/* ===========================================================
   三亿赛事 · 共享样式 /assets/site.css
   基调：赛场夜光（深墨绿 · 炭黑 · 荧光青柠 · 暖橙红）
   =========================================================== */

/* ---------- 1 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--bar-h) + 14px)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}
summary::-webkit-details-marker{display:none}

/* ---------- 2 tokens ---------- */
:root{
  --night:#07130F;
  --panel:#101A17;
  --panel-2:#0A1713;
  --edge:#16362C;
  --lime:#C8FF3C;
  --lime-dim:#8FD82B;
  --flare:#FF5C2B;
  --amber:#FFC24B;
  --paper:#EEF3EF;
  --text:#CBD9D1;
  --muted:#7F948A;
  --ink:#08150F;
  --rail-w:104px;
  --bar-h:62px;
  --cut:12px;
  --font-display:"Barlow Condensed","Oswald","Roboto Condensed","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:"PingFang SC","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease-data:cubic-bezier(.2,.8,.2,1);
}

/* ---------- 3 基础排版 ---------- */
body{
  background:var(--night);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  padding-top:var(--bar-h);
  min-height:100vh;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.42;
  background-image:
    radial-gradient(rgba(200,255,60,.055) 1px,transparent 1px),
    radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:7px 7px,11px 11px;
  background-position:0 0,3px 5px;
}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--paper);font-weight:800;line-height:1.2;letter-spacing:.01em}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
html[data-nav-open="true"] body::after{
  content:"";position:fixed;inset:0;background:rgba(3,9,7,.66);z-index:45;
}

/* ---------- 4 header：侧边轨道 / 移动顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--bar-h);z-index:50;
  display:flex;align-items:center;gap:12px;padding:0 14px;
  background:var(--panel);
  border-bottom:1px solid var(--edge);
}
.skip-link{
  position:fixed;top:6px;left:6px;z-index:99;
  transform:translateY(-160%);transition:transform .14s linear;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  padding:8px 14px;clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.skip-link:focus{transform:translateY(0)}

.brand{flex:1 1 auto;display:flex;align-items:center;min-width:0}
.brand__link{display:flex;align-items:center;gap:10px;min-width:0}
.brand__mark{
  flex:0 0 auto;width:34px;height:34px;display:grid;place-items:center;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-display);font-weight:800;font-size:16px;letter-spacing:-.02em;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--font-display);font-weight:800;font-size:16px;letter-spacing:.08em;
  color:var(--paper);line-height:1.2;white-space:nowrap;
}
.brand__tagline{display:none;font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--muted)}

.nav-toggle{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:9px;
  padding:8px 11px;border:1px solid var(--edge);color:var(--text);
  cursor:pointer;transition:border-color .14s linear,color .14s linear;
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:var(--lime);transition:transform .14s linear,opacity .14s linear}
.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)}
.nav-toggle__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em}

.rail-nav{
  position:fixed;top:var(--bar-h);left:0;bottom:0;z-index:55;
  width:min(86vw,340px);padding:20px 14px 26px;
  background:var(--panel);border-right:1px solid var(--edge);border-left:3px solid rgba(200,255,60,.45);
  display:flex;flex-direction:column;gap:20px;
  overflow-y:auto;overflow-x:hidden;
  transform:translateX(-103%);
  transition:transform .24s ease-out;
}
.rail-nav[data-open]{transform:translateX(0)}
.rail-nav__list{display:grid;gap:2px}
.rail-nav__item{min-width:0}
.rail-nav__link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px;font-size:15px;font-weight:600;color:var(--text);
  border-left:2px solid transparent;
  transition:background .14s linear,color .14s linear,border-color .14s linear;
}
.rail-nav__link:hover{background:rgba(200,255,60,.07);color:var(--paper)}
.rail-nav__link[aria-current="page"]{
  color:var(--lime);border-left-color:var(--lime);background:rgba(200,255,60,.08);
}
.rail-nav__idx{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--muted);flex:0 0 auto;font-variant-numeric:tabular-nums;
}
.rail-nav__link[aria-current="page"] .rail-nav__idx{color:var(--lime)}
.rail-nav__label{min-width:0}
.rail-nav__foot{display:grid;gap:12px;margin-top:auto}
.rail-nav__note{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--muted);
}
.rail-nav__pulse{
  flex:0 0 auto;width:7px;height:7px;background:var(--lime);
  animation:pulse 2.2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(200,255,60,.55)}
  60%{opacity:.55;box-shadow:0 0 0 6px rgba(200,255,60,0)}
}

