/* =========================================================
   196体育看台 · 共享样式 /assets/site.css
   深空控制室 + 复古印刷索引 双材质体系
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol,hr{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
hr{border:0;height:0}
table{border-collapse:collapse;width:100%}

/* ---------- 2. 变量 ---------- */
:root{
  --deep-space:#050A18;
  --navy-deck:#0C1730;
  --line-steel:#23325A;
  --cream:#F3E9D6;
  --cream-ink:#10131F;
  --cyan:#2FE6D6;
  --teal-shadow:#0E6F6B;
  --signal:#FF6A2B;
  --ember:#D93A21;
  --frost:#EEF3FF;
  --mist:#8FA0C4;
  --verify:#7DE0A6;

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Inter","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1440px;
  --gutter:clamp(16px,4vw,48px);
  --line:1px solid var(--line-steel);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --header-h:112px;
}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--deep-space);
  color:var(--frost);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.78;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
h1,h2,h3,h4,.display{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.14;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--frost);
}
h1{font-size:clamp(30px,5vw,72px)}
h2{font-size:clamp(24px,3.2vw,44px)}
h3{font-size:24px;letter-spacing:.08em}
h4{font-size:18px;letter-spacing:.06em}
p{text-wrap:pretty}
.num,.stat__value,.ticker__value,.footer-contact__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
::selection{background:var(--cyan);color:var(--cream-ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}
#main-content{display:block}
#main-content:focus-visible{outline:2px solid var(--cyan);outline-offset:4px}

/* ---------- 4. 骨架与网格 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(40px,6vw,88px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 20px;
  padding-bottom:14px;margin-bottom:clamp(20px,3vw,36px);
  border-bottom:1px solid var(--line-steel);
}
.section-head__num{font-family:var(--font-mono);font-size:12px;letter-spacing:.24em;color:var(--ember)}
.section-head__title{font-size:clamp(20px,2.4vw,32px);margin:0}
.section-head__meta{margin-left:auto;font-size:13px;color:var(--mist);letter-spacing:.04em}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.28em;text-transform:uppercase;color:var(--cyan);
}
.split{display:grid;grid-template-columns:minmax(0,72px) minmax(0,1fr);gap:clamp(18px,3vw,44px);align-items:start}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}
.rule{height:1px;background:repeating-linear-gradient(90deg,var(--line-steel) 0 6px,transparent 6px 12px);margin-block:clamp(24px,4vw,48px)}

/* ---------- 5. 按钮与链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;font-size:13px;font-weight:700;letter-spacing:.1em;
  border:1px solid transparent;border-radius:2px;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--signal{background:var(--signal);color:#150F0A;border-color:var(--signal)}
.btn--signal:hover{background:#FF8149;border-color:#FF8149;transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--frost);border-color:var(--line-steel)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan)}
.btn--cyan{background:var(--cyan);color:var(--cream-ink);border-color:var(--cyan)}
.btn--cyan:hover{background:#5CF0E4;border-color:#5CF0E4}
.link{
  color:var(--cyan);
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-size:0% 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size var(--dur) var(--ease),color var(--dur) var(--ease);
}
.link:hover{background-size:100% 1px}

/* ---------- 6. 标签 / 卡片 / 纸层 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);background:rgba(47,230,214,.06);
  border:1px solid var(--line-steel);padding:4px 9px;
}
.tag--signal{color:var(--signal);background:rgba(255,106,43,.08);border-color:rgba(255,106,43,.5)}
.tag--ember{color:#FFB2A0;background:rgba(217,58,33,.16);border-color:rgba(217,58,33,.55)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13px;letter-spacing:.04em;color:var(--mist);border:1px solid var(--line-steel);padding:6px 13px;border-radius:999px;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease)}
.chip:hover{color:var(--frost);border-color:var(--cyan)}
.chip[aria-pressed="true"]{color:var(--cream-ink);background:var(--cyan);border-color:var(--cyan)}
.card{
  position:relative;background:var(--navy-deck);border:var(--line);
  padding:clamp(18px,2.4vw,28px);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translate(-2px,-3px);border-color:var(--cyan);box-shadow:0 16px 34px -24px rgba(47,230,214,.75)}
.card__title{font-size:18px;letter-spacing:.06em;margin-bottom:8px}
.card__meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--mist)}
.card--paper{background:var(--cream);color:var(--cream-ink);border-color:#0B1224}
.card--paper .card__meta{color:#5A5142}
.paper{
  position:relative;background:var(--cream);color:var(--cream-ink);
  border:1px solid #0B1224;padding:clamp(20px,3vw,36px);
}
.paper::after{
  content:"";position:absolute;right:10px;bottom:10px;width:56px;height:10px;
  background:repeating-linear-gradient(90deg,var(--ember) 0 1px,transparent 1px 7px);
  opacity:.5;pointer-events:none;
}

