/* ==========================================================================
   196体育入口 — 共享样式 /assets/site.css
   夜间赛场数据舱：炭黑底 · 半透明玻璃轨道 · 电光青数据高亮 · 纸白长文层
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --abyss:#0A0C0F;
  --graphite:#14181D;
  --steel:#2A3138;
  --silver-500:#8C959D;
  --silver-100:#E8ECEF;
  --volt:#22E0D6;
  --orange:#FF6A2B;
  --turf:#6BFF8F;
  --violet:#7A5CFF;
  --paper:#F4EFE6;
  --paper-ink:#1B1D21;
  --glass:rgba(20,24,29,.72);
  --glass-strong:rgba(16,19,24,.96);
  --line:rgba(140,149,157,.22);
  --rail-w:88px;
  --rail-w-open:220px;
  --bar-h:64px;
  --gutter:clamp(16px,4vw,40px);
  --wrap-max:1280px;
  --read-max:760px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-body:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --font-display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --scroll-progress:0;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{max-width:100%;}
button{font:inherit;color:inherit;}
[hidden]{display:none!important;}

/* ---------- 3. 基础排版 ---------- */
body{
  margin:0;
  background:var(--abyss);
  color:var(--silver-100);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
h1,h2,h3,h4{font-weight:600;line-height:1.25;letter-spacing:-.01em;color:var(--silver-100);}
p{line-height:1.7;}
a{color:var(--volt);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#7CF3ED;}
strong{font-weight:600;color:#FFFFFF;}
:focus-visible{outline:2px solid var(--volt);outline-offset:2px;}

.display{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:-.02em;line-height:.96;}
.display--xl{font-size:clamp(48px,9vw,88px);}
.display--lg{font-size:clamp(38px,6vw,64px);}
.display--md{font-size:clamp(28px,4.4vw,44px);}
.display--sm{font-size:clamp(22px,3vw,32px);}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.num--xl{font-size:clamp(34px,6vw,56px);}
.num--lg{font-size:clamp(22px,3.4vw,28px);}
.num--md{font-size:18px;}
.num--sm{font-size:14px;}
.eyebrow{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--silver-500);}
.muted{color:var(--silver-500);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

/* ---------- 4. 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap-max);margin:0 auto;padding:0 var(--gutter);}
.wrap--read{max-width:var(--read-max);}
.section{padding:clamp(56px,9vw,120px) 0;}
.section--tight{padding:clamp(32px,5vw,64px) 0;}
.stack{display:flex;flex-direction:column;gap:16px;}
.rule{height:1px;background:var(--line);border:0;margin:0;}
.band{height:2px;border:0;margin:0;background:linear-gradient(90deg,var(--volt),rgba(34,224,214,0) 62%);}
.band--thick{height:8px;}
.band--signal{background:linear-gradient(90deg,var(--orange),rgba(255,106,43,0) 70%);}

.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 22px;margin-bottom:clamp(24px,4vw,44px);}
.sec-head__num{font-family:var(--font-mono);font-size:clamp(28px,4vw,44px);line-height:1;color:var(--volt);letter-spacing:.02em;}
.sec-head__title{font-family:var(--font-display);text-transform:uppercase;font-size:clamp(24px,3.4vw,32px);letter-spacing:-.02em;}
.sec-head__note{flex:1 1 260px;min-width:220px;color:var(--silver-500);font-size:14px;max-width:52ch;}

/* ---------- 5. 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;
  font-size:14px;letter-spacing:.02em;border:1px solid transparent;border-radius:2px;cursor:pointer;
  text-decoration:none;transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.btn--volt{background:var(--volt);color:#04191A;font-weight:600;}
.btn--volt:hover{background:#7CF3ED;color:#04191A;}
.btn--signal{background:var(--orange);color:#1A0C04;font-weight:600;}
.btn--signal:hover{background:#FF8A56;color:#1A0C04;}
.btn--ghost{background:transparent;border-color:var(--steel);color:var(--silver-100);}
.btn--ghost:hover{border-color:var(--volt);color:var(--volt);}

/* ---------- 6. 玻璃层与卡片 ---------- */
.glass{background:var(--glass);border:1px solid var(--line);border-radius:2px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);}
.card{display:flex;flex-direction:column;gap:12px;padding:clamp(18px,2.4vw,28px);
  background:var(--graphite);border:1px solid var(--steel);border-radius:2px;}
.card__kicker{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--volt);}
.card__title{font-size:clamp(18px,2.2vw,22px);}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--silver-500);}
.card__body{font-size:15px;color:var(--silver-500);}

