/* ============================================================
   中欧体育赛场 · /assets/site.css
   深夜球场绿 + 荧光青 + 裁判红 + 计分牌琥珀
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --green-900:#04150E;
  --green-700:#0A2A1C;
  --green-500:#14523A;
  --cyan-400:#2FF0C4;
  --cyan-200:#9BFFE6;
  --red-500:#FF3B4E;
  --amber:#FFB020;
  --paper:#F2F7F4;
  --mist:#8FA79C;
  --glass:rgba(255,255,255,.08);
  --fog:#EEF3EF;
  --ink-900:#071B13;
  --ink-600:#4A5C54;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:system-ui,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;

  --gutter:clamp(16px,4vw,40px);
  --shell-w:1280px;
  --gap-s:20px;
  --gap-m:32px;
  --gap-l:56px;
  --r-s:8px;
  --r-m:14px;
  --r-l:22px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,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;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--cyan-200);outline-offset:3px;border-radius:4px;}

/* ---------- 3. 基准排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--green-900);
  background-image:
    radial-gradient(1100px 520px at 6% -8%, rgba(47,240,196,.10), transparent 62%),
    radial-gradient(900px 460px at 102% 2%, rgba(20,82,58,.55), transparent 58%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;line-height:1.25;color:var(--paper);}
h1{font-size:clamp(30px,4vw,52px);letter-spacing:-.01em;}
h2{font-size:clamp(26px,3vw,34px);}
h3{font-size:22px;}
h4{font-size:18px;}
p{max-width:68ch;}

/* ---------- 4. 布局工具 ---------- */
.shell{width:min(var(--shell-w),100% - var(--gutter)*2);margin-inline:auto;}
.section{position:relative;padding-block:clamp(48px,7vw,96px);}
.section--tint{background:var(--green-700);}
.section--band{background:var(--green-700);border-block:1px solid var(--green-500);}
.section--fog{background:var(--fog);color:var(--ink-900);}
.section--fog h1,.section--fog h2,.section--fog h3,.section--fog h4{color:var(--ink-900);}
.section--fog .prose,.section--fog .lead{color:var(--ink-600);}
.section--fog .label{color:#6B7D74;}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:clamp(28px,4vw,44px);
}
.section__head > *{max-width:58ch;}

.grid{display:grid;gap:var(--gap-m);}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}

/* ---------- 5. 文字与标签协议 ---------- */
.lead{font-size:clamp(17px,1.6vw,19px);line-height:1.7;color:rgba(242,247,244,.88);max-width:46ch;}
.prose{max-width:68ch;line-height:1.85;color:rgba(242,247,244,.8);}
.prose p + p{margin-top:1em;}

.label{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--mist);line-height:1.5;
}
.label--block{display:block;}
.label--cyan{color:var(--cyan-400);}

.num{
  display:block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(40px,8vw,96px);
  line-height:.95;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan-400);
}
.num--sm{font-size:clamp(28px,4vw,44px);}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-display);font-weight:600;font-size:15px;line-height:1;
  text-decoration:none;white-space:nowrap;
  transition:background .16s var(--ease),border-color .16s var(--ease),
             color .16s var(--ease),transform .16s var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn--primary{background:var(--cyan-400);color:#03160F;}
.btn--primary:hover{background:var(--cyan-200);}
.btn--ghost{border-color:var(--green-500);background:var(--glass);color:var(--paper);}
.btn--ghost:hover{border-color:var(--cyan-400);color:var(--cyan-200);}
.btn--quiet{
  padding:8px 14px;font-size:13px;border-radius:var(--r-s);
  border-color:rgba(20,82,58,.95);color:var(--mist);
}
.btn--quiet:hover{color:var(--cyan-400);border-color:var(--cyan-400);}
.btn--block{width:100%;}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--mist);text-transform:uppercase;
}
.breadcrumb a{color:var(--mist);text-decoration:none;transition:color .16s var(--ease);}
.breadcrumb a:hover{color:var(--cyan-400);}
.breadcrumb__sep{color:var(--green-500);}

