/* ============================================================
   宝威体育赛场 · 中文站 — 共享样式表 /assets/site.css
   设计逻辑：深夜赛场大屏刷新 · 双层信息导航 · 斜向刻度网格
   深渊靛蓝打底 / 电光青做状态 / 琥珀橙抢重点 / 玻璃层托分区
   ============================================================ */

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

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #070C22;
  --ink-2: #101B46;
  --ink-3: #0B1338;
  --line: #2B3A72;
  --line-soft: rgba(43, 58, 114, .55);

  --cyan: #32E1D2;
  --cyan-soft: #A5F5EC;
  --amber: #FF9E2C;
  --amber-deep: #C66114;
  --white: #F2F6FF;
  --mist: #93A0C8;
  --mist-dim: #6E7DA8;
  --lilac: #7C5CFF;
  --lime: #7ED957;

  --glass: rgba(255, 255, 255, .06);
  --glass-2: rgba(255, 255, 255, .10);
  --glass-line: rgba(255, 255, 255, .10);

  --shell: 1220px;
  --pad: clamp(16px, 4vw, 40px);
  --gap: clamp(16px, 2.4vw, 28px);

  --r-xl: 22px;
  --r-lg: 16px;
  --r-md: 11px;
  --r-sm: 7px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --t-fast: .18s var(--ease);
  --t-mid: .3s var(--ease);

  --f-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --f-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --f-editorial: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --f-num: "Barlow Condensed", "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
}

/* ---------- 3. 页面底色与刻度纹理 ---------- */
body {
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 520px at 88% -8%, rgba(50, 225, 210, .10), transparent 62%),
    radial-gradient(760px 520px at 2% 14%, rgba(124, 92, 255, .10), transparent 60%),
    repeating-linear-gradient(115deg, rgba(43, 58, 114, .18) 0 1px, transparent 1px 68px);
  color: var(--white);
  font-family: var(--f-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
}

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-12 { grid-column: span 12; }

.section { padding-block: clamp(32px, 5vw, 68px); }
.section--tight { padding-block: clamp(20px, 3vw, 38px); }

.rule {
  position: relative;
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line), rgba(43, 58, 114, .08));
}
.rule::before {
  content: "";
  position: absolute;
  left: 0; top: -2px;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 5. 排版 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--f-num);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section-title {
  font-family: var(--f-editorial);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-title {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--white);
}

.num,
.stat__num {
  font-family: var(--f-num);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--amber);
}

.display-num {
  font-family: var(--f-num);
  font-weight: 700;
  font-size: clamp(56px, 9vw, 96px);
  line-height: .92;
  letter-spacing: -.03em;
  color: var(--amber);
}

.lede {
  max-width: 66ch;
  font-size: 17px;
  line-height: 1.55;
  color: var(--mist);
}

.prose {
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.7;
  color: #D8E0F6;
}
.prose h2,
.prose h3 {
  font-family: var(--f-editorial);
  font-weight: 700;
  color: var(--white);
  margin-top: 26px;
  margin-bottom: 10px;
}
.prose h2 { font-size: 22px; }
.prose h3 { font-size: 18px; }
.prose p + p { margin-top: 14px; }
.prose ul { margin-top: 12px; }
.prose li {
  position: relative;
  padding-left: 16px;
  margin-top: 8px;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0; top: .68em;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: var(--cyan);
}

/* ---------- 6. 层级：玻璃层 / 实色内容层 ---------- */
.glass {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--r-xl);
  backdrop-filter: blur(10px) saturate(1.15);
}
.glass--strong { background: var(--glass-2); }

.panel {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(16px, 2.2vw, 24px);
}
.panel--flat { background: var(--ink-3); }

/* ---------- 7. 数据块 / 表格 / 索引列表 ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border-left: 2px solid var(--cyan);
  background: rgba(16, 27, 70, .7);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.stat__label {
  font-family: var(--f-num);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mist-dim);
}
.stat__num { font-size: 26px; line-height: 1.05; }

