/* =========================================================
   安博赛事 · 共享样式 /assets/site.css
   夜场转播席 × 数据指挥中心
   ========================================================= */

/* ---------- 01 设计变量 ---------- */
:root{
  --ink-900:#081C17;
  --ink-800:#12382E;
  --ink-750:#0C2A23;
  --ink-600:#1B4C3E;

  --cyan:#3DF5C8;
  --cyan-soft:#B8FFF0;
  --orange:#FF8A3D;
  --red:#E04444;
  --blue:#5CC8FF;

  --paper:#E9F2EE;
  --graphite:#0A0D0C;
  --mist:#9BB0A8;

  --line:rgba(61,245,200,.18);
  --line-soft:rgba(233,242,238,.12);

  --rail-w:272px;
  --topbar-h:64px;
  --content-max:1180px;
  --gut:clamp(18px,4.2vw,56px);

  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;

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

  --shadow-soft:0 18px 44px rgba(0,0,0,.42);
  --dur:.26s;
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 02 Reset 与页面底 ---------- */
*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  color:var(--paper);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(58vw 44vw at 88% -6%, rgba(61,245,200,.10), transparent 62%),
    radial-gradient(46vw 40vw at 4% 104%, rgba(92,200,255,.09), transparent 66%),
    radial-gradient(40vw 34vw at 64% 58%, rgba(255,138,61,.05), transparent 70%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img,svg,picture,video{max-width:100%;display:block}

button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}

ul,ol{margin:0;padding:0;list-style:none}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}

table{border-collapse:collapse;width:100%}

/* ---------- 03 中文排版 ---------- */
h1,h2,h3,h4,h5{
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.2;
}
h1{font-size:clamp(34px,5.1vw,64px);line-height:1.14;margin:0 0 .5em}
h2{font-size:clamp(26px,3.3vw,40px);margin:0 0 .6em}
h3{font-size:clamp(20px,2.1vw,25px);letter-spacing:-.01em;margin:0 0 .5em}
h4{font-size:18px;letter-spacing:0;margin:0 0 .4em}

p{margin:0 0 1.05em;max-width:74ch}
p:last-child{margin-bottom:0}

a{color:var(--cyan);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--cyan-soft)}

strong{font-weight:900}

::selection{background:var(--cyan);color:var(--graphite)}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 04 工具类 ---------- */
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.muted{color:var(--mist)}
.accent{color:var(--cyan)}
.lead{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.72;
  color:rgba(233,242,238,.88);
}

.container{
  width:100%;
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:var(--gut);
}

.section{
  position:relative;
  padding-block:clamp(48px,7vw,104px);
}

.stack{display:grid;gap:var(--stack-gap,16px)}

.divider{
  border:0;
  height:1px;
  margin:clamp(24px,3vw,40px) 0;
  background:linear-gradient(90deg,var(--line) 0%,rgba(61,245,200,0) 78%);
}

/* ---------- 05 眉标 / 标签 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--cyan);
  flex:0 0 auto;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(61,245,200,.08);
  color:var(--cyan);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.5;
}
.tag--signal{
  border-color:rgba(255,138,61,.42);
  background:rgba(255,138,61,.12);
  color:var(--orange);
}
.tag--alert{
  border-color:rgba(224,68,68,.42);
  background:rgba(224,68,68,.12);
  color:var(--red);
}
.tag--data{
  border-color:rgba(92,200,255,.42);
  background:rgba(92,200,255,.12);
  color:var(--blue);
}

/* ---------- 06 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15.5px;
  font-weight:800;
  letter-spacing:.01em;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease),
             background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.btn--primary{background:var(--cyan);color:var(--graphite)}
.btn--primary:hover{color:var(--graphite);box-shadow:0 12px 30px rgba(61,245,200,.26);transform:translateY(-2px)}
.btn--signal{background:var(--orange);color:var(--graphite)}
.btn--signal:hover{color:var(--graphite);box-shadow:0 12px 30px rgba(255,138,61,.26);transform:translateY(-2px)}
.btn--ghost{
  border-color:var(--line);
  background:rgba(233,242,238,.04);
  color:var(--paper);
}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- 07 画板 / 卡片 / 资料行 ---------- */
.panel{
  position:relative;
  background:linear-gradient(160deg,rgba(18,56,46,.94) 0%,rgba(8,28,23,.94) 100%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(22px,3.4vw,44px);
}
.panel--slanted{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),calc(100% - 34px) 100%,0 100%);
}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  background:linear-gradient(165deg,rgba(18,56,46,.86) 0%,rgba(10,33,27,.92) 100%);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:clamp(18px,2.4vw,26px);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.card:hover{border-color:rgba(61,245,200,.42);transform:translateY(-2px)}
.card__meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
.card__title{
  font-size:clamp(17px,1.7vw,20px);
  font-weight:900;
  line-height:1.35;
  color:var(--paper);
  margin:0;
}
.card p{font-size:15px;color:rgba(233,242,238,.78);margin:0}

