/* ============================================================
   三亿体育入口 · 共享样式 /assets/site.css
   夜场数据工作台：深场墨蓝底色 + 电光青数据锚点 + 荧光橙权益强调
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B1220;
  --ink-2:#111827;
  --panel:#1F2937;
  --paper:#F8FAFC;
  --mist:#CBD5E1;
  --cyan:#22D3EE;
  --blue:#38BDF8;
  --orange:#FB923C;
  --amber:#F59E0B;
  --green:#34D399;

  --rail-w:264px;
  --topbar-h:64px;
  --wrap:1180px;

  --radius-xl:32px;
  --radius-l:24px;
  --radius-m:16px;
  --radius-pill:999px;

  --line:rgba(203,213,225,.14);
  --line-cyan:rgba(34,211,238,.28);
  --shadow-card:0 22px 46px rgba(3,8,18,.5);

  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono","Cascadia Mono",Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse}

/* ---------- 3. 基础排版 ---------- */
html{scroll-padding-top:calc(var(--topbar-h) + 16px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

body{
  min-height:100%;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  color:var(--paper);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 82% -6%,rgba(34,211,238,.10),transparent 62%),
    radial-gradient(900px 520px at 4% 106%,rgba(251,146,60,.08),transparent 62%);
  background-repeat:no-repeat;
  padding-top:var(--topbar-h);
  overflow-x:hidden;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  letter-spacing:-.012em;
  line-height:1.08;
  color:var(--paper);
}
h1{font-size:clamp(2.8rem,6vw,5.5rem)}
h2{font-size:clamp(1.8rem,2.6vw,3rem);line-height:1.14}
h3{font-size:clamp(1.15rem,1.7vw,1.5rem);line-height:1.28;font-weight:800}
h4{font-size:1.05rem;line-height:1.35;font-weight:700}
p{color:var(--mist)}
strong,b{color:var(--paper);font-weight:700}
small{font-size:.82rem}
a{text-decoration:none}
a:hover{color:var(--cyan)}
main{display:block;min-width:0}
#main-content{scroll-margin-top:calc(var(--topbar-h) + 12px)}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 4. 布局工具 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section--tight{padding:44px 0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:12px 26px;margin-bottom:28px;padding-bottom:18px;border-bottom:1px solid var(--line);
}
.section-head__meta{
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--blue);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);flex:0 0 auto}
.grid{display:grid;gap:20px}
@media (min-width:640px){.grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1000px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
}
.stack{display:grid;gap:16px}

/* ---------- 5. 跳过链接 ---------- */
.skip-link{
  position:fixed;top:12px;left:12px;z-index:200;
  transform:translateY(-180%);
  padding:11px 18px;border-radius:var(--radius-pill);
  background:var(--cyan);color:#04212b;font-weight:700;font-size:.88rem;
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 6. 品牌锁 ---------- */
.brand{display:inline-flex;align-items:center;gap:11px;min-width:0;color:var(--paper)}
.brand:hover{color:var(--paper)}
.brand__mark{
  position:relative;flex:0 0 auto;width:36px;height:36px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(34,211,238,.3),rgba(56,189,248,.05));
  border:1px solid rgba(34,211,238,.55);
  box-shadow:inset 0 0 0 1px rgba(11,18,32,.6),0 10px 24px rgba(34,211,238,.16);
}
.brand__pip{
  width:8px;height:8px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(34,211,238,.18);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand__name{font-family:var(--font-display);font-weight:800;font-size:1.02rem;letter-spacing:.02em;white-space:nowrap}
.brand__tag{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.22em;text-transform:uppercase;color:var(--mist);white-space:nowrap}
.brand--rail{width:100%}

@keyframes pip-pulse{
  0%,100%{transform:scale(1);opacity:1}
  50%{transform:scale(.7);opacity:.65}
}
@media (prefers-reduced-motion:no-preference){
  .brand__pip,.rail__dot{animation:pip-pulse 2.6s var(--ease) infinite}
}

/* ---------- 7. 顶部状态条（移动） ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:var(--topbar-h);padding:0 16px;
  background:rgba(11,18,32,.88);
  border-bottom:1px solid rgba(34,211,238,.16);
  backdrop-filter:blur(14px);
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 15px;border-radius:var(--radius-pill);
  background:rgba(31,41,55,.7);border:1px solid var(--line-cyan);
  color:var(--paper);font-size:.84rem;font-weight:600;cursor:pointer;
  transition:border-color .2s,color .2s,background-color .2s;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px}
.nav-toggle__bars span{
  position:absolute;left:0;width:100%;height:2px;border-radius:2px;background:currentColor;
  transition:transform .26s var(--ease),opacity .2s linear;
}
.nav-toggle__bars span:nth-child(1){top:0}
.nav-toggle__bars span:nth-child(2){top:5px}
.nav-toggle__bars span:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media (max-width:379px){.brand__tag{display:none}}

