/* ============================================================
   环球体育主站 · 共享样式 /assets/site.css
   夜间赛场指挥中心：深墨蓝底 + 荧光青 + 电光橙，锐利直角 + 精密网格
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink-900:#070C18;
  --ink-700:#101A2E;
  --ink-600:#16233D;
  --rock:#2B3138;
  --moss:#5C7A55;
  --clay:#B4643C;
  --paper:#F3EEE4;
  --cyan:#3FE0D0;
  --cyan-soft:rgba(63,224,208,.14);
  --orange:#FF7A2F;
  --orange-soft:rgba(255,122,47,.12);
  --cool:#8E97A3;
  --line:rgba(142,151,163,.24);
  --line-2:rgba(142,151,163,.46);
  --txt-soft:rgba(243,238,228,.74);
  --rail-w:96px;
  --bar-h:58px;
  --strip-h:56px;
  --shell:1480px;
  --gap:24px;
  --pad-x:clamp(20px,4.5vw,64px);
  --ease:cubic-bezier(.2,.7,.3,1);
  --f-display:"Oswald","Barlow Condensed","Arial Narrow",system-ui,"PingFang SC","Microsoft YaHei",sans-serif;
  --f-body:Inter,"Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
}

/* ---------- 2. reset 与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--rail-w);
  background:var(--ink-900);
  color:var(--paper);
  font-family:var(--f-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.15;letter-spacing:.01em}
h1{font-family:var(--f-display);font-size:clamp(44px,7vw,112px);font-weight:800;line-height:1;text-transform:uppercase}
h2{font-family:var(--f-display);font-size:clamp(28px,3.4vw,40px);font-weight:700}
h3{font-size:24px}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
a{color:inherit}
img,svg,video{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
::selection{background:var(--cyan);color:var(--ink-900)}
html[data-nav-open]{overflow:hidden}

/* ---------- 3. 通用排版与结构工具 ---------- */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding-inline:var(--pad-x)}
.shell--narrow{max-width:880px}
.section{position:relative;padding-block:clamp(56px,8vw,112px)}
.rule{height:1px;background:var(--line);border:0;margin:0}
.eyebrow{display:inline-block;font-family:var(--f-mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);margin-bottom:14px}
.num{font-family:var(--f-mono);font-size:1.6em;letter-spacing:-.02em;font-variant-numeric:tabular-nums}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-7{grid-column:span 7}
.span-12{grid-column:span 12}

.band{position:relative;min-height:clamp(140px,22vw,280px);display:flex;align-items:flex-end;overflow:hidden;border-block:1px solid var(--line);background:linear-gradient(118deg,var(--ink-700) 0%,#0a1120 58%,var(--ink-900) 100%)}
.band::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 79px,rgba(142,151,163,.12) 79px 80px);pointer-events:none}
.band__inner{position:relative;z-index:2;width:100%;padding-block:clamp(24px,4vw,48px)}

.chapter{display:flex;align-items:flex-start;gap:clamp(14px,2vw,28px)}
.chapter__num{font-family:var(--f-mono);font-size:clamp(28px,4vw,54px);line-height:1;color:var(--cyan)}
.chapter__title{font-family:var(--f-display);font-size:clamp(24px,3.2vw,40px);font-weight:700}
.chapter__lead{max-width:60ch;color:var(--txt-soft);margin-top:12px}

.panel{position:relative;background:var(--rock);border:1px solid var(--line);padding:clamp(18px,2.4vw,30px);transition:transform .2s var(--ease),border-color .2s var(--ease)}
.panel::before{content:"";position:absolute;top:-1px;left:-1px;width:34px;height:2px;background:var(--cyan)}
.panel:hover{transform:translateY(-4px);border-color:var(--line-2)}