.data-table {
  font-size: 14px;
  font-family: var(--f-body);
}
.data-table th {
  text-align: left;
  font-family: var(--f-num);
  font-size: 11.5px;
  letter-spacing: .12em;
  font-weight: 500;
  color: var(--mist-dim);
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line-soft);
  color: #D8E0F6;
}
.data-table tbody tr:nth-child(odd) { background: rgba(43, 58, 114, .16); }
.data-table td .num { color: var(--cyan-soft); }

.index-list {
  display: grid;
  gap: 8px;
}
.index-list__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(16, 27, 70, .55);
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}
.index-list__item:hover {
  border-color: var(--cyan);
  background: rgba(16, 27, 70, .9);
  transform: translateX(2px);
}
.index-list__num {
  flex: 0 0 auto;
  min-width: 2.4em;
  font-family: var(--f-num);
  font-weight: 700;
  font-size: 15px;
  color: var(--amber);
}

/* ---------- 8. 标签 / 按钮 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(50, 225, 210, .3);
  background: rgba(50, 225, 210, .1);
  color: var(--cyan-soft);
  font-family: var(--f-num);
  font-size: 12px;
  letter-spacing: .06em;
}
.tag--amber {
  border-color: rgba(255, 158, 44, .34);
  background: rgba(255, 158, 44, .12);
  color: #FFC680;
}
.tag--lilac {
  border-color: rgba(124, 92, 255, .34);
  background: rgba(124, 92, 255, .14);
  color: #C4B4FF;
}
.tag--lime {
  border-color: rgba(126, 217, 87, .32);
  background: rgba(126, 217, 87, .12);
  color: #C6F0B4;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--f-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}
.btn--amber {
  background: var(--amber);
  color: #1A0E00;
  box-shadow: 0 6px 20px rgba(255, 158, 44, .22);
}
.btn--amber:hover {
  background: #FFB455;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 158, 44, .3);
}
.btn--cyan {
  background: var(--cyan);
  color: #04121A;
  box-shadow: 0 6px 20px rgba(50, 225, 210, .2);
}
.btn--cyan:hover { background: var(--cyan-soft); transform: translateY(-2px); }
.btn--ghost {
  background: var(--glass);
  border-color: var(--line);
  color: var(--white);
}
.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan-soft);
  transform: translateY(-2px);
}
.btn--sm { padding: 8px 14px; font-size: 13px; }

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist-dim);
}
.breadcrumbs a { color: var(--mist); transition: color var(--t-fast); }
.breadcrumbs a:hover { color: var(--cyan-soft); }
.breadcrumbs__sep { color: var(--line); }

/* ---------- 10. 主题筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.filter-btn {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--mist);
  font-family: var(--f-num);
  font-size: 13px;
  letter-spacing: .06em;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.filter-btn:hover { color: var(--white); border-color: var(--cyan); }
.filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04121A;
  font-weight: 700;
}
.filter-count {
  margin-left: auto;
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--mist-dim);
}
.filter-count .num { color: var(--cyan-soft); }
.filter-empty {
  padding: 20px;
  border: 1px dashed var(--line);
  border-radius: var(--r-lg);
  color: var(--mist);
  font-size: 14px;
  text-align: center;
}

/* ---------- 11. 图片容器（供页面阶段放置图片） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(140deg, rgba(50, 225, 210, .14), transparent 52%),
    linear-gradient(320deg, rgba(255, 158, 44, .16), transparent 58%),
    var(--ink-2);
}
.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(115deg, rgba(242, 246, 255, .05) 0 1px, transparent 1px 26px);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--cut { clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%); }
.media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  background: rgba(7, 12, 34, .82);
  color: var(--cyan-soft);
  font-family: var(--f-num);
  font-size: 12px;
  letter-spacing: .06em;
}

