/* ============================================================
   亚洲体育赛事 · 共享样式 /assets/site.css
   深墨蓝底 + 竞技红/警示黄斜切 + 青玉绿数据高亮
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #0B1726;
  --ink-2: #14263B;
  --paper: #F5F1E8;
  --stone: #2A323C;
  --red: #E23B2E;
  --yellow: #F2B21B;
  --jade: #2FA98C;
  --clay: #C2664A;
  --moss: #6E8B7A;
  --mist: #8FA0B0;

  --line: rgba(245, 241, 232, 0.13);
  --line-strong: rgba(245, 241, 232, 0.26);
  --paper-line: rgba(11, 23, 38, 0.14);

  --shell: 1440px;
  --rail: 264px;
  --header-h: 78px;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(.22, .61, .36, 1);

  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

/* ---------- 3. 基础中文排版 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  html:focus-within { scroll-behavior: smooth; }
}
body {
  background-color: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.012em;
  text-align: left;
  word-break: normal;
  line-break: strict;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4 { font-weight: 900; line-height: 1.14; letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(34px, 6.2vw, 72px); font-stretch: 87.5%; }
h2 { font-size: clamp(26px, 3.6vw, 44px); font-stretch: 90%; }
h3 { font-size: clamp(20px, 2.2vw, 28px); }
h4 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
p { text-wrap: pretty; }
strong { font-weight: 700; }

:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 4. 布局骨架 ---------- */
.container { width: min(100% - 40px, var(--shell)); margin-inline: auto; }
.layout-rail {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.content-col { min-width: 0; }
.rail { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
.rail-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.rail-index { margin-top: 18px; display: flex; flex-direction: column; gap: 2px; }
.rail-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 999px;
  font-size: 14px;
  color: rgba(245, 241, 232, 0.55);
  transition: color .25s var(--ease), background-color .25s var(--ease);
}
.rail-index a::before {
  content: "";
  width: 6px; height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--stone);
  transition: background-color .25s var(--ease), transform .25s var(--ease);
}
.rail-index a:hover { color: var(--paper); background: rgba(245, 241, 232, 0.06); }
.rail-index a.is-active { color: var(--paper); background: rgba(47, 169, 140, 0.12); }
.rail-index a.is-active::before { background: var(--jade); transform: scale(1.35); }
.rail-foot {
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--mist);
}

.page-main { display: block; }
.page-main--offset { padding-top: var(--header-h); }

.section { padding: clamp(56px, 8vw, 118px) 0; }
.section--tight { padding: clamp(36px, 5vw, 72px) 0; }
.section--deep { background: var(--ink-2); }
.section--paper { background: var(--paper); color: var(--ink); }
.section--paper .lead,
.section--paper .text-muted { color: #47505C; }
.section--paper .eyebrow { color: var(--clay); }
.section--paper .rule,
.section--paper .rail-title { border-color: var(--paper-line); }

/* ---------- 5. 字体与文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--jade);
}
.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  border-radius: 2px;
  background: currentColor;
  flex: none;
}
.section-title { margin-top: 16px; }
.display-xl { font-size: clamp(44px, 9vw, 104px); font-weight: 900; font-stretch: 84%; letter-spacing: -0.03em; line-height: 1.02; }
.display-lg { font-size: clamp(32px, 5vw, 64px); font-weight: 900; font-stretch: 88%; letter-spacing: -0.025em; line-height: 1.08; }
.lead { font-size: clamp(16px, 1.5vw, 19px); color: rgba(245, 241, 232, 0.76); max-width: 62ch; }
.text-muted { color: var(--mist); }
.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.06em; }
.data-num {
  font-family: var(--font-mono);
  font-style: italic;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1;
  color: var(--jade);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--red); color: var(--paper); }
.btn-primary:hover { background: #c9301f; }
.btn-jade { background: var(--jade); color: #06201A; }
.btn-jade:hover { background: #279678; }
.btn-ghost { background: transparent; color: var(--paper); border-color: var(--line-strong); }
.btn-ghost:hover { background: rgba(245, 241, 232, 0.08); border-color: var(--paper); }
.section--paper .btn-ghost { color: var(--ink); border-color: var(--paper-line); }
.section--paper .btn-ghost:hover { background: rgba(11, 23, 38, 0.06); border-color: var(--ink); }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------- 7. 标签 / 胶囊 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  border: 1px solid transparent;
}
.tag-red { background: rgba(226, 59, 46, 0.16); color: #FF8E82; border-color: rgba(226, 59, 46, 0.42); }
.tag-yellow { background: rgba(242, 178, 27, 0.15); color: #F7CB63; border-color: rgba(242, 178, 27, 0.42); }
.tag-jade { background: rgba(47, 169, 140, 0.15); color: #63D2B6; border-color: rgba(47, 169, 140, 0.42); }
.tag-clay { background: rgba(194, 102, 74, 0.16); color: #E49A80; border-color: rgba(194, 102, 74, 0.42); }
.tag-outline { background: transparent; color: var(--mist); border-color: var(--line-strong); }
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-size: 14px;
  color: rgba(245, 241, 232, 0.72);
  transition: all .25s var(--ease);
}
.pill:hover { color: var(--paper); border-color: var(--paper); }
.pill[aria-pressed="true"] {
  background: rgba(47, 169, 140, 0.16);
  border-color: var(--jade);
  color: #7FE0C6;
}

