/* ==========================================================================
   开云体育入口 YUN 中文站 — 共享外壳样式 /assets/site.css
   近单色雪青体系 + 戈壁暖沙刻度 + 荧光绿高亮
   ========================================================================== */

/* ---------- 1. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{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;cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B1418;
  --ink-2:#12212A;
  --ink-3:#1B3240;
  --teal:#2E5A6B;
  --teal-lt:#78B8C8;
  --teal-mist:#CFE7EC;
  --sand:#E8DCC6;
  --sand-line:#C9A97A;
  --paper:#F4F1E9;
  --lime:#B6FF3C;
  --t-ink:#10181C;
  --t-fog:#E3EDF0;
  --t-mute:rgba(227,237,240,.68);
  --t-faint:rgba(227,237,240,.46);
  --t-mute-ink:rgba(16,24,28,.68);
  --line-dark:rgba(227,237,240,.14);
  --line-ink:rgba(16,24,28,.12);

  --font-head:"Barlow Condensed","Oswald","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Oswald","Inter","PingFang SC",system-ui,sans-serif;

  --wrap:1240px;
  --gutter:clamp(20px,5vw,64px);
  --hdr-h:72px;
  --r:2px;
  --step-s:160ms;
  --step-m:240ms;
  --step-l:320ms;
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.5;
  background:var(--ink);
  color:var(--t-fog);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:900;line-height:1.05;letter-spacing:-.01em}
p{max-width:64ch}
.numeral,.kpi,.time,.card__num,.idx__num,.hdr-route__idx,.footer-legal,.footer-contact{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.eyebrow{
  display:block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--teal-lt);
}
.title-1{font-size:clamp(34px,7vw,72px);line-height:1.02}
.title-2{font-size:clamp(26px,4vw,40px)}
.title-3{font-size:22px}
.lede{font-size:18px;line-height:1.6;color:var(--t-mute)}
.kpi{font-size:clamp(40px,7vw,80px);font-weight:600;line-height:1;color:var(--lime)}
.tag{
  display:inline-block;
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  padding:4px 8px;
  border:1px solid var(--sand-line);
  color:var(--sand);
}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-80px;left:16px;
  z-index:200;
  padding:10px 16px;
  background:var(--lime);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  border-radius:var(--r);
  transition:top var(--step-s) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 5. 头部 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  color:var(--t-fog);
  background:linear-gradient(180deg,rgba(11,20,24,.88),rgba(11,20,24,0));
  border-bottom:1px solid transparent;
  transition:background-color var(--step-m) var(--ease),border-color var(--step-m) var(--ease);
}
.site-header[data-scrolled]{
  background-color:rgba(11,20,24,.96);
  background-image:none;
  border-bottom-color:var(--line-dark);
}
.hdr-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 var(--gutter);
  height:var(--hdr-h);
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,28px);
  transition:height var(--step-m) var(--ease);
}
.site-header[data-scrolled] .hdr-inner{height:60px}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:9px;height:26px;
  background:var(--lime);
  clip-path:polygon(0 0,100% 14%,100% 100%,0 86%);
}
.brand__stack{display:flex;flex-direction:column;gap:2px}
.brand__name{font-family:var(--font-head);font-weight:900;font-size:18px;line-height:1.05;letter-spacing:-.01em}
.brand__suffix{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-lt);font-family:var(--font-num)}

