/* ============================================================
   海博体育 · 共享站点样式 /assets/site.css
   仪表盘底色 + 米白数据纸面 + 荧光青信号线 + 珊瑚橙高亮
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}

body,
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; }
hr { border: 0; }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- 2. tokens ---------- */
:root {
  --sea: #0B2540;
  --sea-layer: #143A5C;
  --signal: #35E0D0;
  --signal-deep: #062B33;
  --coral: #FF6B4A;
  --cream: #F5F1E8;
  --stone: #6B7681;
  --moss: #7C9A72;
  --terracotta: #C4744F;
  --glass: rgba(245, 241, 232, 0.10);
  --ink: #0A1014;

  --cream-80: rgba(245, 241, 232, 0.80);
  --cream-64: rgba(245, 241, 232, 0.64);
  --line-dark: rgba(107, 118, 129, 0.34);
  --line-dark-soft: rgba(107, 118, 129, 0.22);
  --line-light: rgba(11, 37, 64, 0.14);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-narrow: "Barlow Condensed", "Oswald", "Roboto Condensed", "Arial Narrow", var(--font-sans);
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --container: 1240px;
  --gutter: clamp(20px, 4.4vw, 56px);
  --radius: 2px;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

/* ---------- 3. 中文排版基准 ---------- */
body {
  min-height: 100vh;
  background-color: var(--sea);
  background-image:
    linear-gradient(rgba(107, 118, 129, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 118, 129, 0.07) 1px, transparent 1px);
  background-size: 88px 88px, 88px 88px;
  color: var(--cream);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

p { text-wrap: pretty; }

::selection {
  background: var(--signal);
  color: var(--signal-deep);
}

.sr-only {
  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;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 11px 20px;
  background: var(--signal);
  color: var(--signal-deep);
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 4. 容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }

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

.section { padding-block: clamp(48px, 7vw, 104px); }
.section__head {
  display: grid;
  gap: 12px;
  max-width: 64ch;
  margin-bottom: clamp(24px, 4vw, 48px);
}

/* ---------- 5. 文字组件 ---------- */
.display {
  font-weight: 200;
  font-size: clamp(40px, 6.4vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--cream);
  text-wrap: balance;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.3em;
  color: var(--stone);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  flex: none;
  width: 4px;
  height: 4px;
  background: var(--moss);
}

.lede {
  max-width: 62ch;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.95;
  color: var(--cream-80);
}

.mono {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.link {
  position: relative;
  color: var(--signal);
  transition: color 0.16s var(--ease);
}
.link::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: -3px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s var(--ease);
}
.link:hover::after,
.link:focus-visible::after { transform: scaleX(1); }

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid var(--signal);
  border-radius: var(--radius);
  color: var(--signal);
  background: transparent;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.16em;
  transition: background 0.16s var(--ease), color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.btn:hover { background: var(--signal); color: var(--signal-deep); }

.btn--solid {
  background: var(--signal);
  color: var(--signal-deep);
}
.btn--solid:hover { background: #5CEBDD; border-color: #5CEBDD; }

.btn--ghost {
  border-color: var(--line-dark);
  color: var(--cream);
}
.btn--ghost:hover {
  background: var(--glass);
  border-color: var(--cream);
  color: var(--cream);
}

.btn--coral {
  border-color: var(--coral);
  color: var(--coral);
}
.btn--coral:hover { background: var(--coral); color: #2A0D05; }

/* ---------- 7. 内容层组件 ---------- */
.paper {
  background: var(--cream);
  color: var(--ink);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 36px);
}
.paper a { color: var(--sea-layer); }
.paper .eyebrow { color: var(--stone); }

.card {
  background: var(--sea-layer);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 32px);
  transition: border-color 0.16s var(--ease);
}
.card:hover { border-color: rgba(53, 224, 208, 0.6); }

.glass-panel {
  background: var(--glass);
  border: 1px solid rgba(245, 241, 232, 0.18);
  border-radius: var(--radius);
  padding: clamp(18px, 2.6vw, 28px);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--cream);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(53, 224, 208, 0.30);
  border-radius: var(--radius);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.12em;
  color: var(--cream-80);
  white-space: nowrap;
}
.chip--moss { border-color: rgba(124, 154, 114, 0.55); color: var(--moss); }
.chip--coral { border-color: rgba(255, 107, 74, 0.55); color: var(--coral); }