/* ---------- 8. 面板 / 分割 / 引用 / 列表 ---------- */
.panel {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 34px);
}
.panel--flat { background: transparent; border-color: transparent; padding-inline: 0; }
.section--paper .panel { background: #FFFFFF; border-color: var(--paper-line); }
.rule { height: 1px; background: var(--line); border: 0; }
.slash-divider {
  height: 10px;
  background: linear-gradient(90deg, var(--red) 0 26%, var(--yellow) 26% 52%, var(--jade) 52% 74%, var(--stone) 74% 100%);
  transform: skewX(-30deg);
  transform-origin: left center;
  border-radius: 2px;
  opacity: .9;
}
.quote-block {
  border-left: 3px solid var(--clay);
  padding: 8px 0 8px 22px;
  font-size: 17px;
  color: rgba(245, 241, 232, 0.86);
}
.index-list { display: flex; flex-direction: column; }
.index-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  align-items: baseline;
  padding: 18px 4px;
  border-top: 1px solid var(--line);
  transition: padding-left .3s var(--ease), background-color .3s var(--ease);
}
.index-item:hover { padding-left: 14px; background: rgba(245, 241, 232, 0.04); }
.index-num { font-family: var(--font-mono); font-style: italic; font-size: 14px; color: var(--yellow); }
.index-item h3 { font-size: 19px; margin-bottom: 4px; }
.index-item p { color: var(--mist); font-size: 14.5px; }

/* ---------- 9. 数据行 ---------- */
.data-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.data-key { font-size: 14px; color: var(--mist); }
.data-val { font-family: var(--font-mono); font-style: italic; font-size: 17px; font-weight: 700; }

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs { padding: 18px 0 4px; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; color: var(--mist); }
.breadcrumbs li + li::before { content: "／"; color: var(--stone); }
.breadcrumbs a { color: var(--mist); border-bottom: 1px solid transparent; }
.breadcrumbs a:hover { color: var(--jade); border-bottom-color: var(--jade); }
.section--paper .breadcrumbs li { color: #5A6472; }

/* ---------- 11. 图片容器（页面阶段放图占位） ---------- */
.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #1B3149 0%, #0B1726 100%);
  isolation: isolate;
}
.image-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(135deg, rgba(226, 59, 46, 0.22), rgba(11, 23, 38, 0) 46%),
    repeating-linear-gradient(115deg, rgba(245, 241, 232, 0.055) 0 12px, rgba(245, 241, 232, 0) 12px 34px);
}
.image-frame img,
.image-frame video {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity .7s var(--ease);
}
.image-frame img.is-loaded,
.image-frame img[data-loaded] { opacity: 1; }
.image-frame--21x9 { aspect-ratio: 21 / 9; }
.image-frame--16x9 { aspect-ratio: 16 / 9; }
.image-frame--4x3 { aspect-ratio: 4 / 3; }
.image-frame--1x1 { aspect-ratio: 1 / 1; }
.image-frame--tilt { transform: rotate(-1.1deg); }
.image-frame__cap {
  position: absolute;
  left: 18px; bottom: 16px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(11, 23, 38, 0.78);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
}

/* ---------- 12. 显现动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- 13. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 14. 页头 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background: transparent;
  transition: background-color .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease);
}
.site-header.is-solid,
.site-header.is-nav-open {
  background: rgba(11, 23, 38, 0.95);
  box-shadow: 0 1px 0 rgba(245, 241, 232, 0.1), 0 18px 40px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
}
.site-header.is-solid .header-inner { height: 64px; }

.progress-track {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: rgba(245, 241, 232, 0.08);
}
.progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--red), var(--yellow) 55%, var(--jade));
}

.header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(16px, 3vw, 44px);
  width: min(100% - 40px, var(--shell));
  height: var(--header-h);
  margin-inline: auto;
  transition: height .35s var(--ease);
}

/* 品牌 */
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  position: relative;
  flex: none;
  width: 38px; height: 38px;
  border-radius: 11px;
  background: var(--ink-2);
  border: 1px solid var(--line-strong);
  overflow: hidden;
}
.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  width: 15px; height: 22px;
  border-radius: 3px;
}
.brand-mark::before { background: var(--red); left: 6px; top: 8px; transform: rotate(-13deg); }
.brand-mark::after { background: var(--yellow); right: 6px; top: 9px; transform: rotate(11deg); }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name { font-size: 17px; font-weight: 900; letter-spacing: -0.01em; line-height: 1.25; }
.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  line-height: 1.4;
  white-space: nowrap;
}
.brand-note {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  height: 44px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--moss);
  opacity: .85;
}