.hdr-nav{
  display:flex;
  align-items:center;
  gap:clamp(16px,2.4vw,32px);
  margin-left:auto;
}
.hdr-nav__list{display:flex;align-items:center;gap:clamp(12px,1.8vw,24px)}
.hdr-nav__link{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:14px;
  color:var(--t-mute);
  transition:color var(--step-s) var(--ease);
}
.hdr-nav__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--step-m) var(--ease);
}
.hdr-nav__link:hover{color:var(--t-fog)}
.hdr-nav__link[aria-current="page"]{color:var(--t-fog);font-weight:700}
.hdr-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.hdr-routes{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,20px);
  padding-left:clamp(12px,2vw,24px);
  border-left:1px solid var(--line-dark);
}
.hdr-route{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  font-size:14px;
  color:var(--t-fog);
  transition:color var(--step-s) var(--ease);
}
.hdr-route__idx{font-size:11px;color:var(--teal-lt)}
.hdr-route__label{white-space:nowrap}
.hdr-route:hover{color:var(--lime)}
.hdr-route--live .hdr-route__idx{color:var(--lime)}
.hdr-route--live .hdr-route__label{position:relative;padding-left:10px}
.hdr-route--live .hdr-route__label::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:5px;height:5px;
  margin-top:-2px;
  background:var(--lime);
  transform:rotate(45deg);
}
.hdr-nav__foot{display:none}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border:1px solid var(--line-dark);
  border-radius:var(--r);
  color:var(--t-fog);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.nav-toggle__bars{position:relative;display:block;width:16px;height:1px;background:currentColor}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;height:1px;
  background:currentColor;
  transition:transform var(--step-m) var(--ease),top var(--step-m) var(--ease),background-color var(--step-s) linear;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-header[data-open] .nav-toggle__bars{background:transparent}
.site-header[data-open] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}

.hdr-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:transparent;
  overflow:hidden;
}
.hdr-progress__bar{
  display:block;
  height:100%;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,10vw,120px);
  background:var(--ink);
  color:var(--t-fog);
  border-top:1px solid var(--sand-line);
}
.footer-inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(32px,4vw,48px) var(--gutter) 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,2.2fr);
  gap:clamp(24px,4vw,56px);
  align-items:start;
}
.footer-brand{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.footer-brand__mark{
  width:8px;height:22px;
  background:var(--lime);
  clip-path:polygon(0 0,100% 14%,100% 100%,0 86%);
}
.footer-brand__name{font-family:var(--font-head);font-weight:900;font-size:18px;letter-spacing:-.01em}
.footer-brand__suffix{font-family:var(--font-num);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-lt)}
.footer-brand__note{
  flex:0 0 100%;
  margin-top:10px;
  font-size:12px;
  line-height:1.7;
  color:var(--t-faint);
  max-width:32ch;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,32px);
}
.footer-col__title{
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--teal-lt);
  margin-bottom:10px;
}
.footer-col__list{display:flex;flex-direction:column;gap:2px}
.footer-col__link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--t-mute);
  transition:color var(--step-s) var(--ease);
}
.footer-col__link:hover{color:var(--lime)}
.footer-bottom{
  margin-top:clamp(24px,3vw,36px);
  padding-top:16px;
  border-top:1px solid var(--line-dark);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  font-size:12px;
  line-height:1.7;
  color:var(--t-faint);
}
.footer-contact{max-width:60ch}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.footer-legal__sep{color:var(--sand-line)}

.to-top{
  position:fixed;
  right:clamp(16px,4vw,40px);
  bottom:clamp(16px,4vw,32px);
  z-index:90;
  padding:10px 14px;
  font-size:11px;
  letter-spacing:.16em;
  background:var(--ink-2);
  color:var(--t-fog);
  border:1px solid var(--line-dark);
  border-radius:var(--r);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--step-m) var(--ease),transform var(--step-m) var(--ease),visibility var(--step-m) linear,color var(--step-s) var(--ease),border-color var(--step-s) var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:var(--lime);border-color:var(--lime)}

