/* =========================================================
   BET体育 · 共享样式表 /assets/site.css
   夜间球场记分牌体系：深墨绿底 + 电光青交互 + 荧光黄数字
   ========================================================= */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- tokens ---------- */
:root{
  --ink:#06231D;
  --charcoal:#0F1214;
  --mid:#0E352C;
  --line:#123A38;
  --cyan:#35E0D4;
  --lime:#D9F94A;
  --flame:#FF6B3D;
  --ice:#7FD6FF;
  --paper:#E8F2EF;
  --muted:#8FA8A2;
  --ink-on-cyan:#04231F;

  --r-xl:28px;
  --r-lg:22px;
  --r-md:16px;
  --r-pill:999px;

  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --font-head:"Noto Sans SC Condensed","PingFang SC",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;

  --maxw:1240px;
  --gut:clamp(16px,4vw,32px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- base ---------- */
body{
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 420px at 12% -10%, rgba(53,224,212,.10), transparent 70%),
    radial-gradient(700px 380px at 92% 4%, rgba(127,214,255,.07), transparent 72%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;letter-spacing:-.01em;line-height:1.22}
h1{font-size:clamp(30px,4vw,44px)}
h2{font-size:clamp(21px,2.4vw,26px)}
h3{font-size:clamp(16px,1.6vw,19px);font-weight:700}
p{text-wrap:pretty}
::selection{background:var(--cyan);color:var(--ink-on-cyan)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
#main-content:focus-visible{outline:2px solid var(--cyan);outline-offset:-3px}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-left:var(--gut);padding-right:var(--gut)}
.section{padding:clamp(38px,5vw,60px) 0}
.section--tight{padding:clamp(24px,3vw,34px) 0}
.section--alt{background:var(--mid)}
.section--narrow .container{max-width:840px}
.section + .section{border-top:1px solid rgba(18,58,56,.65)}
.divider{height:1px;background:var(--line);width:100%}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:16px}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}

@media (max-width:1024px){
  .span-3,.span-4{grid-column:span 6}
}
@media (max-width:640px){
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
  .span-3,.span-4,.span-6,.span-8{grid-column:span 4}
}

/* ---------- typography helpers ---------- */
.mono,.num{font-family:var(--font-mono)}
.num{font-weight:700;color:var(--lime);letter-spacing:-.02em}
.lead{font-size:clamp(15.5px,1.7vw,17.5px);line-height:1.72;color:var(--paper)}
.prose{max-width:70ch;font-size:15.5px;line-height:1.8;color:var(--paper)}
.prose p + p{margin-top:1em}
.prose h2{margin:1.6em 0 .6em;font-size:22px}
.prose h3{margin:1.3em 0 .5em}
.prose ul{margin:.8em 0 .8em 1.1em;list-style:none}
.prose ul li{position:relative;padding-left:16px;margin-bottom:.45em}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.prose a{color:var(--cyan);background-image:linear-gradient(currentColor,currentColor);background-size:100% 1px;background-repeat:no-repeat;background-position:0 100%}
.prose a:hover{color:var(--lime)}

.eyebrow{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:11.5px;font-weight:700;color:var(--cyan);letter-spacing:.04em}
.eyebrow::before{content:"["}
.eyebrow::after{content:"]"}
.index-tag{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border:1px solid var(--line);border-radius:var(--r-pill);font-family:var(--font-mono);font-size:11px;color:var(--cyan);background:rgba(15,18,20,.55)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--r-pill);
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.btn-primary{background:var(--cyan);color:var(--ink-on-cyan)}
.btn-primary:hover{background:var(--lime);color:#10240A;transform:translateY(-2px)}
.btn-ghost{border-color:var(--line);color:var(--paper);background:rgba(15,18,20,.6)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:13px}

.btn-copy{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;color:var(--paper);
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.btn-copy:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-copy.is-copied{background:var(--lime);border-color:var(--lime);color:#10240A}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:120;
  padding:10px 18px;border-radius:0 0 14px 14px;
  background:var(--cyan);color:var(--ink-on-cyan);
  font-size:13px;font-weight:700;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(6,35,29,.97),rgba(6,35,29,.90) 62%,rgba(6,35,29,.95));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-rail{padding:12px 0 10px}
.header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:16px;
}
.brand{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand-mark{font-family:var(--font-head);font-size:22px;font-weight:800;letter-spacing:-.02em;line-height:1.1;color:var(--paper)}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.02em;color:var(--muted);white-space:nowrap}
.brand:hover .brand-mark{color:var(--cyan)}
.header-tagline{
  font-size:13px;color:var(--muted);text-align:center;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.header-tagline::before{content:"// ";font-family:var(--font-mono);color:var(--cyan)}
.header-actions{display:flex;align-items:center;gap:10px;justify-self:end}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:rgba(15,18,20,.7);
  font-family:var(--font-mono);font-size:11.5px;color:var(--paper);
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:14px;height:12px}
.nav-toggle-bars i{display:block;height:1.5px;width:14px;background:currentColor;border-radius:2px;transition:transform .18s var(--ease),opacity .18s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:first-child{transform:translateY(2.75px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:last-child{transform:translateY(-2.75px) rotate(-45deg)}
.nav-toggle-label{line-height:1}

