/* ==========================================================================
   b体育看台 · /assets/site.css
   共享外壳：重置 / 变量 / 头部 / 页脚 / 基础组件
   视觉母题：海口夜赛转播厅 · 霓虹青战术板 · 精密直角网格
   ========================================================================== */

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

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

body, h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd, pre { margin: 0; }
ul[class], ol[class] { list-style: none; padding: 0; }
img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩令牌 */
  --c-deep:   #061A2E;  /* 深海夜蓝 · 主背景 */
  --c-trench: #03101E;  /* 海沟蓝 · 浮层与页脚 */
  --c-steel:  #0E2C48;  /* 钢蓝面板 */
  --c-cyan:   #35F0D8;  /* 霓虹青 · 品牌锚点 */
  --c-coral:  #FF6B4A;  /* 珊瑚橙 · 停赛警示 */
  --c-amber:  #FFD166;  /* 警示黄 · 累计黄牌风险 */
  --c-paper:  #F2F5F6;  /* 纸白分区 */
  --c-mist:   #8FA3B0;  /* 雾灰注释 */
  --c-grid:   #123B57;  /* 网格线青蓝 */
  --c-ink:    #F4F7F8;  /* 暖白正文 */

  --ink:      var(--c-ink);
  --ink-dim:  #C7D6DE;
  --ink-mute: var(--c-mist);
  --ink-dark: #0A2237;

  /* 字体令牌 */
  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Inter, system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* 度量令牌 */
  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 44px);
  --col-gap: 24px;
  --rule: 1px solid var(--c-grid);
  --ease: cubic-bezier(.2, .7, .3, 1);
  --stick: 0;
}

/* ---------- 3. 基础排版 ---------- */
body {
  background: var(--c-deep);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { line-height: 1.24; font-weight: 700; }
h1 { font-family: var(--font-display); font-size: clamp(30px, 4.4vw, 54px); font-weight: 800; letter-spacing: .01em; }
h2 { font-family: var(--font-display); font-size: clamp(24px, 3vw, 36px); font-weight: 800; }
h3 { font-family: var(--font-body); font-size: clamp(19px, 2vw, 22px); font-weight: 700; }
h4 { font-family: var(--font-body); font-size: 17px; font-weight: 700; }

p { margin: 0 0 1em; }
small { font-size: 13px; }

a { color: var(--c-cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }

:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

#main-content { scroll-margin-top: 170px; }

::selection { background: var(--c-cyan); color: var(--c-trench); }

/* ---------- 4. 头部 · 居中刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--c-trench);
  border-bottom: var(--rule);
  border-top: 2px solid var(--c-cyan);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .16;
  pointer-events: none;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -160%);
  z-index: 90;
  background: var(--c-cyan);
  color: var(--c-trench);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  padding: 10px 18px;
  text-decoration: none;
  transition: transform .18s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); text-decoration: none; }
.skip-link:focus:not(:focus-visible) { transform: translate(-50%, 0); }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: var(--c-cyan);
  z-index: 6;
  pointer-events: none;
}

.masthead-shell {
  position: relative;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 12px var(--gutter) 0;
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  transition: padding .24s var(--ease);
}

.masthead-tagline {
  justify-self: start;
  align-self: center;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--c-mist);
  white-space: nowrap;
  transition: opacity .22s var(--ease);
}

.brand-mark {
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  text-decoration: none;
  padding: 0 10px;
}
.brand-mark:hover { text-decoration: none; }

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 58px);
  line-height: 1;
  letter-spacing: .07em;
  color: var(--c-ink);
  transition: font-size .24s var(--ease);
}

.brand-domain {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--c-cyan);
  text-transform: lowercase;
}

.masthead-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.pulse-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-mist);
  white-space: nowrap;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 216, .18);
  animation: badge-pulse 2.8s var(--ease) infinite;
}

@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .34; }
}

.anchor-cta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  padding: 8px 16px;
  border: 1px solid var(--c-cyan);
  color: var(--c-cyan);
  white-space: nowrap;
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease);
}
.anchor-cta:hover { background: var(--c-cyan); color: var(--c-trench); text-decoration: none; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: var(--rule);
  color: var(--c-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.nav-toggle:hover { border-color: var(--c-cyan); color: var(--c-cyan); }

.nav-toggle-bars {
  display: block;
  position: relative;
  width: 18px;
  height: 12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s var(--ease), top .2s var(--ease);
}
.nav-toggle-bars::before { top: 2px; }
.nav-toggle-bars::after { top: 9px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { top: 5.5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { top: 5.5px; transform: rotate(-45deg); }

.nav-toggle-text { line-height: 1; }

/* 导航 */
.site-nav {
  position: relative;
  border-top: var(--rule);
}

.nav-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.nav-list li {
  border-left: var(--rule);
}
.nav-list li:last-child { border-right: var(--rule); }

