/* V体育赛场 — 共享站点样式 /assets/site.css */
:root{
  --ink-deep:#0A1730;
  --panel:#112A4D;
  --panel-deep:#08142A;
  --blue:#2F6BFF;
  --blue-light:#6C9BFF;
  --white:#F4F7FB;
  --mist:#A9B8CC;
  --orange:#FF8A1F;
  --red:#E14B3E;
  --green:#2FA36B;
  --yellow:#F3C64E;
  --glow:#FFD9A0;
  --line:rgba(169,184,204,.26);
  --line-strong:rgba(169,184,204,.55);
  --shell:1280px;
  --measure:68ch;
  --gutter:clamp(18px,4vw,48px);
  --header-h:78px;
  --radius:14px;
  --radius-sm:8px;
  --font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"Cascadia Mono","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--white);
  background:
    radial-gradient(1100px 560px at 82% -8%,rgba(255,138,31,.11),transparent 62%),
    radial-gradient(900px 520px at 6% 2%,rgba(47,107,255,.16),transparent 58%),
    var(--ink-deep);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,dl,dd,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{max-width:100%}
a{color:var(--blue-light);text-decoration:none}
a:hover{color:var(--white)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--yellow);outline-offset:3px}
::selection{background:var(--orange);color:#1A0E00}
.container{width:min(var(--shell),calc(100% - var(--gutter) * 2));margin-inline:auto}
.section{padding-block:clamp(28px,4.5vw,56px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--yellow);font-weight:700;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);display:block}
.coord{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--mist)}
.display{
  font-family:var(--font-display);font-weight:900;letter-spacing:-.04em;
  line-height:.95;color:var(--white);font-size:clamp(2rem,6vw,4.5rem);
}
.lead{font-size:clamp(1rem,1.4vw,1.15rem);line-height:1.75;color:var(--mist);max-width:46ch}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.02em}
.rule{border:0;border-top:1px solid var(--line);margin:0}
.prose{max-width:var(--measure);font-size:17px;line-height:1.78;color:#DCE5F1}
.prose p + p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;letter-spacing:-.02em;line-height:1.25}
.prose ul,.prose ol{list-style:disc;padding-left:1.25em;margin:.8em 0}
.prose li{margin:.3em 0}
.panel{
  background:linear-gradient(160deg,rgba(17,42,77,.94),rgba(10,23,48,.94));
  border:1px solid var(--line);border-radius:var(--radius);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 20px;border:1px solid transparent;border-radius:999px;
  font-size:14px;font-weight:700;letter-spacing:.02em;line-height:1.2;
  cursor:pointer;transition:background-color .2s,color .2s,border-color .2s,transform .2s;
}
.btn--primary{background:var(--orange);color:#1A0E00}
.btn--primary:hover{background:var(--glow);color:#1A0E00;transform:translateY(-1px)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--white)}
.btn--ghost:hover{border-color:var(--orange);color:var(--glow)}
.btn--small{min-height:36px;padding:7px 14px;font-size:13px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border-radius:999px;border:1px solid currentColor;
  font-size:11px;font-weight:700;letter-spacing:.08em;line-height:1.5;white-space:nowrap;
}
.tag--orange{color:var(--orange)}
.tag--red{color:var(--red)}
.tag--green{color:var(--green)}
.tag--yellow{color:var(--yellow)}
.breadcrumb{font-size:12px;color:var(--mist)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:var(--line-strong)}
.breadcrumb a{color:var(--blue-light)}
.breadcrumb a:hover{color:var(--white)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(14px,2vw,26px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}
.media-frame{
  position:relative;overflow:hidden;display:block;
  aspect-ratio:16 / 9;border:1px solid var(--line);border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 72% 0%,rgba(255,138,31,.24),transparent 56%),
    linear-gradient(135deg,#112A4D 0%,#0A1730 68%);
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(10,23,48,0) 46%,rgba(10,23,48,.72) 100%);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-caption{
  margin-top:8px;font-size:11px;line-height:1.6;letter-spacing:.04em;color:var(--mist);
}
.toc{position:sticky;top:calc(var(--header-h) + 24px)}
.toc-title{
  font-size:11px;letter-spacing:.18em;color:var(--yellow);
  font-weight:700;margin-bottom:10px;
}
.toc-list{display:grid;gap:2px}
