/* ============================================================
   竞博体育 · 共享站点样式 /assets/site.css
   轨道式框架导航 + 数据指挥舱视觉体系
   ============================================================ */

/* ---------- 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}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}

/* ---------- tokens ---------- */
:root{
  --obsidian:#0B0D12;
  --charcoal:#14171F;
  --red:#B3122B;
  --red-deep:#6E0A1B;
  --cyan:#35E0D6;
  --orange:#FF7A29;
  --white:#F4F6FA;
  --grey:#A8B0C0;
  --green:#2FBF71;
  --navy:#101A2E;

  --rail-w:96px;
  --r-lg:32px;
  --r-md:24px;
  --r-sm:16px;
  --pill:999px;

  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC",Inter,"PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  --font-num:"JetBrains Mono","DIN Next","SFMono-Regular",ui-monospace,Consolas,monospace;

  --ease:cubic-bezier(.22,.68,.32,1);
  --hair:rgba(244,246,250,.08);
}

/* ---------- body ---------- */
body{
  padding-top:62px;
  min-height:100vh;
  background-color:var(--obsidian);
  background-image:
    radial-gradient(1200px 620px at 78% -12%,rgba(179,18,43,.22),transparent 62%),
    radial-gradient(900px 520px at 6% 108%,rgba(53,224,214,.07),transparent 60%);
  background-attachment:fixed;
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.is-nav-open{overflow:hidden}
#main-content{display:block;scroll-margin-top:80px}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.1;letter-spacing:-.01em;color:var(--white)}
p{max-width:72ch}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  display:inline-flex;align-items:center;
  padding:.6rem 1.1rem;border-radius:var(--pill);
  background:var(--cyan);color:#061417;
  font-size:13px;font-weight:800;letter-spacing:.04em;
  transform:translateY(-260%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ============================================================
   品牌轨道（移动端：顶部横条）
   ============================================================ */
.rail{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:var(--charcoal);
  border-bottom:1px solid rgba(179,18,43,.45);
}
.rail__progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:61;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transform:scaleX(var(--progress,0));
  transform-origin:left center;
  transition:transform .12s linear;
  pointer-events:none;
}

.rail__head{
  display:flex;align-items:center;gap:12px;
  height:62px;padding:0 16px;
  background:linear-gradient(100deg,var(--red),var(--red-deep) 58%,var(--charcoal));
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(11,13,18,.88);
  box-shadow:inset 0 0 0 1px rgba(53,224,214,.42);
  font-family:var(--font-display);font-weight:900;font-size:15px;
  color:var(--white);letter-spacing:0;
}
.brand__word{
  font-family:var(--font-display);font-weight:900;
  font-size:15px;letter-spacing:.02em;color:#fff;line-height:1;
}
.brand__tag{display:none}

.rail__toggle{
  display:inline-flex;align-items:center;justify-content:center;
  margin-left:auto;width:44px;height:44px;flex:0 0 auto;
  border-radius:14px;cursor:pointer;
  border:1px solid rgba(244,246,250,.26);
  background:rgba(11,13,18,.45);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.rail__toggle:hover{border-color:var(--cyan)}
.rail__bars{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--white)}
.rail__bars::before,.rail__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--white);
  transition:transform .24s var(--ease),opacity .18s var(--ease);
}
.rail__bars::before{top:-6px}
.rail__bars::after{top:6px}
.rail[data-open] .rail__bars{background:transparent}
.rail[data-open] .rail__bars::before{transform:translateY(6px) rotate(45deg)}
.rail[data-open] .rail__bars::after{transform:translateY(-6px) rotate(-45deg)}

.rail__panel{
  width:100%;max-height:0;overflow:hidden;opacity:0;visibility:hidden;
  background:rgba(11,13,18,.985);
  border-bottom:1px solid var(--hair);
  transition:max-height .30s var(--ease),opacity .2s var(--ease),visibility .30s var(--ease);
}
.rail[data-open] .rail__panel{
  max-height:min(78vh,620px);overflow-y:auto;
  opacity:1;visibility:visible;
}

