/* ============================================================
   必一体育中国官网 — /assets/site.css
   深夜赛场边的战术板：深靛蓝底 · 荧光青数据 · 暖橙行动
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,picture,video,canvas,svg{display:block;max-width:100%;}
img{height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
address{font-style:normal;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 2. 变量 ---------- */
:root{
  --bg:#0A0F24;
  --panel:#101A3A;
  --ink:#050814;
  --blue:#3D6BFF;
  --cyan:#35E8D0;
  --orange:#FF8A3D;
  --green:#65F28B;
  --white:#EAF0FF;
  --muted:#8792B8;
  --violet:#6C4DFF;

  --line:rgba(135,146,184,.20);
  --line-2:rgba(135,146,184,.36);
  --cyan-soft:rgba(53,232,208,.12);
  --orange-soft:rgba(255,138,61,.14);
  --green-soft:rgba(101,242,139,.10);
  --text-soft:#C7D0EE;

  --f-display:'Barlow Condensed','Oswald','Noto Sans SC','HarmonyOS Sans SC',sans-serif;
  --f-body:'Noto Sans SC','HarmonyOS Sans SC','PingFang SC',sans-serif;
  --f-mono:'IBM Plex Mono','Roboto Mono','SFMono-Regular',monospace;

  --rail:236px;
  --topbar:62px;
  --maxw:1440px;
  --gutter:24px;
  --r:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.75;
  color:var(--white);
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 620px at 84% -6%, rgba(61,107,255,.20), transparent 62%),
    radial-gradient(760px 540px at 2% 14%, rgba(108,77,255,.14), transparent 68%),
    radial-gradient(620px 420px at 60% 96%, rgba(53,232,208,.07), transparent 70%);
  background-repeat:no-repeat;
  padding-left:var(--rail);
  padding-top:var(--topbar);
  min-height:100vh;
  letter-spacing:.01em;
  text-rendering:optimizeLegibility;
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px;}
::selection{background:rgba(53,232,208,.28);color:#fff;}

#main-content{display:block;min-height:60vh;}

/* ---------- 4. 布局容器 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.stack{display:flex;flex-direction:column;gap:16px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}
.band{height:2px;width:100%;background:linear-gradient(90deg,var(--cyan),var(--blue) 42%,var(--violet) 74%,transparent);}

/* ---------- 5. 文字层级 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);}

.h1{font-family:var(--f-display);font-weight:400;font-size:clamp(34px,5.4vw,56px);line-height:1.06;letter-spacing:.01em;}
.h2{font-family:var(--f-display);font-weight:400;font-size:clamp(24px,3.2vw,34px);line-height:1.16;letter-spacing:.01em;}
.h3{font-family:var(--f-display);font-weight:500;font-size:20px;line-height:1.34;}
.lede{font-size:16px;line-height:1.8;color:var(--text-soft);max-width:62ch;}
.prose{font-size:15.5px;line-height:1.8;color:var(--text-soft);}
.prose p{margin-bottom:1.05em;}
.prose p:last-child{margin-bottom:0;}
.prose strong{color:var(--white);font-weight:600;}
.mono,.stat__value,.rail__num,.meter__label,.meter__chapter,.tag{font-family:var(--f-mono);}
.muted{color:var(--muted);}
.stat__value{font-size:clamp(28px,4vw,44px);line-height:1;color:var(--cyan);letter-spacing:-.02em;}

/* ---------- 6. 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-top:30px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);
}
.breadcrumbs a:hover{color:var(--cyan);}
.breadcrumbs__sep{opacity:.5;}

/* ---------- 7. 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border:1px solid transparent;border-radius:var(--r);
  font-family:var(--f-display);font-size:16px;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;line-height:1.2;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn--primary{background:var(--orange);color:#180A02;}
.btn--primary:hover{background:#FFA469;}
.btn--cyan{background:var(--cyan);color:#04231F;}
.btn--cyan:hover{background:#5CF2DE;}
.btn--ghost{border-color:var(--line-2);color:var(--white);}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);}

.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border:1px solid var(--line);border-radius:999px;
  font-size:12px;letter-spacing:.08em;color:var(--muted);white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.chip:hover{color:var(--white);border-color:var(--line-2);background:var(--cyan-soft);}
.chip--accent{background:var(--orange);border-color:var(--orange);color:#180A02;font-weight:600;}
.chip--accent:hover{background:#FFA469;border-color:#FFA469;color:#180A02;}
.chip--ghost{border-style:dashed;color:var(--white);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);border-radius:999px;
  font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
}
.tag--cyan{color:var(--cyan);border-color:rgba(53,232,208,.42);background:var(--cyan-soft);}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.42);background:var(--orange-soft);}
.tag--green{color:var(--green);border-color:rgba(101,242,139,.42);background:var(--green-soft);}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--cyan);
}
.link-arrow::after{content:"→";transition:transform .18s var(--ease);}
.link-arrow:hover::after{transform:translateX(4px);}

