/* =========================================================
   半岛赛场 · /assets/site.css
   夜场记分牌 × 目录型内容地图 · 共享外壳与基础组件
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --c-night: #06111f;
  --c-stand: #0b1b2e;
  --c-panel: #12314f;
  --c-white: #f4f8fc;
  --c-muted: #8fa3b8;
  --c-lime: #b6ff3b;
  --c-orange: #ff7a1a;
  --c-cyan: #4de1ff;
  --c-line: #2a4058;
  --c-lime-soft: #e4ffb0;

  --font-display: 'Barlow Condensed', 'Oswald', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'IBM Plex Mono', 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --max: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --gap: clamp(16px, 2.4vw, 28px);
  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 12px;
  --dur: 180ms;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: clamp(112px, 16vw, 168px);
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd { margin: 0; }

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

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

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

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

table { border-collapse: collapse; }

/* ---------- 3. 中文排版与页面底色 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.05vw + 13px, 17px);
  line-height: 1.75;
  color: var(--c-white);
  background-color: var(--c-night);
  background-image:
    radial-gradient(120% 62% at 50% -20%, rgba(77, 225, 255, 0.13), transparent 62%),
    radial-gradient(80% 46% at 94% 4%, rgba(182, 255, 59, 0.07), transparent 62%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
}

p { max-width: 68ch; }

strong { font-weight: 700; color: var(--c-white); }

::selection { background: var(--c-lime); color: #06111f; }

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

#main-content:focus { outline: none; }

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 120;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--c-lime);
  color: #06111f;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 5. 布局基础 ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(48px, 7vw, 104px);
  border-top: 1px solid var(--c-line);
}
.section:first-of-type { border-top: 0; }

.section--tint {
  background: var(--c-stand);
  background-image: radial-gradient(80% 120% at 12% 0%, rgba(77, 225, 255, 0.08), transparent 66%);
}

.stack { display: grid; gap: var(--gap); }
.stack--tight { gap: 12px; }

.grid { display: grid; gap: var(--gap); }

.divider { height: 1px; background: var(--c-line); border: 0; }

@media (min-width: 900px) {
  .grid--7-5 { grid-template-columns: 7fr 5fr; }
  .grid--8-4 { grid-template-columns: 8fr 4fr; }
  .grid--3-9 { grid-template-columns: 3fr 9fr; }
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 6. 文字层级 ---------- */
.u-display {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: 0.01em;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--c-white);
}

.lede {
  font-size: clamp(16px, 0.5vw + 14px, 18px);
  line-height: 1.78;
  color: #c9d6e4;
  max-width: 60ch;
}

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

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.kicker__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 0 3px rgba(182, 255, 59, 0.16);
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
  transition:
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.btn--primary {
  background: var(--c-lime);
  color: #06111f;
}
.btn--primary:hover {
  background: var(--c-lime-soft);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--c-line);
  color: var(--c-white);
  background: rgba(244, 248, 252, 0.02);
}
.btn--ghost:hover {
  border-color: var(--c-lime);
  color: var(--c-lime);
}

.btn--sm {
  padding: 10px 18px;
  font-size: 13px;
}

.btn__arrow {
  font-family: var(--font-mono);
  font-size: 0.95em;
  transition: transform var(--dur) var(--ease);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ---------- 8. 头部：居中刊头 + 编号栏目 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(6, 17, 31, 0.92);
  border-bottom: 1px solid var(--c-line);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(77, 225, 255, 0.55), rgba(182, 255, 59, 0.4), transparent);
  pointer-events: none;
}

.site-header__masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  max-width: var(--max);
  margin-inline: auto;
  padding: 18px var(--gutter) 16px;
  transition: padding var(--dur) var(--ease);
}

.header-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  max-width: none;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}
.header-meta__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-orange);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.16);
}

.brand {
  display: grid;
  gap: 6px;
  justify-items: center;
  text-align: center;
  justify-self: center;
}
.brand__word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1;
  letter-spacing: 0.16em;
  color: var(--c-white);
  transition: color var(--dur) var(--ease), font-size var(--dur) var(--ease);
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--c-muted);
}
.brand:hover .brand__word { color: var(--c-lime-soft); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-self: end;
}