.scroll-meter{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(22,54,44,.85);pointer-events:none;
}
.scroll-meter__fill{
  display:block;height:100%;width:var(--p,0%);
  background:linear-gradient(90deg,var(--lime-dim),var(--lime));
}

/* ---------- 5 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid transparent;cursor:pointer;
  font-family:var(--font-display);font-weight:800;font-size:15px;letter-spacing:.08em;
  color:var(--paper);
  transition:background .14s linear,color .14s linear,border-color .14s linear,transform .14s linear;
}
.btn--lime{
  background:var(--lime);color:var(--ink);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.btn--lime:hover{background:#DFFF84}
.btn--ghost{border-color:var(--edge);color:var(--text)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-2px)}
.btn--block{width:100%}

/* ---------- 6 页脚 ---------- */
.site-footer{
  position:relative;margin-top:56px;
  background:linear-gradient(180deg,var(--panel),var(--night) 62%);
  border-top:1px solid var(--edge);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:5px;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(200,255,60,.55) 0 12px,transparent 12px 30px);
}
.site-footer::after{
  content:"";position:absolute;top:0;right:0;width:42%;height:100%;z-index:0;pointer-events:none;
  background:linear-gradient(212deg,rgba(200,255,60,.07),transparent 58%);
  clip-path:polygon(100% 0,100% 100%,0 100%);
}
.site-footer__inner{
  position:relative;z-index:1;
  width:100%;max-width:1280px;margin:0 auto;
  padding:54px 20px 34px;
  display:grid;gap:32px;grid-template-columns:1fr;
}
.site-footer__lead{display:grid;gap:10px;align-content:start}
.site-footer__brand{
  font-family:var(--font-display);font-weight:800;font-size:22px;letter-spacing:.14em;color:var(--lime);
}
.site-footer__slogan{
  font-family:var(--font-display);font-weight:800;font-size:24px;line-height:1.25;color:var(--paper);
}
.site-footer__kicker{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--muted);
}
.site-footer__cols{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(112px,1fr));gap:22px;align-content:start;
}
.site-footer__col{min-width:0}
.site-footer__heading{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.2em;color:var(--lime);margin-bottom:12px;
}
.site-footer__links{display:grid;gap:9px}
.site-footer__links a{
  font-size:15px;color:var(--text);
  border-bottom:1px solid transparent;transition:color .14s linear,border-color .14s linear;
}
.site-footer__links a:hover{color:var(--lime);border-color:var(--lime)}
.site-footer__contact{display:grid;gap:12px;align-content:start;min-width:0}
.contact-list{display:grid;gap:10px}
.contact-line{display:grid;grid-template-columns:42px 1fr;gap:10px;align-items:baseline}
.contact-line__key{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--muted);
}
.contact-line__value{font-size:14.5px;color:var(--text);word-break:break-word}
.copy-mail{
  justify-self:start;padding:0 0 2px;cursor:pointer;text-align:left;
  font-family:var(--font-mono);font-size:13.5px;letter-spacing:.02em;color:var(--paper);
  border-bottom:1px dashed var(--edge);
  transition:color .14s linear,border-color .14s linear;
}
.copy-mail:hover{color:var(--lime);border-color:var(--lime)}
.site-footer__note{font-size:13px;line-height:1.7;color:var(--muted)}
.site-footer__base{
  position:relative;z-index:1;
  width:100%;max-width:1280px;margin:0 auto;
  padding:16px 20px 22px;border-top:1px solid var(--edge);
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;color:var(--muted);
}
.site-footer__legal a{color:var(--text);border-bottom:1px solid var(--edge)}
.site-footer__legal a:hover{color:var(--lime);border-color:var(--lime)}
.site-footer__icp{color:var(--muted)}

/* ---------- 7 版心与节奏 ---------- */
.wrap{width:100%;max-width:1280px;margin:0 auto;padding-inline:20px}
.section{padding-block:52px}
.section--tight{padding-block:32px}
.section-head{display:grid;gap:10px;margin-bottom:26px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;color:var(--lime);
}
.eyebrow::before{content:"";width:9px;height:9px;background:var(--lime);flex:0 0 auto}
.section-title{font-size:26px;color:var(--paper)}
.lead{font-size:16px;line-height:1.75;color:var(--text);max-width:64ch}
.prose{font-size:16.5px;line-height:1.75;color:var(--text);max-width:70ch}
.prose p+p{margin-top:14px}
.prose h2{font-size:22px;margin:26px 0 10px}
.prose h3{font-size:18px;margin:20px 0 8px}
.prose ul{margin-top:12px;display:grid;gap:8px}
.prose ul li{position:relative;padding-left:18px}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:2px;background:var(--lime)}
.prose a{color:var(--lime);border-bottom:1px solid rgba(200,255,60,.4)}
.prose strong{color:var(--paper)}
.rule-slash{height:1px;background:repeating-linear-gradient(90deg,var(--edge) 0 10px,transparent 10px 20px);margin-block:34px}

