/* ============================================================
   千赢体育VIP · 共享样式 /assets/site.css
   高原夜空深蓝 + 经幡五色 · 左侧轨道框架式导航
   ============================================================ */

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

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B1428;
  --ink-2:#12213F;
  --ink-3:#182C52;
  --paper:#F4F1E9;
  --paper-2:#E9E3D6;
  --white:#F2F4F7;
  --gold:#E9B24A;
  --gold-deep:#C78F2E;
  --blue:#2C6BD8;
  --red:#E23B3B;
  --yellow:#E8C33A;
  --green:#2FA36B;
  --stone:#6E7B94;
  --clay:#A6653F;

  --rail-w:220px;
  --frame-h:44px;
  --topbar-h:64px;
  --gutter:clamp(18px,4vw,64px);

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --flag:linear-gradient(90deg,var(--blue) 0 20%,var(--white) 20% 40%,var(--red) 40% 60%,var(--green) 60% 80%,var(--yellow) 80% 100%);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  padding-left:var(--rail-w);
  padding-top:var(--frame-h);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 16% 10%,rgba(44,107,216,.20),transparent 44%),
    radial-gradient(circle at 86% 6%,rgba(166,101,63,.16),transparent 46%),
    radial-gradient(circle at 64% 96%,rgba(47,163,107,.12),transparent 52%);
  color:var(--white);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  transition:padding-left .34s var(--ease);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:9999;
  pointer-events:none;
  opacity:.35;
  background-image:
    radial-gradient(rgba(242,244,247,.055) 1px,transparent 1px),
    radial-gradient(rgba(242,244,247,.03) 1px,transparent 1px);
  background-size:3px 3px,7px 7px;
  background-position:0 0,2px 3px;
  mix-blend-mode:screen;
}
h1,h2,h3,h4{line-height:1.12;font-weight:900;letter-spacing:-.015em}
strong{font-weight:700}
p{max-width:66ch}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}
::selection{background:var(--gold);color:#14100A}

/* ---------- 4. 通用工具 ---------- */
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;border:0;
  clip:rect(0 0 0 0);clip-path:inset(50%);
  overflow:hidden;white-space:nowrap;
}
.mono{font-family:var(--font-mono);font-size:.82em;letter-spacing:.06em}
.wrap{width:100%;max-width:1240px;margin-inline:auto;padding-inline:var(--gutter)}
.section{padding:clamp(44px,7vw,104px) 0;position:relative}
.split-rule{
  height:2px;border:0;
  margin:clamp(28px,4vw,56px) 0;
  background:linear-gradient(90deg,rgba(242,244,247,.05),rgba(242,244,247,.3),rgba(242,244,247,.05));
  transform:skewY(-1.2deg);
}
.flag-strip{
  display:block;height:3px;width:100%;
  background:var(--flag);
}

/* ---------- 5. 按钮 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;border-radius:2px;
  font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.04em;
  border:1px solid transparent;text-align:center;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn--primary{
  background:linear-gradient(135deg,var(--gold),var(--gold-deep));
  color:#171106;
  box-shadow:4px 4px 0 rgba(11,20,40,.55);
}
.btn--primary:hover{transform:translate(-1px,-2px);box-shadow:6px 7px 0 rgba(11,20,40,.55)}
.btn--line{border-color:rgba(242,244,247,.38);color:var(--white)}
.btn--line:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-1px)}
.btn--quiet{background:rgba(44,107,216,.18);border-color:rgba(44,107,216,.52);color:var(--white)}
.btn--quiet:hover{background:rgba(44,107,216,.3);border-color:var(--blue)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--gold);font-weight:700;
  border-bottom:1px solid rgba(233,178,74,.5);
  padding-bottom:2px;
  transition:gap .2s var(--ease),border-color .2s var(--ease);
}
.text-link:hover{gap:11px;border-color:var(--gold)}

