/* ==========================================================================
   博云赛事 · 共享站点样式 /assets/site.css
   0 重置  1 变量  2 基础排版  3 头部  4 页脚  5 通用组件  6 交互  7 响应式
   ========================================================================== */

/* 0 Reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body,h1,h2,h3,h4,h5,p,ul,ol,li,dl,dt,dd,figure,blockquote,fieldset{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}

/* 1 Variables */
:root{
  --mist:#DDE6E3;
  --paper:#F7F9F6;
  --deep:#0B2E2A;
  --indigo:#241B3A;
  --wine:#5A1F2E;
  --orange:#F2502C;
  --blue:#2F7CFF;
  --ink:#111A18;
  --green:#1F9E83;
  --edge:#95A49F;

  --line:rgba(149,164,159,.45);
  --line-strong:rgba(11,46,42,.24);
  --on-dark:rgba(247,249,246,.84);
  --on-dark-soft:rgba(247,249,246,.62);

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  --shell:1280px;
  --gutter:clamp(1rem,4vw,2.5rem);
  --radius:14px;
  --radius-sm:10px;
  --shadow-island:0 16px 36px -22px rgba(11,46,42,.6);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:7.5rem;
}

/* 2 Base */
body{
  min-height:100vh;
  background:var(--mist);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1.0625rem;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3{font-family:var(--font-display);font-weight:800;line-height:1.16;color:var(--deep);letter-spacing:.01em}
h1{font-size:clamp(2.4rem,5.4vw,4.5rem)}
h2{font-size:clamp(1.6rem,3vw,2.5rem)}
h3{font-size:1.25rem;line-height:1.35}
strong{font-weight:700;color:var(--deep)}
::selection{background:rgba(242,80,44,.26);color:var(--ink)}
#main-content{scroll-margin-top:var(--header-h)}

/* 3 Header */
.skip-link{
  position:fixed;left:1rem;top:-6rem;z-index:200;
  padding:.7rem 1.15rem;
  background:var(--indigo);color:var(--paper);
  font-weight:700;font-size:.9rem;letter-spacing:.04em;
  border-radius:0 0 10px 10px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:repeating-linear-gradient(90deg,var(--orange) 0 26px,transparent 26px 46px);
  opacity:.55;pointer-events:none;
}

.header-rail{background:var(--deep);color:var(--paper)}
.rail-inner{
  max-width:var(--shell);margin:0 auto;
  padding:.34rem var(--gutter);
  display:flex;align-items:center;gap:.6rem;
  font-size:.78rem;line-height:1.6;letter-spacing:.08em;
}
.rail-dot{
  flex:none;width:.5rem;height:.5rem;border-radius:50%;
  background:var(--green);box-shadow:0 0 0 3px rgba(31,158,131,.22);
}
.rail-note{
  flex:1 1 auto;min-width:0;
  color:var(--on-dark);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.rail-link{
  flex:none;font-weight:700;color:var(--paper);
  border-bottom:1px solid var(--orange);
  padding-bottom:1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.rail-link:hover{color:#FFD9CF;border-color:var(--paper)}

.header-shell{
  position:relative;
  max-width:var(--shell);margin:0 auto;
  padding:.62rem var(--gutter) .72rem;
  display:flex;align-items:center;
  gap:clamp(.75rem,2vw,1.75rem);
}

.brand{
  display:inline-flex;align-items:center;gap:.65rem;
  flex:none;padding:.2rem .3rem;border-radius:12px;
  transition:background .18s var(--ease);
}
.brand:hover{background:rgba(221,230,227,.9)}
.brand-mark{
  flex:none;width:2.15rem;height:2.15rem;
  display:grid;place-items:center;
  background:var(--deep);color:var(--paper);
  font-family:var(--font-display);font-weight:700;font-size:1.02rem;letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.brand-text{display:grid;gap:.05rem;min-width:0}
.brand-name{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.25rem,2vw,1.5rem);line-height:1.1;
  letter-spacing:.09em;color:var(--deep);
}
.brand-tagline{
  font-size:.75rem;line-height:1.4;letter-spacing:.04em;
  color:rgba(17,26,24,.6);white-space:nowrap;
}

