/* ==========================================================================
   华体育看台 · 共享外壳样式 /assets/site.css
   1 tokens · 2 reset · 3 排版与容器 · 4 栅格 · 5 通用组件
   6 头部 · 7 页脚 · 8 动效 · 9 响应式与偏好
   ========================================================================== */

/* ---------- 1. tokens ---------- */
:root{
  --base-900:#061713;
  --layer-800:#0C2A23;
  --line-700:#164A3D;
  --signal-400:#42F5D1;
  --mist-200:#9BF3E2;
  --round-500:#E8B14A;
  --archive-050:#EAF2EE;
  --index-600:#4E6B63;
  --revise-600:#B4472F;
  --focus-300:#7DFFE3;

  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Source Han Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1280px;
  --gutter:clamp(16px,4vw,56px);
  --head-h:72px;
  --dock-h:66px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--base-900);
  background-image:repeating-linear-gradient(to bottom,rgba(66,245,209,.035) 0 1px,transparent 1px 6px);
  background-attachment:fixed;
  color:var(--archive-050);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p,figure,dl,dd{margin:0;}
button{border:0;background:none;color:inherit;font:inherit;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--focus-300);outline-offset:3px;}
::selection{background:var(--signal-400);color:#04140f;}

/* ---------- 3. 排版与容器 ---------- */
.main{position:relative;z-index:1;display:block;}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);}
.section{padding-block:clamp(40px,6vw,96px);}
.section--tight{padding-block:clamp(26px,4vw,56px);}
.section--layer{background:var(--layer-800);border-block:1px solid var(--line-700);}
.section--paper{background:var(--archive-050);color:var(--base-900);}
.section--paper .muted,.section--paper .note,.section--paper .panel__meta{color:var(--index-600);}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--signal-400);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;}

.display{font-family:var(--font-display);font-weight:700;font-size:clamp(34px,7.4vw,84px);line-height:1.04;letter-spacing:-.012em;}
.h2{font-family:var(--font-display);font-weight:700;font-size:clamp(23px,3.4vw,40px);line-height:1.18;letter-spacing:.01em;}
.h3{font-family:var(--font-display);font-weight:700;font-size:clamp(18px,2vw,24px);line-height:1.3;letter-spacing:.02em;}
.lede{font-size:clamp(15.5px,1.4vw,18px);line-height:1.85;color:var(--mist-200);max-width:62ch;}
.body-text{max-width:62ch;font-size:16px;line-height:1.78;}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.muted{color:var(--index-600);}
.rule{height:1px;background:var(--line-700);border:0;margin:0;}
.rule--accent{background:linear-gradient(90deg,var(--signal-400),rgba(66,245,209,0));}

/* ---------- 4. 栅格 ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid--aside{grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(20px,3.4vw,48px);}
.stack{display:grid;gap:clamp(12px,1.6vw,20px);}

/* ---------- 5. 通用组件 ---------- */
.panel{position:relative;background:var(--layer-800);border:1px solid var(--line-700);padding:clamp(18px,2.4vw,28px);}
.panel--paper{background:var(--archive-050);color:var(--base-900);border-color:#C9D8D2;}
.panel__head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line-700);}
.panel--paper .panel__head{border-color:#C9D8D2;}
.panel__title{font-family:var(--font-display);font-size:19px;font-weight:700;letter-spacing:.02em;}
.panel__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--index-600);text-transform:uppercase;}
.panel__body{margin-top:16px;font-size:15px;line-height:1.78;color:var(--mist-200);}
.panel--paper .panel__body{color:#22322D;}

.band{position:relative;background:var(--layer-800);border-block:1px solid var(--line-700);overflow-x:auto;overflow-y:hidden;}
.band__track{position:relative;display:flex;align-items:flex-end;gap:clamp(18px,3vw,44px);min-width:max-content;padding:22px var(--gutter) 28px;}
.band__item{display:flex;flex-direction:column;gap:4px;min-width:92px;}
.band__tick{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--index-600);}
.band__round{font-family:var(--font-mono);font-size:clamp(24px,3vw,34px);line-height:1;color:var(--archive-050);letter-spacing:-.03em;}
.band__item[data-state="current"] .band__tick{color:var(--signal-400);}
.band__item[data-state="current"] .band__round{color:var(--signal-400);}
.band__item[data-state="next"] .band__tick{color:var(--index-600);}
.band__item[data-state="next"] .band__round{color:var(--round-500);}
.band__line{position:absolute;left:0;bottom:16px;width:100%;height:1px;background:linear-gradient(90deg,var(--signal-400),rgba(22,74,61,.2));transform-origin:left center;transform:scaleX(0);transition:transform .6s ease-out;}
.band.is-in .band__line{transform:scaleX(1);}

.note{position:relative;padding-left:16px;font-size:13.5px;line-height:1.7;color:var(--index-600);}
.note::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--line-700);}
.note__label{display:block;margin-bottom:4px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--mist-200);}

