/* ═══════════════════════════════════════════════════
   inff.cc — Authority visual design
   Color palette: #2B2766 / #4D41C2 / #8CBF3F / #BED996
   Hierarchy: lead → sub-stories → card flow
   ═══════════════════════════════════════════════════ */

:root, [data-theme="dark"] {
  --bg: #0d0b1a;
  --bg-card: #161330;
  --bg-hover: #1e1a40;
  --text: #f0f0f5;
  --text-dim: #c8c6d4;
  --text-muted: #a09cb8;
  --accent: #8CBF3F;
  --accent-hover: #BED996;
  --primary: #8078E8;
  --primary-dark: #2B2766;
  --cta: #8CBF3F;
  --cta-hover: #BED996;
  --border: #2B2766;
  --border-dim: #1e1a40;
  --surface-0: #0d0b1a;
  --surface-1: #131025;
  --surface-2: #1a1640;
  --surface-3: #2B2766;
  /* Category colors — dark mode */
  --cat-geopolitics: #8078E8;
  --cat-conflict: #e05555;
  --cat-economy: #8CBF3F;
  --cat-tech: #6aabde;
  --cat-society: #c07acc;
  --cat-health: #3fbfbf;
  --cat-climate: #5fa8a0;
  --cat-disaster: #d4915e;
  --cat-culture: #e0a0c0;
  --cat-sports: #bf8c3f;
  --cat-feature: #e0c060;
  --font-serif: 'GenRyu Serif TC', 'Noto Serif TC', Georgia, serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --max-w: 720px;
  --max-w-wide: 1080px;
  --radius: 4px;
  --radius-lg: 8px;
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #fafbfc;
  --bg-card: #ffffff;
  --bg-hover: #f4f6f0;
  --text: #1a1a2e;
  --text-dim: #3d3b50;
  --text-muted: #6b6880;
  --accent: #3d6b14;
  --accent-hover: #2B2766;
  --primary: #4D41C2;
  --primary-dark: #2B2766;
  --cta: #3d6b14;
  --cta-hover: #2B2766;
  --border: #e4e2ee;
  --border-dim: #f0eef8;
  --surface-0: #fafbfc;
  --surface-1: #ffffff;
  --surface-2: #f5f4fa;
  --surface-3: #eceaf5;
  /* Category colors — light mode */
  --cat-geopolitics: #4D41C2;
  --cat-conflict: #c0392b;
  --cat-economy: #3d6b14;
  --cat-tech: #1a6b8a;
  --cat-society: #8a3a9a;
  --cat-health: #1a7a7a;
  --cat-climate: #2a7a6a;
  --cat-disaster: #a06020;
  --cat-culture: #9a4a6a;
  --cat-sports: #8a6520;
  --cat-feature: #9a7a20;
  color-scheme: light;
}

/* ── Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
  overflow-wrap: anywhere;
}

/* ── Skip link ── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--accent);
  color: var(--bg);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ── Focus visible ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ── Reduced motion ── */
@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;
  }
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-hover); }

/* ── Nav ────────────────────────────────────────── */
.nav {
  background: rgba(43,39,102,0.5);
  border-bottom: 1px solid rgba(255,255,255,0.08);  /* subtle, not accent */
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}
.logo { display: flex; align-items: center; }
.logo img { height: 24px; filter: invert(1); }
.nav-cats {
  display: flex;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.nav-cats a {
  color: rgba(255,255,255,0.75);
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  padding: 6px 14px;
  white-space: nowrap;
  transition: color 0.15s;
  position: relative;
}
.nav-cats a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--accent);
  -webkit-transform: scaleX(0);
  transform: scaleX(0);
  -webkit-transition: -webkit-transform 0.2s;
  transition: transform 0.2s;
}
.nav-cats a:hover, .nav-cats a.active {
  color: #ffffff;
}
.nav-cats a:hover::after, .nav-cats a.active::after {
  -webkit-transform: scaleX(1);
  transform: scaleX(1);
}
.nav-right { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  background: none;
  border: none;
  color: rgba(255,255,255,0.8);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius);
}
.theme-toggle:hover { background: rgba(255,255,255,0.15); color: #fff; }

