/* =========================================================
   华体育网 / assets/site.css
   令牌 → 重置与底纹 → 排版 → 头部 → 页脚 → 通用组件 → 动效 → 响应式
   ========================================================= */

:root{
  --ink-900:#0C1F1A;
  --ink-800:#12302A;
  --ink-700:#1C4A3F;
  --red:#E8552F;
  --lime:#D9F24B;
  --steel:#8FA6B2;
  --paper:#E8E4D8;
  --moss:#6F7F79;
  --blue:#2C5D8F;
  --amber:#F2A03D;

  --bg:var(--ink-900);
  --bg-panel:var(--ink-800);
  --fg:var(--paper);
  --fg-dim:var(--steel);
  --fg-faint:var(--moss);
  --line:rgba(232,228,216,.13);
  --line-strong:rgba(232,228,216,.26);
  --line-red:rgba(232,85,47,.55);

  --font-sans:"PingFang SC","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --gutter:clamp(16px,4vw,44px);
  --maxw:1330px;
  --rail:88px;
  --header-h:78px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
}

/* ---------- 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,li,figure,blockquote,dl,dd{margin:0}
ul,ol{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;padding:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

body{
  background-color:var(--ink-900);
  color:var(--fg);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (min-width:721px){
  body{
    background-image:
      repeating-linear-gradient(to right,rgba(232,228,216,.03) 0 1px,transparent 1px 120px),
      repeating-linear-gradient(to bottom,rgba(232,228,216,.03) 0 1px,transparent 1px 120px);
    background-attachment:fixed;
  }
}

/* ---------- 排版基件 ---------- */
h1,h2,h3,h4{font-family:var(--font-sans);font-weight:900;line-height:1.06;letter-spacing:-.02em}
p{max-width:none}
.mono,.index,.tag,.chip,.hd-utility-link,.hd-kicker,.ft-mono,.ft-col-title,.ft-bottom,.breadcrumb li,.figure-cap,.ribbon-item{font-family:var(--font-mono)}
.index{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-faint)}
.prose{max-width:38em;font-size:17px;line-height:1.85}
.prose p + p{margin-top:1.05em}
.prose a{color:var(--lime);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-red)}
.prose a:hover{color:var(--paper)}

.layout{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:var(--gutter);top:-70px;z-index:300;
  padding:10px 18px;border-radius:2px;
  background:var(--lime);color:var(--ink-900);
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-strong);
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-stuck{box-shadow:0 1px 0 var(--line-strong),0 20px 40px -22px rgba(0,0,0,.9)}
.site-header.nav-open{border-bottom-color:transparent}

.hd-utility{background:var(--ink-800);border-bottom:1px solid var(--line)}
.hd-utility-in{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--gutter);min-height:38px;
}
.hd-kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11.5px;letter-spacing:.14em;color:var(--fg-faint);
}
.hd-dot{
  width:6px;height:6px;flex:none;border-radius:50%;
  background:var(--red);box-shadow:0 0 0 3px rgba(232,85,47,.16);
}
.hd-utility-nav{display:flex;align-items:center;gap:20px}
.hd-utility-link{
  position:relative;padding:4px 0;
  font-size:11.5px;letter-spacing:.1em;color:var(--fg-dim);
  transition:color var(--dur) var(--ease);
}
.hd-utility-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--red);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.hd-utility-link:hover{color:var(--lime)}
.hd-utility-link:hover::after{transform:scaleX(1)}

.hd-bar{background:var(--ink-900)}
.hd-bar-in{
  display:flex;align-items:stretch;justify-content:space-between;
  gap:clamp(14px,3vw,36px);min-height:var(--header-h);
}

.brand{display:flex;align-items:center;gap:12px;flex:none;padding:12px 0;transition:opacity var(--dur) var(--ease)}
.brand:hover{opacity:.85}
.brand-mark{
  width:40px;height:40px;display:grid;place-items:center;flex:none;
  background:var(--red);color:var(--ink-900);
  font-size:20px;font-weight:900;line-height:1;letter-spacing:0;border-radius:1px;
}
.brand-text{display:block}
.brand-name{display:block;font-size:21px;font-weight:900;line-height:1.05;letter-spacing:.02em}
.brand-sub{
  display:block;margin-top:4px;
  font-family:var(--font-mono);font-size:10px;line-height:1;
  letter-spacing:.2em;text-transform:uppercase;color:var(--fg-faint);
}