.header-version {
  padding: 4px 11px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}

.site-header[data-scrolled="true"] .site-header__masthead { padding-block: 10px 8px; }
.site-header[data-scrolled="true"] .brand__word { font-size: clamp(20px, 2.2vw, 26px); }

/* 导航条 */
.site-header__navwrap { border-top: 1px solid rgba(42, 64, 88, 0.75); }

.site-nav { display: block; }

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 2px;
  max-width: var(--max);
  margin-inline: auto;
  padding: 6px var(--gutter);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 999px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: rgba(244, 248, 252, 0.78);
  transition:
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: rgba(143, 163, 184, 0.7);
  transition: color var(--dur) var(--ease);
}

.site-nav__link:hover {
  color: var(--c-white);
  background: rgba(182, 255, 59, 0.09);
}
.site-nav__link:hover .site-nav__num { color: var(--c-lime); }

.site-nav__link[aria-current="page"] {
  background: var(--c-lime);
  color: #06111f;
}
.site-nav__link[aria-current="page"] .site-nav__num { color: rgba(6, 17, 31, 0.55); }
.site-nav__link[aria-current="page"]:hover { background: var(--c-lime-soft); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  justify-self: end;
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--c-lime); background: rgba(182, 255, 59, 0.08); }

.nav-toggle__box {
  display: grid;
  gap: 4px;
  width: 16px;
}
.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--c-lime);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 9. 页脚：看台下层 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--c-stand);
  border-top: 1px solid var(--c-line);
  color: var(--c-white);
}

.site-footer__glow {
  position: absolute;
  inset: -140px -10% auto -10%;
  height: 460px;
  pointer-events: none;
  background:
    radial-gradient(58% 100% at 18% 20%, rgba(77, 225, 255, 0.16), transparent 70%),
    radial-gradient(52% 96% at 86% 0%, rgba(182, 255, 59, 0.12), transparent 72%);
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(48px, 7vw, 96px) 32px;
}

.footer-cta {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding-bottom: clamp(32px, 4.5vw, 52px);
  border-bottom: 1px solid var(--c-line);
}

.footer-cta__text { display: grid; gap: 14px; }

.footer-cta__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5.4vw, 64px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.footer-cta__summary {
  font-size: 15px;
  line-height: 1.8;
  color: #b9c9d9;
  max-width: 44ch;
}

.footer-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  padding-block: clamp(32px, 4.5vw, 52px);
}

.footer-col { display: grid; gap: 14px; align-content: start; }

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.footer-links { display: grid; gap: 2px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-block: 6px;
  font-size: 15px;
  color: #c9d6e4;
  transition: color var(--dur) var(--ease);
}
.footer-link::before {
  content: "";
  width: 14px;
  height: 1px;
  background: var(--c-line);
  transition: width var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.footer-link:hover { color: var(--c-lime); }
.footer-link:hover::before { width: 24px; background: var(--c-lime); }

.footer-contact {
  display: grid;
  gap: 14px;
}

.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.footer-contact__label {
  flex: 0 0 auto;
  min-width: 42px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}

.footer-contact__value {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-white);
  word-break: break-word;
}

.copy-btn {
  padding: 4px 12px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-muted);
  transition:
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.copy-btn:hover {
  color: #06111f;
  background: var(--c-lime-soft);
  border-color: var(--c-lime);
}
.copy-btn[data-copied] {
  color: #06111f;
  background: var(--c-lime);
  border-color: var(--c-lime);
}

.copy-feedback {
  min-height: 1.2em;
  margin-top: 6px;
  max-width: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

.footer-note {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 42ch;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px 24px;
  padding-top: 24px;
  border-top: 1px solid var(--c-line);
}

.footer-bottom__item {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  max-width: none;
}
.footer-bottom__item--mono { color: rgba(143, 163, 184, 0.7); }

/* ---------- 10. 面包屑 ---------- */
.breadcrumb { padding-block: 18px 0; }

.breadcrumb__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(--c-muted);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__item[aria-current="page"] { color: var(--c-white); }

.breadcrumb__link {
  color: var(--c-muted);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumb__link:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }

