/* ============================================================
   TVT赛场 · 共享样式表 /assets/site.css
   ============================================================ */

:root{
  --bg:#0B0E14;
  --panel:#11151E;
  --hair:#232A36;
  --ink:#F2F5F7;
  --ink-2:#98A4B3;
  --brand:#00E5A0;
  --brand-deep:#00A876;
  --accent:#FF6B35;
  --mist:#0E2A24;
  --white:#FFFFFF;
  --ink-body:#D7DEE6;
  --muted:#5D6875;

  --font-head:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",Consolas,monospace;

  --wrap-w:1240px;
  --gut:clamp(18px,4vw,44px);
  --header-h:62px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-soft:0 1px 0 rgba(255,255,255,.02),0 12px 28px -22px rgba(0,0,0,.9);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 24px);
}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(1100px 560px at 10% -8%,rgba(0,229,160,.08),transparent 68%),
    radial-gradient(880px 480px at 96% 4%,rgba(255,107,53,.055),transparent 70%),
    repeating-linear-gradient(180deg,rgba(255,255,255,.018) 0 1px,transparent 1px 4px);
}
body > *{position:relative;z-index:1;}
img,picture,video,svg{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
hr{border:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-head);
  color:var(--ink);
  line-height:1.16;
  letter-spacing:-.02em;
  font-weight:700;
}
h1{font-size:clamp(38px,7vw,80px);font-weight:800;}
h2{font-size:clamp(26px,4vw,38px);}
h3{font-size:clamp(19px,2.2vw,23px);font-weight:600;letter-spacing:-.01em;}
h4{font-size:17px;font-weight:600;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
strong{font-weight:700;color:var(--white);}

.skip-link{
  position:absolute;
  left:var(--gut);
  top:-72px;
  z-index:300;
  background:var(--brand);
  color:#04150F;
  font-size:14px;
  font-weight:700;
  padding:10px 18px;
  transition:top .16s var(--ease);
}
.skip-link:focus{top:12px;}

/* ---------- 布局 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap-w);
  margin:0 auto;
  padding-left:var(--gut);
  padding-right:var(--gut);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,28px);
}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

.rule{height:1px;background:var(--hair);margin:clamp(24px,3vw,40px) 0;}
.eyebrow{
  display:inline-block;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--brand);
  margin-bottom:12px;
}
.section-head{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:end;
  gap:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--hair);
  margin-bottom:clamp(24px,3vw,40px);
}
.section-head__note{
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--ink-2);
  white-space:nowrap;
}
.prose{
  max-width:68ch;
  font-size:16.5px;
  line-height:1.78;
  color:var(--ink-body);
}
.prose p + p{margin-top:1.1em;}
.prose h2{margin-top:2.1em;margin-bottom:.55em;}
.prose h3{margin-top:1.6em;margin-bottom:.5em;}
.prose ul{margin:1em 0;display:flex;flex-direction:column;gap:.6em;}
.prose li{position:relative;padding-left:22px;}
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.74em;
  width:10px;
  height:1px;
  background:var(--brand);
}
.prose a{color:var(--brand);border-bottom:1px solid rgba(0,229,160,.35);}
.prose a:hover{border-bottom-color:var(--brand);}
.prose code{
  font-family:var(--font-num);
  font-size:.9em;
  background:var(--panel);
  border:1px solid var(--hair);
  padding:1px 6px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid var(--hair);
  background:transparent;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  cursor:pointer;
  transition:background .16s var(--ease),border-color .16s var(--ease),
             color .16s var(--ease),transform .16s var(--ease);
}
.btn:hover{border-color:var(--brand);color:var(--brand);}
.btn:active{transform:translateY(1px);}
.btn--primary{background:var(--brand);border-color:var(--brand);color:#04150F;}
.btn--primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#03110C;}
.btn--ghost{color:var(--ink-2);border-color:var(--hair);}
.btn--ghost:hover{color:var(--brand);}
.btn--sm{padding:7px 13px;font-size:13px;}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.12em;
  padding:4px 9px;
  border:1px solid var(--hair);
  color:var(--ink-2);
}
.tag--brand{color:var(--brand);border-color:rgba(0,229,160,.35);background:var(--mist);}
.tag--live{color:var(--accent);border-color:rgba(255,107,53,.42);background:rgba(255,107,53,.07);}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:20px 0 0;
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--ink-2);
}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.breadcrumb__item{display:flex;align-items:center;gap:10px;}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--muted);}
.breadcrumb__link{transition:color .16s var(--ease);}
.breadcrumb__link:hover{color:var(--brand);}
.breadcrumb__item[aria-current="page"]{color:var(--ink);}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--hair);
  aspect-ratio:16 / 10;
  box-shadow:var(--shadow-soft);
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease),opacity .2s var(--ease);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(11,14,20,.16) 0 1px,transparent 1px 3px);
  mix-blend-mode:multiply;
}
.media-frame:hover > img,
.media-frame:hover > picture > img{transform:scale(1.02);}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--bleed{border-left:0;border-right:0;}
.media-frame__tag{
  position:absolute;
  left:12px;
  bottom:12px;
  z-index:2;
  font-family:var(--font-num);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--ink);
  background:rgba(11,14,20,.78);
  border:1px solid var(--hair);
  padding:4px 9px;
}

