/* ============================================================
   Awesome Paper Research Skills — design system
   White and purple theme with a shared system-font stack.
   Tokens → light/dark · components → layout → responsive
   ============================================================ */

:root {
  /* palette — white / purple (light, default) */
  --ars-bg: #ffffff;
  --ars-bg-tint: #f7f5ff;
  --ars-ink: #1f1f26;
  --ars-ink-soft: #444052;
  --ars-muted: #625d73;
  --ars-faint: #817b91;
  --ars-rule: #e7e3ef;
  --ars-rule-soft: #f0ecf8;
  --ars-panel: #ffffff;
  --ars-panel-2: #faf9ff;
  --ars-teal: #691eff;
  --ars-teal-soft: #f0e9ff;
  --ars-teal-deep: #5416d0;
  --ars-ember: #a63dc4;
  --ars-ember-soft: #f5f0ff;
  --ars-gold: #44309a;
  --ars-shadow-1: 0 2px 10px rgba(49, 27, 92, 0.05);
  --ars-shadow-2: 0 14px 40px rgba(49, 27, 92, 0.08);
  --ars-shadow-hover: 0 20px 50px rgba(49, 27, 92, 0.12);
  --ars-focus: rgba(105, 30, 255, 0.18);
  --ars-fav: #691eff;

  /* scale */
  --ars-space-1: 4px;
  --ars-space-2: 8px;
  --ars-space-3: 12px;
  --ars-space-4: 16px;
  --ars-space-5: 20px;
  --ars-space-6: 24px;
  --ars-space-7: 32px;
  --ars-space-8: 44px;
  --ars-radius: 8px;
  --ars-radius-sm: 5px;
  --ars-radius-lg: 12px;
  --ars-maxw: 1180px;

  /* typography — one system-font stack across all components */
  --ars-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --ars-serif: var(--ars-font);
  --ars-mono: var(--ars-font);
}

[data-theme="dark"] {
  --ars-bg: #14111c;
  --ars-bg-tint: #1a1525;
  --ars-ink: #f1edf8;
  --ars-ink-soft: #d7cfe7;
  --ars-muted: #b3a8c6;
  --ars-faint: #9385a7;
  --ars-rule: #352b46;
  --ars-rule-soft: #251e32;
  --ars-panel: #1e182a;
  --ars-panel-2: #191421;
  --ars-teal: #b593ff;
  --ars-teal-soft: #2d1d4e;
  --ars-teal-deep: #d4bfff;
  --ars-ember: #e3a1ff;
  --ars-ember-soft: #302044;
  --ars-gold: #d4bfff;
  --ars-shadow-1: 0 2px 12px rgba(0, 0, 0, 0.30);
  --ars-shadow-2: 0 14px 40px rgba(0, 0, 0, 0.40);
  --ars-shadow-hover: 0 24px 55px rgba(0, 0, 0, 0.50);
  --ars-focus: rgba(181, 147, 255, 0.25);
  --ars-fav: #c9aaff;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ars-ink);
  background: var(--ars-bg);
  font-family: var(--ars-font);
  font-feature-settings: "tnum" 1, "cv05" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.25s ease, color 0.25s ease;
}

button, input, select, textarea, code, pre, kbd, samp { font-family: var(--ars-font); }

a { color: inherit; }

::selection { background: var(--ars-ember); color: #fff; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 12px; top: -60px;
  background: var(--ars-ink); color: var(--ars-bg);
  padding: 8px 14px; border-radius: var(--ars-radius-sm);
  z-index: 200; transition: top 0.2s;
  font-family: var(--ars-mono); font-size: 12px;
}
.skip-link:focus { top: 12px; }

/* ---------- header / nav ---------- */
.site-header {
  background: linear-gradient(120deg, var(--ars-bg-tint) 0%, var(--ars-bg) 90%);
  border-bottom: 1px solid var(--ars-rule);
}

