/* ============================================================
   亿德体育主站 — 共享样式表 /assets/site.css
   夜场深靛蓝基底 · 荧光青索引 · 信号橙操作点 · 草皮绿在场分区
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:140px}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

/* ---------- 2. Tokens ---------- */
:root{
  --ink:#0B1230;
  --ink-2:#16204A;
  --cyan:#2BF0D6;
  --orange:#FF6A2B;
  --grass-a:#0F7A4B;
  --grass-b:#35C46A;
  --cream:#F3EFE4;
  --text:#E8EDF7;
  --muted:#8C96B4;
  --data:#FFD166;
  --line:rgba(232,237,247,.14);
  --line-strong:rgba(43,240,214,.34);
  --shell:1200px;
  --r-lg:28px;
  --r:16px;
  --r-sm:10px;
  --font-head:"Archivo Narrow","Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. Base / 中文排版 ---------- */
body{
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 84% -10%,rgba(43,240,214,.10),transparent 62%),
    radial-gradient(880px 520px at 6% 4%,rgba(255,106,43,.09),transparent 64%),
    linear-gradient(180deg,rgba(15,122,75,.10),transparent 340px);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.22;letter-spacing:.015em;font-weight:700}
h1{font-size:clamp(30px,4.4vw,50px)}
h2{font-size:clamp(25px,3.3vw,38px);font-weight:300}
h3{font-size:clamp(19px,1.9vw,24px)}
h4{font-size:17px;font-weight:700;letter-spacing:.06em}
strong{font-weight:700}
::selection{background:rgba(43,240,214,.32);color:#fff}

/* ---------- 4. 容器与分区 ---------- */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 22px}
@media (min-width:1400px){:root{--shell:1300px}}
.section{padding:66px 0;position:relative}
.section--tight{padding:38px 0}
.section--cream{
  background:linear-gradient(180deg,var(--cream),#E9E3D4);
  color:#141B3D;
  --text:#141B3D;
  --muted:#5A6485;
  --line:rgba(20,27,61,.16);
  --ink-2:#FFFFFF;
}
.section--cream h2,.section--cream h3{color:#101736}
.section--cream .section-label{color:var(--grass-a)}

/* ---------- 5. 排版组件 ---------- */
.display{
  font-family:var(--font-head);
  font-weight:200;
  font-size:clamp(40px,7.4vw,88px);
  line-height:1.02;
  letter-spacing:-.005em;
  margin:0;
}
.display strong{font-weight:800;color:var(--cyan)}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--orange);
}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
}
.section-label::before{content:"";width:26px;height:1px;background:currentColor;flex:0 0 auto}
.index-num{
  display:block;
  font-family:var(--font-mono);
  font-weight:400;
  font-size:clamp(38px,8vw,92px);
  line-height:.86;
  color:rgba(43,240,214,.20);
}
.data-num{
  font-family:var(--font-mono);
  font-weight:700;
  color:var(--data);
  letter-spacing:-.01em;
}
.prose{max-width:70ch;color:var(--text)}
.prose p+p{margin-top:1.05em}
.prose h2,.prose h3{margin:1.6em 0 .6em}
.prose ul{list-style:none;margin:1em 0}
.prose ul li{position:relative;padding-left:22px}
.prose ul li+li{margin-top:.5em}
.prose ul li::before{content:"";position:absolute;left:2px;top:.78em;width:9px;height:1.5px;background:var(--cyan)}
.link{color:var(--cyan);border-bottom:1px solid rgba(43,240,214,.42);transition:background .2s,border-color .2s}
.link:hover{background:rgba(43,240,214,.1);border-bottom-color:var(--cyan)}
.stack>*+*{margin-top:14px}
.stack--lg>*+*{margin-top:26px}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px}

/* ---------- 6. 网格与卡片 ---------- */
.grid{display:grid;gap:22px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(238px,1fr))}
.grid--rail{grid-template-columns:minmax(180px,236px) minmax(0,1fr);gap:38px;align-items:start}
.card{
  position:relative;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:24px 22px;
  overflow:hidden;
}
.card::before{
  content:"";
  position:absolute;inset:0 auto auto 0;
  width:66px;height:3px;
  background:linear-gradient(90deg,var(--cyan),rgba(43,240,214,0));
}
.card--tint{background:linear-gradient(158deg,rgba(15,122,75,.30),rgba(22,32,74,.94) 62%)}
.card--flat::before{display:none}

/* ---------- 7. 标签 ---------- */
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(43,240,214,.10);
  border:1px solid rgba(43,240,214,.32);
  color:var(--cyan);
  font-size:12.5px;letter-spacing:.04em;
}
.tag--orange{background:rgba(255,106,43,.12);border-color:rgba(255,106,43,.42);color:#FFBE9C}
.tag--mono{font-family:var(--font-mono)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-body);font-size:15px;font-weight:600;letter-spacing:.03em;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),background .18s,color .18s,border-color .18s,box-shadow .18s;
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--orange);color:#1B0A02;box-shadow:0 12px 28px rgba(255,106,43,.26)}
.btn--primary:hover{background:#FF8149}
.btn--ghost{border-color:rgba(43,240,214,.5);color:var(--cyan);background:rgba(43,240,214,.07)}
.btn--ghost:hover{background:rgba(43,240,214,.16)}
.btn--quiet{background:rgba(232,237,247,.06);border-color:var(--line);color:var(--text)}
.btn--quiet:hover{background:rgba(232,237,247,.12)}