/* ---------- 7. 布局容器 ---------- */
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.wrap--narrow{max-width:820px}
.section{padding:clamp(48px,8vw,96px) 0}
.section--ink{background:var(--ink);color:var(--t-fog)}
.section--paper{background:var(--sand);color:var(--t-ink)}
.section--paper .lede,.section--paper p{color:var(--t-mute-ink)}
.section--paper .eyebrow{color:var(--teal)}
.section--deep{background:var(--ink-2)}
.section__head{margin-bottom:clamp(24px,4vw,40px);display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.section__head > *{max-width:44ch}
.section--stage{padding:clamp(36px,5vw,64px) 0}
.breathe{
  padding:clamp(64px,12vw,140px) 0;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(24px,4vw,40px);
  letter-spacing:-.01em;
  color:var(--t-fog);
}
.breathe--paper{background:var(--paper);color:var(--t-ink)}
.cut{position:relative;padding-top:clamp(40px,6vw,72px)}
.cut::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:var(--sand-line);
  opacity:.7;
}
.bevel{
  background:var(--ink-3);
  clip-path:polygon(0 3%,100% 0,100% 97%,0 100%);
  padding:clamp(40px,7vw,88px) 0;
}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.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-index{grid-column:span 2}
.offset-1{grid-column-start:2}
.grid--cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2.4vw,28px);align-items:start}

.site-main{display:block}
.site-main--offset{padding-top:var(--hdr-h)}
#main-content{scroll-margin-top:calc(var(--hdr-h) + 16px)}

/* ---------- 8. 页面底色切换 ---------- */
.page-paper{background:var(--paper);color:var(--t-ink)}
.page-paper .lede,.page-paper p{color:var(--t-mute-ink)}
.page-paper .section--ink,.page-paper .section--deep{color:var(--t-fog)}
.page-paper .section--ink .lede,.page-paper .section--ink p{color:var(--t-mute)}

/* ---------- 9. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  font-family:var(--font-head);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  border:1px solid var(--line-dark);
  border-radius:var(--r);
  color:var(--t-fog);
  transition:background-color var(--step-s) var(--ease),color var(--step-s) var(--ease),border-color var(--step-s) var(--ease);
}
.btn--solid{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.btn--solid:hover{background:transparent;color:var(--lime)}
.btn--ghost{background:transparent;color:var(--t-fog)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--line{
  padding:6px 0;
  border:0;
  border-bottom:2px solid var(--lime);
  border-radius:0;
  color:var(--t-ink);
}
.btn--line:hover{color:var(--teal)}
.btn-group{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 10. 面包屑 ---------- */
.crumbs{padding:clamp(16px,2.4vw,24px) 0;border-bottom:1px solid var(--line-dark)}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;letter-spacing:.04em;color:var(--t-faint)}
.crumbs__link{color:var(--t-mute);transition:color var(--step-s) var(--ease)}
.crumbs__link:hover{color:var(--lime)}
.crumbs__sep{color:var(--sand-line)}
.crumbs__item[aria-current="page"]{color:var(--t-fog)}
.page-paper .crumbs{border-bottom-color:var(--line-ink)}
.page-paper .crumbs__list{color:var(--t-mute-ink)}
.page-paper .crumbs__link{color:var(--t-mute-ink)}
.page-paper .crumbs__link:hover{color:var(--teal)}
.page-paper .crumbs__item[aria-current="page"]{color:var(--t-ink)}

/* ---------- 11. 分段切换 ---------- */
.seg{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:4px;
  border:1px solid var(--line-dark);
  border-radius:var(--r);
  background:rgba(227,237,240,.03);
}
.seg__tab{
  padding:9px 16px;
  font-size:14px;
  color:var(--t-mute);
  border:1px solid transparent;
  border-radius:var(--r);
  transition:background-color var(--step-s) var(--ease),color var(--step-s) var(--ease);
}
.seg__tab:hover{color:var(--t-fog)}
.seg__tab[aria-selected="true"]{background:var(--lime);color:var(--ink);font-weight:700}
.seg__panel{padding-top:clamp(20px,3vw,32px)}
.seg__panel:not([hidden]){animation:segIn var(--step-s) var(--ease) both}
@keyframes segIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.page-paper .seg{background:rgba(16,24,28,.03);border-color:var(--line-ink)}
.page-paper .seg__tab{color:var(--t-mute-ink)}
.page-paper .seg__tab:hover{color:var(--t-ink)}

