/* ============================================================
   FB体育站 · /assets/site.css
   共享外壳：reset / tokens / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

:root {
  --night: #0A1A2F;
  --night-2: #12283F;
  --pitch-deep: #0E3A26;
  --pitch: #1C7A46;
  --pitch-light: #6FD08C;
  --ref: #F2C230;
  --red: #E03B2F;
  --paper: #F4F1E8;
  --edge: #DCD6C4;
  --sub: #48505C;
  --white: #FFFFFF;

  --font-head: "Barlow Condensed", "Oswald", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-data: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 20px;
  --s5: 32px;
  --s6: 56px;
  --s7: 88px;

  --shell-w: 1240px;
  --nav-h: 46px;
  --shadow-print: 4px 4px 0 var(--edge);
  --shadow-print-sm: 2px 2px 0 var(--edge);
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--night);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
input, textarea, select { font: inherit; color: inherit; }

::selection {
  background: var(--ref);
  color: var(--night);
}

:focus-visible {
  outline: 3px solid var(--ref);
  outline-offset: 3px;
}

/* ---------- 中文排版与标题基准 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

h1 { font-size: clamp(34px, 6vw, 72px); letter-spacing: -0.02em; }
h2 { font-size: clamp(24px, 3.4vw, 36px); }
h3 { font-size: clamp(19px, 2.2vw, 24px); }

p { text-wrap: pretty; }

/* ---------- 基础容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-w);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ============================================================
   跳过链接
   ============================================================ */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--ref);
  color: var(--night);
  border: 2px solid var(--night);
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: top .18s var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* ============================================================
   头部
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--paper);
  border-top: 4px solid var(--ref);
  border-bottom: 1px solid var(--edge);
  transition: box-shadow .22s var(--ease);
}

.site-header[data-condensed] {
  box-shadow: 0 8px 16px -10px rgba(10, 26, 47, .45);
}

/* --- 上层品牌条 --- */
.brand-strip {
  background: var(--paper);
  border-bottom: 1px solid var(--edge);
}

.brand-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
  min-height: 68px;
  padding-top: 10px;
  padding-bottom: 10px;
  transition: min-height .24s var(--ease), padding .24s var(--ease);
}

.site-header[data-condensed] .brand-strip__inner {
  min-height: 46px;
  padding-top: 4px;
  padding-bottom: 4px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark__glyph {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  background: var(--pitch-deep);
  color: var(--pitch-light);
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  transform: skewX(-8deg);
  box-shadow: 3px 3px 0 var(--ref);
  transition: width .24s var(--ease), height .24s var(--ease), font-size .24s var(--ease);
}

.site-header[data-condensed] .brand-mark__glyph {
  width: 32px;
  height: 32px;
  font-size: 16px;
  box-shadow: 2px 2px 0 var(--ref);
}

.brand-mark__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.15;
}

.brand-mark__name {
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--night);
}

.site-header[data-condensed] .brand-mark__name { font-size: 18px; }

.brand-mark__line {
  font-size: 12px;
  color: var(--sub);
  letter-spacing: .04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header[data-condensed] .brand-mark__line { display: none; }

.utility-nav {
  display: flex;
  align-items: center;
  gap: var(--s2);
  flex: 0 0 auto;
}

.utility-link {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 14px;
  color: var(--sub);
  border: 1px solid transparent;
  letter-spacing: .02em;
  transition: color .16s var(--ease), border-color .16s var(--ease), background .16s var(--ease);
}

.utility-link:hover {
  color: var(--pitch-deep);
  border-color: var(--edge);
  background: var(--white);
}

.utility-link--keep { color: var(--night); }

/* --- 移动菜单按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--night);
  color: var(--paper);
  border: 1px solid var(--night);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .08em;
  box-shadow: 2px 2px 0 var(--ref);
}

.nav-toggle:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--ref); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
}

.nav-toggle__bars i {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--ref);
}

.nav-toggle__label { line-height: 1; }

/* --- 下层栏目带 --- */
.column-band {
  background: var(--night);
  color: var(--paper);
  border-bottom: 1px solid var(--night-2);
}

.column-band__inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--s4);
}

.site-nav {
  display: flex;
  align-items: stretch;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: var(--nav-h);
  padding: 0 18px;
  font-size: 15px;
  letter-spacing: .04em;
  color: #C7D2E0;
  transition: color .16s var(--ease), background .16s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 3px;
  background: transparent;
  transition: background .16s var(--ease), left .16s var(--ease), right .16s var(--ease);
}