.nav-list a {
  position: relative;
  display: block;
  padding: 13px 22px;
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color .18s var(--ease), background .18s var(--ease);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--c-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease);
}
.nav-list a:hover { color: var(--c-ink); background: rgba(53, 240, 216, .07); text-decoration: none; }
.nav-list a:hover::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--c-cyan); }
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }

/* 滚动压缩态 */
.site-header[data-stuck="true"] .masthead { padding-bottom: 4px; }
.site-header[data-stuck="true"] .brand-name { font-size: clamp(20px, 2.4vw, 30px); }
.site-header[data-stuck="true"] .masthead-tagline { opacity: 0; }
.site-header[data-stuck="true"] .brand-domain { letter-spacing: .24em; }

@keyframes nav-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 5. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--c-trench);
  border-top: var(--rule);
  color: var(--ink-dim);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--c-cyan) 0%, var(--c-cyan) 34%, var(--c-grid) 34%, var(--c-grid) 82%, var(--c-coral) 82%, var(--c-coral) 100%);
  opacity: .85;
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(40px, 5vw, 76px) var(--gutter) 34px;
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr) 1.25fr;
  gap: clamp(22px, 3vw, 42px);
}

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

.footer-logo {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--c-ink);
  text-decoration: none;
}
.footer-logo:hover { text-decoration: none; color: var(--c-cyan); }

.footer-tagline {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--c-cyan);
}

.footer-note {
  margin: 16px 0 0;
  max-width: 30ch;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--c-mist);
}

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

.footer-col-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--c-cyan);
}

.footer-list { display: flex; flex-direction: column; gap: 10px; }
.footer-list a {
  display: inline-block;
  font-size: 15px;
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.footer-list a:hover { color: var(--c-ink); border-bottom-color: var(--c-cyan); text-decoration: none; }

.footer-contact-text {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  word-break: break-all;
}

.footer-hint {
  margin: 14px 0 0;
  font-size: 13px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--c-mist);
}

.footer-base {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 22px var(--gutter) 44px;
  border-top: var(--rule);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 30px;
  font-size: 13px;
  font-weight: 300;
  color: var(--c-mist);
}
.footer-base p { margin: 0; }
.footer-legal { flex: 1 1 380px; }
.footer-closing { flex: 1 1 300px; }
.footer-copy { font-family: var(--font-mono); letter-spacing: .08em; white-space: nowrap; }

/* ---------- 6. 布局骨架 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--col-gap);
}

.col-main { grid-column: span 8; min-width: 0; }
.col-side { grid-column: span 4; min-width: 0; }
.col-full { grid-column: 1 / -1; min-width: 0; }

/* ---------- 7. 面板与文字层级 ---------- */
.panel {
  position: relative;
  background: var(--c-steel);
  border: var(--rule);
  padding: clamp(22px, 3.2vw, 46px);
}
.panel--trench { background: var(--c-trench); }
.panel--paper { background: var(--c-paper); color: var(--ink-dark); border-color: #C9D6DC; }
.panel--paper .note,
.panel--paper .prose { color: #3C5566; }

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 14px;
  margin-bottom: 22px;
  border-bottom: var(--rule);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--c-cyan);
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: .01em;
  margin-bottom: .55em;
}

.lede {
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 60ch;
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-dim);
}
.prose p { margin: 0 0 1.1em; }
.prose h3, .prose h4 { margin: 1.4em 0 .5em; color: var(--c-ink); }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.3em; }
.prose li { margin-bottom: .4em; }
.prose strong { color: var(--c-ink); }
.prose code {
  font-family: var(--font-mono);
  font-size: .92em;
  color: var(--c-cyan);
}
.prose blockquote {
  border-left: 2px solid var(--c-cyan);
  padding-left: 18px;
  color: var(--ink-dim);
}

.note {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.72;
  color: var(--c-mist);
}
.note strong { color: var(--ink-dim); font-weight: 500; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

/* ---------- 8. 数字条 ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border-top: var(--rule);
  border-left: var(--rule);
}

.stat {
  border-right: var(--rule);
  border-bottom: var(--rule);
  padding: 20px 18px;
}

.metric,
.stat-value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--c-cyan);
}

.stat-value--warn { color: var(--c-coral); }
.stat-value--caution { color: var(--c-amber); }

.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 300;
  letter-spacing: .06em;
  color: var(--c-mist);
}

/* ---------- 9. 按钮与筛选 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  padding: 11px 22px;
  border: 1px solid var(--c-cyan);
  background: transparent;
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  line-height: 1.4;
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.btn:hover { background: var(--c-cyan); color: var(--c-trench); text-decoration: none; }

.btn--solid { background: var(--c-cyan); color: var(--c-trench); }
.btn--solid:hover { background: transparent; color: var(--c-cyan); }

.btn--warn { border-color: var(--c-coral); color: var(--c-coral); }
.btn--warn:hover { background: var(--c-coral); color: var(--c-trench); }

.btn--ghost { border-color: var(--c-grid); color: var(--ink-dim); }
.btn--ghost:hover { background: var(--c-steel); color: var(--c-ink); border-color: var(--c-ink-dim); }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 16px 0;
  border-bottom: var(--rule);
}