/* ---------- 12. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 200;
  padding: 10px 16px;
  border-radius: 0 0 10px 10px;
  background: var(--cyan);
  color: #04121A;
  font-weight: 700;
  transition: top var(--t-fast);
}
.skip-link:focus { top: 0; }

/* ---------- 13. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(7, 12, 34, .97), rgba(7, 12, 34, .9));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(1.2);
}

.header-utility {
  max-height: 72px;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  transition: max-height var(--t-mid), opacity var(--t-mid);
}
.header-utility__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding-block: 10px;
}
.header-brandline {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .02em;
}
.brandline__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(50, 225, 210, .16);
}
.brandline__text {
  font-family: var(--f-display);
  font-weight: 700;
  color: var(--white);
}
.brandline__tag {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .08em;
}
.header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .06em;
}
.header-meta__item { display: inline-flex; align-items: center; gap: 8px; }
.header-meta__key { color: var(--mist-dim); }
.header-meta__val { color: var(--white); font-weight: 500; }

.header-status {
  max-height: 52px;
  overflow: hidden;
  background: linear-gradient(90deg, rgba(50, 225, 210, .12), rgba(255, 158, 44, .08) 58%, transparent);
  border-bottom: 1px solid var(--line-soft);
  transition: max-height var(--t-mid), opacity var(--t-mid);
}
.header-status__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  min-height: 38px;
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mist);
}
.status-item { display: inline-flex; align-items: baseline; gap: 8px; }
.status-item__key { color: var(--mist-dim); }
.status-item__val { color: var(--white); font-weight: 700; }
.status-item__val--amber { color: var(--amber); font-size: 17px; }
.status-item__unit { color: var(--mist-dim); }
.status-pulse {
  align-self: center;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(50, 225, 210, .18);
}
.status-item__val.is-flash { animation: flashPulse .34s var(--ease); }
@keyframes flashPulse {
  0% { color: var(--cyan-soft); text-shadow: 0 0 14px rgba(50, 225, 210, .8); }
  100% { color: inherit; text-shadow: none; }
}

.header-nav {
  position: relative;
  background: rgba(7, 12, 34, .55);
}
.header-nav__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: 66px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}
.brand-lockup__glyph {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(140deg, var(--cyan), #1B8F9E 72%);
  color: #031418;
  font-family: var(--f-num);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .02em;
  box-shadow: 0 0 0 1px rgba(50, 225, 210, .35), 0 8px 20px rgba(50, 225, 210, .18);
  transition: transform var(--t-fast);
}
.brand-lockup:hover .brand-lockup__glyph { transform: translateY(-2px); }
.brand-lockup__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-lockup__name {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -.02em;
  color: var(--white);
}
.brand-lockup__sub {
  font-family: var(--f-num);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist-dim);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  transition: border-color var(--t-fast), color var(--t-fast);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan-soft); }
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 20px);
  margin-left: auto;
}
.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  color: var(--mist);
  font-size: 14.5px;
  font-weight: 500;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}
.nav-link__index {
  font-family: var(--f-num);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist-dim);
  transition: color var(--t-fast);
}
.nav-link:hover {
  color: var(--white);
  background: var(--glass);
  border-color: var(--line);
}
.nav-link:hover .nav-link__index { color: var(--cyan); }
.nav-link[aria-current="page"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04121A;
  font-weight: 700;
}
.nav-link[aria-current="page"] .nav-link__index { color: rgba(4, 18, 26, .58); }

.header-cta { flex: 0 0 auto; }

.site-header[data-condensed] .header-utility,
.site-header[data-condensed] .header-status {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}

.progress-rail {
  position: relative;
  height: 2px;
  background: rgba(43, 58, 114, .65);
  overflow: hidden;
}
.progress-rail__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

