/* =========================================================
   不朽情缘体验 · 版本档案馆 — 共享站点样式 /assets/site.css
   ========================================================= */

/* ---------- 1. 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

img, svg, video { display: block; max-width: 100%; height: auto; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

a { color: inherit; text-decoration: none; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #081A29;
  --ink-800: #0B2133;
  --ink-700: #102B40;
  --paper: #F1E7D6;
  --paper-edge: #DCCDB6;
  --gold: #C7A24A;
  --amber: #E08A3C;
  --celadon: #79B3A0;
  --cream: #FAF4E8;
  --mist: #9FB3C2;
  --brown: #1B1410;

  --hair: rgba(199, 162, 74, 0.30);
  --hair-soft: rgba(199, 162, 74, 0.16);
  --panel-glass: rgba(12, 35, 52, 0.86);

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --w-max: 1180px;
  --w-narrow: 760px;
  --r-pill: 999px;
  --r-card: 16px;

  --shadow-soft: 0 22px 46px -30px rgba(0, 0, 0, 0.9);
  --shadow-lift: 0 26px 60px -32px rgba(0, 0, 0, 0.95);
  --stack-gap: 18px;
}

/* ---------- 3. 中文排版基座 ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(150% 110% at 84% -12%, rgba(199, 162, 74, 0.11), transparent 58%),
    radial-gradient(120% 90% at -8% 104%, rgba(16, 43, 64, 0.92), transparent 62%);
  background-attachment: fixed;
  color: var(--cream);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.01em;
}

::selection {
  background: var(--gold);
  color: var(--brown);
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

#main-content {
  display: block;
  scroll-margin-top: 92px;
}

/* ---------- 4. 可见性工具 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translate(-50%, -160%);
  z-index: 200;
  padding: 12px 22px;
  border-radius: var(--r-pill);
  background: var(--amber);
  color: var(--brown);
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow-lift);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* ---------- 5. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: 22px;
}

.container--narrow {
  max-width: var(--w-narrow);
}

.section {
  position: relative;
  padding-block: clamp(46px, 7vw, 96px);
}

.section--paper {
  background:
    linear-gradient(180deg, rgba(220, 205, 182, 0.35) 0%, rgba(220, 205, 182, 0) 22%),
    var(--paper);
  color: var(--brown);
  border-block: 1px solid var(--paper-edge);
}

.section--ink {
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(199, 162, 74, 0.10), transparent 60%),
    var(--ink-700);
  border-block: 1px solid var(--hair-soft);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: currentColor;
  opacity: 0.8;
}

.section--paper .eyebrow { color: #8C6A22; }

.section-title {
  font-size: clamp(26px, 3.4vw, 36px);
  color: var(--cream);
}

.section--paper .section-title { color: var(--brown); }

.lead {
  font-size: clamp(15px, 1.5vw, 17.5px);
  color: var(--mist);
  max-width: 58ch;
}

.section--paper .lead { color: #4A3B2C; }

.rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--hair), rgba(199, 162, 74, 0));
  margin-block: clamp(24px, 4vw, 44px);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--asym { grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.9fr); align-items: start; }

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap);
}

/* ---------- 6. 悬浮胶囊头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 14px 16px 12px;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 -26px 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(8, 26, 41, 0.97) 42%, rgba(8, 26, 41, 0));
  pointer-events: none;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  max-width: var(--w-max);
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 7px 20px 7px 8px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: var(--panel-glass);
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  box-shadow: var(--shadow-soft);
  transition: padding 220ms ease, background-color 220ms ease, border-color 220ms ease;
}

.brand:hover { border-color: rgba(199, 162, 74, 0.6); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border-radius: 11px;
  border: 1px solid rgba(199, 162, 74, 0.55);
  background: linear-gradient(150deg, rgba(199, 162, 74, 0.26), rgba(199, 162, 74, 0.04));
  color: var(--gold);
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
  transform: rotate(-3deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--serif);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: 0.03em;
}

.brand-sub {
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

/* 导航胶囊 */
.nav-panel {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: var(--panel-glass);
  backdrop-filter: blur(12px) saturate(120%);
  -webkit-backdrop-filter: blur(12px) saturate(120%);
  box-shadow: var(--shadow-soft);
  transition: padding 220ms ease, border-color 220ms ease;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  border-radius: var(--r-pill);
  font-size: 14.5px;
  color: rgba(250, 244, 232, 0.78);
  white-space: nowrap;
  transition: color 160ms ease, background-color 160ms ease;
}