/* ---------- 坐标索引 ---------- */
.rail{
  position:sticky;
  top:calc(var(--header-h) + 28px);
  align-self:start;
  border-left:1px solid var(--hair);
  padding-left:18px;
}
.rail__title{
  font-family:var(--font-num);
  font-size:10.5px;
  letter-spacing:.2em;
  color:var(--ink-2);
  margin-bottom:14px;
}
.rail__list{display:flex;flex-direction:column;}
.rail__item + .rail__item{margin-top:2px;}
.rail__link{
  position:relative;
  display:block;
  padding:7px 0 7px 14px;
  font-size:13.5px;
  color:var(--ink-2);
  transition:color .16s var(--ease);
}
.rail__link::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:2px;
  background:transparent;
  transition:background .16s var(--ease);
}
.rail__link:hover{color:var(--ink);}
.rail__link[aria-current]::before{background:var(--brand);}
.rail__link[aria-current]{color:var(--ink);}

/* ============================================================
   头部命令栏
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(11,14,20,.93);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hair);
}
.header-scale{
  height:4px;
  background-image:repeating-linear-gradient(90deg,var(--hair) 0 1px,transparent 1px 26px);
  opacity:.85;
}
.cmdbar{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,2vw,32px);
  height:var(--header-h);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:6px 8px;
  margin-left:-8px;
  transition:background .16s var(--ease);
}
.brand:hover{background:rgba(255,255,255,.03);}
.brand__mark{
  font-family:var(--font-num);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.14em;
  line-height:1;
  color:var(--brand);
  border:1px solid rgba(0,229,160,.35);
  background:var(--mist);
  padding:6px 7px;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-weight:800;font-size:16px;color:var(--ink);letter-spacing:.01em;}
.brand__sub{
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.18em;
  color:var(--ink-2);
}

/* 导航索引 */
.cmdbar__nav{min-width:0;}
.nav-index{
  display:flex;
  align-items:center;
  gap:2px;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-index::-webkit-scrollbar{display:none;}
.nav-index__item{flex:0 0 auto;}
.nav-index__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:9px 12px;
  color:var(--ink-2);
  font-size:14px;
  white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.nav-index__num{
  font-family:var(--font-num);
  font-size:10.5px;
  letter-spacing:.06em;
  opacity:.78;
}
.nav-index__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  background:var(--brand);
  transform:skewX(-24deg) scaleX(0);
  transform-origin:left center;
  transition:transform .18s var(--ease);
}
.nav-index__link:hover{color:var(--ink);background:rgba(255,255,255,.03);}
.nav-index__link:hover::after{transform:skewX(-24deg) scaleX(1);}
.nav-index__link[aria-current="page"]{color:var(--ink);background:var(--mist);}
.nav-index__link[aria-current="page"]::after{transform:skewX(-24deg) scaleX(1);}
.nav-index__link[aria-current="page"] .nav-index__num{color:var(--accent);opacity:1;}

/* 右侧元信息 */
.cmdbar__meta{
  display:flex;
  align-items:center;
  gap:12px;
}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.05em;
  color:var(--ink-2);
  border:1px solid var(--hair);
  padding:6px 10px;
  white-space:nowrap;
}
.status-dot{
  width:7px;
  height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 3px rgba(0,229,160,.14);
}
.cmdbar__cta{white-space:nowrap;}

/* 移动开关 */
.nav-toggle{
  display:none;
  width:42px;
  height:36px;
  border:1px solid var(--hair);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
  transition:border-color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);}
.nav-toggle__bar{
  display:block;
  width:16px;
  height:1.5px;
  background:var(--ink);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

