/* ============================================================
   易倍体育看台 /assets/site.css  —— 共享外壳与基础组件
   1 Reset  2 Tokens  3 Base  4 Header  5 Footer
   6 Layout  7 Components  8 Media  9 Motion  10 Responsive
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[id]{scroll-margin-top:calc(var(--topbar-h) + 20px);}

/* ---------- 2. Tokens ---------- */
:root{
  --night:#0B2018;
  --charcoal:#101314;
  --dark-green:#143527;
  --lime:#C8FF3D;
  --lime-soft:#E4FFA3;
  --score:#FF5A2B;
  --white:#F7FAF8;
  --mist:#9AA8A1;
  --paper:#F2E9D8;
  --rule:#C9B99A;
  --ink:#1B1E1C;
  --warn:#FFC53D;

  --line:rgba(247,250,248,.14);
  --line-strong:rgba(247,250,248,.3);
  --ink-line:rgba(27,30,28,.22);

  --rail-w:88px;
  --topbar-h:56px;
  --gutter:clamp(16px,3.6vw,44px);
  --maxw:1240px;
  --speed:180ms;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Condensed","DIN Alternate","Arial Narrow",Impact,"PingFang SC",system-ui,sans-serif;
}

/* ---------- 3. Base ---------- */
body{
  min-height:100vh;
  padding-top:var(--topbar-h);
  background:var(--night);
  color:var(--white);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{line-height:1.16;font-weight:800;letter-spacing:-.01em;}
h1{font-size:clamp(30px,5.2vw,58px);}
h2{font-size:clamp(22px,3.2vw,36px);}
h3{font-size:clamp(18px,2.2vw,24px);}
p{max-width:40em;}
strong{font-weight:800;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.paper :focus-visible,.section--paper :focus-visible{outline-color:var(--ink);}
::selection{background:var(--lime);color:var(--ink);}

h1,h2,h3,h4,p{overflow-wrap:break-word;}

/* ---------- 4. Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;height:0;z-index:80;}

.skip-link{
  position:absolute;top:-120px;left:10px;z-index:99;
  display:inline-block;padding:10px 18px;
  background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:800;letter-spacing:.04em;
  transition:top var(--speed) var(--ease);
}
.skip-link:focus{top:10px;}

/* 顶栏 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  display:flex;align-items:center;gap:12px;
  padding:0 14px;
  background:rgba(16,19,20,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  z-index:3;
}
.brand{display:flex;align-items:baseline;gap:10px;flex:0 0 auto;min-width:0;}
.brand__mark{
  font-size:16px;font-weight:800;letter-spacing:.02em;color:var(--white);
  padding-left:10px;border-left:3px solid var(--lime);
}
.brand__note{
  font-size:12px;letter-spacing:.08em;color:var(--mist);white-space:nowrap;
}
@media (max-width:1023.98px){.brand__note{display:none;}}

.topbar__pull{
  flex:1 1 auto;min-width:0;
  margin:0;
  padding:0;
  font-size:12.5px;line-height:1.2;letter-spacing:.08em;color:var(--lime);
  text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:opacity 240ms var(--ease),transform 240ms var(--ease);
}
.topbar__pull::before{
  content:"";display:inline-block;width:0;height:0;margin-right:8px;
  vertical-align:middle;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:6px solid var(--lime);
}
.topbar__pull[data-collapsed]{opacity:0;transform:translateY(-10px);}
@media (max-width:519.98px){.topbar__pull{display:none;}}

.utility-link{
  flex:0 0 auto;
  padding:6px 10px;
  border:1px solid var(--line-strong);
  font-size:12px;letter-spacing:.08em;color:var(--mist);
  white-space:nowrap;
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease);
}
.utility-link:hover{color:var(--lime);border-color:var(--lime);}

/* 移动端触发按钮 */
.nav-toggle{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 11px;
  border:1px solid var(--line-strong);
  color:var(--white);font-size:12px;font-weight:700;letter-spacing:.1em;
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease);
}
.nav-toggle__bars{position:relative;width:16px;height:10px;flex:0 0 auto;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:100%;height:1.5px;background:currentColor;
  transition:transform 200ms var(--ease),top 200ms var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{top:8px;}
.nav-toggle:hover{color:var(--lime);border-color:var(--lime);}
.site-header[data-open] .nav-toggle{color:var(--lime);border-color:var(--lime);}
.site-header[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg);}

