/* ============================================================
   火博体育 · 共享 Site Kit
   高原夜赛转播控制台：深蓝底 / 橙红光轨 / 炽金数据 / 极细边界
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --c-ember:#FF3D14;
  --c-ember-deep:#B82407;
  --c-gold:#FFB320;
  --c-night:#081527;
  --c-panel:#112338;
  --c-ridge:#1D3A5C;
  --c-jade:#2FD2C4;
  --c-mist:#F1F5FA;
  --c-slate:#94A6BC;
  --c-ink:#04090F;

  --line:1px solid var(--c-ridge);
  --line-soft:1px solid rgba(29,58,92,.65);
  --shadow-card:0 20px 44px -30px rgba(0,0,0,.95);
  --shadow-bar:0 24px 50px -34px #000;
  --glow-ember:0 0 0 1px rgba(255,61,20,.28), 0 16px 42px -24px rgba(255,61,20,.85);

  --rail-h:34px;
  --bar-h:72px;
  --header-h:calc(var(--rail-h) + var(--bar-h));
  --shell:1360px;

  --r-sm:6px;
  --r-md:10px;
  --r-lg:16px;

  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + 18px)}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:700;line-height:1.22;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--c-gold);outline-offset:3px;border-radius:3px}
#main-content{display:block;min-height:40vh}

/* ---------- 3. 基础排版与底色 ---------- */
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-mist);
  background-color:var(--c-night);
  background-image:
    radial-gradient(1100px 620px at 84% -12%, rgba(255,61,20,.16), transparent 62%),
    radial-gradient(880px 520px at 4% 6%, rgba(47,210,196,.08), transparent 66%);
  background-repeat:no-repeat;
  padding-top:var(--header-h);
  overflow-x:hidden;
}
body.has-overlay-hero{padding-top:0}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

.display,.stat__value,.rail-num{
  font-weight:800;
  font-stretch:condensed;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}

/* ---------- 4. 区块与网格 ---------- */
.section{padding-block:clamp(40px,6vw,84px)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px 24px;margin-bottom:clamp(18px,2.6vw,32px);
}
.section__title{font-size:clamp(26px,3.4vw,32px);font-weight:700}
.section__sub{font-size:14px;color:var(--c-slate);max-width:56ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.2em;color:var(--c-ember);margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-ember)}

.grid{display:grid;gap:clamp(14px,2vw,22px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}

/* ---------- 5. 按钮 / 标签 / 链接 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid transparent;border-radius:var(--r-sm);
  font-size:14.5px;font-weight:700;letter-spacing:.04em;line-height:1.2;
  transition:transform .18s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn--primary{
  background:linear-gradient(135deg,var(--c-ember),var(--c-ember-deep));
  color:#fff;box-shadow:0 14px 30px -18px rgba(255,61,20,.95);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 18px 34px -16px rgba(255,61,20,1)}
.btn--ghost{background:rgba(17,35,56,.55);border-color:var(--c-ridge);color:var(--c-mist)}
.btn--ghost:hover{border-color:rgba(255,61,20,.7);color:#fff;background:rgba(255,61,20,.12)}
.btn--sm{padding:9px 15px;font-size:13.5px}
.btn[aria-disabled="true"],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;line-height:1.5;
  border:1px solid var(--c-ridge);background:rgba(17,35,56,.6);color:var(--c-slate);
}
.tag--ember{color:#FFD8CC;border-color:rgba(255,61,20,.55);background:rgba(255,61,20,.14)}
.tag--gold{color:var(--c-gold);border-color:rgba(255,179,32,.45);background:rgba(255,179,32,.1)}
.tag--jade{color:var(--c-jade);border-color:rgba(47,210,196,.45);background:rgba(47,210,196,.1)}

/* ---------- 6. 卡片 / 数据 / 光轨 ---------- */
.card{
  position:relative;
  padding:clamp(16px,2vw,22px);
  border:var(--line);border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(17,35,56,.96),rgba(8,21,39,.96));
  box-shadow:var(--shadow-card);
}
.card--ember{
  border-color:rgba(255,61,20,.55);
  background:linear-gradient(160deg,#0E2137,#04090F 74%);
  box-shadow:var(--glow-ember);
}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.card__title{font-size:20px;font-weight:700}
.card__meta{font-size:13px;color:var(--c-slate);font-variant-numeric:tabular-nums}
.card__body{font-size:15px;color:var(--c-slate);line-height:1.75}

