-soft, var(--ink));
}
.primer-anon-gate .btn {
  align-self: flex-start;
  margin-top: 2px;
}
/* The "correct" flash is a horizontal row; when the gate replaces its
   inline Next button it should stack full-width instead. */
.primer-flash.is-correct {
  flex-wrap: wrap;
}
.primer-flash.is-correct .primer-anon-gate {
  flex-basis: 100%;
}
.pf-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.pf-label {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink);
}
.pf-input {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-mute);
}
.pf-answer {
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.pf-answer-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.pf-answer-val {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
}

/* explanation side panel */
.primer-probe-explain {
  padding: 28px 26px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-soft, var(--paper-2, var(--paper)));
  border-radius: 2px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ppe-empty {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-faint);
  line-height: 1.5;
}

/* ── Unified Study landing (Phase 3 of study unification) ────────── */
.study-landing {
  padding-top: 40px;
}
.study-landing-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.study-landing-title {
  font-family: var(--serif);
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 32px 0;
  color: var(--ink);
}
.study-landing-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}
@media (max-width: 720px) {
  .study-landing-cards { grid-template-columns: 1fr; }
  .study-landing-title { font-size: 26px; margin-bottom: 22px; }
}
.study-landing-card {
  text-align: left;
  padding: 22px 22px 18px 22px;
  background: var(--paper-soft, var(--paper-2, var(--paper)));
  border: 1px solid var(--rule);
  border-radius: 4px;
  font: inherit;
  color: inherit;
  cursor: pointer;
  transition: border-color 120ms ease, transform 120ms ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.study-landing-card:hover:not(:disabled),
.study-landing-card:focus-visible:not(:disabled) {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.study-landing-card:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.slc-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.slc-title {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.2;
  color: var(--ink);
}
.slc-body {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-mute);
}
.slc-meta {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}
.study-landing-mcq-row {
  text-align: center;
}
.study-landing-mcq {
  background: transparent;
  border: none;
  font-family: var(--serif);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink-mute);
  cursor: pointer;
  padding: 6px 12px;
  border-bottom: 1px dotted var(--rule);
}
.study-landing-mcq:hover,
.study-landing-mcq:focus-visible { color: var(--accent); border-bottom-style: solid; border-bottom-color: var(--accent); }
.study-landing-back {
  padding: 18px 26px 0 26px;
}
.ppe-heading {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.ppe-body {
  font-family: var(--serif);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
}
/* Near-miss callout: appears when the user's wrong answer matched
   a question-authored `nearMisses[].patterns` entry. Sits between
   the heading and the regular explanation; styled as a quieter,
   italic accent block so it doesn't compete with the body. */
.ppe-nearmiss {
  font-family: var(--serif);
  font-size: 14.5px;
  line-height: 1.55;
  font-style: italic;
  color: var(--ink-mute);
  padding: 8px 12px;
  border-left: 2px solid var(--rule);
  background: var(--paper-2, transparent);
  border-radius: 2px;
}

/* "See also" link below the explanation — only appears when the
   primer question has a backing concept brief. Quiet button styled
   to match the editorial register, not a button-y CTA. */
.ppe-seealso {
  margin-top: 12px;
}
.ppe-seealso-link {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  font-family: var(--serif);
  font-size: 14.5px;
  font-style: italic;
  color: var(--accent, var(--ink-mute));
  text-decoration: none;
  cursor: pointer;
}
.ppe-seealso-link:hover {
  text-decoration: underline;
}

/* Inline cross-reference within brief prose: [[brief N]] / [[concept N]]
   markup resolves to the linked concept's title in italic, as an
   editorial "see also" link. Same italic register as the rest of the
   prose so it reads inline; an accent tint plus a dotted underline
   mark it as interactive without screaming. Hover deepens the
   underline to solid. */
.brief-xref,
.brief-xref:link,
.brief-xref:visited {
  color: var(--accent, var(--ink-mute));
  text-decoration: none;
  border-bottom: 1px dotted var(--accent, var(--ink-mute));
  padding-bottom: 1px;
  transition: border-bottom-color 120ms ease, border-bottom-style 120ms ease;
}
.brief-xref em {
  font-style: italic;
  color: inherit;
}
.brief-xref:hover,
.brief-xref:focus-visible {
  border-bottom: 1px solid var(--accent, var(--ink-mute));
  text-decoration: none;
}

