/* =========================================================
   宝威体育 · 官方直营品牌专区 V2.0
   site.css — 共享外壳 / 变量 / 基础组件
   ========================================================= */

/* ---------- 01. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4,h5{font-size:inherit;font-weight:inherit;line-height:1.2}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- 02. Variables ---------- */
:root{
  --bw-deep:#0B1F3A;
  --bw-midnight:#071427;
  --bw-panel:#102A4C;
  --bw-lime:#C6FF3D;
  --bw-orange:#FF6B35;
  --bw-cyan:#35E0D0;
  --bw-fog:#E6EDF5;
  --bw-steel:#8FA3BF;
  --bw-paper:#F4F7FB;
  --bw-ink:#04101F;

  --line:rgba(143,163,191,.22);
  --line-soft:rgba(143,163,191,.12);
  --line-strong:rgba(198,255,61,.45);

  --radius-s:6px;
  --radius-m:12px;
  --radius-l:22px;

  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
  --font-editorial:"Source Han Serif SC","Songti SC","Hiragino Mincho ProN",Georgia,"SimSun",serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Roboto Mono",Consolas,"Liberation Mono","Courier New",monospace;

  --rail-w:84px;
  --header-h:72px;

  --shadow-panel:0 20px 44px -28px rgba(4,16,31,.95);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 03. Base / 中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  color:var(--bw-fog);
  background-color:var(--bw-deep);
  background-image:
    linear-gradient(rgba(143,163,191,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,163,191,.075) 1px,transparent 1px),
    radial-gradient(1200px 620px at 88% -10%,rgba(53,224,208,.10),transparent 70%),
    radial-gradient(900px 520px at 6% 108%,rgba(198,255,61,.07),transparent 72%);
  background-size:96px 96px,96px 96px,auto,auto;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  letter-spacing:.01em;
}
main{display:block}
::selection{background:var(--bw-lime);color:var(--bw-ink)}
:focus-visible{outline:2px solid var(--bw-lime);outline-offset:3px;border-radius:4px}
.prose :focus-visible{outline-color:var(--bw-deep)}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  color:var(--bw-fog);
}

/* ---------- 04. 通用工具 ---------- */
.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:clamp(16px,3.4vw,40px)}
.container--narrow{max-width:880px}
.section{padding:clamp(44px,6vw,92px) 0}
.section--tight{padding:clamp(28px,4vw,56px) 0}
.section--paper{background:var(--bw-paper);color:var(--bw-ink)}
.section--paper h1,.section--paper h2,.section--paper h3{color:var(--bw-ink)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.mono{font-family:var(--font-mono)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.03em}
.rule{height:1px;background:var(--line);border:0;margin:0}

.eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--bw-lime)}
.eyebrow::before{content:"";display:inline-block;width:16px;height:1px;background:var(--bw-lime)}
.lede{max-width:38em;font-size:clamp(16px,1.5vw,19px);line-height:1.75;color:var(--bw-steel)}
.section--paper .lede{color:#3C5170}

.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px 28px;margin-bottom:clamp(20px,3vw,36px);padding-bottom:16px;border-bottom:1px solid var(--line)}
.section--paper .section-head{border-color:rgba(4,16,31,.14)}
.section-title{font-size:clamp(24px,3.2vw,38px)}
.section-kicker{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;color:var(--bw-cyan)}
.section-note{max-width:32em;font-size:13.5px;line-height:1.7;color:var(--bw-steel)}

.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;border:1px solid var(--line);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--bw-cyan)}
.badge--lime{color:var(--bw-lime);border-color:rgba(198,255,61,.5);background:rgba(198,255,61,.08)}
.badge--orange{color:var(--bw-orange);border-color:rgba(255,107,53,.5);background:rgba(255,107,53,.09)}

/* ---------- 05. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:10px;border:1px solid transparent;
  font-family:var(--font-display);font-size:14.5px;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-align:center;
  transition:transform .2s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn--primary{background:var(--bw-lime);border-color:var(--bw-lime);color:var(--bw-ink)}
.btn--primary:hover,.btn--primary:focus-visible{transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(198,255,61,.85)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--bw-fog)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--bw-cyan);color:var(--bw-cyan);transform:translateY(-2px)}
.btn--sm{padding:9px 16px;font-size:13px;border-radius:8px}

