/* =========================================================
   NG赛场 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 页头 / 页脚 / 基础组件
   ========================================================= */

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

/* ---------- 2. 变量 ---------- */
:root{
  --ink-900:#04150F;
  --ink-800:#07231A;
  --grass-700:#0E3A2B;
  --cyan-signal:#35F2D0;
  --cyan-dim:#1FA98F;
  --amber-count:#FFB020;
  --amber-deep:#C97B12;
  --chalk-100:#F2F7F4;
  --chalk-400:#A8BDB4;
  --glass:rgba(242,247,244,.06);
  --line:rgba(53,242,208,.22);

  --rail-w:84px;
  --bar-h:56px;
  --edge:clamp(20px,4.6vw,88px);
  --maxw:1360px;

  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-head:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --cut:22px;
  --cut-s:12px;
  --ease:cubic-bezier(.32,.72,.28,1);
}

/* ---------- 3. 基础排版 ---------- */
html{scroll-padding-top:calc(var(--bar-h) + 16px)}
body{
  margin:0;
  padding-top:var(--bar-h);
  padding-left:var(--rail-w);
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:repeating-linear-gradient(90deg,
    rgba(14,58,43,.34) 0 64px,
    rgba(4,21,15,0) 64px 128px);
  background-attachment:fixed;
  color:var(--chalk-100);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
h1,h2,h3,h4,h5{font-family:var(--font-head);font-weight:800;line-height:1.2;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.5rem,3vw,2.3rem)}
h3{font-size:clamp(1.15rem,1.9vw,1.5rem)}
p{max-width:70ch}
::selection{background:var(--cyan-signal);color:var(--ink-900)}

a{color:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--cyan-signal);
  outline-offset:3px;
}
#main-content{display:block;scroll-margin-top:calc(var(--bar-h) + 12px)}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:120;
  padding:.6em 1.1em;
  background:var(--cyan-signal);color:var(--ink-900);
  font-weight:800;font-size:14px;letter-spacing:.06em;text-decoration:none;
  transform:translateY(-220%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 5. 页头：顶部状态条 + 左侧栏目轨道 ---------- */
.site-header{position:fixed;inset:0;z-index:60;pointer-events:none}

.status-bar{
  pointer-events:auto;
  position:absolute;top:0;left:0;right:0;
  height:var(--bar-h);
  display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);
  padding:0 clamp(12px,2vw,24px);
  background:rgba(4,21,15,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 20px 44px -30px rgba(53,242,208,.45);
}
.status-bar__brand{display:flex;align-items:center;gap:12px;max-width:none;margin:0;flex:0 0 auto;min-width:0}
.brand-mark{
  display:inline-block;
  font-family:var(--font-head);font-weight:900;
  font-size:20px;letter-spacing:.08em;line-height:1;
  color:var(--chalk-100);text-decoration:none;
  transform:skewX(-4deg);
  transition:color .16s var(--ease),text-shadow .16s var(--ease);
}
.brand-mark:hover{color:var(--cyan-signal);text-shadow:0 0 22px rgba(53,242,208,.4)}
.brand-line{
  font-size:11px;letter-spacing:.24em;color:var(--chalk-400);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  border-left:1px solid var(--line);padding-left:12px;
}
.status-bar__meter{display:flex;align-items:center;gap:10px;margin-left:auto;min-width:0}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--chalk-400);
  font-size:12px;letter-spacing:.08em;line-height:1.6;
  text-decoration:none;white-space:nowrap;
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.chip:hover{color:var(--cyan-signal);border-color:var(--cyan-dim);background:rgba(53,242,208,.08)}
.chip--live::before{
  content:"";width:6px;height:6px;flex:0 0 auto;
  background:var(--cyan-signal);
  box-shadow:0 0 0 3px rgba(53,242,208,.18);
}
.chip--time .num{color:var(--amber-count);font-size:13px}
.status-bar__progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan-signal),var(--amber-count));
}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  margin-left:4px;padding:8px 12px;
  color:var(--chalk-100);
  border:1px solid var(--line);
  background:var(--glass);
  font-size:13px;letter-spacing:.14em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan-dim);background:rgba(53,242,208,.1)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:var(--cyan-signal);transition:opacity .16s var(--ease),transform .16s var(--ease)}
.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)}