.nav-link:hover {
  color: var(--cream);
  background: rgba(199, 162, 74, 0.13);
}

.nav-link[aria-current="page"] {
  color: var(--gold);
  background: rgba(199, 162, 74, 0.16);
  box-shadow: inset 0 0 0 1px rgba(199, 162, 74, 0.34);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--amber);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 4px;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  background: linear-gradient(150deg, #EDA057, var(--amber));
  color: var(--brown);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  box-shadow: 0 10px 24px -14px rgba(224, 138, 60, 0.95);
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.header-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 14px 28px -14px rgba(224, 138, 60, 0.95);
}

/* 滚动后收窄 */
.site-header[data-scrolled="true"] .brand {
  padding: 4px 16px 4px 5px;
  border-color: rgba(199, 162, 74, 0.44);
}

.site-header[data-scrolled="true"] .brand-mark {
  width: 32px;
  height: 32px;
  flex-basis: 32px;
  font-size: 16px;
  border-radius: 9px;
}

.site-header[data-scrolled="true"] .nav-panel { padding: 4px; }

.site-header[data-scrolled="true"] .nav-link {
  padding: 7px 13px;
  font-size: 14px;
}

.site-header[data-scrolled="true"] .header-cta {
  padding: 8px 17px;
  font-size: 13.5px;
}

/* 移动端索引签按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: var(--panel-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--cream);
  box-shadow: var(--shadow-soft);
}

.nav-toggle-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 18px;
  height: 14px;
}

.nav-toggle-bars span {
  display: block;
  height: 1.5px;
  width: 100%;
  background: var(--cream);
  border-radius: 2px;
  transition: transform 200ms ease, opacity 200ms ease;
}

.site-header[data-open="true"] .nav-toggle-bars span:first-child {
  transform: translateY(2.75px) rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle-bars span:last-child {
  transform: translateY(-2.75px) rotate(-45deg);
}

/* 滚动进度丝 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 90;
  background: rgba(199, 162, 74, 0.12);
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--amber));
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 7vw, 88px);
  padding-block: clamp(44px, 6vw, 76px) 24px;
  border-top: 1px solid rgba(199, 162, 74, 0.34);
  background:
    radial-gradient(110% 80% at 8% 0%, rgba(199, 162, 74, 0.13), transparent 58%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  color: var(--cream);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(220, 205, 182, 0.05) 0px,
    rgba(220, 205, 182, 0.05) 1px,
    transparent 1px,
    transparent 9px
  );
  opacity: 0.5;
}

.site-footer > .container { position: relative; }

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.9fr) minmax(0, 1.1fr);
  gap: clamp(26px, 4vw, 58px);
  padding-bottom: clamp(28px, 4vw, 46px);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.footer-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  border: 1px solid rgba(199, 162, 74, 0.6);
  background: linear-gradient(150deg, rgba(199, 162, 74, 0.3), rgba(199, 162, 74, 0.05));
  color: var(--gold);
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  transform: rotate(-3deg);
}

.footer-brand-name {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: 0.04em;
}

.footer-tagline {
  max-width: 22ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.5vw, 32px);
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hair-soft);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-link {
  position: relative;
  display: inline-block;
  padding-left: 14px;
  font-size: 14.5px;
  color: rgba(250, 244, 232, 0.74);
  transition: color 160ms ease, padding-left 160ms ease;
}

.footer-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 7px;
  height: 1px;
  background: var(--celadon);
  opacity: 0.7;
  transition: width 160ms ease, background-color 160ms ease;
}

.footer-link:hover {
  color: var(--cream);
  padding-left: 18px;
}

.footer-link:hover::before {
  width: 12px;
  background: var(--amber);
}

.footer-contact { min-width: 0; }

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-line {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.label-mono {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.contact-value {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(250, 244, 232, 0.9);
  word-break: break-word;
}

.footer-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--hair-soft);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--hair-soft);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.legal-icp { color: rgba(159, 179, 194, 0.85); }

.legal-copy { color: rgba(159, 179, 194, 0.7); }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.2;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.btn:hover { transform: translateY(-1px); }