/* ── Mobile menu ────────────────────────────────── */
.mobile-menu { display: none; }
@media (max-width: 768px) {
  .nav-cats { display: none; }
  .mobile-menu {
    display: flex;
    background: rgba(43,39,102,0.5);
    padding: 8px 16px;
    gap: 4px;
    overflow-x: auto;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .mobile-menu a {
    color: rgba(255,255,255,0.85);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: var(--radius);
    white-space: nowrap;
  }
  .mobile-menu a:hover { background: rgba(255,255,255,0.15); color: #fff; }
}

/* ── Layout ─────────────────────────────────────── */
main {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 48px 24px;  /* was 32px — more breathing room */
}
.layout {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 48px;  /* was 40px */
}
@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; gap: 24px; }
  .sidebar { display: none; }
  main { padding: 24px 16px; }
  .detail header h1 { font-size: 1.6rem; margin-bottom: 36px; }
  .detail .body { margin-top: 24px; }
  .detail .body { font-size: 1.25rem; line-height: 2.1; letter-spacing: 0.03em; }
  .lead-title { font-size: 1.6rem !important; }
  .sub-title { font-size: 1.2rem; }

  .lead-summary { font-size: 1rem; line-height: 1.8; }
  .card-footer, .sub-card .card-footer { font-size: 1rem; }
  .meta, .meta .time, .meta .cat-tag { font-size: 0.95rem; }
  .nav-inner { font-size: 0.95rem; }
  .mobile-menu a { font-size: 1rem; }
  .sub-stories { grid-template-columns: 1fr !important; }
}

/* ── Sidebar ────────────────────────────────────── */
.sidebar h3 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.cat-list { list-style: none; }
.cat-list li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-dim);
  transition: color 0.15s;
}
.cat-list li a:hover { color: var(--accent); }
.badge {
  background: var(--surface-3);
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 10px;
}

/* ━━ LEAD STORY — sits inside content-col ━━━━━━━ */
.lead-story {
  margin-bottom: 36px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s;
}
.lead-story:hover {
  border-color: var(--accent);
}
.lead-story a { display: block; color: inherit; }
.lead-story a:hover { color: inherit; }
.lead-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.lead-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 10px;
  transition: color 0.15s;
}
.lead-story a:hover .lead-title { color: var(--accent); }
.lead-summary {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 12px;
}
.lead-footer {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* ━━ SUB-STORIES — 2-col grid ━━━━━━━━━━━━━━━━━━━ */
.sub-stories {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 48px;  /* gap before card flow */
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.sub-card {
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s, transform 0.15s;
}
.sub-card:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}
.sub-card a { display: block; color: inherit; }
.sub-card a:hover { color: inherit; }
.sub-card .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.sub-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  transition: color 0.15s;
}
.sub-card a:hover .sub-title { color: var(--accent); }
.sub-card .summary {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.sub-card .card-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── Card Grid ──────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;  /* was 24px */
}
@media (max-width: 768px) {
  .card-grid { grid-template-columns: 1fr; gap: 16px; }
  .card .title { font-size: 1.25rem; }
}
.card {
  background: var(--bg-card);    /* float up */
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 20px;                 /* was just border-bottom */
  transition: border-color 0.2s;
}
.card:hover {
  border-color: var(--primary);
}
.card a { display: block; color: inherit; }
.card a:hover .title { color: var(--accent); }
.card .meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.cat-tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--cta);
}
/* Category colors — ordered by hierarchy */
.cat-tag.geopolitics { color: var(--cat-geopolitics); }
.cat-tag.conflict { color: var(--cat-conflict); }
.cat-tag.economy { color: var(--cat-economy); }
.cat-tag.tech { color: var(--cat-tech); }
.cat-tag.society { color: var(--cat-society); }
.cat-tag.health { color: var(--cat-health); }
.cat-tag.climate { color: var(--cat-climate); }
.cat-tag.disaster { color: var(--cat-disaster); }
.cat-tag.culture { color: var(--cat-culture); }
.cat-tag.sports { color: var(--cat-sports); }
.cat-tag.feature { color: var(--cat-feature); font-weight: 700; }