/* 轨道 / 抽屉 */
.rail{
  position:fixed;
  top:var(--topbar-h);left:0;right:0;
  max-height:calc(100vh - var(--topbar-h));
  overflow:auto;
  z-index:2;
  padding:14px var(--gutter) 22px;
  background:var(--charcoal);
  border-bottom:1px solid var(--line-strong);
  transform:translateY(-10px);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--speed) var(--ease),transform var(--speed) var(--ease),visibility var(--speed);
}
.site-nav{display:block;}
.nav-list{display:grid;gap:2px;}
.nav-list__item{display:block;}
.nav-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px 11px 10px;
  border-left:2px solid transparent;
  color:var(--white);font-size:15px;font-weight:600;
  transition:background var(--speed) var(--ease),border-color var(--speed) var(--ease),color var(--speed) var(--ease);
}
.nav-link__idx{
  font-family:var(--font-num);font-weight:800;font-size:11px;letter-spacing:.08em;
  color:var(--mist);
  transition:color var(--speed) var(--ease);
}
.nav-link__label{display:block;}
.nav-link:hover{background:var(--dark-green);border-left-color:var(--lime-soft);}
.nav-link[aria-current="page"]{
  background:rgba(200,255,61,.09);
  border-left-color:var(--lime);
  color:var(--lime);
}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--lime);}

.rail__tools{
  margin-top:16px;padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.rail__cta{
  display:inline-flex;align-items:center;
  padding:10px 16px;
  background:var(--lime);color:var(--ink);
  font-size:13px;font-weight:800;letter-spacing:.04em;
  transition:background var(--speed) var(--ease),color var(--speed) var(--ease);
}
.rail__cta:hover{background:var(--lime-soft);}
.rail__meta{
  font-family:var(--font-num);
  font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--mist);
  text-transform:uppercase;white-space:nowrap;
}

/* 滚动进度 */
.scroll-meter{
  position:fixed;top:var(--topbar-h);left:0;right:0;height:2px;
  background:rgba(247,250,248,.08);
  pointer-events:none;z-index:4;
}
.scroll-meter__fill{
  display:block;width:100%;height:100%;
  background:var(--lime);
  transform-origin:0 50%;
  transform:scaleX(var(--scroll-p,0));
}

/* 返回顶部 */
.to-top{
  position:fixed;right:16px;bottom:18px;z-index:5;
  width:48px;height:52px;
  display:flex;align-items:center;justify-content:center;
  padding:6px;
  background:var(--charcoal);color:var(--lime);
  border:1px solid var(--line-strong);
  font-size:11px;font-weight:700;line-height:1.15;letter-spacing:.06em;text-align:center;
  opacity:0;visibility:hidden;transform:translateY(12px);
  pointer-events:none;
  transition:opacity 220ms var(--ease),transform 260ms var(--ease),background var(--speed) var(--ease),color var(--speed) var(--ease),visibility 220ms;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none;pointer-events:auto;}
.to-top:hover{background:var(--lime);color:var(--ink);}

/* ---------- 5. Footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,104px);
  background:var(--charcoal);
  border-top:1px solid var(--line-strong);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;width:112px;height:3px;background:var(--lime);
}
.footer__grid{
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(34px,5vw,60px) var(--gutter) 32px;
  display:grid;gap:clamp(26px,3.6vw,48px);
  grid-template-columns:1fr;
}
.footer__board{border-left:2px solid var(--dark-green);padding-left:16px;}
.footer__brand{font-size:20px;font-weight:800;letter-spacing:.02em;color:var(--white);}
.footer__tag{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--mist);max-width:26em;}
.footer__season{
  margin-top:16px;display:inline-flex;align-items:baseline;gap:10px;
  padding:8px 12px;
  border:1px solid var(--line);
  background:rgba(11,32,24,.6);
}
.footer__season-key{font-size:11px;letter-spacing:.16em;color:var(--mist);}
.footer__season-val{
  font-family:var(--font-num);font-weight:900;font-size:32px;line-height:1;
  letter-spacing:-.02em;color:var(--score);
  font-variant-numeric:tabular-nums;
}