.nav-shell{background:rgba(15,18,20,.55);border-top:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:8px 0}
.primary-nav{min-width:0}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-item{flex:0 0 auto}
.nav-link{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:14px;font-weight:500;color:var(--muted);white-space:nowrap;
  transition:color .16s var(--ease),background-color .16s var(--ease),border-color .16s var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.02em;color:rgba(53,224,212,.55);transition:color .16s var(--ease)}
.nav-label{line-height:1.2}
.nav-link:hover{color:var(--paper);border-color:var(--line);background:rgba(18,58,56,.42)}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink-on-cyan)}
.nav-link[aria-current="page"] .nav-index{color:rgba(4,35,31,.62)}
.nav-link[aria-current="page"] .nav-label{font-weight:700}

.status-strip{
  display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.02em;color:var(--muted);
  white-space:nowrap;
}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(217,249,74,.14)}

.nav-scale{
  height:8px;
  background-image:repeating-linear-gradient(90deg,rgba(53,224,212,.26) 0 1px,transparent 1px 26px);
  background-repeat:repeat-x;
  background-size:100% 5px;
  background-position:left bottom;
}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--ice) 55%,var(--lime));
  transition:transform .12s linear;
}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding-top:18px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;color:var(--muted)}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--line)}
.crumbs a:hover{color:var(--cyan)}

/* ---------- surfaces ---------- */
.panel{
  background:linear-gradient(180deg,rgba(18,58,56,.34),rgba(15,18,20,.86));
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:clamp(18px,2.4vw,26px);
  transition:border-color .16s var(--ease),transform .16s var(--ease);
}
.card{
  background:var(--charcoal);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:18px;
  transition:border-color .16s var(--ease),transform .16s var(--ease),background-color .16s var(--ease);
}
.panel:hover,.card:hover{border-color:var(--cyan);transform:translateY(-2px)}

.stat{
  display:flex;flex-direction:column;gap:6px;
  background:var(--charcoal);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:18px 20px;
  transition:border-color .16s var(--ease),transform .16s var(--ease);
}
.stat:hover{border-color:var(--cyan);transform:translateY(-2px)}
.stat-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--muted)}
.stat-value{font-family:var(--font-mono);font-weight:700;font-size:clamp(30px,4.4vw,44px);line-height:1;letter-spacing:-.02em;color:var(--lime)}
.stat-note{font-size:12px;line-height:1.6;color:var(--muted)}

/* ---------- pills / tabs ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:8px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(15,18,20,.7);
  font-size:12.5px;color:var(--muted);
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.pill:hover{border-color:var(--cyan);color:var(--cyan)}
.pill[aria-pressed="true"]{border-color:var(--cyan);color:var(--cyan);background:rgba(53,224,212,.10)}

.tabs{display:flex;flex-wrap:wrap;gap:8px}
.tab{
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(15,18,20,.65);
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.tab:hover{border-color:var(--cyan);color:var(--cyan)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink-on-cyan);font-weight:700}
.tab-panel{padding-top:16px}
.tab-panel[hidden]{display:none}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:22px}
.timeline::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line)}
.timeline-item{position:relative;padding-bottom:20px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-21px;top:8px;
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(53,224,212,.12);
}

/* ---------- media frames ---------- */
.media-frame{
  position:relative;width:100%;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-xl);
  background:linear-gradient(140deg,#0E352C 0%,#0F1214 58%,#06231D 100%);
  background-image:
    linear-gradient(140deg,#0E352C 0%,#0F1214 58%,#06231D 100%),
    repeating-linear-gradient(0deg,rgba(18,58,56,.55) 0 1px,transparent 1px 28px),
    repeating-linear-gradient(90deg,rgba(18,58,56,.55) 0 1px,transparent 1px 28px);
  background-blend-mode:normal,overlay,overlay;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 72% 16%,rgba(53,224,212,.16),transparent 62%);
}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--cover{aspect-ratio:16/9}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-figure{margin:0;display:grid;gap:10px}
.media-caption{font-family:var(--font-mono);font-size:11.5px;color:var(--muted)}

