/* ============================================================
   球速体育主站 · 共享样式 /assets/site.css
   0 变量 / 1 Reset / 2 基础排版 / 3 通用组件 / 4 头部 / 5 页脚
   6 响应式 / 7 动效与减弱动态
   ============================================================ */

/* ---------- 0. 变量 ---------- */
:root{
  --ink-900:#0A0E27;
  --ink-800:#131A3A;
  --ink-700:#182144;
  --line:#1C2A4A;
  --line-soft:#22314F;
  --white:#F7FAFF;
  --muted:#A7B0C0;
  --green:#00E676;
  --green-soft:#6EF3C5;
  --orange:#FF6D00;
  --yellow:#FFD54F;
  --status:#00C853;
  --maxw:1240px;
  --gutter:24px;
  --cut:22px;
  --font-display:"Impact","Haettenschweiler","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono","Cascadia Mono",Consolas,"Liberation Mono",monospace;
  --font-serif:"Songti SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
}

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html[data-nav-open="true"]{overflow:hidden}
body{
  margin:0;
  min-height:100vh;
  background:var(--ink-900);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,picture,svg,video{max-width:100%}
img{height:auto}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit}

/* ---------- 2. 基础排版 ---------- */
h1,h2,h3,h4{
  margin:0 0 .55em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.015em;
  color:var(--white);
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--green-soft);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--white)}
strong{color:var(--white)}
:focus-visible{outline:2px solid var(--green);outline-offset:3px}
::selection{background:var(--green);color:#06122B}

/* ---------- 3. 通用组件 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}

.section{position:relative;padding:clamp(48px,7vw,96px) 0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;margin-bottom:clamp(24px,3.4vw,42px);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--green);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--orange);transform:skewX(-30deg)}
.display-title{
  margin:0;font-family:var(--font-display);
  font-size:clamp(30px,5.4vw,64px);line-height:1.02;
  letter-spacing:-.02em;color:var(--white);
}
.lede{
  max-width:62ch;margin:0;
  font-family:var(--font-serif);
  font-size:clamp(15px,1.3vw,18px);line-height:1.95;color:#C6CEDD;
}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 26px;
  font-family:var(--font-display);font-size:15px;letter-spacing:.1em;
  text-decoration:none;border:1px solid transparent;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:transform .2s ease,box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(118deg,var(--green) 0%,var(--green-soft) 72%,var(--yellow) 130%);
  color:#06122B;box-shadow:0 16px 38px -22px rgba(0,230,118,.95);
}
.btn-primary:hover,.btn-primary:focus-visible{color:#06122B;transform:translateY(-2px);box-shadow:0 20px 44px -20px rgba(0,230,118,1)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--white)}
.btn-ghost:hover,.btn-ghost:focus-visible{border-color:var(--orange);color:var(--orange)}

.breadcrumb{padding:18px 0 0;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--muted)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-item{color:var(--muted)}
.breadcrumb-item a{color:var(--muted)}
.breadcrumb-item a:hover{color:var(--green-soft)}
.breadcrumb-item[aria-current="page"]{color:var(--white)}
.breadcrumb-sep{color:#39496F}

.grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(var(--grid-min,240px),1fr))}
.grid-2{display:grid;gap:22px;grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{display:grid;gap:22px;grid-template-columns:repeat(3,minmax(0,1fr))}

.panel{
  position:relative;padding:26px;
  background:var(--ink-800);border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.panel-cut{clip-path:polygon(var(--cut) 0,100% 0,100% 100%,0 100%,0 var(--cut))}

.mono-label{display:block;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.stat-value{
  display:block;font-family:var(--font-mono);
  font-size:clamp(28px,4vw,44px);line-height:1.05;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;color:var(--green);
}
.tag{
  display:inline-block;padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--yellow);border:1px solid rgba(255,213,79,.38);background:rgba(255,213,79,.08);
}
.track-rule{height:1px;border:0;margin:32px 0;background:repeating-linear-gradient(90deg,var(--line) 0 18px,transparent 18px 30px)}

.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/9;
  background:linear-gradient(150deg,var(--ink-700),var(--ink-900));
  border:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.media-frame > img,
.media-frame > picture > 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(10,14,39,0) 55%,rgba(10,14,39,.62) 100%),
    repeating-linear-gradient(90deg,rgba(28,42,74,.55) 0 1px,transparent 1px 64px);
}
.media-frame-wide{aspect-ratio:21/9}
.media-frame-tall{aspect-ratio:4/5}
.media-frame-square{aspect-ratio:1/1}

/* ---------- 4. 头部 ---------- */
.skip-link{
  position:absolute;left:16px;top:-90px;z-index:300;
  padding:12px 20px;background:var(--green);color:#06122B;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-decoration:none;transition:top .2s ease;
}
.skip-link:focus,.skip-link:focus-visible{top:14px;color:#06122B}