/* ---------- 8. 遮罩与侧边轨道 ---------- */
.scrim{
  position:fixed;inset:0;z-index:75;
  background:rgba(4,8,16,.68);
  opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.site-header[data-open] .scrim{opacity:1;pointer-events:auto}

.rail{
  position:fixed;top:0;left:0;bottom:0;z-index:80;
  width:min(324px,86vw);
  display:flex;flex-direction:column;gap:18px;
  padding:22px 18px 20px;
  overflow-y:auto;overscroll-behavior:contain;
  background:linear-gradient(180deg,#0B1220 0%,#0A101C 58%,#0B1220 100%);
  border-right:1px solid rgba(34,211,238,.14);
  transform:translateX(-104%);
  transition:transform .42s var(--ease);
}
.rail::after{
  content:"";position:absolute;top:0;right:0;width:1px;height:100%;
  background:linear-gradient(180deg,transparent,rgba(34,211,238,.55) 16%,rgba(34,211,238,.1) 62%,transparent);
  pointer-events:none;
}
.site-header[data-open] .rail{transform:translateX(0)}
.rail::-webkit-scrollbar{width:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(34,211,238,.26);border-radius:99px}

.rail__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px dashed var(--line)}
.rail__close{
  flex:0 0 auto;width:36px;height:36px;display:grid;place-items:center;
  border-radius:50%;background:rgba(31,41,55,.85);border:1px solid var(--line);
  color:var(--paper);cursor:pointer;transition:border-color .2s,color .2s;
}
.rail__close:hover{border-color:var(--cyan);color:var(--cyan)}
.rail__eyebrow{
  margin:0 0 2px 8px;font-family:var(--font-mono);font-size:.68rem;
  letter-spacing:.26em;text-transform:uppercase;color:var(--blue);
}
.rail__list{display:flex;flex-direction:column;gap:4px}
.rail__link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 15px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  color:var(--mist);font-size:.95rem;font-weight:500;
  transition:color .2s,background-color .2s,border-color .2s,transform .2s var(--ease);
}
.rail__link:hover{
  color:var(--paper);background:rgba(31,41,55,.72);
  border-color:rgba(56,189,248,.3);transform:translateX(3px);
}
.rail__link[aria-current="page"]{
  color:#04212b;font-weight:700;
  background:linear-gradient(120deg,var(--cyan),var(--blue));
  border-color:transparent;
  box-shadow:0 12px 28px rgba(34,211,238,.22);
}
.rail__idx{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;min-width:1.6em;opacity:.85}
.rail__txt{min-width:0}

.rail__foot{
  margin-top:auto;display:grid;gap:10px;
  padding-top:18px;border-top:1px dashed var(--line);
}
.rail__status{
  display:flex;align-items:center;gap:8px;padding-left:4px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.04em;color:var(--mist);
}
.rail__dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(52,211,153,.18);flex:0 0 auto}

/* ---------- 9. 滚动进度 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:95;
  background:rgba(203,213,225,.1);pointer-events:none;
}
.scroll-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--blue) 55%,var(--orange));
  transition:transform .08s linear;
}

/* ---------- 10. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 21px;border-radius:var(--radius-pill);
  border:1px solid transparent;cursor:pointer;
  font-size:.94rem;font-weight:700;line-height:1.2;
  transition:transform .22s var(--ease),box-shadow .22s,background-color .22s,color .22s,border-color .22s;
}
.btn--cyan{
  background:linear-gradient(120deg,var(--cyan),var(--blue));color:#04212b;
  box-shadow:0 12px 30px rgba(34,211,238,.22);
}
.btn--cyan:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(34,211,238,.3);color:#04212b}
.btn--orange{
  background:linear-gradient(120deg,var(--orange),var(--amber));color:#2a1403;
  box-shadow:0 12px 30px rgba(251,146,60,.22);
}
.btn--orange:hover{transform:translateY(-2px);color:#2a1403}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(203,213,225,.32)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--block{width:100%}
.btn__mono{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;
  padding:2px 8px;border-radius:var(--radius-pill);background:rgba(4,33,43,.22);
}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:var(--radius-pill);
  background:rgba(31,41,55,.75);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.04em;color:var(--mist);
}
.chip--cyan{background:linear-gradient(120deg,var(--cyan),var(--blue));border-color:transparent;color:#04212b;font-weight:700}
.chip--orange{background:linear-gradient(120deg,var(--orange),var(--amber));border-color:transparent;color:#2a1403;font-weight:700}
.chip--ghost{background:transparent}

