/* 13体育看台 · 共享样式 /assets/site.css */
:root{
  --ink-900:#071C16;
  --ink-800:#0C2B21;
  --ink-700:#0A1B2E;
  --slate:#23394A;
  --lime:#B6FF3B;
  --orange:#FF6A2A;
  --orange-deep:#B84015;
  --paper:#F4EBD0;
  --body:#C9D6D0;
  --body-dim:#8EA79E;
  --line:#2E5B4F;
  --font-display:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --radius:2px;
  --shadow-card:0 14px 0 -8px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.7;
  color:var(--body);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 88% -8%,rgba(182,255,59,.10),transparent 62%),
    radial-gradient(820px 480px at 2% 4%,rgba(255,106,42,.08),transparent 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--paper);font-weight:900;line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(40px,6vw,88px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(18px,2vw,24px)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
a{color:var(--lime)}
img{max-width:100%;height:auto}
button{font:inherit}
::selection{background:var(--lime);color:#06170F}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:1px}

/* 容器与网格 */
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.container--narrow{max-width:780px}
.section{padding-block:clamp(32px,5vw,64px)}
.stack{display:grid;gap:clamp(14px,2vw,24px)}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--split{grid-template-columns:minmax(0,1fr)}
.grid--thirds{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
@media (min-width:880px){
  .grid--split{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:start}
}

/* 跳转链接 */
.skip-link{
  position:absolute;left:16px;top:-80px;z-index:300;
  padding:10px 18px;background:var(--lime);color:#06170F;
  font-weight:800;text-decoration:none;border-radius:0 0 var(--radius) var(--radius);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(7,28,22,.93);
  backdrop-filter:blur(8px);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header[data-scrolled="true"]{background:rgba(7,28,22,.99);box-shadow:0 12px 28px -18px rgba(0,0,0,.95)}
.header-top{background:var(--ink-700);border-bottom:1px solid var(--line)}
.header-top__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:6px 18px;padding-block:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--body-dim);
}
.header-top__line{margin:0}
.header-top__meta{display:flex;align-items:center;gap:10px;margin:0;min-width:0}
.header-top__badge{
  display:inline-block;padding:2px 8px;background:var(--lime);color:#06170F;
  font-weight:800;font-size:11px;letter-spacing:.08em;transform:skewX(-8deg);
}
.header-top__text{color:var(--body-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.header-main{border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(12,43,33,.92),rgba(7,28,22,.92))}
.header-main__inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;padding-block:13px}

/* 品牌 */
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:inherit;flex:0 0 auto}
.brand__mark{
  position:relative;isolation:isolate;display:inline-grid;place-items:center;
  padding:9px 12px 7px;font-family:var(--font-mono);font-weight:800;font-size:28px;line-height:1;
  color:#06170F;letter-spacing:-.04em;font-variant-numeric:tabular-nums;
}
.brand__mark::before{
  content:"";position:absolute;inset:0;z-index:-1;background:var(--lime);
  transform:skewX(-8deg);border-radius:var(--radius);
  box-shadow:4px 4px 0 -1px var(--orange-deep);
}
.brand__text{display:grid;gap:2px;min-width:0}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:19px;letter-spacing:.01em;color:var(--paper);line-height:1.15}
.brand__sub{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--body-dim);line-height:1.3}
.brand--footer .brand__mark{font-size:23px;padding:8px 10px 6px}
.brand--footer .brand__name{font-size:17px}

/* 移动目录按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 13px;background:transparent;color:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius);
  font-size:13px;font-weight:700;letter-spacing:.06em;cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--lime);color:var(--lime)}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime);background:rgba(182,255,59,.08)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height: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)}
.nav-toggle__label{white-space:nowrap}