.footer__nav{display:grid;grid-template-columns:1fr 1fr;gap:clamp(18px,3vw,36px);}
.footer__group{min-width:0;}
.footer__group-title{
  font-size:11px;font-weight:800;letter-spacing:.18em;color:var(--lime);
  text-transform:uppercase;margin-bottom:12px;
}
.footer__list{display:grid;gap:9px;}
.footer__link{
  font-size:14px;color:var(--white);
  border-bottom:1px solid transparent;
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease);
}
.footer__link:hover{color:var(--lime);border-bottom-color:var(--lime);}
.footer__list--contact{gap:11px;}
.footer__item{
  display:grid;grid-template-columns:auto 1fr;gap:10px;
  font-size:13px;line-height:1.6;color:var(--mist);
}
.footer__key{
  font-size:11px;font-weight:800;letter-spacing:.14em;color:var(--white);
  padding-top:4px;white-space:nowrap;
}
.footer__bottom{
  max-width:var(--maxw);margin:0 auto;
  padding:16px var(--gutter) 30px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 26px;
  font-size:12px;letter-spacing:.06em;color:var(--mist);
}
.footer__legal,.footer__fine{margin:0;max-width:none;}

/* ---------- 6. Layout ---------- */
.site-main{display:block;}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.section{padding:clamp(42px,7vw,92px) 0;}
.section--tight{padding:clamp(24px,4vw,52px) 0;}
.section--charcoal{background:var(--charcoal);}
.section--paper{
  background:var(--paper);color:var(--ink);
  border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);
}
.section--paper h1,.section--paper h2,.section--paper h3,.section--paper h4{color:var(--ink);}
.grain{position:relative;}
.grain::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(rgba(247,250,248,.85) .5px,transparent .6px);
  background-size:3px 3px;
}
.rule{height:1px;border:0;background:var(--line);margin:0;}
.section--paper .rule{background:var(--ink-line);}

.section-head{margin-bottom:clamp(20px,3vw,36px);}
.eyebrow{
  display:inline-block;margin-bottom:10px;
  font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--mist);
}
.section--paper .eyebrow{color:rgba(27,30,28,.55);}

.grid{display:grid;gap:clamp(14px,2.2vw,26px);grid-template-columns:1fr;}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,22px);}
.col-5{grid-column:1 / -1;}
.col-7{grid-column:1 / -1;}

/* ---------- 7. Components ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 0;
  font-size:12px;letter-spacing:.08em;color:var(--mist);
}
.breadcrumbs a{transition:color var(--speed) var(--ease);}
.breadcrumbs a:hover{color:var(--lime);}
.breadcrumbs__sep{color:var(--line-strong);}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;
  border:1px solid var(--line-strong);
  background:transparent;color:var(--white);
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease),background var(--speed) var(--ease);
}
.btn:hover{color:var(--lime);border-color:var(--lime);}
.btn--solid{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.btn--solid:hover{background:var(--lime-soft);border-color:var(--lime-soft);color:var(--ink);}
.btn--ghost{border-color:transparent;padding-left:0;padding-right:0;color:var(--lime);}
.btn--ghost:hover{border-color:transparent;color:var(--lime-soft);}

.panel{
  background:var(--dark-green);
  border:1px solid var(--line);
  padding:clamp(16px,2.2vw,26px);
}
.panel--paper{
  background:var(--paper);color:var(--ink);
  border:1px solid var(--rule);
}

.sheet{
  position:relative;
  background:var(--paper);color:var(--ink);
  border:1px solid var(--rule);
  padding:clamp(18px,2.6vw,32px);
  margin-bottom:10px;
}
.sheet::before{
  content:"";position:absolute;left:6px;right:6px;bottom:-6px;height:6px;
  background:var(--paper);
  border:1px solid var(--rule);border-top:0;
}
.sheet__title{
  font-weight:800;letter-spacing:-.01em;
  text-shadow:1px 1px 0 rgba(27,30,28,.14);
}

.score-num{
  font-family:var(--font-num);font-weight:900;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;line-height:.92;
  color:var(--score);
}