/* ---------- 7. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.6vw,32px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--flow{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));}
.grid--split{grid-template-columns:minmax(0,6fr) minmax(0,4fr);}
.grid--split-rev{grid-template-columns:minmax(0,4fr) minmax(0,6fr);}
@media (max-width:820px){
  .grid--2,.grid--3,.grid--split,.grid--split-rev{grid-template-columns:minmax(0,1fr);}
}

/* ---------- 8. 图片容器 ---------- */
.media{position:relative;isolation:isolate;overflow:hidden;aspect-ratio:16/9;border-radius:2px;
  border:1px solid var(--steel);
  background:
    radial-gradient(120% 90% at 18% 8%,rgba(34,224,214,.20),transparent 62%),
    radial-gradient(90% 70% at 88% 92%,rgba(122,92,255,.20),transparent 66%),
    linear-gradient(160deg,#171C22,#0A0C0F 72%);}
.media__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(10,12,15,.06) 42%,rgba(10,12,15,.72));}
.media--wide{aspect-ratio:21/9;}
.media--tall{aspect-ratio:3/4;}
.media--square{aspect-ratio:1/1;}

/* ---------- 9. 纸白长文层 ---------- */
.paper{background:var(--paper);color:var(--paper-ink);border-radius:2px;}
.paper a{color:#0B6F69;}
.paper a:hover{color:#0A5D58;}
.paper__inner{max-width:640px;margin:0 auto;padding:clamp(24px,5vw,56px) clamp(20px,4vw,48px);}
.paper__title{color:#15171A;font-size:clamp(22px,3vw,30px);}
.paper__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:#5C625F;margin-top:10px;}
.article-body{font-size:16px;line-height:1.85;letter-spacing:.01em;color:#232629;}
.article-body p+p{margin-top:1.1em;}

/* ---------- 10. 面包屑 / 标签 / 指标 ---------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:18px 0;
  font-size:12px;letter-spacing:.08em;color:var(--silver-500);}
.crumbs__link{color:var(--silver-500);}
.crumbs__link:hover{color:var(--volt);}
.crumbs__sep{color:var(--steel);}
.crumbs__current{color:var(--silver-100);}

.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border:1px solid var(--steel);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--silver-500);}
.tag--volt{color:var(--volt);border-color:rgba(34,224,214,.42);}
.tag--signal{color:var(--orange);border-color:rgba(255,106,43,.42);}
.tag--live{color:var(--turf);border-color:rgba(107,255,143,.42);}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--turf);flex:none;
  animation:pulse-live 2.4s var(--ease) infinite;}
@keyframes pulse-live{
  0%{box-shadow:0 0 0 0 rgba(107,255,143,.55);}
  70%{box-shadow:0 0 0 8px rgba(107,255,143,0);}
  100%{box-shadow:0 0 0 0 rgba(107,255,143,0);}
}

.stat{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);}
.stat__label{font-size:13px;color:var(--silver-500);}
.stat__value{font-family:var(--font-mono);font-size:18px;letter-spacing:.04em;color:var(--silver-100);}

/* ---------- 11. 分段切换 ---------- */
.segmented{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:2px;
  background:var(--graphite);border:1px solid var(--steel);}
.segmented__tab{appearance:none;background:transparent;border:0;border-radius:2px;cursor:pointer;
  padding:8px 14px;font-size:13px;letter-spacing:.06em;color:var(--silver-500);
  transition:background .2s var(--ease),color .2s var(--ease);}
.segmented__tab:hover{color:var(--silver-100);}
.segmented__tab[aria-selected="true"],[role="tab"][aria-selected="true"]{background:var(--violet);color:#F3F0FF;}
.segmented__panel{padding-top:20px;}

/* ---------- 12. 显现动效 ---------- */
html.has-js [data-reveal]{opacity:0;transform:translateY(12px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);}
html.has-js [data-reveal][data-revealed]{opacity:1;transform:none;}

/* ==========================================================================
   13. 站点头部
   ========================================================================== */
.skip-link{position:fixed;z-index:200;top:-120px;left:12px;padding:10px 16px;border-radius:2px;
  background:var(--volt);color:#04191A;font-size:13px;font-weight:600;text-decoration:none;
  transition:top .2s var(--ease);}
.skip-link:focus{top:10px;color:#04191A;}