/* ---------- 7. 指标 / 时间线 / 索引轨 ---------- */
.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-size:clamp(40px,6.4vw,96px);line-height:.95;letter-spacing:-.02em;
  color:var(--cyan);
}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist)}
.stat--signal .stat__value{color:var(--signal)}

.index-rail{position:sticky;top:calc(var(--header-h) + 28px);display:flex;flex-direction:column;gap:14px}
.index-rail__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--mist)}
.rail-nav{display:flex;flex-direction:column;gap:12px}
.rail-nav__link{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--mist);transition:color var(--dur) var(--ease);
}
.rail-nav__link::before{content:"";width:12px;height:1px;background:var(--line-steel);transition:width var(--dur) var(--ease),background var(--dur) var(--ease)}
.rail-nav__link:hover{color:var(--frost)}
.rail-nav__link:hover::before{width:20px;background:var(--mist)}
.rail-nav__link.is-active{color:var(--cyan)}
.rail-nav__link.is-active::before{width:28px;background:var(--cyan)}
.rail-nav__num{color:var(--teal-shadow)}
.rail-nav__link.is-active .rail-nav__num{color:var(--ember)}

.timeline{position:relative;padding-left:26px;border-left:1px solid var(--line-steel)}
.timeline__item{position:relative;padding-bottom:clamp(20px,3vw,32px)}
.timeline__item::before{
  content:"";position:absolute;left:-31px;top:9px;width:9px;height:9px;
  background:var(--deep-space);border:1px solid var(--cyan);transform:rotate(45deg);
}
.timeline__time{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--mist);margin-bottom:6px}

/* ---------- 8. 面包屑 / 正文 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.breadcrumb a{color:var(--mist);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--cyan);border-color:var(--cyan)}
.breadcrumb__sep{color:var(--line-steel)}
.breadcrumb [aria-current="page"]{color:var(--frost)}
.prose{max-width:74ch;font-size:17px;line-height:1.8}
.prose>*+*{margin-top:1.05em}
.prose h2,.prose h3{letter-spacing:.08em}
.prose h2{margin-top:1.8em}
.prose h3{margin-top:1.5em;font-size:20px}
.prose ul li,.prose ol li{position:relative;padding-left:20px;margin-top:.5em}
.prose ul li::before{content:"";position:absolute;left:0;top:.74em;width:9px;height:1px;background:var(--cyan)}
.prose ol{counter-reset:prose-ol}
.prose ol li{counter-increment:prose-ol}
.prose ol li::before{content:counter(prose-ol,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--font-mono);font-size:12px;color:var(--ember)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(47,230,214,.42)}
.prose a:hover{border-color:var(--cyan)}
.prose strong{color:var(--frost)}
.paper .prose,.card--paper .prose{color:var(--cream-ink)}

/* ---------- 9. 图片容器基础规则 ---------- */
.frame{
  position:relative;overflow:hidden;display:block;
  background:linear-gradient(135deg,#0C1730,#050A18);
  border:1px solid var(--line-steel);
}
.frame::before,.frame::after{
  content:"";position:absolute;width:14px;height:14px;border:1px solid var(--cyan);
  opacity:.75;pointer-events:none;z-index:2;
}
.frame::before{top:6px;left:6px;border-right:0;border-bottom:0}
.frame::after{right:6px;bottom:6px;border-left:0;border-top:0}
.frame img{width:100%;height:100%;object-fit:cover}
.frame--16x9{aspect-ratio:16/9}
.frame--4x3{aspect-ratio:4/3}
.frame--1x1{aspect-ratio:1/1}
.frame--21x9{aspect-ratio:21/9}
.frame__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:10px 14px;font-size:12px;letter-spacing:.08em;color:var(--mist);
  background:linear-gradient(180deg,rgba(5,10,24,0),rgba(5,10,24,.92));
}
.frame__badge{
  position:absolute;top:0;left:0;z-index:2;padding:5px 10px;
  background:var(--cream);color:var(--cream-ink);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
}