.stat{display:flex;flex-direction:column;gap:6px;padding:14px 0;border-top:1px solid var(--line-700);}
.stat__value{font-family:var(--font-mono);font-size:clamp(28px,3.6vw,44px);line-height:1;letter-spacing:-.03em;color:var(--signal-400);}
.stat__value--amber{color:var(--round-500);}
.stat__label{font-size:12.5px;letter-spacing:.1em;color:var(--index-600);}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line-700);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist-200);}
.tag--signal{border-color:var(--signal-400);color:var(--signal-400);}
.tag--amber{border-color:var(--round-500);color:var(--round-500);}
.tag--revise{border-color:var(--revise-600);color:#E48A73;}

.media{position:relative;display:block;width:100%;overflow:hidden;border:1px solid var(--line-700);background:linear-gradient(155deg,var(--layer-800),var(--base-900));}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(66,245,209,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(66,245,209,.06) 1px,transparent 1px);background-size:34px 34px;}
.media > img{width:100%;height:100%;object-fit:cover;}
.media--wide{aspect-ratio:16/9;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}
.media--banner{aspect-ratio:21/9;}
.media__caption{margin-top:10px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--index-600);}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.08em;color:var(--index-600);}
.breadcrumb a{color:var(--mist-200);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:var(--signal-400);border-bottom-color:var(--signal-400);}
.breadcrumb__sep{color:var(--line-700);}
.breadcrumb [aria-current="page"]{color:var(--round-500);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:42px;padding:10px 20px;
  border:1px solid var(--line-700);background:transparent;color:var(--archive-050);
  font-size:14px;letter-spacing:.06em;white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--signal-400);color:var(--signal-400);}
.btn--signal{border-color:var(--signal-400);color:var(--signal-400);background:rgba(66,245,209,.08);}
.btn--signal:hover{background:var(--signal-400);color:#04140F;}
.btn--amber{border-color:var(--round-500);color:var(--round-500);background:rgba(232,177,74,.08);}
.btn--amber:hover{background:var(--round-500);color:#20160A;}
.btn--ghost{color:var(--mist-200);}
.btn--sm{min-height:36px;padding:7px 14px;font-size:13px;}

/* ---------- 6. 头部 ---------- */
.site-head{position:sticky;top:0;z-index:90;}
.skip-link{
  position:absolute;top:-72px;left:16px;z-index:120;
  display:inline-flex;align-items:center;min-height:40px;padding:8px 16px;
  background:var(--signal-400);color:#04140F;font-size:13.5px;font-weight:600;letter-spacing:.08em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px;}

.cmd-bar{position:relative;background:rgba(6,23,19,.94);border-bottom:1px solid var(--line-700);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);}
.cmd-bar__inner{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  gap:clamp(10px,1.6vw,28px);
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);
  min-height:var(--head-h);
  transition:min-height .25s var(--ease);
}
.cmd-bar[data-condensed] .cmd-bar__inner{min-height:58px;}

.cmd-bar__brand{display:flex;align-items:center;gap:12px;padding-block:8px;}
.brand__mark{
  display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;
  border:1px solid var(--signal-400);color:var(--signal-400);
  font-family:var(--font-display);font-size:17px;line-height:1;
  background:linear-gradient(135deg,rgba(66,245,209,.16),rgba(66,245,209,0) 62%);
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.05em;color:var(--archive-050);}
.brand__line{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--index-600);}

.cmd-nav{justify-self:center;min-width:0;}
.cmd-index{display:flex;align-items:stretch;gap:2px;}
.cmd-index__item{display:flex;}
.cmd-index__link{
  display:flex;align-items:baseline;gap:6px;
  padding:10px 12px;font-size:14px;color:var(--mist-200);
  border:1px solid transparent;border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.cmd-index__link:hover{color:var(--archive-050);border-color:var(--line-700);transform:translateY(-2px);}
.cmd-index__link[aria-current="page"]{color:var(--signal-400);border-bottom-color:var(--signal-400);}
.cmd-index__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--index-600);}
.cmd-index__link:hover .cmd-index__num{color:var(--mist-200);}
.cmd-index__link[aria-current="page"] .cmd-index__num{color:var(--round-500);}
.cmd-index__label{white-space:nowrap;}

.cmd-bar__actions{display:flex;align-items:center;gap:10px;justify-self:end;}
.round-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 10px;border:1px solid var(--line-700);
  font-size:12px;letter-spacing:.06em;
}
.round-chip__k{color:var(--index-600);}
.round-chip__v{font-family:var(--font-mono);color:var(--round-500);letter-spacing:0;}