.stat__head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--cool);margin-bottom:8px}
.stat__value{color:var(--paper);font-size:1.4em;font-variant-numeric:tabular-nums}
.stat__track{position:relative;height:8px;background:var(--ink-700);border:1px solid var(--line);overflow:hidden}
.stat__fill{position:absolute;inset:0 auto 0 0;width:var(--v,0%);background:var(--cyan);transition:width .9s var(--ease)}
.stat--orange .stat__fill{background:var(--orange)}
.stat--moss .stat__fill{background:var(--moss)}
html[data-motion="on"] .stat__fill{width:0}
html[data-motion="on"] .is-in .stat__fill{width:var(--v,0%);transition:width .9s var(--ease) .12s}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;border:1px solid var(--line-2);color:var(--cool)}
.tag--home{border-color:rgba(92,122,85,.75);background:rgba(92,122,85,.18);color:#B2CDA8}
.tag--away{border-color:rgba(180,100,60,.75);background:rgba(180,100,60,.16);color:#E7A982}
.tag--live{border-color:rgba(255,122,47,.6);background:var(--orange-soft);color:var(--orange)}

.crumb{max-width:var(--shell);margin:0 auto;padding:22px var(--pad-x) 0}
.crumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--cool)}
.crumb__list li::after{content:"/";margin-left:10px;color:rgba(142,151,163,.45)}
.crumb__list li:last-child::after{content:"";margin:0}
.crumb a{color:var(--cool);text-decoration:none}
.crumb a:hover{color:var(--cyan)}
.crumb [aria-current="page"]{color:var(--paper)}

.prose{max-width:720px}
.prose p{margin-bottom:1.4em}
.prose h3{font-family:var(--f-display);font-size:24px;margin:1.6em 0 .7em}
.prose ul{list-style:square;padding-left:1.3em;margin:0 0 1.4em}
.prose li{margin:.4em 0}
.prose--paper{background:var(--paper);color:var(--ink-700);padding:clamp(24px,4vw,56px);border-left:3px solid var(--clay)}
.prose--paper a{color:#0B5F58;text-decoration:underline;text-underline-offset:3px}
.prose--paper h3{color:var(--ink-900)}

.media-frame{position:relative;overflow:hidden;background:var(--ink-700);border:1px solid var(--line);aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame__cap{position:absolute;left:0;bottom:0;padding:8px 12px;background:rgba(7,12,24,.84);font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;color:var(--cool)}

/* ---------- 4. 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 22px;border:1px solid var(--line-2);color:var(--paper);font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;text-decoration:none;transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn:hover{transform:translateY(-4px);border-color:var(--cyan);color:var(--cyan)}
.btn--solid{background:var(--cyan);border-color:var(--cyan);color:var(--ink-900)}
.btn--solid:hover{background:#63EFE0;border-color:#63EFE0;color:var(--ink-900)}
.btn--orange{background:var(--orange);border-color:var(--orange);color:#140E08}
.btn--orange:hover{background:#FF9457;border-color:#FF9457;color:#140E08}
.btn--ghost{color:var(--cool)}
.btn--ghost:hover{color:var(--cyan)}

/* ---------- 5. 头部：框架式导轨导航 ---------- */
.skip-link{position:fixed;top:8px;left:8px;z-index:200;transform:translateY(-180%);padding:10px 16px;background:var(--cyan);color:var(--ink-900);font-family:var(--f-mono);font-size:13px;letter-spacing:.08em;text-decoration:none;transition:transform .18s var(--ease)}
.skip-link:focus{transform:none}

.site-header{position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:90;display:flex;flex-direction:column;background:linear-gradient(180deg,#0D1729 0%,var(--ink-900) 72%);border-right:1px solid var(--line)}
.header-hairline{position:fixed;top:0;left:var(--rail-w);right:0;height:1px;background:var(--line);z-index:89}
.header-progress{position:absolute;top:0;left:0;width:2px;height:100%;transform:scaleY(var(--p,0));transform-origin:top;background:linear-gradient(180deg,var(--cyan),var(--orange));box-shadow:0 0 12px rgba(63,224,208,.55);transition:transform .12s linear}