.nav, .hero, .stat-strip, main, .footer {
  width: min(var(--ars-maxw), calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex; align-items: baseline; gap: 10px;
  text-decoration: none; font-weight: 700;
}
.brand-mark {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  border-radius: var(--ars-radius-sm);
  color: var(--ars-bg);
  background: var(--ars-teal);
  font-family: var(--ars-mono); font-size: 12px; font-weight: 700;
  letter-spacing: 0.02em;
}
.brand-text {
  font-family: var(--ars-serif);
  font-size: 19px; font-weight: 600;
  font-style: normal;
  color: var(--ars-ink);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

/* segmented control */
.seg {
  display: inline-flex;
  border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius-sm);
  overflow: hidden;
  background: var(--ars-panel);
}
.seg button {
  border: 0; background: transparent;
  color: var(--ars-muted);
  min-height: 36px; padding: 0 12px;
  font-family: var(--ars-mono); font-size: 12px; font-weight: 600;
  cursor: pointer; transition: background 0.15s, color 0.15s;
}
.seg button + button { border-left: 1px solid var(--ars-rule); }
.seg button.active { background: var(--ars-teal); color: var(--ars-bg); }

.icon-button, .lang-button, .github-link, .data-link, .fav-toggle {
  border: 1px solid var(--ars-rule);
  background: var(--ars-panel);
  color: var(--ars-ink);
  min-height: 36px;
  border-radius: var(--ars-radius-sm);
  padding: 0 12px;
  text-decoration: none;
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  cursor: pointer;
  font-family: var(--ars-mono); font-size: 12px; font-weight: 600;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.icon-button { min-width: 36px; padding: 0; font-size: 15px; }
.icon-button:hover, .lang-button:hover, .github-link:hover,
.data-link:hover, .fav-toggle:hover {
  transform: translateY(-1px);
  box-shadow: var(--ars-shadow-1);
  border-color: var(--ars-teal);
}
.lang-button.active {
  background: var(--ars-teal); color: var(--ars-bg); border-color: var(--ars-teal);
}
[data-theme="dark"] .lang-button.active { background: var(--ars-teal); color: #14111c; border-color: var(--ars-teal); }

.fav-toggle[aria-pressed="true"] {
  background: var(--ars-fav); color: var(--ars-bg); border-color: var(--ars-fav);
}
.fav-count {
  display: inline-grid; place-items: center;
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; font-size: 11px; font-weight: 700;
  background: var(--ars-rule-soft); color: var(--ars-ink);
}
.fav-toggle[aria-pressed="true"] .fav-count { background: rgba(0,0,0,0.18); color: inherit; }

/* ---------- hero — journal masthead ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  align-items: center;
  padding: 28px 0 24px;
}

.masthead-eyebrow {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--ars-mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ars-muted);
  margin-bottom: 12px;
}
.masthead-eyebrow .vol { color: var(--ars-ember); font-weight: 700; }
.masthead-eyebrow .sep { color: var(--ars-faint); }

.hero h1 {
  margin: 0;
  font-family: var(--ars-serif);
  font-size: clamp(30px, 3.5vw, 46px);
  line-height: 1.2; letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--ars-ink);
}
.hero h1 em {
  font-style: normal; font-weight: 500;
  color: var(--ars-teal);
  white-space: nowrap;
}
.hero p {
  margin: 12px 0 0; max-width: 640px;
  color: var(--ars-ink-soft); font-size: 15px; line-height: 1.7;
}
.hero .hero-hint {
  margin-top: 12px; color: var(--ars-muted); font-size: 11px;
  font-family: var(--ars-mono);
}
.hero-hint b { color: var(--ars-ember); font-weight: 700; }