.stats{display:flex;flex-wrap:wrap;gap:clamp(14px,2.4vw,30px);}
.stat{display:flex;flex-direction:column;gap:2px;min-width:60px;}
.stat__label{
  font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--mist);
}
.stat__value{
  font-family:var(--font-num);font-weight:900;
  font-size:clamp(24px,3vw,36px);line-height:1;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  color:var(--score);
}
.section--paper .stat__label,.panel--paper .stat__label{color:rgba(27,30,28,.6);}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;
  border:1px solid var(--rule);color:var(--mist);
  font-size:12px;letter-spacing:.1em;
}
.tag--lime{border-color:var(--lime);color:var(--lime);}
.tag--warn{border-color:var(--warn);color:var(--warn);}
.section--paper .tag{border-color:var(--ink-line);color:rgba(27,30,28,.7);}

/* ---------- 8. Media ---------- */
.media{
  position:relative;display:block;width:100%;
  aspect-ratio:16 / 9;overflow:hidden;
  background:var(--dark-green);
  border:1px solid var(--line);
}
.media--wide{aspect-ratio:21 / 9;}
.media--tall{aspect-ratio:3 / 4;}
.media--square{aspect-ratio:1 / 1;}
.media > img,.media > svg{width:100%;height:100%;object-fit:cover;}
.media--ph::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(135deg,rgba(200,255,61,.10) 0 1px,transparent 1px 15px),
    linear-gradient(155deg,var(--dark-green),var(--night));
}
.media__stamp{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:4px 9px;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-num);font-weight:800;font-size:12px;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
}
.media__cap{
  position:absolute;right:0;bottom:0;z-index:2;max-width:70%;
  padding:4px 10px;
  background:rgba(11,32,24,.86);color:var(--white);
  font-size:11.5px;letter-spacing:.06em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.section--paper .media{border-color:var(--rule);}

/* ---------- 9. Motion ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 380ms var(--ease),transform 380ms var(--ease);}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 10. Responsive ---------- */
@media (max-width:1023.98px){
  .site-header[data-open] .rail{opacity:1;transform:none;visibility:visible;}
}
@media (min-width:600px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer__grid{grid-template-columns:1fr 1fr;}
  .footer__board{grid-column:1 / -1;}
}
@media (min-width:768px){
  .col-5{grid-column:span 5;}
  .col-7{grid-column:span 7;}
}
@media (min-width:1024px){
  body{padding-left:var(--rail-w);}
  .topbar{padding-left:22px;padding-right:26px;gap:18px;}
  .topbar__pull{font-size:13px;}

  .rail{
    top:var(--topbar-h);left:0;right:auto;bottom:0;
    width:var(--rail-w);max-height:none;overflow:visible;
    display:flex;flex-direction:column;
    padding:18px 0 84px;
    background:var(--charcoal);
    border-bottom:0;border-right:1px solid var(--line);
    transform:none;opacity:1;visibility:visible;
  }
  .site-nav{flex:1 1 auto;}
  .nav-list{gap:0;}
  .nav-link{
    flex-direction:column;align-items:center;gap:4px;
    padding:12px 6px;
    border-left:0;border-right:2px solid transparent;
    font-size:13px;font-weight:700;letter-spacing:.02em;text-align:center;
  }
  .nav-link__idx{font-size:10px;letter-spacing:.1em;}
  .nav-link__label{text-align:center;}
  .nav-link:hover{background:var(--dark-green);border-left-color:transparent;border-right-color:var(--lime-soft);}
  .nav-link[aria-current="page"]{background:rgba(200,255,61,.09);border-left-color:transparent;border-right-color:var(--lime);}

  .rail__tools{
    margin-top:auto;
    flex-direction:column;align-items:stretch;gap:10px;
    padding:14px 10px 0;
  }
  .rail__cta{justify-content:center;padding:11px 6px;font-size:12px;text-align:center;}
  .rail__meta{text-align:center;}

  .nav-toggle{display:none;}

  .scroll-meter{
    top:var(--topbar-h);bottom:0;left:calc(var(--rail-w) - 2px);right:auto;
    width:2px;height:auto;
  }
  .scroll-meter__fill{
    width:100%;height:100%;
    transform-origin:50% 0;
    transform:scaleY(var(--scroll-p,0));
  }

  .to-top{
    left:20px;right:auto;bottom:18px;
    width:48px;height:56px;
  }

  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
  .footer__grid{grid-template-columns:1.15fr 1.5fr 1.1fr;align-items:start;}
  .footer__board{grid-column:auto;}
}
@media (min-width:1280px){
  :root{--rail-w:96px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none;}
  .topbar__pull[data-collapsed]{opacity:0;}
}