.site-nav{display:flex;align-items:center;gap:clamp(8px,1.8vw,22px)}
.nav-list{display:flex;align-items:stretch}
.nav-link{
  position:relative;display:flex;align-items:center;
  min-height:var(--header-h);padding:0 clamp(8px,1.1vw,14px);
  font-size:14.5px;font-weight:500;letter-spacing:.03em;
  color:var(--paper);white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:clamp(8px,1.1vw,14px);right:clamp(8px,1.1vw,14px);bottom:15px;
  height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:var(--lime)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--red)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-sans);font-size:14px;font-weight:700;
  letter-spacing:.06em;line-height:1.2;text-align:center;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-cta{background:var(--red);color:var(--ink-900);border-color:var(--red)}
.btn-cta:hover{background:var(--lime);border-color:var(--lime);color:var(--ink-900)}
.btn-cta:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.nav-cta{flex:none;margin-left:6px}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  align-self:center;margin-block:auto;
  padding:10px 14px;border:1px solid var(--line-strong);border-radius:2px;
  background:var(--ink-800);color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-text{font-weight:700}
.nav-toggle-bars{display:grid;gap:4px;width:18px}
.nav-toggle-bars i{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.hd-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.hd-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--red) 0%,var(--red) 55%,var(--lime) 100%);
  transition:width .08s linear;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink-800);
  border-top:1px solid var(--line-strong);
  padding:clamp(38px,5.5vw,68px) 0 26px;
}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:36px;
  pointer-events:none;
  background-image:repeating-linear-gradient(to bottom,var(--ink-700) 0 1px,transparent 1px 26px);
  border-right:1px solid var(--line);
  opacity:.75;
}
.ft-top{
  display:grid;
  grid-template-columns:minmax(230px,3.4fr) 7fr;
  gap:clamp(24px,4vw,60px);
  align-items:start;
}
.ft-logo{font-size:26px;font-weight:900;line-height:1.1;letter-spacing:.01em}
.ft-line{margin-top:10px;max-width:24em;font-size:14.5px;line-height:1.7;color:var(--fg-dim)}
.ft-mono{
  margin-top:14px;
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--fg-faint);
}
.ft-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,3vw,36px)}
.ft-col-title{
  padding-bottom:10px;margin-bottom:10px;
  border-bottom:1px solid var(--line);
  font-size:11px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-faint);
}
.ft-list li + li{margin-top:1px}
.ft-link{
  display:inline-block;padding:5px 0;
  font-size:15px;letter-spacing:.02em;color:var(--paper);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.ft-link:hover{color:var(--lime);transform:translateX(4px)}

.ft-contact{
  margin-top:clamp(28px,4vw,46px);
  padding-top:22px;
  border-top:1px solid var(--line);
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(196px,1fr));
  gap:16px clamp(16px,3vw,32px);
}
.ft-contact-label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--fg-faint);
}
.ft-contact-value{margin-top:4px;font-size:14.5px;line-height:1.6;color:var(--paper);word-break:break-word}

.ft-bottom{
  margin-top:26px;padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;
  gap:8px 24px;
  font-size:11.5px;letter-spacing:.08em;color:var(--fg-faint);
}
.ft-legal{color:var(--fg-dim)}
.ft-icp{color:var(--fg-faint)}
.ft-closing{max-width:58ch;line-height:1.7}

/* ---------- 通用组件 ---------- */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;font-size:11.5px;letter-spacing:.1em;color:var(--fg-faint)}
.breadcrumb li + li::before{content:"/";margin-right:8px;color:var(--ink-700)}
.breadcrumb a{color:var(--fg-dim);transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--lime)}

.grid{display:grid;gap:clamp(16px,2vw,28px)}
.grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}

.panel{
  position:relative;
  padding:clamp(16px,2vw,26px);
  background:var(--bg-panel);
  border:1px solid var(--line);
  border-radius:2px;
}
.panel--paper{
  background:var(--paper);color:var(--ink-900);
  border-color:rgba(12,31,26,.2);
  box-shadow:4px 4px 0 0 rgba(12,31,26,.6);
}

