/* ============================================================
   杏运看台 · 共享样式 /assets/site.css
   底层秩序：技术蓝图细线网格 / 看台 6° 斜切 / 比分牌等宽数字
   ============================================================ */

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%}

:root{
  /* 色彩体系 */
  --apricot:#F6A623;
  --apricot-mid:#E9832B;
  --apricot-deep:#C6432F;
  --honey:#FDF1DF;
  --paper:#FFFBF5;
  --ink:#141A17;
  --night:#0E2A25;
  --night-deep:#0A1F1B;
  --steel:#46627A;
  --steel-soft:#7C8FA0;
  --mint:#35EFC0;
  --lamp:#FFD166;

  /* 排版 */
  --font-body:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:ui-monospace,"JetBrains Mono","DIN Alternate",Menlo,Consolas,"Courier New",monospace;

  /* 结构 */
  --rail-w:240px;
  --rail-collapsed:88px;
  --topbar-h:64px;
  --container:1200px;
  --gutter:clamp(1.15rem,4vw,2.75rem);
  --cut-h:3.25rem;
  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --pill:999px;
  --hairline:1px solid rgba(70,98,122,.26);
  --hairline-dark:1px solid rgba(255,251,245,.16);
}
html[data-rail="collapsed"]{--rail-w:var(--rail-collapsed)}

/* ---------------- 基础排版 ---------------- */
body{
  padding-left:var(--rail-w);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(15px,.93rem + .12vw,17px);
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  transition:padding-left .24s ease;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.02em;
}
h1{font-size:clamp(2.1rem,5.2vw,3.9rem)}
h2{font-size:clamp(1.6rem,3.2vw,2.5rem)}
h3{font-size:clamp(1.2rem,2vw,1.5rem)}
p{margin:0 0 1.1em}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{width:100%;border-collapse:collapse}
time{font-variant-numeric:tabular-nums}
::selection{background:var(--apricot);color:var(--ink)}

:focus-visible{outline:2px solid var(--apricot-deep);outline-offset:3px;border-radius:4px}
.site-rail :focus-visible,
.band--night :focus-visible,
.foot-band :focus-visible{outline-color:var(--mint)}

.display{font-size:clamp(2.5rem,7vw,5.4rem);line-height:.95;letter-spacing:-.03em}
.num{font-family:var(--font-num);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.eyebrow{font-family:var(--font-num);font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--steel);margin:0 0 .8em}
.eyebrow--lamp{color:var(--lamp)}
.eyebrow--side{writing-mode:vertical-rl;letter-spacing:.34em;text-transform:none;margin:0}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}

/* ---------------- 布局原语 ---------------- */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.container--wide{max-width:1440px}
.section{padding-block:clamp(3.2rem,7vw,6rem)}
.section--tight{padding-block:clamp(2rem,4vw,3.2rem)}
.band{position:relative}
.band--honey{background:var(--honey)}
.band--paper{background:var(--paper)}
.band--night{background:var(--night);color:var(--paper)}
.band--night h1,.band--night h2,.band--night h3{color:var(--paper)}
.band--night p{color:rgba(255,251,245,.82)}

.blueprint{
  --grid-line:rgba(70,98,122,.16);
  background-image:linear-gradient(to right,var(--grid-line) 1px,transparent 1px),
                   linear-gradient(to bottom,var(--grid-line) 1px,transparent 1px);
  background-size:48px 48px;
}
.blueprint--night{--grid-line:rgba(255,251,245,.07)}

.cut-top{clip-path:polygon(0 var(--cut-h),100% 0,100% 100%,0 100%)}
.cut-bottom{clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut-h)),0 100%)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2vw,1.6rem)}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

.auto-grid{display:grid;gap:clamp(1rem,2.4vw,1.8rem);grid-template-columns:repeat(auto-fit,minmax(var(--min,260px),1fr))}

.rule{height:1px;border:0;margin-block:1.5rem;background:rgba(70,98,122,.26)}
.rule--dark{background:rgba(255,251,245,.18)}

/* ---------------- 通用组件 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.35rem;border-radius:var(--pill);border:1px solid transparent;
  font-family:var(--font-display);font-weight:700;font-size:.95rem;line-height:1.25;
  text-align:center;color:var(--ink);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--apricot);color:var(--ink);box-shadow:0 12px 26px -16px rgba(198,67,47,.85)}
.btn--primary:hover{background:var(--apricot-mid)}
.btn--outline{border-color:rgba(70,98,122,.5);color:var(--ink)}
.btn--outline:hover{border-color:var(--apricot-deep);color:var(--apricot-deep)}
.btn--night{background:var(--night);color:var(--paper)}
.btn--night:hover{background:var(--apricot-deep)}
.btn--mint{background:var(--mint);color:var(--night)}
.btn--mint:hover{background:var(--lamp)}
.btn--sm{padding:.5rem 1rem;font-size:.83rem}
.btn--block{width:100%}

