/* ==========================================================================
   obo体育官网 · 共享样式表 /assets/site.css
   夜间球场控制室气质：炭黑底 + 深墨绿轨道 + 荧光青刻度 + 暖橙数据
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --ink-900: #0A0F0E;
  --ink-800: #121A18;
  --ink-700: #18211E;
  --forest-700: #0F3B33;
  --forest-500: #1C5C4F;
  --neon-400: #35F2D0;
  --cyan-600: #1B9E8C;
  --ember-500: #FF8A3D;
  --amber-300: #FFC38A;
  --text-100: #EAF6F2;
  --text-400: #93A8A2;
  --hairline: #26332F;
  --signal-500: #FF5D5D;

  --rail-w: 88px;
  --topbar-h: 64px;
  --maxw: 1440px;
  --gutter: 24px;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-cond: "Oswald", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --ease: cubic-bezier(.2, .7, .3, 1);
  --radius: 2px;
}

/* ---------- 2. 重置与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  padding-left: var(--rail-w);
  background: var(--ink-900);
  color: var(--text-100);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: clip;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
hr { border: 0; border-top: 1px solid var(--hairline); margin: 0; }

a {
  color: var(--neon-400);
  text-decoration: none;
  transition: color .22s var(--ease);
}
a:hover { color: var(--text-100); }

:focus-visible {
  outline: 2px solid var(--neon-400);
  outline-offset: 3px;
  border-radius: 1px;
}

::selection { background: var(--neon-400); color: var(--ink-900); }

/* ---------- 3. 中文排版 ---------- */
h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--text-100);
  text-wrap: balance;
}
h1 { font-size: clamp(32px, 4.4vw, 64px); }
h2 { font-size: clamp(26px, 3vw, 44px); }
h3 { font-size: clamp(20px, 2vw, 32px); }
h4 { font-size: 18px; font-weight: 700; }

strong { font-weight: 700; color: var(--text-100); }
small { font-size: 12.5px; color: var(--text-400); }

/* ---------- 4. 工具类 ---------- */
.visually-hidden {
  position: absolute;
  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;
}

.eyebrow {
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan-600);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.is-neon { color: var(--neon-400); }
.is-ember { color: var(--ember-500); }
.is-muted { color: var(--text-400); }
.is-alert { color: var(--signal-500); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.grid--7-5 > .grid__main { grid-column: span 7; }
.grid--7-5 > .grid__side { grid-column: span 5; }
.grid--8-4 > .grid__main { grid-column: span 8; }
.grid--8-4 > .grid__side { grid-column: span 4; }

.band {
  position: relative;
  padding: clamp(56px, 7vw, 104px) 0;
  border-top: 1px solid var(--hairline);
}
.band--panel {
  background: var(--ink-800);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.band--tight { padding: clamp(32px, 4vw, 56px) 0; }
.band--flush { padding-bottom: clamp(24px, 3vw, 40px); }

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -180%);
  padding: 10px 22px;
  background: var(--neon-400);
  color: var(--ink-900);
  font-family: var(--font-cond);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  border-radius: var(--radius);
  transition: transform .22s var(--ease);
}
.skip-link:focus {
  transform: translate(-50%, 0);
  color: var(--ink-900);
}

/* ---------- 6. 页头 · 侧边轨道 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 80;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--forest-700) 0%, var(--ink-900) 46%, var(--ink-900) 100%);
  border-right: 1px solid var(--hairline);
}
.site-header::after {
  content: "";
  position: absolute;
  top: 0; right: -1px;
  width: 1px; height: 62%;
  background: linear-gradient(180deg, var(--neon-400), transparent);
  opacity: .55;
  pointer-events: none;
}

/* 品牌 */
.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 26px 6px 20px;
  border-bottom: 1px solid var(--hairline);
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-100);
}
.brand:hover { color: var(--neon-400); }

