/* ===== 球速体育 · 共享样式 /assets/site.css ===== */
:root{
  --ink:#0A0E0F;
  --layer:#141B1D;
  --lime:#B8FF2E;
  --blue:#3D7BFF;
  --orange:#FF6A2B;
  --teal:#062E2C;
  --wine:#3A0E1E;
  --indigo:#1B1236;
  --mist:#E8F0EE;
  --grid:#1E2A2C;
  --mute:#8C9B99;
  --white:#FFFFFF;
  --ink-on-lime:#08130A;
  --font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,"Courier New",monospace;
  --shell:1240px;
  --gutter:clamp(16px,4vw,48px);
  --line:1px solid var(--grid);
  --rail-h:64px;
  --index-h:52px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0;border-top:var(--line);margin:0}

/* 中文排版基础 */
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--mist);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.65;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{
  font-weight:900;
  line-height:1.04;
  letter-spacing:-.02em;
  color:var(--mist);
  text-wrap:balance;
}
h1{font-size:clamp(34px,6vw,72px)}
h2{font-size:clamp(26px,3.6vw,42px)}
h3{font-size:clamp(19px,2.2vw,26px)}
p{max-width:70ch}
strong{font-weight:800;color:var(--white)}
::selection{background:var(--lime);color:var(--ink-on-lime)}

:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* 布局骨架 */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}
.rule{height:1px;background:var(--grid);border:0}

/* 章节与标签 */
.section{padding-block:clamp(44px,7vw,96px);border-top:var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(20px,3vw,36px)}
.section-title{font-size:clamp(24px,3.4vw,40px)}
.label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mute);
}
.label--lime{color:var(--lime)}
.label--orange{color:var(--orange)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;
  border:1px solid var(--grid);
  border-radius:0;
  background:transparent;
  color:var(--mist);
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:800;
  letter-spacing:.06em;
  line-height:1;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--lime{background:var(--lime);border-color:var(--lime);color:var(--ink-on-lime)}
.btn--lime:hover{background:#c9ff5e;border-color:#c9ff5e}
.btn--ghost{border-color:#2c3c3e;color:var(--mist)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}

/* 面包屑 */
.breadcrumb{margin-block:20px 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.breadcrumb li + li::before{content:"／";margin-right:8px;color:#2f4042}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb [aria-current="page"]{color:var(--mist)}

/* 卡片 */
.card{position:relative;background:var(--layer);border:var(--line);padding:clamp(16px,2.4vw,28px)}
.card-title{font-size:18px;font-weight:800;letter-spacing:-.01em;margin-bottom:8px}
.card--teal{background:var(--teal)}
.card--wine{background:var(--wine)}
.card--indigo{background:var(--indigo)}

/* 数据芯片 */
.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border:1px solid var(--grid);border-radius:2px;
  background:transparent;color:var(--mist);
  font-size:12px;font-weight:700;letter-spacing:.06em;line-height:1.4;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{border-color:var(--lime);color:var(--lime)}
.chip[aria-pressed="true"]{background:var(--lime);border-color:var(--lime);color:var(--ink-on-lime)}
.chip[aria-pressed="true"]:hover{color:var(--ink-on-lime)}

/* 分段切换 */
.tabs{display:block}
.tab-list{display:flex;flex-wrap:wrap;gap:0;border-bottom:var(--line);position:relative}
.tab{
  padding:12px 18px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--mute);
  border-bottom:2px solid transparent;
  margin-bottom:-1px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tab:hover{color:var(--mist)}
.tab[aria-selected="true"]{color:var(--lime);border-bottom-color:var(--lime)}
.tab-panel{padding-top:20px}
.tab-panel[hidden]{display:none}

/* 仪表数字块 */
.stat-row{display:flex;flex-wrap:wrap;gap:1px;background:var(--grid);border:var(--line)}
.stat{flex:1 1 130px;background:var(--ink);padding:16px 18px}
.stat-value{display:block;font-family:var(--font-mono);font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1;letter-spacing:-.03em;color:var(--lime)}
.stat-label{display:block;margin-top:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}