/* ---------- 11. 卡片与数据 ---------- */
.card{
  position:relative;
  padding:26px;border-radius:var(--radius-l);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(31,41,55,.9),rgba(17,24,39,.72));
  transition:transform .26s var(--ease),border-color .26s,box-shadow .26s;
}
.card--warm{border-color:rgba(251,146,60,.28);background:linear-gradient(160deg,rgba(251,146,60,.13),rgba(17,24,39,.86))}
.card--cold{border-color:var(--line-cyan);background:linear-gradient(160deg,rgba(34,211,238,.1),rgba(17,24,39,.86))}
a.card{display:block;color:inherit}
a.card:hover,.card--lift:hover{transform:translateY(-4px);border-color:var(--line-cyan);box-shadow:var(--shadow-card)}
.card__title{font-family:var(--font-display);font-weight:800;font-size:1.15rem;line-height:1.3;margin-bottom:8px}
.card__text{font-size:.94rem;color:var(--mist)}
.card__meta{margin-top:14px;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}

.kpi{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:700;letter-spacing:-.02em;color:var(--paper);
}
.kpi--cyan{color:var(--cyan)}
.kpi--orange{color:var(--orange)}

/* ---------- 12. 表格 ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m);
  background:rgba(31,41,55,.35);
}
table.table{width:100%;min-width:560px;font-size:.92rem}
table.table th,table.table td{padding:13px 16px;text-align:left;border-bottom:1px solid rgba(203,213,225,.1)}
table.table thead th{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--blue);background:rgba(11,18,32,.62);
}
table.table tbody tr:hover{background:rgba(34,211,238,.06)}
table.table tbody tr:last-child td{border-bottom:0}

/* ---------- 13. 标签页（榜单切换） ---------- */
.tabs{display:grid;gap:22px}
.tabs__list{
  display:flex;gap:6px;width:fit-content;max-width:100%;
  padding:5px;border-radius:var(--radius-pill);
  background:rgba(31,41,55,.6);border:1px solid var(--line);
  overflow-x:auto;scrollbar-width:none;
}
.tabs__list::-webkit-scrollbar{display:none}
.tabs__btn{
  white-space:nowrap;padding:9px 20px;border-radius:var(--radius-pill);
  border:0;background:transparent;color:var(--mist);
  font-size:.9rem;font-weight:600;cursor:pointer;
  transition:background-color .22s,color .22s,transform .22s var(--ease);
}
.tabs__btn:hover{color:var(--paper)}
.tabs__btn[aria-selected="true"]{
  background:linear-gradient(120deg,var(--cyan),var(--blue));
  color:#04212b;font-weight:700;
  box-shadow:0 10px 24px rgba(34,211,238,.2);
}
.tabs__panel[hidden]{display:none}
@media (prefers-reduced-motion:no-preference){
  .tabs__panel{animation:tabs-in .32s var(--ease) both}
  @keyframes tabs-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
}

/* ---------- 14. 折叠面板 ---------- */
.accordion{
  border:1px solid var(--line);border-radius:var(--radius-m);
  background:rgba(31,41,55,.42);
  grid — : none;
}
.accordion + .accordion{margin-top:10px}
.accordion__head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  width:100%;padding:16px 18px;border:0;background:transparent;
  color:var(--paper);font-size:1rem;font-weight:600;text-align:left;cursor:pointer;
  transition:color .2s;
}
.accordion__head:hover{color:var(--cyan)}
.accordion__icon{flex:0 0 auto;font-family:var(--font-mono);color:var(--cyan);transition:transform .26s var(--ease)}
.accordion__head[aria-expanded="true"] .accordion__icon{transform:rotate(45deg)}
.accordion__panel{padding:0 18px 18px;color:var(--mist);font-size:.94rem;border-top:1px dashed var(--line);margin-top:-1px;padding-top:16px}
.accordion__panel[hidden]{display:none}

/* ---------- 15. 图片容器与纹理 ---------- */
.media{
  position:relative;overflow:hidden;border-radius:var(--radius-l);
  aspect-ratio:16/9;border:1px solid var(--line);
  background:linear-gradient(140deg,#1F2937,#0B1220 65%);
}
.media img{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,18,32,0),rgba(11,18,32,.72));
}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--wide{aspect-ratio:21/9}
.media__caption{
  position:absolute;left:16px;bottom:14px;z-index:2;
  font-family:var(--font-mono);font-size:.76rem;color:var(--mist);
}
.data-grid{
  background-image:
    linear-gradient(rgba(34,211,238,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(34,211,238,.08) 1px,transparent 1px);
  background-size:32px 32px;
}