.hero-search { margin-top: 20px; }
.hero-search input { min-height: 48px; font-size: 15px; }
.task-navigation { margin-top: 16px; }
.task-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.task-heading h2 { margin: 0; font-size: 13px; font-weight: 600; color: var(--ars-ink-soft); }
.task-all { border: 0; padding: 5px 0; background: transparent; color: var(--ars-muted); font-size: 12px; cursor: pointer; }
.task-all.active { color: var(--ars-teal); font-weight: 600; }
.task-list { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; }
.task-button {
  min-height: 44px; padding: 8px 10px; border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius-sm); background: var(--ars-panel);
  color: var(--ars-ink-soft); font-size: 13px; cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}
.task-button:hover { border-color: var(--ars-teal); color: var(--ars-teal); }
.task-button.active { background: var(--ars-teal); border-color: var(--ars-teal); color: var(--ars-bg); }

/* "In this issue" panel — a table-of-contents */
.hero-panel {
  background: var(--ars-panel);
  border: 1px solid var(--ars-rule);
  box-shadow: var(--ars-shadow-2);
  border-radius: var(--ars-radius);
  padding: 16px;
}
.hero-panel .toc-title {
  font-family: var(--ars-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ars-ember); font-weight: 700;
  margin-bottom: 8px;
}
.toc-list { display: grid; gap: 2px; }
.toc-row {
  display: flex; align-items: baseline; gap: 8px;
  font-family: var(--ars-serif); font-size: 13px;
  padding: 4px 0;
  border-bottom: 1px dotted var(--ars-rule);
}
.toc-row:last-child { border-bottom: 0; }
.toc-row .num {
  font-family: var(--ars-mono); font-size: 11px;
  color: var(--ars-faint); font-weight: 600;
  min-width: 22px;
}
.toc-row .name { color: var(--ars-ink); flex: 1; }
.toc-row .leader {
  flex: 1; border-bottom: 1px dotted var(--ars-rule);
  margin: 0 4px; transform: translateY(-3px);
}
.toc-row .count {
  font-family: var(--ars-mono); font-size: 13px;
  color: var(--ars-ink-soft); font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.toc-foot {
  margin-top: 10px; padding-top: 10px;
  border-top: 1px solid var(--ars-rule);
  display: flex; justify-content: space-between; gap: 12px;
  font-family: var(--ars-mono); font-size: 11px;
  color: var(--ars-muted);
}
.toc-foot b { color: var(--ars-ink); font-weight: 700; }

/* ---------- stat strip ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding-bottom: 20px;
}
.stat-strip .stat-card:last-child { display: none; }
.stat-card {
  background: var(--ars-panel);
  border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius-sm);
  padding: 12px 16px;
  box-shadow: var(--ars-shadow-1);
}
.stat-card .sv {
  font-family: var(--ars-mono); font-size: 22px; font-weight: 700;
  font-variant-numeric: tabular-nums; color: var(--ars-ink);
}
.stat-card .sv small { font-size: 12px; color: var(--ars-muted); font-weight: 500; }
.stat-card .sl {
  color: var(--ars-muted); font-size: 11px; margin-top: 3px;
  font-family: var(--ars-mono); letter-spacing: 0.04em;
  text-transform: uppercase;
}
.cat-bar { display: grid; gap: 4px; }
.cat-bar-row { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--ars-muted); }
.cat-bar-track { flex: 1; height: 4px; border-radius: 2px; background: var(--ars-rule-soft); overflow: hidden; }
.cat-bar-fill { height: 100%; border-radius: 2px; background: var(--ars-teal); }
.cat-bar-row b { color: var(--ars-ink); font-weight: 700; font-family: var(--ars-mono); }

/* ---------- controls ---------- */
.controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(140px, 1fr)) auto auto;
  gap: 10px;
  margin-bottom: 18px;
  align-items: end;
}
.search-field, .select-field {
  display: grid; gap: 5px;
  color: var(--ars-muted);
  font-family: var(--ars-mono); font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
}
input, select {
  width: 100%; min-height: 40px;
  border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius-sm);
  background: var(--ars-panel);
  color: var(--ars-ink);
  padding: 0 12px; outline: none;
  font-family: var(--ars-font); font-size: 14px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, button:focus-visible, a:focus-visible {
  outline: 3px solid var(--ars-focus);
  outline-offset: 2px;
}
input:focus, select:focus { border-color: var(--ars-teal); }