.nav-toggle{display:none;align-items:center;gap:8px;padding:8px 11px;border:1px solid var(--line-700);color:var(--mist-200);font-size:12px;letter-spacing:.16em;transition:color .18s var(--ease),border-color .18s var(--ease);}
.nav-toggle:hover{border-color:var(--signal-400);color:var(--signal-400);}
.nav-toggle__bars{display:grid;gap:4px;width:18px;}
.nav-toggle__bars span{display:block;height:1px;background:var(--signal-400);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"]{border-color:var(--signal-400);color:var(--signal-400);}
.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);}
.nav-toggle__text{display:inline-block;}

.scroll-meter{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:transparent;overflow:hidden;}
.scroll-meter__fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--signal-400),var(--round-500));transition:width .1s linear;}

.dock{display:none;}

/* ---------- 7. 页脚 ---------- */
.site-foot{position:relative;z-index:1;margin-top:clamp(48px,8vw,120px);background:var(--layer-800);border-top:1px solid var(--line-700);color:var(--archive-050);}
.foot__inner{
  display:grid;grid-template-columns:minmax(240px,1.05fr) 2fr;
  gap:clamp(28px,5vw,64px);
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:clamp(36px,6vw,72px) var(--gutter) clamp(24px,3vw,40px);
}
.foot__lead{display:flex;flex-direction:column;align-items:flex-start;gap:14px;}
.foot__brand{font-family:var(--font-display);font-weight:700;font-size:clamp(22px,3vw,30px);letter-spacing:.06em;}
.foot__summary{max-width:34ch;font-size:15px;line-height:1.8;color:var(--mist-200);}
.foot__stamp{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--index-600);}
.foot__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,40px);}
.foot__col{min-width:0;}
.foot__col-title{padding-bottom:10px;border-bottom:1px solid var(--line-700);font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.24em;text-transform:uppercase;color:var(--index-600);}
.foot__list{display:grid;gap:8px;margin-top:14px;}
.foot__list a{display:inline-block;font-size:14px;color:var(--mist-200);border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);}
.foot__list a:hover{color:var(--signal-400);border-bottom-color:var(--signal-400);}
.foot__list a[aria-current="page"]{color:var(--signal-400);}

.foot__contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px 28px;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:22px var(--gutter);
  border-top:1px solid var(--line-700);
}
.foot__contact-item{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--mist-200);}
.foot__contact-key{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--index-600);}
.foot__contact-val{word-break:break-word;}

.foot__base{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 32px;
  width:100%;max-width:var(--wrap);margin-inline:auto;
  padding:18px var(--gutter) 30px;
  border-top:1px solid var(--line-700);
  font-size:12.5px;line-height:1.7;color:var(--index-600);
}
.foot__note{max-width:62ch;}
.foot__meta{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- 8. 动效 ---------- */
.js-on [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.js-on [data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1180px){
  .cmd-index__link{font-size:13px;padding:9px 9px;}
  .brand__line{display:none;}
}
@media (max-width:1024px){
  body{padding-bottom:calc(var(--dock-h) + 6px);}
  .nav-toggle{display:inline-flex;}
  .cmd-nav{
    position:absolute;left:0;right:0;top:100%;
    justify-self:stretch;background:var(--layer-800);
    border-bottom:1px solid var(--line-700);
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .3s var(--ease),visibility .3s var(--ease);
  }
  .cmd-nav[data-open]{max-height:min(72vh,540px);overflow-y:auto;visibility:visible;}
  .cmd-index{flex-direction:column;padding:10px var(--gutter) 20px;}
  .cmd-index__item{width:100%;}
  .cmd-index__link{width:100%;justify-content:space-between;padding:13px 0;font-size:15px;border-bottom:1px solid var(--line-700);}
  .cmd-index__link:hover{transform:none;border-color:transparent;border-bottom-color:var(--signal-400);}
  .cmd-index__link[aria-current="page"]{border-bottom-color:var(--signal-400);}

  .dock{
    display:grid;grid-template-columns:repeat(4,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:95;
    background:rgba(6,23,19,.97);border-top:1px solid var(--line-700);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  }
  .dock__link{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px 12px;font-size:12.5px;color:var(--mist-200);border-top:2px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease);}
  .dock__link:hover{color:var(--archive-050);}
  .dock__link[aria-current="page"]{color:var(--signal-400);border-top-color:var(--signal-400);}
  .dock__id{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--index-600);}
  .dock__link[aria-current="page"] .dock__id{color:var(--round-500);}

  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--aside{grid-template-columns:minmax(0,1fr);}
  .foot__inner{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:720px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}
  .cmd-bar__actions .round-chip{display:none;}
  .foot__cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot__base{flex-direction:column;}
  .display{font-size:clamp(30px,10vw,52px);}
}
@media (max-width:460px){
  .foot__cols{grid-template-columns:minmax(0,1fr);}
  .cmd-bar__actions .btn--sm{padding:7px 10px;font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .js-on [data-reveal]{opacity:1 !important;transform:none !important;}
  .band__line{transform:scaleX(1) !important;}
}