/* ============================================================
   博电竞主站 · /assets/site.css
   共享外壳：侧边轨道导航 / 顶部检索舱 / 编辑部式页脚 / 通用组件
   ============================================================ */

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

:root{
  --ink-900:#070B12;
  --ink-800:#0C1220;
  --ink-700:#151E2E;
  --line:#2A3547;
  --paper:#F2EAD9;
  --paper-2:#D8CDBA;
  --cyan:#22D3EE;
  --magenta:#F0248C;
  --amber:#F5B942;
  --mint:#7DF9C4;
  --rose:#FB4E6D;

  --rail-w:268px;
  --topbar-h:76px;
  --gutter:clamp(16px,4vw,56px);
  --max-w:1560px;

  --font-display:"Oswald","Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",SFMono-Regular,Consolas,"Courier New",monospace;
}

/* ---------- 2. Base Canvas ---------- */
body{
  padding-left:var(--rail-w);
  padding-top:var(--topbar-h);
  min-height:100vh;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 80% -12%,rgba(34,211,238,.10),transparent 62%),
    radial-gradient(880px 520px at 4% 108%,rgba(240,36,140,.09),transparent 62%),
    linear-gradient(to right,rgba(42,53,71,.26) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,53,71,.26) 1px,transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:rgba(34,211,238,.3);color:var(--paper)}

/* ---------- 3. Skip link ---------- */
.skip-link{
  position:fixed;left:14px;top:-70px;z-index:220;
  padding:10px 18px;background:var(--cyan);color:#04121A;
  font-family:var(--font-display);letter-spacing:.12em;font-size:14px;
  transition:top .18s ease;
}
.skip-link:focus{top:14px}

/* ---------- 4. Header shell ---------- */
.site-header{display:block}

/* ---- 4.1 侧边轨道 ---- */
.rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:70;
  display:flex;flex-direction:column;gap:16px;
  padding:22px 18px 20px;
  overflow-y:auto;
  background:linear-gradient(180deg,#0C1220 0%,#070B12 100%);
  border-right:1px solid var(--line);
}
.rail__brand{padding-bottom:14px;border-bottom:1px solid var(--line)}

.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand__glyph{
  flex:0 0 auto;width:42px;height:42px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--paper);
  background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(240,36,140,.16));
  font-family:var(--font-display);font-size:20px;line-height:1;
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand__name{font-family:var(--font-display);font-size:17px;letter-spacing:.06em;color:var(--paper);white-space:nowrap}
.brand__sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;color:rgba(34,211,238,.8)}
.brand--footer .brand__glyph{width:50px;height:50px;font-size:23px}
.brand--footer .brand__name{font-size:19px}

.rail-nav{display:flex;flex-direction:column;gap:10px}
.rail-nav__eyebrow{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  color:rgba(216,205,186,.55);
}
.rail-nav__list{display:flex;flex-direction:column}
.rail-nav__link{
  position:relative;display:grid;grid-template-columns:34px 1fr;align-items:center;gap:8px;
  padding:11px 10px 11px 13px;
  border-left:2px solid transparent;
  border-bottom:1px solid rgba(42,53,71,.6);
  color:var(--paper-2);
  font-family:var(--font-display);font-size:16px;letter-spacing:.05em;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.rail-nav__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:rgba(34,211,238,.7)}
.rail-nav__label{white-space:nowrap}
.rail-nav__link:hover{color:var(--paper);background:rgba(34,211,238,.07);border-left-color:rgba(34,211,238,.55)}
.rail-nav__link:hover .rail-nav__num{color:var(--cyan)}
.rail-nav__link[aria-current="page"]{
  color:var(--paper);
  border-left-color:var(--cyan);
  background:linear-gradient(90deg,rgba(34,211,238,.18),rgba(34,211,238,0) 88%);
}
.rail-nav__link[aria-current="page"] .rail-nav__num{color:var(--magenta)}
.rail-nav__link:focus-visible{outline-offset:-2px}

.rail__meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:9px;font-size:12.5px;color:rgba(216,205,186,.72);
}
.rail__now{display:flex;flex-direction:column;gap:2px}
.rail__now-label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;color:rgba(216,205,186,.5)}
.rail__now-value{font-family:var(--font-mono);font-size:13px;color:var(--cyan)}
.rail__status{display:flex;align-items:center;gap:8px;color:var(--paper-2)}
.rail__meta-line{font-size:12px;color:rgba(216,205,186,.6)}
.rail__cta{
  display:block;margin-top:4px;padding:11px 12px;text-align:center;
  border:1px solid rgba(240,36,140,.6);background:rgba(240,36,140,.12);color:#FFD8EE;
  font-family:var(--font-display);font-size:14px;letter-spacing:.1em;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.rail__cta:hover{background:var(--magenta);border-color:var(--magenta);color:#16040E}