.rail__nav{width:100%}
.rail__list{
  display:flex;gap:8px;overflow-x:auto;
  padding:14px 16px 12px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.rail__list li{flex:0 0 auto}

.pill{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.55rem .95rem;border-radius:var(--pill);
  border:1px solid rgba(244,246,250,.10);
  background:rgba(20,23,31,.7);
  color:rgba(244,246,250,.78);
  font-size:13px;font-weight:700;letter-spacing:.03em;line-height:1.3;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.pill:hover{color:#fff;border-color:rgba(53,224,214,.55);background:rgba(11,13,18,.9);transform:translateY(-1px)}
.pill[aria-current="page"]{
  color:#061417;
  background:linear-gradient(120deg,var(--cyan),#7CF0E8);
  border-color:transparent;
  box-shadow:0 0 0 4px rgba(53,224,214,.14);
}
.pill[aria-current="page"]:hover{color:#061417;transform:none}

.rail__meta{
  display:flex;flex-wrap:wrap;gap:8px 18px;
  padding:0 16px 12px;
}
.status{
  display:inline-flex;align-items:center;gap:6px;
  font-size:11px;letter-spacing:.05em;line-height:1.4;
  color:var(--grey);
}
.status__dot{
  width:7px;height:7px;border-radius:50%;flex:0 0 auto;
  background:var(--grey);box-shadow:0 0 0 3px rgba(168,176,192,.12);
}
.status__dot--live{background:var(--cyan);box-shadow:0 0 0 3px rgba(53,224,214,.16);animation:pulse 2.4s ease-in-out infinite}
.status__dot--online{background:var(--green);box-shadow:0 0 0 3px rgba(47,191,113,.16)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.32}}

.rail__actions{display:flex;gap:10px;padding:0 16px 18px}
.rail__actions .btn{flex:1 1 0;min-width:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  padding:.66rem 1.1rem;border-radius:var(--pill);
  border:1px solid transparent;cursor:pointer;
  font-family:var(--font-body);
  font-size:12.5px;font-weight:800;letter-spacing:.03em;line-height:1.3;
  text-align:center;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn--primary{
  background:var(--orange);color:#1A0A01;
  box-shadow:0 8px 22px -12px rgba(255,122,41,.95);
}
.btn--primary:hover{background:#FF8F4A;transform:translateY(-2px)}
.btn--ghost{
  background:rgba(11,13,18,.55);color:var(--white);
  border-color:rgba(244,246,250,.24);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* ============================================================
   桌面端：轨道转为左侧竖列
   ============================================================ */
@media (min-width:960px){
  body{padding-top:0;padding-left:var(--rail-w)}
  body.is-nav-open{overflow:auto}
  #main-content{scroll-margin-top:24px}

  .rail{
    top:0;bottom:0;right:auto;left:0;width:var(--rail-w);
    display:flex;flex-direction:column;align-items:center;
    padding:22px 10px 18px;
    background:linear-gradient(180deg,
      var(--red) 0%,
      #8C0E23 16%,
      #4A0F1C 44%,
      var(--charcoal) 74%,
      var(--obsidian) 100%);
    border-bottom:0;
    border-right:1px solid rgba(244,246,250,.07);
  }
  .rail__progress{
    top:0;left:calc(var(--rail-w) - 3px);right:auto;
    width:3px;height:100vh;
    background:linear-gradient(180deg,var(--cyan),var(--orange));
    transform:scaleY(var(--progress,0));
    transform-origin:top center;
    transition:transform .1s linear;
  }

  .rail__head{
    flex-direction:column;gap:10px;
    height:auto;width:100%;padding:0;background:none;
  }
  .brand{flex-direction:column;gap:9px}
  .brand__mark{width:44px;height:44px;border-radius:14px;font-size:18px}
  .brand__word{
    writing-mode:vertical-rl;
    font-size:12px;letter-spacing:.3em;line-height:1;
  }
  .brand__tag{
    display:inline-flex;align-items:center;justify-content:center;
    max-width:82px;padding:3px 8px;text-align:center;
    border:1px solid rgba(244,246,250,.28);border-radius:var(--pill);
    font-family:var(--font-num);font-size:9.5px;letter-spacing:.09em;line-height:1.3;
    color:rgba(244,246,250,.78);
  }
  .rail__toggle{display:none}