.doc-row{
  display:grid;
  gap:6px;
  padding:16px 0;
  border-bottom:1px dashed var(--line-soft);
}
.doc-row:last-child{border-bottom:0}

/* ---------- 08 网格 / 主题带 / 数字 ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(238px,1fr))}

.stripe{
  --stripe-accent:var(--cyan);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  padding:16px 20px;
  border:1px solid var(--line);
  border-left:4px solid var(--stripe-accent);
  border-radius:var(--r-md);
  background:rgba(18,56,46,.55);
}
.stripe--signal{--stripe-accent:var(--orange)}
.stripe--data{--stripe-accent:var(--blue)}
.stripe p{margin:0;font-size:15px;color:rgba(233,242,238,.84)}

.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{
  font-family:var(--font-mono);
  font-weight:800;
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.08;
  color:var(--cyan);
  letter-spacing:-.02em;
}
.stat__label{
  font-size:13px;
  letter-spacing:.04em;
  color:var(--mist);
}

/* ---------- 09 时间轴 / 筛选 / 折叠 / 面包屑 ---------- */
.timeline{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding:4px 2px 14px;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.timeline::-webkit-scrollbar{height:6px}
.timeline::-webkit-scrollbar-track{background:rgba(233,242,238,.06);border-radius:99px}
.timeline::-webkit-scrollbar-thumb{background:rgba(61,245,200,.34);border-radius:99px}
.timeline__item{
  flex:0 0 min(282px,78vw);
  scroll-snap-align:start;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(18,56,46,.55);
}

.filter-bar{display:flex;flex-wrap:wrap;gap:10px}
.filter-chip{
  padding:8px 15px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  color:rgba(233,242,238,.76);
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.filter-chip:hover{color:var(--cyan);border-color:rgba(61,245,200,.45)}
.filter-chip[aria-pressed="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--graphite);
}

.accordion{display:grid;gap:10px}
.accordion__item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(18,56,46,.5);
  overflow:hidden;
}
.accordion__trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:16px 18px;
  text-align:left;
  font-size:16px;
  font-weight:700;
  color:var(--paper);
  cursor:pointer;
}
.accordion__trigger::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:20px;
  line-height:1;
  color:var(--cyan);
}
.accordion__trigger[aria-expanded="true"]::after{content:"–"}
.accordion__panel{
  padding:0 18px 18px;
  font-size:15px;
  color:rgba(233,242,238,.82);
}
.accordion__panel[hidden]{display:none}

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--mist);
  margin-bottom:18px;
}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li::after{content:"/";color:rgba(155,176,168,.45)}
.breadcrumbs li:last-child::after{content:""}
.breadcrumbs a{color:var(--mist)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--paper)}

/* ---------- 10 图片容器（页面阶段放图） ---------- */
.media-frame{
  --media-ratio:16 / 9;
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:var(--media-ratio);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:
    linear-gradient(148deg,rgba(61,245,200,.14) 0%,rgba(92,200,255,.07) 46%,rgba(255,138,61,.11) 100%),
    var(--ink-750);
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  right:0;
  bottom:0;
  width:58px;
  height:58px;
  background:linear-gradient(135deg,rgba(61,245,200,0) 50%,rgba(61,245,200,.55) 50%);
  opacity:.7;
  pointer-events:none;
}
.media-frame--wide{--media-ratio:21 / 9}
.media-frame--tall{--media-ratio:3 / 4}
.media-frame--square{--media-ratio:1 / 1}
.media-frame__label{
  position:absolute;
  left:14px;
  bottom:14px;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(8,28,23,.78);
  backdrop-filter:blur(6px);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--cyan);
}

/* ---------- 11 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-140px;
  left:50%;
  transform:translateX(-50%);
  z-index:200;
  padding:12px 24px;
  border-radius:0 0 14px 14px;
  background:var(--cyan);
  color:var(--graphite);
  font-weight:800;
  font-size:15px;
  transition:top .2s var(--ease);
}
.skip-link:focus{
  top:0;
  color:var(--graphite);
}