.site-nav__link:hover {
  color: var(--white);
  background: rgba(244, 241, 232, .06);
}

.site-nav__link:hover::after { background: var(--pitch-light); }

.site-nav__link[aria-current="page"] {
  color: var(--white);
  font-weight: 700;
  background: rgba(244, 241, 232, .05);
}

.site-nav__link[aria-current="page"]::after {
  left: 0;
  right: 0;
  background: var(--ref);
}

.band-cap {
  align-self: center;
  flex: 0 0 auto;
  width: 148px;
  height: 10px;
  background: repeating-linear-gradient(
    90deg,
    rgba(220, 214, 196, .55) 0 1px,
    transparent 1px 11px
  );
  opacity: .7;
}

/* --- 抽屉内分组（桌面隐藏） --- */
.drawer-group { display: none; }

.drawer-group__title {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--pitch-light);
  padding: 0 0 6px;
}

.drawer-group__link {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: #C7D2E0;
  border-bottom: 1px solid rgba(244, 241, 232, .1);
}

.drawer-group__link:hover { color: var(--white); }

/* --- 遮罩 --- */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(10, 26, 47, .62);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s var(--ease), visibility .2s var(--ease);
}

.nav-scrim[data-open="true"] {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* --- 滚动进度 --- */
.header-progress {
  height: 3px;
  background: var(--night-2);
  overflow: hidden;
}

.header-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--pitch) 0%, var(--pitch-light) 62%, var(--ref) 100%);
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: var(--s7);
  background: var(--night);
  color: var(--paper);
  border-top: 4px solid var(--ref);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr .85fr 1.4fr .9fr;
  gap: 0;
  padding-top: var(--s6);
  padding-bottom: var(--s5);
}

.footer-seg {
  padding: 0 var(--s4);
  min-width: 0;
}

.footer-seg:first-child { padding-left: 0; }
.footer-seg:last-child { padding-right: 0; }

.footer-seg + .footer-seg {
  border-left: 1px solid rgba(220, 214, 196, .28);
}

.footer-brand {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--white);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--pitch);
  display: inline-block;
}

.footer-seg__title {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ref);
  padding-bottom: 10px;
  margin-bottom: 12px;
  position: relative;
}

.footer-seg__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: rgba(220, 214, 196, .45);
}

.footer-seg__body {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 241, 232, .76);
  margin-bottom: 8px;
}

.footer-note {
  margin-top: 12px;
  padding: 10px 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 241, 232, .62);
  background: rgba(18, 40, 63, .9);
  border-left: 3px solid var(--pitch);
}

.footer-mono {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--pitch-light);
  word-break: break-all;
}

.footer-map {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-map__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(244, 241, 232, .82);
  transition: color .16s var(--ease), transform .16s var(--ease);
}

.footer-map__link:hover {
  color: var(--pitch-light);
  transform: translateX(4px);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s3);
  padding-top: var(--s4);
  padding-bottom: var(--s5);
  border-top: 1px solid rgba(220, 214, 196, .28);
}

.footer-legal__line {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(244, 241, 232, .78);
}

.footer-legal__meta {
  font-size: 12.5px;
  color: rgba(244, 241, 232, .5);
}

/* ============================================================
   基础组件
   ============================================================ */

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1.2;
  border: 2px solid var(--night);
  background: var(--paper);
  color: var(--night);
  box-shadow: 3px 3px 0 var(--night);
  transition: transform .12s var(--ease), box-shadow .12s var(--ease), background .16s var(--ease), color .16s var(--ease);
}

.btn:hover { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--night); }
.btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--night); }

.btn--primary {
  background: var(--ref);
  border-color: var(--night);
  color: var(--night);
}

.btn--pitch {
  background: var(--pitch);
  border-color: var(--pitch-deep);
  color: var(--white);
  box-shadow: 3px 3px 0 var(--pitch-deep);
}

.btn--pitch:hover { box-shadow: 1px 1px 0 var(--pitch-deep); }

.btn--ghost {
  background: transparent;
  border-color: var(--edge);
  color: var(--night);
  box-shadow: none;
}

.btn--ghost:hover {
  background: var(--white);
  border-color: var(--pitch);
  color: var(--pitch-deep);
  transform: none;
  box-shadow: none;
}

.btn--onDark {
  background: transparent;
  border-color: var(--pitch-light);
  color: var(--pitch-light);
  box-shadow: 3px 3px 0 rgba(111, 208, 140, .35);
}