/* ---------- 06. 网格 ---------- */
.grid-12{display:grid;grid-template-columns:1fr;gap:clamp(16px,2.4vw,28px)}
.col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 1}
@media (min-width:900px){
  .grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}
  .col-3{grid-column:span 3}
  .col-4{grid-column:span 4}
  .col-5{grid-column:span 5}
  .col-6{grid-column:span 6}
  .col-7{grid-column:span 7}
  .col-8{grid-column:span 8}
  .col-9{grid-column:span 9}
  .col-12{grid-column:span 12}
}

/* ---------- 07. 面板与卡片 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.6vw,30px);
  background:linear-gradient(158deg,rgba(16,42,76,.96),rgba(11,31,58,.9));
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:var(--shadow-panel);
}
.panel::before{
  content:"";position:absolute;top:-1px;left:-1px;width:18px;height:18px;
  border-top:2px solid var(--bw-lime);border-left:2px solid var(--bw-lime);
  border-top-left-radius:var(--radius-m);opacity:.9;pointer-events:none;
}
.card{
  position:relative;
  padding:clamp(16px,2.2vw,24px);
  background:linear-gradient(160deg,rgba(16,42,76,.72),rgba(11,31,58,.55));
  border:1px solid var(--line-soft);
  border-radius:var(--radius-m);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(53,224,208,.45);box-shadow:0 22px 40px -30px rgba(53,224,208,.7)}

/* ---------- 08. 面包屑 ---------- */
.crumb{margin-bottom:22px}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--bw-steel)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li + li::before{content:"/";color:rgba(143,163,191,.55)}
.crumb a{color:var(--bw-steel);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumb a:hover{color:var(--bw-lime);border-bottom-color:var(--bw-lime)}
.crumb [aria-current="page"]{color:var(--bw-fog)}
.section--paper .crumb ol{color:#5A718F}
.section--paper .crumb a{color:#5A718F}
.section--paper .crumb a:hover{color:var(--bw-ink);border-bottom-color:var(--bw-ink)}
.section--paper .crumb [aria-current="page"]{color:var(--bw-ink)}

/* ---------- 09. 长文阅读区 ---------- */
.prose{
  background:var(--bw-paper);color:var(--bw-ink);
  border-radius:var(--radius-l);
  padding:clamp(22px,4vw,48px);
  font-size:16px;line-height:1.8;
}
.prose > * + *{margin-top:1em}
.prose h2{font-family:var(--font-display);font-size:clamp(20px,2.4vw,28px);font-weight:800;margin-top:1.8em;letter-spacing:-.01em}
.prose h3{font-family:var(--font-display);font-size:clamp(17px,2vw,21px);font-weight:700;margin-top:1.5em}
.prose p{max-width:40em;color:#152A42}
.prose ul,.prose ol{max-width:40em;padding-left:1.25em;display:grid;gap:.45em}
.prose ul{list-style:square}
.prose ol{list-style:decimal}
.prose li::marker{color:var(--bw-deep)}
.prose strong{color:var(--bw-ink);font-weight:700}
.prose a{color:#0B3F72;box-shadow:inset 0 -2px 0 rgba(53,224,208,.55)}
.prose a:hover{color:var(--bw-ink);box-shadow:inset 0 -2px 0 var(--bw-lime)}
.prose .num{color:var(--bw-ink);font-weight:700}

/* ---------- 10. 图片容器 ---------- */
.figure{
  position:relative;isolation:isolate;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:
    linear-gradient(135deg,rgba(53,224,208,.16),rgba(11,31,58,.92) 52%,rgba(198,255,61,.16)),
    var(--bw-midnight);
}
.figure > img{width:100%;height:100%;object-fit:cover}
.figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(230,237,245,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(230,237,245,.07) 1px,transparent 1px);
  background-size:34px 34px;
}
.figure--tall{aspect-ratio:3/4}
.figure--wide{aspect-ratio:21/9}
.figure--square{aspect-ratio:1/1}
.figure-cap{
  margin-top:10px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--bw-steel);
}