.site-header__bar{display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 8px 14px;border-bottom:1px solid var(--line)}

.brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none;color:var(--paper)}
.brand__glyph{display:grid;grid-template-columns:12px 1fr;grid-template-rows:1fr 1fr;gap:3px;width:34px;height:34px;flex:0 0 auto}
.brand__glyph span:nth-child(1){grid-row:1/3;background:var(--cyan)}
.brand__glyph span:nth-child(2){background:var(--orange)}
.brand__glyph span:nth-child(3){background:rgba(243,238,228,.5)}
.brand__text{display:flex;flex-direction:column;align-items:center;line-height:1.3}
.brand__name{font-family:var(--f-display);font-size:15px;font-weight:700;letter-spacing:.1em}
.brand__sub{font-family:var(--f-mono);font-size:9px;letter-spacing:.12em;color:var(--cool);text-transform:uppercase}

.site-header__tagline{display:none;margin:0;font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;color:var(--cool)}

.nav-toggle{display:none;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--line-2);background:rgba(16,26,46,.7);color:var(--paper);font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;transition:border-color .18s var(--ease),color .18s var(--ease)}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px;width:16px;height:16px;transition:transform .2s var(--ease)}
.nav-toggle__grid i{display:block;background:var(--cyan)}
.nav-toggle__grid i:nth-child(2){background:var(--orange)}
.nav-toggle__grid i:nth-child(4){background:rgba(243,238,228,.6)}
.nav-toggle[aria-expanded="true"] .nav-toggle__grid{transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__grid i{background:var(--orange)}

.site-nav{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;padding:14px 10px 16px;border-top:1px solid var(--line)}
.site-nav__list{flex:1 1 auto;display:flex;flex-direction:column;justify-content:center;gap:4px}
.site-nav__item{display:block}
.site-nav__link{display:flex;flex-direction:column;align-items:center;gap:6px;padding:11px 6px;border-left:2px solid transparent;color:var(--cool);font-size:12.5px;line-height:1.35;text-align:center;text-decoration:none;transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.site-nav__num{font-family:var(--f-mono);font-size:10px;letter-spacing:.12em;opacity:.75}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--paper);background:var(--cyan-soft);border-left-color:var(--cyan)}
.site-nav__link[aria-current="page"]{color:var(--paper);border-left-color:var(--orange);background:linear-gradient(90deg,var(--orange-soft),transparent)}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--orange);opacity:1}
.site-nav__foot{margin-top:12px}
.site-nav__cta{display:block;padding:12px 8px;border:1px solid rgba(63,224,208,.45);background:linear-gradient(180deg,rgba(63,224,208,.18),rgba(63,224,208,.05));color:var(--cyan);font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-align:center;text-decoration:none;transition:background .18s var(--ease),color .18s var(--ease)}
.site-nav__cta:hover{background:var(--cyan);color:var(--ink-900)}

/* ---------- 6. 可展开内容组与选项卡 ---------- */
.acc{border-top:1px solid var(--line)}
.acc__item{border-bottom:1px solid var(--line)}
.acc__trigger{display:flex;width:100%;align-items:center;gap:16px;padding:20px 4px;text-align:left;font-size:17px;color:var(--paper);transition:color .18s var(--ease)}
.acc__trigger:hover{color:var(--cyan)}
.acc__idx{font-family:var(--f-mono);font-size:12px;color:var(--cyan)}
.acc__sign{position:relative;width:14px;height:14px;flex:0 0 auto;margin-left:auto}
.acc__sign::before,.acc__sign::after{content:"";position:absolute;background:var(--cool);transition:transform .2s var(--ease),background .2s var(--ease)}
.acc__sign::before{left:0;right:0;top:6px;height:2px}
.acc__sign::after{top:0;bottom:0;left:6px;width:2px}
.acc__item.is-open .acc__sign::before{background:var(--orange)}
.acc__trigger[aria-expanded="true"] .acc__sign::after{transform:scaleY(0)}
.acc__panel{height:0;overflow:hidden;transition:height .28s var(--ease)}
.acc__panel-inner{max-width:72ch;padding:0 4px 24px;color:var(--txt-soft)}

