/* ==========================================================================
   天博体育 · 共享样式表 /assets/site.css
   暗夜赛场数据台：深空蓝基底 + 荧光青结构线 + 暖橙行动点
   ========================================================================== */

/* ---------- 1. 令牌 ---------- */
:root{
  --ink-900:#060B18;
  --ink-800:#0D1730;
  --ink-700:#1B2A4A;
  --cyan:#22E0D6;
  --cyan-deep:#0B8F8B;
  --orange:#FF7A2F;
  --orange-soft:#FFB27A;
  --grass:#4FA97A;
  --text:#E9F0FA;
  --text-soft:#D5DFEE;
  --muted:#93A6C0;
  --radius-xl:32px;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shell:1240px;
  --gutter:24px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --shadow-panel:0 26px 60px -34px rgba(0,0,0,.95);
  --shadow-drawer:-30px 0 70px -40px rgba(0,0,0,.95);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
::selection{background:var(--cyan);color:var(--ink-900)}

/* ---------- 3. 基础排版 ---------- */
body{
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(34,224,214,.10), transparent 68%),
    radial-gradient(900px 520px at -6% 26%, rgba(255,122,47,.07), transparent 66%),
    radial-gradient(760px 420px at 50% 118%, rgba(11,143,139,.12), transparent 70%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{line-height:1.25;font-weight:700}
p{overflow-wrap:break-word}

/* ---------- 4. 布局骨架 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(64px,9vw,124px)}
.section--tight{padding-block:clamp(40px,5vw,72px)}
.section--wide{padding-block:clamp(88px,12vw,160px)}
.grid{display:grid;gap:clamp(20px,2.4vw,32px)}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--8-4{grid-template-columns:8fr 4fr}
.grid--4-8{grid-template-columns:4fr 8fr}
.grid--thirds{grid-template-columns:repeat(3,1fr)}
.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}

/* ---------- 5. 文本层级 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);line-height:1.5;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:0 0 22px}
.display{font-family:var(--serif);font-weight:800;letter-spacing:-.02em;line-height:1.16;color:var(--text)}
.display--xl{font-size:clamp(2.4rem,6vw,4.4rem)}
.display--lg{font-size:clamp(1.7rem,3.6vw,2.6rem)}
.display--md{font-size:clamp(1.3rem,2.2vw,1.6rem);font-weight:700}
.metric{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-weight:700;letter-spacing:-.01em;color:var(--cyan);line-height:1.05;
}
.metric--xl{font-size:clamp(2.8rem,7.5vw,5rem)}
.metric--lg{font-size:clamp(1.8rem,3.6vw,2.6rem)}
.metric--sm{font-size:16px}
.note{color:var(--muted);font-size:15px;line-height:1.8}
.note--wide{max-width:64ch}

/* ---------- 6. 面板 ---------- */
.panel{
  position:relative;
  background:var(--ink-800);
  border:1px solid var(--ink-700);
  border-radius:var(--radius-lg);
  padding:clamp(20px,2.6vw,30px);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.panel--raised{box-shadow:var(--shadow-panel)}
.panel--quiet{background:transparent;border-color:rgba(27,42,74,.7)}
.panel--accent{border-color:rgba(34,224,214,.5);background:
  linear-gradient(160deg,rgba(34,224,214,.08),rgba(13,23,48,.9) 55%)}
.panel:hover{border-color:var(--cyan-deep);transform:translateY(-4px)}
.panel:focus-within{border-color:var(--cyan)}

/* ---------- 7. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--orange);color:#160803}
.btn--primary:hover{background:var(--orange-soft)}
.btn--ghost{border-color:var(--ink-700);color:var(--text);background:var(--ink-800)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{padding:8px 4px;color:var(--orange-soft);border-radius:var(--radius-sm)}
.btn--quiet:hover{color:var(--orange)}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:12.5px;letter-spacing:.06em;
  border:1px solid var(--ink-700);color:var(--muted);background:var(--ink-800);
}
.tag--cyan{border-color:rgba(34,224,214,.45);color:var(--cyan);background:rgba(34,224,214,.08)}
.tag--orange{border-color:rgba(255,122,47,.45);color:var(--orange-soft);background:rgba(255,122,47,.08)}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.08em;line-height:1.4;
}
.pill--version{border:1px solid rgba(34,224,214,.42);background:rgba(34,224,214,.09);color:var(--cyan);font-family:var(--mono)}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs{font-size:13px;color:var(--muted)}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:9px}
.breadcrumbs li{display:inline-flex;align-items:center;gap:9px}
.breadcrumbs li+li::before{content:"/";color:var(--ink-700)}
.breadcrumbs a{color:var(--muted);transition:color .2s ease}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--text)}