.rail-nav{
  pointer-events:auto;
  position:absolute;top:var(--bar-h);left:0;bottom:0;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:stretch;
  padding:14px 0 10px;
  background:rgba(4,21,15,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.rail-nav__annot{
  writing-mode:vertical-rl;transform:rotate(180deg);
  align-self:center;
  font-size:10px;letter-spacing:.28em;line-height:1;
  color:var(--cyan-dim);
  padding-bottom:18px;
}
.rail-nav__list{display:flex;flex:1 1 auto;flex-direction:column;gap:4px;padding:0 6px}
.rail-nav__link{
  display:flex;flex-direction:column;align-items:flex-start;gap:2px;
  padding:10px 8px;
  color:var(--chalk-400);
  font-size:13px;line-height:1.35;text-decoration:none;
  border-left:2px solid transparent;
  transition:color .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease);
}
.rail-nav__idx{font-family:var(--font-num);font-size:9px;letter-spacing:.14em;opacity:.6}
.rail-nav__label{letter-spacing:.02em}
.rail-nav__link:hover{color:var(--chalk-100);background:var(--glass);border-left-color:var(--cyan-dim)}
.rail-nav__link[aria-current="page"]{
  color:var(--ink-900);
  background:var(--cyan-signal);
  border-left-color:var(--cyan-signal);
  font-weight:800;
}
.rail-nav__link[aria-current="page"] .rail-nav__idx{opacity:.75;color:var(--ink-900)}
.rail-nav__foot{
  align-self:center;padding-top:14px;
  font-family:var(--font-num);font-size:9px;letter-spacing:.14em;
  color:var(--chalk-400);opacity:.55;
}
.nav-scrim{
  pointer-events:auto;
  position:absolute;inset:var(--bar-h) 0 0 0;z-index:1;
  background:rgba(4,21,15,.72);
  opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.nav-scrim[data-open="true"]{opacity:1;visibility:visible}

/* ---------- 6. 页脚：比分板横排 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  border-top:1px solid var(--cyan-dim);
  background:
    linear-gradient(180deg,rgba(7,35,26,.95),rgba(4,21,15,.98)),
    repeating-linear-gradient(90deg,rgba(14,58,43,.5) 0 48px,rgba(4,21,15,0) 48px 96px);
}
.footer-board{padding-block:clamp(28px,4.6vw,56px) clamp(22px,3vw,38px)}
.footer-board__head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;padding-bottom:clamp(18px,2.6vw,30px)}
.footer-brand{
  font-family:var(--font-head);font-weight:900;
  font-size:clamp(1.5rem,3.4vw,2.2rem);line-height:1;letter-spacing:.06em;
  transform:skewX(-4deg);max-width:none;
}
.footer-brand__line{font-size:11px;letter-spacing:.26em;color:var(--chalk-400);max-width:none}
.footer-board__grid{
  display:grid;gap:clamp(24px,3vw,52px);
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  align-items:start;
}
.footer-nav{display:grid;gap:0}
.footer-nav__group{
  display:grid;grid-template-columns:104px minmax(0,1fr);align-items:baseline;
  gap:14px;padding-block:12px;border-top:1px solid var(--line);
}
.footer-nav__group:last-child{border-bottom:1px solid var(--line)}
.footer-nav__title{
  margin:0;font-size:10px;font-weight:600;letter-spacing:.28em;
  color:var(--cyan-dim);text-transform:none;
}
.footer-nav__list{display:flex;flex-wrap:wrap;gap:6px 22px}
.footer-link{
  color:var(--chalk-400);font-size:14px;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--cyan-signal);border-bottom-color:var(--cyan-signal)}
.footer-contact{
  font-style:normal;
  display:grid;gap:8px;
  padding:clamp(16px,2vw,24px);
  background:var(--glass);
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.footer-contact__row{display:flex;gap:12px;align-items:baseline;font-size:14px;max-width:none}
.footer-contact__key{
  flex:0 0 auto;min-width:38px;
  font-size:10px;letter-spacing:.24em;color:var(--chalk-400);
}
.footer-contact__val{color:var(--chalk-100);word-break:break-word}
.footer-contact__note{
  margin-top:6px;padding-top:10px;border-top:1px dashed var(--line);
  font-size:12px;line-height:1.7;color:var(--chalk-400);max-width:52ch;
}
.footer-legal{border-top:1px solid var(--line);background:rgba(4,21,15,.72)}
.footer-legal__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  padding-block:18px 26px;
  font-size:12px;letter-spacing:.08em;color:var(--chalk-400);
}
.footer-legal__icp,.footer-legal__copy{margin:0;max-width:none;font-family:var(--font-num);font-size:12px}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-left:auto}
.footer-legal__links .footer-link{font-size:12px;letter-spacing:.08em}

.to-top{
  position:fixed;right:clamp(14px,2.4vw,28px);bottom:clamp(14px,2.4vw,28px);z-index:55;
  padding:10px 16px;
  background:var(--ink-800);color:var(--cyan-signal);
  border:1px solid var(--cyan-dim);
  font-size:12px;letter-spacing:.18em;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.to-top:hover{background:var(--cyan-signal);color:var(--ink-900);border-color:var(--cyan-signal)}