.chips{display:flex;flex-wrap:wrap;gap:.5rem}
.chip{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.45rem 1rem;border-radius:var(--pill);
  border:1px solid rgba(70,98,122,.35);
  font-size:.86rem;color:var(--ink);
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.chip:hover{border-color:var(--apricot-deep);color:var(--apricot-deep)}
.chip[aria-pressed="true"]{background:var(--apricot);border-color:var(--apricot);color:var(--ink);font-weight:700}

.segmented{
  position:relative;display:inline-flex;gap:.25rem;padding:.3rem;
  border-radius:var(--pill);background:rgba(70,98,122,.12);
}
.band--night .segmented{background:rgba(255,251,245,.1)}
.segmented__item{
  padding:.5rem 1.1rem;border-radius:var(--pill);
  font-family:var(--font-display);font-weight:700;font-size:.9rem;color:var(--steel);
  transition:background-color .18s ease,color .18s ease;
}
.band--night .segmented__item{color:rgba(255,251,245,.72)}
.segmented__item:hover{color:var(--ink)}
.band--night .segmented__item:hover{color:var(--paper)}
.segmented__item[aria-selected="true"]{background:var(--night);color:var(--paper)}
.band--night .segmented__item[aria-selected="true"]{background:var(--apricot);color:var(--ink)}
.segmented::after{
  content:"";position:absolute;left:var(--tab-x,0);width:var(--tab-w,0);bottom:.2rem;height:2px;
  background:var(--mint);border-radius:2px;opacity:0;pointer-events:none;
  transition:left .22s ease,width .22s ease,opacity .18s ease;
}
.segmented[data-ready="true"]::after{opacity:1}
.tabpanel{padding-top:1.4rem}
.tabpanel[hidden]{display:none}

.scoreboard{
  display:flex;align-items:center;gap:1rem;flex-wrap:wrap;
  padding:1rem 1.25rem;border-radius:22px;
  background:var(--night);color:var(--paper);
  border:1px solid rgba(246,166,35,.42);
}
.scoreboard--alt{background:var(--apricot-deep);border-color:rgba(255,251,245,.32)}
.scoreboard__team{font-family:var(--font-display);font-weight:700}
.score-num{font-family:var(--font-num);font-weight:700;font-size:clamp(2rem,6vw,3.4rem);line-height:.9;letter-spacing:-.02em}
.stamp{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--font-num);font-size:.72rem;letter-spacing:.14em;color:var(--steel)}
.stamp--live{color:var(--mint)}

.ticker{position:relative;overflow:hidden;border-radius:var(--radius-md);background:var(--night);color:var(--paper)}
.ticker__track{display:flex;gap:2.5rem;width:max-content;padding:.85rem 1.2rem;animation:ticker-run 46s linear infinite}
.ticker:hover .ticker__track,.ticker:focus-within .ticker__track{animation-play-state:paused}
.ticker__item{display:inline-flex;align-items:center;gap:.6rem;white-space:nowrap;font-size:.92rem}
.ticker__item .num{color:var(--lamp)}
@keyframes ticker-run{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-family:var(--font-num);font-size:.74rem;letter-spacing:.1em;color:var(--steel)}
.crumbs li{display:flex;align-items:center;gap:.5rem}
.crumbs li + li::before{content:"/";color:var(--steel-soft)}
.crumbs a:hover{color:var(--apricot-deep)}
.crumbs [aria-current="page"]{color:var(--ink)}

.panel{
  padding:clamp(1.2rem,3vw,2rem);
  border:var(--hairline);border-radius:var(--radius-lg);background:var(--paper);
}
.panel--honey{background:var(--honey);border-color:rgba(198,67,47,.2)}
.panel--night{background:var(--night);color:var(--paper);border-color:rgba(53,239,192,.24)}
.panel--night p{color:rgba(255,251,245,.82)}

.prose{max-width:68ch}
.prose p{margin:0 0 1.25em}
.prose h2,.prose h3{margin-top:2.2em}
.prose ul{list-style:disc;padding-left:1.2em;margin:0 0 1.3em}
.prose li{margin-bottom:.5em}