/* ---------- 12. 时间轴 ---------- */
.tl{position:relative;padding-left:28px}
.tl::before{
  content:"";
  position:absolute;
  left:12px;top:6px;bottom:6px;
  width:1px;
  background:linear-gradient(180deg,var(--teal-lt),rgba(201,169,122,.45));
}
.tl__item{position:relative;padding-bottom:clamp(20px,3vw,32px)}
.tl__item::before{
  content:"";
  position:absolute;
  left:-20px;top:6px;
  width:9px;height:9px;
  background:var(--ink);
  border:1px solid var(--sand-line);
  transform:rotate(45deg);
}
.tl__item[data-state="live"]::before{background:var(--lime);border-color:var(--lime)}
.tl__time{display:block;font-size:13px;color:var(--teal-lt);margin-bottom:6px}
.tl__body{max-width:56ch;color:var(--t-mute);font-size:15px;line-height:1.6}
.tl__item[data-state="live"] .tl__time{color:var(--lime)}
.page-paper .tl__body{color:var(--t-mute-ink)}

/* ---------- 13. 卡片 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  background:var(--ink-2);
  border:1px solid var(--line-dark);
  border-radius:var(--r);
}
.card--sand{background:var(--sand);color:var(--t-ink);border-color:var(--line-ink)}
.card--line{background:transparent}
.card--drop{margin-top:clamp(20px,3vw,36px)}
.card__head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:12px}
.card__num{font-size:13px;color:var(--teal-lt);letter-spacing:.16em}
.card__title{font-family:var(--font-head);font-weight:900;font-size:20px;line-height:1.15}
.card__body{font-size:15px;line-height:1.6;color:var(--t-mute);max-width:52ch}
.card__meta{margin-top:14px;padding-top:12px;border-top:1px solid var(--line-dark);font-size:12px;color:var(--t-faint);display:flex;flex-wrap:wrap;gap:8px 18px}
.card--sand .card__body{color:var(--t-mute-ink)}
.card--sand .card__num{color:var(--teal)}
.card--sand .card__meta{border-top-color:var(--line-ink);color:var(--t-mute-ink)}

/* ---------- 14. 图例 ---------- */
.legend{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--t-mute);
}
.legend__item{display:inline-flex;align-items:center;gap:8px}
.legend__swatch{
  width:10px;height:10px;
  border:1px solid var(--sand-line);
  background:transparent;
  flex:0 0 auto;
}
.legend__swatch--league{background:var(--teal)}
.legend__swatch--cup{background:var(--sand-line)}
.legend__swatch--out{background:var(--lime);border-color:var(--lime)}
.legend__swatch--line{width:18px;height:1px;border:0;background:var(--sand-line)}
.page-paper .legend{color:var(--t-mute-ink)}

/* ---------- 15. 坐标索引 ---------- */
.idx{position:sticky;top:calc(var(--hdr-h) + 24px);display:flex;flex-direction:column;gap:2px}
.idx__title{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-lt);margin-bottom:10px}
.idx__item{
  display:flex;
  gap:10px;
  padding:8px 0 8px 12px;
  font-size:12px;
  color:var(--t-faint);
  border-left:1px solid var(--line-dark);
  transition:color var(--step-s) var(--ease),border-color var(--step-s) var(--ease);
}
.idx__item:hover{color:var(--t-fog)}
.idx__item[aria-current="true"]{color:var(--lime);border-left-color:var(--lime)}
.idx__num{font-size:11px}

/* ---------- 16. 图片容器 ---------- */
.figure{margin:0}
.figure__frame{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,var(--ink-3),var(--ink-2));
  border:1px solid var(--line-dark);
  border-radius:var(--r);
}
.figure--21x9 .figure__frame{aspect-ratio:21/9}
.figure--16x9 .figure__frame{aspect-ratio:16/9}
.figure--4x5 .figure__frame{aspect-ratio:4/5}
.figure--1x1 .figure__frame{aspect-ratio:1/1}
.figure__img{
  width:100%;height:100%;
  object-fit:cover;
  filter:saturate(.82) contrast(1.06) brightness(.94);
}
.figure__cap{
  display:block;
  margin-top:10px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--t-faint);
}
.page-paper .figure__frame{border-color:var(--line-ink)}
.page-paper .figure__cap{color:var(--t-mute-ink)}