/* ---------- 8 栅格与面板 ---------- */
.grid{display:grid;gap:18px;grid-template-columns:1fr}
.panel{border:1px solid var(--edge);background:var(--panel);padding:20px}
.card{
  position:relative;background:var(--panel);border:1px solid var(--edge);padding:20px;
  transition:transform .14s linear,box-shadow .14s linear,border-color .14s linear;
}
.card:hover{transform:translateY(-4px);border-color:rgba(200,255,60,.5);box-shadow:0 14px 34px rgba(0,0,0,.38)}
.card--cut{
  border:0;background:var(--panel);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  box-shadow:inset 0 0 0 1px var(--edge);
}
.card--cut:hover{
  box-shadow:inset 0 0 0 1px rgba(200,255,60,.55),0 14px 34px rgba(0,0,0,.38);
}
.panel--paper{background:var(--paper);border-color:var(--paper);color:#22332B}
.panel--paper h1,.panel--paper h2,.panel--paper h3{color:#0B1A14}
.panel--paper .lead,.panel--paper .prose,.panel--paper p{color:#2A3B33}
.panel--paper .prose a{color:#1F6B3A;border-bottom-color:rgba(31,107,58,.4)}

/* ---------- 9 数据组件 ---------- */
.stat{display:grid;gap:6px}
.stat__value{
  font-family:var(--font-display);font-weight:800;font-size:44px;line-height:1;
  color:var(--lime);font-variant-numeric:tabular-nums;
}
.stat__unit{font-size:15px;color:var(--muted);margin-left:5px;font-family:var(--font-mono)}
.stat__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--muted)}
.data-strip{
  display:flex;overflow-x:auto;scroll-snap-type:x proximity;
  border-block:1px solid var(--edge);background:var(--panel);
  -webkit-overflow-scrolling:touch;
}
.data-strip__item{
  flex:0 0 auto;min-width:172px;padding:16px 20px;scroll-snap-align:start;
  border-right:1px solid var(--edge);display:grid;gap:5px;
}
.data-strip__value{
  font-family:var(--font-mono);font-size:25px;color:var(--lime);font-variant-numeric:tabular-nums;line-height:1.1;
}
.data-strip__label{font-size:12.5px;color:var(--muted)}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  padding:4px 9px;border:1px solid var(--edge);background:rgba(22,54,44,.42);color:var(--text);
}
.chip--lime{color:var(--lime);border-color:rgba(200,255,60,.45)}
.chip--flare{color:var(--flare);border-color:rgba(255,92,43,.45)}
.chip--amber{color:var(--amber);border-color:rgba(255,194,75,.4)}

/* ---------- 10 图片容器 ---------- */
.media{
  position:relative;display:block;width:100%;overflow:hidden;
  background:linear-gradient(160deg,var(--panel) 0%,var(--panel-2) 100%);
  border:1px solid var(--edge);
}
.media>img{width:100%;height:100%;object-fit:cover;display:block}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--hero{aspect-ratio:5/4;min-height:260px}
.media--empty::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,rgba(200,255,60,.055) 0 9px,transparent 9px 22px);
}
.media__badge{
  position:absolute;top:10px;left:10px;z-index:2;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  padding:4px 9px;background:var(--lime);color:var(--ink);
}
.media__caption{
  position:relative;z-index:2;padding:9px 11px;border-top:1px solid var(--edge);
  font-family:var(--font-mono);font-size:11px;color:var(--muted);background:var(--panel-2);
}

/* ---------- 11 面包屑 / 折叠 / 路径 / 筛选 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted);
}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";color:var(--edge)}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--lime)}
.breadcrumbs [aria-current="page"]{color:var(--lime)}

.accordion{border:1px solid var(--edge);background:var(--panel)}
.accordion__item+.accordion__item{border-top:1px solid var(--edge)}
.accordion__item>summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:15px 18px;cursor:pointer;font-size:16px;font-weight:600;color:var(--paper);
  transition:background .14s linear,color .14s linear;
}
.accordion__item>summary:hover{background:rgba(200,255,60,.06);color:var(--lime)}
.accordion__item>summary::after{
  content:"+";font-family:var(--font-mono);font-size:17px;color:var(--lime);flex:0 0 auto;
}
.accordion__item[open]>summary::after{content:"–"}
.accordion__body{padding:0 18px 18px;font-size:15.5px;line-height:1.75;color:var(--text)}

