/* =====================================================================
   6米乐赛场 · 共享外壳样式  /assets/site.css
   深海蓝底 + 蓝图网格 + 荧光绿 / 橙红霓虹点色 + 切角面板
   ===================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --c-deep:#071327;
  --c-grid:#123055;
  --c-cream:#F4EAD8;
  --c-ink:#1B1512;
  --c-neon:#3DFF9E;
  --c-orange:#FF5A2B;
  --c-amber:#FFC24B;
  --c-mist:#7FB8C9;
  --c-violet:#2A1B4A;
  --c-glass:rgba(255,255,255,.10);

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

  --shell:1280px;
  --pad:64px;
  --header-h:76px;
  --rail-w:96px;
  --gap:24px;
  --cut:18px;
  --cut-sm:10px;

  --clip-cut:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
  --clip-cut-sm:polygon(0 0,calc(100% - var(--cut-sm)) 0,100% var(--cut-sm),100% 100%,var(--cut-sm) 100%,0 calc(100% - var(--cut-sm)));
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-neon);outline-offset:3px}
::selection{background:var(--c-neon);color:#04140C}

/* ---------- 3. 基础排版 ---------- */
body{
  background-color:var(--c-deep);
  background-image:
    radial-gradient(1100px 520px at 84% -8%, rgba(61,255,158,.10), transparent 62%),
    radial-gradient(900px 540px at -6% 14%, rgba(42,27,74,.62), transparent 66%),
    linear-gradient(to right, rgba(18,48,85,.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(18,48,85,.55) 1px, transparent 1px);
  background-size:auto,auto,120px 120px,120px 120px;
  background-attachment:fixed;
  color:var(--c-mist);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html[data-nav-open="true"]{overflow:hidden}

.display-1{
  font-size:clamp(40px,6vw,72px);
  font-weight:900;
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--c-cream);
}
.display-2{
  font-size:clamp(30px,4vw,44px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.01em;
  color:var(--c-cream);
}
.heading-3{
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.3;
  color:var(--c-cream);
}
.lede{
  font-size:18px;
  line-height:1.8;
  color:var(--c-mist);
  max-width:62ch;
}
.prose{
  font-size:17px;
  line-height:1.8;
  max-width:66ch;
}
.prose p + p{margin-top:1.1em}
.prose strong{font-weight:800;color:var(--c-cream)}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose ul{margin:1em 0;display:grid;gap:.5em}
.prose ul li{position:relative;padding-left:18px}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:2px;background:var(--c-orange);
}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.22em;
  color:var(--c-orange);
  text-transform:uppercase;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--c-orange)}
.annotation{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.18em;
  color:var(--c-mist);
  writing-mode:vertical-rl;
  text-orientation:mixed;
}

/* ---------- 4. 布局骨架 ---------- */
main{display:block}
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:96px 0}
.section--tight{padding:56px 0}
.section--paper{
  background:var(--c-cream);
  color:var(--c-ink);
}
.section--paper .display-1,
.section--paper .display-2,
.section--paper .heading-3,
.section--paper strong{color:var(--c-ink)}
.section--paper .lede,
.section--paper .prose{color:#3A2E26}
.page-intro{padding:calc(var(--header-h) + 56px) 0 28px}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

.split{display:grid;grid-template-columns:7fr 5fr;gap:var(--gap);align-items:start}
.split--reverse{grid-template-columns:5fr 7fr}

.layout-rail{display:flex;gap:32px;align-items:flex-start}
.layout-rail > .layout-main{flex:1 1 auto;min-width:0}

.slant-rule{
  height:14px;
  margin:48px 0;
  border-left:3px solid var(--c-orange);
  background:repeating-linear-gradient(135deg,rgba(18,48,85,.9) 0 2px,transparent 2px 12px);
  opacity:.9;
}

.band{
  border-top:1px solid var(--c-grid);
  border-bottom:1px solid var(--c-grid);
  background:linear-gradient(90deg,rgba(18,48,85,.34),rgba(42,27,74,.28) 55%,rgba(7,19,39,.34));
  overflow:hidden;
}
.band-track{
  display:flex;
  gap:28px;
  align-items:center;
  overflow-x:auto;
  padding:18px var(--pad);
  scrollbar-width:thin;
  scroll-snap-type:x proximity;
}
.band-track > *{scroll-snap-align:start;flex:0 0 auto}