/* ---------- 9. 页面辅助 ---------- */
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:200;
  padding:12px 20px;border-radius:0 0 12px 12px;
  background:var(--cyan);color:#062018;font-weight:700;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transition:width .12s linear;
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:999px;
  border:1px solid rgba(43,240,214,.45);
  background:rgba(11,18,48,.92);
  color:var(--cyan);font-size:13px;letter-spacing:.06em;
  cursor:pointer;backdrop-filter:blur(8px);
  transition:background .2s,transform .2s var(--ease);
}
.to-top:hover{background:rgba(43,240,214,.18);transform:translateY(-2px)}
.reveal{transition:opacity .55s var(--ease),transform .55s var(--ease)}
html.js .reveal{opacity:0;transform:translateY(16px)}
html.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs{border-bottom:1px solid var(--line);background:rgba(22,32,74,.34)}
.breadcrumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
}
.breadcrumbs__sep{opacity:.5}
.breadcrumbs__link{color:var(--muted);transition:color .2s}
.breadcrumbs__link:hover{color:var(--cyan)}
.breadcrumbs__item[aria-current="page"]{color:var(--cyan)}

/* ---------- 11. 可展开内容组 ---------- */
.fold{
  border:1px solid var(--line);
  border-radius:var(--r);
  background:rgba(22,32,74,.66);
  overflow:hidden;
}
.fold+.fold{margin-top:12px}
.fold__head{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:18px 20px;
  background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  cursor:pointer;transition:background .2s,color .2s;
}
.fold__head:hover{background:rgba(43,240,214,.07)}
.fold__idx{font-family:var(--font-mono);font-size:12px;color:var(--muted);flex:0 0 auto}
.fold__icon{
  position:relative;flex:0 0 auto;margin-left:auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(43,240,214,.45);
}
.fold__icon::before,.fold__icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--cyan);transform:translate(-50%,-50%);
  transition:transform .25s var(--ease),opacity .25s;
}
.fold__icon::before{width:11px;height:1.5px}
.fold__icon::after{width:1.5px;height:11px}
.fold__head[aria-expanded="true"]{color:var(--cyan)}
.fold__head[aria-expanded="true"] .fold__icon{background:rgba(43,240,214,.14)}
.fold__head[aria-expanded="true"] .fold__icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.fold__body{height:auto;overflow:hidden;transition:height .3s var(--ease)}
.fold__inner{padding:0 20px 22px;color:var(--muted);font-size:16px;line-height:1.8}

/* ---------- 12. 图片容器（供页面阶段放置占位） ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r);border:1px solid var(--line);
  aspect-ratio:16/9;
  background-color:var(--ink-2);
  background-image:
    linear-gradient(135deg,rgba(15,122,75,.42),rgba(22,32,74,.92) 68%),
    repeating-linear-gradient(90deg,rgba(232,237,247,.07) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(0deg,rgba(232,237,247,.07) 0 1px,transparent 1px 36px);
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media__badge{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:5px 10px;border-radius:999px;
  background:rgba(11,18,48,.8);border:1px solid rgba(43,240,214,.42);
  color:var(--cyan);font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:16px 16px 12px;
  background:linear-gradient(0deg,rgba(11,18,48,.94),rgba(11,18,48,0));
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--text);
}
.media-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* ---------- 13. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,18,48,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.header-strip{background:linear-gradient(135deg,var(--grass-a),var(--grass-b));color:#08210F}
.header-strip__inner{
  display:flex;align-items:center;gap:16px;
  min-height:38px;padding-top:6px;padding-bottom:6px;
}
.header-strip__line{
  font-family:var(--font-head);font-weight:700;font-size:13.5px;
  letter-spacing:.08em;white-space:nowrap;
}
.utility-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;margin-left:auto}
.utility-link{
  font-size:13px;color:#08210F;
  border-bottom:1px solid rgba(8,33,15,.4);
  padding-bottom:1px;
  transition:background .2s,border-color .2s;
}
.utility-link:hover{background:rgba(8,33,15,.14);border-bottom-color:#08210F}
.header-strip__meta{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;
  color:rgba(8,33,15,.72);white-space:nowrap;
}
.header-main{position:relative;border-top:1px solid rgba(8,33,15,.16)}
.header-main__inner{display:flex;align-items:center;gap:20px;min-height:74px;padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;width:44px;height:44px;border-radius:14px;
  background:linear-gradient(140deg,rgba(43,240,214,.22),rgba(255,106,43,.18));
  border:1px solid rgba(43,240,214,.55);
  color:var(--cyan);font-family:var(--font-mono);font-size:14px;letter-spacing:.06em;
  box-shadow:0 0 0 4px rgba(43,240,214,.06);
}
.brand__text{display:flex;flex-direction:column;line-height:1.3}
.brand__name{font-family:var(--font-head);font-weight:800;font-size:18px;letter-spacing:.05em}
.brand__sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted)}
.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 15px;border-radius:999px;
  border:1px solid rgba(43,240,214,.45);
  background:rgba(43,240,214,.08);
  color:var(--cyan);font-size:13px;letter-spacing:.08em;cursor:pointer;
  transition:background .2s,color .2s,border-color .2s;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .22s var(--ease)}
.nav-toggle[aria-expanded="true"]{background:var(--orange);border-color:var(--orange);color:#1B0A02}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}
.site-nav{display:flex;align-items:center;gap:20px;margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 11px;border-radius:999px;
  font-size:14.5px;font-weight:500;white-space:nowrap;color:var(--text);
  transition:color .2s,background .2s;
}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--muted);transition:color .2s}
.site-nav__link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:5px;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.site-nav__link:hover{color:var(--cyan);background:rgba(43,240,214,.08)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(43,240,214,.11)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--orange)}
.site-nav__foot{display:flex;align-items:center;gap:14px}
.site-nav__foot .btn{padding:11px 20px;font-size:14px}
.site-nav__note{
  display:none;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;
  color:var(--muted);line-height:1.6;
}
@media (max-width:1199px){.site-nav__idx{display:none}}