.img-frame{
  position:relative;isolation:isolate;overflow:hidden;
  border-radius:var(--radius-lg);background:var(--night);
  aspect-ratio:16/9;width:100%;
}
.img-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.06) brightness(.86);transition:transform .4s ease}
.img-frame:hover img{transform:scale(1.03)}
.img-frame--wide{aspect-ratio:21/9}
.img-frame--tall{aspect-ratio:4/5}
.img-frame--square{aspect-ratio:1/1}
.img-frame__overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,42,37,0) 34%,rgba(14,42,37,.84) 100%)}
.img-frame__num{
  position:absolute;right:1rem;top:.7rem;
  font-family:var(--font-num);font-weight:700;font-size:clamp(1.6rem,4vw,2.6rem);
  color:rgba(255,251,245,.52);letter-spacing:-.02em;
}
.img-frame__stamp{
  position:absolute;left:1rem;right:1rem;bottom:.9rem;
  display:flex;align-items:center;gap:.6rem;
  font-family:var(--font-num);font-size:.74rem;letter-spacing:.16em;color:var(--lamp);
}

html[data-js="on"] [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease}
html[data-js="on"] [data-reveal].is-visible{opacity:1;transform:none}

/* ---------------- 头部：侧边轨道 ---------------- */
.skip-link{
  position:fixed;top:.75rem;left:.75rem;z-index:120;
  padding:.6rem 1.05rem;border-radius:var(--pill);
  background:var(--mint);color:var(--night);font-weight:700;font-size:.9rem;
  transform:translateY(-190%);
  transition:transform .18s ease;
}
.skip-link:focus{transform:none;outline:2px solid var(--night);outline-offset:2px}

.scroll-meter{
  position:fixed;top:0;left:var(--rail-w);right:0;height:3px;z-index:70;
  background:rgba(70,98,122,.2);pointer-events:none;
  transition:left .24s ease;
}
.scroll-meter__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--apricot) 0%,var(--apricot-mid) 48%,var(--apricot-deep) 100%);
}

.site-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:60;
  width:var(--rail-w);
  display:flex;flex-direction:column;gap:1rem;
  padding:1.15rem 1rem 1.15rem;
  background:var(--night);color:var(--paper);
  border-right:1px solid rgba(53,239,192,.18);
  transition:width .24s ease;
}
.site-rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to bottom,rgba(255,251,245,.055) 1px,transparent 1px);
  background-size:100% 48px;
}
.rail-head{position:relative;z-index:3;display:flex;align-items:center;gap:.6rem}

.brand{display:flex;align-items:center;gap:.65rem;min-width:0;color:var(--paper)}
.brand-mark{
  flex:0 0 auto;display:grid;place-items:center;width:44px;height:44px;border-radius:14px;
  background:linear-gradient(140deg,var(--apricot) 0%,var(--apricot-mid) 55%,var(--apricot-deep) 100%);
  color:var(--ink);font-family:var(--font-display);font-weight:900;font-size:1.35rem;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:1.06rem;letter-spacing:.02em;white-space:nowrap}
.brand-sub{font-size:.6rem;letter-spacing:.22em;color:rgba(255,251,245,.55);white-space:nowrap}

.rail-toggle{display:none;margin-left:auto;width:34px;height:34px;border-radius:12px;border:1px solid rgba(255,251,245,.22);align-items:center;justify-content:center;transition:border-color .18s ease}
.rail-toggle:hover{border-color:var(--mint)}
.rail-toggle__bars{width:11px;height:11px;border-left:2px solid var(--mint);border-bottom:2px solid var(--mint);transform:rotate(45deg);transition:transform .2s ease}
html[data-rail="collapsed"] .rail-toggle__bars{transform:rotate(-135deg)}

.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border-radius:14px;border:1px solid rgba(255,251,245,.22);align-items:center;justify-content:center}
.nav-toggle__bars{position:relative;display:block;width:16px;height:2px;border-radius:2px;background:var(--paper);transition:background-color .2s ease}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:var(--paper);
  transition:transform .2s ease,top .2s ease,background-color .2s ease;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-rail[data-open="true"] .nav-toggle__bars{background:transparent}
.site-rail[data-open="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg);background:var(--mint)}
.site-rail[data-open="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg);background:var(--mint)}