/* ---------- 5. 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 22px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;
  color:var(--c-mist);
}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:var(--c-grid)}
.breadcrumbs a{color:var(--c-mist);transition:color .2s ease}
.breadcrumbs a:hover{color:var(--c-neon)}
.breadcrumbs [aria-current="page"]{color:var(--c-amber)}
.section--paper .breadcrumbs,
.section--paper .breadcrumbs a{color:#6B5B50}
.section--paper .breadcrumbs a:hover{color:var(--c-orange)}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  font-family:var(--font-sans);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.02em;
  cursor:pointer;
  clip-path:var(--clip-cut-sm);
  transition:background-color .24s ease,color .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.btn-primary{
  background:var(--c-neon);
  color:#04140C;
  box-shadow:0 0 0 1px rgba(61,255,158,.35),0 14px 32px -20px rgba(61,255,158,.95);
}
.btn-primary:hover{background:#63FFB2;box-shadow:0 0 24px -4px rgba(61,255,158,.7)}
.btn-ghost{
  background:transparent;
  border-color:var(--c-grid);
  color:var(--c-cream);
}
.btn-ghost:hover{border-color:var(--c-neon);color:var(--c-neon)}
.btn-sm{padding:10px 16px;font-size:14px}

/* ---------- 7. 通用组件 ---------- */
.panel{
  position:relative;
  padding:28px;
  border:1px solid var(--c-grid);
  background:linear-gradient(160deg,rgba(18,48,85,.55),rgba(7,19,39,.88));
  clip-path:var(--clip-cut);
  transition:border-color .26s ease,background-color .26s ease;
}
.panel:hover{border-color:rgba(61,255,158,.6)}
.panel--paper{
  background:var(--c-cream);
  border-color:rgba(27,21,18,.16);
  color:var(--c-ink);
}
.panel--paper:hover{border-color:rgba(255,90,43,.6)}

.index-card{
  position:relative;
  padding:26px 24px 24px;
  border:1px solid var(--c-grid);
  background:rgba(18,48,85,.28);
  clip-path:var(--clip-cut);
  transition:border-color .26s ease,transform .26s ease;
}
.index-card::before{
  content:attr(data-index);
  position:absolute;top:10px;left:18px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.24em;
  color:var(--c-orange);
}
.index-card:hover{border-color:rgba(61,255,158,.65)}
.index-card > .index-card-title{
  margin-top:14px;
  font-size:18px;font-weight:700;color:var(--c-cream);
}

.notice-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;
  color:var(--c-amber);
  border:1px solid rgba(255,194,75,.45);
  background:rgba(255,194,75,.08);
  clip-path:var(--clip-cut-sm);
}
.notice-badge--live{color:var(--c-neon);border-color:rgba(61,255,158,.45);background:rgba(61,255,158,.08)}
.notice-badge--hot{color:var(--c-orange);border-color:rgba(255,90,43,.45);background:rgba(255,90,43,.08)}

.data-strip{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:1px;
  background:var(--c-grid);
  border:1px solid var(--c-grid);
}
.data-item{background:var(--c-deep);padding:20px 22px}
.data-value{
  display:block;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:clamp(26px,3vw,36px);
  line-height:1.1;
  color:var(--c-neon);
  transition:transform .24s ease;
}
.data-label{display:block;margin-top:6px;font-size:13px;color:var(--c-mist)}
.data-item:hover .data-value{transform:scale(1.02)}

.index-rail{
  position:sticky;
  top:calc(var(--header-h) + 24px);
  flex:0 0 var(--rail-w);
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  gap:18px;
  border-right:1px solid var(--c-grid);
  padding-right:16px;
}
.index-rail-link{
  display:flex;flex-direction:column;gap:4px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;
  color:var(--c-mist);
  transition:color .2s ease;
}
.index-rail-link:hover{color:var(--c-neon)}
.index-rail-link[aria-current="true"]{color:var(--c-orange)}

.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--c-grid);
  background:linear-gradient(150deg,#0B2140,#2A1B4A 68%,#071327);
  clip-path:var(--clip-cut);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.05) 0 1px,transparent 1px 4px);
  opacity:.55;
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.06em;
  color:var(--c-mist);
}