/* ---------- table — bibliography entries ---------- */
.table-section, .method-section {
  background: var(--ars-panel);
  border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius);
  box-shadow: var(--ars-shadow-1);
}
.table-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px; padding: 22px 24px 18px; border-bottom: 1px solid var(--ars-rule);
}
.table-header h2 {
  margin: 0; font-family: var(--ars-serif); font-size: 26px; font-weight: 600;
}
.table-header p, .method-section p {
  margin: 8px 0 0; color: var(--ars-muted); line-height: 1.7; font-size: 14px;
}
.table-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.table-wrap { padding: 0 8px; overflow-x: auto; }
table {
  width: 100%; min-width: 1080px; border-collapse: collapse;
}
th, td { padding: 13px 14px; border-bottom: 1px solid var(--ars-rule-soft); text-align: left; vertical-align: top; }
th {
  color: var(--ars-muted); background: var(--ars-panel-2);
  font-family: var(--ars-mono); font-size: 10px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  position: sticky; top: 0; z-index: 2;
}
td { font-size: 14px; line-height: 1.45; }

tbody tr { cursor: pointer; transition: background 0.12s; }
tbody tr:hover, tbody tr:focus-within { background: var(--ars-panel-2); }
.rank-cell {
  font-family: var(--ars-mono); font-weight: 700; color: var(--ars-faint);
  font-variant-numeric: tabular-nums; font-size: 13px;
}
tbody tr:nth-child(-n+3) .rank-cell { color: var(--ars-ember); }
.repo-cell a {
  font-family: var(--ars-serif); font-size: 15px; font-weight: 600;
  text-decoration: none; color: var(--ars-ink);
}
.repo-cell a:hover { color: var(--ars-teal); }
.repo-meta {
  display: block; color: var(--ars-faint); margin-top: 4px;
  font-family: var(--ars-mono); font-size: 11px;
}
.stars {
  font-family: var(--ars-mono); font-weight: 700; white-space: nowrap;
  font-variant-numeric: tabular-nums; color: var(--ars-ink);
}
.delta-chip {
  display: inline-block; margin-left: 4px; font-size: 11px;
  color: var(--ars-ember); font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.spark-cell { width: 110px; min-width: 90px; }
.spark-cell svg { display: block; width: 100%; height: 28px; }

/* proofreader's mark for trend — the signature element */
.trend-mark {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ars-mono); font-size: 12px; font-weight: 600;
  white-space: nowrap;
}
.trend-mark .glyph {
  display: inline-grid; place-items: center;
  width: 20px; height: 20px;
  font-family: var(--ars-serif); font-size: 18px; font-weight: 700;
  line-height: 1;
}
.trend-mark.hot .glyph { color: var(--ars-ember); }
.trend-mark.hot .label { color: var(--ars-ember); }
.trend-mark.rising .glyph { color: var(--ars-teal); }
.trend-mark.rising .label { color: var(--ars-teal); }
.trend-mark.steady .glyph { color: var(--ars-faint); }
.trend-mark.steady .label { color: var(--ars-muted); }

.category-pill {
  display: inline-flex; align-items: center;
  min-height: 24px; border-radius: 4px;
  padding: 0 8px;
  font-family: var(--ars-serif); font-style: normal;
  font-size: 12px; font-weight: 500; white-space: nowrap;
  color: var(--ars-teal-deep);
  background: var(--ars-teal-soft);
}
[data-theme="dark"] .category-pill { color: var(--ars-teal); }
.description-cell { max-width: 340px; color: var(--ars-ink-soft); font-size: 13px; }