/* 主导航 */
.site-nav { display: flex; align-items: center; justify-content: center; }
.nav-list { display: flex; align-items: center; gap: 2px; }
.nav-link {
  position: relative;
  display: block;
  padding: 10px 15px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: rgba(245, 241, 232, 0.76);
  transition: color .25s var(--ease), background-color .25s var(--ease);
}
.nav-link:hover { color: var(--paper); background: rgba(245, 241, 232, 0.07); }
.nav-link[aria-current="page"] { color: var(--paper); background: rgba(245, 241, 232, 0.09); }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 4px;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--red);
  transform: translateX(-50%);
}
.nav-foot { display: none; }

/* 工具区 */
.header-utils { display: flex; align-items: center; gap: 12px; }
.version-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(245, 241, 232, 0.8);
  white-space: nowrap;
}
.version-chip::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--jade);
  box-shadow: 0 0 0 3px rgba(47, 169, 140, 0.2);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover { background: rgba(245, 241, 232, 0.08); }
.nav-toggle-bars {
  position: relative;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--paper);
  transition: background-color .2s var(--ease);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--paper);
  transition: transform .28s var(--ease);
}
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding-bottom: 34px;
  overflow: hidden;
}
.footer-accent {
  height: 9px;
  background: linear-gradient(90deg, var(--red) 0 30%, var(--yellow) 30% 58%, var(--jade) 58% 100%);
  transform: skewX(-32deg) scaleX(1.12);
  transform-origin: left center;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr .8fr .8fr 1.2fr;
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(44px, 6vw, 76px) 0 40px;
}
.footer-brand-name { font-size: 22px; font-weight: 900; letter-spacing: -0.02em; }
.footer-brand-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--jade);
  margin-top: 6px;
}
.footer-note { margin-top: 16px; font-size: 13.5px; color: var(--mist); max-width: 34ch; }
.footer-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link {
  display: inline-block;
  font-size: 14.5px;
  color: rgba(245, 241, 232, 0.72);
  border-bottom: 1px solid transparent;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}
.footer-link:hover { color: var(--paper); border-bottom-color: var(--jade); }
.contact-item { display: flex; gap: 10px; font-size: 14px; margin-bottom: 10px; }
.contact-key {
  flex: none;
  width: 42px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--moss);
  padding-top: 2px;
}
.contact-val { color: rgba(245, 241, 232, 0.82); word-break: break-all; }

.footer-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  background: var(--ink-2);
  border: 1px solid var(--line);
}
.footer-band-title {
  font-family: var(--font-mono);
  font-style: italic;
  font-size: clamp(15px, 1.6vw, 19px);
  letter-spacing: 0.04em;
  color: var(--paper);
}
.footer-band-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.footer-legal { font-size: 13px; color: var(--mist); }
.footer-mono { font-family: var(--font-mono); letter-spacing: 0.08em; color: var(--stone); }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1280px) {
  .brand-note { display: none; }
}
@media (max-width: 1100px) {
  .layout-rail { grid-template-columns: 220px minmax(0, 1fr); gap: 32px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 1023px) {
  :root { --header-h: 68px; }
  html:focus-within { scroll-behavior: auto; }
  .header-inner { grid-template-columns: minmax(0, 1fr) auto; gap: 12px; }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .version-chip { display: none; }

  .site-nav {
    position: fixed;
    left: 14px; right: 14px;
    top: calc(var(--header-h) + 10px);
    display: block;
    padding: 14px;
    border-radius: var(--radius-lg);
    background: rgba(11, 23, 38, 0.97);
    border: 1px solid var(--line);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5);
    max-height: calc(100vh - var(--header-h) - 34px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .28s var(--ease), transform .28s var(--ease), visibility .28s linear;
  }
  .site-nav[data-open] { opacity: 1; visibility: visible; transform: none; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { padding: 14px 16px; border-radius: var(--radius-md); font-size: 16px; }
  .nav-link[aria-current="page"] { background: rgba(226, 59, 46, 0.14); }
  .nav-link[aria-current="page"]::after {
    left: auto; right: 16px; top: 50%; bottom: auto;
    width: 22px; height: 2px;
    transform: translateY(-50%);
  }
  .nav-foot { display: flex; margin-top: 12px; padding-top: 14px; border-top: 1px solid var(--line); }
  .nav-foot .btn { width: 100%; }

  .layout-rail { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .rail { position: static; }
  .rail-index { flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .rail-index a { background: rgba(245, 241, 232, 0.05); }
  .rail-index a::before { display: none; }
  .rail-foot { display: none; }
}
@media (max-width: 720px) {
  body { font-size: 15.5px; }
  .container { width: min(100% - 32px, var(--shell)); }
  .header-inner { width: min(100% - 32px, var(--shell)); }
  .brand-tag { display: none; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; padding-bottom: 30px; }
  .footer-band { padding: 20px; }
  .footer-band-actions { width: 100%; }
  .footer-band-actions .btn { flex: 1 1 auto; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .index-item { grid-template-columns: 40px minmax(0, 1fr); gap: 12px; }
}

/* ---------- 17. 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .image-frame img { opacity: 1; }
  .progress-fill { transition: none; }
}