.path{display:grid;position:relative}
.path__step{position:relative;display:grid;grid-template-columns:26px 1fr;gap:16px;padding-bottom:26px}
.path__step::before{
  content:"";position:absolute;left:12px;top:28px;bottom:0;width:1px;background:var(--edge);
}
.path__step:last-child{padding-bottom:0}
.path__step:last-child::before{display:none}
.path__node{
  width:26px;height:26px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:11px;color:var(--lime);
  background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--edge);
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
}
.path__title{font-family:var(--font-display);font-weight:800;font-size:18px;color:var(--paper);line-height:1.3}
.path__text{font-size:15px;color:var(--muted);margin-top:4px}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{
  padding:7px 13px;border:1px solid var(--edge);cursor:pointer;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
  transition:background .14s linear,color .14s linear,border-color .14s linear;
}
.filter-btn:hover{color:var(--lime);border-color:rgba(200,255,60,.5)}
.filter-btn[aria-pressed="true"]{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* ---------- 12 显现动效 ---------- */
html.js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .52s var(--ease-data),transform .52s var(--ease-data);
}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 13 响应式 ---------- */
@media (min-width:768px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__inner{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
  .site-footer__lead{grid-column:1/-1}
  .site-footer__contact{grid-column:1/-1}
  .section{padding-block:66px}
  .section-title{font-size:30px}
  .media--hero{aspect-ratio:16/7;min-height:340px}
}
@media (min-width:1024px){
  html{scroll-padding-top:24px;scroll-padding-left:calc(var(--rail-w) + 24px)}
  body{padding-top:0;padding-left:var(--rail-w)}
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

  .site-header{
    right:auto;bottom:0;height:100vh;height:100dvh;
    width:var(--rail-w);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:18px 10px 14px;
    border-bottom:0;border-right:1px solid var(--edge);
  }
  .brand{flex:0 0 auto;justify-content:center;margin-bottom:20px}
  .brand__link{flex-direction:column;gap:9px;text-align:center}
  .brand__mark{width:46px;height:46px;font-size:20px}
  .brand__text{align-items:center}
  .brand__name{font-size:13px;letter-spacing:.2em;white-space:normal;line-height:1.3}
  .brand__tagline{display:block;font-size:10px;line-height:1.4;margin-top:3px}
  .nav-toggle{display:none}

  .rail-nav{
    position:static;transform:none;width:100%;height:auto;
    flex:1 1 auto;min-height:0;
    background:transparent;border:0;border-radius:0;padding:0;
    display:flex;flex-direction:column;justify-content:space-between;gap:14px;
    overflow-y:auto;overflow-x:hidden;
    transition:none;
  }
  .rail-nav[data-open]{transform:none}
  .rail-nav__list{gap:4px}
  .rail-nav__link{
    flex-direction:column;align-items:center;gap:7px;
    padding:10px 4px 9px;text-align:center;
    border-left:0;font-size:12px;
  }
  .rail-nav__link:hover{background:rgba(200,255,60,.07)}
  .rail-nav__link[aria-current="page"]{border-left:0;background:rgba(200,255,60,.1)}
  .rail-nav__link[aria-current="page"]::before{
    content:"";position:absolute;left:-10px;top:50%;width:3px;height:22px;
    transform:translateY(-50%);background:var(--lime);
  }
  .rail-nav__idx{font-size:10px;letter-spacing:.18em}
  .rail-nav__label{
    width:2.3em;margin:0 auto;font-size:12px;line-height:1.5;letter-spacing:.04em;font-weight:600;
  }
  .rail-nav__foot{gap:10px;padding-bottom:4px}
  .rail-nav__note{
    flex-direction:column;justify-content:center;gap:6px;text-align:center;
    font-size:10px;line-height:1.5;
  }
  .btn--block{padding:10px 6px;font-size:12px;letter-spacing:.04em}

  .scroll-meter{top:0;bottom:0;left:auto;right:0;width:2px;height:auto}
  .scroll-meter__fill{width:100%;height:var(--p,0%)}

  .site-footer{margin-top:72px}
  .site-footer__inner{
    grid-template-columns:1.4fr 1.9fr 1.5fr;gap:34px;padding:60px 24px 40px;
  }
  .site-footer__lead,.site-footer__contact{grid-column:auto}
  .site-footer__slogan{font-size:28px}
  .site-footer__base{padding:16px 24px 24px}
  .wrap{padding-inline:24px}
  .section{padding-block:78px}
}
@media (min-width:1280px){
  :root{--rail-w:112px}
}

/* ---------- 14 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .rail-nav__pulse{animation:none;opacity:1}
}