.breadcrumb__sep { color: var(--c-line); }

/* ---------- 11. 标签 / 胶囊 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(244, 248, 252, 0.03);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.pill--live { background: var(--c-orange); border-color: var(--c-orange); color: #06111f; }
.pill--ok { background: var(--c-lime); border-color: var(--c-lime); color: #06111f; }
.pill--info { background: rgba(77, 225, 255, 0.1); border-color: rgba(77, 225, 255, 0.5); color: var(--c-cyan); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: rgba(244, 248, 252, 0.02);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  cursor: pointer;
  transition:
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.tag:hover,
.tag[aria-pressed="true"],
.tag.is-active {
  color: #06111f;
  background: var(--c-lime-soft);
  border-color: var(--c-lime);
}

/* ---------- 12. 面板与数据 ---------- */
.panel {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: var(--c-panel);
}

.stat { display: grid; gap: 4px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--c-white);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.stat--alert .stat__value { color: var(--c-orange); }

.scroll-x {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  background: var(--c-night);
}
.data-table caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.data-table th {
  padding: 11px 14px;
  background: var(--c-panel);
  border-bottom: 1px solid var(--c-line);
  text-align: left;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-muted);
  white-space: nowrap;
}
.data-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-white);
  white-space: nowrap;
}
.data-table tbody tr { transition: background-color var(--dur) var(--ease); }
.data-table tbody tr:hover { background: rgba(77, 225, 255, 0.06); }
.data-table tbody tr:hover td:first-child { box-shadow: inset 2px 0 0 var(--c-orange); }
.data-table tbody tr:last-child td { border-bottom: 0; }

/* 记分条 */
.rail {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--c-line) transparent;
  padding-bottom: 8px;
}
.rail > * { flex: 0 0 auto; scroll-snap-align: start; }
.rail::-webkit-scrollbar { height: 4px; }
.rail::-webkit-scrollbar-track { background: transparent; }
.rail::-webkit-scrollbar-thumb { background: var(--c-line); border-radius: 999px; }

/* ---------- 13. 图片容器基础 ---------- */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border-radius: var(--r-lg);
  background:
    linear-gradient(152deg, #12314f 0%, #0b1b2e 58%, #06111f 100%);
}
.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(77, 225, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 225, 255, 0.16) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  opacity: 0.6;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--soft { border-radius: var(--r-md); }

.media__caption {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 3;
  padding: 16px 20px;
  background: linear-gradient(0deg, rgba(6, 17, 31, 0.9), transparent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #c9d6e4;
}

.media-grid {
  display: grid;
  gap: var(--gap);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .media-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .media-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 14. 滚动进度条（JS 注入） ---------- */
.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  height: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.site-progress[data-visible="true"] { opacity: 1; }

.site-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-lime) 55%, var(--c-orange));
  transition: transform 90ms linear;
}

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1080px) {
  .header-version { display: none; }
}

@media (max-width: 899px) {
  .site-header__masthead {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px var(--gutter);
  }
  .header-meta { display: none; }
  .header-actions { display: none; }
  .brand { justify-self: start; justify-items: start; text-align: left; }
  .brand__sub { letter-spacing: 0.2em; }

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

  .site-header__navwrap { border-top: 0; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
    background: var(--c-stand);
    border-top: 1px solid var(--c-line);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.55);
  }
  .site-nav[data-open] { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px var(--gutter) 24px;
  }
  .site-nav__link {
    justify-content: flex-start;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 16px;
  }
  .site-nav__num { font-size: 11px; }
}

@media (min-width: 600px) and (max-width: 899px) {
  .site-header__masthead { grid-template-columns: minmax(0, 1fr) auto auto; }
  .header-actions { display: flex; gap: 10px; }
}

@media (min-width: 640px) {
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .footer-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
  .footer-cta .btn { justify-self: end; }
}

@media (min-width: 980px) {
  .footer-cols { grid-template-columns: 1.05fr 0.8fr 1.35fr; }
}

@media (max-width: 559px) {
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .btn { padding: 13px 20px; }
}

/* ---------- 16. 降低动效 ---------- */
@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;
  }
  .site-progress__bar { transition: none; }
  .btn:hover { transform: none; }
  .btn:hover .btn__arrow { transform: none; }
}