.btn--primary {
  background: linear-gradient(150deg, #EDA057, var(--amber));
  color: var(--brown);
  box-shadow: 0 14px 30px -18px rgba(224, 138, 60, 0.95);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(199, 162, 74, 0.5);
  color: var(--cream);
}

.btn--ghost:hover {
  border-color: var(--gold);
  background: rgba(199, 162, 74, 0.12);
}

.section--paper .btn--ghost {
  border-color: rgba(27, 20, 16, 0.35);
  color: var(--brown);
}

.section--paper .btn--ghost:hover {
  border-color: var(--brown);
  background: rgba(27, 20, 16, 0.06);
}

.btn--sm {
  padding: 9px 17px;
  font-size: 13.5px;
}

/* ---------- 9. 展签卡 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-card);
  background:
    linear-gradient(160deg, rgba(16, 43, 64, 0.95), rgba(8, 26, 41, 0.92));
  box-shadow: var(--shadow-soft);
  transition: border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
}

.card:hover {
  border-color: rgba(199, 162, 74, 0.42);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.card--paper {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0)) ,
    var(--paper);
  border-color: var(--paper-edge);
  color: var(--brown);
  box-shadow: 0 18px 34px -28px rgba(27, 20, 16, 0.6);
}

.card--paper:hover { border-color: #C0AE92; }

.card-tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border: 1px solid rgba(121, 179, 160, 0.45);
  border-radius: var(--r-pill);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celadon);
  background: rgba(121, 179, 160, 0.09);
}

.card--paper .card-tag {
  border-color: rgba(140, 106, 34, 0.4);
  color: #8C6A22;
  background: rgba(199, 162, 74, 0.14);
}

.card-title {
  font-family: var(--serif);
  font-size: clamp(18px, 1.9vw, 22px);
  font-weight: 700;
  color: var(--cream);
  line-height: 1.4;
}

.card--paper .card-title { color: var(--brown); }

.card-text {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.card--paper .card-text { color: #4A3B2C; }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding-top: 12px;
  border-top: 1px solid var(--hair-soft);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}

.card--paper .meta-row {
  border-top-color: rgba(27, 20, 16, 0.14);
  color: #6B5844;
}

/* ---------- 10. 索引签与筛选 ---------- */
.index-tabs,
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.index-tab {
  padding: 8px 18px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: rgba(16, 43, 64, 0.6);
  color: rgba(250, 244, 232, 0.78);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.index-tab:hover {
  color: var(--cream);
  border-color: rgba(199, 162, 74, 0.55);
}

.index-tab[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--brown);
  font-weight: 700;
}

.section--paper .index-tab {
  background: rgba(255, 255, 255, 0.5);
  border-color: rgba(27, 20, 16, 0.18);
  color: #4A3B2C;
}

.section--paper .index-tab[aria-pressed="true"] {
  background: var(--brown);
  border-color: var(--brown);
  color: var(--paper);
}

.filter-count {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
}

.is-filtered { display: none !important; }

/* ---------- 11. 时间轴 ---------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vw, 34px);
  padding-left: 30px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(199, 162, 74, 0.1));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 132px) minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 28px);
  align-items: start;
}

.timeline-mark {
  position: absolute;
  left: -30px;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--ink-900);
  box-shadow: 0 0 0 4px rgba(199, 162, 74, 0.1);
}

.timeline-year {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  padding-top: 4px;
}

/* ---------- 12. 面包屑 / 长文 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.breadcrumb a {
  color: rgba(250, 244, 232, 0.7);
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.breadcrumb a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.breadcrumb-sep { color: rgba(199, 162, 74, 0.7); }

.prose {
  max-width: 70ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(250, 244, 232, 0.86);
}

.prose > * + * { margin-top: 1.05em; }

.prose h2 {
  font-size: clamp(21px, 2.4vw, 26px);
  color: var(--cream);
  margin-top: 1.8em;
}

.prose h3 {
  font-size: clamp(17px, 1.9vw, 20px);
  color: var(--cream);
  margin-top: 1.5em;
}

.prose ul, .prose ol {
  padding-left: 1.25em;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li + li { margin-top: 0.45em; }

.prose a {
  color: var(--gold);
  border-bottom: 1px solid rgba(199, 162, 74, 0.45);
}