.tabs{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.tab{padding:12px 20px;border-bottom:2px solid transparent;color:var(--cool);font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease)}
.tab:hover{color:var(--paper)}
.tab[aria-selected="true"]{color:var(--paper);border-bottom-color:var(--orange);background:var(--orange-soft)}
[data-tab-panel]{padding-top:clamp(18px,2.4vw,32px)}
[data-tab-panel][hidden]{display:none}

/* ---------- 7. 页脚 ---------- */
.site-footer{position:relative;margin-top:clamp(48px,7vw,110px);background:var(--ink-900);border-top:1px solid var(--line);overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0 0 auto 0;height:240px;background:linear-gradient(180deg,var(--ink-700),rgba(16,26,46,0));pointer-events:none}
.site-footer::after{content:"";position:absolute;top:0;left:0;right:0;height:240px;background:repeating-linear-gradient(115deg,transparent 0 118px,rgba(142,151,163,.13) 118px 119px);pointer-events:none}

.quick-strip{position:relative;z-index:2;display:flex;align-items:center;gap:clamp(14px,2vw,28px);max-width:var(--shell);margin:0 auto;padding:14px var(--pad-x);border-bottom:1px solid var(--line);font-family:var(--f-mono);font-size:12px;letter-spacing:.08em}
.quick-strip__label{display:inline-flex;align-items:center;color:var(--orange)}
.quick-strip__label::before{content:"";width:7px;height:7px;margin-right:8px;background:var(--orange);animation:pulse 2.4s infinite}
.quick-strip__link{color:var(--cool);text-decoration:none;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.quick-strip__link:hover{color:var(--paper);border-bottom-color:var(--cyan)}
.quick-strip__cta{margin-left:auto;padding:7px 14px;border:1px solid rgba(63,224,208,.42);color:var(--cyan);text-decoration:none;transition:background .18s var(--ease),color .18s var(--ease)}
.quick-strip__cta:hover{background:var(--cyan);color:var(--ink-900)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

.footer-wrap{position:relative;z-index:2;display:grid;grid-template-columns:4fr 5fr 3fr;gap:clamp(24px,4vw,64px);max-width:var(--shell);margin:0 auto;padding:clamp(40px,6vw,80px) var(--pad-x) clamp(28px,4vw,48px)}

.brand--footer{flex-direction:row;align-items:center;gap:14px}
.brand--footer .brand__text{align-items:flex-start}
.footer-brand__line{margin:20px 0 8px;font-family:var(--f-display);font-size:18px;letter-spacing:.03em;color:var(--paper)}
.footer-brand__note{margin:0;max-width:34ch;font-size:14px;color:var(--cool)}

.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.footer-col__title{position:relative;margin:0 0 16px;padding-left:14px;font-family:var(--f-mono);font-size:11px;font-weight:400;letter-spacing:.18em;color:var(--cool)}
.footer-col__title::before{content:"";position:absolute;left:0;top:6px;width:6px;height:6px;background:var(--cyan)}
.footer-col__list{display:flex;flex-direction:column;gap:2px}
.footer-col__link{display:inline-block;padding:6px 0;color:var(--txt-soft);font-size:15px;text-decoration:none;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-col__link:hover{color:var(--cyan);transform:translateX(4px)}
.footer-col__link[aria-current="page"]{color:var(--paper)}

.footer-contact__item{margin:0 0 14px;font-size:14px;line-height:1.6}
.footer-contact__key{display:block;font-family:var(--f-mono);font-size:10px;letter-spacing:.16em;color:var(--cool)}
.footer-contact__val{font-family:var(--f-mono);font-size:13px;color:var(--paper);word-break:break-word}
.footer-contact__hint{margin:0;font-size:13px;color:var(--cool);line-height:1.7}