.rail-nav{position:relative;z-index:2;flex:1 1 auto;min-height:0;overflow-y:auto;padding-block:.25rem}
.rail-nav__caption{
  font-family:var(--font-num);font-size:.62rem;letter-spacing:.3em;text-transform:uppercase;
  color:rgba(255,251,245,.42);margin:.2rem .5rem .6rem;
}
.rail-list{display:flex;flex-direction:column;gap:.15rem}
.rail-item{display:block}
.rail-link{
  position:relative;display:grid;grid-template-columns:32px 1fr 8px;align-items:center;gap:.55rem;
  padding:.62rem .7rem;border-radius:16px;
  color:rgba(255,251,245,.74);
  transition:background-color .18s ease,color .18s ease;
}
.rail-link:hover{background:rgba(246,166,35,.16);color:var(--paper)}
.rail-index{font-size:.7rem;color:rgba(255,251,245,.42)}
.rail-label{font-family:var(--font-display);font-weight:700;font-size:.98rem;white-space:nowrap}
.rail-dot{justify-self:end;width:7px;height:7px;border-radius:50%;background:rgba(255,251,245,.22)}
.rail-link[aria-current="page"]{background:rgba(53,239,192,.12);color:var(--paper)}
.rail-link[aria-current="page"] .rail-index{color:var(--mint)}
.rail-link[aria-current="page"] .rail-dot{background:var(--mint);box-shadow:0 0 0 4px rgba(53,239,192,.16)}
.rail-link[aria-current="page"]::before{
  content:"";position:absolute;left:-1rem;top:.5rem;bottom:.5rem;width:3px;border-radius:3px;background:var(--apricot);
}

.rail-status{
  position:relative;z-index:2;display:flex;flex-direction:column;gap:.3rem;
  padding-top:.75rem;border-top:1px solid rgba(255,251,245,.14);
}
.rail-status__line{display:flex;align-items:center;gap:.45rem;margin:0;font-size:.74rem;color:rgba(255,251,245,.66)}
.rail-status__line--num{font-family:var(--font-num);letter-spacing:.04em}
.live-dot{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 3px rgba(53,239,192,.18);
  animation:live-pulse 6s ease-in-out infinite;
}
@keyframes live-pulse{0%,84%,100%{transform:scale(1);opacity:.78}92%{transform:scale(1.04);opacity:1}}

.rail-cta{position:relative;z-index:3}
.rail-scrim{display:none}

html[data-rail="collapsed"] .brand-text,
html[data-rail="collapsed"] .rail-nav__caption,
html[data-rail="collapsed"] .rail-label{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0;
}
html[data-rail="collapsed"] .rail-head{flex-direction:column;gap:.6rem;justify-content:center}
html[data-rail="collapsed"] .rail-toggle{margin-left:0}
html[data-rail="collapsed"] .rail-status{display:none}
html[data-rail="collapsed"] .rail-link{grid-template-columns:1fr;justify-items:center;padding:.7rem .2rem}
html[data-rail="collapsed"] .rail-index{font-size:.76rem;color:rgba(255,251,245,.7)}
html[data-rail="collapsed"] .rail-dot{position:absolute;top:.34rem;right:.45rem}
html[data-rail="collapsed"] .rail-cta .btn{font-size:.72rem;padding:.55rem .4rem;letter-spacing:0}

/* ---------------- 页脚：三带 ---------------- */
.site-foot{position:relative;z-index:1;margin-top:clamp(2.5rem,6vw,5rem)}
.foot-band{padding-block:clamp(2.2rem,4.5vw,3.2rem)}
.foot-band--nav{
  padding-top:calc(var(--cut-h) + 1.6rem);
  background-color:var(--night);
  background-image:linear-gradient(to right,rgba(255,251,245,.06) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(255,251,245,.06) 1px,transparent 1px);
  background-size:56px 56px;
  color:var(--paper);
  clip-path:polygon(0 var(--cut-h),100% 0,100% 100%,0 100%);
}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr) minmax(0,1fr);gap:2rem 2.5rem;align-items:start}
.brand--foot{color:var(--paper)}
.foot-tagline{max-width:26ch;margin:.9rem 0 0;font-size:.9rem;color:rgba(255,251,245,.66)}
.foot-col{display:flex;flex-direction:column}
.foot-col__title{
  margin:0 0 .9rem;font-family:var(--font-num);font-size:.68rem;letter-spacing:.28em;
  text-transform:uppercase;color:var(--lamp);
}
.foot-links{display:flex;flex-direction:column;gap:.5rem}
.foot-link{
  width:fit-content;font-size:.95rem;color:rgba(255,251,245,.8);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.foot-link:hover{color:var(--apricot);border-bottom-color:var(--apricot)}
.foot-field{display:flex;flex-direction:column;gap:.15rem;margin:0 0 .75rem}
.foot-field__label{font-family:var(--font-num);font-size:.68rem;letter-spacing:.2em;color:rgba(255,251,245,.5)}
.foot-field__value{font-size:.95rem;color:rgba(255,251,245,.88);word-break:break-word}

