/* =========================================================================
   Editorial theme — serif display + sans body, light & dark.
   Tokens follow the MD3 custom-property convention; values are custom.
   ========================================================================= */

:root, [data-theme="light"] {
  --primary: #20303f;            --on-primary: #ffffff;
  --primary-container: #e4e9ee;  --on-primary-container: #16222d;
  --secondary: #a07c2c;          --on-secondary: #ffffff;
  --secondary-container: #f2e8d2;--on-secondary-container: #574410;
  --background: #faf7f1;         --on-background: #211f1a;
  --surface: #faf7f1;            --surface-container: #f3efe6;
  --surface-container-high: #ece7db;
  --on-surface: #211f1a;         --on-surface-variant: #5c574c;
  --outline: #8d8778;            --outline-variant: #ddd6c8;
  --error: #a33b2e;
  --ok: #2e6b46;   --ok-bg: #e3efe7;
  --warn: #8a6116; --warn-bg: #f4ead3;
  --bad: #a33b2e;  --bad-bg: #f5e2de;
  --radius: 10px;  --radius-lg: 18px;
  --elev-1: 0 1px 2px rgba(32, 42, 52, .08), 0 1px 3px 1px rgba(32, 42, 52, .05);
  --elev-2: 0 3px 8px rgba(32, 42, 52, .12), 0 1px 3px rgba(32, 42, 52, .08);
  --font-display: "Fraunces", "Noto Serif TC", serif;
  --font-body: "Inter", "Noto Sans TC", system-ui, sans-serif;
}
[data-theme="dark"] {
  --primary: #c8b476;            --on-primary: #241b05;
  --primary-container: #2a3644;  --on-primary-container: #dfe6ec;
  --secondary: #c8b476;          --on-secondary: #241b05;
  --secondary-container: #3a2f12; --on-secondary-container: #ecdfc0;
  --background: #14181e;         --on-background: #e4e1d8;
  --surface: #14181e;            --surface-container: #1c2129;
  --surface-container-high: #242a33;
  --on-surface: #e4e1d8;         --on-surface-variant: #a8a294;
  --outline: #6d675a;            --outline-variant: #333a44;
  --error: #d98577;
  --ok: #7cc39a;   --ok-bg: #1d3327;
  --warn: #d9b96a; --warn-bg: #372c12;
  --bad: #d98577;  --bad-bg: #3b1f1a;
  --elev-1: 0 1px 2px rgba(0, 0, 0, .4);
  --elev-2: 0 3px 10px rgba(0, 0, 0, .5);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--on-background);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.25; }
a { color: var(--primary); }
img { max-width: 100%; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--primary); color: var(--on-primary);
  padding: 8px 16px; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ---------- app bar ---------- */
.appbar {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--background) 82%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--outline-variant);
}
.appbar__inner {
  max-width: 1060px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--on-surface); }
.brand__logo {
  width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--primary); color: var(--on-primary); border-radius: 50%;
  font-size: 18px;
}
.brand__logo--text {
  font-family: var(--font-display); font-size: .82rem; font-weight: 600;
  letter-spacing: .04em;
}
.brand__name { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; letter-spacing: .01em; }
.appbar__actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--outline-variant); border-radius: 999px;
  background: transparent; color: var(--on-surface);
  padding: 6px 12px; font: inherit; font-size: .85rem; cursor: pointer;
  text-decoration: none;
}
.icon-btn:hover { background: var(--surface-container); }
.icon-btn .material-symbols-rounded { font-size: 19px; }
.icon-btn__txt { font-weight: 600; }

.gh-star {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--outline-variant); border-radius: 999px;
  padding: 6px 12px; font-size: .85rem; font-weight: 600;
  color: var(--on-surface); text-decoration: none;
}
.gh-star:hover { background: var(--surface-container); }
.gh-star .material-symbols-rounded { font-size: 18px; color: var(--secondary); }
.gh-star__count { color: var(--on-surface-variant); font-weight: 500; }

/* ---------- cross-page nav ---------- */
.pagenav {
  position: sticky; top: 55px; z-index: 39;
  background: color-mix(in srgb, var(--background) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--outline-variant);
}
.pagenav__inner {
  max-width: 1060px; margin: 0 auto; padding: 8px 20px;
  display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none;
}
.pagenav__inner::-webkit-scrollbar { display: none; }
.navpill {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  padding: 6px 14px; border-radius: 999px; text-decoration: none;
  font-size: .85rem; font-weight: 500; color: var(--on-surface-variant);
  border: 1px solid transparent;
}
.navpill .material-symbols-rounded { font-size: 17px; }
.navpill:hover { background: var(--surface-container); }
.navpill--active {
  color: var(--on-primary); background: var(--primary);
  border-color: var(--primary);
}