/* ---------- 12 头部：桌面侧边轨道 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:16px;
  padding:26px 20px 22px;
  background:linear-gradient(178deg,#0F2F26 0%,var(--ink-800) 46%,var(--ink-900) 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;
  overflow-x:hidden;
  z-index:60;
}
.site-header::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:3px;
  height:100%;
  background:linear-gradient(180deg,var(--cyan) 0%,rgba(61,245,200,.08) 58%,var(--orange) 100%);
}

.rail-brand{display:flex;flex-direction:column;gap:12px}

.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:44px;
  height:44px;
  border-radius:13px;
  background:var(--cyan);
  color:var(--graphite);
  font-family:var(--font-mono);
  font-weight:800;
  font-size:15px;
  letter-spacing:-.05em;
  box-shadow:0 0 0 5px rgba(61,245,200,.10);
}
.brand-copy{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand-name{
  font-size:19px;
  font-weight:900;
  line-height:1.2;
  letter-spacing:.02em;
  color:var(--paper);
}
.brand-tag{font-size:11.5px;line-height:1.4;color:var(--mist)}

.rail-meta{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border:1px solid var(--line-soft);
  border-radius:999px;
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
}
.rail-dot{
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 4px rgba(255,138,61,.16);
  animation:railPulse 2.6s ease-in-out infinite;
}
@keyframes railPulse{
  0%,100%{opacity:1}
  50%{opacity:.42}
}

.nav-toggle{display:none}

.site-nav{
  display:flex;
  flex-direction:column;
  gap:22px;
  flex:1 1 auto;
  margin-top:4px;
}
.nav-list{display:flex;flex-direction:column;gap:3px}
.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 12px 11px 14px;
  border-radius:var(--r-sm);
  font-size:15.5px;
  font-weight:700;
  letter-spacing:.01em;
  color:rgba(233,242,238,.76);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  border-radius:3px;
  background:var(--cyan);
  transform:translateY(-50%);
  transition:height var(--dur) var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{
  background:rgba(61,245,200,.07);
  color:var(--paper);
}
.nav-link[aria-current="page"]{
  background:rgba(61,245,200,.13);
  color:var(--cyan);
}
.nav-link[aria-current="page"]::before{height:62%}
.nav-index{
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--mist);
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan)}
.nav-label{line-height:1.25}

.rail-foot{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px dashed var(--line-soft);
}
.rail-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  padding:12px 18px;
  border-radius:12px;
  background:var(--cyan);
  color:var(--graphite);
  font-size:15px;
  font-weight:800;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rail-cta:hover{
  color:var(--graphite);
  transform:translateY(-1px);
  box-shadow:0 12px 26px rgba(61,245,200,.28);
}
.rail-note{font-size:11px;letter-spacing:.05em;color:var(--mist);margin:0}

.nav-scrim{display:none}

.rail-progress{
  position:fixed;
  top:0;
  left:calc(var(--rail-w) - 3px);
  width:3px;
  height:100%;
  background:rgba(233,242,238,.05);
  z-index:80;
  pointer-events:none;
}
.rail-progress span{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(180deg,var(--cyan) 0%,var(--blue) 100%);
  transform:scaleY(var(--progress,0));
  transform-origin:top center;
  transition:transform .12s linear;
}

/* ---------- 13 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  padding:clamp(40px,5.4vw,76px) var(--gut) 26px;
  background:linear-gradient(180deg,rgba(18,56,46,.58) 0%,rgba(8,28,23,.92) 56%,#061310 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:min(520px,68%);
  height:4px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--blue) 42%,var(--orange) 74%,var(--red) 100%);
  clip-path:polygon(0 0,100% 0,calc(100% - 28px) 100%,0 100%);
}

.footer-grid{
  max-width:var(--content-max);
  margin-inline:auto;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,3.6vw,48px);
}

.footer-brand{
  font-size:22px;
  font-weight:900;
  letter-spacing:.02em;
  color:var(--paper);
  margin:0 0 10px;
}
.footer-desc{
  font-size:14px;
  line-height:1.7;
  color:rgba(233,242,238,.72);
  max-width:34ch;
}
.footer-mono{
  margin-top:14px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}

.footer-title{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 0 14px;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--cyan);
}
.footer-title::before{
  content:"";
  width:14px;
  height:2px;
  background:var(--cyan);
  flex:0 0 auto;
}

