/* ==========================================================================
   华体育网主站 · 共享样式 /assets/site.css
   设计逻辑：深海墨蓝铺底，珠宝色分区，等宽数字，坐标刻度母题，大圆角胶囊
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink: #061726;
  --zone-teal: #0C2E3A;
  --zone-indigo: #141C3F;
  --zone-wine: #4A1030;
  --cyan: #25F2D6;
  --orange: #FF8A3D;
  --porcelain: #F4F8F9;
  --mist: #9BB3C0;
  --amber: #E8C766;
  --signal: #4CD97B;

  --line: rgba(155, 179, 192, 0.22);
  --line-soft: rgba(155, 179, 192, 0.12);
  --line-cyan: rgba(37, 242, 214, 0.28);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "DejaVu Sans Mono", monospace;

  --r-xl: 36px;
  --r-lg: 24px;
  --r-md: 16px;
  --r-sm: 10px;
  --r-pill: 999px;

  --shell: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --measure: 680px;
  --header-h: 76px;

  --ease: cubic-bezier(0.22, 0.7, 0.3, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--porcelain);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { max-width: 100%; display: block; }
button { font: inherit; color: inherit; }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--porcelain); }

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

::selection { background: var(--cyan); color: #04231F; }

html.nav-open { overflow: hidden; }

/* ---------- 3. 中文排版与容器 ---------- */
.shell {
  width: min(var(--shell), 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

.prose {
  max-width: var(--measure);
  color: rgba(244, 248, 249, 0.86);
  font-size: 16px;
  line-height: 1.75;
}

.prose p + p { margin-top: 1em; }
.prose h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.25; letter-spacing: -0.01em; margin: 1.6em 0 0.5em; }
.prose h3 { font-size: clamp(20px, 2.2vw, 24px); line-height: 1.35; margin: 1.4em 0 0.4em; }
.prose strong { color: var(--porcelain); }

.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 9vw, 132px);
  line-height: 0.94;
  letter-spacing: -0.02em;
  margin: 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
  opacity: 0.75;
}

.annotation {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mist);
  writing-mode: vertical-rl;
  text-transform: uppercase;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 跳至主内容 ---------- */
.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  background: var(--cyan);
  color: #04231F;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-220%);
  transition: transform 0.22s var(--ease);
}

.skip-link:focus { transform: translateY(0); color: #04231F; }

/* ---------- 5. 头部 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  color: var(--porcelain);
  background: transparent;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(6, 23, 38, 0.9);
  border-bottom: 1px solid var(--line-cyan);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  transition: opacity 0.28s var(--ease);
}

.site-header.is-solid::before { opacity: 1; }

.header-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  opacity: 0;
  transition: opacity 0.24s var(--ease);
}

.header-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(14px, 2vw, 36px);
  min-height: var(--header-h);
  padding-block: 12px;
  position: relative;
  z-index: 2;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--porcelain);
  text-decoration: none;
  position: relative;
  z-index: 3;
}

.brand-mark {
  position: relative;
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: linear-gradient(140deg, var(--cyan), #0F8F86);
  box-shadow: 0 0 0 1px rgba(37, 242, 214, 0.35);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background: #04231F;
  transform: rotate(-28deg);
}

.brand-mark--lg { width: 44px; height: 44px; border-radius: 14px; }

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

.brand-name { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; }

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mist);
  text-transform: uppercase;
}

/* 导航 */
.site-nav { justify-self: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.4vw, 24px);
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 2px;
  color: var(--mist);
  font-size: 14px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  color: rgba(155, 179, 192, 0.6);
  transition: color 0.2s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.24s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible { color: var(--porcelain); }
.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--porcelain); font-weight: 600; }
.nav-link[aria-current="page"]::after { transform: scaleX(1); background: var(--orange); }
.nav-link[aria-current="page"] .nav-index { color: var(--cyan); }