/* ---------- 7. 通用布局 ---------- */
.container{
  width:100%;max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--edge);
}
.section{padding-block:clamp(52px,7vw,104px)}
.section--tight{padding-block:clamp(30px,4vw,58px)}
.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid--split{grid-template-columns:minmax(0,3fr) minmax(0,1fr)}
.grid--half{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 8. 层级与卡片 ---------- */
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.panel{
  background:var(--ink-800);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,32px);
}
.cut-card{
  background:var(--glass);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,32px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.cut-card--flip{
  background:var(--ink-800);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,32px);
  clip-path:polygon(var(--cut) 0,100% 0,100% 100%,0 100%,0 var(--cut));
}
.score-cut{
  clip-path:polygon(0 0,100% 0,100% 100%,44px 100%,0 calc(100% - 44px));
}

/* ---------- 9. 文字组件 ---------- */
.display{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(2.4rem,7vw,6.2rem);
  line-height:.94;
  letter-spacing:-.02em;
  transform:skewX(-3deg);
  margin:0;
}
.lede{font-size:clamp(1.02rem,1.6vw,1.2rem);line-height:1.7;color:var(--chalk-400);max-width:62ch}
.annot{
  display:inline-block;
  font-size:11px;letter-spacing:.28em;line-height:1.6;
  color:var(--cyan-dim);
}
.annot--vertical{writing-mode:vertical-rl;transform:rotate(180deg)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.num-xl{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(2rem,5.2vw,4.6rem);line-height:1;
  letter-spacing:.02em;color:var(--amber-count);
}
.section-head{display:grid;gap:8px;margin-bottom:clamp(20px,3vw,40px)}
.section-head__idx{
  font-family:var(--font-num);
  font-size:clamp(2.6rem,8vw,6.4rem);
  line-height:.82;letter-spacing:-.02em;
  color:var(--grass-700);
  -webkit-text-stroke:1px var(--line);
}

/* ---------- 10. 按钮与链接 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;
  padding:.74em 1.4em;
  font-size:15px;font-weight:700;letter-spacing:.05em;line-height:1.2;
  text-decoration:none;
  color:var(--cyan-signal);
  border:1px solid var(--cyan-dim);
  background:transparent;
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut-s)),calc(100% - var(--cut-s)) 100%,0 100%);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{background:rgba(53,242,208,.12);border-color:var(--cyan-signal);color:var(--chalk-100)}
.btn--signal{background:var(--cyan-signal);color:var(--ink-900);border-color:var(--cyan-signal)}
.btn--signal:hover{background:transparent;color:var(--cyan-signal)}
.btn--ghost{color:var(--chalk-400);border-color:var(--line)}
.btn--ghost:hover{color:var(--chalk-100);border-color:var(--cyan-dim);background:var(--glass)}
.btn--amber{background:var(--amber-count);color:#1B1204;border-color:var(--amber-count)}
.btn--amber:hover{background:var(--amber-deep);border-color:var(--amber-deep);color:#1B1204}
.link-signal{
  color:var(--cyan-signal);text-decoration:none;
  border-bottom:1px solid var(--line);
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.link-signal:hover{color:var(--chalk-100);border-bottom-color:var(--cyan-signal)}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb{font-size:12px;letter-spacing:.14em;color:var(--chalk-400);margin-bottom:clamp(14px,2vw,24px)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:.2em .6em;align-items:center}
.breadcrumb li{display:flex;align-items:center;gap:.6em}
.breadcrumb li+li::before{content:"/";color:var(--cyan-dim)}
.breadcrumb a{color:var(--chalk-400);text-decoration:none;transition:color .16s var(--ease)}
.breadcrumb a:hover{color:var(--cyan-signal)}
.breadcrumb [aria-current="page"]{color:var(--chalk-100)}

/* ---------- 12. 分段控件 / 清单 / 时间轴 ---------- */
.seg{display:inline-flex;flex-wrap:wrap;border:1px solid var(--line);background:var(--glass)}
.seg__btn{
  padding:.6em 1.2em;
  font-size:13px;letter-spacing:.14em;
  color:var(--chalk-400);
  border-right:1px solid var(--line);
  transition:background-color .16s var(--ease),color .16s var(--ease);
}
.seg__btn:last-child{border-right:0}
.seg__btn:hover{color:var(--chalk-100);background:rgba(53,242,208,.08)}
.seg__btn[aria-selected="true"]{background:var(--cyan-signal);color:var(--ink-900);font-weight:800}
.seg-panel{padding-top:clamp(16px,2vw,26px)}

