/* ============================================================
   球速体育主站 · 共享样式 /assets/site.css
   夜间赛场控制台：左轨导览 + 状态条 + 深墨蓝底
   ============================================================ */

:root{
  --ink:#060C16;
  --panel:#0D1A2B;
  --lift:#14263C;
  --cyan:#2FE3D0;
  --orange:#FF6B2C;
  --signal:#FFD24A;
  --text:#E9F1FB;
  --muted:#93A7C0;
  --line:#22374F;
  --green:#3BE08A;

  --rail-w:84px;
  --bar-h:36px;
  --maxw:1240px;
  --radius:18px;
  --gutter:clamp(18px,5vw,64px);

  --font-display:"Barlow Condensed","Impact","Haettenschweiler","Arial Narrow","PingFang SC","Noto Sans SC",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;text-size-adjust:100%}

body,
h1,h2,h3,h4,h5,h6,
p,figure,blockquote,ul,ol,dl,dd{margin:0}

ul,ol{padding:0;list-style:none}

img,svg,video{display:block;max-width:100%;height:auto}

button{font:inherit;color:inherit;background:none;border:0}

html{scroll-behavior:smooth}

body{
  min-height:100vh;
  background:
    radial-gradient(1100px 620px at 84% -12%,rgba(47,227,208,.11),transparent 62%),
    radial-gradient(880px 520px at -8% 104%,rgba(255,107,44,.09),transparent 66%),
    var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:500;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}

body.nav-open{overflow:hidden}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  color:var(--text);
  line-height:1.06;
  letter-spacing:-.02em;
}

h1{font-size:clamp(38px,7.4vw,86px)}
h2{font-size:clamp(26px,4vw,46px)}
h3{font-size:clamp(20px,2.5vw,29px);letter-spacing:-.01em;line-height:1.18}
h4{font-size:clamp(17px,1.6vw,20px);letter-spacing:-.005em;line-height:1.3}

p{color:var(--text)}

a{color:var(--cyan);text-decoration:none}

strong{font-weight:700;color:var(--text)}

::selection{background:var(--cyan);color:#04121A}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

/* ---------- 排版工具 ---------- */

.mono{
  font-family:var(--font-mono);
  font-feature-settings:"tnum" 1;
  letter-spacing:.04em;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  line-height:1.4;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:currentColor;
  flex:none;
}

/* ---------- 容器 ---------- */

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

@media (min-width:900px){
  .wrap{padding-inline:clamp(20px,2.4vw,36px) clamp(24px,4vw,64px)}
}

/* ---------- 跳转链接 ---------- */

.skip-link{
  position:fixed;
  top:0;
  left:0;
  z-index:400;
  transform:translateY(-130%);
  padding:10px 20px;
  background:var(--cyan);
  color:#04121A;
  font-weight:700;
  font-size:14px;
  border-radius:0 0 10px 0;
  transition:transform .18s var(--ease);
}
.skip-link:focus{
  transform:none;
  outline:2px solid var(--signal);
  outline-offset:2px;
}

/* ============================================================
   头部
   ============================================================ */

.site-header{
  position:relative;
  z-index:80;
}

/* 顶部滚动进度 */
.scroll-meter{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:2px;
  z-index:150;
  pointer-events:none;
  background:rgba(34,55,79,.45);
}
.scroll-meter__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),rgba(47,227,208,.35) 58%,var(--orange));
}

/* 状态条 */
.status-bar{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
  height:var(--bar-h);
  padding-inline:16px;
  background:linear-gradient(90deg,rgba(20,38,60,.96),rgba(13,26,43,.97));
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}

.status-bar__dot{
  flex:none;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 10px rgba(59,224,138,.55);
  animation:breathe 3.2s ease-in-out infinite;
}

@keyframes breathe{
  0%,100%{opacity:.5;transform:scale(.82)}
  50%{opacity:1;transform:scale(1)}
}

.status-bar__text{
  min-width:0;
  color:var(--text);
  font-size:11.5px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.status-bar__cta{
  flex:none;
  margin-inline-start:auto;
  color:var(--signal);
  font-size:11.5px;
  letter-spacing:.08em;
  white-space:nowrap;
  padding-bottom:1px;
  border-bottom:1px solid rgba(255,210,74,.45);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.status-bar__cta:hover{
  color:#FFE38C;
  border-bottom-color:var(--signal);
}