.nav-capsule{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{
  display:flex;align-items:center;gap:.14rem;
  padding:.3rem;border-radius:999px;
  background:rgba(221,230,227,.92);
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.65);
  max-width:100%;
}
.nav-item{display:block;min-width:0}
.nav-link{
  display:block;padding:.48rem .82rem;border-radius:999px;
  font-size:.9rem;font-weight:600;line-height:1.3;
  color:#1B2B28;white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-link:hover{background:rgba(247,249,246,.95);color:var(--deep)}
.nav-link[aria-current="page"]{
  background:var(--deep);color:var(--paper);
  box-shadow:0 8px 18px -12px rgba(11,46,42,.9);
}
.nav-link[aria-current="page"]:hover{background:var(--deep);color:var(--paper)}

.header-actions{display:flex;align-items:center;gap:.5rem;flex:none}

.nav-toggle{
  display:none;width:2.85rem;height:2.85rem;
  place-items:center;padding:0;
  border:1px solid var(--line-strong);border-radius:12px;
  background:var(--paper);
  transition:background .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(221,230,227,.9)}
.nav-toggle-bars{
  position:relative;display:block;width:18px;height:2px;
  background:var(--deep);border-radius:2px;
  transition:background .2s var(--ease);
}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:inherit;border-radius:2px;
  transition:transform .2s var(--ease),top .2s var(--ease);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:0;transform:rotate(45deg);background:var(--deep)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:0;transform:rotate(-45deg);background:var(--deep)}

/* 4 Footer */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,6rem);
  background:var(--deep);color:var(--paper);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(115deg,rgba(242,80,44,.09) 0 1px,transparent 1px 62px),
    radial-gradient(circle at 84% -12%,rgba(47,124,255,.24),transparent 54%);
}
.footer-track{
  height:4px;
  background:linear-gradient(90deg,var(--orange) 0 11%,var(--blue) 11% 19%,var(--green) 19% 25%,rgba(247,249,246,.16) 25% 100%);
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--shell);margin:0 auto;
  padding:clamp(2.25rem,5vw,3.75rem) var(--gutter) clamp(1.75rem,3vw,2.5rem);
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.72fr) minmax(0,.72fr) minmax(0,1.15fr);
  gap:clamp(1.5rem,3vw,3rem);
  align-items:start;
}
.footer-brand{display:grid;gap:.35rem;align-content:start}
.footer-brand-link{
  justify-self:start;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.08;
  letter-spacing:.09em;color:var(--paper);
  border-bottom:2px solid transparent;
  transition:border-color .18s var(--ease)
}
.footer-brand-link:hover{border-bottom-color:var(--orange)}
.footer-domain{
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.08em;
  color:var(--on-dark-soft);word-break:break-all;
}
.footer-tagline{
  margin-top:.55rem;max-width:24ch;
  font-family:var(--font-serif);font-size:.95rem;line-height:1.7;
  color:var(--on-dark);
}
.footer-col{display:grid;gap:.85rem;align-content:start}
.footer-col-title{
  font-family:var(--font-body);font-weight:700;
  font-size:.76rem;line-height:1.4;letter-spacing:.2em;
  color:var(--on-dark-soft);
}
.footer-links{display:grid;gap:.45rem}
.footer-link{
  display:inline-block;
  font-size:.94rem;line-height:1.6;color:var(--on-dark);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:#fff;border-bottom-color:var(--orange)}
.footer-contact{display:grid;gap:.9rem;align-content:start}
.contact-list{display:grid;gap:.85rem}
.contact-item{display:grid;gap:.12rem}
.contact-label{
  font-size:.72rem;letter-spacing:.18em;line-height:1.4;
  color:var(--on-dark-soft);
}
.contact-value{
  font-size:.92rem;line-height:1.65;color:var(--paper);
  word-break:break-word;
}
.contact-value--mono{font-family:var(--font-mono);letter-spacing:.02em}
.footer-note{
  font-size:.78rem;line-height:1.7;color:var(--on-dark-soft);
  max-width:42ch;
}
.footer-bottom{
  position:relative;z-index:1;
  background:rgba(36,27,58,.62);
  border-top:1px solid rgba(247,249,246,.16);
}
.footer-legal{
  max-width:var(--shell);margin:0 auto;
  padding:1rem var(--gutter) 1.35rem;
  display:flex;flex-wrap:wrap;align-items:center;
  gap:.4rem 1.6rem;
  font-size:.8rem;line-height:1.7;color:var(--on-dark-soft);
}
.footer-icp{font-family:var(--font-mono);letter-spacing:.04em;color:var(--on-dark)}
.footer-region{letter-spacing:.06em}
.footer-copy{margin-left:auto;letter-spacing:.04em}
.site-footer :focus-visible{outline-color:#8FB9FF}