/* ---------- 11. 问答折叠（原生 details） ---------- */
.qa{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(16,42,76,.62);
  overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.qa + .qa{margin-top:10px}
.qa summary{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 18px;cursor:pointer;list-style:none;
  font-family:var(--font-display);font-size:15.5px;font-weight:700;color:var(--bw-fog);
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"+";font-family:var(--font-mono);font-size:16px;line-height:1.4;color:var(--bw-lime);flex:0 0 auto}
.qa[open]{border-color:rgba(198,255,61,.45);background:rgba(16,42,76,.9);box-shadow:inset 3px 0 0 var(--bw-lime)}
.qa[open] summary{color:var(--bw-lime)}
.qa[open] summary::before{content:"−"}
.qa-body{padding:0 18px 18px;font-size:14.5px;line-height:1.8;color:var(--bw-steel)}
.qa-body > p{max-width:42em}

/* ---------- 12. 头部外壳 ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:300;
  padding:11px 18px;border-radius:9px;
  background:var(--bw-lime);color:var(--bw-ink);
  font-family:var(--font-display);font-weight:700;font-size:14px;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:14px}

.site-header{position:sticky;top:0;z-index:80}
.header-bar{
  position:relative;
  display:flex;align-items:center;gap:22px;
  min-height:var(--header-h);
  padding:12px clamp(16px,3.2vw,40px);
  background:rgba(7,20,39,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{
  display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;
  color:var(--bw-fog);
}
.brand-mark{
  position:relative;display:grid;place-items:center;
  width:40px;height:40px;flex:0 0 auto;
  border:1px solid var(--line-strong);border-radius:10px;
  font-family:var(--font-mono);font-size:13.5px;font-weight:700;letter-spacing:.04em;
  color:var(--bw-lime);
  background:linear-gradient(158deg,rgba(198,255,61,.16),rgba(53,224,208,.07));
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;
  width:9px;height:9px;border-radius:2px;background:var(--bw-orange);
}
.brand-text{display:flex;flex-direction:column;gap:1px;line-height:1.2}
.brand-name{font-family:var(--font-display);font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--bw-fog)}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--bw-steel)}

.top-nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.top-nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 11px;border-radius:8px;
  font-size:14.5px;font-weight:500;color:var(--bw-fog);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;color:var(--bw-steel);transition:color .2s var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;
  background:var(--bw-lime);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--bw-lime);background:rgba(198,255,61,.06)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link:hover .nav-index{color:var(--bw-lime)}
.nav-link[aria-current="page"]{color:var(--bw-lime)}
.nav-link[aria-current="page"] .nav-index{color:var(--bw-lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);box-shadow:0 0 12px rgba(198,255,61,.7)}

.top-nav-aside{
  display:flex;align-items:center;gap:16px;
  padding-left:20px;border-left:1px solid var(--line);
}
.utility-list{display:flex;align-items:center;gap:14px}
.utility-link{
  font-size:13px;color:var(--bw-steel);
  border-bottom:1px dashed transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.utility-link:hover{color:var(--bw-cyan);border-bottom-color:rgba(53,224,208,.7)}

.nav-toggle{display:none}
.nav-toggle-bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle-bars::before,
.nav-toggle-bars::after{content:"";position:absolute;left:0;width:16px;height:2px;border-radius:2px;background:currentColor;transition:transform .24s var(--ease),top .24s var(--ease)}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{top:8px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:4px;transform:rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(143,163,191,.14);
  overflow:hidden;pointer-events:none;
}
.scroll-progress-bar{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--bw-cyan),var(--bw-lime) 62%,var(--bw-orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .12s linear;
}