.footer-legal{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;max-width:var(--shell);margin:0 auto;padding:18px var(--pad-x) 34px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;color:var(--cool)}
.footer-legal__item{margin:0}
.footer-legal__item:last-child{margin-left:auto}

/* ---------- 8. 动效门控 ---------- */
html[data-motion="on"] [data-reveal]{opacity:0;transform:translateY(16px)}
html[data-motion="on"] [data-reveal].is-in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}

/* ---------- 9. 平板 ---------- */
@media (max-width:1023px){
  body{padding-left:0;padding-top:var(--bar-h);padding-bottom:calc(var(--strip-h) + 10px)}

  .header-hairline{display:none}
  .site-header{inset:0 0 auto 0;width:auto;height:var(--bar-h);flex-direction:row;align-items:center;border-right:0;border-bottom:1px solid var(--line);background:rgba(7,12,24,.95);backdrop-filter:blur(10px)}
  .site-header__bar{flex:1 1 auto;flex-direction:row;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:0 14px;border-bottom:0}
  .brand{flex-direction:row;align-items:center;gap:10px}
  .brand__glyph{width:26px;height:26px;grid-template-columns:9px 1fr}
  .brand__text{align-items:flex-start}
  .site-header__tagline{display:none;margin:0 auto 0 16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .nav-toggle{display:inline-flex}
  .header-progress{top:auto;left:0;bottom:0;width:100%;height:2px;transform:scaleX(var(--p,0));transform-origin:left;box-shadow:0 0 10px rgba(63,224,208,.5)}

  .site-nav{position:fixed;top:var(--bar-h);left:0;right:0;bottom:0;display:block;margin:0;padding:22px 22px calc(24px + var(--strip-h));border-top:1px solid var(--line);background:var(--ink-900);overflow-y:auto;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s linear}
  .site-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .site-nav__list{display:flex;flex-direction:column;justify-content:flex-start;gap:0}
  .site-nav__link{flex-direction:row;align-items:baseline;gap:16px;padding:16px 4px;border-left:0;border-bottom:1px solid var(--line);font-size:19px;text-align:left}
  .site-nav__num{font-size:12px}
  .site-nav__link[aria-current="page"]{border-left:0;border-bottom-color:var(--orange);background:linear-gradient(90deg,var(--orange-soft),transparent)}
  .site-nav__foot{margin-top:24px}
  .site-nav__cta{padding:16px;font-size:13px}

  .quick-strip{position:fixed;left:0;right:0;bottom:0;z-index:95;max-width:none;margin:0;padding:14px 16px;border-top:1px solid var(--line-2);border-bottom:0;background:rgba(7,12,24,.96);backdrop-filter:blur(10px)}
  .quick-strip__link{display:none}
  .quick-strip__cta{margin-left:auto}

  .footer-wrap{grid-template-columns:1fr;gap:clamp(28px,5vw,44px)}
  .footer-nav{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-legal__item:last-child{margin-left:0}
  .footer-legal{padding-bottom:calc(28px + var(--strip-h) * .4)}
}

/* ---------- 10. 手机 ---------- */
@media (max-width:639px){
  body{font-size:16px;line-height:1.8}
  .grid{grid-template-columns:1fr}
  .span-3,.span-4,.span-5,.span-7,.span-12{grid-column:auto}
  .footer-nav{grid-template-columns:1fr 1fr}
  .footer-contact__val{font-size:12px}
  .chapter{flex-direction:column;gap:8px}
  .prose--paper{padding:22px 18px}
}

@media (min-width:560px) and (max-width:1023px){
  .site-header__tagline{display:block}
}

/* ---------- 11. 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}
  html[data-motion="on"] [data-reveal]{opacity:1;transform:none}
  html[data-motion="on"] .stat__fill{width:var(--v,0%)}
  .panel:hover,.btn:hover,.footer-col__link:hover{transform:none}
}