/* ---------- 8. 图片容器基础规则（页面阶段放图） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(53, 224, 208, 0.35);
  border-radius: var(--radius);
  background: var(--sea-layer);
  aspect-ratio: 16 / 9;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.06);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(53, 224, 208, 0.20);
  pointer-events: none;
}
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

/* ---------- 9. 数据表 ---------- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--cream);
}

.data-table {
  width: 100%;
  min-width: 520px;
  background: var(--cream);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
}
.data-table thead th {
  padding: 12px 14px;
  background: var(--sea-layer);
  color: var(--cream);
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-align: left;
  white-space: nowrap;
}
.data-table tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-light);
  transition: background 0.09s linear;
}
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover td { background: rgba(53, 224, 208, 0.10); }
.data-table tbody tr:hover td:first-child { box-shadow: inset 2px 0 0 var(--signal); }
.data-table .num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}
.data-table thead th.num { text-align: right; }

/* ---------- 10. 时间线轨道 ---------- */
.rail {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--terracotta);
}
.rail__item { position: relative; padding-bottom: 28px; }
.rail__item:last-child { padding-bottom: 0; }
.rail__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(124, 154, 114, 0.16);
}

/* ---------- 11. 粘性章节索引 ---------- */
.index-list {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 2px;
  font-size: 12px;
  letter-spacing: 0.12em;
}
.index-list__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0 8px 12px;
  border-left: 1px solid var(--line-dark);
  color: var(--stone);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.index-list__link:hover { color: var(--cream); }
.index-list__link[aria-current] {
  color: var(--signal);
  border-left-color: var(--signal);
}
.index-list__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--moss);
}

/* ---------- 12. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--stone);
}
.breadcrumb a {
  color: var(--cream-64);
  transition: color 0.16s var(--ease);
}
.breadcrumb a:hover { color: var(--signal); }
.breadcrumb__sep { color: rgba(107, 118, 129, 0.65); }

/* ---------- 13. 滚动进度条（由 JS 注入） ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--signal);
  z-index: 150;
  pointer-events: none;
}

/* ============================================================
   14. 页头 · 居中刊头
   ============================================================ */
.site-header {
  position: relative;
  z-index: 60;
  background: var(--sea);
  border-bottom: 1px solid var(--line-dark);
  color: var(--cream);
}
.site-header::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 224, 208, 0.55), transparent);
}

.masthead-shell {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 22px 0 16px;
}
.masthead__side { display: flex; align-items: center; gap: 14px; min-width: 0; }
.masthead__side--left { justify-self: start; }
.masthead__side--right { justify-self: end; }

/* 左翼仪表刻度 */
.gauge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 11px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.14em;
  color: var(--stone);
  white-space: nowrap;
}
.gauge__dot {
  flex: none;
  width: 5px;
  height: 5px;
  background: var(--moss);
  box-shadow: 0 0 0 3px rgba(124, 154, 114, 0.18);
}
.gauge__label { color: var(--stone); }
.gauge__value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--cream);
  letter-spacing: 0.04em;
}

/* 中央报头 */
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  text-align: center;
}
.brand__mark {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(26px, 3.2vw, 42px);
  line-height: 1;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
  color: var(--cream);
  transition: color 0.16s var(--ease);
}
.brand:hover .brand__mark,
.brand:focus-visible .brand__mark { color: var(--signal); }
.brand__note {
  font-size: 10px;
  line-height: 1.6;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--stone);
  white-space: nowrap;
}

/* 右翼收藏位 */
.shelf-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid rgba(53, 224, 208, 0.35);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--cream-80);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.14em;
  white-space: nowrap;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease), background 0.16s var(--ease);
}
.shelf-link:hover,
.shelf-link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(53, 224, 208, 0.09);
}
.shelf-link__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  color: var(--coral);
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid rgba(245, 241, 232, 0.28);
  border-radius: var(--radius);
  color: var(--cream);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.16em;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.nav-toggle:hover { border-color: var(--signal); color: var(--signal); }
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
  width: 14px;
  height: 12px;
}
.nav-toggle__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