/* ---------- page scaffold ---------- */
.page { max-width: 1060px; margin: 0 auto; padding: 40px 20px 72px; }
.page-head { margin-bottom: 26px; }
.page-head h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.9rem); margin: 0 0 10px;
  letter-spacing: -.01em;
}
.page-head__sub {
  margin: 0; max-width: 62ch;
  color: var(--on-surface-variant); font-size: 1.02rem;
}
.page-intro, .page-outro { max-width: 70ch; }
.page-outro { margin-top: 28px; }
.prose-para { color: var(--on-surface); }
.empty { color: var(--on-surface-variant); }

/* ---------- status badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 999px;
  font-size: .74rem; font-weight: 600; letter-spacing: .02em;
  white-space: nowrap;
}
.badge .material-symbols-rounded { font-size: 15px; }
.badge--verified { color: var(--ok); background: var(--ok-bg); }
.badge--partial { color: var(--warn); background: var(--warn-bg); }
.badge--claimed { color: var(--bad); background: var(--bad-bg); }

/* ---------- fact list (3-col editorial rows) ---------- */
.factsec { margin: 34px 0; }
.factsec__heading {
  font-size: .82rem; font-family: var(--font-body); font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em;
  color: var(--secondary); margin: 0 0 10px;
}
.factlist { border-top: 1px solid var(--outline-variant); }
.fact {
  display: grid; grid-template-columns: 200px 1fr auto;
  gap: 8px 20px; align-items: start;
  padding: 14px 0; border-bottom: 1px solid var(--outline-variant);
}
.fact__head { display: flex; align-items: center; gap: 8px; }
.fact__icon { font-size: 19px; color: var(--secondary); }
.fact__label { font-weight: 600; font-size: .92rem; }
.fact__main { display: flex; flex-direction: column; gap: 3px; }
.fact__value { font-size: .95rem; }
.fact__note { font-size: .85rem; color: var(--on-surface-variant); }
.fact__status { justify-self: end; }
.factlist--dialog .fact { grid-template-columns: 1fr auto; }

/* ---------- hub hero ---------- */
.hero__stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px; margin: 10px 0 34px;
}
.hero__stat {
  background: var(--surface-container); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg); padding: 18px 20px;
}
.hero__stat-value {
  display: block; font-family: var(--font-display);
  font-size: 1.9rem; font-weight: 600; color: var(--primary);
}
[data-theme="dark"] .hero__stat-value { color: var(--secondary); }
.hero__stat-label { font-size: .82rem; color: var(--on-surface-variant); }

/* ---------- cards (hub entry links) ---------- */
.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.card {
  background: var(--surface-container); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg); padding: 20px;
  text-decoration: none; color: var(--on-surface);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
  cursor: pointer;
}
.card:hover, .card:focus-visible {
  border-color: var(--secondary); box-shadow: var(--elev-2);
  transform: translateY(-2px);
}
.card__icon { font-size: 26px; color: var(--secondary); }
.card__title { margin: 8px 0 4px; font-size: 1.15rem; }
.card__summary { margin: 0; font-size: .88rem; color: var(--on-surface-variant); }

/* ---------- people rows ---------- */
.peoplegroup { margin: 34px 0; }
.peoplelist { border-top: 1px solid var(--outline-variant); }
.person {
  display: grid; grid-template-columns: 56px 1fr auto;
  gap: 4px 18px; align-items: center;
  padding: 18px 4px; border: none; border-bottom: 1px solid var(--outline-variant);
  border-radius: 0; background: transparent;
}
.person:hover, .person:focus-visible {
  background: var(--surface-container); box-shadow: none; transform: none;
  border-color: var(--outline-variant);
}
.person__num {
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 300;
  color: var(--outline);
}
.person__name { margin: 0; font-size: 1.25rem; }
.person__role { margin: 2px 0 0; font-size: .88rem; color: var(--on-surface-variant); }
.person__side {
  display: flex; flex-direction: column; align-items: flex-end; gap: 6px;
}
.person__cta { font-size: .8rem; font-weight: 600; color: var(--secondary); }

/* ---------- portfolio tiers ---------- */
.tiergroup {
  margin: 30px 0; padding: 20px 22px;
  border: 1px solid var(--outline-variant); border-radius: var(--radius-lg);
  background: var(--surface-container);
  border-left: 4px solid var(--outline-variant);
}
.tiergroup--verified { border-left-color: var(--ok); }
.tiergroup--partial { border-left-color: var(--warn); }
.tiergroup--claimed { border-left-color: var(--bad); }
.tiergroup__head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.tiergroup__label { margin: 0; font-size: 1.15rem; }
.tiergroup__desc { margin: 6px 0 12px; font-size: .88rem; color: var(--on-surface-variant); }
.holdings { border-top: 1px solid var(--outline-variant); }
.holding {
  display: grid; grid-template-columns: 190px 130px 1fr;
  gap: 4px 18px; padding: 10px 0;
  border-bottom: 1px solid var(--outline-variant);
  font-size: .92rem;
}
.holding:last-child { border-bottom: none; }
.holding__name { font-weight: 600; font-family: var(--font-display); font-size: 1rem; }
.holding__sector { color: var(--secondary); font-size: .82rem; align-self: center; }
.holding__note { color: var(--on-surface-variant); font-size: .85rem; }