/* 5 Common components */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.container--narrow{max-width:60rem}
.section{padding-block:clamp(2.25rem,5.5vw,4.5rem)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:.75rem 1.5rem;margin-bottom:clamp(1.25rem,2.5vw,2rem);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:var(--font-mono);font-size:.76rem;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--wine);
}
.eyebrow::before{content:"";width:1.65rem;height:2px;background:var(--orange)}
.section-title{font-size:clamp(1.8rem,3vw,3rem)}
.lede{
  max-width:54ch;
  font-family:var(--font-serif);font-size:clamp(1.02rem,1.6vw,1.28rem);
  line-height:1.75;color:#22322E;
}
.grid{display:grid;gap:clamp(1rem,2vw,1.75rem)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.split{
  display:grid;gap:clamp(1.25rem,3vw,2.75rem);
  grid-template-columns:minmax(0,.42fr) minmax(0,1fr);
  align-items:start;
}
.prose{max-width:46rem}
.prose > * + *{margin-top:1.05em}
.prose h2{margin-top:2em}
.prose h3{margin-top:1.7em}
.prose ul,.prose ol{padding-left:1.25em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.35em}
.prose a{color:var(--deep);border-bottom:1px solid var(--blue)}
.prose blockquote{
  padding-left:1.1rem;border-left:3px solid var(--orange);
  font-family:var(--font-serif);color:#22322E;
}

.panel{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(1.1rem,2.4vw,1.75rem);
}
.panel--cut{
  border-radius:0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%);
  padding-bottom:calc(clamp(1.1rem,2.4vw,1.75rem) + 12px);
}
.panel--dark{background:var(--deep);color:var(--paper);border-color:transparent}
.panel--indigo{background:var(--indigo);color:var(--paper);border-color:transparent}
.panel--wine{background:var(--wine);color:var(--paper);border-color:transparent}
.panel--dark h2,.panel--dark h3,.panel--indigo h2,.panel--indigo h3,.panel--wine h2,.panel--wine h3{color:var(--paper)}
.panel--dark p,.panel--indigo p,.panel--wine p{color:var(--on-dark)}
.panel--dark .stat-value,.panel--indigo .stat-value,.panel--wine .stat-value{color:var(--paper)}

.band{
  position:relative;overflow:hidden;
  background:var(--deep);color:var(--paper);
  padding-block:clamp(1.5rem,3.5vw,2.75rem);
}
.band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(242,80,44,.16) 0 1px,transparent 1px 46px);
}
.band > *{position:relative;z-index:1}
.band--wine{background:var(--wine)}
.band--indigo{background:var(--indigo)}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.stat{display:grid;gap:.2rem}
.stat-value{
  font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.4rem);
  font-weight:600;line-height:1.05;color:var(--deep);
}
.stat-label{font-size:.8rem;letter-spacing:.12em;color:rgba(17,26,24,.62)}
.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.18rem .62rem;border-radius:999px;
  font-size:.74rem;font-weight:700;letter-spacing:.08em;
  color:var(--wine);border:1px solid currentColor;
}
.tag--data{color:#0F6B58;background:rgba(31,158,131,.12);border-color:transparent}