/* 栏目导航 */
.site-nav { border-top: 1px solid var(--line-dark-soft); }
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(14px, 3.2vw, 44px);
}
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 14px 2px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.16em;
  color: rgba(245, 241, 232, 0.76);
  transition: color 0.18s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 100%;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s var(--ease);
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--cream); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--signal); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 记分牌读数条 */
.score-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line-dark-soft);
}
.score-strip__item {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  padding: 10px 0;
  min-width: 0;
}
.score-strip__item + .score-strip__item {
  border-left: 1px solid var(--line-dark-soft);
}
.score-strip__key {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--stone);
  white-space: nowrap;
}
.score-strip__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cream);
  white-space: nowrap;
}

/* ============================================================
   15. 页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 128px);
  background: var(--sea);
  border-top: 1px solid rgba(53, 224, 208, 0.30);
  color: var(--cream);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--signal), rgba(53, 224, 208, 0));
  opacity: 0.5;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(32px, 6vw, 80px);
  padding-block: clamp(48px, 7vw, 84px) clamp(32px, 5vw, 56px);
}

.footer-brand { min-width: 0; }
.footer-brand__mark {
  font-weight: 200;
  font-size: clamp(30px, 4.4vw, 58px);
  line-height: 1.05;
  letter-spacing: 0.12em;
  color: var(--cream);
}
.footer-brand__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--cream-64);
}

.footer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.footer-contact {
  display: grid;
  gap: 8px;
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark-soft);
}
.footer-contact__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  font-size: 13px;
  line-height: 1.8;
}
.footer-contact__key {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--stone);
  padding-top: 3px;
  white-space: nowrap;
}
.footer-contact__val {
  color: var(--cream-80);
  word-break: break-word;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
}

.footer-col { min-width: 0; }
.footer-col__title {
  padding-top: 12px;
  border-top: 1px solid var(--line-dark);
  margin-bottom: 14px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.22em;
  color: var(--signal);
}
.footer-col__list { display: grid; gap: 2px; }
.footer-col__link {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cream-80);
  transition: color 0.16s var(--ease), padding-left 0.16s var(--ease);
}
.footer-col__link:hover,
.footer-col__link:focus-visible {
  color: var(--signal);
  padding-left: 6px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 18px 40px;
  border-top: 1px solid var(--line-dark-soft);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--stone);
}
.footer-legal { font-family: var(--font-mono); letter-spacing: 0.06em; }
.footer-copy { color: var(--stone); }

/* ============================================================
   16. 响应式
   ============================================================ */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  .masthead {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px 0 12px;
  }
  .masthead__side--left { display: none; }
  .masthead__side--right { gap: 10px; }
  .brand { align-items: flex-start; text-align: left; }
  .brand__mark {
    font-size: 24px;
    letter-spacing: 0.16em;
    text-indent: 0.16em;
  }
  .brand__note {
    font-size: 9px;
    letter-spacing: 0.24em;
    text-indent: 0;
  }
  .nav-toggle { display: inline-flex; }
  .shelf-link { padding: 8px 10px; font-size: 11px; letter-spacing: 0.10em; }

  .site-nav { display: none; border-top: 1px solid var(--line-dark-soft); }
  .site-nav[data-open] { display: block; }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
    padding: 6px 0 14px;
  }
  .site-nav__item { width: 100%; }
  .site-nav__link {
    display: block;
    padding: 12px 4px;
    border-bottom: 1px solid var(--line-dark-soft);
    font-size: 14px;
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 4px;
    height: 4px;
    margin-right: 9px;
    vertical-align: middle;
    background: var(--signal);
  }

  .score-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .score-strip__key { letter-spacing: 0.12em; }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-3 { grid-column: span 6; }
  .span-9 { grid-column: span 6; }
  .span-8 { grid-column: span 6; }
  .span-6 { grid-column: span 6; }

  .index-list { position: static; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .score-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .score-strip__item { padding: 9px 0; gap: 6px; }
  .score-strip__val { font-size: 12px; }
  .score-strip__key { font-size: 9px; letter-spacing: 0.08em; }
  .footer-bottom { padding-bottom: 32px; }
  .grid-12 { grid-template-columns: minmax(0, 1fr); }
  .span-3, .span-4, .span-6, .span-8, .span-9 { grid-column: span 1; }
  .display { font-size: clamp(32px, 9vw, 44px); }
  .breadcrumb { font-size: 11px; }
}

/* ============================================================
   17. 无障碍与动效降级
   ============================================================ */
@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;
  }
}