.fav-star {
  appearance: none; border: 0; background: transparent;
  color: var(--ars-rule); font-size: 17px; cursor: pointer;
  transition: transform 0.15s, color 0.15s; padding: 2px 4px;
}
.fav-star:hover { transform: scale(1.2); }
.fav-star.on { color: var(--ars-fav); }

/* ---------- card view ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 14px;
  padding: 16px 8px;
}
.repo-card {
  background: var(--ars-panel);
  border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius);
  padding: 18px;
  box-shadow: var(--ars-shadow-1);
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
  display: flex; flex-direction: column; gap: 12px;
  animation: fade-up 0.35s ease both;
}
.repo-card:hover { transform: translateY(-3px); box-shadow: var(--ars-shadow-hover); border-color: var(--ars-teal); }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.card-rank {
  display: inline-grid; place-items: center;
  min-width: 30px; height: 30px; padding: 0 8px;
  border-radius: 5px;
  font-family: var(--ars-mono); font-weight: 700; font-size: 13px;
  color: var(--ars-bg);
  background: var(--ars-ink);
  font-variant-numeric: tabular-nums;
}
.card-rank.gold { background: var(--ars-ember); }
.card-name {
  font-family: var(--ars-serif); font-weight: 600; font-size: 16px;
  text-decoration: none; word-break: break-word; color: var(--ars-ink);
  line-height: 1.3;
}
.card-name:hover { color: var(--ars-teal); }
.card-stars {
  font-family: var(--ars-mono); font-size: 22px; font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.card-stars small { font-size: 12px; color: var(--ars-muted); font-weight: 500; }
.card-pills { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.card-desc { color: var(--ars-ink-soft); font-size: 13px; line-height: 1.55; flex: 1; }
.card-spark { width: 100%; height: 32px; }
.card-meta {
  display: flex; justify-content: space-between; gap: 8px;
  color: var(--ars-faint); font-size: 11px;
  font-family: var(--ars-mono);
  border-top: 1px dotted var(--ars-rule); padding-top: 10px;
}

.empty-state {
  padding: 40px 24px; color: var(--ars-muted); text-align: center;
  font-family: var(--ars-serif); font-style: normal; font-size: 16px;
}

/* ---------- method ---------- */
.method-section {
  margin-top: 22px; padding: 26px 24px;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 1fr);
  gap: 28px;
}
.method-section h2 { font-family: var(--ars-serif); font-weight: 600; }
.method-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.method-grid div {
  border: 1px solid var(--ars-rule); border-radius: var(--ars-radius-sm); padding: 16px;
}
.method-grid strong {
  display: block; font-family: var(--ars-serif); font-size: 16px;
  font-style: normal; color: var(--ars-teal);
}
.method-grid span { display: block; margin-top: 8px; color: var(--ars-muted); font-size: 13px; line-height: 1.5; }