.dot{width:7px;height:7px;flex:0 0 auto;display:inline-block;border-radius:50%;background:var(--paper-2)}
.dot--live{background:var(--mint);box-shadow:0 0 0 4px rgba(125,249,196,.14);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(125,249,196,.10)}
  50%{box-shadow:0 0 0 6px rgba(125,249,196,.20)}
}

.rail-scrim{position:fixed;inset:0;z-index:65;background:rgba(3,6,12,.7)}

/* ---- 4.2 顶部检索舱 ---- */
.topbar{
  position:fixed;top:0;left:var(--rail-w);right:0;height:var(--topbar-h);z-index:60;
  display:flex;align-items:center;
  padding:0 clamp(14px,2.4vw,32px);
  background:rgba(7,11,18,.93);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.topbar__inner{
  width:100%;max-width:var(--max-w);margin:0 auto;
  display:flex;align-items:center;gap:14px;
}
.topbar__quick{display:flex;align-items:center;gap:10px;margin-left:auto}

.searchbox{
  position:relative;flex:1 1 auto;max-width:600px;height:44px;
  display:flex;align-items:center;
  background:var(--ink-700);border:1px solid var(--line);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.searchbox:focus-within{border-color:var(--cyan);box-shadow:0 0 0 1px rgba(34,211,238,.4),0 0 24px rgba(34,211,238,.12)}
.searchbox__label{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.searchbox__input{
  flex:1 1 auto;min-width:0;height:100%;padding:0 14px;
  background:transparent;border:0;outline:0;color:var(--paper);font-size:14.5px;
}
.searchbox__input::placeholder{color:rgba(216,205,186,.5)}
.searchbox__input::-webkit-search-cancel-button{filter:invert(.7)}
.searchbox__submit{
  height:100%;padding:0 18px;border-left:1px solid var(--line);
  background:rgba(34,211,238,.12);color:var(--cyan);
  font-family:var(--font-display);font-size:13px;letter-spacing:.16em;
  transition:background .18s ease,color .18s ease;
}
.searchbox__submit:hover{background:var(--cyan);color:#04121A}

.search-panel{
  position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:8;
  padding:12px 14px;
  background:#0F1726;border:1px solid var(--line);
  box-shadow:0 20px 44px rgba(0,0,0,.6);
}
.search-panel__status{font-size:13px;color:var(--paper-2);margin-bottom:8px}
.search-panel__links{display:flex;flex-wrap:wrap;gap:14px;font-family:var(--font-mono);font-size:12px}
.search-panel__links a{color:var(--cyan);border-bottom:1px solid rgba(34,211,238,.45);padding-bottom:1px}
.search-panel__links a:hover{color:var(--paper);border-color:var(--paper)}

.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(42,53,71,.65)}
.progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--magenta))}

/* ---- 4.3 移动抽屉按钮 ---- */
.nav-toggle{
  display:none;align-items:center;gap:9px;height:44px;padding:0 14px;
  border:1px solid var(--line);color:var(--paper-2);
  font-family:var(--font-display);font-size:13px;letter-spacing:.14em;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{color:var(--paper);border-color:var(--cyan)}
.nav-toggle__bars{position:relative;width:16px;height:10px;display:inline-block}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor;
  transition:transform .2s ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan);background:rgba(34,211,238,.08)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border:1px solid transparent;
  font-family:var(--font-display);font-size:13.5px;letter-spacing:.14em;white-space:nowrap;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04121A}
.btn--primary:hover{background:var(--mint);border-color:var(--mint)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--paper-2)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(34,211,238,.08)}
.btn--magenta{background:rgba(240,36,140,.14);border-color:rgba(240,36,140,.6);color:#FFD8EE}
.btn--magenta:hover{background:var(--magenta);border-color:var(--magenta);color:#16040E}
.btn--sm{height:32px;padding:0 12px;font-size:12px;letter-spacing:.1em}