/* ---------- 8. 显现动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 9. 页头 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-70px;
  z-index:300;
  padding:10px 18px;
  background:var(--c-neon);
  color:#04140C;
  font-size:14px;font-weight:700;
  clip-path:var(--clip-cut-sm);
  transition:top .2s ease;
}
.skip-link:focus{top:12px}

.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(7,19,39,.34);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(18,48,85,.9);
  transition:background-color .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.site-header[data-stuck="true"]{
  background:rgba(7,19,39,.97);
  border-bottom-color:var(--c-grid);
  box-shadow:0 18px 44px -30px rgba(0,0,0,.95);
}
.header-shell{
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--pad);
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:28px;
  transition:height .3s ease;
}
.site-header[data-stuck="true"] .header-shell{height:64px}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;
  background:var(--c-neon);
  color:#04140C;
  font-family:var(--font-mono);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  clip-path:polygon(0 0,74% 0,100% 26%,100% 100%,26% 100%,0 74%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-line{
  font-size:18px;font-weight:800;letter-spacing:.04em;
  color:var(--c-cream);
}
.brand-tagline{
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.12em;
  color:var(--c-mist);
}

.primary-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;font-weight:500;
  color:var(--c-mist);
  transition:color .24s ease;
}
.nav-link::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s ease,background-color .24s ease;
}
.nav-link:hover{color:var(--c-cream)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--c-neon)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--c-orange)}

.nav-foot{display:none}
.nav-note{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;
  color:var(--c-mist);
}

.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.nav-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:9px 14px;
  border:1px solid var(--c-grid);
  color:var(--c-cream);
  font-size:14px;font-weight:600;
  clip-path:var(--clip-cut-sm);
  transition:border-color .24s ease,color .24s ease;
}
.nav-toggle:hover{border-color:var(--c-neon);color:var(--c-neon)}
.nav-toggle-bar{
  display:block;width:18px;height:2px;
  background:var(--c-neon);
  box-shadow:0 -6px 0 var(--c-neon),0 6px 0 var(--c-neon);
}
.nav-toggle-text{letter-spacing:.06em}

.scroll-progress{
  position:absolute;left:0;bottom:0;
  width:100%;height:2px;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--c-neon),var(--c-amber) 58%,var(--c-orange));
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:96px;
  background:linear-gradient(180deg,#050D1C 0%,#071327 58%,#061020 100%);
  border-top:1px solid var(--c-grid);
  overflow:hidden;
}

.footer-canvas{
  position:absolute;
  left:0;right:0;bottom:0;
  height:190px;
  pointer-events:none;
  opacity:.72;
}
.skyline{
  position:absolute;bottom:0;
  background:linear-gradient(180deg,#1B4272,#0A1B33);
}
.skyline-a{left:2%;width:44px;height:78px}
.skyline-b{left:8%;width:72px;height:142px;clip-path:polygon(0 14%,38% 14%,38% 0,62% 0,62% 14%,100% 14%,100% 100%,0 100%)}
.skyline-c{left:17%;width:34px;height:110px}
.skyline-d{left:66%;width:58px;height:128px;clip-path:polygon(0 22%,50% 0,100% 22%,100% 100%,0 100%)}
.skyline-e{left:76%;width:92px;height:94px}
.skyline-e::after{
  content:"";position:absolute;inset:12px 10px 0;
  background:repeating-linear-gradient(90deg,rgba(61,255,158,.35) 0 3px,transparent 3px 11px);
  opacity:.55;
}
.bridge{
  position:absolute;left:0;right:0;bottom:58px;height:2px;
  background:linear-gradient(90deg,transparent,rgba(255,90,43,.75) 18%,rgba(255,194,75,.85) 50%,rgba(255,90,43,.75) 82%,transparent);
  box-shadow:0 0 18px rgba(255,90,43,.45);
}
.river-glow{
  position:absolute;left:0;right:0;bottom:0;height:130px;
  background:radial-gradient(60% 100% at 50% 100%,rgba(127,184,201,.24),transparent 72%);
}

.footer-shell{
  position:relative;
  z-index:1;
  max-width:var(--shell);
  margin:0 auto;
  padding:76px var(--pad) 44px;
  display:grid;
  grid-template-columns:minmax(200px,1fr) 3fr;
  gap:48px;
}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-logo{
  font-size:22px;font-weight:900;letter-spacing:.04em;
  color:var(--c-cream);
}
.footer-tagline{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  color:var(--c-mist);
}
.footer-stamp{
  margin-top:6px;
  display:inline-block;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.18em;
  color:var(--c-orange);
  border:1px solid rgba(255,90,43,.4);
  clip-path:var(--clip-cut-sm);
}