.prose strong { color: var(--cream); }

.section--paper .prose { color: #3A2E22; }
.section--paper .prose h2,
.section--paper .prose h3,
.section--paper .prose strong { color: var(--brown); }
.section--paper .prose a { color: #8C6A22; border-bottom-color: rgba(140, 106, 34, 0.45); }

/* ---------- 13. 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--hair);
  background:
    linear-gradient(150deg, rgba(16, 43, 64, 0.95), rgba(8, 26, 41, 0.98));
  box-shadow: var(--shadow-soft);
}

.section--paper .media {
  border-color: var(--paper-edge);
  background: linear-gradient(150deg, #E7DAC5, #D9C9AF);
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 520ms ease;
}

.media:hover > img { transform: scale(1.03); }

.media--4x3 { aspect-ratio: 4 / 3; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media--1x1 { aspect-ratio: 1 / 1; }

.media--empty {
  display: grid;
  place-items: center;
  border-style: dashed;
  border-color: rgba(199, 162, 74, 0.4);
  background-image:
    repeating-linear-gradient(45deg, rgba(199, 162, 74, 0.07) 0 1px, transparent 1px 12px);
}

.media--empty::after {
  content: attr(data-label);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(199, 162, 74, 0.75);
  text-align: center;
  padding: 0 12px;
}

.media-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(199, 162, 74, 0.5);
  background: rgba(8, 26, 41, 0.78);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.media-caption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
  color: var(--mist);
}

.section--paper .media-caption { color: #6B5844; }

/* ---------- 14. 入场显现 ---------- */
.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  will-change: opacity, transform;
}

.has-reveal [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
  transition: opacity 560ms ease, transform 560ms cubic-bezier(0.22, 0.7, 0.3, 1);
  will-change: auto;
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1100px) {
  .footer-top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
  }
  .footer-contact {
    grid-column: 1 / -1;
    padding-top: 22px;
    border-top: 1px solid var(--hair-soft);
  }
}

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    justify-content: space-between;
    row-gap: 10px;
  }

  .nav-toggle { display: inline-flex; }

  .nav-panel {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px;
    border-radius: 24px;
    border-color: rgba(199, 162, 74, 0.38);
    background: rgba(9, 28, 43, 0.98);
    box-shadow: var(--shadow-lift);
  }

  .site-header[data-open="true"] .nav-panel { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    justify-content: space-between;
    padding: 12px 14px;
    border-radius: 14px;
    font-size: 15px;
    border-bottom: 1px solid rgba(199, 162, 74, 0.12);
  }

  .nav-link:last-child { border-bottom: 0; }

  .nav-link[aria-current="page"]::after {
    position: static;
    margin-left: 8px;
    width: 5px;
    height: 5px;
  }

  .header-cta {
    order: -1;
    margin: 0 0 8px;
    padding: 13px 20px;
    font-size: 15px;
  }

  .site-header[data-scrolled="true"] .header-cta {
    padding: 13px 20px;
    font-size: 15px;
  }

  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--asym { grid-template-columns: minmax(0, 1fr); }

  .timeline-item { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .timeline-year { padding-top: 0; }
  .timeline { padding-left: 26px; }
  .timeline-mark { left: -26px; }
}

@media (max-width: 760px) {
  body { font-size: 15.5px; line-height: 1.78; }

  .container { padding-inline: 18px; }

  .site-header { padding: 10px 12px 8px; }

  .brand { padding: 6px 15px 6px 6px; gap: 9px; }

  .brand-name { font-size: 15px; }

  .brand-sub { font-size: 8.5px; letter-spacing: 0.12em; }

  .brand-mark { width: 32px; height: 32px; flex-basis: 32px; font-size: 16px; border-radius: 9px; }

  .nav-toggle { padding: 9px 15px; }

  .grid--2,
  .grid--3 { grid-template-columns: minmax(0, 1fr); }

  .footer-top { grid-template-columns: minmax(0, 1fr); gap: 28px; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .contact-line { grid-template-columns: 40px minmax(0, 1fr); }

  #main-content { scroll-margin-top: 78px; }
}

@media (max-width: 420px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .nav-toggle-label { display: none; }
}

/* ---------- 16. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .has-reveal [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .card:hover,
  .btn:hover,
  .header-cta:hover,
  .media:hover > img { transform: none; }
}

@media print {
  .site-header,
  .site-footer,
  .scroll-progress,
  .skip-link { display: none; }

  body { background: #fff; color: #000; }
}