/* ---------- timeline ---------- */
.timeline { list-style: none; margin: 20px 0 0; padding: 0 0 0 26px; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: var(--outline-variant);
}
.tl-item { position: relative; margin-bottom: 24px; }
.tl-dot {
  position: absolute; left: -26px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--secondary); border: 2px solid var(--background);
  transform: translateX(1px);
}
.tl-card {
  background: var(--surface-container); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg); padding: 16px 20px;
}
.tl-date {
  font-size: .78rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--secondary);
}
.tl-title { margin: 4px 0 6px; font-size: 1.15rem; }
.tl-body { margin: 0; font-size: .92rem; color: var(--on-surface-variant); }

/* ---------- article ---------- */
.reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: var(--secondary); z-index: 60;
}
.article-layout { display: grid; grid-template-columns: 200px 1fr; gap: 36px; }
.toc { position: relative; }
.toc__inner {
  position: sticky; top: 120px;
  display: flex; flex-direction: column; gap: 2px;
  border-left: 1px solid var(--outline-variant); padding-left: 4px;
}
.toc-link {
  padding: 6px 10px; text-decoration: none; border-radius: var(--radius);
  color: var(--on-surface-variant); font-size: .85rem;
}
.toc-link:hover { background: var(--surface-container); }
.toc-link--active { color: var(--secondary); font-weight: 700; }
.article-section { margin-bottom: 36px; }
.prose h2 { font-size: 1.5rem; margin: 0 0 12px; }
.prose h3 { font-size: 1.08rem; margin: 20px 0 6px; }
.prose p { margin: 10px 0; }
.prose ul { padding-left: 22px; margin: 8px 0; }
.prose li { margin: 4px 0; }
.prose blockquote {
  margin: 18px 0; padding: 10px 20px;
  border-left: 3px solid var(--secondary);
  background: var(--surface-container);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-display); font-size: 1.05rem;
}
.prose pre {
  background: var(--surface-container-high); border-radius: var(--radius);
  padding: 14px; overflow-x: auto; font-size: .85rem;
}

/* ---------- sources / legend / refs ---------- */
.legend {
  display: flex; flex-direction: column; gap: 8px;
  margin: 4px 0 10px; padding: 16px 20px;
  background: var(--surface-container); border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
}
.legend__row { display: flex; align-items: center; gap: 12px; }
.legend__desc { font-size: .88rem; color: var(--on-surface-variant); }
.srcgroup { margin: 28px 0; }
.srclist { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--outline-variant); }
.srclist li { padding: 9px 0; border-bottom: 1px solid var(--outline-variant); font-size: .92rem; }
.row-link { color: var(--primary); text-decoration: none; border-bottom: 1px dotted var(--outline); word-break: break-word; }
.row-link:hover { color: var(--secondary); border-bottom-color: var(--secondary); }
[data-theme="dark"] .row-link { color: var(--on-surface); }
.refs { margin-top: 40px; padding-top: 8px; }
.refs__title {
  font-size: .82rem; font-family: var(--font-body); font-weight: 700;
  text-transform: uppercase; letter-spacing: .14em;
  color: var(--secondary); margin: 0 0 8px;
}
.refs ul { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--outline-variant); }
.refs li { padding: 8px 0; border-bottom: 1px solid var(--outline-variant); font-size: .9rem; }

/* ---------- dialog ---------- */
.dialog {
  border: 1px solid var(--outline-variant); border-radius: var(--radius-lg);
  background: var(--surface); color: var(--on-surface);
  padding: 0; max-width: 640px; width: calc(100vw - 40px);
  max-height: calc(100vh - 80px); box-shadow: var(--elev-2);
}
.dialog::backdrop { background: rgba(15, 20, 26, .55); backdrop-filter: blur(2px); }
.dialog__bar {
  display: flex; align-items: center; position: sticky; top: 0;
  padding: 10px 12px 0; background: var(--surface);
}
.dialog__spacer { flex: 1; }
.dialog__body { padding: 0 26px 26px; }
.dialog__body h2 { margin-top: 0; }
.dialog__summary { color: var(--on-surface); }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--outline-variant);
  padding: 26px 20px 34px; text-align: center;
  color: var(--on-surface-variant); font-size: .85rem;
}
.footer p { margin: 0 0 10px; }
.footer__links { display: flex; justify-content: center; gap: 10px; }
.footer__link { padding: 8px; border-radius: 50%; }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
  .page { padding: 28px 16px 56px; }
  .fact { grid-template-columns: 1fr; gap: 6px; }
  .fact__status { justify-self: start; }
  .person { grid-template-columns: 40px 1fr; }
  .person__side { grid-column: 2; flex-direction: row; align-items: center; }
  .holding { grid-template-columns: 1fr; gap: 2px; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { display: none; }
  .gh-star__label { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}