/* 品牌轨道 */
.brand-rail{
  display:flex;
  flex-direction:row;
  align-items:center;
  gap:12px;
  padding:10px 14px 12px;
  background:linear-gradient(180deg,#0B1828,#060C16 72%);
  border-bottom:1px solid var(--line);
}

.brand-rail__brand{
  display:flex;
  flex-direction:row;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:none;
}

.brand-rail__mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  flex:none;
  border:1px solid rgba(47,227,208,.55);
  border-radius:10px;
  background:rgba(47,227,208,.07);
  box-shadow:inset 0 0 12px rgba(47,227,208,.16);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
}

.brand-rail__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  letter-spacing:.1em;
  line-height:1.2;
  color:var(--text);
  white-space:nowrap;
}

.brand-rail__tag{
  display:none;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.26em;
  color:var(--muted);
}

/* 导航（移动端抽屉） */
.rail-nav{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  width:min(84vw,320px);
  z-index:75;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:88px 20px 32px;
  background:linear-gradient(180deg,#0B1828 0%,#060C16 100%);
  border-right:1px solid var(--line);
  box-shadow:24px 0 70px rgba(0,0,0,.55);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .3s var(--ease),visibility .3s var(--ease);
  overflow-y:auto;
}

.rail-nav[data-open="true"]{
  transform:translateX(0);
  visibility:visible;
}

.rail-nav__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  width:100%;
}

.rail-nav__item{width:100%}

.rail-nav__link{
  position:relative;
  display:block;
  padding:13px 10px 13px 18px;
  border-radius:0 10px 10px 0;
  color:var(--text);
  font-size:19px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:.04em;
  transition:color .18s var(--ease),background .18s var(--ease);
}

.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  translate:0 -50%;
  width:3px;
  height:0;
  border-radius:2px;
  background:var(--cyan);
  transition:height .2s var(--ease);
}

.rail-nav__link:hover{color:var(--cyan);background:rgba(20,38,60,.75)}

.rail-nav__link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(47,227,208,.09);
}
.rail-nav__link[aria-current="page"]::before{height:26px}

.rail-foot{display:none}

.nav-toggle{
  position:relative;
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-inline-start:auto;
  padding:9px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(20,38,60,.72);
  color:var(--text);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:rgba(47,227,208,.55);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}

.nav-toggle__icon{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:18px;
}
.nav-toggle__icon span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* ============================================================
   桌面 / 平板：常驻品牌轨道
   ============================================================ */

@media (min-width:900px){

  body{
    padding-inline-start:var(--rail-w);
    padding-block-start:var(--bar-h);
  }

  .status-bar{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:72;
    padding-inline:calc(var(--rail-w) + 18px) 24px;
  }

  .brand-rail{
    position:fixed;
    top:var(--bar-h);
    left:0;
    bottom:0;
    width:var(--rail-w);
    z-index:66;
    flex-direction:column;
    align-items:center;
    gap:20px;
    padding:20px 0 16px;
    border-bottom:0;
    border-right:1px solid var(--line);
    overflow-y:auto;
  }

  .brand-rail::after{
    content:"";
    position:absolute;
    top:24px;
    bottom:24px;
    right:-1px;
    width:1px;
    background:linear-gradient(180deg,transparent,rgba(47,227,208,.5),transparent);
    pointer-events:none;
  }

  .brand-rail__brand{
    flex-direction:column;
    align-items:center;
    gap:12px;
  }

  .brand-rail__name{
    writing-mode:vertical-rl;
    font-size:16px;
    letter-spacing:.26em;
    white-space:normal;
  }

  .brand-rail__tag{
    display:block;
    writing-mode:vertical-rl;
    font-size:9.5px;
    letter-spacing:.3em;
    color:var(--muted);
    opacity:.85;
  }

  .rail-nav{
    position:static;
    transform:none;
    visibility:visible;
    width:100%;
    flex:1 1 auto;
    min-height:0;
    justify-content:center;
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    overflow-y:auto;
  }