.footer-links{display:grid;gap:9px}
.footer-links a{font-size:14.5px;color:rgba(233,242,238,.74)}
.footer-links a:hover{color:var(--cyan)}

.footer-contact{display:grid;gap:12px}
.footer-contact li{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:10px;
  align-items:baseline;
}
.footer-k{font-size:11.5px;letter-spacing:.08em;color:var(--mist)}
.footer-v{font-size:14.5px;line-height:1.65;color:rgba(233,242,238,.86)}

.footer-note{
  margin-top:16px;
  padding-left:12px;
  border-left:2px solid rgba(61,245,200,.28);
  font-size:12.5px;
  line-height:1.7;
  color:var(--mist);
  max-width:42ch;
}

.footer-base{
  max-width:var(--content-max);
  margin:clamp(30px,4vw,52px) auto 0;
  padding-top:18px;
  border-top:1px dashed var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
}
.footer-base__item{
  margin:0;
  font-size:12.5px;
  letter-spacing:.03em;
  color:var(--mist);
}

/* ---------- 14 入场显现 ---------- */
[data-reveal].is-armed{
  opacity:0;
  transform:translate3d(0,16px,0);
}
[data-reveal].is-armed.is-in{
  opacity:1;
  transform:none;
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}

/* ---------- 15 断点：平板与手机 ---------- */
@media (max-width:1023px){
  body{padding-top:var(--topbar-h)}
  body.is-nav-open{overflow:hidden}

  .site-header{
    top:0;
    left:0;
    right:0;
    bottom:auto;
    width:auto;
    height:var(--topbar-h);
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 16px;
    background:rgba(9,30,25,.94);
    backdrop-filter:blur(12px);
    border-right:0;
    border-bottom:1px solid var(--line);
    overflow:visible;
  }
  .site-header::before{display:none}

  .rail-brand{flex-direction:row;align-items:center;min-width:0;gap:0}
  .brand{gap:10px;min-width:0}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:12px;box-shadow:0 0 0 4px rgba(61,245,200,.10)}
  .brand-name{font-size:17px}
  .brand-tag{display:none}
  .rail-meta{display:none}

  .nav-toggle{
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:9px 14px;
    border:1px solid var(--line);
    border-radius:999px;
    background:rgba(61,245,200,.08);
    color:var(--paper);
    font-size:14px;
    font-weight:700;
  }
  .nav-toggle-bars{display:grid;gap:4px;width:16px}
  .nav-toggle-bars i{
    display:block;
    height:2px;
    border-radius:2px;
    background:var(--cyan);
    transition:transform var(--dur) var(--ease),opacity var(--dur) 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)}

  .site-nav{
    position:fixed;
    top:var(--topbar-h);
    right:0;
    bottom:0;
    width:min(360px,88vw);
    margin:0;
    padding:18px 18px 28px;
    gap:20px;
    background:linear-gradient(180deg,#0E2C24 0%,#0A211B 100%);
    border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(0,0,0,.5);
    transform:translateX(104%);
    visibility:hidden;
    opacity:0;
    overflow-y:auto;
    z-index:72;
    transition:transform .3s var(--ease),opacity .3s var(--ease),visibility .3s;
  }
  .site-nav[data-open]{
    transform:none;
    visibility:visible;
    opacity:1;
  }
  .nav-list{gap:4px}
  .nav-link{padding:13px 14px;font-size:16px}

  .rail-foot{margin-top:auto}

  .nav-scrim{
    display:block;
    position:fixed;
    inset:var(--topbar-h) 0 0 0;
    width:auto;
    height:auto;
    border:0;
    padding:0;
    background:rgba(4,14,11,.62);
    opacity:0;
    visibility:hidden;
    z-index:65;
    cursor:pointer;
    transition:opacity .3s var(--ease),visibility .3s;
  }
  .site-header[data-nav-open] .nav-scrim{
    opacity:1;
    visibility:visible;
  }

  .rail-progress{
    left:0;
    right:0;
    top:0;
    width:auto;
    height:3px;
  }
  .rail-progress span{
    transform:scaleX(var(--progress,0));
    transform-origin:left center;
  }

  .panel--slanted{clip-path:none}
}

@media (max-width:639px){
  .footer-contact li{grid-template-columns:1fr;gap:2px}
  .footer-note{max-width:none}
}

@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .footer-grid{grid-template-columns:1.5fr .85fr .85fr 1.3fr}
}

/* ---------- 16 降低动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .rail-progress span{transition:none}
  [data-reveal].is-armed{opacity:1;transform:none}
}