/* ---------- drawer ---------- */
.drawer {
  position: fixed; inset: 0; z-index: 120;
  display: flex; justify-content: flex-end;
  visibility: hidden;
}
.drawer.open { visibility: visible; }
.drawer-scrim {
  position: absolute; inset: 0; z-index: 1;
  background: rgba(10, 16, 26, 0.55);
  opacity: 0; transition: opacity 0.25s ease;
  backdrop-filter: blur(2px);
}
.drawer.open .drawer-scrim { opacity: 1; }
.drawer-inner {
  position: relative; z-index: 2;
  width: min(480px, 100%);
  height: 100%;
  background: var(--ars-panel);
  border-left: 1px solid var(--ars-rule);
  box-shadow: var(--ars-shadow-2);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
  overflow: hidden;
}
.drawer.open .drawer-inner { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; padding: 22px 24px 18px; border-bottom: 1px solid var(--ars-rule);
}
.drawer-head .eyebrow {
  font-family: var(--ars-mono); font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ars-ember); font-weight: 700; margin-bottom: 6px;
}
.drawer-head h3 {
  margin: 0; font-family: var(--ars-serif); font-size: 22px;
  line-height: 1.3; word-break: break-word; font-weight: 600; color: var(--ars-ink);
}
.drawer-body { padding: 22px 24px; overflow-y: auto; flex: 1; }
.drawer-foot {
  padding: 14px 24px; border-top: 1px solid var(--ars-rule);
  display: flex; gap: 8px; flex-wrap: wrap;
}
.drawer-field { margin-bottom: 18px; }
.drawer-field .lbl {
  color: var(--ars-ember); font-size: 10px;
  font-family: var(--ars-mono); font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 6px;
}
.drawer-field .val {
  color: var(--ars-ink); font-size: 14px; line-height: 1.65; word-break: break-word;
}
.drawer-field .val.serif { font-family: var(--ars-serif); font-size: 15px; }
.drawer-topics { display: flex; flex-wrap: wrap; gap: 5px; }
.topic-chip {
  font-family: var(--ars-mono); font-size: 11px;
  padding: 3px 8px; border-radius: 4px;
  background: var(--ars-panel-2); border: 1px solid var(--ars-rule);
  color: var(--ars-ink-soft);
}
.sig-list { display: flex; flex-wrap: wrap; gap: 4px; }
.sig-tag {
  font-family: var(--ars-mono); font-size: 10px;
  padding: 2px 7px; border-radius: 3px;
  background: var(--ars-rule-soft); color: var(--ars-muted);
}
.agent-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.agent-chip {
  font-family: var(--ars-mono); font-size: 11px; font-weight: 600;
  padding: 3px 8px; border-radius: 4px;
  color: var(--ars-teal-deep); background: var(--ars-teal-soft);
  border: 1px solid var(--ars-teal-soft);
}
[data-theme="dark"] .agent-chip { color: var(--ars-teal); }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 18px; }
.stat-row .sb {
  background: var(--ars-panel-2); border: 1px solid var(--ars-rule-soft);
  border-radius: var(--ars-radius-sm); padding: 12px 10px; text-align: center;
}
.stat-row .sb .n {
  font-family: var(--ars-mono); font-size: 18px; font-weight: 700;
  font-variant-numeric: tabular-nums; color: var(--ars-ink);
}
.stat-row .sb .k {
  font-family: var(--ars-mono); font-size: 10px; color: var(--ars-muted);
  letter-spacing: 0.06em; text-transform: uppercase; margin-top: 3px;
}
.drawer-divider {
  border: 0; border-top: 1px dotted var(--ars-rule);
  margin: 18px 0;
}

/* ---------- footer ---------- */
.footer {
  display: flex; justify-content: space-between; gap: 20px;
  padding: 28px 0 40px; color: var(--ars-muted); font-size: 12px;
  font-family: var(--ars-mono);
  border-top: 1px solid var(--ars-rule); margin-top: 24px;
}

/* ---------- toast (for copy-markdown feedback) ---------- */
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(20px);
  background: var(--ars-ink); color: var(--ars-bg);
  padding: 12px 20px; border-radius: var(--ars-radius-sm);
  font-family: var(--ars-mono); font-size: 13px; font-weight: 600;
  box-shadow: var(--ars-shadow-2); z-index: 300;
  opacity: 0; transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- quality badges (skills count / citation check / stale) ---------- */
.repo-badges { display: inline-flex; gap: 6px; flex-wrap: wrap; margin-left: 8px; vertical-align: middle; }
.mini-badge {
  display: inline-block; padding: 1px 7px; border-radius: 999px;
  font-family: var(--ars-font); font-size: 11px; font-weight: 600; line-height: 1.6;
  border: 1px solid var(--ars-rule);
}
.mini-badge.skills { color: var(--ars-muted); background: var(--ars-panel-2); }
.mini-badge.cite { color: var(--ars-teal-deep); background: var(--ars-teal-soft); border-color: transparent; }
.mini-badge.stale { color: var(--ars-ember); background: var(--ars-ember-soft); border-color: transparent; }