.stat{display:flex;flex-direction:column;gap:5px}
.stat__value{font-size:clamp(28px,4vw,44px);line-height:1;color:var(--c-mist)}
.stat__value--gold{color:var(--c-gold)}
.stat__label{font-size:12.5px;letter-spacing:.14em;color:var(--c-slate)}
.stat__delta{font-size:13px;font-weight:600}
.stat__delta.is-up{color:var(--c-jade)}
.stat__delta.is-down{color:var(--c-ember)}

.rule{
  position:relative;height:1px;border:0;margin:0;overflow:visible;
  background:linear-gradient(90deg,transparent,rgba(29,58,92,.9) 12%,rgba(29,58,92,.9) 88%,transparent);
}
.rule--flow::after{
  content:"";position:absolute;top:-1px;left:-12%;width:96px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,transparent,var(--c-ember),var(--c-gold));
  animation:railflow 12s linear infinite;
}
@keyframes railflow{from{left:-12%}to{left:104%}}

/* ---------- 7. 图片容器与纹理 ---------- */
.media-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--c-ridge);border-radius:var(--r-md);
  background:linear-gradient(150deg,#102542 0%,#081527 48%,#04090F 100%);
}
.media-frame::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 28%, rgba(241,245,250,.55), transparent),
    radial-gradient(1.4px 1.4px at 72% 16%, rgba(241,245,250,.4), transparent),
    radial-gradient(1.2px 1.2px at 44% 68%, rgba(47,210,196,.55), transparent),
    radial-gradient(1.2px 1.2px at 86% 60%, rgba(255,61,20,.6), transparent);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;mix-blend-mode:overlay;
  background:repeating-linear-gradient(180deg, rgba(255,255,255,.05) 0 1px, transparent 1px 4px);
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--ember{border-color:rgba(255,61,20,.6);box-shadow:var(--glow-ember)}
.media-frame__cap{
  position:absolute;z-index:2;left:0;right:0;bottom:0;padding:16px;
  font-size:13px;color:var(--c-mist);line-height:1.6;
  background:linear-gradient(180deg,transparent,rgba(4,9,15,.94));
}
.media-frame__tag{position:absolute;z-index:2;top:12px;left:12px}

.texture-stars{
  background-image:
    radial-gradient(1.5px 1.5px at 10% 20%, rgba(241,245,250,.35), transparent),
    radial-gradient(1.2px 1.2px at 62% 34%, rgba(255,179,32,.35), transparent),
    radial-gradient(1.2px 1.2px at 38% 78%, rgba(47,210,196,.3), transparent);
  background-size:420px 420px;background-repeat:repeat;
}
.texture-contour{
  background-image:repeating-linear-gradient(115deg, rgba(29,58,92,.4) 0 1px, transparent 1px 28px);
}

/* ---------- 8. 面包屑 / 长文 / 侧边目录 ---------- */
.breadcrumbs{font-size:13px;color:var(--c-slate)}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs__item{display:flex;align-items:center;gap:8px}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--c-ridge)}
.breadcrumbs__link{transition:color .2s ease}
.breadcrumbs__link:hover{color:var(--c-gold)}
.breadcrumbs__item[aria-current="page"]{color:var(--c-mist)}

.prose{max-width:70ch;font-size:16px;line-height:1.75;color:#D8E2EE}
.prose p + p{margin-top:14px}
.prose h2{font-size:26px;margin-top:36px;margin-bottom:12px}
.prose h3{font-size:20px;margin-top:26px;margin-bottom:10px}
.prose ul{display:grid;gap:8px;margin-top:12px}
.prose ul li{position:relative;padding-left:18px}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;border-radius:1px;background:var(--c-ember);
}
.prose a{color:var(--c-gold);border-bottom:1px solid rgba(255,179,32,.5)}
.prose a:hover{border-bottom-color:var(--c-gold)}

.toc{
  position:sticky;top:calc(var(--header-h) + 22px);
  display:grid;gap:1px;padding-left:14px;border-left:var(--line);
}
.toc__link{
  position:relative;display:block;padding:7px 0;font-size:14px;color:var(--c-slate);
  transition:color .2s ease,padding-left .2s ease;
}
.toc__link:hover{color:var(--c-mist)}
.toc__link[aria-current="true"]{color:var(--c-mist);padding-left:12px}
.toc__link[aria-current="true"]::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:16px;border-radius:2px;background:var(--c-ember);
}