  .rail__panel{
    display:flex;flex-direction:column;align-items:center;flex:1;min-height:0;
    width:100%;margin-top:26px;
    max-height:none;overflow:visible;opacity:1;visibility:visible;
    background:none;border:0;
  }
  .rail__list{
    flex-direction:column;gap:6px;width:100%;
    overflow:visible;padding:0;
  }
  .rail__list li{flex:0 0 auto;width:100%}
  .pill{
    width:100%;padding:.56rem .3rem;
    font-size:12.5px;letter-spacing:.04em;line-height:1.35;
    white-space:normal;word-break:break-word;
  }
  .pill:hover{transform:translateX(3px)}
  .pill[aria-current="page"]:hover{transform:none}

  .rail__meta{
    margin-top:auto;flex-direction:column;align-items:center;flex-wrap:nowrap;
    gap:9px;padding:0 0 14px;text-align:center;
  }
  .status{justify-content:center;text-align:center;font-size:10.5px;letter-spacing:.04em;line-height:1.4}

  .rail__actions{flex-direction:column;gap:8px;width:100%;padding:0}
  .rail__actions .btn{flex:none;width:100%;padding:.6rem .35rem;font-size:11.5px;letter-spacing:.01em;line-height:1.35}
}
@media (min-width:1280px){
  :root{--rail-w:112px}
  .pill{font-size:13px}
  .brand__mark{width:48px;height:48px}
}

/* ============================================================
   正文容器 / 章节 / 栅格
   ============================================================ */
.wrap{
  width:100%;max-width:1360px;margin-inline:auto;
  padding-inline:clamp(18px,3.5vw,52px);
}
.section{padding-block:clamp(44px,6vw,88px)}
.section__head{
  display:flex;flex-direction:column;gap:10px;
  max-width:64ch;margin-bottom:clamp(20px,3vw,36px);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-num);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";width:24px;height:2px;border-radius:2px;flex:0 0 auto;
  background:linear-gradient(90deg,var(--red),var(--cyan));
}
.section__title{
  font-size:clamp(26px,3.4vw,40px);font-weight:900;line-height:1.1;letter-spacing:-.01em;
}
.section__lede{color:var(--grey);font-size:15px;line-height:1.8}

.grid{display:grid;gap:clamp(14px,1.8vw,22px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr))}

/* ---------- 数据卡 ---------- */
.datacard{
  display:flex;flex-direction:column;gap:6px;
  padding:18px 20px;
  border-radius:var(--r-md);
  border:1px solid var(--hair);
  background:linear-gradient(160deg,var(--navy),var(--charcoal));
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.datacard:hover{transform:translateY(-4px);border-color:rgba(53,224,214,.45)}
.datacard__label{
  font-family:var(--font-num);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--grey);
}
.datacard__value{
  font-family:var(--font-num);font-weight:700;font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,40px);line-height:1.1;letter-spacing:-.02em;
  color:var(--white);
}
.datacard__value--cyan{color:var(--cyan)}
.datacard__note{font-size:13px;line-height:1.7;color:var(--grey)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;
  aspect-ratio:16/10;
  border-radius:var(--r-lg);
  border:1px solid var(--hair);
  background:linear-gradient(145deg,var(--navy),var(--obsidian) 55%,var(--charcoal));
}
.media img{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.media--wide{aspect-ratio:21/9}
.media--portrait{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--empty::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(53,224,214,.08) 0 1px,transparent 1px 14px);
}
.media__tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  padding:4px 10px;border-radius:var(--pill);
  background:rgba(11,13,18,.74);
  border:1px solid rgba(53,224,214,.42);
  color:var(--cyan);
  font-family:var(--font-num);font-size:11px;letter-spacing:.06em;line-height:1.5;
}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.02em;
  color:var(--grey);
}
.crumbs a{transition:color .2s var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs__sep{color:rgba(168,176,192,.5)}