.brand__mark {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--neon-400);
  writing-mode: vertical-rl;
  text-orientation: upright;
}
.brand__name {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-family: var(--font-cond);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .16em;
  color: inherit;
}
/* 品牌副行仅在中大屏以下的顶栏排版中出现，桌面轨道不占位 */
.brand__sub { display: none; }

/* 移动按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--text-100);
  font-family: var(--font-cond);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color .22s var(--ease), color .22s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan-600); color: var(--neon-400); }
.nav-toggle__bars { display: grid; gap: 4px; }
.nav-toggle__bars > span {
  display: block;
  width: 18px; height: 1.5px;
  background: currentColor;
}
.nav-toggle__text { line-height: 1; }

/* 遮罩（仅移动端启用） */
.nav-scrim { display: none; }

/* 导航本体 */
.rail-nav {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0 18px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.rail-nav::-webkit-scrollbar { display: none; }

.rail-nav__list {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  width: 100%;
}

.rail-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 7px 4px;
  color: var(--text-400);
  font-family: var(--font-cond);
}
.rail-nav__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--hairline);
  transition: background .22s var(--ease), box-shadow .22s var(--ease), transform .22s var(--ease);
}
.rail-nav__label {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .18em;
  white-space: nowrap;
}
.rail-nav__link:hover { color: var(--text-100); }
.rail-nav__link:hover .rail-nav__dot { background: var(--cyan-600); }
.rail-nav__link[aria-current="page"] { color: var(--neon-400); }
.rail-nav__link[aria-current="page"] .rail-nav__dot {
  background: var(--neon-400);
  transform: scale(1.2);
  box-shadow: 0 0 0 4px rgba(53, 242, 208, .14), 0 0 12px rgba(53, 242, 208, .55);
}

/* 轨道底部：进度 · 说明 · CTA · 回顶 */
.rail-foot {
  margin-top: auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 16px 6px 22px;
  border-top: 1px solid var(--hairline);
}

.rail-meter {
  position: relative;
  width: 2px;
  height: 72px;
  background: var(--hairline);
  border-radius: 2px;
  overflow: hidden;
}
.rail-meter__fill {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: calc(var(--p, 0) * 100%);
  background: linear-gradient(180deg, var(--neon-400), var(--cyan-600));
  transition: height .14s linear;
}

.rail-foot__note { display: none; }

.rail-cta {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  background: var(--neon-400);
  color: var(--ink-900);
  font-family: var(--font-cond);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  border-radius: var(--radius);
}
.rail-cta:hover { background: #5cf8dd; color: var(--ink-900); }

.rail-top {
  padding: 8px 6px;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  color: var(--text-400);
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  line-height: 1.1;
  cursor: pointer;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}
.rail-top:hover { color: var(--neon-400); border-color: var(--neon-400); }
.rail-top[hidden] { display: none; }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 6vw, 96px);
  padding: clamp(48px, 6vw, 84px) 0 28px;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 48%, #0b1411 100%);
  border-top: 1px solid var(--hairline);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: min(38%, 420px);
  height: 1px;
  background: linear-gradient(90deg, var(--neon-400), transparent);
}

.footer-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.footer-head {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}

.footer-brand__mark {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .3em;
  color: var(--neon-400);
}
.footer-brand__name {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--text-100);
}
.footer-brand__tag {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}
.footer-nav__title {
  margin-bottom: 14px;
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--text-400);
}
.footer-nav__list { display: flex; flex-direction: column; gap: 11px; }
.footer-nav__link {
  color: var(--text-100);
  font-size: 15px;
  letter-spacing: .02em;
}
.footer-nav__link:hover { color: var(--neon-400); }
.footer-nav__link::before {
  content: "";
  display: inline-block;
  width: 12px; height: 1px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--hairline);
  transition: background .22s var(--ease), width .22s var(--ease);
}
.footer-nav__link:hover::before { background: var(--neon-400); width: 20px; }