/* ---------- 13. 侧边轨道 ---------- */
.rail{display:none}
@media (min-width:1200px) and (min-height:680px){
  body{padding-left:var(--rail-w)}
  .rail{
    position:fixed;left:0;top:0;bottom:0;width:var(--rail-w);z-index:95;
    display:flex;flex-direction:column;align-items:center;gap:14px;
    padding:16px 0 18px;
    background:linear-gradient(180deg,var(--bw-midnight),var(--bw-deep));
    border-right:1px solid var(--line);
  }
}
.rail-top{display:flex;flex-direction:column;align-items:center;gap:6px}
.rail-mark{
  display:grid;place-items:center;padding:5px 8px;
  border:1px solid var(--line-strong);border-radius:8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--bw-lime);background:rgba(198,255,61,.07);
}
.rail-ver{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--bw-steel)}
.rail-nav{flex:1 1 auto;width:100%;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none}
.rail-nav::-webkit-scrollbar{display:none}
.rail-list{display:flex;flex-direction:column;align-items:center;gap:8px;padding:4px 0}
.rail-link{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:9px 6px;border-radius:9px;
  color:var(--bw-steel);
  transition:color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.rail-num{font-family:var(--font-mono);font-size:10px;letter-spacing:.05em;opacity:.85}
.rail-label{writing-mode:vertical-rl;text-orientation:upright;font-size:12.5px;letter-spacing:.2em;line-height:1}
.rail-link:hover,.rail-link:focus-visible{color:var(--bw-lime);background:rgba(198,255,61,.09)}
.rail-link[aria-current="page"]{
  color:var(--bw-lime);
  background:rgba(198,255,61,.12);
  box-shadow:inset 2px 0 0 var(--bw-lime);
}
.rail-base{display:flex;flex-direction:column;align-items:center;gap:7px}
.rail-dot{
  width:6px;height:6px;border-radius:50%;background:var(--bw-lime);
  box-shadow:0 0 10px rgba(198,255,61,.9);
  animation:bw-pulse 2.6s var(--ease) infinite;
}
.rail-base-text{writing-mode:vertical-rl;text-orientation:upright;font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;color:var(--bw-steel)}
@keyframes bw-pulse{0%,100%{opacity:.45}50%{opacity:1}}

/* ---------- 14. 平板微调 ---------- */
@media (min-width:1080px) and (max-width:1179px){
  .nav-index{display:none}
  .utility-list{display:none}
  .top-nav{gap:14px}
  .nav-link{padding:9px 9px;font-size:14px}
}

/* ---------- 15. 移动端抽屉 ---------- */
@media (max-width:1079px){
  :root{--header-h:64px}
  .header-bar{padding:10px clamp(14px,4vw,22px);gap:12px}
  .brand-sub{display:none}
  .brand-mark{width:36px;height:36px;font-size:12.5px}

  .has-js .nav-toggle{
    display:inline-flex;align-items:center;gap:9px;margin-left:auto;
    padding:10px 14px;border-radius:9px;
    border:1px solid var(--line-strong);
    background:rgba(198,255,61,.09);color:var(--bw-lime);
    font-family:var(--font-display);font-size:13px;font-weight:700;
  }
  .nav-toggle-label{font-size:13px;letter-spacing:.08em}

  /* 无 JS 时的静态降级导航 */
  .top-nav{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    width:100%;margin:8px 0 0;padding:12px 0 4px;
    border-top:1px solid var(--line);
  }
  .top-nav-list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .nav-link{
    justify-content:flex-start;padding:12px 12px;font-size:16px;
    border-bottom:1px solid var(--line-soft);border-radius:8px;
  }
  .nav-link::after{display:none}
  .nav-index{display:inline-block;font-size:11px}
  .nav-link[aria-current="page"]{
    background:rgba(198,255,61,.11);
    box-shadow:inset 3px 0 0 var(--bw-lime);
  }
  .top-nav-aside{
    flex-direction:column;align-items:stretch;gap:14px;
    padding:16px 0 0;margin-top:12px;
    border-left:0;border-top:1px solid var(--line);
  }
  .utility-list{display:flex;flex-wrap:wrap;gap:10px 20px;padding:0 12px}
  .top-nav-aside .btn{width:100%}