/* ---------- 可展开分组 ---------- */
.fold{
  border:1px solid var(--hair);
  border-left:3px solid transparent;
  border-radius:var(--r-md);
  background:rgba(16,26,46,.5);
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.fold + .fold{margin-top:10px}
.fold.is-open{border-left-color:var(--cyan);background:rgba(16,26,46,.9)}
.fold__trigger{
  display:flex;align-items:center;gap:12px;width:100%;
  padding:16px 18px;border:0;background:none;cursor:pointer;
  text-align:left;color:var(--white);
  font-family:var(--font-body);font-size:15.5px;font-weight:700;line-height:1.5;
  transition:color .2s var(--ease);
}
.fold__trigger:hover{color:var(--cyan)}
.fold__state{
  flex:0 0 auto;
  font-family:var(--font-num);font-size:10.5px;letter-spacing:.1em;
  color:var(--grey);
}
.fold__state::before{content:"展开"}
.fold.is-open .fold__state{color:var(--cyan)}
.fold.is-open .fold__state::before{content:"收起"}
.fold__trigger::after{
  content:"";margin-left:auto;flex:0 0 auto;
  width:9px;height:9px;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);
  transform:rotate(45deg) translate(-1px,-1px);
  transition:transform .22s var(--ease);
}
.fold__trigger[aria-expanded="true"]::after{transform:rotate(225deg) translate(-1px,-1px)}
.fold__panel{padding:0 18px;overflow:hidden;transition:height .22s var(--ease)}
.fold__panel[hidden]{display:none}
.fold__body{padding-bottom:18px;color:var(--grey);font-size:15px;line-height:1.85}

/* ---------- 出现动画 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateX(-14px);
  transition:opacity .34s ease-out,transform .34s ease-out;
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

.sr-only{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ============================================================
   页脚
   ============================================================ */
.foot{
  margin-top:clamp(44px,7vw,96px);
  padding-block:clamp(34px,5vw,64px) 24px;
  background:linear-gradient(180deg,var(--obsidian),var(--navy) 140%);
  border-top:1px solid rgba(179,18,43,.55);
}
.foot__grid{
  display:grid;gap:clamp(24px,3vw,40px);
  grid-template-columns:1fr;
}
@media (min-width:680px){
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1100px){
  .foot__grid{grid-template-columns:1.45fr 1fr 1.35fr 1fr}
}
.foot__col{display:flex;flex-direction:column;gap:12px;min-width:0}
.foot__brand{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(22px,2.4vw,28px);letter-spacing:.01em;line-height:1.15;
  color:var(--white);
}
.foot__lede{color:var(--grey);font-size:14px;line-height:1.75;max-width:34ch}
.foot__seal{
  align-self:flex-start;
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--pill);
  border:1px solid rgba(53,224,214,.35);
  color:var(--cyan);
  font-family:var(--font-num);font-size:11px;letter-spacing:.06em;line-height:1.6;
}
.foot__title{
  font-family:var(--font-display);font-size:12px;font-weight:900;
  letter-spacing:.16em;text-transform:uppercase;color:var(--white);line-height:1.4;
}
.foot__title::after{
  content:"";display:block;width:26px;height:2px;margin-top:8px;border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--cyan));
}
.foot__links{display:flex;flex-direction:column;gap:8px;font-size:14px;line-height:1.6;color:var(--grey)}
.foot__links a{
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.foot__links a:hover{color:var(--cyan);transform:translateX(3px)}
.foot__meta{
  display:flex;flex-direction:column;gap:8px;
  font-size:13.5px;line-height:1.7;color:var(--grey);
  font-variant-numeric:tabular-nums;
}
.foot__base{
  display:flex;flex-wrap:wrap;gap:6px 20px;justify-content:space-between;
  margin-top:clamp(28px,4vw,48px);padding-top:18px;
  border-top:1px solid rgba(179,18,43,.35);
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.02em;
  color:rgba(168,176,192,.85);
}
.foot__base p{max-width:none}

/* ---------- 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;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .status__dot--live{animation:none}
}