/* --- 贴纸标签 --- */
.label-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: var(--white);
  border: 1px solid var(--edge);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sub);
  box-shadow: var(--shadow-print-sm);
  white-space: nowrap;
}

.label-tag--round {
  background: var(--ref);
  border-color: #B58C12;
  color: var(--night);
  font-weight: 700;
  box-shadow: 2px 2px 0 #B58C12;
}

.label-tag--live {
  background: var(--red);
  border-color: #8F231A;
  color: var(--white);
  box-shadow: 2px 2px 0 #8F231A;
}

/* --- 章节标题体系 --- */
.eyebrow {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--pitch-deep);
  margin-bottom: var(--s2);
}

.section-no {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(44px, 7vw, 88px);
  font-weight: 700;
  line-height: .85;
  letter-spacing: -.03em;
  color: var(--pitch);
  opacity: .3;
  transform: skewX(-8deg);
  transform-origin: left bottom;
}

.section-title {
  position: relative;
  font-family: var(--font-head);
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -.01em;
  padding-bottom: 12px;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  background: var(--ref);
}

/* --- 正文 --- */
.lede {
  font-size: 17px;
  line-height: 1.8;
  color: var(--sub);
  max-width: 38em;
}

.prose {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.85;
  color: #16202E;
}

.prose > * + * { margin-top: 16px; }
.prose h2 { margin-top: var(--s5); font-size: clamp(22px, 2.6vw, 28px); }
.prose h3 { margin-top: var(--s4); }
.prose ul { list-style: none; }
.prose ul li {
  position: relative;
  padding-left: 20px;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 8px;
  background: var(--pitch);
}
.prose a { color: var(--pitch-deep); border-bottom: 2px solid var(--ref); }
.prose code {
  font-family: var(--font-data);
  font-size: .92em;
  background: rgba(28, 122, 70, .1);
  padding: 1px 6px;
}

/* --- 卡片与面板 --- */
.paper-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--edge);
  box-shadow: var(--shadow-print);
  padding: var(--s4);
}

.panel {
  background: var(--night-2);
  color: var(--paper);
  border: 1px solid rgba(220, 214, 196, .18);
  padding: var(--s4);
}

.panel .section-title { color: var(--white); }
.panel .lede { color: rgba(244, 241, 232, .74); }

/* --- 网格 --- */
.grid {
  display: grid;
  gap: var(--s4);
}

.grid--split {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: var(--s5);
  align-items: start;
}

.grid--cards {
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

/* --- 面包屑 --- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  font-size: 13px;
  color: var(--sub);
}

.breadcrumb__item { white-space: nowrap; }
.breadcrumb__item a { border-bottom: 1px solid var(--edge); }
.breadcrumb__item a:hover { border-bottom-color: var(--pitch); color: var(--pitch-deep); }
.breadcrumb__sep { color: #A9A292; }

/* --- 图片容器 --- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--edge);
  box-shadow: var(--shadow-print);
  background-color: var(--pitch-deep);
  background-image: repeating-linear-gradient(
    115deg,
    rgba(111, 208, 140, .16) 0 22px,
    rgba(255, 255, 255, 0) 22px 44px
  );
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 8px 12px;
  background: rgba(10, 26, 47, .84);
  color: var(--paper);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .04em;
}

/* --- 数据表 --- */
.data-scroll {
  overflow-x: auto;
  background: var(--white);
  border: 1px solid var(--edge);
  border-left: 4px solid var(--pitch);
  box-shadow: var(--shadow-print);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  min-width: 560px;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--night);
  background: var(--paper);
  border-bottom: 1px solid var(--edge);
}

.data-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--night);
  color: var(--paper);
  text-align: left;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  white-space: nowrap;
}

.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--edge);
  white-space: nowrap;
}

.data-table tbody tr:nth-child(even) { background: rgba(220, 214, 196, .28); }
.data-table tbody tr:hover { background: rgba(28, 122, 70, .1); }
.data-table tbody tr:hover td:first-child { box-shadow: inset 3px 0 0 var(--pitch); }
.data-table .is-score { font-size: 20px; font-weight: 700; text-align: center; color: var(--night); }

/* --- 就地筛选 --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0 var(--s3);
}

.filter-btn {
  padding: 7px 14px;
  border: 1px solid var(--edge);
  background: var(--white);
  color: var(--sub);
  font-size: 14px;
  letter-spacing: .02em;
  transition: background .14s var(--ease), color .14s var(--ease), border-color .14s var(--ease), transform .14s var(--ease);
}