/* ---------- 6. 展签 / 标签 / 主题带 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{
  content:"";width:26px;height:6px;flex:none;
  background:var(--flag);
}
.skew-band{
  display:inline-flex;align-items:center;gap:12px;
  padding:clamp(9px,1.3vw,15px) clamp(16px,2vw,24px);
  background:linear-gradient(90deg,rgba(166,101,63,.42),rgba(44,107,216,.28));
  border-left:6px solid var(--gold);
  transform:skewX(-6deg);
}
.skew-band > *{transform:skewX(6deg)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:2px;
  border:1px solid rgba(242,244,247,.3);
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  color:rgba(242,244,247,.82);white-space:nowrap;
}
.tag--gold{border-color:rgba(233,178,74,.62);color:var(--gold);background:rgba(233,178,74,.12)}
.tag--red{border-color:rgba(226,59,59,.62);color:#FF9090;background:rgba(226,59,59,.16)}
.tag--yellow{border-color:rgba(232,195,58,.62);color:var(--yellow);background:rgba(232,195,58,.14)}
.tag--green{border-color:rgba(47,163,107,.62);color:#6FD3A2;background:rgba(47,163,107,.16)}

/* ---------- 7. 栏目标题 / 面包屑 ---------- */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;
  margin-bottom:clamp(22px,3vw,44px);
  padding-bottom:18px;
  border-bottom:1px solid rgba(242,244,247,.16);
}
.section-head__title{
  font-size:clamp(28px,4vw,56px);
  font-weight:900;line-height:1.06;letter-spacing:-.025em;
  color:var(--white);
}
.section-head__note{max-width:38ch;font-size:15px;line-height:1.7;color:var(--stone)}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:clamp(16px,2.4vw,28px) 0;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;
  color:var(--stone);
}
.breadcrumbs a{color:rgba(242,244,247,.7);transition:color .2s var(--ease)}
.breadcrumbs a:hover{color:var(--gold)}
.breadcrumbs__sep{color:rgba(242,244,247,.28)}
.breadcrumbs [aria-current="page"]{color:var(--white)}

/* ---------- 8. 图片容器（页面阶段放 img） ---------- */
.figure{
  position:relative;
  padding:8px;
  background:var(--ink-2);
  border:1px solid rgba(242,244,247,.14);
  box-shadow:8px 8px 0 rgba(11,20,40,.35);
}
.figure__media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:
    linear-gradient(135deg,rgba(44,107,216,.42),rgba(11,20,40,.92)),
    repeating-linear-gradient(0deg,rgba(242,244,247,.08) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(242,244,247,.08) 0 1px,transparent 1px 24px);
}
.figure__media img{width:100%;height:100%;object-fit:cover}
.figure__media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,20,40,.16),rgba(233,178,74,.16));
}
.figure__caption{
  display:flex;justify-content:space-between;gap:12px;
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.08em;
  color:var(--stone);
}
.figure--wide .figure__media{aspect-ratio:21/9}
.figure--tall .figure__media{aspect-ratio:4/5}

/* ---------- 9. 纸张叠层 / 数字锚点 ---------- */
.paper-card{
  position:relative;
  padding:clamp(20px,2.6vw,32px);
  background:var(--paper);
  color:var(--ink);
  border-top:3px solid var(--clay);
  box-shadow:8px 8px 0 rgba(11,20,40,.42);
}
.paper-card p,.paper-card li,.paper-card dd{color:#243049}
.paper-card .eyebrow{color:var(--clay)}
.data-anchor{
  display:flex;flex-direction:column;gap:4px;
  padding-left:16px;
  border-left:6px solid var(--gold);
}
.data-anchor__num{
  font-family:var(--font-mono);
  font-size:clamp(44px,7vw,80px);
  font-weight:700;line-height:.95;letter-spacing:-.02em;
  color:var(--gold);
}
.data-anchor__label{font-size:13px;letter-spacing:.06em;color:var(--stone)}

/* ---------- 10. 筛选条 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:16px 0;
  margin-bottom:clamp(20px,3vw,36px);
  border-top:1px solid rgba(242,244,247,.14);
  border-bottom:1px solid rgba(242,244,247,.14);
}
.filter-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:2px;
  border:1px solid rgba(242,244,247,.24);
  font-size:13px;font-weight:600;letter-spacing:.02em;
  color:rgba(242,244,247,.78);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.filter-chip::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:rgba(242,244,247,.32);
  transition:background .2s var(--ease);
}
.filter-chip:hover{border-color:var(--gold);color:var(--white)}
.filter-chip[aria-pressed="true"]{background:rgba(44,107,216,.26);border-color:var(--blue);color:var(--white)}
.filter-chip[aria-pressed="true"]::before{background:var(--gold)}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  color:var(--stone);
}