.check-item{
  display:flex;align-items:center;gap:12px;width:100%;
  padding:14px 16px;text-align:left;
  color:var(--chalk-100);font-size:15px;
  border:1px solid var(--line);background:transparent;
  transition:background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.check-item::before{
  content:"";flex:0 0 auto;width:12px;height:12px;
  border:1px solid var(--cyan-dim);
  transition:background-color .16s var(--ease),box-shadow .16s var(--ease);
}
.check-item:hover{border-color:var(--cyan-signal);background:var(--glass)}
.check-item[aria-pressed="true"]{border-color:var(--cyan-signal);background:rgba(53,242,208,.1)}
.check-item[aria-pressed="true"]::before{background:var(--amber-count);border-color:var(--amber-count);box-shadow:0 0 0 3px rgba(255,176,32,.2)}

.timeline{display:grid;gap:clamp(14px,2vw,24px);padding-left:26px;border-left:1px solid var(--line)}
.timeline__item{position:relative}
.timeline__item::before{
  content:"";position:absolute;left:-31px;top:9px;width:9px;height:9px;
  background:var(--grass-700);border:1px solid var(--cyan-dim);
}
.timeline__item.is-now::before{background:var(--amber-count);border-color:var(--amber-count)}

/* ---------- 13. 数据表 ---------- */
.table{font-size:15px}
.table th,.table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:baseline}
.table thead th{font-size:10px;letter-spacing:.24em;font-weight:600;color:var(--chalk-400)}
.table tbody tr{transition:background-color .16s var(--ease)}
.table tbody tr:hover{background:var(--glass)}
.table td .num{color:var(--chalk-100)}

/* ---------- 14. 视觉容器（供页面阶段放图） ---------- */
.img-frame{
  position:relative;overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--line);
  aspect-ratio:16/9;
}
.img-frame img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.92) contrast(1.06) brightness(.94);
}
.img-frame::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(4,21,15,0),rgba(4,21,15,.82));
  pointer-events:none;
}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%)}
.img-frame__cap{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-size:10px;letter-spacing:.28em;color:var(--chalk-400);
}
.field-strip{
  height:10px;
  background:repeating-linear-gradient(90deg,var(--grass-700) 0 40px,rgba(14,58,43,.22) 40px 80px);
}

/* ---------- 15. 显现 ---------- */
.has-js .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.has-js .reveal.is-in{opacity:1;transform:none}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1080px){
  .grid--thirds{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-board__grid{grid-template-columns:minmax(0,1fr)}
  .footer-contact{max-width:620px}
}
@media (max-width:900px){
  :root{--rail-w:0px}
  body{padding-left:0;font-size:16px}
  body.nav-open{overflow:hidden}
  .nav-toggle{display:inline-flex}
  .brand-line{display:none}
  .rail-nav{
    left:auto;right:0;top:var(--bar-h);bottom:0;
    width:min(86vw,340px);
    z-index:2;
    padding:6px 0 24px;
    background:rgba(7,35,26,.98);
    border-right:0;border-left:1px solid var(--line);
    transform:translateX(105%);
    transition:transform .24s var(--ease);
    overscroll-behavior:contain;
  }
  .rail-nav[data-open="true"]{transform:translateX(0)}
  .rail-nav__annot{
    writing-mode:horizontal-tb;transform:none;
    align-self:flex-start;padding:18px 20px 6px;
    font-size:10px;
  }
  .rail-nav__list{flex:0 0 auto;padding:6px 14px;gap:0}
  .rail-nav__link{
    flex-direction:row;align-items:baseline;gap:12px;
    padding:15px 12px;font-size:17px;
    border-left:0;border-bottom:1px solid var(--line);
  }
  .rail-nav__link[aria-current="page"]{border-bottom-color:var(--cyan-signal)}
  .rail-nav__idx{font-size:10px}
  .rail-nav__foot{display:none}
  .grid--split,.grid--half{grid-template-columns:minmax(0,1fr)}
  .footer-nav__group{grid-template-columns:minmax(0,1fr);gap:6px;padding-block:14px}
  .footer-legal__links{margin-left:0}
  .to-top{right:14px;bottom:14px}
}
@media (max-width:640px){
  .chip--live{display:none}
  .grid--thirds{grid-template-columns:minmax(0,1fr)}
  .table--fold thead{display:none}
  .table--fold tr{display:block;padding:10px 0;border-bottom:1px solid var(--line)}
  .table--fold td{
    display:flex;justify-content:space-between;gap:16px;
    padding:6px 0;border-bottom:0;font-size:14px;
  }
  .table--fold td::before{
    content:attr(data-label);
    font-size:10px;letter-spacing:.22em;color:var(--chalk-400);
    flex:0 0 auto;
  }
  .status-bar{padding-inline:12px}
  .brand-mark{font-size:17px}
}

/* ---------- 17. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html{scroll-behavior:auto}
  .has-js .reveal{opacity:1;transform:none}
  .rail-nav{transition:none}
}