.nav-panel-foot { display: none; }

/* 快捷区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.2vw, 18px);
  position: relative;
  z-index: 3;
}

.quick-search {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 12px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-pill);
  background: rgba(20, 28, 63, 0.55);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}

.quick-search:hover,
.quick-search:focus-visible {
  border-color: var(--cyan);
  background: rgba(20, 28, 63, 0.9);
  color: var(--porcelain);
}

.quick-search-icon {
  position: relative;
  flex: none;
  width: 13px;
  height: 13px;
  border: 1.5px solid var(--cyan);
  border-radius: 50%;
}

.quick-search-icon::after {
  content: "";
  position: absolute;
  right: -4px;
  bottom: -3px;
  width: 7px;
  height: 1.5px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.quick-search-hint { letter-spacing: 0.02em; }

.quick-search-scope {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.utility-link {
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(37, 242, 214, 0.45);
  color: var(--porcelain);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.utility-link:hover,
.utility-link:focus-visible { color: var(--cyan); border-color: var(--cyan); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 3;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-sm);
  background: rgba(20, 28, 63, 0.6);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-line {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--porcelain);
  transition: transform 0.24s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 6. 头部响应式 ---------- */
@media (max-width: 1240px) {
  .quick-search-scope { display: none; }
}

@media (max-width: 1024px) {
  .header-shell {
    grid-template-columns: 1fr auto;
    justify-content: space-between;
  }

  .header-actions > .quick-search,
  .header-actions > .utility-link { display: none; }

  .nav-toggle { display: flex; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
    padding: calc(var(--header-h) + 28px) var(--gutter) 48px;
    background: linear-gradient(180deg, rgba(6, 23, 38, 0.99) 0%, rgba(12, 46, 58, 0.99) 100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    overflow-y: auto;
    transition: opacity 0.26s var(--ease), transform 0.26s var(--ease), visibility 0.26s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

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

  .nav-link {
    align-items: center;
    gap: 14px;
    padding: 10px 0;
    font-family: var(--font-display);
    font-size: clamp(24px, 6.4vw, 34px);
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--porcelain);
    white-space: normal;
  }

  .nav-index { font-size: 12px; color: var(--cyan); }
  .nav-link::after { display: none; }

  .nav-panel-foot {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }

  html.nav-open { overflow: hidden; }
}

@media (max-width: 560px) {
  .brand-sub { display: none; }
  .quick-search { font-size: 12px; padding-inline: 10px; }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background: var(--ink);
  color: var(--porcelain);
}

.footer-scale {
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange) 55%, rgba(155, 179, 192, 0.25) 100%);
}

.footer-shell { position: relative; }

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(44px, 6vw, 80px) 0 clamp(28px, 4vw, 48px);
}

.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.footer-tagline { font-size: 14px; color: var(--mist); max-width: 30ch; }

.footer-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-links { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.footer-links a:hover,
.footer-links a:focus-visible { color: var(--porcelain); }

.footer-contact {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 64px);
  padding: clamp(24px, 3vw, 40px) 0;
  border-top: 1px solid var(--line);
}

.footer-contact-title {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mist);
}

.contact-list { display: flex; flex-direction: column; gap: 10px; }

.contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-size: 14px;
}

.contact-key {
  flex: none;
  width: 4em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  padding-top: 3px;
}

.contact-value { color: var(--porcelain); }

.contact-value--mono { font-family: var(--font-mono); letter-spacing: 0.02em; }

.footer-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 46ch;
  padding-left: 18px;
  border-left: 2px solid var(--zone-wine);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding: 22px 0 40px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.footer-icp { color: var(--mist); }

.footer-annotation {
  color: rgba(37, 242, 214, 0.7);
  letter-spacing: 0.28em;
}