/* 滚动进度 */
.cmdbar__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:transparent;
  overflow:hidden;
}
.cmdbar__progress span{
  display:block;
  height:100%;
  width:var(--progress,0%);
  background:linear-gradient(90deg,var(--brand-deep),var(--brand));
  transition:width .12s linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:clamp(56px,9vw,112px);
  border-top:1px solid var(--hair);
  background:linear-gradient(180deg,rgba(17,21,30,0),rgba(17,21,30,.72));
}
.footer__top{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:clamp(24px,3vw,56px);
  padding:clamp(40px,6vw,72px) 0 0;
}
.footer__brandmark{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(22px,2.6vw,30px);
  letter-spacing:-.01em;
  color:var(--ink);
}
.footer__brandmark .num{
  font-size:.5em;
  letter-spacing:.18em;
  color:var(--brand);
  vertical-align:super;
}
.footer__tagline{
  margin-top:12px;
  max-width:34ch;
  font-size:14.5px;
  color:var(--ink-2);
}
.footer__cta{margin-top:22px;}
.footer__grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.footer__col-title{
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--brand);
  margin-bottom:14px;
}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__link{
  position:relative;
  display:inline-block;
  font-size:14.5px;
  color:var(--ink-2);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.footer__link::before{
  content:"";
  position:absolute;
  left:-9px;
  top:.78em;
  width:6px;
  height:1px;
  background:var(--brand);
  opacity:0;
  transition:opacity .16s var(--ease);
}
.footer__link:hover{color:var(--ink);transform:translateX(7px);}
.footer__link:hover::before{opacity:1;}

.footer__contact{
  margin-top:clamp(32px,4vw,56px);
  padding-top:clamp(26px,3.4vw,40px);
  border-top:1px solid var(--hair);
}
.contact-list{
  display:flex;
  flex-wrap:wrap;
  gap:clamp(14px,2.6vw,44px);
}
.contact-list__item{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}
.contact-list__label{
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--ink-2);
}
.contact-list__value{
  font-size:14px;
  color:var(--ink);
}
.copy-btn{
  border:1px solid var(--hair);
  color:var(--ink-2);
  font-family:var(--font-num);
  font-size:11.5px;
  letter-spacing:.08em;
  padding:4px 10px;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.copy-btn:hover{color:var(--brand);border-color:var(--brand);}
.copy-btn[data-copied]{color:var(--accent);border-color:var(--accent);background:rgba(255,107,53,.08);}
.footer__note{
  margin-top:14px;
  font-size:12.5px;
  color:var(--ink-2);
  max-width:64ch;
}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 26px;
  margin-top:clamp(24px,3vw,40px);
  padding:clamp(18px,2.6vw,26px) 0;
  border-top:1px solid var(--hair);
  font-size:12.5px;
  color:var(--ink-2);
}
.legal-line--muted{color:var(--muted);}
.footer__status{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding-bottom:clamp(28px,4vw,48px);
  font-size:12.5px;
  color:var(--ink-2);
  max-width:74ch;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1180px){
  .status-pill__text{display:none;}
  .status-pill{padding:7px;}
}

@media (max-width:1080px){
  .cmdbar__cta{display:none;}
}

@media (max-width:960px){
  :root{--header-h:56px;}
  .cmdbar{
    grid-template-columns:auto auto;
    justify-content:space-between;
    gap:12px;
  }
  .nav-toggle{display:inline-flex;}
  .cmdbar__nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    background:var(--bg);
    border-bottom:1px solid var(--hair);
    padding:6px var(--gut) 18px;
    max-height:calc(100vh - var(--header-h) - 8px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-6px);
    transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
  }
  .site-header[data-open] .cmdbar__nav{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-index{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    overflow:visible;
  }
  .nav-index__item{width:100%;}
  .nav-index__link{
    width:100%;
    justify-content:flex-start;
    gap:14px;
    padding:15px 6px;
    font-size:16px;
    border-bottom:1px solid var(--hair);
  }
  .nav-index__link::after{display:none;}
  .nav-index__link[aria-current="page"]{
    background:var(--mist);
    box-shadow:inset 3px 0 0 var(--brand);
  }
  .nav-index__num{font-size:11px;letter-spacing:.16em;}

  .footer__top{grid-template-columns:minmax(0,1fr);}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:1 / -1;}
  .rail{
    position:static;
    border-left:0;
    border-top:1px solid var(--hair);
    padding-left:0;
    padding-top:16px;
  }
}

@media (max-width:600px){
  body{font-size:15.5px;}
  .brand__sub{display:none;}
  .footer__grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .contact-list{flex-direction:column;gap:14px;}
  .section-head{grid-template-columns:minmax(0,1fr);}
  .section-head__note{white-space:normal;}
  .footer__legal{flex-direction:column;align-items:flex-start;gap:6px;}
}

/* ============================================================
   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;
  }
  .cmdbar__nav{transform:none !important;}
  .footer__link:hover{transform:none;}
  .media-frame:hover > img,
  .media-frame:hover > picture > img{transform:none;}
}