.time {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.card .title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  transition: color 0.15s;
}
.card .summary {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-footer {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* ── Feed heading ───────────────────────────────── */
.feed-heading {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin: 0 0 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
}

/* ── Detail (event page) ────────────────────────── */
.detail { max-width: var(--max-w); }
.detail .back {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.detail .back:hover { color: var(--accent); }
.detail .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.detail header h1 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 36px;
}
.detail .subtitle {
  font-size: 1.05rem;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.detail .body {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 2.1;
  letter-spacing: 0.04em;
  max-width: 38em;
}
.detail .body p {
  margin-bottom: 1.5em;
}
.editor-note {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--surface-2);
  border-left: 3px solid var(--cta);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text-dim);
}
.tags {
  margin: 24px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tags a {
  font-size: 0.8rem;
  color: var(--primary);
  background: var(--surface-2);
  padding: 4px 10px;
  border-radius: 12px;
}
.tags a:hover { background: var(--primary); color: #fff; }

/* ── Sources ────────────────────────────────────── */
.sources {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.sources h2 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.source-group h3 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 12px 0 8px;
}
.source-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-dim);
}
.source-item a {
  font-size: 0.9rem;
  color: var(--text);
}
.source-item a:hover { color: var(--accent); }
.source-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
  display: flex;
  gap: 8px;
}

/* ── Subscribe CTA ──────────────────────────────── */
.subscribe-cta {
  margin: 48px 0 32px;
  padding: 32px;
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--border);
}
.subscribe-cta h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.subscribe-cta p {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 16px;
}
.subscribe-btns {
  display: flex;
  justify-content: center;
  gap: 12px;
}
.subscribe-btns a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  transition: transform 0.1s;
}
.subscribe-btns a:hover { transform: translateY(-1px); color: #fff; }
.btn-tg { background: #0e6fa0; }
.btn-line { background: #047a3c; }

/* ── Pager ───────────────────────────────────────── */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}
.pager-btn {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text);
  transition: all 0.15s;
}
.pager-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.pager-disabled {
  color: var(--text-muted);
  border-color: var(--border-dim);
  cursor: default;
  opacity: 0.4;
}
.pager-disabled:hover { background: none; color: var(--text-muted); border-color: var(--border-dim); }
.pager-nums {
  display: flex;
  align-items: center;
  gap: 4px;
}
.pager-num {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  border-radius: var(--radius);
  color: var(--text-dim);
  transition: all 0.15s;
}
.pager-num:hover { background: var(--surface-3); color: var(--text); }
.pager-num.active {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
}
.pager-dots {
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0 4px;
}
@media (max-width: 768px) {
  .pager-nums { display: none; }
  .pager { gap: 16px; }
}

/* ── Landing ────────────────────────────────────── */
.landing {
  text-align: center;
  padding: 80px 24px;
}
.landing h1 {
  font-size: 4rem;
  font-family: var(--font-serif);
  font-weight: 700;
}
.landing h1 em { color: var(--cta); font-style: normal; }
.landing .tagline {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-top: 12px;
}