  .rail-nav__list{
    gap:2px;
    padding-inline:6px;
  }

  .rail-nav__link{
    padding:9px 4px 9px 10px;
    border-radius:0 8px 8px 0;
    font-size:12px;
    font-weight:600;
    line-height:1.4;
    letter-spacing:.02em;
    color:var(--muted);
  }

  .rail-nav__link:hover{
    color:var(--text);
    background:rgba(20,38,60,.85);
  }

  .rail-nav__link[aria-current="page"]{
    color:var(--cyan);
    background:rgba(47,227,208,.08);
  }

  .rail-nav__link[aria-current="page"]::before{height:18px}

  .rail-foot{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:5px;
    flex:none;
    font-family:var(--font-mono);
    font-size:9px;
    letter-spacing:.14em;
    color:var(--muted);
  }
  .rail-foot__code{
    color:var(--orange);
    font-size:12px;
    font-weight:700;
    letter-spacing:.06em;
  }
  .rail-foot__label{opacity:.8}

  .nav-toggle{display:none}
}

/* ============================================================
   页脚
   ============================================================ */

.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,140px);
  padding:clamp(40px,6vw,76px) var(--gutter) clamp(24px,3vw,34px);
  border-top:1px solid var(--line);
  background:
    radial-gradient(760px 320px at 12% 0%,rgba(47,227,208,.10),transparent 70%),
    radial-gradient(560px 260px at 96% 100%,rgba(255,107,44,.08),transparent 72%),
    linear-gradient(180deg,#0A1524,#050A12);
}

.footer-grid{
  max-width:var(--maxw);
  margin-inline:auto;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,4vw,44px);
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}

.footer-brand__link{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  align-self:flex-start;
}

.footer-brand__mark{
  display:grid;
  place-items:center;
  width:40px;
  height:40px;
  flex:none;
  border:1px solid rgba(47,227,208,.5);
  border-radius:12px;
  background:rgba(47,227,208,.07);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
}

.footer-brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(22px,2.6vw,30px);
  letter-spacing:.06em;
  color:var(--text);
  line-height:1.1;
}

.footer-brand__line{
  max-width:46ch;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}

.footer-col{min-width:0}

.footer-col__title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:.2em;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:9px;
}
.footer-col__title::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:1px;
  background:var(--cyan);
  flex:none;
  opacity:.8;
}

.footer-col__list{
  display:flex;
  flex-direction:column;
  gap:9px;
}

.footer-col__link{
  display:inline-block;
  color:var(--text);
  font-size:15px;
  line-height:1.6;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-col__link:hover,
.footer-col__link:focus-visible{
  color:var(--cyan);
  border-bottom-color:rgba(47,227,208,.6);
}

.footer-legal{
  max-width:var(--maxw);
  margin:clamp(30px,4vw,52px) auto 0;
  padding-top:clamp(18px,2.2vw,26px);
  border-top:1px solid var(--line);
  display:grid;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.9;
  letter-spacing:.04em;
  color:var(--muted);
}

.footer-legal__copy{color:var(--text)}

.footer-legal__icp{color:var(--muted)}

.footer-legal__contact{color:var(--muted);word-break:break-word}

.footer-legal__note{
  color:var(--muted);
  opacity:.85;
  max-width:76ch;
  word-break:break-word;
}

@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

@media (min-width:1000px){
  .footer-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .footer-brand{
    grid-column:1 / -1;
    flex-direction:row;
    align-items:baseline;
    justify-content:space-between;
    gap:28px;
    padding-bottom:26px;
    margin-bottom:6px;
  }
  .footer-brand__line{max-width:52ch;text-align:right}
  .footer-legal{
    grid-template-columns:auto auto 1fr;
    column-gap:26px;
    align-items:baseline;
  }
  .footer-legal__note{grid-column:1 / -1}
}

/* ============================================================
   通用组件
   ============================================================ */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),
             border-color .18s var(--ease),color .18s var(--ease),
             box-shadow .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

.btn--primary{
  background:var(--cyan);
  color:#04121A;
  box-shadow:0 10px 30px rgba(47,227,208,.18);
}
.btn--primary:hover{background:#5FF0E1;box-shadow:0 14px 36px rgba(47,227,208,.26)}

.btn--ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line);
}
.btn--ghost:hover{border-color:rgba(47,227,208,.6);color:var(--cyan)}