/* ---------- 11. 显现 ---------- */
.js .reveal{
  opacity:0;
  transform:translate3d(14px,18px,0);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.js .reveal.is-revealed{opacity:1;transform:none}

/* ---------- 12. 头部：跳过链接 ---------- */
.skip-link{
  position:fixed;left:10px;top:-80px;z-index:200;
  padding:12px 18px;
  background:var(--paper);color:var(--ink);
  font-weight:700;font-size:15px;border-radius:2px;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:10px}

/* ---------- 13. 头部：框架 ---------- */
.site-header{position:relative;z-index:60}
.frame-bar{
  position:fixed;top:0;left:var(--rail-w);right:0;
  height:var(--frame-h);z-index:55;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 var(--gutter);
  background:rgba(18,33,63,.88);
  border-bottom:1px solid rgba(242,244,247,.12);
  backdrop-filter:blur(8px);
  transition:left .34s var(--ease);
}
.frame-bar::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;
  background:var(--flag);opacity:.85;
}
.frame-bar__note{
  display:flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.06em;
  color:rgba(242,244,247,.82);
  max-width:none;
}
.frame-bar__note::before{content:"";width:3px;height:14px;background:var(--gold);flex:none}
.frame-bar__meta{
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--stone);white-space:nowrap;
}

/* ---------- 14. 头部：移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;
  height:var(--topbar-h);z-index:72;
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;
  background:rgba(11,20,40,.95);
  border-bottom:1px solid rgba(242,244,247,.12);
  backdrop-filter:blur(10px);
}
.topbar__brand{display:flex;align-items:center;gap:10px;min-width:0}
.topbar__brand-text{
  display:flex;flex-direction:column;
  font-size:16px;font-weight:900;line-height:1.15;letter-spacing:.02em;
  white-space:nowrap;
}
.topbar__brand-sub{
  font-family:var(--font-mono);
  font-size:10px;font-weight:400;letter-spacing:.18em;
  color:var(--gold);margin-top:3px;
}
.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;gap:5px;
  padding:8px 11px;border-radius:2px;
  border:1px solid rgba(242,244,247,.3);
  color:var(--white);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold)}
.nav-toggle__bars{display:grid;gap:3px;width:18px}
.nav-toggle__bars span{
  display:block;height:2px;background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle__label{
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.16em;
}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-scrim{display:none;position:fixed;inset:0;z-index:66;background:rgba(8,14,28,.72)}

/* ---------- 15. 头部：左侧品牌轨道 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;z-index:80;
  width:var(--rail-w);
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,var(--ink-2),var(--ink));
  border-right:1px solid rgba(242,244,247,.12);
  overflow:hidden;
  transition:width .34s var(--ease),transform .34s var(--ease),box-shadow .34s var(--ease);
}
.rail__head{
  display:flex;align-items:center;gap:12px;
  flex:none;
  padding:16px;
  border-bottom:1px solid rgba(242,244,247,.12);
}
.rail__brand{display:flex;align-items:center;gap:12px;min-width:0}
.rail__mark{
  display:grid;place-items:center;flex:none;
  width:44px;height:44px;border-radius:2px;
  background:linear-gradient(140deg,var(--gold),var(--gold-deep));
  color:#14100A;font-size:20px;font-weight:900;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(20,16,10,.25);
}
.topbar .rail__mark{width:36px;height:36px;font-size:17px}
.rail__brand-text{
  display:flex;flex-direction:column;
  font-size:16px;font-weight:900;line-height:1.18;letter-spacing:.02em;
  white-space:nowrap;
  transition:opacity .18s var(--ease);
}
.rail__brand-sub{
  font-family:var(--font-mono);
  font-size:10px;font-weight:400;letter-spacing:.2em;
  color:var(--gold);margin-top:4px;
}
.rail__close{
  display:none;
  margin-left:auto;
  width:34px;height:34px;
  place-items:center;
  border:1px solid rgba(242,244,247,.3);border-radius:2px;
  color:var(--white);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.rail__close:hover{border-color:var(--gold);color:var(--gold)}
.rail__close-x{font-size:18px;line-height:1}
.rail__nav{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:10px 0}
.rail__list{display:flex;flex-direction:column;gap:2px}
.rail__item{display:block}
.rail__link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:13px 18px;
  border-left:3px solid transparent;
  color:rgba(242,244,247,.72);
  font-size:15px;font-weight:500;letter-spacing:.01em;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),padding .2s var(--ease);
}
.rail__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--clay));
  transition:width .26s var(--ease);
}
.rail__link:hover,
.rail__link:focus-visible{
  color:var(--white);
  background:rgba(44,107,216,.16);
  border-left-color:var(--gold);
}
.rail__link:hover::after{width:100%}
.rail__link[aria-current="page"]{
  color:var(--white);font-weight:700;
  background:rgba(44,107,216,.24);
  border-left-color:var(--gold);
}
.rail__link[aria-current="page"] .rail__idx{color:var(--gold)}
.rail__link[aria-current="page"]::after{width:100%;opacity:.55}
.rail__idx{
  flex:none;min-width:18px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.08em;
  color:var(--stone);
  transition:color .2s var(--ease);
}
.rail__text{white-space:nowrap;transition:opacity .18s var(--ease)}
.rail__actions{
  flex:none;
  display:grid;gap:10px;
  padding:16px 18px;
  border-top:1px solid rgba(242,244,247,.12);
  transition:opacity .18s var(--ease);
}
.rail__note{
  flex:none;
  padding:0 18px 18px;
  font-size:10px;letter-spacing:.14em;line-height:1.7;
  color:var(--stone);
  max-width:none;
  transition:opacity .18s var(--ease);
}
.rail__progress{
  position:absolute;right:0;top:0;
  width:3px;height:100%;
  transform:scaleY(0);transform-origin:top center;
  background:linear-gradient(180deg,var(--gold),var(--clay));
  opacity:.92;pointer-events:none;
}