/* ---------- 6. Footer ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0C1220 0%,#070B12 100%);
}
.footer__grid{
  max-width:var(--max-w);margin:0 auto;
  padding:clamp(36px,5vw,64px) var(--gutter) clamp(24px,3vw,40px);
  display:grid;gap:clamp(24px,3vw,48px);
  grid-template-columns:1.5fr 1fr 1.1fr 1.4fr;
}
.footer__col{display:flex;flex-direction:column;gap:16px;min-width:0}
.footer__col--brand{gap:18px}
.footer__lede{font-size:14px;color:rgba(216,205,186,.78);max-width:38ch}
.footer__status{display:flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--mint)}
.footer__title{
  padding-bottom:10px;border-bottom:1px solid var(--line);
  font-family:var(--font-display);font-size:13px;letter-spacing:.22em;color:var(--cyan);
}
.footer__list{display:flex;flex-direction:column}
.footer__list a{
  display:block;padding:7px 0;color:var(--paper-2);font-size:14px;
  transition:color .18s ease,padding-left .18s ease;
}
.footer__list a::before{content:"—";margin-right:10px;color:var(--line);transition:color .18s ease}
.footer__list a:hover{color:var(--cyan);padding-left:4px}
.footer__list a:hover::before{color:var(--magenta)}
.footer__list--plain li{
  padding:8px 0;border-bottom:1px dashed rgba(42,53,71,.8);
  font-size:13.5px;color:rgba(216,205,186,.78);
}
.footer__list--contact li{
  display:flex;flex-direction:column;gap:4px;padding:11px 0;
  border-bottom:1px solid rgba(42,53,71,.7);
  font-size:13.5px;color:rgba(216,205,186,.82);
}
.footer__key{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;color:rgba(216,205,186,.5)}
.mono{font-family:var(--font-mono);letter-spacing:.02em;color:var(--paper)}
.copy-btn{
  align-self:flex-start;margin-top:4px;padding:3px 10px;
  border:1px solid rgba(34,211,238,.45);color:var(--cyan);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  transition:background .18s ease,color .18s ease;
}
.copy-btn:hover{background:var(--cyan);color:#04121A}
.copy-btn.is-done{background:var(--mint);border-color:var(--mint);color:#04121A}

.footer__bar{
  max-width:var(--max-w);margin:0 auto;
  padding:18px var(--gutter) 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px;
  font-size:12.5px;color:rgba(216,205,186,.62);
}
.footer__copy{font-family:var(--font-mono);letter-spacing:.06em}
.footer__copy [data-year]{color:var(--cyan)}
.footer__legal{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-left:auto}
.footer__legal a{color:var(--paper-2);transition:color .18s ease}
.footer__legal a:hover{color:var(--cyan)}
.footer__legal span{color:var(--line)}
.footer__icp{font-family:var(--font-mono);letter-spacing:.06em}

/* ---------- 7. 通用页面组件 ---------- */
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--gutter)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.divider{height:1px;background:var(--line);border:0;margin:0}

.eyebrow{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.26em;
  color:var(--cyan);text-transform:uppercase;
}
.lead{font-size:clamp(15px,1.6vw,18px);color:var(--paper-2);max-width:64ch}

.section{
  padding:clamp(40px,6vw,88px) 0;
  border-top:1px solid var(--line);
  transition:border-color .3s ease;
}
.section.is-active{border-top-color:rgba(34,211,238,.55)}
.section.is-active .eyebrow{color:var(--magenta)}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:18px;margin-bottom:clamp(20px,3vw,36px);
}
.section__title{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(28px,4vw,44px);line-height:1.06;letter-spacing:-.01em;color:var(--paper);
}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  padding:18px 0;font-family:var(--font-mono);font-size:12px;color:rgba(216,205,186,.7);
}
.breadcrumb a{color:var(--paper-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--line)}
.breadcrumb [aria-current="page"]{color:var(--cyan)}

.grid{display:grid;gap:clamp(12px,1.6vw,20px)}
.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))}

.bento{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.bento__cell{
  display:flex;flex-direction:column;gap:12px;min-width:0;
  padding:clamp(18px,2.2vw,28px);
  background:var(--ink-900);
  transition:background .2s ease;
}
.bento__cell:hover{background:#0A101C}

.panel{
  border:1px solid var(--line);background:var(--ink-800);
  padding:clamp(16px,2vw,26px);
}
.panel--blue{background:var(--ink-700)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;border:1px solid currentColor;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--paper-2);
}
.tag--cyan{color:var(--cyan)}
.tag--magenta{color:var(--magenta)}
.tag--amber{color:var(--amber)}
.tag--mint{color:var(--mint)}
.tag--rose{color:var(--rose)}