.table-wrap{
  overflow-x:auto;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
}
.data-table{width:100%;min-width:520px;font-size:.94rem}
.data-table caption{
  caption-side:top;text-align:left;
  padding:.8rem 1rem;font-size:.8rem;letter-spacing:.1em;
  color:rgba(17,26,24,.62);
}
.data-table th,.data-table td{
  padding:.72rem 1rem;text-align:left;vertical-align:top;
  border-bottom:1px solid rgba(149,164,159,.32);
}
.data-table thead th{
  background:rgba(221,230,227,.75);
  font-size:.78rem;font-weight:700;letter-spacing:.1em;color:var(--deep);
}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

.media-frame{
  position:relative;overflow:hidden;
  background:var(--deep);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.ratio-16x9{aspect-ratio:16/9}
.ratio-4x3{aspect-ratio:4/3}
.ratio-1x1{aspect-ratio:1/1}
.media-caption{margin-top:.55rem;font-size:.8rem;line-height:1.6;color:rgba(17,26,24,.64)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.45rem;
  padding:.62rem 1.15rem;
  border:1px solid transparent;
  border-radius:var(--radius-sm) var(--radius-sm) 0 var(--radius-sm);
  font-size:.92rem;font-weight:700;line-height:1.25;letter-spacing:.03em;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--accent{background:var(--orange);color:#fff}
.btn--accent:hover{background:#D8411F}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--deep)}
.btn--ghost:hover{background:rgba(11,46,42,.07)}

.breadcrumb{
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.05em;
  color:rgba(17,26,24,.62);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem}
.breadcrumb li{display:flex;align-items:center;gap:.45rem}
.breadcrumb li:not(:last-child)::after{content:"›";color:var(--edge)}
.breadcrumb a{color:var(--deep);border-bottom:1px solid rgba(11,46,42,.28)}

/* 6 Interaction */
.tabs{display:grid;gap:1rem}
.tab-list{
  display:flex;flex-wrap:wrap;gap:.35rem;
  padding:.3rem;
  background:rgba(221,230,227,.9);
  border:1px solid var(--line);
  border-radius:12px;
}
.tab{
  padding:.55rem 1rem;border-radius:8px;
  border:1px solid transparent;
  font-size:.9rem;font-weight:700;letter-spacing:.02em;color:#1B2B28;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.tab:hover{background:rgba(247,249,246,.95)}
.tab[aria-selected="true"]{background:var(--deep);color:var(--paper)}
.tab-panel{padding-block:.25rem}
.tab-panel[hidden]{display:none}

html.has-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
html.has-js [data-reveal].is-revealed{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover{transform:none}
  html.has-js [data-reveal]{opacity:1;transform:none;transition:none}
}

/* 7 Responsive */
@media (max-width:1120px){
  .nav-link{padding:.46rem .62rem;font-size:.86rem}
  .brand-tagline{display:none}
}
@media (max-width:1000px){
  .footer-inner{grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr) minmax(0,1fr)}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:960px){
  .header-shell{flex-wrap:nowrap;gap:.6rem}
  .header-actions{margin-left:auto}
  .nav-toggle{display:grid}
  .nav-capsule{
    position:absolute;left:var(--gutter);right:var(--gutter);
    top:calc(100% + 8px);
    display:none;flex-direction:column;justify-content:flex-start;
    padding:.5rem;
    background:var(--paper);
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-island);
    max-height:min(70vh,30rem);
    overflow-y:auto;
    z-index:5;
  }
  .nav-capsule[data-open]{display:flex}
  .nav-list{
    flex-direction:column;align-items:stretch;width:100%;
    padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;
  }
  .nav-link{padding:.72rem .85rem;border-radius:10px;font-size:.98rem;white-space:normal}
  .nav-link[aria-current="page"]{box-shadow:none}
  .split{grid-template-columns:1fr}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .header-actions .btn{display:none}
  .rail-note{font-size:.72rem;letter-spacing:.04em}
  .grid--2,.grid--3{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr;gap:1.75rem}
  .footer-copy{margin-left:0;width:100%}
  .section-head{align-items:flex-start}
  .data-table{min-width:460px}
}