/* ---------- 16. 面包屑 ---------- */
.breadcrumbs{padding:16px 0}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:6px 10px;font-family:var(--font-mono);font-size:.78rem;color:var(--mist)}
.breadcrumbs li{display:inline-flex;align-items:center;gap:10px}
.breadcrumbs li + li::before{content:"/";color:rgba(203,213,225,.38)}
.breadcrumbs a{color:var(--mist)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--paper)}

/* ---------- 17. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:96px;overflow:hidden;
  background:linear-gradient(180deg,#0B1220 0%,#111827 44%,#0d1523 100%);
  border-top:1px solid rgba(34,211,238,.2);
}
.footer__glow{
  position:absolute;right:-12%;bottom:-58%;width:min(620px,80vw);height:420px;
  background:radial-gradient(closest-side,rgba(251,146,60,.18),transparent 72%);
  pointer-events:none;
}
.footer__inner{
  position:relative;z-index:1;
  display:grid;gap:36px;
  padding-top:58px;padding-bottom:40px;
}
.footer__brand{font-family:var(--font-display);font-weight:900;font-size:1.5rem;letter-spacing:.01em;color:var(--paper)}
.footer__brandline{
  margin-top:8px;font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.1em;color:var(--cyan);
}
.footer__desc{margin-top:14px;max-width:38ch;font-size:.94rem;color:var(--mist)}
.footer__contact{margin-top:22px;display:grid;gap:10px}
.footer__contact li{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}
.footer__label{
  flex:0 0 auto;min-width:5.6em;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;color:var(--blue);
}
.footer__value{font-size:.9rem;color:var(--paper);word-break:break-word}
.footer__value--mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

.footer__nav{display:grid;gap:26px;grid-template-columns:repeat(2,minmax(0,1fr))}
.footer__coltitle{
  margin-bottom:12px;font-family:var(--font-mono);font-size:.7rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--cyan);
}
.footer__links{display:grid;gap:9px}
.footer__links a{
  display:inline-block;font-size:.94rem;color:var(--mist);
  transition:color .2s,transform .2s var(--ease);
}
.footer__links a:hover{color:var(--cyan);transform:translateX(4px)}

.site-footer__bar{position:relative;z-index:1;border-top:1px solid var(--line)}
.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  padding-top:20px;padding-bottom:32px;
  font-size:.82rem;color:var(--mist);
}
.footer__icp{font-family:var(--font-mono);letter-spacing:.04em}
.footer__note{opacity:.82}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:18px}
.footer__legal-links a{color:var(--mist);border-bottom:1px solid rgba(203,213,225,.3);padding-bottom:2px;transition:color .2s,border-color .2s}
.footer__legal-links a:hover{color:var(--orange);border-color:var(--orange)}

.to-top{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line-cyan);background:rgba(31,41,55,.6);
  color:var(--paper);font-size:.82rem;
  transition:opacity .3s var(--ease),transform .3s var(--ease),border-color .2s,color .2s,visibility .3s;
}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}
.to-top__arrow{font-family:var(--font-mono)}
html.js-ready .to-top{opacity:0;visibility:hidden;transform:translateY(8px)}
html.js-ready .to-top[data-visible]{opacity:1;visibility:visible;transform:none}

/* ---------- 18. 滚动渐显 ---------- */
@media (prefers-reduced-motion:no-preference){
  html.js-ready [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  html.js-ready [data-reveal][data-visible]{opacity:1;transform:none}
}

/* ---------- 19. 平板与桌面：侧边轨道 ---------- */
@media (min-width:560px){
  .footer__nav{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:900px){
  .footer__inner{grid-template-columns:minmax(0,1.1fr) minmax(0,1.5fr);gap:48px}
}
@media (min-width:1040px){
  body{padding-top:0;padding-left:var(--rail-w)}
  .topbar{display:none}
  .site-header{position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:60}
  .rail{
    position:static;width:100%;height:100%;
    transform:none;padding:28px 18px 24px;
    border-right:1px solid rgba(34,211,238,.14);
  }
  .rail__close{display:none}
  .scrim{display:none}
  .scroll-progress{left:var(--rail-w)}
  .section{padding:92px 0}
}
@media (max-width:1039px){
  html[data-nav-open]{overflow:hidden}
  .rail__eyebrow{margin-top:4px}
}

/* ---------- 20. 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;
  }
}