.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#0A0E27 0%,#0C1230 100%);
  border-bottom:1px solid var(--line);
}
.header-grid{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(90deg,var(--line) 1px,transparent 1px),
    linear-gradient(0deg,var(--line) 1px,transparent 1px);
  background-size:72px 36px;
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.95),transparent 82%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.95),transparent 82%);
}
.header-speed{position:relative;z-index:2;height:2px;overflow:hidden;background:var(--line)}
.header-speed::before{
  content:"";position:absolute;top:0;left:0;width:26%;height:100%;
  background:linear-gradient(90deg,transparent,var(--green),var(--green-soft),transparent);
  animation:speed-sweep 6s linear infinite;
}
.header-speed::after{
  content:"";position:absolute;top:0;right:0;width:84px;height:100%;
  background:repeating-linear-gradient(90deg,var(--orange) 0 4px,transparent 4px 12px);
  opacity:.9;
}
@keyframes speed-sweep{0%{transform:translateX(-45%)}100%{transform:translateX(360%)}}

.header-shell{
  position:relative;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px 24px;flex-wrap:wrap;
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:14px var(--gutter);
}
.header-left{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;min-width:0;flex:1 1 auto}

.brand{display:inline-flex;align-items:center;gap:11px;color:var(--white);text-decoration:none}
.brand:hover{color:var(--white)}
.brand-mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:40px;height:40px;
  background:linear-gradient(135deg,var(--green),var(--green-soft));
  color:#06122B;font-family:var(--font-display);font-size:18px;letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.brand-copy{display:flex;flex-direction:column;line-height:1.12;min-width:0}
.brand-name{font-family:var(--font-display);font-size:20px;letter-spacing:.06em;color:var(--white)}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase}

.brand-tagline{
  margin:0;padding-left:16px;
  border-left:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--muted);
}
.quickbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.quickbar > li{display:flex}
.quicklink{
  display:inline-block;padding:6px 11px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--muted);text-decoration:none;
  border:1px solid var(--line);
  background:rgba(19,26,58,.6);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.quicklink:hover,.quicklink:focus-visible{color:#06122B;background:var(--green-soft);border-color:var(--green-soft)}

.header-right{display:flex;align-items:center;gap:12px}

.primary-nav{display:flex;align-items:center;gap:16px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  position:relative;display:block;padding:10px 12px;
  font-size:14px;letter-spacing:.04em;color:#C9D2E3;text-decoration:none;
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--green);
  transform:scaleX(0) skewX(-24deg);transform-origin:left;
  transition:transform .26s cubic-bezier(.33,1,.68,1);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--white)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1) skewX(-24deg)}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"]::after{transform:scaleX(1) skewX(-24deg);background:var(--orange)}

.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 18px;
  font-family:var(--font-display);font-size:14px;letter-spacing:.12em;
  color:#06122B;text-decoration:none;white-space:nowrap;
  background:linear-gradient(120deg,var(--green) 0%,var(--green-soft) 70%,var(--yellow) 140%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:transform .2s ease,box-shadow .25s ease;
}
.nav-cta:hover,.nav-cta:focus-visible{color:#06122B;transform:translateY(-1px);box-shadow:0 12px 28px -18px rgba(0,230,118,.95)}

.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  place-items:center;cursor:pointer;
  background:rgba(0,230,118,.1);border:1px solid var(--line);color:var(--white);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover,.nav-toggle:focus-visible{background:rgba(0,230,118,.2);border-color:var(--green)}
.nav-toggle-bars{display:block;position:relative;width:18px;height:12px}
.nav-toggle-bars span{position:absolute;left:0;width:100%;height:2px;background:var(--green);transition:transform .25s ease,opacity .2s ease}
.nav-toggle-bars span:nth-child(1){top:0}
.nav-toggle-bars span:nth-child(2){top:5px}
.nav-toggle-bars span:nth-child(3){top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-meter{position:relative;z-index:2;height:2px;background:rgba(28,42,74,.75)}
.scroll-meter-bar{
  display:block;width:0;height:100%;
  background:linear-gradient(90deg,var(--green) 0%,var(--green-soft) 58%,var(--yellow) 100%);
  transition:width .12s linear;
}

/* ---------- 5. 页脚 ---------- */
.site-footer{
  position:relative;
  background:linear-gradient(180deg,var(--ink-900) 0%,#070A1C 100%);
  border-top:1px solid var(--line);
  color:var(--white);
}
.footer-shell{width:100%;max-width:var(--maxw);margin:0 auto;padding:clamp(38px,5vw,60px) var(--gutter) 30px}