/* ---------- 9. 长文 ---------- */
.prose{max-width:70ch;font-size:17px;line-height:1.85;color:var(--text-soft)}
.prose > * + *{margin-top:1.05em}
.prose h2{font-family:var(--serif);font-size:clamp(1.4rem,2.6vw,1.9rem);color:var(--text);margin-top:2.1em;letter-spacing:-.01em}
.prose h3{font-size:1.15rem;color:var(--text);margin-top:1.7em}
.prose a{color:var(--orange-soft);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--orange)}
.prose strong{color:var(--text)}
.prose ul,.prose ol{padding-left:1.3em;list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.45em}
.prose li::marker{color:var(--cyan)}
.prose blockquote{
  border-left:2px solid var(--cyan-deep);
  padding:4px 0 4px 20px;color:var(--muted);font-style:normal;
}
.prose code{font-family:var(--mono);font-size:.92em;color:var(--cyan)}

/* ---------- 10. 图片容器 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--ink-700);
  background:
    linear-gradient(140deg,rgba(34,224,214,.10),rgba(6,11,24,0) 55%),
    linear-gradient(320deg,rgba(255,122,47,.10),rgba(13,23,48,.9) 60%),
    var(--ink-800);
  isolation:isolate;
}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media__scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,24,0) 42%,rgba(6,11,24,.86));z-index:1}
.media__tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(6,11,24,.78);border:1px solid rgba(34,224,214,.4);
  color:var(--cyan);font-family:var(--mono);font-size:12px;
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
.media--ultrawide{aspect-ratio:21/9}
@media (max-width:640px){
  .media--ultrawide{aspect-ratio:16/9}
  .media--3x4{aspect-ratio:4/5}
}

/* ---------- 11. 标签页 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:14px;margin-bottom:20px;border-bottom:1px solid var(--ink-700)}
.tab{
  padding:9px 20px;border-radius:var(--radius-pill);
  border:1px solid var(--ink-700);background:var(--ink-800);
  color:var(--muted);font-size:14px;letter-spacing:.04em;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.tab:hover{color:var(--text);border-color:var(--cyan-deep)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:#03201F}
.tab-panel[hidden]{display:none}
.tab-panel{animation:fade-in .22s ease both}
@keyframes fade-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 12. 锚点索引栏 ---------- */
.index-rail{position:sticky;top:104px;display:flex;flex-direction:column;gap:4px}
.index-rail a{
  display:flex;align-items:baseline;gap:10px;
  padding:9px 12px;border-radius:var(--radius-sm);
  font-size:14px;color:var(--muted);
  border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.index-rail a:hover{color:var(--text);background:rgba(34,224,214,.07)}
.index-rail a[aria-current="true"]{color:var(--cyan);border-left-color:var(--cyan);background:rgba(34,224,214,.08)}

/* ---------- 13. 显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 14. 页头 ---------- */
.skip-link{
  position:absolute;left:16px;top:10px;z-index:130;
  padding:10px 20px;border-radius:var(--radius-pill);
  background:var(--orange);color:#160803;font-size:14px;font-weight:600;
  transform:translateY(-180%);
  transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(6,11,24,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--ink-700);
}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.scroll-progress__bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
}

/* 上层品牌条 */
.brandbar{
  max-height:96px;overflow:hidden;
  border-bottom:1px solid rgba(27,42,74,.75);
  transition:max-height .35s ease,opacity .3s ease;
}
.brandbar__inner{display:flex;align-items:center;gap:18px;padding-block:15px}
.brandbar__brand{display:inline-flex;align-items:center;gap:11px;color:var(--text)}
.brandbar__glyph{
  position:relative;flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  border:1px solid var(--cyan-deep);
  background:radial-gradient(circle at 32% 28%,rgba(34,224,214,.38),rgba(34,224,214,0) 64%);
}
.brandbar__glyph::after{
  content:"";position:absolute;inset:5px;border-radius:50%;
  border:2px solid transparent;border-top-color:var(--cyan);border-right-color:var(--orange);
  transform:rotate(-25deg);
}
.brandbar__name{font-family:var(--serif);font-weight:800;font-size:21px;letter-spacing:.04em;line-height:1}
.brandbar__domain{
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
  padding-left:18px;border-left:1px solid var(--ink-700);line-height:1.6;
}
.brandbar__meta{margin-left:auto;display:flex;align-items:center;gap:10px}
.brandbar__search{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--ink-700);background:var(--ink-800);
  color:var(--muted);font-size:13px;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.brandbar__search::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);flex:0 0 6px}
.brandbar__search:hover{color:var(--text);border-color:var(--cyan);background:rgba(34,224,214,.08)}

/* 移动端开关 */
.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--ink-700);background:var(--ink-800);color:var(--cyan);
}
.nav-toggle__label{font-size:13px;letter-spacing:.1em;color:var(--text)}
.nav-toggle__glyph{position:relative;display:inline-block;width:18px;height:2px;border-radius:2px;background:currentColor;transition:background .2s ease}
.nav-toggle__glyph::before,.nav-toggle__glyph::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;
  transition:transform .25s ease,top .25s ease;
}
.nav-toggle__glyph::before{top:-6px}
.nav-toggle__glyph::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__glyph::after{top:0;transform:rotate(-45deg)}