.chip {
  padding: 8px 15px;
  border: var(--rule);
  background: transparent;
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  transition: border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease);
}
.chip:hover { border-color: var(--c-cyan); color: var(--c-cyan); }
.chip[aria-pressed="true"] {
  border-color: var(--c-cyan);
  background: rgba(53, 240, 216, .1);
  color: var(--c-cyan);
}

/* ---------- 10. 面包屑 / 提示块 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-mist);
  padding: 14px 0;
}
.breadcrumb a { color: var(--ink-dim); }
.breadcrumb a:hover { color: var(--c-cyan); text-decoration: none; }
.breadcrumb span[aria-current="page"] { color: var(--c-cyan); }

.callout {
  position: relative;
  border: var(--rule);
  border-left: 3px solid var(--c-cyan);
  background: var(--c-trench);
  padding: 18px 22px;
}
.callout--warn { border-left-color: var(--c-coral); }
.callout--info { border-left-color: var(--c-cyan); }
.callout-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-cyan);
  margin-bottom: 8px;
}
.callout--warn .callout-title { color: var(--c-coral); }

/* ---------- 11. 时间轴骨架 ---------- */
.timeline {
  position: relative;
  padding-left: 26px;
  border-left: 1px solid var(--c-grid);
}

.timeline-item {
  position: relative;
  padding: 0 0 30px 20px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-node {
  position: absolute;
  left: -31px;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--c-deep);
  border: 1px solid var(--c-grid);
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.timeline-item:hover .timeline-node,
.timeline-node[aria-current="true"] {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 216, .16);
}
.timeline-node--warn { border-color: var(--c-coral); }
.timeline-item:hover .timeline-node--warn,
.timeline-node--warn[aria-current="true"] {
  background: var(--c-coral);
  border-color: var(--c-coral);
  box-shadow: 0 0 0 3px rgba(255, 107, 74, .18);
}

/* ---------- 12. 锚点导轨 ---------- */
.anchor-rail {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: none;
  flex-direction: column;
  gap: 12px;
  padding: 14px 10px;
  background: rgba(3, 16, 30, .78);
  border: var(--rule);
}
.anchor-rail a {
  display: block;
  width: 10px;
  height: 10px;
  border: 1px solid var(--c-grid);
  transition: background .18s var(--ease), border-color .18s var(--ease);
}
.anchor-rail a:hover { border-color: var(--c-cyan); }
.anchor-rail a[aria-current="true"] { background: var(--c-cyan); border-color: var(--c-cyan); }

/* ---------- 13. 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--c-trench);
  border: var(--rule);
  aspect-ratio: 16 / 9;
  width: 100%;
}
.media > img,
.media > picture,
.media > picture > img,
.media > svg,
.media > video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .5;
}

.media-caption {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 14. 动效协议 ---------- */
[data-reveal] {
  transition: opacity .42s var(--ease), transform .42s var(--ease);
}
[data-reveal][data-reveal-init="true"] {
  opacity: 0;
  transform: translateY(22px);
}
[data-reveal][data-visible="true"] {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-inner { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .footer-note { max-width: 46ch; }
}

@media (max-width: 940px) {
  body { font-size: 16px; }

  .masthead {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 4px 0 10px;
  }
  .masthead-tagline { display: none; }
  .brand-mark { justify-self: start; align-items: flex-start; padding: 0; }
  .brand-domain { letter-spacing: .2em; }
  .masthead-actions { gap: 8px; }
  .pulse-badge { display: none; }

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

  .site-nav {
    display: none;
    border-top: var(--rule);
  }
  .site-nav[data-open="true"] {
    display: block;
    animation: nav-in .22s var(--ease);
  }
  .nav-list { flex-direction: column; flex-wrap: nowrap; }
  .nav-list li { border-left: 0; border-top: var(--rule); }
  .nav-list li:last-child { border-right: 0; border-bottom: var(--rule); }
  .nav-list a { padding: 15px 4px; font-size: 16px; }
  .nav-list a::after { left: 0; right: auto; width: 34px; }

  .grid-12 { gap: 18px; }
  .col-main, .col-side { grid-column: 1 / -1; }

  .site-header[data-stuck="true"] .masthead { padding: 2px 0 4px; }
}

@media (min-width: 941px) {
  .site-nav { display: block !important; }
}

@media (min-width: 1500px) {
  .anchor-rail { display: flex; }
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 26px 20px; }
  .footer-col-contact { grid-column: 1 / -1; }
  .footer-base { flex-direction: column; }
  .footer-copy { white-space: normal; }
}

@media (max-width: 460px) {
  .footer-inner { grid-template-columns: 1fr; }
  .stat-strip { grid-template-columns: 1fr 1fr; }
  .metric, .stat-value { font-size: 26px; }
}

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

  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal],
  [data-reveal][data-reveal-init="true"] {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress { transition: none; }
}