/* 图片容器基础规则 */
.media-frame{
  position:relative;overflow:hidden;width:100%;
  aspect-ratio:16/10;
  background-color:#101718;
  background-image:repeating-linear-gradient(135deg,#141B1D 0 12px,#101718 12px 24px);
  border:var(--line);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:3/4}
.media-frame > img{
  width:100%;height:100%;object-fit:cover;
  filter:contrast(1.08) saturate(.88);
  transition:transform .5s var(--ease),filter .5s var(--ease);
}
.media-frame:hover > img{transform:scale(1.02);filter:contrast(1.12) saturate(.95)}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(184,255,46,.10) 0 1px,transparent 1px 100%);
  background-size:25% 100%;
  mix-blend-mode:screen;
}
.media-frame > figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  background:linear-gradient(to top,rgba(10,14,15,.92),rgba(10,14,15,0));
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute);
}

/* ===== 跳转链接 ===== */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:120;
  transform:translateY(-160%);
  padding:12px 18px;
  background:var(--lime);color:var(--ink-on-lime);
  font-size:13px;font-weight:800;letter-spacing:.06em;
  transition:transform .18s var(--ease);
}
.skip-link:focus-visible{transform:translateY(0);outline-offset:3px}

/* ===== 头部 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:var(--line);
}
.scroll-progress{
  position:fixed;top:0;left:0;z-index:90;
  width:100%;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime) 0%,#7BE3FF 55%,var(--blue) 100%);
  pointer-events:none;
}
.header-rail{
  position:relative;
  border-bottom:var(--line);
  background:
    linear-gradient(90deg,rgba(6,46,44,.92) 0%,rgba(6,46,44,.42) 34%,rgba(10,14,15,0) 66%),
    var(--ink);
  overflow:hidden;
}
.header-rail::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(30,42,44,.55) 0 1px,transparent 1px 88px);
  opacity:.75;
}
.rail-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  min-height:var(--rail-h);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:18px;height:18px;flex:0 0 auto;
  background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--mist)}
.brand-tag{font-family:var(--font-mono);font-size:9px;letter-spacing:.22em;color:var(--mute);margin-top:4px}
.rail-ticker{
  flex:1 1 auto;min-width:0;overflow:hidden;
  border-left:1px solid #233234;
  padding-left:clamp(12px,2vw,24px);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 92%,transparent);
}
.rail-ticker-track{
  display:flex;gap:56px;width:max-content;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#9FB2AF;
  animation:ticker 26s linear infinite;
}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.rail-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:11px 14px;border:1px solid #2c3c3e;
  font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--mist);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-bars{
  display:block;width:18px;height:2px;background:currentColor;
  box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;
  transition:box-shadow .18s var(--ease),transform .18s var(--ease);
}
.nav-toggle[aria-expanded="true"]{color:var(--lime);border-color:var(--lime)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor}
.nav-toggle-text{font-family:var(--font-mono);text-transform:uppercase}

.header-index{background:var(--ink)}
.index-inner{display:flex;align-items:center;gap:clamp(12px,2vw,22px);min-height:var(--index-h)}
.round-badge{
  flex:0 0 auto;
  padding:4px 10px;
  background:var(--lime);color:var(--ink-on-lime);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.1em;
  clip-path:polygon(0 0,100% 0,calc(100% - 7px) 100%,0 100%);
}
.primary-nav{flex:1 1 auto;min-width:0}
.nav-list{display:flex;flex-wrap:wrap;align-items:stretch;gap:2px}
.nav-link{
  display:block;position:relative;
  padding:15px 13px;
  font-size:14px;font-weight:700;letter-spacing:.02em;
  color:#B9C7C4;
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link:hover{color:var(--lime);background:rgba(184,255,46,.05)}
.nav-link[aria-current="page"]{color:var(--lime);border-bottom-color:var(--lime)}