.footer-top{
  display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;
  gap:20px 32px;padding-bottom:24px;border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer-line{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--muted)}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;padding-top:6px}
.footer-link{
  position:relative;padding-bottom:3px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  color:#C9D2E3;text-decoration:none;
}
.footer-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--orange);transform:scaleX(0);transform-origin:right;
  transition:transform .26s ease;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--white)}
.footer-link:hover::after,.footer-link:focus-visible::after{transform:scaleX(1);transform-origin:left}

.footer-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;
  margin:26px 0 30px;padding:16px 20px;
  border:1px solid var(--line);
  background:linear-gradient(100deg,rgba(0,230,118,.10),rgba(19,26,58,.94) 45%,rgba(255,109,0,.12));
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px));
}
.strip-label{
  display:inline-flex;align-items:center;gap:9px;margin:0;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.24em;
  color:var(--green);white-space:nowrap;
}
.strip-label::before{
  content:"";width:7px;height:7px;border-radius:50%;
  background:var(--status);box-shadow:0 0 0 3px rgba(0,200,83,.18);
}
.strip-list{display:flex;flex-wrap:wrap;gap:10px 22px}
.strip-item{
  position:relative;padding-left:14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;color:#C9D2E3;
}
.strip-item::before{
  content:"";position:absolute;left:0;top:.62em;
  width:5px;height:5px;background:var(--orange);transform:rotate(45deg);
}

.footer-grid{display:grid;gap:22px 28px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.footer-block{padding-left:14px;border-left:1px solid var(--line)}
.footer-block-title{
  margin:0 0 6px;font-family:var(--font-mono);
  font-size:10.5px;font-weight:500;letter-spacing:.22em;color:var(--muted);
}
.footer-value{margin:0;font-size:14.5px;line-height:1.6;color:var(--white);word-break:break-word}

.footer-note{
  max-width:82ch;margin:26px 0 0;padding-top:18px;
  border-top:1px dashed var(--line-soft);
  font-size:13px;line-height:1.85;color:var(--muted);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px;margin-top:22px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:#6C7690;
}
.footer-copy{margin:0}
.footer-mark{margin:0;color:var(--green);letter-spacing:.28em}

/* ---------- 6. 响应式 ---------- */
@media (max-width:1120px){
  .brand-tagline{display:none}
  .nav-link{padding:10px 9px;font-size:13.5px}
}

@media (max-width:960px){
  .nav-toggle{display:grid}
  .header-shell{flex-wrap:nowrap;padding:12px var(--gutter)}
  .header-left{gap:8px 12px}
  .brand-sub{display:none}
  .brand-name{font-size:18px}
  .quicklink{font-size:10px;padding:5px 9px;letter-spacing:.04em}

  .primary-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:90;
    width:min(86vw,360px);
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:92px 22px 34px;
    overflow-y:auto;
    background:linear-gradient(168deg,var(--ink-800) 0%,#0A0E27 74%);
    border-left:1px solid var(--line);
    clip-path:polygon(26px 0,100% 0,100% 100%,0 100%,0 26px);
    transform:translateX(106%);
    transition:transform .38s cubic-bezier(.33,1,.68,1);
  }
  .primary-nav[data-open="true"]{transform:translateX(0)}
  .site-header[data-open="true"]::after{
    content:"";position:fixed;inset:0;z-index:85;
    background:rgba(4,7,22,.7);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{padding:16px 8px;font-size:17px;letter-spacing:.06em;color:#DCE3F1}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--green)}
  .nav-link[aria-current="page"]::before{
    content:"";position:absolute;left:-6px;top:50%;
    width:6px;height:6px;background:var(--orange);
    transform:translateY(-50%) rotate(45deg);
  }
  .nav-cta{margin-top:24px;width:100%;padding:14px 18px}
}

@media (max-width:720px){
  :root{--gutter:18px}
  .header-shell{padding:10px var(--gutter);gap:10px}
  .header-left{flex-wrap:wrap;row-gap:8px}
  .quickbar{order:3;width:100%}
  .brand-mark{width:34px;height:34px;font-size:15px}
  .brand-name{font-size:16px}
  .nav-toggle{width:40px;height:40px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .panel{padding:20px}
}

@media (max-width:480px){
  .brand-name{font-size:15px;letter-spacing:.02em}
  .quicklink{font-size:9.5px;padding:4px 8px}
  .footer-strip{padding:14px 16px}
  .strip-item{font-size:11px}
}

/* ---------- 7. 动效与减弱动态 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(20px);
  transition:opacity .62s ease,transform .68s cubic-bezier(.22,.61,.36,1);
}
[data-reveal].is-visible{opacity:1;transform:none}
[data-reveal][data-reveal-delay="1"]{transition-delay:.08s}
[data-reveal][data-reveal-delay="2"]{transition-delay:.16s}
[data-reveal][data-reveal-delay="3"]{transition-delay:.24s}

@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;transition:none}
  .header-speed::before{animation:none;transform:translateX(0);width:42%}
}