/* ---------- 10. 显现 ---------- */
.reveal,[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible,[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 11. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:0;left:0;z-index:200;
  transform:translateY(-140%);
  background:var(--cyan);color:var(--cream-ink);
  padding:12px 20px;font-size:14px;font-weight:700;letter-spacing:.1em;
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 12. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--deep-space);
  border-bottom:1px solid var(--line-steel);
}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:3;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--signal));
  pointer-events:none;
}
.ticker{
  --ticker-gap:clamp(22px,4vw,56px);
  position:relative;overflow:hidden;max-height:48px;
  background:linear-gradient(90deg,#08122A 0%,#0C1730 50%,#08122A 100%);
  border-bottom:1px solid var(--line-steel);
  transition:max-height .3s var(--ease),opacity .24s var(--ease);
}
.ticker__track{display:flex;width:max-content;animation:ticker-scroll 46s linear infinite}
.ticker:hover .ticker__track,.ticker:focus-within .ticker__track{animation-play-state:paused}
.ticker__group{display:flex;align-items:center;gap:var(--ticker-gap);padding:10px var(--ticker-gap) 10px 0}
.ticker__item{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.ticker__label{color:var(--mist)}
.ticker__value{font-size:13px;color:var(--cyan)}
.ticker__dot{width:6px;height:6px;border-radius:50%;background:var(--signal);box-shadow:0 0 08px rgba(255,106,43,.9)}
@keyframes ticker-scroll{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

.commandbar{position:relative;background:linear-gradient(180deg,rgba(12,23,48,.96),rgba(5,10,24,.96))}
.commandbar__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  max-width:var(--shell);margin-inline:auto;
  padding:10px var(--gutter);
  transition:padding .24s var(--ease);
}
.site-header[data-condensed] .ticker{max-height:0;opacity:0;border-color:transparent}
.site-header[data-condensed] .commandbar__inner{padding-block:6px}

.logotype{display:inline-flex;align-items:center;gap:12px;color:var(--frost)}
.logotype__mark{
  font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:.08em;
  padding:6px 9px;color:var(--cyan);border:1px solid var(--cyan);background:rgba(47,230,214,.08);
}
.logotype__text{display:flex;flex-direction:column;line-height:1.05;font-size:15px;font-weight:800;letter-spacing:.14em}
.logotype__sub{font-family:var(--font-mono);font-size:10px;font-style:normal;letter-spacing:.24em;color:var(--mist);margin-top:3px}
.logotype--footer .logotype__mark{font-size:22px}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;border:1px solid var(--line-steel);color:var(--frost);
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:var(--cyan);
  transition:transform .2s var(--ease),top .2s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:9px}
.site-header[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

.site-nav{display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  position:relative;display:inline-flex;flex-direction:column;gap:1px;
  padding:8px 10px;font-size:13.5px;font-weight:600;letter-spacing:.05em;color:var(--mist);
  border:1px solid transparent;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-nav__num{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;color:#3A4C78;transition:color var(--dur) var(--ease)}
.site-nav__link:hover{color:var(--frost);background:rgba(47,230,214,.06);border-color:var(--line-steel)}
.site-nav__link:hover .site-nav__num{color:var(--cyan)}
.site-nav__link[aria-current="page"]{color:var(--frost);background:rgba(47,230,214,.1);border-color:var(--cyan)}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{content:"";position:absolute;left:-1px;right:-1px;bottom:-1px;height:2px;background:var(--cyan)}