/* ---------- 8. 首屏与分区 ---------- */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + clamp(48px, 12vh, 140px)) 0 clamp(40px, 7vw, 88px);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    repeating-linear-gradient(0deg, rgba(155, 179, 192, 0.07) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(155, 179, 192, 0.07) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.section { padding: clamp(56px, 8vw, 120px) 0; }
.section--tight { padding: clamp(32px, 5vw, 64px) 0; }
.section--teal { background: var(--zone-teal); }
.section--indigo { background: var(--zone-indigo); }
.section--wine { background: var(--zone-wine); }

.theme-band {
  padding: clamp(28px, 4vw, 56px) 0;
  background: var(--zone-teal);
  border-top: 1px solid var(--line-cyan);
  border-bottom: 1px solid var(--line-cyan);
}

.theme-band--indigo { background: var(--zone-indigo); }
.theme-band--wine { background: var(--zone-wine); }

.scale-line {
  height: 10px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--mist) 0 1px, transparent 1px 32px);
  background-size: auto 6px;
  background-position: left bottom;
  background-repeat: repeat-x;
  opacity: 0.45;
}

/* ---------- 9. 网格 ---------- */
.grid { display: grid; gap: clamp(16px, 2vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.layout-aside {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

/* ---------- 10. 卡片与数字 ---------- */
.data-card {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 2.4vw, 32px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: var(--zone-indigo);
}

.data-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.metric { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px; }

.metric-value {
  font-family: var(--font-mono);
  font-size: clamp(34px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.metric-unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--mist);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--r-pill);
  background: rgba(37, 242, 214, 0.12);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 11. 索引网格 ---------- */
.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--line);
  overflow: hidden;
}

.index-item {
  display: block;
  padding: 20px;
  background: var(--ink);
  color: var(--porcelain);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.index-item:hover,
.index-item:focus-visible { background: var(--zone-indigo); color: var(--porcelain); }

/* ---------- 12. 图片容器（页面阶段放图） ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--zone-indigo), var(--zone-teal));
  border: 1px solid var(--line-soft);
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame--wide { aspect-ratio: 21 / 9; }
.img-frame--portrait { aspect-ratio: 3 / 4; }

/* ---------- 13. 面包屑 ---------- */
.breadcrumbs { padding: clamp(20px, 3vw, 32px) 0 0; }

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.breadcrumbs-item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs-item + .breadcrumbs-item::before { content: "/"; color: rgba(155, 179, 192, 0.5); }

.breadcrumbs-item a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.breadcrumbs-item a:hover,
.breadcrumbs-item a:focus-visible { color: var(--cyan); }

/* ---------- 14. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn-primary {
  background: var(--orange);
  color: #200D02;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #FFA262;
  color: #200D02;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line-cyan);
  color: var(--porcelain);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 15. 标签页 / 分段切换 ---------- */
.tabs { display: block; }

.tab-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--zone-indigo);
}

.tab {
  padding: 9px 20px;
  border: 0;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--mist);
  font-size: 14px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.tab:hover { color: var(--porcelain); }

.tab[aria-selected="true"] {
  background: var(--cyan);
  color: #04231F;
  font-weight: 600;
}

.tab-panel { display: block; padding-top: clamp(20px, 3vw, 36px); }
.tab-panel[hidden] { display: none; }

.tab-panel.is-active { animation: rise-in 0.24s var(--ease) both; }

/* ---------- 16. 动效 ---------- */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

[data-reveal].is-revealed { animation: reveal-up 0.5s var(--ease) both; }

/* ---------- 17. 响应式收束 ---------- */
@media (max-width: 900px) {
  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
  .footer-note { border-left: 0; padding-left: 0; border-top: 2px solid var(--zone-wine); padding-top: 14px; }
  .layout-aside { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  .footer-columns { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero { min-height: 66vh; }
  .metric-value { font-size: 34px; }
  .contact-key { width: 100%; padding-top: 0; }
}

/* ---------- 18. 可访问性偏好 ---------- */
@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;
  }

  [data-reveal].is-revealed { animation: none; }
}