/* ── ceiling report ── */
.primer-report-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.primer-report-card {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--d);
  background: var(--paper);
  border-radius: 2px;
  padding: 22px 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.prc-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}
.prc-folio {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}
.prc-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.prc-ceiling {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--accent);
  margin-left: auto;
}
.prc-blurb {
  font-family: var(--serif);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.prc-next-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.prc-next-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 6px;
}
.prc-next-list li a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper-2, var(--paper));
  transition: border-color 120ms ease;
}
.prc-next-list li a:hover {
  border-color: var(--accent);
}
.prc-glyph {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink-soft);
  min-width: 1.4em;
  text-align: center;
}
.prc-title {
  font-family: var(--serif);
  font-size: 14.5px;
  color: var(--ink);
}
.primer-empty {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-faint);
  padding: 22px;
  text-align: center;
  border: 1px dashed var(--rule-soft);
  border-radius: 2px;
}

/* ─── Primer dashboard (v2) ──────────────────────────────────────────
   Tufte-flavored table of small multiples. Every subfield is rendered
   as a dot-matrix tier ladder; each dot is one authored question.
   Dashboard reuses `.primer-host` and the existing `.primer-header`
   styles; everything below is purely additive for the new flow. */

.primer-dash { gap: 28px; }

/* Hero "Practice next" CTA — one big actionable at the top of the dashboard */
.primer-hero-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  background: var(--paper-soft, var(--paper));
  border-radius: 2px;
}
.primer-hero-cta-text {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-width: 0;
}
.primer-hero-cta-count {
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 300;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.primer-hero-cta-label {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.35;
}
.primer-hero-cta-btn { flex: 0 0 auto; }

/* Legend strip — shows the meaning of the three dot states */
.primer-dash-legend {
  display: flex;
  gap: 22px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.primer-dash-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Per-category section: subdued header acts as a link to the category page */
.primer-cat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 3px solid var(--d);
  padding-left: 16px;
}
.primer-cat-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  padding: 4px 0 6px;
  border-bottom: 1px solid var(--rule-soft);
  margin-bottom: 4px;
  transition: color 120ms ease;
}
.primer-cat-head:hover,
.primer-cat-head:focus-visible {
  color: var(--accent);
  outline: none;
}
.primer-cat-folio {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}
.primer-cat-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 300;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.primer-cat-arrow {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
  opacity: 0;
  transition: opacity 120ms ease;
}
.primer-cat-head:hover .primer-cat-arrow,
.primer-cat-head:focus-visible .primer-cat-arrow { opacity: 1; }

/* Subfield row — left label is a button that opens the drill */
.primer-subrow {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: center;
  gap: 18px;
  padding: 5px 0;
}
.primer-subrow-name {
  font-family: var(--serif);
  font-size: 14.5px;
  color: var(--ink-soft);
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
  letter-spacing: -0.003em;
  line-height: 1.3;
  transition: color 120ms ease;
}
.primer-subrow-name:hover,
.primer-subrow-name:focus-visible {
  color: var(--accent);
  outline: none;
}

/* Dot matrix — the Tufte visual. Tier groups separated by ~12px gap;
   individual dots inside a tier hug at 2px. Scales gracefully when
   tiers grow rightward (T4+) or breadth grows (more dots per tier). */
.pdm {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.pdm-tier {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}
.pdm-tier.is-future {
  opacity: 0.35;
}
.pdm-tier.is-active {
  /* subtle "current tier" emphasis — the dots in the active probing
     tier stay full-strength while neighbors quiet down a touch */
}
.pdm-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background: transparent;
  transition: transform 80ms ease;
}
.pdm-dot.solid {
  background: var(--accent);
  border-color: var(--accent);
}
.pdm-dot.stale {
  background: var(--accent-tint, oklch(0.92 0.03 25));
  border-color: var(--accent);
}
.pdm-dot.open {
  background: transparent;
  border-color: var(--ink-faint);
}
.pdm-dot.is-placeholder { opacity: 0.2; }

/* Empty-subfield ghost row carries an italic tag */
.pdm.is-empty {
  opacity: 0.6;
}
.pdm-empty-tag {
  font-family: var(--serif);
  font-style: italic;
  font-size: 12px;
  color: var(--ink-faint);
  margin-left: 8px;
}

/* Large variant on the category page — same shape, more breathing room */
.pdm-lg { gap: 16px; }
.pdm-lg .pdm-tier { gap: 3px; }
.pdm-lg .pdm-dot {
  width: 9px;
  height: 9px;
}

/* ─── Primer category page ──────────────────────────────────────── */

.primer-cat-page .primer-title {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.primer-cat-page-folio {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
}