/* 主导航 */
.site-nav{display:flex;align-items:center;gap:10px;margin-left:auto;min-width:0}
.site-nav__list{display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin:0;padding:0;list-style:none}
.site-nav__item{display:inline-flex}
.site-nav__link{
  position:relative;display:inline-block;padding:10px 12px;
  color:var(--body);text-decoration:none;font-size:14.5px;font-weight:600;
  border:1px solid transparent;border-radius:var(--radius);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.site-nav__link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:6px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--paper);border-color:var(--line)}
.site-nav__link:hover::after,.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{
  color:var(--lime);background:rgba(182,255,59,.09);
  border-color:rgba(182,255,59,.38);font-weight:800;
}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]::before{
  content:"";position:absolute;top:5px;right:6px;width:5px;height:5px;
  background:var(--orange);border-radius:1px;
}
.site-nav__cta{flex:0 0 auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--font-body);font-size:14px;font-weight:800;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--lime{background:var(--lime);color:#06170F;box-shadow:3px 3px 0 0 var(--orange-deep)}
.btn--lime:hover,.btn--lime:focus-visible{transform:translate(-1px,-1px);box-shadow:5px 5px 0 0 var(--orange-deep)}
.btn--orange{background:var(--orange);color:#1B0A03;box-shadow:3px 3px 0 0 rgba(7,28,22,.9)}
.btn--orange:hover,.btn--orange:focus-visible{background:var(--orange-deep);color:var(--paper);transform:translate(-1px,-1px)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--lime);color:var(--lime);background:rgba(182,255,59,.07)}
.btn--block{width:100%}

/* 标签 / 眉标 / 面板 */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;
  font-size:12px;font-weight:700;letter-spacing:.04em;line-height:1.5;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(35,57,74,.55);color:var(--body);
}
.tag--lime{background:var(--lime);color:#06170F;border-color:var(--lime)}
.tag--orange{background:var(--orange);color:#1B0A03;border-color:var(--orange)}
.tag--paper{background:var(--paper);color:#0B211A;border-color:var(--paper)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;margin:0 0 12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--lime);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--orange);flex:0 0 auto}
.panel{
  position:relative;padding:clamp(18px,3vw,28px);
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-card);
}
.panel--night{background:var(--ink-700)}
.panel--paper{background:var(--paper);color:#0B211A;border-color:#0B211A}
.panel--paper h2,.panel--paper h3{color:#0B211A}
.rule{border:0;border-top:1px dashed var(--line);margin:clamp(24px,4vw,44px) 0}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* 面包屑 */
.breadcrumb{margin:0 0 clamp(16px,2.4vw,26px);font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--body-dim)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--body);text-decoration:none;border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.breadcrumb__link:hover,.breadcrumb__link:focus-visible{color:var(--lime);border-bottom-color:var(--lime)}
.breadcrumb__current{color:var(--lime)}

/* 长文 */
.prose{max-width:70ch;font-size:16.5px;line-height:1.78;color:var(--body)}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin:1.8em 0 .55em}
.prose h3{font-size:18px;color:var(--lime);margin:1.6em 0 .4em;letter-spacing:0}
.prose p{margin:0 0 1em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.25em}
.prose li{margin-bottom:.4em}
.prose a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--paper)}
.prose blockquote{
  margin:1.4em 0;padding:12px 18px;border-left:3px solid var(--orange);
  background:rgba(35,57,74,.45);color:var(--paper);
}
.prose table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:14.5px}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{
  background:rgba(35,57,74,.6);color:var(--paper);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;font-weight:700;
}

/* 图片容器基础规则（页面阶段放图） */
.media-frame{
  position:relative;display:block;margin:0;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(145deg,var(--ink-700),var(--ink-800));
  box-shadow:var(--shadow-card);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(182,255,59,.07) 0 1px,transparent 1px 24px);
}
.media-frame__img,.media-frame img{
  display:block;width:100%;height:100%;aspect-ratio:4/3;
  object-fit:cover;filter:saturate(.92) contrast(1.06);
}
.media-frame--wide .media-frame__img,.media-frame--wide img{aspect-ratio:16/9}
.media-frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;max-width:88%;
  padding:5px 11px;background:var(--paper);color:#0B211A;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
}