/* ---------- 17. 折叠 ---------- */
.disclose{margin-top:12px}
.disclose__btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--teal-lt);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color var(--step-s) var(--ease),border-color var(--step-s) var(--ease);
}
.disclose__btn:hover{color:var(--lime);border-bottom-color:var(--lime)}
.disclose__btn[aria-expanded="true"]{color:var(--lime)}
.disclose__target{margin-top:12px}
.disclose__target:not([hidden]){animation:segIn var(--step-s) var(--ease) both}

/* ---------- 18. 显现动效 ---------- */
[data-js="on"] [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--step-l) var(--ease),transform var(--step-l) var(--ease);
}
[data-js="on"] [data-reveal="in"]{opacity:1;transform:none}

/* ---------- 19. 响应式 ---------- */
@media (max-width:1080px){
  .hdr-routes{gap:10px;padding-left:12px}
  .hdr-route__label{font-size:13px}
}

@media (max-width:1024px){
  :root{--hdr-h:60px}
  .site-header[data-scrolled] .hdr-inner{height:var(--hdr-h)}
  .hdr-nav{
    position:fixed;
    top:var(--hdr-h);
    left:0;right:0;bottom:0;
    margin-left:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:16px var(--gutter) 48px;
    background:var(--ink-2);
    border-top:1px solid var(--line-dark);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-8px);
    transition:opacity var(--step-m) var(--ease),transform var(--step-m) var(--ease),visibility var(--step-m) linear;
  }
  .site-header[data-open] .hdr-nav{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .hdr-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .hdr-nav__link{
    display:block;
    font-family:var(--font-head);
    font-weight:900;
    font-size:22px;
    padding:16px 0 16px 14px;
    border-bottom:1px solid var(--line-dark);
    border-left:2px solid transparent;
    color:var(--t-fog);
  }
  .hdr-nav__link::after{display:none}
  .hdr-nav__link[aria-current="page"]{border-left-color:var(--lime);color:var(--lime)}
  .hdr-routes{
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:20px 0 0;
    border-left:0;
  }
  .hdr-route{
    width:100%;
    padding:12px 0;
    font-size:16px;
    border-bottom:1px solid var(--line-dark);
  }
  .hdr-nav__foot{
    display:block;
    margin-top:24px;
    font-size:12px;
    line-height:1.7;
    color:var(--t-faint);
    max-width:32ch;
  }
  .nav-toggle{display:inline-flex;margin-left:auto}
  .footer-top{grid-template-columns:1fr}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4,.span-5{grid-column:span 3}
  .span-6,.span-7,.span-8{grid-column:span 6}
  .span-index{grid-column:span 6}
  .offset-1{grid-column-start:auto}
  .idx{position:static;flex-direction:row;flex-wrap:wrap;gap:8px 16px}
  .idx__item{border-left:0;border-bottom:1px solid var(--line-dark);padding:6px 0}
  .idx__item[aria-current="true"]{border-bottom-color:var(--lime)}
  .idx__title{flex:0 0 100%}
}

@media (max-width:720px){
  body{font-size:15px}
  .lede{font-size:16px}
  .grid--12{grid-template-columns:1fr}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-index{grid-column:span 1}
  .grid--cards{grid-template-columns:1fr}
  .card--drop{margin-top:0}
  .footer-grid{grid-template-columns:1fr;gap:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{width:100%;justify-content:center}
  .btn--line{width:auto;justify-content:flex-start}
  .seg{width:100%}
  .seg__tab{flex:1 1 auto;text-align:center}
}

/* ---------- 20. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.12s !important;
    animation-iteration-count:1 !important;
    transition-duration:.12s !important;
  }
  [data-js="on"] [data-reveal]{transform:none;transition:opacity 120ms linear}
  .hdr-progress__bar{transition:none}
  .bevel{clip-path:none}
}