/* 下层栏目层 */
.navlayer__inner{display:flex;align-items:center;gap:18px}
.nav{width:100%}
.nav__list{display:flex;flex-wrap:wrap;align-items:stretch;gap:4px;counter-reset:nav}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:9px;
  padding:15px 16px;border-radius:12px 12px 0 0;
  font-size:15px;color:var(--muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link::before{
  counter-increment:nav;content:counter(nav,decimal-leading-zero);
  font-family:var(--mono);font-size:11px;color:var(--cyan-deep);
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .25s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--text);background:rgba(34,224,214,.07)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--text)}
.nav-link[aria-current="page"]::before{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.nav__meta{display:none}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,rgba(13,23,48,.35),rgba(6,11,24,.98) 42%);
  border-top:1px solid var(--ink-700);
  color:var(--text);
}
.site-footer::before{
  content:"";position:absolute;left:10%;right:10%;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.55;
}
.footer__top{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;padding-block:52px 28px;border-bottom:1px solid var(--ink-700);
}
.footer__brand-link{font-family:var(--serif);font-weight:800;font-size:26px;letter-spacing:.03em;color:var(--text)}
.footer__brand-link:hover{color:var(--cyan)}
.footer__tagline{margin-top:8px;font-size:14px;color:var(--muted)}
.footer__meta{font-family:var(--mono);font-size:13px;color:var(--cyan-deep);letter-spacing:.04em}
.footer__grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(22px,3vw,40px);padding-block:40px 36px;
}
.footer__col-title{
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.footer__col-title::before{content:"";width:14px;height:1px;background:currentColor;flex:0 0 14px}
.footer__list{display:flex;flex-direction:column;gap:10px}
.footer__link{
  display:inline-block;font-size:15px;color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer__link:hover{color:var(--text);border-bottom-color:var(--orange)}
.footer__item{display:flex;align-items:baseline;gap:9px;font-size:15px;color:var(--text-soft)}
.footer__index{font-family:var(--mono);font-size:11px;color:var(--cyan-deep)}
.footer__more{display:inline-block;margin-top:14px;font-size:13px;color:var(--orange-soft)}
.footer__more:hover{color:var(--orange)}
.footer__channels{display:flex;flex-direction:column;gap:12px}
.footer__channel{display:flex;flex-direction:column;gap:3px}
.footer__channel-label{font-size:12px;letter-spacing:.08em;color:var(--muted)}
.footer__channel-value{font-size:14.5px;color:var(--text-soft);line-height:1.7;overflow-wrap:anywhere}
.footer__channel:nth-child(2) .footer__channel-value{font-family:var(--mono);letter-spacing:.03em}
.footer__hint{margin-top:14px;font-size:12.5px;line-height:1.7;color:var(--cyan-deep)}
.footer__base{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-block:20px 38px;border-top:1px solid var(--ink-700);
}
.footer__status{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12.5px;color:var(--muted);
}
.footer__status::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);flex:0 0 7px;
  box-shadow:0 0 0 4px rgba(34,224,214,.16);
}
.footer__copy{font-size:12.5px;color:var(--muted);font-family:var(--mono);letter-spacing:.03em}

/* ---------- 16. 断点 ---------- */
@media (max-width:1080px){
  .grid--7-5,.grid--8-4,.grid--4-8{grid-template-columns:1fr}
  .grid--thirds{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1000px){
  .site-header[data-compact] .brandbar{max-height:0;opacity:0;border-color:transparent}
  .site-header[data-compact] .brandbar__inner{padding-block:0}
}
@media (max-width:999px){
  :root{--gutter:20px}
  body{font-size:16.5px}
  .brandbar__domain,.brandbar__meta{display:none}
  .nav-toggle{display:inline-flex}
  .navlayer__inner{padding-inline:0}
  .nav{
    position:fixed;top:0;right:0;z-index:70;
    width:min(88vw,360px);height:100vh;height:100dvh;
    padding:98px var(--gutter) 40px;overflow-y:auto;
    background:var(--ink-800);border-left:1px solid var(--ink-700);
    box-shadow:var(--shadow-drawer);
    transform:translateX(102%);visibility:hidden;
    transition:transform .3s ease,visibility 0s linear .3s;
  }
  .nav[data-open]{transform:translateX(0);visibility:visible;transition:transform .3s ease,visibility 0s}
  html[data-nav-open]{overflow:hidden}
  .nav__list{flex-direction:column;gap:8px;counter-reset:nav}
  .nav-link{width:100%;padding:15px 18px;border-radius:var(--radius-md);border:1px solid var(--ink-700);background:var(--ink-900);font-size:16px}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{border-color:var(--cyan-deep);background:rgba(34,224,214,.08)}
  .nav__meta{
    display:flex;flex-direction:column;gap:12px;
    margin-top:28px;padding-top:22px;border-top:1px solid var(--ink-700);
  }
  .nav__meta-item{font-family:var(--mono);font-size:13px;color:var(--muted)}
  .nav__meta-item--link{color:var(--orange-soft);border-bottom:1px solid rgba(255,178,122,.4);align-self:flex-start}
  .index-rail{position:static}
}
@media (max-width:900px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .grid--thirds{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__top{padding-block:40px 24px}
  .footer__brand-link{font-size:23px}
  .footer__base{flex-direction:column;align-items:flex-start}
}

/* ---------- 17. 无障碍与降级动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
  .panel:hover,.btn:hover{transform:none}
}