/* ── About page ─────────────────────────────────── */
.about-page {
  max-width: var(--max-w);
  margin: 0 auto;
}
.about-page h1 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-bottom: 24px;
}
.about-page section {
  margin-bottom: 32px;
}
.about-page h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--cta);
  margin-bottom: 12px;
}
.about-page p, .about-page li {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-dim);
}
.about-page ul {
  list-style: none;
  padding: 0;
}
.about-page ul li::before {
  content: "—";
  margin-right: 8px;
  color: var(--cta);
}
.about-page .colophon {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ── Footer ─────────────────────────────────────── */
.site-footer {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Daily digest grid ── */
.daily-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}
@media (max-width: 768px) {
  .daily-grid { grid-template-columns: 1fr; }
}
.daily-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s;
}
.daily-card:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}
.daily-card h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  margin: 0 0 8px;
}
.daily-card p {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.5;
}
.page-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.8rem;
  margin-bottom: 8px;
}
.page-desc {
  color: var(--text-dim);
  margin-bottom: 16px;
}
.empty-state {
  color: var(--text-muted);
  text-align: center;
  padding: 60px 0;
}

/* GenRyu SemiBold handles bold properly across browsers */

/* Light mode: thicker body text (GenRyu M weight mapped to 500) */
[data-theme="light"] .detail .body,
[data-theme="light"] .summary,
[data-theme="light"] .lead-summary,
[data-theme="light"] .sub-card .summary {
  font-weight: 500;
}

/* ── Entity tags ── */
.entity-tags {
  margin: 16px 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.entity-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: 4px;
}
.entity-tag {
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.entity-tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.entity-tag.person { border-left: 3px solid #e05555; }
.entity-tag.org { border-left: 3px solid #6aabde; }
.entity-tag.gpe { border-left: 3px solid #8CBF3F; }
.entity-tag.loc { border-left: 3px solid #f0a030; }

/* Mobile summary size — must be at end to override base */
@media (max-width: 768px) {
  .sub-card .summary,
  .card .summary,
  .summary {
    font-size: 1rem !important;
    line-height: 1.8 !important;
    -webkit-line-clamp: 3;
  }
}

@media (max-width: 768px) {
  .entity-tags {
    margin: 24px 0;
    padding: 16px 0;
  }
  .entity-tag {
    font-size: 1rem;
    padding: 8px 14px;
  }
  .entity-label {
    font-size: 1rem;
  }
}

.section-header {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dim);
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Social sidebar */
.social-sidebar {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 100;
}
.social-sidebar a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(43,39,102,0.5);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  transition: background 0.2s, color 0.2s;
  border-radius: 10%;
}
.social-sidebar a:hover {
  background: var(--accent);
  color: var(--bg);
}
@media (max-width: 768px) {
  .social-sidebar a { width: 36px; height: 36px; font-size: 0.9rem; }
  main { padding-right: 38px; }
}

.source-name {
  color: var(--accent);
  font-weight: 700;
  margin-right: 4px;
}

/* ── About page — manifesto style ─────────────── */
.about-page {
  max-width: 640px;
}
.about-page h1 {
  font-size: 2.2rem;
  margin-bottom: 32px;
}
.about-page h2 {
  font-size: 1.1rem;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--accent);
}
.about-page p, .about-page li {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-dim);
}
.about-page ul {
  padding-left: 0;
  list-style: none;
}
.about-page ul li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border-dim);
}
.about-page ul li::before {
  content: "—";
  margin-right: 10px;
  color: var(--accent);
}
.about-page section {
  margin-bottom: 36px;
}
.about-page .colophon {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-style: italic;
}

/* Mermaid diagrams */
.mermaid { margin: 2rem 0; overflow-x: auto; cursor: pointer; position: relative; }
.mermaid svg { min-width: 100%; height: auto; min-height: 400px; }
.mermaid::after { content: '點擊放大'; position: absolute; top: 0.5rem; right: 0.5rem; font-size: 0.75rem; opacity: 0.5; }
.mermaid.expanded { position: fixed; inset: 0; z-index: 9999; background: var(--bg, #fff); padding: 2rem; overflow: auto; cursor: zoom-out; }
.mermaid.expanded::after { content: '點擊關閉'; }
.mermaid.expanded svg { min-height: 80vh; }