.primer-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.primer-crumb-link {
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  color: var(--ink-mute);
  cursor: pointer;
  text-transform: inherit;
}
.primer-crumb-link:hover,
.primer-crumb-link:focus-visible {
  color: var(--accent);
  outline: none;
}
.primer-crumb-sep { color: var(--ink-faint); }
.primer-crumb-current { color: var(--ink-soft); }

.primer-cat-subrows {
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.primer-cat-subrow {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--d);
  background: var(--paper);
  border-radius: 2px;
}
.primer-cat-subrow.is-empty { opacity: 0.7; }
.primer-cat-subrow-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.primer-cat-subrow-title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 300;
  color: var(--ink);
}
.primer-cat-drill { flex: 0 0 auto; }
.primer-cat-subrow-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.primer-cat-subrow-meta-ceiling { color: var(--accent); }

.primer-drill-crumb { margin-bottom: 4px; }

/* "All caught up" toast — appears when a picker call returns null
   (subfield warm + tier-gated, or global pool empty). Sits inline on
   the dashboard or category page rather than as a floating overlay,
   so screen readers and keyboard users encounter it in flow. */
.primer-empty-toast {
  font-family: var(--serif);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-soft);
  padding: 12px 16px;
  border: 1px solid var(--rule-soft);
  border-left: 3px solid var(--accent);
  background: var(--paper-soft, var(--paper));
  border-radius: 2px;
  animation: primer-toast-in 200ms ease-out;
}
@keyframes primer-toast-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* mobile */
@media (max-width: 760px) {
  .primer-host {
    margin: 24px auto;
    width: calc(100% - 32px);
    gap: 18px;
  }
  .primer-title { font-size: 32px; }
  .primer-probe-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .primer-probe-q { padding: 20px 18px 22px; }
  .primer-q-stem { font-size: 22px; }
  .primer-q-image img { max-height: 240px; }
  .primer-probe-explain { padding: 18px 16px; min-height: 0; }
  .primer-progress-strip { grid-template-columns: 1fr; }
  .primer-report-card { padding: 18px 18px 20px; }
  .prc-name { font-size: 19px; }
  /* Dashboard: subfield label stacks above the matrix on phones */
  .primer-subrow {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 6px 0;
  }
  .primer-subrow-name { font-size: 14px; }
  .primer-hero-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .primer-hero-cta-btn { width: 100%; }
  .primer-cat-subrow-head { flex-direction: column; align-items: stretch; }
  .primer-cat-drill { width: 100%; }
}

/* ─── Today (focused launchpad, 2026-05-27 revamp) ───────────────────
 * Five elements only — see /home/bcs/.claude/plans/ for rationale.
 * Older Today CSS classes above (.today-grid, .today-head,
 * .today-streak-banner, .today-continue, .today-neglected,
 * .today-suggested, .today-recent-item, .today-records, .today-grid
 * sidebar variants) are unused by the current Today render. Left in
 * place for now; safe to prune in a follow-up. */

.today-mast {
  margin-bottom: 24px;
}

.today-continue-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  background: transparent;
  border: none;
  padding: 0 0 16px 0;
  margin: 0;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-soft);
  cursor: pointer;
  text-align: left;
  text-decoration: none;
}
.today-continue-chip em {
  font-style: italic;
  color: var(--accent);
}
.today-continue-chip:hover {
  color: var(--ink);
}
.today-continue-chip:hover em {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.today-mastery-empty {
  padding: 20px 6px 6px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.45;
}

.today-trails-seeall {
  margin-top: 16px;
  text-align: right;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--accent);
  cursor: pointer;
}
.today-trails-seeall:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* Trails landing — full gallery */
.trails-landing {
  max-width: 1200px;
  margin: 0 auto;
}
.trails-landing-head {
  margin-bottom: 32px;
}
.trails-landing-kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  cursor: pointer;
  margin-bottom: 14px;
  display: inline-block;
}
.trails-landing-kicker:hover {
  color: var(--accent);
}
.trails-landing-title {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 300;
  font-style: italic;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}
.trails-landing-sub {
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  margin: 6px 0 0;
}
.trails-landing-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.today-mast-kicker {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 10px;
}
.today-mast-greeting {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.today-mast-greeting em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.today-mast-meta {
  margin-top: 6px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}
.today-mast-streak {
  color: var(--accent);
  font-style: normal;
}
.today-mast-streak::before {
  content: "● ";
  font-size: 9px;
  vertical-align: middle;
}