.data-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.data-row{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:16px;align-items:center;
  padding:14px 6px;border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.data-row:hover{background:rgba(34,211,238,.05)}
.data-row__time{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;color:var(--amber)}
.data-row__title{font-size:15.5px;color:var(--paper)}
.data-row__meta{font-family:var(--font-mono);font-size:12px;color:rgba(216,205,186,.7)}

.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  border:1px solid var(--line);
  background:linear-gradient(135deg,#101A2B 0%,#070B12 62%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.96) contrast(1.06)}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--paper-2);
  background:linear-gradient(180deg,rgba(7,11,18,0),rgba(7,11,18,.92));
}

.prose{max-width:74ch;font-size:16px;line-height:1.8;color:var(--paper-2)}
.prose h2{font-family:var(--font-display);font-size:clamp(22px,2.6vw,30px);color:var(--paper);margin:34px 0 12px;letter-spacing:-.005em}
.prose h3{font-family:var(--font-display);font-size:19px;color:var(--paper);margin:26px 0 10px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px}
.prose li{position:relative;padding-left:20px;margin-bottom:8px}
.prose li::before{content:"—";position:absolute;left:0;color:var(--cyan)}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(34,211,238,.4)}
.prose a:hover{color:var(--paper);border-color:var(--paper)}

.fold{border:1px solid var(--line);background:var(--ink-800);margin-bottom:-1px}
.fold>summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;cursor:pointer;
  font-family:var(--font-display);font-size:16px;letter-spacing:.03em;color:var(--paper);
  transition:background .18s ease;
}
.fold>summary::-webkit-details-marker{display:none}
.fold>summary::after{content:"+";font-family:var(--font-mono);color:var(--cyan)}
.fold[open]>summary{background:rgba(34,211,238,.05);border-bottom:1px solid var(--line)}
.fold[open]>summary::after{content:"–";color:var(--magenta)}
.fold__body{padding:16px 18px;font-size:15px;color:var(--paper-2)}

.stat{display:flex;flex-direction:column;gap:4px}
.stat__value{font-family:var(--font-mono);font-size:clamp(26px,3vw,40px);line-height:1.1;color:var(--cyan)}
.stat__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.18em;color:rgba(216,205,186,.6)}

.is-filtered{display:none!important}

/* ---------- 8. Responsive ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--rail-w:224px}
}

@media (max-width:1279px){
  .footer__grid{grid-template-columns:1.4fr 1fr 1.2fr}
  .footer__col--contact{grid-column:1/-1}
  .footer__list--contact{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px}
}

@media (max-width:1180px){
  .topbar__quick .btn--ghost{display:none}
}

@media (max-width:1023px){
  :root{--topbar-h:112px}
  body{
    padding-left:0;
    padding-top:var(--topbar-h);
    background-attachment:scroll;
  }
  body.nav-open{overflow:hidden}

  .rail{
    width:min(330px,88vw);
    transform:translateX(-104%);
    z-index:80;
    box-shadow:0 0 70px rgba(0,0,0,.65);
    transition:transform .28s cubic-bezier(.4,0,.2,1);
  }
  .rail[data-open="true"]{transform:translateX(0)}

  .topbar{left:0;padding:0 14px}
  .topbar__inner{flex-wrap:wrap;gap:10px;align-content:center;height:100%}
  .searchbox{order:1;flex:1 1 100%;max-width:none;height:44px}
  .topbar__quick{order:2;margin-left:0;flex:1 1 auto;display:flex;gap:8px}
  .topbar__quick .btn--ghost{display:inline-flex}
  .nav-toggle{order:3;display:inline-flex;height:40px}
  .btn{height:38px;padding:0 14px;font-size:12.5px}
  .search-panel{left:-1px;right:-1px}

  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer__col--contact{grid-column:1/-1}
  .footer__list--contact{grid-template-columns:1fr}
  .footer__bar{flex-direction:column;align-items:flex-start;gap:10px}
  .footer__legal{margin-left:0}
}

@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .data-row{grid-template-columns:74px minmax(0,1fr);gap:12px}
  .data-row__meta{grid-column:2;font-size:11.5px}
  .footer__grid{grid-template-columns:1fr}
  .brand__name{font-size:16px}
  .section__title{font-size:26px}
}

/* ---------- 9. Motion preference ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .dot--live{box-shadow:0 0 0 3px rgba(125,249,196,.16)}
}