.foot-band--data{background:var(--apricot);color:var(--ink);padding-block:clamp(1.1rem,2.2vw,1.5rem)}
.foot-data{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1.6rem}
.foot-data__text{display:flex;align-items:center;gap:.55rem;margin:0;font-family:var(--font-display);font-weight:700;font-size:.98rem}
.foot-band--data .live-dot{background:var(--night);box-shadow:0 0 0 3px rgba(14,42,37,.16)}
.foot-refresh{display:flex;align-items:center;gap:.5rem;margin:0 0 0 auto;font-size:.85rem;color:rgba(20,26,23,.82)}
.foot-refresh .num{color:var(--ink)}

.foot-band--meta{background:var(--ink);color:rgba(255,251,245,.6);padding-block:1.4rem 1.8rem;font-size:.82rem}
.foot-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.8rem}
.foot-meta__row{margin:0}
.foot-legal{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.2rem;margin:0 0 0 auto}
.foot-legal .foot-meta__row{color:rgba(255,251,245,.5)}
.foot-link--meta{font-size:.82rem;color:var(--mint);border-bottom-color:transparent}
.foot-link--meta:hover{color:var(--lamp);border-bottom-color:var(--lamp)}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .foot-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  :root,html[data-rail="collapsed"]{--rail-w:0px}
  body{padding-left:0}
  body.is-nav-open{overflow:hidden}

  .site-rail{
    position:sticky;top:0;left:auto;bottom:auto;
    width:100%;height:var(--topbar-h);
    flex-direction:row;flex-wrap:nowrap;align-items:center;gap:.6rem;
    padding:.5rem var(--gutter);
    border-right:0;border-bottom:1px solid rgba(53,239,192,.22);
  }
  .site-rail::before{background-size:100% 32px}
  .rail-head{flex:1 1 auto;gap:.5rem}
  .brand-mark{width:36px;height:36px;border-radius:11px;font-size:1.1rem}
  .brand-name{font-size:1rem}
  .brand-sub{display:none}
  .rail-toggle{display:none}
  .nav-toggle{display:inline-flex}
  .rail-status{display:none}
  .rail-cta{flex:0 0 auto}
  .rail-cta .btn{font-size:.78rem;padding:.5rem .85rem;white-space:nowrap}

  .rail-nav{
    position:fixed;left:0;right:0;top:var(--topbar-h);z-index:2;
    max-height:calc(100vh - var(--topbar-h));
    padding:1rem var(--gutter) 1.5rem;
    background:var(--night);
    border-bottom:1px solid rgba(53,239,192,.22);
    overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  }
  .site-rail[data-open="true"] .rail-nav{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .rail-nav__caption{display:block;margin-bottom:.7rem}
  .rail-link{padding:.8rem .85rem;border-radius:18px}
  .rail-label{font-size:1.05rem}
  .rail-link[aria-current="page"]::before{left:-1.15rem}

  .rail-scrim{
    display:block;position:fixed;inset:0;z-index:1;
    background:rgba(10,31,27,.62);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,visibility .2s ease;
  }
  .site-rail[data-open="true"] .rail-scrim{opacity:1;visibility:visible;pointer-events:auto}

  .scroll-meter{left:0;top:var(--topbar-h)}
  :root,html[data-rail="collapsed"]{--cut-h:1.6rem}
  .cut-top{clip-path:polygon(0 1.6rem,100% 0,100% 100%,0 100%)}

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-4{grid-column:span 3}
  .span-8{grid-column:span 6}
}
@media (max-width:640px){
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:1.8rem}
  .foot-refresh{margin-left:0}
  .foot-legal{margin-left:0}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-4,.span-6,.span-8,.span-12{grid-column:span 2}
  .panel{border-radius:22px}
}

/* ---------------- 动效降级 ---------------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html[data-js="on"] [data-reveal]{opacity:1;transform:none}
  .ticker__track{animation:none}
  .btn:hover{transform:none}
  .img-frame:hover img{transform:none}
}