.figure{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--line-strong);border-radius:2px;
  background:var(--ink-800);
}
.figure img{width:100%;height:100%;object-fit:cover;filter:saturate(.55) contrast(1.06) brightness(.92)}
.figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,rgba(232,228,216,.07) 0 1px,transparent 1px 44px),
    repeating-linear-gradient(to bottom,rgba(232,228,216,.07) 0 1px,transparent 1px 44px);
}
.figure-tag{
  position:absolute;left:10px;bottom:10px;z-index:1;
  padding:3px 8px;border:1px solid var(--line-strong);
  background:var(--ink-900);color:var(--lime);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
}
.figure-cap{margin-top:8px;font-size:11.5px;letter-spacing:.06em;color:var(--fg-faint)}
.ratio-16x9{aspect-ratio:16/9}
.ratio-4x3{aspect-ratio:4/3}
.ratio-1x1{aspect-ratio:1/1}
.ratio-3x4{aspect-ratio:3/4}

.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border:1px solid var(--line-strong);border-radius:999px;
  background:transparent;color:var(--fg-dim);
  font-size:11.5px;letter-spacing:.1em;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.chip:hover{border-color:var(--line-red);color:var(--paper)}
.chip[aria-pressed="true"],.chip.is-active{
  border-color:var(--red);color:var(--paper);background:rgba(232,85,47,.14);
}
.chip[aria-pressed="true"]::after,.chip.is-active::after{
  content:"";width:5px;height:5px;flex:none;border-radius:50%;background:var(--lime);
}

.tag{
  display:inline-block;padding:2px 7px;
  border:1px solid var(--line-strong);
  font-size:11px;letter-spacing:.12em;color:var(--fg-dim);
}
.tag--red{border-color:var(--line-red);color:var(--red)}
.tag--lime{border-color:rgba(217,242,75,.5);color:var(--lime)}

.dot{display:inline-block;width:6px;height:6px;flex:none;border-radius:50%;background:var(--fg-faint)}
.dot--live{background:var(--red);box-shadow:0 0 0 3px rgba(232,85,47,.18)}
.dot--ok{background:var(--lime)}
.dot--warn{background:var(--amber)}

.notice{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 16px;border-left:2px solid var(--amber);
  background:rgba(242,160,61,.09);color:var(--paper);
  font-size:14.5px;line-height:1.7;
}
.notice--red{border-left-color:var(--red);background:rgba(232,85,47,.09)}

.rule{height:1px;border:0;background:var(--line);margin:clamp(20px,3vw,32px) 0}

.ribbon{
  position:relative;overflow:hidden;
  border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);
  background:var(--bg-panel);
}
.ribbon-track{display:flex;width:max-content;gap:32px;padding:10px 0;animation:ribbon-scroll 40s linear infinite}
.ribbon:hover .ribbon-track,.ribbon:focus-within .ribbon-track{animation-play-state:paused}
.ribbon-item{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.08em;color:var(--fg-dim);white-space:nowrap}
@keyframes ribbon-scroll{from{transform:translate3d(0,0,0)}to{transform:translate3d(-50%,0,0)}}

/* ---------- 显现动效 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
  will-change:opacity,transform;
}
.has-js [data-reveal].is-visible{opacity:1;transform:none;will-change:auto}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:6px var(--gutter) 22px;
    background:var(--ink-800);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 26px 44px -22px rgba(0,0,0,.9);
    max-height:calc(100dvh - 96px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex;animation:nav-in .2s var(--ease)}
  @keyframes nav-in{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
  .nav-list{flex-direction:column;align-items:stretch}
  .nav-link{
    min-height:0;padding:15px 4px;font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--lime);background:rgba(217,242,75,.06);border-bottom-color:var(--line-red)}
  .nav-cta{width:100%;margin:16px 0 0}
  .ft-top{grid-template-columns:1fr}
  .ft-contact{padding-top:18px}
}

@media (max-width:720px){
  :root{--header-h:64px;--gutter:16px}
  body{font-size:16px}
  .hd-utility-in{min-height:34px}
  .hd-utility-nav{display:none}
  .hd-kicker{font-size:10.5px;letter-spacing:.1em}
  .brand-mark{width:34px;height:34px;font-size:17px}
  .brand-name{font-size:18px}
  .brand-sub{font-size:9px;letter-spacing:.16em}
  .nav-toggle{padding:9px 11px;font-size:10px;letter-spacing:.14em}
  .ft-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ft-contact{grid-template-columns:1fr}
  .ft-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .site-footer::before{width:20px}
  .prose{font-size:16px}
  .breadcrumb{padding-top:14px}
}

/* ---------- 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;
    transition-delay:0ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .ribbon-track{animation:none}
  .site-nav[data-open]{animation:none}
}