.filter-btn:hover {
  border-color: var(--pitch);
  color: var(--pitch-deep);
}

.filter-btn[aria-pressed="true"] {
  background: var(--ref);
  border-color: var(--night);
  color: var(--night);
  font-weight: 700;
  transform: translateY(-1px);
  box-shadow: 2px 2px 0 var(--night);
}

[data-filter-item][hidden] { display: none !important; }

/* --- 分隔与刻度 --- */
.rule {
  height: 1px;
  background: var(--edge);
  margin: var(--s5) 0;
  border: 0;
}

.rule--ticks {
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--edge) 0 1px, transparent 1px 12px);
}

/* --- 显现动效 --- */
.reveal {
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .site-nav__link { padding: 0 13px; font-size: 14px; }
  .band-cap { width: 72px; }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1.3fr; row-gap: var(--s5); }
  .footer-seg:nth-child(4) {
    grid-column: 1 / -1;
    border-left: 0;
    border-top: 1px solid rgba(220, 214, 196, .28);
    padding: var(--s4) 0 0;
  }
  .footer-seg:nth-child(3) { padding-right: 0; }
}

@media (max-width: 900px) {
  .utility-link { display: none; }
  .utility-link--keep { display: inline-flex; padding: 6px 8px; }
  .nav-toggle { display: inline-flex; }

  .brand-mark__line { max-width: 46vw; }

  .column-band {
    background: transparent;
    border-bottom: 0;
  }

  .column-band__inner { min-height: 0; }
  .band-cap { display: none; }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 90;
    width: min(84vw, 330px);
    flex-direction: column;
    align-items: stretch;
    padding: 18px 0 40px;
    background: var(--night);
    border-right: 4px solid var(--ref);
    overflow-y: auto;
    transform: translateX(-102%);
    transition: transform .26s var(--ease);
  }

  .site-nav[data-open="true"] { transform: translateX(0); }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    border-top: 1px solid rgba(244, 241, 232, .12);
  }

  .site-nav__link {
    height: auto;
    padding: 14px 24px;
    font-size: 16px;
    border-bottom: 1px solid rgba(244, 241, 232, .12);
  }

  .site-nav__link::after {
    left: 0;
    right: auto;
    top: 10px;
    bottom: 10px;
    width: 3px;
    height: auto;
  }

  .site-nav__link[aria-current="page"]::after {
    left: 0;
    right: auto;
    top: 10px;
    bottom: 10px;
    width: 3px;
    background: var(--ref);
  }

  .drawer-group {
    display: flex;
    flex-direction: column;
    padding: 22px 24px 0;
    gap: 2px;
  }

  .grid--split { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-seg { padding: 0 var(--s3); }
  .footer-seg:first-child { grid-column: 1 / -1; padding-left: 0; padding-bottom: var(--s4); border-bottom: 1px solid rgba(220, 214, 196, .28); }
  .footer-seg:nth-child(2) { border-left: 0; padding-left: 0; }
  .footer-seg:nth-child(3) { padding-right: 0; }
  .footer-seg:nth-child(4) { grid-column: 1 / -1; padding-left: 0; }
}

@media (max-width: 620px) {
  .shell { padding-left: 16px; padding-right: 16px; }
  .brand-strip__inner { min-height: 60px; gap: var(--s2); }
  .brand-mark__glyph { width: 36px; height: 36px; font-size: 17px; }
  .brand-mark__name { font-size: 18px; }
  .brand-mark__line { display: none; }
  .nav-toggle { padding: 7px 10px; font-size: 14px; }
  .utility-link--keep { display: none; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-seg,
  .footer-seg:first-child,
  .footer-seg:nth-child(2),
  .footer-seg:nth-child(3),
  .footer-seg:nth-child(4) {
    grid-column: 1 / -1;
    padding: 0 0 var(--s4);
    border-left: 0;
    border-top: 1px solid rgba(220, 214, 196, .22);
    padding-top: var(--s4);
  }
  .footer-seg:first-child { border-top: 0; padding-top: 0; }

  .footer-legal { flex-direction: column; align-items: flex-start; }
  .footer-brand { font-size: 26px; }
  .data-table { font-size: 13px; }
  .paper-card, .panel { padding: var(--s3); }
}

/* ============================================================
   可访问性：减少动态
   ============================================================ */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}