/* ---------- 14. Footer ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,#0B1230,#070C20);
  border-top:1px solid var(--line);
}
.footer-pitch{
  background:linear-gradient(135deg,rgba(15,122,75,.30),rgba(53,196,106,.10));
  border-bottom:1px solid var(--line);
}
.footer-pitch__inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;padding:30px 0}
.footer-pitch__kicker{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--grass-b);
}
.footer-pitch__line{
  margin-right:auto;
  font-family:var(--font-head);font-weight:200;
  font-size:clamp(20px,3vw,32px);line-height:1.25;letter-spacing:.02em;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr repeat(4,minmax(0,1fr));
  gap:30px 26px;
  padding-top:52px;padding-bottom:44px;
}
.footer-col--brand{max-width:32ch}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);
}
.footer-list li+li{margin-top:9px}
.footer-link{font-size:14.5px;color:var(--text);border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.footer-link:hover{color:var(--cyan);border-bottom-color:rgba(43,240,214,.55)}
.footer-text{display:inline-block;font-size:13.5px;color:var(--muted);line-height:1.7}
.footer-text--mono{font-family:var(--font-mono);letter-spacing:.04em}
.footer-note{font-size:13.5px;line-height:1.75;color:var(--muted)}
.footer-note+.footer-note{margin-top:12px}
.footer-note--mono{font-family:var(--font-mono);font-size:12px;color:var(--grass-b);letter-spacing:.04em}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;
  padding-top:20px;padding-bottom:36px;
  border-top:1px solid var(--line);
}
.footer-meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted)}
.footer-base__links{display:flex;flex-wrap:wrap;gap:18px}
.footer-base__links .footer-link{font-size:12.5px;color:var(--muted)}
.footer-base__links .footer-link:hover{color:var(--cyan)}

/* ---------- 15. 焦点与动效偏好 ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
@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 .reveal{opacity:1;transform:none}
}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .header-main__inner{gap:14px}
  .site-nav{
    position:absolute;top:calc(100% + 1px);left:0;right:0;
    display:block;margin:0;padding:16px 20px 24px;
    background:linear-gradient(180deg,#131C42,#0B1230 72%);
    border-bottom:1px solid var(--line);
    box-shadow:0 28px 64px rgba(0,0,0,.6);
    max-height:calc(100vh - 130px);overflow:auto;
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;border-top:1px solid var(--line);padding-top:10px}
  .site-nav__item{border-bottom:1px solid rgba(232,237,247,.07)}
  .site-nav__link{padding:15px 10px;border-radius:12px;font-size:17px;width:100%}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--cyan);border-radius:0 12px 12px 0}
  .site-nav__idx{display:inline-block;font-size:11px}
  .site-nav__foot{flex-direction:column;align-items:stretch;gap:12px;margin-top:18px}
  .site-nav__foot .btn{width:100%}
  .site-nav__note{display:block}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding-top:40px}
  .footer-col--brand{grid-column:1/-1;max-width:none}
}
@media (max-width:900px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--rail{grid-template-columns:minmax(0,1fr);gap:26px}
}
@media (max-width:720px){
  body{font-size:16.5px}
  .section{padding:48px 0}
  .header-strip__meta{display:none}
  .header-strip__inner{flex-wrap:wrap;gap:6px 14px}
  .utility-list{margin-left:0;gap:6px 14px}
  .brand__mark{width:40px;height:40px;border-radius:12px}
  .brand__sub{display:none}
  .footer-base{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .shell{padding:0 16px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer-pitch__line{font-size:21px}
  .to-top{right:14px;bottom:16px;padding:10px 14px}
}