.today-mastery {
  margin-bottom: 28px;
}
.today-mastery .head .folio {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
}
.today-mastery-legend-read,
.today-mastery-legend-answered {
  text-transform: uppercase;
}
.today-mastery-legend-read {
  /* hint at the "read" bar color via inline mark — see bar styles below */
  border-bottom: 2px solid var(--accent);
  padding-bottom: 1px;
}
.today-mastery-legend-answered {
  border-bottom: 2px solid var(--ink-mute);
  padding-bottom: 1px;
}
.today-mastery-legend-sep {
  margin: 0 8px;
  color: var(--rule);
}

.today-mastery-list { display: grid; gap: 8px; }
.today-mastery-row-wrap {
  display: contents;
}
.today-mastery-row-wrap.is-open .today-mastery-row {
  background: var(--rule-soft);
}
.today-mastery-row {
  display: grid;
  grid-template-columns: 12px 1fr minmax(140px, 1.2fr) minmax(140px, 1.2fr);
  gap: 14px;
  align-items: center;
  padding: 4px 6px;
  margin: 0 -6px;
  border-radius: 2px;
  transition: background 0.12s ease;
}
.today-mastery-row:hover {
  background: var(--rule-soft);
}
.today-mastery-row:hover .name {
  color: var(--ink);
}
.today-mastery-row .sw {
  width: 10px; height: 10px; background: var(--d);
}
.today-mastery-row .name {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-soft);
}
.today-mastery-pair {
  display: grid;
  grid-template-columns: 1fr 70px;
  gap: 10px;
  align-items: center;
}
.today-mastery-pair .bar {
  height: 4px;
  background: var(--rule-soft);
  position: relative;
}
.today-mastery-pair .bar.bar-read .fill {
  background: var(--accent);
}
.today-mastery-pair .bar.bar-answered .fill {
  background: var(--ink-soft);
}
.today-mastery-pair .bar .fill {
  position: absolute;
  inset: 0 auto 0 0;
}
.today-mastery-pair .n {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-soft);
  text-align: right;
}
.today-mastery-pair .n .den {
  color: var(--ink-faint);
}

.today-mastery-choice {
  display: flex;
  gap: 10px;
  padding: 8px 6px 12px 28px;
  margin: 0 -6px;
  background: var(--rule-soft);
  flex-wrap: wrap;
}
.today-mastery-choice-btn {
  flex: 1 1 auto;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 8px 14px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  border-radius: 2px;
  text-align: left;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.today-mastery-choice-btn:hover {
  background: var(--rule-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.today-cta-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 28px 0;
}
.today-cta-row .btn {
  flex: 0 0 auto;
}

.today-recent-stat {
  font-family: var(--serif);
  font-style: italic;
  font-size: 17px;
  color: var(--ink-soft);
  text-align: center;
  margin: 28px 0;
  padding: 18px 0;
  border-top: 1px solid var(--rule-soft);
  border-bottom: 1px solid var(--rule-soft);
}

.today-trails-section {
  margin-top: 36px;
}

.today-trail-resume {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  margin-bottom: 24px;
  cursor: pointer;
  transition: background 0.12s ease;
  font-family: inherit;
  color: inherit;
}
.today-trail-resume:hover {
  background: var(--rule-soft);
}
.today-trail-resume-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.today-trail-resume-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 4px;
}
.today-trail-resume-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}

.today-trails-preview {
  margin-top: 8px;
}
.today-trails-preview .head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 6px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}
.today-trails-preview .head .title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--ink);
}
.today-trails-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}
.today-trail-card {
  cursor: pointer;
  padding: 14px 16px;
  border: 1px solid var(--rule-soft);
  background: var(--paper);
  border-radius: 3px;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.today-trail-card:hover {
  background: var(--rule-soft);
  border-color: var(--rule);
}
.today-trail-hero {
  width: 100%;
  margin-bottom: 10px;
  border-radius: 2px;
}
.today-trail-domains {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}
.today-trail-domains .sw {
  width: 10px; height: 10px;
  display: inline-block;
  border-radius: 50%;
  background: var(--d);
}
.today-trail-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
  font-weight: 400;
  margin: 0;
  color: var(--ink);
}
.today-trail-blurb {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-soft);
  margin: 6px 0 10px;
}
.today-trail-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}
.today-trail-cta {
  color: var(--accent);
}

@media (max-width: 720px) {
  .today-mastery-row {
    grid-template-columns: 12px 1fr;
    gap: 8px;
    padding-top: 8px;
    padding-bottom: 8px;
  }
  .today-mastery-pair {
    grid-column: 2 / -1;
  }
  .today-cta-row {
    flex-wrap: wrap;
  }
  .today-cta-row .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}