.site-header{position:sticky;top:0;left:0;z-index:80;}

.rail__top{display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:var(--bar-h);padding:8px var(--gutter);
  background:rgba(10,12,15,.88);border-bottom:1px solid var(--steel);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);}

.brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--silver-100);text-decoration:none;}
.brand:hover{color:var(--silver-100);}
.brand__mark{flex:none;line-height:1;padding:4px 7px;border-radius:2px;
  font-family:var(--font-mono);font-size:16px;font-weight:700;letter-spacing:.02em;
  color:#04191A;background:var(--volt);}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0;
  transition:opacity .22s var(--ease);}
.brand__name{font-size:14px;letter-spacing:.02em;white-space:nowrap;}
.brand__line{font-size:10px;letter-spacing:.14em;color:var(--silver-500);white-space:nowrap;}

.nav-toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:2px;
  background:transparent;border:1px solid var(--steel);color:var(--silver-100);cursor:pointer;
  font-size:12px;letter-spacing:.14em;transition:border-color .2s var(--ease),color .2s var(--ease);}
.nav-toggle:hover{border-color:var(--volt);color:var(--volt);}
.nav-toggle__icon{position:relative;width:16px;height:10px;flex:none;color:currentColor;}
.nav-toggle__icon::before,.nav-toggle__icon::after{content:"";position:absolute;left:0;width:100%;height:1px;
  background:currentColor;transition:transform .24s var(--ease),top .24s var(--ease);}
.nav-toggle__icon::before{top:1px;}
.nav-toggle__icon::after{top:8px;}
.site-header[data-open] .nav-toggle__icon::before{top:5px;transform:rotate(45deg);}
.site-header[data-open] .nav-toggle__icon::after{top:5px;transform:rotate(-45deg);}
.nav-toggle__text{white-space:nowrap;}

.rail__panel{position:fixed;top:var(--bar-h);left:0;bottom:0;z-index:82;
  width:min(320px,86vw);display:flex;flex-direction:column;gap:22px;
  padding:20px 0 28px;overflow-y:auto;
  background:var(--glass-strong);border-right:1px solid var(--steel);
  -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
  transform:translateX(-104%);transition:transform .34s var(--ease);}
.site-header[data-open] .rail__panel{transform:translateX(0);}

.rail__scrim{position:fixed;top:var(--bar-h);right:0;bottom:0;left:0;z-index:81;
  background:rgba(6,8,10,.62);opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);}
.site-header[data-open] .rail__scrim{opacity:1;pointer-events:auto;}

.rail__label{display:block;padding:0 22px;margin-bottom:10px;
  font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--silver-500);}
.nav-list{display:flex;flex-direction:column;}
.nav-list__item{display:block;}
.nav-link{display:flex;align-items:center;gap:14px;width:100%;padding:11px 22px;
  color:var(--silver-500);text-decoration:none;border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);}
.nav-link__idx{flex:none;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;opacity:.75;}
.nav-link__label{font-size:14px;white-space:nowrap;}
.nav-link:hover{color:var(--silver-100);background:rgba(34,224,214,.07);}
.nav-link[aria-current="page"]{color:var(--volt);border-left-color:var(--volt);
  background:linear-gradient(90deg,rgba(34,224,214,.14),rgba(34,224,214,0));}
.nav-link[aria-current="page"] .nav-link__idx{opacity:1;color:var(--volt);}

.rail__trail{display:block;}
.trail{display:flex;flex-wrap:wrap;gap:6px;padding:0 22px;}
.trail__item{display:inline-flex;}
.trail__link{display:inline-flex;align-items:center;padding:4px 9px;border-radius:2px;
  border:1px solid var(--steel);color:var(--silver-500);font-size:11px;letter-spacing:.12em;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);}
.trail__link:hover{background:var(--volt);border-color:var(--volt);color:#04191A;}

.rail__foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding:0 22px;}
.rail__cta{display:inline-flex;align-items:center;justify-content:center;padding:11px 16px;border-radius:2px;
  background:var(--volt);color:#04191A;font-size:13px;font-weight:600;letter-spacing:.04em;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);}
.rail__cta:hover{background:var(--orange);color:#1A0C04;}
.rail__icp{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--silver-500);white-space:nowrap;}