.footer-columns{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px;
}
.footer-col-title{
  margin-bottom:16px;
  padding-bottom:10px;
  border-bottom:1px solid var(--c-grid);
  font-family:var(--font-mono);
  font-size:12px;font-weight:600;letter-spacing:.16em;
  color:var(--c-neon);
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  display:inline-block;
  font-size:14px;
  color:var(--c-mist);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--c-cream);transform:translateX(3px)}
.footer-contact{display:grid;gap:12px}
.footer-contact li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.7;
  color:var(--c-mist);
}
.footer-contact li::before{
  content:"";
  position:absolute;left:0;top:.72em;
  width:7px;height:2px;
  background:var(--c-orange);
}

.legal-bar{
  position:relative;
  z-index:1;
  border-top:1px solid var(--c-grid);
  background:rgba(4,10,22,.72);
}
.legal-inner{
  max-width:var(--shell);
  margin:0 auto;
  padding:20px var(--pad) 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
  justify-content:space-between;
  align-items:center;
}
.legal-line,.legal-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--c-mist);
}

/* ---------- 11. 手机底部快捷栏 ---------- */
.mobile-shortcut{display:none}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1080px){
  :root{--pad:40px;--gap:20px}
  .footer-shell{grid-template-columns:1fr;gap:36px}
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split--reverse{grid-template-columns:1fr}
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 8}
  .span-12{grid-column:span 8}
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr))}
  .layout-rail{gap:20px}
  .index-rail{flex:0 0 72px;width:72px}
}

@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(340px,86vw);
    padding:calc(var(--header-h) + 20px) 24px 32px;
    background:#0A1A33;
    border-left:1px solid var(--c-grid);
    box-shadow:-32px 0 60px -40px #000;
    display:flex;
    flex-direction:column;
    gap:22px;
    overflow-y:auto;
    transform:translateX(103%);
    transition:transform .34s cubic-bezier(.4,0,.2,1);
  }
  .primary-nav[data-open="true"]{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;margin:0}
  .nav-link{
    padding:14px 12px;
    font-size:17px;
    border-bottom:1px solid rgba(18,48,85,.7);
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    background:rgba(61,255,158,.08);
    color:var(--c-neon);
  }
  .nav-foot{display:block;margin-top:auto}
  .nav-foot .btn{width:100%}
}

@media (max-width:720px){
  :root{--pad:20px;--gap:16px;--header-h:66px}
  body{background-attachment:scroll;padding-bottom:68px}
  .section{padding:64px 0}
  .section--tight{padding:40px 0}
  .page-intro{padding:calc(var(--header-h) + 36px) 0 20px}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
  .span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:span 4}
  .header-cta{display:none}
  .brand-tagline{display:none}
  .brand-line{font-size:16px}
  .layout-rail{flex-direction:column}
  .index-rail{
    position:static;
    flex-direction:row;
    width:100%;
    gap:14px;
    overflow-x:auto;
    border-right:0;
    border-bottom:1px solid var(--c-grid);
    padding:0 0 12px;
  }
  .slant-rule{margin:32px 0}
  .footer-canvas{height:140px}
  .footer-shell{padding:56px var(--pad) 32px}
  .footer-columns{grid-template-columns:1fr}

  .mobile-shortcut{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:110;
    background:rgba(7,19,39,.95);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-top:1px solid var(--c-grid);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .shortcut-item{
    display:flex;align-items:center;justify-content:center;
    padding:12px 4px;
    font-size:12px;
    color:var(--c-mist);
    border-right:1px solid rgba(18,48,85,.8);
  }
  .shortcut-item:last-child{border-right:0}
  .shortcut-item:first-child{color:var(--c-neon)}
}

@media (max-width:420px){
  .footer-columns{grid-template-columns:1fr}
  .legal-inner{flex-direction:column;align-items:flex-start;gap:8px}
}

/* ---------- 13. 无障碍 · 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .scroll-progress{transition:none}
  .footer-links a:hover{transform:none}
  .data-item:hover .data-value{transform:none}
}