.btn--signal{
  background:rgba(255,210,74,.12);
  color:var(--signal);
  border-color:rgba(255,210,74,.45);
}
.btn--signal:hover{background:rgba(255,210,74,.2);border-color:var(--signal)}

.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(20,38,60,.55);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  line-height:1.6;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}

.pill--cyan{color:var(--cyan);border-color:rgba(47,227,208,.45);background:rgba(47,227,208,.1)}
.pill--orange{color:var(--orange);border-color:rgba(255,107,44,.45);background:rgba(255,107,44,.1)}
.pill--signal{color:var(--signal);border-color:rgba(255,210,74,.45);background:rgba(255,210,74,.1)}
.pill--green{color:var(--green);border-color:rgba(59,224,138,.45);background:rgba(59,224,138,.1)}

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.7;
  color:var(--muted);
}
.breadcrumbs__link{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumbs__link:hover{color:var(--cyan);border-bottom-color:rgba(47,227,208,.6)}
.breadcrumbs__sep{color:var(--line);font-size:11px}
.breadcrumbs__current{color:var(--text)}

.grid{
  display:grid;
  gap:clamp(16px,2.4vw,32px);
  grid-template-columns:1fr;
}

.grid--split{grid-template-columns:1fr}
.grid--thirds{grid-template-columns:1fr}

@media (min-width:760px){
  .grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (min-width:900px){
  .grid--split{grid-template-columns:1.35fr .9fr}
}

.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(20,38,60,.92),rgba(13,26,43,.94));
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.panel:hover{
  transform:translateY(-4px);
  border-color:rgba(47,227,208,.45);
  box-shadow:0 18px 44px rgba(0,0,0,.45);
}

.panel__title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2.4vw,28px);
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--text);
}

.fold{
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(13,26,43,.9);
  overflow:hidden;
}
.fold + .fold{margin-top:10px}

.fold__summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:16px 18px;
  cursor:pointer;
  list-style:none;
  font-size:15px;
  font-weight:700;
  line-height:1.5;
  color:var(--text);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary:hover{color:var(--cyan);background:rgba(20,38,60,.6)}
.fold__summary::after{
  content:"+";
  flex:none;
  font-family:var(--font-mono);
  font-size:18px;
  color:var(--cyan);
}
.fold[open] .fold__summary::after{content:"–"}

.fold__body{
  padding:0 18px 18px;
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
}

/* ---------- 图片容器基础规则 ---------- */

.media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    linear-gradient(140deg,rgba(20,38,60,.95),rgba(13,26,43,.9) 46%,rgba(6,12,22,.98));
  isolation:isolate;
}

.media::before{
  content:"";
  position:absolute;
  inset:-20% -10% auto 40%;
  height:150%;
  rotate:-16deg;
  background:linear-gradient(90deg,transparent,rgba(47,227,208,.14),transparent 72%);
  pointer-events:none;
  z-index:0;
}

.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(115deg,rgba(47,227,208,.10) 0 1px,transparent 1px 24px);
  opacity:.55;
  pointer-events:none;
  z-index:1;
}

.media > img,
.media > picture > img{
  position:relative;
  z-index:2;
  width:100%;
  height:100%;
  object-fit:cover;
}

.media--wide{aspect-ratio:16 / 9}
.media--tall{aspect-ratio:4 / 5}
.media--square{aspect-ratio:1 / 1}

.media__caption{
  position:absolute;
  z-index:3;
  left:14px;
  bottom:14px;
  max-width:calc(100% - 28px);
  padding:5px 12px;
  border:1px solid rgba(34,55,79,.9);
  border-radius:999px;
  background:rgba(6,12,22,.78);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  line-height:1.7;
  color:var(--muted);
  backdrop-filter:blur(2px);
}

/* ---------- 滚动显现 ---------- */

[data-reveal]{
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}

.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
}

.js [data-reveal][data-revealed]{
  opacity:1;
  transform:none;
}

/* ============================================================
   减少动态
   ============================================================ */

@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;
  }

  .js [data-reveal],
  .js [data-reveal][data-revealed]{
    opacity:1;
    transform:none;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__icon span:first-child,
  .nav-toggle[aria-expanded="true"] .nav-toggle__icon span:last-child{
    transform:none;
  }
}