/* ---------- 14. 复制按钮 ---------- */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(50, 225, 210, .07);
  color: var(--white);
  font-family: var(--f-num);
  font-size: 12px;
  letter-spacing: .04em;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}
.copy-btn:hover { border-color: var(--cyan); color: var(--cyan-soft); background: rgba(50, 225, 210, .14); }
.copy-btn__text { white-space: nowrap; }
.copy-btn__hint { color: var(--cyan); font-size: 11px; letter-spacing: .08em; }
.copy-btn[data-copied] .copy-btn__hint { color: var(--amber); }

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(44px, 7vw, 96px);
  background: linear-gradient(180deg, rgba(16, 27, 70, .55), rgba(7, 12, 34, .98) 46%, var(--ink));
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(680px 300px at 82% 0%, rgba(50, 225, 210, .12), transparent 66%),
    repeating-linear-gradient(115deg, rgba(43, 58, 114, .2) 0 1px, transparent 1px 72px);
}
.footer-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, 1.05fr) minmax(0, 2.4fr);
  gap: clamp(24px, 4vw, 54px);
  padding-block: clamp(34px, 5vw, 64px) clamp(26px, 3vw, 44px);
}

.footer-brand { display: grid; align-content: start; gap: 14px; }
.brand-lockup--footer .brand-lockup__name { font-size: 17px; }
.footer-brand__note {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--mist);
  max-width: 34ch;
}
.footer-contact { display: grid; gap: 10px; }
.footer-contact__item { display: grid; gap: 4px; }
.footer-contact__key {
  font-family: var(--f-num);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist-dim);
}
.footer-brand__stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}
.footer-brand__num {
  font-family: var(--f-num);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  color: var(--amber);
}
.footer-brand__unit {
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mist-dim);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 28px);
}
.footer-col { display: grid; align-content: start; gap: 10px; }
.footer-col__title {
  font-family: var(--f-editorial);
  font-weight: 700;
  font-size: 16.5px;
  letter-spacing: -.01em;
  color: var(--white);
}
.footer-col__list { display: grid; gap: 2px; }
.footer-col__list a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mist);
  transition: color var(--t-fast), transform var(--t-fast);
}
.footer-col__list a:hover {
  color: var(--cyan-soft);
  transform: translateX(2px);
}
.footer-col__note {
  padding-left: 10px;
  border-left: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mist-dim);
}

.footer-legal {
  position: relative;
  border-top: 1px solid var(--line);
  background: rgba(7, 12, 34, .72);
}
.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 16px;
  font-family: var(--f-num);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}
.footer-legal__line { max-width: 92ch; }
.footer-legal__copy { color: var(--mist-dim); }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-brand__note { max-width: 56ch; }
}

@media (max-width: 900px) {
  .header-utility { max-height: 120px; }
  .header-meta { gap: 6px 16px; }

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

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 55;
    display: grid;
    gap: 12px;
    margin-left: 0;
    padding: 14px var(--pad) 22px;
    background: #080E27;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 22px 40px rgba(3, 6, 20, .55);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-list { display: grid; gap: 4px; }
  .nav-link {
    justify-content: flex-start;
    padding: 12px 14px;
    border-color: var(--line-soft);
    background: rgba(16, 27, 70, .55);
    font-size: 15px;
  }
  .header-cta { width: 100%; }

  .grid { grid-template-columns: minmax(0, 1fr); }
  .span-2, .span-3, .span-4, .span-5,
  .span-6, .span-7, .span-8, .span-9,
  .span-10, .span-12 { grid-column: 1 / -1; }

  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .header-utility { max-height: 140px; }
  .brandline__tag { display: none; }
  .header-status__inner { gap: 14px; font-size: 12px; }
  .status-item--quiet { display: none; }
  .header-nav__inner { min-height: 60px; }
  .brand-lockup__sub { display: none; }
  .footer-cols { grid-template-columns: minmax(0, 1fr); }
  .footer-legal__inner { flex-direction: column; align-items: flex-start; }
  .filter-count { margin-left: 0; width: 100%; }
}

/* ---------- 17. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}