.site-nav__quick{display:flex;flex-wrap:wrap;gap:6px;padding-left:clamp(8px,1.2vw,16px);border-left:1px solid var(--line-steel)}
.quick-link{
  font-size:12px;letter-spacing:.08em;color:var(--mist);
  padding:5px 10px;border:1px dashed var(--line-steel);border-radius:999px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.quick-link:hover{color:var(--cyan);border-color:var(--cyan);border-style:solid;background:rgba(47,230,214,.07)}
.site-nav__cta{white-space:nowrap}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(56px,8vw,120px);
  background:linear-gradient(180deg,#050A18,#0C1730 58%,#050A18);
  border-top:1px solid var(--line-steel);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto;height:6px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 1px,transparent 1px 26px);
  opacity:.3;pointer-events:none;
}
.site-footer__inner{max-width:var(--shell);margin-inline:auto;padding:clamp(40px,5vw,72px) var(--gutter) 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,minmax(0,1fr));gap:clamp(24px,3vw,48px)}
.footer-brand__desc{margin-top:14px;font-size:14px;line-height:1.7;color:var(--mist);max-width:30ch}
.footer-status{display:flex;align-items:center;gap:9px;margin-top:16px;font-size:12px;letter-spacing:.08em;color:var(--mist)}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--verify);box-shadow:0 0 0 3px rgba(125,224,166,.16);animation:status-pulse 2.6s ease-in-out infinite}
.footer-status__text{color:var(--mist)}
@keyframes status-pulse{0%,100%{opacity:1}50%{opacity:.45}}
.footer-col__title{
  font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--frost);
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line-steel);
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-link{font-size:14px;color:var(--mist);transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease)}
.footer-link:hover{color:var(--cyan);padding-left:4px}
.footer-col__text{font-size:14px;color:#5E6E92}
.footer-contact{
  margin-top:clamp(32px,4vw,56px);padding-top:clamp(24px,3vw,36px);
  border-top:1px solid var(--line-steel);
}
.footer-contact__title{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--ember);margin-bottom:16px}
.footer-contact__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.footer-contact__item{display:flex;flex-direction:column;gap:6px}
.footer-contact__label{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist)}
.footer-contact__value{font-size:14px;line-height:1.6;color:var(--frost);padding:8px 10px;background:rgba(12,23,48,.85);border:1px solid var(--line-steel)}
.footer-contact__note{margin-top:16px;font-size:13px;line-height:1.75;color:var(--mist);max-width:78ch}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  margin-top:clamp(28px,3.5vw,44px);padding-top:18px;
  border-top:1px solid var(--line-steel);
  font-size:12.5px;color:var(--mist);
}
.footer-legal__line{font-family:var(--font-mono);letter-spacing:.06em}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.footer-legal__links .footer-link{font-size:12.5px}
.footer-legal__links .footer-link:hover{padding-left:0}

/* ---------- 14. 响应式 ---------- */
@media (min-width:1025px) and (max-width:1279px){
  .site-nav__quick{display:none}
}
@media (max-width:1024px){
  :root{--header-h:104px}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .commandbar__inner{padding-block:9px}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:5;
    display:grid;gap:0;margin:0;padding:0 var(--gutter);
    background:linear-gradient(180deg,#0A1428,#050A18);
    border-bottom:1px solid var(--line-steel);
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .3s var(--ease),visibility .3s var(--ease);
  }
  .site-header[data-open] .site-nav{max-height:min(78vh,660px);overflow-y:auto;visibility:visible;padding-bottom:20px}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;padding-top:6px}
  .site-nav__item+.site-nav__item{border-top:1px solid rgba(35,50,90,.7)}
  .site-nav__link{flex-direction:row;align-items:center;gap:14px;padding:14px 4px;font-size:16px;border:0}
  .site-nav__link[aria-current="page"]{background:rgba(47,230,214,.08);border-left:2px solid var(--cyan)}
  .site-nav__link[aria-current="page"]::after{display:none}
  .site-nav__quick{padding:16px 0 4px;border-left:0;border-top:1px solid var(--line-steel);margin-top:12px}
  .site-nav__cta{width:100%;margin-top:16px;padding:14px 18px;font-size:14px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-contact__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:minmax(0,1fr)}
  .index-rail{position:static;flex-direction:row;flex-wrap:wrap;align-items:center;gap:14px}
  .rail-nav{flex-direction:row;flex-wrap:wrap;gap:14px}
}
@media (max-width:900px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .col-4,.col-5,.col-6,.col-7,.col-8{grid-column:span 12}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.8}
  .ticker{--ticker-gap:22px;max-height:44px}
  .ticker__item{font-size:11px}
  .logotype__text{font-size:13.5px}
  .logotype__mark{font-size:16px;padding:5px 7px}
  .footer-grid,.footer-contact__grid{grid-template-columns:minmax(0,1fr)}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .footer-legal__links{margin-left:0;gap:14px}
  .section-head__meta{margin-left:0;width:100%}
}

/* ---------- 15. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .ticker__track{animation:none}
  .status-dot{animation:none}
  .card:hover{transform:none}
  .reveal,[data-reveal]{opacity:1;transform:none}
}