/* ---------- 8. 卡片 / Bento / 数据块 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap-s);}
.card{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--r-m);
  background:var(--green-700);
  border:1px solid var(--green-500);
  overflow:hidden;
  transition:border-color .16s var(--ease),transform .16s var(--ease);
}
.card:hover{border-color:rgba(47,240,196,.55);}
.card--glass{
  background:var(--glass);
  border-color:rgba(155,255,230,.18);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.card--accent{border-color:rgba(47,240,196,.45);}
.card--accent::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:200px;height:200px;
  background:radial-gradient(circle,rgba(47,240,196,.16),transparent 68%);
  pointer-events:none;
}
.section--fog .card{background:#FFFFFF;border-color:rgba(7,27,19,.12);color:var(--ink-900);}
.section--fog .card .label{color:#6B7D74;}
.section--fog .card .stat__value{color:#0E7A5A;}

.stat{display:flex;flex-direction:column;gap:6px;}
.stat__value{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(28px,3.4vw,44px);line-height:1;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  color:var(--cyan-400);
}
.stat__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--mist);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  border:1px solid var(--green-500);color:var(--mist);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;line-height:1.6;
}
.tag--cyan{color:var(--cyan-400);border-color:rgba(47,240,196,.4);}
.tag--red{color:var(--red-500);border-color:rgba(255,59,78,.42);}
.tag--amber{color:var(--amber);border-color:rgba(255,176,32,.42);}

/* ---------- 9. 响应式图片容器（页面阶段放占位） ---------- */
.media{
  position:relative;overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--r-m);
  border:1px solid var(--green-500);
  background:linear-gradient(150deg,var(--green-700),var(--green-900));
}
.media--wide{aspect-ratio:21 / 9;}
.media--tall{aspect-ratio:4 / 5;}
.media--square{aspect-ratio:1 / 1;}
.media > img{width:100%;height:100%;object-fit:cover;object-position:center;}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,rgba(4,21,14,.72) 0%,rgba(4,21,14,0) 58%);
}
.media__tag{position:absolute;left:14px;top:14px;z-index:2;}
.media__caption{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--paper);margin:0;
}

/* ---------- 10. 标签页（联赛切换） ---------- */
.tabs{display:flex;flex-direction:column;gap:var(--gap-m);}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:6px;padding:5px;
  border:1px solid var(--green-500);border-radius:999px;
  background:rgba(10,42,28,.7);
}
.tab{
  padding:9px 18px;border-radius:999px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;
  color:var(--mist);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tab:hover{color:var(--paper);}
.tab[aria-selected="true"]{background:var(--cyan-400);color:#03160F;}
.tab-panel{animation:panel-in .24s var(--ease);}
.tab-panel[hidden]{display:none;}
@keyframes panel-in{from{opacity:0;}to{opacity:1;}}

/* ---------- 11. 展开组（问答 / 说明） ---------- */
.accordion{border-top:1px solid var(--green-500);}
.accordion__item{border-bottom:1px solid var(--green-500);}
.accordion__trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;text-align:left;
  font-family:var(--font-serif);font-weight:600;font-size:clamp(16px,1.6vw,19px);
  color:var(--paper);
  transition:color .16s var(--ease);
}
.accordion__trigger:hover{color:var(--cyan-200);}
.accordion__trigger[aria-expanded="true"]{color:var(--cyan-400);}
.accordion__icon{position:relative;flex:none;width:22px;height:22px;}
.accordion__icon::before,
.accordion__icon::after{
  content:"";position:absolute;left:0;right:0;top:50%;height:2px;
  background:currentColor;transform-origin:center;
}
.accordion__icon::after{transform:rotate(90deg);transition:transform .2s var(--ease);}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{transform:rotate(0deg);}
.accordion__panel{padding:0 4px 22px;font-size:15.5px;line-height:1.85;color:rgba(242,247,244,.78);}
.accordion__panel[hidden]{display:none;}
.section--fog .accordion,
.section--fog .accordion__item{border-color:rgba(7,27,19,.14);}
.section--fog .accordion__trigger{color:var(--ink-900);}
.section--fog .accordion__panel{color:var(--ink-600);}