  /* JS 抽屉模式 */
  .has-js .top-nav{
    position:fixed;top:var(--header-h);right:0;bottom:0;left:auto;
    width:min(340px,88vw);
    margin:0;padding:22px 20px 44px;
    background:linear-gradient(180deg,var(--bw-deep),var(--bw-midnight));
    border-top:0;border-left:1px solid var(--line);
    box-shadow:-28px 0 60px -32px rgba(4,16,31,.95);
    overflow-y:auto;overscroll-behavior:contain;
    z-index:90;
    transform:translateX(104%);
    visibility:hidden;
    transition:transform .3s var(--ease),visibility .3s var(--ease);
  }
  .has-js .top-nav[data-open="true"]{transform:translateX(0);visibility:visible}
  html.nav-open{overflow:hidden}
}

/* ---------- 16. 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bw-midnight) 0%,var(--bw-ink) 100%);
  border-top:1px solid var(--line);
  color:var(--bw-fog);
  padding:clamp(44px,6vw,80px) clamp(16px,3.4vw,40px) 22px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(143,163,191,.075) 1px,transparent 1px);
  background-size:88px 100%;
}
.footer-inner{position:relative;z-index:2;max-width:1240px;margin-inline:auto}
.footer-grid{display:grid;grid-template-columns:1fr;gap:clamp(26px,4vw,52px)}
@media (min-width:760px){.footer-grid{grid-template-columns:1.2fr .8fr 1.4fr}}
@media (min-width:1080px){.footer-grid{grid-template-columns:1.3fr .7fr 1.5fr}}

.brand--footer .brand-mark{width:34px;height:34px;font-size:12px}
.brand--footer .brand-name{font-size:16px}
.brand--footer .brand-sub{letter-spacing:.14em}
.footer-col{min-width:0}
.footer-line{
  margin-top:16px;max-width:22em;
  font-family:var(--font-editorial);font-size:16.5px;line-height:1.7;color:var(--bw-fog);
}
.footer-area{margin-top:14px}
.footer-chip{
  display:inline-block;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(53,224,208,.35);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--bw-cyan);
}
.footer-title{
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;color:var(--bw-steel);
}
.footer-title-num{color:var(--bw-lime)}
.footer-links{display:grid;gap:10px}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;
  font-size:14.5px;color:var(--bw-fog);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link::before{
  content:"";width:6px;height:6px;flex:0 0 auto;border-radius:2px;
  border:1px solid var(--bw-steel);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--bw-lime);transform:translateX(3px)}
.footer-link:hover::before,.footer-link:focus-visible::before{background:var(--bw-lime);border-color:var(--bw-lime)}

.footer-contact{display:grid;gap:12px}
.contact-row{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:12px;align-items:baseline;
  padding-bottom:10px;border-bottom:1px dashed rgba(143,163,191,.2);
}
.contact-key{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--bw-steel)}
.contact-val{font-size:14.5px;line-height:1.65;color:var(--bw-fog);overflow-wrap:anywhere}
.contact-val--mono{
  font-family:var(--font-mono);font-size:13.5px;letter-spacing:-.01em;color:var(--bw-lime);
}
.footer-note{margin-top:16px;max-width:46em;font-size:12.5px;line-height:1.8;color:var(--bw-steel)}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;margin-top:clamp(28px,4vw,48px);padding-top:18px;
  border-top:1px solid var(--line);
}
.footer-copy,.footer-icp,.footer-meta{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--bw-steel);
}
.footer-watermark{
  position:absolute;right:-2vw;bottom:-8px;z-index:1;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(48px,11vw,150px);line-height:1;letter-spacing:-.03em;
  color:rgba(143,163,191,.07);
  white-space:nowrap;pointer-events:none;user-select:none;
}

/* ---------- 17. 显现动效 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 18. 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rail-dot{animation:none;opacity:1}
  .has-js [data-reveal]{opacity:1;transform:none;transition:none}
  .card:hover,.btn:hover{transform:none}
  .scroll-progress-bar{transition:none}
}