/* ---------- 8. 面板 / 网格 / 进度 ---------- */
.panel{
  position:relative;padding:24px;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(160deg,rgba(16,26,58,.92),rgba(10,15,36,.76));
}
.panel--quiet{background:rgba(16,26,58,.42);border-color:transparent;}

.grid{display:grid;gap:var(--gutter);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--sidebar{grid-template-columns:minmax(0,3fr) minmax(0,9fr);}

.progress{height:6px;background:rgba(135,146,184,.16);border-radius:999px;overflow:hidden;}
.progress__fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--green));transition:width .24s var(--ease);}

/* ---------- 9. 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(140deg,var(--panel),var(--ink));
}
.media > img{width:100%;height:100%;object-fit:cover;}
.media--16x9{aspect-ratio:16 / 9;}
.media--4x3{aspect-ratio:4 / 3;}
.media--1x1{aspect-ratio:1 / 1;}
.media--tall{aspect-ratio:3 / 4;}
.media--ph::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(135,146,184,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(135,146,184,.10) 1px,transparent 1px),
    radial-gradient(120% 90% at 22% 18%,rgba(53,232,208,.24),transparent 58%),
    radial-gradient(90% 80% at 82% 86%,rgba(255,138,61,.20),transparent 62%);
  background-size:34px 34px,34px 34px,100% 100%,100% 100%;
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 16px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--white);background:linear-gradient(0deg,rgba(5,8,20,.86),transparent);
}

/* ---------- 10. 显现 ---------- */
html.js-ready [data-reveal]{
  opacity:0;transform:translateY(10px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
html.js-ready [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 11. skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border-radius:var(--r);
  background:var(--cyan);color:#04231F;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;
  transform:translateY(-220%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:none;}

/* ---------- 12. 顶部状态条 ---------- */
.topbar{
  position:fixed;top:0;left:var(--rail);right:0;height:var(--topbar);z-index:80;
  display:flex;align-items:center;gap:14px;padding:0 24px;
  background:rgba(10,15,36,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:baseline;gap:8px;flex:0 0 auto;}
.topbar__mark{font-family:var(--f-display);font-size:20px;font-weight:500;letter-spacing:.06em;}
.topbar__sub{font-family:var(--f-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);}
.topbar__brand:hover .topbar__mark{color:var(--cyan);}
.topbar__tagline{
  flex:0 0 auto;padding-left:16px;border-left:1px solid var(--line);
  font-size:13px;color:var(--muted);white-space:nowrap;
}
.topbar__quick{display:flex;align-items:center;gap:8px;margin-left:auto;}

.meter{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.meter__label{font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);}
.meter__chapter{font-size:11px;letter-spacing:.1em;color:var(--cyan);min-width:84px;text-align:right;white-space:nowrap;}
.meter__track{display:block;width:120px;height:4px;border-radius:999px;overflow:hidden;background:rgba(135,146,184,.18);}
.meter__fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--green));transition:width .12s linear;}

.nav-toggle{
  display:none;align-items:center;gap:10px;flex:0 0 auto;
  padding:8px 14px;border:1px solid var(--line-2);border-radius:999px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--white);
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-soft);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars i{display:block;height:1px;background:currentColor;transition:transform .2s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(2.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-2.5px) rotate(-45deg);}

/* ---------- 13. 左侧轨道 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail);z-index:90;
  display:flex;flex-direction:column;gap:22px;
  padding:26px 20px 22px;
  background:linear-gradient(180deg,#0A0F24 0%,#101A3A 60%,#0A0F24 100%);
  border-right:1px solid var(--line);
  overflow-y:auto;overscroll-behavior:contain;
}
.rail__brand{display:flex;flex-direction:column;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--line);}
.rail__logo{font-family:var(--f-display);font-size:26px;font-weight:400;line-height:1.16;letter-spacing:.04em;}
.rail__logo:hover{color:var(--cyan);}
.rail__tagline{font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);}

.rail__label{
  font-family:var(--f-mono);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);margin-bottom:10px;
}
.rail__nav{display:block;}
.rail__list{display:flex;flex-direction:column;gap:2px;}
.rail__link{
  display:flex;align-items:center;gap:12px;
  padding:9px 10px;border-left:2px solid transparent;
  font-size:14px;letter-spacing:.02em;color:var(--white);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.rail__link:hover{background:rgba(135,146,184,.10);color:var(--cyan);}
.rail__link[aria-current="page"]{
  border-left-color:var(--cyan);background:var(--cyan-soft);color:var(--cyan);font-weight:600;
}
.rail__num{font-size:10px;letter-spacing:.1em;color:var(--muted);}
.rail__link[aria-current="page"] .rail__num{color:var(--cyan);}