/* ---------- 12. 锚点侧栏 ---------- */
.toc{position:sticky;top:120px;font-size:14px;}
.toc ul{display:grid;gap:6px;}
.toc a{
  display:block;padding:8px 12px;
  border-left:2px solid var(--green-500);
  color:var(--mist);text-decoration:none;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.toc a:hover{color:var(--paper);}
.toc a[aria-current]{color:var(--cyan-400);border-left-color:var(--cyan-400);}

/* ---------- 13. 入场显现 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.has-js [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 14. 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(4,21,14,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--green-500);
}
.skip-link{
  position:fixed;left:14px;top:-70px;z-index:200;
  padding:10px 18px;border-radius:0 0 10px 10px;
  background:var(--cyan-400);color:#03160F;
  font-family:var(--font-display);font-weight:600;font-size:14px;
  text-decoration:none;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:0;}

.header-top{
  overflow:hidden;max-height:60px;opacity:1;
  border-bottom:1px solid rgba(20,82,58,.6);
  transition:max-height .3s var(--ease),opacity .24s var(--ease),border-color .24s var(--ease);
}
.site-header[data-compact] .header-top{max-height:0;opacity:0;border-color:transparent;}
.header-top__inner{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  min-height:44px;padding-block:6px;
}
.header-top__brand{
  display:flex;align-items:center;gap:9px;margin:0;max-width:none;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--mist);
}
.brand-mark{
  flex:none;width:8px;height:8px;border-radius:50%;
  background:var(--cyan-400);box-shadow:0 0 0 4px rgba(47,240,196,.14);
}
.header-top__name{color:var(--cyan-200);}
.header-top__sep{color:var(--green-500);}
.header-top__suffix{color:var(--mist);}
.header-top__tagline{
  margin:0;max-width:none;font-size:12.5px;color:var(--mist);
}
.header-top__meta{display:flex;flex-wrap:wrap;gap:8px;margin-left:auto;}
.meta-chip{
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--green-500);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--mist);
}
.meta-chip--record{color:var(--mist);}
.meta-chip--live{color:var(--cyan-400);border-color:rgba(47,240,196,.35);}

.header-main__inner{
  display:flex;align-items:center;gap:24px;
  min-height:66px;padding-block:10px;
}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:inherit;}
.brand__glyph{
  flex:none;width:38px;height:38px;display:grid;place-items:center;
  border-radius:12px;color:var(--cyan-400);
  background:linear-gradient(150deg,var(--green-500),var(--green-700));
  border:1px solid rgba(47,240,196,.28);
}
.brand__glyph svg{width:22px;height:22px;}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__name{font-family:var(--font-serif);font-weight:700;font-size:17px;color:var(--paper);}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--mist);}

.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 14px 10px 12px;border-radius:12px;
  border:1px solid var(--green-500);background:var(--glass);color:var(--paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan-400);color:var(--cyan-200);}
.nav-toggle__bars{display:grid;gap:4px;width:18px;}
.nav-toggle__bars span{
  display:block;height:2px;border-radius:2px;background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.site-nav{display:flex;align-items:center;gap:14px;margin-left:auto;}
.site-nav__list{display:flex;align-items:center;gap:2px;}
.site-nav__link{
  position:relative;display:block;padding:10px 13px;border-radius:10px;
  font-size:14.5px;color:var(--paper);text-decoration:none;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--cyan-400);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.site-nav__link:hover{color:var(--cyan-200);}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--cyan-400);}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}
.site-nav__cta{margin-left:6px;}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;z-index:5;
  width:100%;height:2px;pointer-events:none;
  transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--cyan-400),var(--cyan-200));
  will-change:transform;
}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--green-900);
  border-top:1px solid var(--green-500);
  padding-block:clamp(40px,5vw,72px) 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr repeat(3,minmax(120px,.85fr)) 1.4fr;
  gap:var(--gap-m);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:4px;}
.footer-brand__line{
  margin-top:16px;max-width:30ch;
  font-family:var(--font-serif);font-size:17px;line-height:1.5;color:var(--cyan-200);
}
.footer-brand__note{margin-top:6px;max-width:34ch;font-size:14px;line-height:1.7;color:var(--mist);}