/* ---------- reveal & utilities ---------- */
.reveal{transition:opacity .45s var(--ease),transform .45s var(--ease)}
.js-ready .reveal{opacity:0;transform:translateY(14px)}
.js-ready .reveal.is-visible{opacity:1;transform:none}

.to-top{
  position:fixed;right:18px;bottom:18px;z-index:70;
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:50%;border:1px solid var(--line);
  background:var(--charcoal);color:var(--cyan);
  font-family:var(--font-mono);font-size:15px;line-height:1;
  opacity:0;pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease),border-color .16s var(--ease);
}
.to-top.is-shown{opacity:1;pointer-events:auto}
.to-top:hover{border-color:var(--cyan);transform:translateY(-2px)}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  background:linear-gradient(180deg,var(--ink) 0%,#041A16 62%,#040F0D 100%);
  border-top:1px solid var(--line);
}
.footer-inner{padding:clamp(40px,5vw,60px) var(--gut) 26px;max-width:var(--maxw);margin-inline:auto;width:100%}
.footer-top{display:grid;grid-template-columns:minmax(230px,1fr) minmax(0,2fr);gap:32px;align-items:start}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.footer-mark{font-family:var(--font-head);font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.footer-domain{font-family:var(--font-mono);font-size:11.5px;color:var(--muted)}
.footer-tagline{font-size:13.5px;color:var(--muted);margin:8px 0 16px;max-width:24em;line-height:1.7}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--cyan);
  letter-spacing:.02em;margin-bottom:14px;
}
.footer-col-title::before{content:"[ "}
.footer-col-title::after{content:" ]"}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-block;
  font-size:14px;color:var(--muted);
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-position:0 100%;background-size:0% 1px;
  transition:background-size .16s var(--ease),color .16s var(--ease);
}
.footer-link:hover{color:var(--cyan);background-size:100% 1px}

.footer-contact{
  margin-top:34px;padding:20px 0;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;gap:10px;
}
.contact-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.6}
.contact-key{font-family:var(--font-mono);font-size:11px;color:var(--cyan);flex:0 0 auto}
.contact-value{color:var(--paper);word-break:break-all}
.footer-note{font-size:12.5px;color:var(--muted);line-height:1.7;max-width:64ch;margin-top:2px}

.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;
  padding-top:20px;
  font-family:var(--font-mono);font-size:11.5px;color:var(--muted);
}
.footer-legal{white-space:nowrap}
.footer-copyright{letter-spacing:.01em}

/* ---------- responsive header ---------- */
@media (max-width:1024px){
  .header-tagline{display:none}
  .header-inner{grid-template-columns:auto auto}
  .header-actions{grid-column:2}
  .header-actions{justify-self:end}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .nav-inner{flex-direction:column;align-items:stretch;gap:10px;padding:10px 0 12px}
  .primary-nav{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .primary-nav[data-open]{max-height:60vh;overflow-x:auto;overflow-y:hidden}
  .nav-list{
    flex-direction:row;flex-wrap:nowrap;align-items:center;gap:8px;
    overflow-x:auto;-webkit-overflow-scrolling:touch;
    padding-bottom:6px;
  }
  .nav-list::-webkit-scrollbar{height:4px}
  .nav-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px}
  .nav-link{
    background:rgba(15,18,20,.85);border-color:var(--line);
    padding:8px 14px;font-size:13.5px;
  }
  .status-strip{font-size:10.5px;white-space:normal}
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
}
@media (max-width:860px) and (orientation:landscape){
  .header-rail{padding:8px 0 6px}
  .nav-inner{padding:6px 0 8px;gap:8px}
  .nav-link{padding:6px 12px;font-size:13px}
  .primary-nav[data-open]{max-height:72vh}
}
@media (max-width:560px){
  .brand-mark{font-size:19px}
  .brand-sub{font-size:9.5px}
  .header-actions{gap:8px}
  .header-actions .btn-primary{padding:8px 13px;font-size:12.5px}
  .footer-cols{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- motion safety ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-delay:0ms !important;
    transition-duration:.001ms !important;
  }
  .js-ready .reveal{opacity:1;transform:none}
  .btn:hover,.btn-ghost:hover,.panel:hover,.card:hover,.stat:hover,.to-top:hover{transform:none}
  .scroll-progress{transition:none}
}