.toc-link{
  display:block;padding:7px 0 7px 14px;border-left:1px solid var(--line);
  font-size:13px;line-height:1.5;color:var(--mist);
  transition:color .2s,border-color .2s;
}
.toc-link:hover{color:var(--white)}
.toc-link.is-current{color:var(--orange);border-left-color:var(--orange)}
.site-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:90;
  display:inline-flex;align-items:center;justify-content:center;
  min-height:42px;padding:8px 16px;border-radius:999px;
  border:1px solid var(--line-strong);background:rgba(17,42,77,.94);color:var(--white);
  font-size:12px;font-weight:700;letter-spacing:.08em;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,visibility .25s,transform .25s,border-color .2s;
}
.site-top:hover{border-color:var(--orange);color:var(--glow)}
.site-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.skip-link{
  position:fixed;left:16px;top:12px;z-index:200;
  padding:10px 16px;border-radius:var(--radius-sm);
  background:var(--yellow);color:#171000;font-size:14px;font-weight:700;
  transform:translateY(-180%);transition:transform .2s;
}
.skip-link:focus{transform:none;color:#171000}
/* Header */
.site-header{
  position:sticky;top:0;z-index:80;
  color:var(--white);
  background:linear-gradient(180deg,rgba(10,23,48,.9) 0%,rgba(10,23,48,.52) 68%,rgba(10,23,48,.06) 100%);
  transition:background-color .3s,box-shadow .3s,border-color .3s;
}
.site-header[data-scrolled="true"]{
  background:rgba(17,42,77,.97);
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.32);
}
.flag-rail{
  position:absolute;left:0;right:0;top:0;height:3px;
  display:flex;overflow:hidden;pointer-events:none;
  animation:flagDrift 16s ease-in-out infinite alternate;
}
.flag-seg{flex:1;height:100%;display:block}
.flag-seg--blue{background:var(--blue)}
.flag-seg--white{background:var(--white)}
.flag-seg--red{background:var(--red)}
.flag-seg--green{background:var(--green)}
.flag-seg--yellow{background:var(--yellow)}
@keyframes flagDrift{from{transform:translateX(-6px)}to{transform:translateX(6px)}}
.header-inner{
  position:relative;
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--white);flex:0 0 auto}
.brand:hover{color:var(--white)}
.brand-mark{
  position:relative;flex:0 0 auto;
  width:36px;height:36px;border-radius:10px 3px 10px 3px;
  background:linear-gradient(145deg,var(--blue),#1B4BC4);
  transform:rotate(-3deg);
  box-shadow:0 0 0 1px rgba(244,247,251,.22) inset;
}
.brand-mark i{
  position:absolute;left:10px;top:9px;width:15px;height:15px;
  border-left:3px solid var(--white);border-bottom:3px solid var(--white);
  transform:rotate(-45deg);
}
.brand-text{display:grid;gap:2px;min-width:0}
.brand-name{
  font-family:var(--font-display);font-size:19px;font-weight:900;
  letter-spacing:-.03em;line-height:1.1;white-space:nowrap;
}
.brand-tag{
  font-style:normal;font-size:10px;letter-spacing:.16em;
  color:var(--mist);line-height:1.3;white-space:nowrap;
}
.nav-toggle{
  display:none;align-items:center;gap:8px;margin-left:auto;
  min-height:38px;padding:7px 12px;border-radius:999px;
  border:1px solid var(--line-strong);background:transparent;
  color:var(--white);font-size:12px;font-weight:700;letter-spacing:.1em;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--orange)}
.nav-toggle-icon{display:grid;gap:4px;width:18px}
.nav-toggle-icon i{display:block;height:2px;background:currentColor;transition:transform .2s,opacity .2s}
.site-header[data-open="true"] .nav-toggle-icon i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-icon i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-icon i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.site-nav{display:flex;align-items:center;gap:clamp(10px,1.6vw,22px);margin-left:auto}
.nav-list{display:flex;align-items:center;gap:clamp(12px,1.8vw,26px)}
.nav-item{display:block}
.nav-link{
  position:relative;display:inline-block;padding:10px 2px;
  color:var(--white);font-size:15px;line-height:1.4;letter-spacing:.02em;
  transition:color .2s;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .2s;
}
.nav-link:hover{color:var(--glow)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--glow)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.legacy-link{
  flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  min-height:34px;padding:6px 13px;border-radius:999px;
  border:1px solid var(--red);color:#FFD7D2;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  transition:background-color .2s,color .2s;
}
.legacy-link:hover{background:var(--red);color:var(--white)}
.header-progress{
  position:absolute;left:0;bottom:0;width:100%;height:2px;display:block;
  background:linear-gradient(90deg,var(--orange),var(--yellow));
  transform:scaleX(var(--progress,0));transform-origin:left;
  transition:transform .1s linear;
}
/* Footer */
.site-footer{
  margin-top:clamp(56px,9vw,110px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#08142A 0%,#060F1F 100%);
  color:var(--white);
}
.footer-inner{
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding-block:clamp(34px,5vw,62px);
  display:grid;grid-template-columns:minmax(240px,.9fr) minmax(0,2fr);
  gap:clamp(26px,4vw,60px);
}
.footer-brand{display:grid;align-content:start;gap:16px}
.footer-brand .brand-name{font-size:21px}
.footer-note{
  max-width:24em;padding-left:12px;
  border-left:2px solid var(--orange);
  font-size:13px;line-height:1.7;color:var(--mist);
}
.footer-contact{border-top:1px solid var(--line);padding-top:16px}
.contact-list{display:grid;gap:11px}
.contact-list div{display:grid;grid-template-columns:64px minmax(0,1fr);gap:10px;align-items:start}
.contact-list dt{font-size:11px;letter-spacing:.12em;color:var(--mist);line-height:1.7}
.contact-list dd{font-size:13px;line-height:1.7;color:var(--white);word-break:break-word}
.footer-map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,34px)}
.map-cluster{min-width:0}
.map-title{
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--white);
}
.map-index{font-family:var(--font-mono);font-size:11px;color:var(--yellow);letter-spacing:.06em}
.map-list{display:grid;gap:10px}
.map-list a{
  display:inline-block;font-size:14px;line-height:1.6;color:var(--mist);
  border-bottom:1px solid transparent;transition:color .2s,border-color .2s;
}
.map-list a:hover{color:var(--white);border-bottom-color:var(--orange)}
.footer-base{border-top:1px solid var(--line)}
.footer-base-inner{
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;padding-block:18px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;font-size:12px;color:var(--mist);
}
.footer-copy,.footer-icp{letter-spacing:.04em}
.footer-icp{font-family:var(--font-mono);font-size:11px;color:var(--mist)}
.legal-links{display:flex;flex-wrap:wrap;gap:16px}
.legal-links a{color:var(--mist);font-size:12px;border-bottom:1px solid transparent}
.legal-links a:hover{color:var(--white);border-bottom-color:var(--line-strong)}
@media (max-width:1100px){
  .nav-list{gap:14px}
  .nav-link{font-size:14px}
  .span-3{grid-column:span 6}
}
@media (max-width:960px){
  :root{--header-h:64px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:grid;gap:0;margin-left:0;
    padding:12px 18px 18px;
    background:rgba(14,33,64,.98);
    border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:0 22px 50px rgba(0,0,0,.42);
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .25s,transform .25s,visibility .25s;
  }
  .site-header[data-open="true"] .site-nav{
    opacity:1;visibility:visible;transform:none;pointer-events:auto;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{display:block;padding:13px 4px;font-size:16px}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    color:var(--orange);padding-left:12px;
    box-shadow:inset 2px 0 0 var(--orange);
  }
  .legacy-link{margin-top:14px;min-height:40px}
  .footer-inner{grid-template-columns:1fr}
  .brand-tag{font-size:9.5px}
}
@media (max-width:720px){
  body{font-size:16px}
  .footer-map{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-4,.span-6,.span-8{grid-column:span 12}
  .grid-12{gap:14px}
  .footer-base-inner{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:560px){
  .brand-mark{width:32px;height:32px}
  .brand-mark i{left:9px;top:8px;width:13px;height:13px}
  .brand-name{font-size:17px}
  .brand-tag{display:none}
  .footer-map{grid-template-columns:1fr;gap:22px}
  .contact-list div{grid-template-columns:1fr;gap:2px}
  .nav-toggle-text{display: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;
  }
  .flag-rail{animation:none}
}