.footer-col__title{
  margin:0 0 14px;
  font-family:var(--font-mono);font-weight:400;font-size:11px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--mist);
}
.footer-col__list{display:grid;gap:9px;}
.footer-col__list a{
  font-size:14.5px;color:var(--paper);text-decoration:none;
  transition:color .16s var(--ease);
}
.footer-col__list a:hover{color:var(--cyan-400);}

.footer-contact__list{display:grid;gap:12px;}
.footer-contact__item{display:grid;gap:3px;}
.footer-contact__value{
  font-size:14px;line-height:1.6;color:var(--paper);word-break:break-word;
}
.footer-contact__note{margin-top:14px;max-width:36ch;font-size:13px;line-height:1.7;color:var(--mist);}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px;margin-top:clamp(28px,4vw,48px);padding-top:18px;
  border-top:1px solid rgba(20,82,58,.6);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--mist);
}
.footer-bottom__legal,
.footer-bottom__copy{margin:0;max-width:none;}

/* ---------- 16. 回到顶部（由脚本注入） ---------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,26px);bottom:clamp(14px,3vw,26px);z-index:55;
  display:grid;place-items:center;width:44px;height:44px;border-radius:50%;
  background:var(--green-700);border:1px solid var(--green-500);
  color:var(--cyan-400);font-size:17px;line-height:1;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),visibility .24s var(--ease),
             transform .24s var(--ease),border-color .16s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--cyan-400);}

/* ---------- 17. 无障碍辅助 ---------- */
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 18. 响应式 ---------- */
@media (max-width:1080px){
  .header-top__tagline{display:none;}
  .footer-grid{grid-template-columns:1.5fr repeat(3,minmax(100px,.9fr));}
  .footer-contact{grid-column:1 / -1;}
  .footer-contact__list{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:fixed;top:0;right:0;z-index:70;
    flex-direction:column;align-items:stretch;gap:0;
    width:min(340px,88vw);height:100dvh;
    margin-left:0;padding:82px 22px 32px;
    background:var(--green-700);
    border-left:1px solid var(--green-500);
    overflow-y:auto;
    visibility:hidden;
    transform:translateX(102%);
    transition:transform .28s var(--ease),visibility .28s var(--ease);
  }
  .site-nav[data-open]{transform:none;visibility:visible;}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .site-nav__link{
    padding:14px 12px;font-size:16px;border-radius:0;
    border-bottom:1px solid rgba(20,82,58,.55);
  }
  .site-nav__link::after{left:12px;right:auto;bottom:8px;width:28px;}
  .site-nav__cta{margin:20px 0 0;width:100%;}
  body.is-nav-open{overflow:hidden;}
}

@media (max-width:768px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-contact{grid-column:1 / -1;}
  .footer-contact__list{grid-template-columns:1fr;}
}

@media (max-width:600px){
  .header-top__meta{display:none;}
  .header-top__inner{min-height:38px;}
  .header-main__inner{gap:12px;min-height:58px;}
  .brand__sub{display:none;}
  .brand__glyph{width:34px;height:34px;border-radius:10px;}
  .section__head{align-items:flex-start;}
  .accordion__trigger{padding:16px 2px;}
}

@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{font-size:11px;}
}

/* ---------- 19. 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;
    scroll-behavior:auto!important;
  }
  .has-js [data-reveal]{opacity:1;transform:none;}
  .btn:hover{transform:none;}
  .to-top{transform:none;}
}