/* ===== 页脚 ===== */
.site-footer{position:relative;background:var(--ink);border-top:var(--line);margin-top:clamp(40px,6vw,88px)}
.footer-main{border-bottom:var(--line);background:linear-gradient(180deg,rgba(6,46,44,.55) 0%,rgba(10,14,15,0) 100%)}
.footer-main-inner{
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  align-items:center;gap:clamp(24px,4vw,64px);
  padding-block:clamp(32px,4.6vw,64px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.footer-logo{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.01em;line-height:1;color:var(--mist)}
.footer-line{font-size:14px;color:#A9B8B5;max-width:46ch}
.footer-gauge{display:flex;flex-direction:column;align-items:center;gap:10px}
.gauge-ring{
  position:relative;width:108px;height:108px;border-radius:50%;
  background:conic-gradient(var(--lime) 0 58%,var(--grid) 58% 100%);
}
.gauge-ring::after{content:"";position:absolute;inset:10px;border-radius:50%;background:var(--ink);z-index:0}
.gauge-core{
  position:absolute;inset:0;z-index:1;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:24px;font-weight:700;line-height:1;color:var(--lime);
}
.gauge-core em{font-style:normal;font-size:12px;margin-left:1px;color:#9FB2AF}
.gauge-caption{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}

.footer-cols{border-bottom:var(--line)}
.footer-cols-inner{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(24px,4vw,64px);
  padding-block:clamp(28px,4vw,48px);
}
.footer-col-title{
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--mute);
  margin-bottom:16px;
}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:14px;color:#C6D2CF;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer-col a:hover{color:var(--lime);border-bottom-color:var(--lime)}

.footer-contact{border-bottom:var(--line);background:rgba(20,27,29,.55)}
.footer-contact-inner{padding-block:clamp(28px,4vw,48px)}
.contact-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px 28px}
.contact-list li{display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--grid);padding-left:12px}
.contact-key{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute)}
.contact-val{font-size:14px;font-weight:700;color:var(--mist);word-break:break-all}
.footer-note{margin-top:18px;font-size:12px;line-height:1.7;color:#8C9B99;max-width:80ch}

.footer-legal{padding-block:20px}
.footer-legal-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px}
.footer-copy{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--mute)}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:20px}
.footer-legal-links a{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#9FB2AF;border-bottom:1px dashed #33464a;padding-bottom:2px}
.footer-legal-links a:hover{color:var(--lime);border-bottom-color:var(--lime)}

/* ===== 响应式 ===== */
@media (max-width:1080px){
  .rail-ticker{display:none}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;margin-left:auto}
  .rail-actions .btn--ghost{display:none}
  .rail-actions{margin-left:0}
  .index-inner{
    flex-wrap:wrap;
    gap:10px;
    padding-block:0;
  }
  .round-badge{align-self:center;margin-block:10px}
  .primary-nav{width:100%;flex:1 1 100%}
  .nav-list{
    flex-wrap:nowrap;
    overflow-x:auto;
    gap:0;
    scroll-snap-type:x proximity;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
    border-top:var(--line);
  }
  .nav-list::-webkit-scrollbar{display:none}
  .nav-link{white-space:nowrap;padding:12px 14px;scroll-snap-align:start;font-size:13px}
  .primary-nav[data-open] .nav-list{
    flex-direction:column;
    flex-wrap:nowrap;
    overflow:visible;
    scroll-snap-type:none;
  }
  .primary-nav[data-open] .nav-link{
    padding:14px 4px;
    border-bottom:var(--line);
    border-left:2px solid transparent;
  }
  .primary-nav[data-open] .nav-link[aria-current="page"]{
    border-bottom-color:var(--grid);
    border-left-color:var(--lime);
    padding-left:12px;
  }
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
  .col-3,.col-4{grid-column:span 3}
  .col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 6}
  .footer-main-inner{grid-template-columns:minmax(0,1fr);align-items:flex-start}
  .footer-gauge{flex-direction:row;align-items:center;gap:16px}
}
@media (max-width:600px){
  :root{--rail-h:58px}
  body{font-size:15px}
  .brand-name{font-size:17px}
  .brand-tag{font-size:8px;letter-spacing:.16em}
  .rail-actions .btn{padding:10px 12px;font-size:12px;letter-spacing:.02em}
  .nav-toggle{padding:10px 12px}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 2}
  .footer-cols-inner{grid-template-columns:minmax(0,1fr)}
  .footer-legal-inner{flex-direction:column;align-items:flex-start}
  .gauge-ring{width:88px;height:88px}
  .gauge-core{font-size:20px}
  .stat-row{flex-direction:column}
  .stat{flex:1 1 auto}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rail-ticker-track{animation:none;transform:none}
  .media-frame:hover > img{transform:none}
  .btn:hover{transform:none}
}