/* ---------- 9. 跳过链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:120;
  padding:10px 16px;border-radius:var(--r-sm);
  background:var(--c-gold);color:var(--c-ink);font-size:14px;font-weight:700;
  transform:translateY(-220%);transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 10. 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid rgba(29,58,92,.5);
  background:linear-gradient(180deg,rgba(4,9,15,.9),rgba(8,21,39,.35));
  backdrop-filter:blur(10px) saturate(120%);
  -webkit-backdrop-filter:blur(10px) saturate(120%);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header[data-scrolled]{
  background:linear-gradient(180deg,rgba(8,21,39,.99),rgba(8,21,39,.95));
  border-bottom-color:var(--c-ridge);
  box-shadow:var(--shadow-bar);
}
.header-aurora{
  position:absolute;left:0;right:0;bottom:-1px;height:1px;opacity:0;
  background:linear-gradient(90deg,transparent,rgba(255,61,20,.8) 28%,rgba(255,179,32,.6) 56%,transparent 92%);
  transition:opacity .3s ease;
}
.site-header[data-scrolled] .header-aurora{opacity:1}

.header-rail{border-bottom:1px solid rgba(29,58,92,.5)}
.header-rail__inner{
  display:flex;align-items:center;gap:clamp(14px,2.4vw,30px);
  height:var(--rail-h);font-size:12px;letter-spacing:.08em;color:var(--c-slate);
}
.rail-item{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.rail-item--end{margin-left:auto;color:var(--c-mist);letter-spacing:.14em}
.rail-dot{
  width:6px;height:6px;border-radius:50%;background:var(--c-ember);
  box-shadow:0 0 0 3px rgba(255,61,20,.18);
  animation:dotPing 3s ease-in-out infinite;
}
@keyframes dotPing{
  0%,100%{box-shadow:0 0 0 3px rgba(255,61,20,.18)}
  50%{box-shadow:0 0 0 7px rgba(255,61,20,.05)}
}
.rail-num{color:var(--c-gold);font-size:12.5px}

.header-bar__inner{display:flex;align-items:center;gap:clamp(12px,2vw,28px);height:var(--bar-h)}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  position:relative;flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  border:1px solid rgba(29,58,92,.95);
  background:radial-gradient(circle at 30% 24%,#1D3A5C,#081527 72%);
  box-shadow:inset 0 0 18px rgba(255,61,20,.28), 0 0 0 1px rgba(255,61,20,.16);
}
.brand__mark::before{
  content:"";position:absolute;inset:10px;border-radius:2px;transform:rotate(45deg);
  background:linear-gradient(135deg,var(--c-ember),var(--c-gold));
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:17px;font-weight:800;letter-spacing:.1em;color:var(--c-mist)}
.brand__tag{font-size:10.5px;letter-spacing:.22em;color:var(--c-slate);margin-top:4px}

.site-nav{margin-left:auto;min-width:0}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 13px;border-radius:var(--r-sm);
  border:1px solid transparent;font-size:14.5px;letter-spacing:.06em;color:var(--c-slate);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.site-nav__link:hover{color:var(--c-mist);background:rgba(29,58,92,.45);border-color:rgba(29,58,92,.9)}
.site-nav__link[aria-current="page"]{
  color:var(--c-mist);background:rgba(255,61,20,.14);border-color:rgba(255,61,20,.55);
}
.site-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-ember),var(--c-gold));
}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;gap:9px;padding:9px 14px;
  border:1px solid var(--c-ridge);border-radius:var(--r-sm);
  background:rgba(17,35,56,.7);color:var(--c-mist);
  font-size:13.5px;letter-spacing:.08em;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle:hover{border-color:rgba(255,61,20,.65);background:rgba(255,61,20,.12)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px;color:currentColor}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;
  background:currentColor;transition:transform .25s ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.header-progress{height:2px;background:rgba(29,58,92,.5);overflow:hidden}
.header-progress__bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-ember),var(--c-gold));
  box-shadow:0 0 12px rgba(255,61,20,.7);
}