.rail__quick{display:flex;flex-direction:column;gap:6px;padding-top:20px;border-top:1px solid var(--line);}
.rail__short{
  display:flex;align-items:center;gap:8px;
  padding:8px 10px;border:1px dashed var(--line);border-radius:var(--r);
  font-size:13px;color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.rail__short::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--orange);flex:0 0 auto;}
.rail__short:hover{color:var(--white);border-color:var(--line-2);background:var(--orange-soft);}

.rail__foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;}
.rail__status{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);animation:pulse 2.4s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(101,242,139,.5);}
  70%{box-shadow:0 0 0 9px rgba(101,242,139,0);}
  100%{box-shadow:0 0 0 0 rgba(101,242,139,0);}
}
.rail__meta{font-family:var(--f-mono);font-size:10px;letter-spacing:.1em;color:var(--muted);}

.rail-scrim{display:none;position:fixed;inset:0;z-index:85;background:rgba(5,8,20,.74);}

/* ---------- 14. 移动底部浮层 ---------- */
.dock{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:88;
  grid-template-columns:repeat(4,minmax(0,1fr));
  padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px));
  background:rgba(5,8,20,.94);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.dock__item{
  display:flex;align-items:center;justify-content:center;
  padding:10px 4px;border-radius:var(--r);
  font-size:12px;letter-spacing:.06em;color:var(--muted);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.dock__item:hover,.dock__item:focus-visible{color:var(--cyan);background:var(--cyan-soft);}
.dock__item[aria-current="page"]{color:var(--cyan);background:var(--cyan-soft);}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  margin-top:96px;
  padding:72px var(--gutter) 28px;
  background:linear-gradient(180deg,rgba(16,26,58,.55) 0%,#050814 62%);
  border-top:1px solid var(--line);
}
.footer__grid{
  width:100%;max-width:var(--maxw);margin:0 auto;
  display:grid;gap:40px 32px;
  grid-template-columns:minmax(240px,1.5fr) repeat(4,minmax(120px,1fr));
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
.footer__brand{display:flex;flex-direction:column;gap:12px;}
.footer__logo{font-family:var(--f-display);font-size:22px;font-weight:500;letter-spacing:.05em;}
.footer__tagline{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;color:var(--cyan);}
.footer__contact{display:flex;flex-direction:column;gap:6px;margin-top:4px;}
.footer__note{font-size:13px;line-height:1.7;color:var(--muted);}
.footer__col{display:flex;flex-direction:column;}
.footer__title{
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
  font-family:var(--f-mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--white);
}
.footer__title::before{content:"";width:14px;height:2px;background:var(--orange);}
.footer__list{display:flex;flex-direction:column;gap:9px;}
.footer__list a{font-size:14px;color:var(--muted);transition:color .18s var(--ease);}
.footer__list a:hover{color:var(--cyan);}
.footer__legal{
  width:100%;max-width:var(--maxw);margin:0 auto;padding-top:24px;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;
  font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);
}
.footer__icp{color:var(--cyan);}
.footer__legal-links{display:inline-flex;flex-wrap:wrap;gap:16px;}
.footer__legal-links a:hover{color:var(--cyan);}

.to-top{
  position:fixed;right:20px;bottom:20px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border:1px solid var(--line-2);border-radius:999px;
  background:rgba(16,26,58,.94);color:var(--white);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s,border-color .2s var(--ease),color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--cyan);color:var(--cyan);}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1279px){
  .topbar__tagline{display:none;}
  .meter{display:none;}
}

@media (max-width:1023px){
  body{padding-left:0;padding-bottom:calc(76px + env(safe-area-inset-bottom,0px));}
  html.is-nav-open{overflow:hidden;}

  .topbar{left:0;padding:0 16px;}
  .topbar__quick{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}

  .rail{
    width:min(84vw,320px);
    transform:translateX(-102%);
    transition:transform .24s var(--ease);
    box-shadow:24px 0 60px rgba(5,8,20,.72);
  }
  .rail[data-open]{transform:none;}
  .rail[data-open] ~ .rail-scrim{display:block;}

  .dock{display:grid;}

  .grid--2,.grid--3,.grid--sidebar{grid-template-columns:1fr;}

  .site-footer{margin-top:72px;padding:56px var(--gutter) 24px;}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;}
  .to-top{bottom:calc(80px + env(safe-area-inset-bottom,0px));}
}

@media (max-width:639px){
  :root{--gutter:16px;}
  body{font-size:15px;}
  .section{padding:64px 0;}
  .section--tight{padding:44px 0;}
  .h1{font-size:34px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__legal{flex-direction:column;align-items:flex-start;}
}

/* ---------- 17. 动效降级 ---------- */
@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.js-ready [data-reveal]{opacity:1 !important;transform:none !important;}
  .dot{animation:none;}
}