/* 页脚 */
.site-footer{
  position:relative;margin-top:clamp(48px,7vw,96px);
  background:linear-gradient(180deg,var(--ink-700),var(--ink-900) 72%);
  border-top:1px solid var(--line);color:var(--body);
}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;width:min(46%,520px);height:3px;background:var(--lime)}
.site-footer::after{content:"";position:absolute;top:-1px;left:calc(min(46%,520px) + 10px);width:70px;height:3px;background:var(--orange)}
.footer__inner{
  display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(26px,4vw,48px);
  padding-block:clamp(32px,5vw,56px) clamp(24px,4vw,40px);
}
.footer__brand{min-width:0}
.footer__brand-note{margin:16px 0 0;font-size:13.5px;line-height:1.7;color:var(--body);max-width:36ch}
.footer__contact{
  display:grid;gap:10px;margin-top:20px;padding:14px 16px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(12,43,33,.6);
}
.footer__contact-item{margin:0;font-size:13.5px;line-height:1.55;color:var(--paper);word-break:break-word}
.footer__contact-label{
  display:block;margin-bottom:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--orange);
}
.footer__nav{min-width:0}
.footer__cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:clamp(18px,3vw,32px)}
.footer__col{min-width:0}
.footer__title{
  margin:0 0 14px;padding-left:10px;border-left:3px solid var(--orange);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--paper);text-transform:uppercase;line-height:1.4;
}
.footer__list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.footer__link{
  display:inline-block;padding:2px 0;font-size:14px;color:var(--body);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease),padding-left .16s var(--ease);
}
.footer__link:hover,.footer__link:focus-visible{color:var(--lime);border-bottom-color:var(--lime);padding-left:4px}
.footer__legal{border-top:1px dashed var(--line);background:rgba(7,28,22,.65);padding-block:16px}
.footer__legal-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--body-dim);
}
.footer__legal-note,.footer__icp{margin:0}

/* JS 注入元素 */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:200;width:100%;height:3px;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  transform:scaleX(0);transform-origin:0 50%;pointer-events:none;
}
.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:130;
  width:46px;height:46px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:18px;font-weight:700;
  color:#06170F;background:var(--lime);border:1px solid var(--lime);
  border-radius:var(--radius);cursor:pointer;
  opacity:0;pointer-events:none;transform:translateY(8px);
  box-shadow:0 12px 26px -14px rgba(0,0,0,.95);
  transition:opacity .2s var(--ease),transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;pointer-events:auto;transform:none}
.to-top:hover,.to-top:focus-visible{background:var(--orange);border-color:var(--orange);color:#1B0A03}

/* 平板与移动 */
@media (min-width:960px){
  .footer__inner{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
}
@media (max-width:980px){
  .header-main__inner{row-gap:0}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;width:100%;flex-direction:column;align-items:stretch;gap:10px;
    margin:12px 0 4px;padding-top:12px;border-top:1px dashed var(--line);
  }
  .site-nav[data-open]{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px;width:100%}
  .site-nav__item{display:block}
  .site-nav__link{display:block;padding:12px 10px;border-bottom:1px solid rgba(46,91,79,.55);border-radius:0}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{border-bottom-color:rgba(182,255,59,.38)}
  .site-nav__cta{width:100%;justify-content:center}
}
@media (max-width:640px){
  body{font-size:16px}
  .header-top__text{display:none}
  .header-top__inner{justify-content:flex-start}
  .brand__name{font-size:17px}
  .brand__mark{font-size:24px;padding:8px 10px 6px}
  .header-top__line{font-size:11px}
  .footer__legal-inner{justify-content:flex-start}
  .grid--split,.grid--thirds{gap:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .to-top{transform:none}
  .btn--lime:hover,.btn--lime:focus-visible,
  .btn--orange:hover,.btn--orange:focus-visible{transform:none}
}