/* ---------- 16. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,128px);
  padding:clamp(52px,7vw,96px) 0 0;
  background:linear-gradient(180deg,#0E1B36 0%,#080F1E 62%);
  border-top:1px solid rgba(242,244,247,.12);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--flag);
}
.footer-flag{
  position:absolute;top:0;right:clamp(18px,6vw,80px);
  display:flex;gap:6px;
  pointer-events:none;
}
.footer-flag span{
  display:block;width:8px;
  transform-origin:top center;
  animation:flag-sway 6.5s ease-in-out infinite;
}
.footer-flag span:nth-child(1){height:34px;background:var(--blue);animation-delay:0s}
.footer-flag span:nth-child(2){height:52px;background:var(--white);animation-delay:.5s}
.footer-flag span:nth-child(3){height:42px;background:var(--red);animation-delay:1s}
.footer-flag span:nth-child(4){height:58px;background:var(--green);animation-delay:1.5s}
.footer-flag span:nth-child(5){height:30px;background:var(--yellow);animation-delay:2s}
@keyframes flag-sway{
  0%,100%{transform:rotate(-2.5deg)}
  50%{transform:rotate(2.5deg)}
}
.footer-inner{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.35fr) minmax(0,1fr);
  gap:clamp(26px,4vw,56px);
  max-width:1320px;
  margin:0 auto;
  padding:0 var(--gutter) clamp(34px,5vw,64px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-brand__mark{
  font-size:clamp(26px,3vw,38px);
  font-weight:900;line-height:1.1;letter-spacing:-.01em;
  color:var(--white);
  max-width:none;
}
.footer-brand__mark span{
  margin-left:8px;
  font-family:var(--font-mono);
  font-size:.42em;font-weight:500;letter-spacing:.18em;
  color:var(--gold);vertical-align:super;
}
.footer-brand__closing{
  margin-top:10px;
  font-size:16px;font-weight:700;
  color:var(--gold);
  max-width:none;
}
.footer-brand__meta{
  margin-top:6px;
  font-size:11px;letter-spacing:.16em;
  color:var(--stone);
}
.footer-brand__cta{margin-top:22px}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col{min-width:0}
.footer-col__title{
  position:relative;
  padding-left:12px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;font-weight:500;letter-spacing:.18em;
  color:var(--stone);
  line-height:1.4;
}
.footer-col__title::before{
  content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;
  background:var(--clay);
}
.footer-col__list{display:grid;gap:10px}
.footer-col__list a{
  display:inline-block;
  font-size:15px;color:rgba(242,244,247,.8);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col__list a:hover{color:var(--gold);transform:translateX(3px)}
.footer-card{
  position:relative;
  align-self:start;
  padding:22px 20px 20px;
  background:var(--paper);
  color:var(--ink);
  box-shadow:8px 8px 0 rgba(233,178,74,.16);
}
.footer-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--flag);
}
.footer-card__title{
  margin-bottom:14px;
  font-size:15px;font-weight:900;letter-spacing:.02em;
  color:var(--ink);
  line-height:1.4;
}
.footer-card__list{display:grid;gap:12px}
.footer-card__row dt{
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.14em;
  color:var(--clay);
  margin-bottom:2px;
}
.footer-card__row dd{
  font-size:13.5px;line-height:1.6;
  color:#243049;
  overflow-wrap:anywhere;
}
.footer-base{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:8px 24px;
  max-width:1320px;
  margin:0 auto;
  padding:18px var(--gutter) 26px;
  border-top:1px solid rgba(242,244,247,.12);
  font-size:11px;letter-spacing:.1em;
  color:var(--stone);
}
.footer-base p{max-width:none}