/* ---------- 11. 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(56px,8vw,120px);
  background:var(--c-ink);border-top:1px solid var(--c-ridge);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;opacity:.85;
  background:linear-gradient(90deg,transparent,var(--c-ember),var(--c-gold),transparent);
}
.footer-glow{
  position:absolute;left:18%;right:18%;top:-160px;height:320px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(255,61,20,.22),transparent 72%);
}
.footer__inner{position:relative;padding:clamp(40px,5vw,66px) 0 26px}
.footer__grid{
  display:grid;grid-template-columns:1.5fr repeat(3,1fr);
  gap:clamp(24px,3vw,48px);
}
.footer__name{font-size:20px;font-weight:800;letter-spacing:.1em}
.footer__line{margin-top:7px;font-size:12.5px;letter-spacing:.18em;color:var(--c-slate)}
.footer__note{margin-top:14px;max-width:32ch;font-size:14px;line-height:1.7;color:var(--c-slate)}
.footer__title{
  position:relative;margin-bottom:16px;padding-left:12px;
  font-size:13px;font-weight:600;letter-spacing:.2em;color:var(--c-mist);
}
.footer__title::before{
  content:"";position:absolute;left:0;top:.55em;width:4px;height:4px;border-radius:1px;background:var(--c-ember);
}
.footer__list{display:grid;gap:10px}
.footer__link{font-size:14px;color:var(--c-slate);transition:color .2s ease,padding-left .2s ease}
.footer__link:hover{
  color:var(--c-mist);padding-left:4px;
  text-decoration:underline;text-decoration-color:var(--c-ember);text-underline-offset:4px;
}
.footer__contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px 24px;margin-top:clamp(28px,4vw,46px);padding-top:26px;
  border-top:var(--line-soft);
}
.contact-item{font-size:13.5px;line-height:1.65;color:var(--c-mist);word-break:break-word}
.contact-item__k{display:block;margin-bottom:5px;font-size:11.5px;letter-spacing:.2em;color:var(--c-slate)}
.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 22px;
  margin-top:26px;padding-top:18px;border-top:1px solid rgba(29,58,92,.45);
}
.footer__legal-note{font-size:12.5px;color:var(--c-slate);letter-spacing:.04em}
.footer__legal-note strong{color:var(--c-ember);font-weight:600;letter-spacing:.08em}

/* ---------- 12. 动效协议 ---------- */
[data-reveal]{opacity:0;transform:translateY(8px);transition:opacity .55s ease,transform .55s ease}
[data-reveal].is-visible{opacity:1;transform:none}

@keyframes dataPulse{
  0%{color:var(--c-gold);text-shadow:0 0 20px rgba(255,179,32,.6)}
  100%{color:inherit;text-shadow:none}
}
[data-pulse].is-pulse{animation:dataPulse 1s ease-out}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1100px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .site-nav{
    position:fixed;top:var(--header-h);left:0;right:0;z-index:79;
    display:none;margin:0;padding:14px clamp(16px,4vw,40px) 20px;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
    background:rgba(4,9,15,.98);
    border-top:1px solid var(--c-ridge);border-bottom:1px solid var(--c-ridge);
    box-shadow:0 34px 60px -34px #000;
  }
  .site-nav[data-open]{display:block}
  .site-nav__list{
    flex-wrap:nowrap;gap:8px;overflow-x:auto;padding-bottom:8px;
    -webkit-overflow-scrolling:touch;scrollbar-width:thin;
  }
  .site-nav__link{
    padding:10px 16px;border-radius:999px;white-space:nowrap;
    border-color:var(--c-ridge);background:rgba(17,35,56,.65);
  }
  .site-nav__link[aria-current="page"]::after{display:none}
  .nav-toggle{display:inline-flex}
  .grid--3,.grid--split{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toc{position:static;border-left:0;padding-left:0;display:flex;flex-wrap:wrap;gap:8px}
  .toc__link{padding:8px 12px;border:1px solid var(--c-ridge);border-radius:999px}
  .toc__link[aria-current="true"]{padding-left:12px;background:rgba(255,61,20,.14);border-color:rgba(255,61,20,.55)}
  .toc__link[aria-current="true"]::before{display:none}
}
@media (max-width:900px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rail-item--hide{display:none}
}
@media (max-width:720px){
  :root{--bar-h:64px}
  .grid--2,.grid--3,.grid--4,.grid--split{grid-template-columns:1fr}
  .brand__mark{width:30px;height:30px}
  .brand__name{font-size:15.5px}
}
@media (max-width:560px){
  .rail-item--end{display:none}
  .brand__tag{display:none}
  .header-actions{gap:8px}
  .btn--sm{padding:8px 12px;font-size:13px}
  .footer__grid{grid-template-columns:1fr}
  .footer__legal{flex-direction:column;align-items:flex-start}
}

/* ---------- 14. 降低动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
  .rule--flow::after{display:none}
  html{scroll-behavior:auto}
}