/* ---------- row / card action buttons ---------- */
.row-actions { white-space: nowrap; }
.row-actions .fav-star, .card-actions .fav-star { margin-right: 6px; }
.cmp-btn {
  background: none; border: 1px solid var(--ars-rule); border-radius: var(--ars-radius-sm);
  color: var(--ars-faint); cursor: pointer; font-size: 13px; line-height: 1;
  padding: 4px 7px; transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.cmp-btn:hover { color: var(--ars-teal); border-color: var(--ars-teal); }
.cmp-btn.on { color: var(--ars-panel); background: var(--ars-teal); border-color: var(--ars-teal); }
.card-actions { display: inline-flex; align-items: center; gap: 6px; }

/* ---------- compare tray ---------- */
.compare-tray {
  position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  background: var(--ars-panel); border: 1px solid var(--ars-rule);
  border-radius: 999px; box-shadow: var(--ars-shadow-2);
  padding: 8px 16px; z-index: 260; max-width: min(92vw, 720px);
}
.compare-tray .ct-label { font-weight: 700; font-size: 13px; color: var(--ars-teal-deep); }
.compare-tray .ct-chips {
  font-family: var(--ars-mono); font-size: 12px; color: var(--ars-ink-soft);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.compare-tray .ct-actions { display: inline-flex; gap: 4px; }
.compare-tray .data-link { cursor: pointer; }

/* ---------- compare modal ---------- */
.modal { position: fixed; inset: 0; z-index: 320; }
.modal-scrim { position: absolute; inset: 0; background: rgba(10, 14, 20, 0.55); opacity: 0; transition: opacity 0.2s; }
.modal-inner {
  position: relative; margin: 6vh auto 0; width: min(92vw, 720px);
  background: var(--ars-panel); border: 1px solid var(--ars-rule);
  border-radius: var(--ars-radius-lg); box-shadow: var(--ars-shadow-2);
  padding: 22px 24px 26px; opacity: 0; transform: translateY(10px);
  transition: opacity 0.2s, transform 0.2s;
}
.modal.open .modal-scrim { opacity: 1; }
.modal.open .modal-inner { opacity: 1; transform: translateY(0); }
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.modal-head h3 { margin: 0; font-family: var(--ars-serif); font-size: 24px; color: var(--ars-ink); }
.modal-hint { color: var(--ars-muted); font-size: 13px; margin: 6px 0 14px; }
.cmp-legend-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; }
.cmp-legend { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ars-ink-soft); }
.cmp-legend i { width: 14px; height: 3px; border-radius: 2px; display: inline-block; }

/* ---------- animations ---------- */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 1040px) {
  .controls { grid-template-columns: 1fr 1fr 1fr; }
  .seg-view, .fav-toggle { grid-column: span 1; }
  .task-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 16px; padding: 24px 0 20px; }
  .hero-panel { padding: 12px 16px; box-shadow: none; }
  .hero-panel .toc-title, .hero-panel .toc-list { display: none; }
  .toc-foot { margin: 0; padding: 0; border: 0; }
}
@media (max-width: 760px) {
  .method-section { grid-template-columns: 1fr; }
  .controls { grid-template-columns: 1fr 1fr; }
  .method-grid { grid-template-columns: 1fr; }
  .table-header, .footer { align-items: flex-start; flex-direction: column; }
  .drawer-inner { width: 100%; }
}
@media (max-width: 560px) {
  .nav { align-items: flex-start; flex-direction: column; padding: 12px 0; gap: 10px; }
  .brand-text { font-size: 16px; }
  .hero h1 { font-size: 30px; }
  .hero .hero-hint { display: none; }
  .hero-search input { font-size: 16px; }
  .stat-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; padding-bottom: 16px; }
  .stat-strip .stat-card:nth-child(4) { display: none; }
  .stat-strip .stat-card { padding: 10px; }
  .stat-card .sv { font-size: 18px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .controls .fav-toggle { justify-self: start; }
}