/* ---------- 17. 桌面轨道收窄（≥1024px） ---------- */
@media (min-width:1024px){
  :root[data-rail="compact"]{--rail-w:76px}
  :root[data-rail="compact"] .rail__link{padding-left:26px;gap:0}
  :root[data-rail="compact"] .rail__text,
  :root[data-rail="compact"] .rail__brand-text,
  :root[data-rail="compact"] .rail__actions,
  :root[data-rail="compact"] .rail__note{
    opacity:0;visibility:hidden;pointer-events:none;
  }
  :root[data-rail="compact"] .rail:hover,
  :root[data-rail="compact"] .rail:focus-within{
    width:220px;
    box-shadow:26px 0 60px rgba(0,0,0,.5);
  }
  :root[data-rail="compact"] .rail:hover .rail__text,
  :root[data-rail="compact"] .rail:focus-within .rail__text,
  :root[data-rail="compact"] .rail:hover .rail__brand-text,
  :root[data-rail="compact"] .rail:focus-within .rail__brand-text,
  :root[data-rail="compact"] .rail:hover .rail__actions,
  :root[data-rail="compact"] .rail:focus-within .rail__actions,
  :root[data-rail="compact"] .rail:hover .rail__note,
  :root[data-rail="compact"] .rail:focus-within .rail__note{
    opacity:1;visibility:visible;pointer-events:auto;
  }
  :root[data-rail="compact"] .rail:hover .rail__link,
  :root[data-rail="compact"] .rail:focus-within .rail__link{
    padding-left:18px;gap:12px;
  }
}

/* ---------- 18. 平板 / 移动：抽屉式导航 ---------- */
@media (max-width:1023px){
  :root{--rail-w:0px}
  body{padding-left:0;padding-top:var(--topbar-h)}
  .frame-bar{display:none}
  .topbar{display:flex}
  .rail{
    top:0;bottom:0;
    width:min(86vw,340px);
    transform:translateX(-100%);
    box-shadow:none;
  }
  .site-header[data-open] .rail{
    transform:translateX(0);
    box-shadow:20px 0 50px rgba(0,0,0,.55);
  }
  .site-header[data-open] .nav-scrim{display:block}
  body.is-nav-open{overflow:hidden}
  .rail__close{display:grid}
  .rail__link{padding:15px 20px;font-size:16px}
  .rail__actions{grid-template-columns:1fr}
  .rail__note{display:block}
  .footer-inner{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}
  .footer-card{grid-column:1 / -1}
}

/* ---------- 19. 窄屏细化 ---------- */
@media (max-width:1100px){
  .frame-bar__meta{display:none}
}
@media (max-width:760px){
  .footer-inner{grid-template-columns:1fr}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .footer-base{flex-direction:column;align-items:flex-start}
  .footer-flag span:nth-child(2),
  .footer-flag span:nth-child(5){display:none}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.72}
  .section{padding:clamp(36px,9vw,56px) 0}
  .figure__caption{flex-direction:column;gap:2px}
  .filter-count{margin-left:0;width:100%}
  .footer-nav{grid-template-columns:1fr}
}

/* ---------- 20. 降低动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .js .reveal{transform:none}
  .rail{transition:none}
  body{transition:none}
}