.footer-contact {
  margin-top: clamp(36px, 5vw, 56px);
  padding-top: 26px;
  border-top: 1px solid var(--hairline);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px 32px;
}
.footer-contact__label {
  font-family: var(--font-cond);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-400);
}
.footer-contact__value {
  margin-top: 7px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-100);
  word-break: break-word;
}
.footer-contact__value--num { font-family: var(--font-mono); letter-spacing: .02em; }

.footer-legal {
  margin-top: clamp(32px, 4vw, 48px);
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 28px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-400);
}
.footer-legal__icp { letter-spacing: .04em; }
.footer-legal__copy { letter-spacing: .04em; }

/* ---------- 8. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-cond);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease), transform .22s var(--ease);
}
.btn--primary { background: var(--neon-400); color: var(--ink-900); }
.btn--primary:hover { background: #5cf8dd; color: var(--ink-900); transform: translateY(-1px); }
.btn--ghost { background: transparent; border-color: var(--hairline); color: var(--text-100); }
.btn--ghost:hover { border-color: var(--neon-400); color: var(--neon-400); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--text-400);
}
.breadcrumb a { color: var(--text-400); }
.breadcrumb a:hover { color: var(--neon-400); }
.breadcrumb__sep { color: var(--hairline); }

/* 图片容器：横向裁切 + 暗角 */
.media {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--ink-800);
  border-radius: var(--radius);
}
.media--4x3 { aspect-ratio: 4 / 3; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(120% 100% at 50% 38%, transparent 38%, rgba(4, 8, 7, .74) 100%);
  transition: opacity .35s var(--ease);
}
.media:hover::after { opacity: .72; }

/* 展览画册图版 */
.plate {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--ink-800);
  border-radius: var(--radius);
}
.plate--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), calc(100% - 46px) 100%, 0 100%);
  border-radius: 0;
}
.plate__index {
  position: absolute;
  top: 14px; left: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--neon-400);
}
.plate__body {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 20px 18px 18px;
  background: linear-gradient(180deg, transparent, rgba(6, 11, 10, .9));
  transition: transform .3s var(--ease);
}
.plate:hover .plate__body { transform: translateY(-4px); }
.plate__caption {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-400);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 数据表：无竖线，表头吸顶 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.data-table th,
.data-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
  white-space: nowrap;
}
.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--ink-800);
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-400);
}
.data-table tbody tr:hover { background: rgba(28, 92, 79, .16); }
.data-table__pos {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--neon-400);
  font-weight: 700;
}
.data-table__delta {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--ember-500);
}
.data-table__name { font-weight: 600; color: var(--text-100); }

/* 横向轨道 */
.track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--hairline) transparent;
}
.track > * { flex: 0 0 auto; scroll-snap-align: start; }
.track::-webkit-scrollbar { height: 6px; }
.track::-webkit-scrollbar-thumb { background: var(--hairline); border-radius: 3px; }
.track--edge {
  mask-image: linear-gradient(90deg, transparent 0, #000 34px, #000 calc(100% - 34px), transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 34px, #000 calc(100% - 34px), transparent 100%);
}

/* 联赛标签 / 筛选 */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  background: transparent;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--text-400);
  font-family: var(--font-cond);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  cursor: pointer;
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}
.chip:hover { color: var(--text-100); border-color: var(--cyan-600); }
.chip[aria-selected="true"],
.chip.is-active {
  background: var(--neon-400);
  border-color: var(--neon-400);
  color: var(--ink-900);
}

/* 折叠说明 */
.disclosure {
  border-bottom: 1px solid var(--hairline);
}
.disclosure > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-100);
  list-style: none;
}
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan-600);
  transition: transform .25s var(--ease), color .25s var(--ease);
}
.disclosure[open] > summary::after { transform: rotate(45deg); color: var(--neon-400); }
.disclosure__body {
  padding: 0 0 22px;
  color: var(--text-400);
  font-size: 15px;
  line-height: 1.85;
}
.disclosure__body p + p { margin-top: 12px; }

/* 卡片收束（尾部长内容尾部使用） */
.slip {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--ink-800);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}
.slip:hover { border-color: var(--cyan-600); transform: translateY(-2px); }
.slip__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-100);
}
.slip__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-400);
}