.rail__progress{position:absolute;left:0;bottom:0;z-index:83;width:100%;height:2px;pointer-events:none;
  background:linear-gradient(90deg,var(--volt),var(--violet) 70%,var(--orange));
  transform:scaleX(var(--scroll-progress));transform-origin:left center;}

/* ---------- 13b. 桌面：左侧轨道 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w);}
  .site-header{position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:90;
    background:var(--glass);border-right:1px solid var(--steel);
    -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
    transition:width .34s var(--ease);}
  .site-header:hover,.site-header:focus-within{width:var(--rail-w-open);}
  .rail{display:flex;flex-direction:column;height:100%;padding:24px 0 22px;overflow:hidden;}
  .rail__top{flex-direction:column;align-items:flex-start;gap:22px;min-height:0;padding:0 22px;
    background:transparent;border-bottom:0;-webkit-backdrop-filter:none;backdrop-filter:none;}
  .rail__panel{position:static;transform:none;width:auto;flex:1 1 auto;min-height:0;overflow:visible;
    padding:26px 0 0;background:transparent;border-right:0;
    -webkit-backdrop-filter:none;backdrop-filter:none;transition:none;}
  .rail__scrim{display:none;}
  .nav-toggle{display:none;}
  .nav-link{padding:10px 22px;}
  .brand__text,
  .rail__label,
  .nav-link__label,
  .rail__trail,
  .rail__foot{opacity:0;pointer-events:none;transition:opacity .22s var(--ease);}
  .site-header:hover .brand__text,.site-header:focus-within .brand__text,
  .site-header:hover .rail__label,.site-header:focus-within .rail__label,
  .site-header:hover .nav-link__label,.site-header:focus-within .nav-link__label,
  .site-header:hover .rail__trail,.site-header:focus-within .rail__trail,
  .site-header:hover .rail__foot,.site-header:focus-within .rail__foot{opacity:1;pointer-events:auto;}
  .rail__progress{top:0;bottom:0;left:auto;right:0;width:2px;height:auto;
    background:linear-gradient(180deg,var(--volt),var(--violet) 70%,var(--orange));
    transform:scaleY(var(--scroll-progress));transform-origin:top center;}
}

/* ==========================================================================
   14. 站点页脚
   ========================================================================== */
.site-footer{position:relative;margin-top:clamp(48px,8vw,110px);
  background:var(--graphite);border-top:1px solid var(--steel);color:var(--silver-100);}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--volt),var(--violet) 44%,var(--orange));opacity:.9;}

.footer__inner{max-width:var(--wrap-max);margin:0 auto;padding:clamp(36px,6vw,72px) var(--gutter) clamp(24px,4vw,40px);
  display:grid;gap:clamp(28px,4vw,56px);
  grid-template-columns:minmax(0,1.2fr) minmax(0,2fr) minmax(0,1.3fr);}
.footer__brand{min-width:0;}
.footer__logo{font-family:var(--font-display);text-transform:uppercase;font-size:24px;letter-spacing:.02em;color:var(--silver-100);}
.footer__tagline{margin-top:10px;max-width:34ch;font-size:14px;color:var(--silver-500);}
.footer__stamp{margin-top:14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--silver-500);}

.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.footer__col{min-width:0;}
.footer__title{margin-bottom:14px;font-size:11px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--volt);}
.footer__list{display:flex;flex-direction:column;gap:10px;}
.footer__link{font-size:14px;color:var(--silver-500);}
.footer__link:hover{color:var(--silver-100);}

.footer__contact{min-width:0;}
.footer__list--contact{gap:14px;}
.footer__contact-line{display:flex;flex-direction:column;gap:2px;}
.footer__contact-label{font-size:11px;letter-spacing:.14em;color:var(--silver-500);}
.footer__contact-value{font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;
  color:var(--silver-100);word-break:break-all;}
.footer__note{margin-top:14px;font-size:12px;line-height:1.7;color:var(--silver-500);}

.footer__bar{max-width:var(--wrap-max);margin:0 auto;padding:18px var(--gutter) 28px;
  border-top:1px solid var(--steel);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;}
.footer__legal{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--silver-500);}
.footer__note--bar{margin-top:0;}

@media (max-width:900px){
  .footer__inner{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:560px){
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 15. 无障碍与降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;}
  html.has-js [data-reveal]{opacity:1;transform:none;}
  .rail__progress{transition:none;}
}