/* ---------- 9. 动效 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 10. 响应式 ---------- */
@media (max-width: 1023px) {
  body {
    padding-left: 0;
    padding-top: var(--topbar-h);
  }

  .site-header {
    top: 0; left: 0; right: 0; bottom: auto;
    width: auto;
    height: var(--topbar-h);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: rgba(10, 15, 14, .95);
    border-right: 0;
    border-bottom: 1px solid var(--hairline);
  }
  .site-header::after { display: none; }

  .masthead {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 12px;
    padding: 0;
    border-bottom: 0;
  }

  .brand {
    flex-direction: row;
    align-items: baseline;
    gap: 9px;
  }
  .brand__mark {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-size: 11px;
    letter-spacing: .18em;
  }
  .brand__name {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-family: var(--font-cond);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: .04em;
  }
  .brand__sub { display: none; }

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

  .nav-scrim {
    display: none;
    position: fixed;
    inset: var(--topbar-h) 0 0 0;
    background: rgba(4, 8, 7, .64);
    z-index: 1;
  }
  .site-header[data-open] .nav-scrim { display: block; }

  .rail-nav {
    position: fixed;
    top: var(--topbar-h);
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 2;
    width: min(86vw, 340px);
    padding: 26px 22px 30px;
    align-items: stretch;
    background: var(--ink-800);
    border-left: 1px solid var(--hairline);
    overflow-y: auto;
    transform: translateX(102%);
    transition: transform .32s var(--ease);
    box-shadow: -18px 0 42px rgba(0, 0, 0, .45);
  }
  .site-header[data-open] .rail-nav { transform: translateX(0); }

  .rail-nav__list {
    align-items: stretch;
    gap: 0;
    width: 100%;
    border-top: 1px solid var(--hairline);
  }
  .rail-nav__link {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 16px 4px;
    border-bottom: 1px solid var(--hairline);
    font-size: 16px;
  }
  .rail-nav__dot { width: 5px; height: 5px; }
  .rail-nav__label {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    letter-spacing: .02em;
  }
  .rail-nav__link[aria-current="page"] { color: var(--neon-400); }
  .rail-nav__link[aria-current="page"]::after {
    content: "当前";
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .12em;
    color: var(--cyan-600);
  }

  .rail-foot {
    margin-top: 26px;
    align-items: stretch;
    gap: 16px;
    padding: 0;
    border-top: 0;
  }
  .rail-meter {
    width: 100%;
    height: 2px;
    margin-top: 22px;
  }
  .rail-meter__fill {
    width: calc(var(--p, 0) * 100%);
    height: 100%;
    background: linear-gradient(90deg, var(--neon-400), var(--cyan-600));
    transition: width .14s linear;
  }
  .rail-foot__note {
    display: block;
    font-family: var(--font-cond);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .12em;
    color: var(--text-400);
  }
  .rail-cta { display: inline-flex; }
  .rail-top { align-self: flex-start; padding: 10px 16px; font-size: 12px; }

  .footer-head { grid-template-columns: minmax(0, 1fr); }
  .footer-brand__tag { max-width: 46ch; }
}

@media (max-width: 720px) {
  :root { --gutter: 18px; }

  .grid--7-5 > .grid__main,
  .grid--7-5 > .grid__side,
  .grid--8-4 > .grid__main,
  .grid--8-4 > .grid__side { grid-column: span 12; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 18px; }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
  .footer-legal { flex-direction: column; }

  .data-table { font-size: 14px; }
  .data-table th, .data-table td { padding: 11px 12px; }
}

@media (max-width: 420px) {
  .footer-nav { grid-template-columns: minmax(0, 1fr); }
  .rail-nav { width: 92vw; }
}

/* ---------- 11. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .plate:hover .plate__body { transform: none; }
  .btn--primary:hover { transform: none; }
  .slip:hover { transform: none; }
}