/* ============================================================
   必一体育赛事 — 共享外壳样式表 /assets/site.css
   深墨绿底 + 荧光青交互 + 暖橙比分高亮 + 青灰精密网格
   ============================================================ */

:root{
  color-scheme: dark;

  --bx-ink:#08261F;
  --bx-ink-deep:#061D18;
  --bx-layer:#0F3A2E;
  --bx-cyan:#2FE3B4;
  --bx-line:#1E4A3F;
  --bx-orange:#FF8A3D;
  --bx-paper:#F3EFE6;
  --bx-gray:#7E8C86;
  --bx-moss:#4B7A5E;
  --bx-clay:#B4552F;
  --bx-mint:#E8F5F0;
  --bx-dim:#B9CCC5;

  --bx-max:1360px;
  --bx-nav-h:72px;

  --bx-font-sans: system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bx-font-mono: ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --bx-r-pill:999px;
  --bx-r-panel:8px;
  --bx-r-sharp:2px;

  --bx-ease:cubic-bezier(.22,.61,.36,1);
  --bx-progress:0%;
  --bx-shadow-nav:0 20px 44px -26px rgba(0,0,0,.8);
}

/* ---------- reset ---------- */
*,*::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,dl,dd,ul,ol,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,picture{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
table{border-collapse:collapse;border-spacing:0}
hr{border:0;border-top:1px solid var(--bx-line);margin:0}
dl,dd{margin:0}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background:var(--bx-ink);
  color:var(--bx-mint);
  font-family:var(--bx-font-sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:clip;
}
body[data-drawer-open]{overflow:hidden}

h1,h2,h3,h4,h5{font-weight:800;line-height:1.18;letter-spacing:-.01em;color:var(--bx-mint)}
h1{font-size:clamp(30px,4.6vw,44px)}
h2{font-size:clamp(24px,3.2vw,32px)}
h3{font-size:clamp(19px,2.2vw,24px)}
h4{font-size:17px;line-height:1.4}
strong,b{font-weight:700;color:#fff}
small{font-size:12.5px}
a{color:var(--bx-cyan);text-underline-offset:3px}
a:hover{color:#6BF2CE}
::selection{background:rgba(47,227,180,.26);color:#fff}

:focus-visible{outline:2px solid var(--bx-cyan);outline-offset:3px}
:focus:not(:focus-visible){outline:none}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  left:clamp(12px,3vw,32px);
  top:-90px;
  z-index:200;
  display:inline-block;
  padding:11px 20px;
  background:var(--bx-cyan);
  color:#04211A;
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  text-decoration:none;
  border-radius:var(--bx-r-sharp);
  box-shadow:var(--bx-shadow-nav);
  transition:top .2s var(--bx-ease);
}
.skip-link:focus{top:12px;color:#04211A}

/* ---------- layout utilities ---------- */
.container{
  width:100%;
  max-width:var(--bx-max);
  margin-inline:auto;
  padding-inline:clamp(16px,3vw,32px);
}
.container--narrow{max-width:960px}
.container--text{max-width:760px}

.section{padding-block:clamp(48px,7vw,96px)}
.section + .section{border-top:1px solid var(--bx-line)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,24px)}
.grid-12 > *{min-width:0}

.stack > * + *{margin-top:var(--bx-stack,16px)}
.stack--lg{--bx-stack:32px}

.rule{border-top:1px solid var(--bx-line);width:100%}
.muted{color:var(--bx-gray)}
.lead{font-size:clamp(17px,1.6vw,19px);line-height:1.65;color:var(--bx-dim)}
.num,.bx-num{font-family:var(--bx-font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.on-paper{background:var(--bx-paper);color:#0B211B}
.on-paper h1,.on-paper h2,.on-paper h3,.on-paper h4{color:#0B211B}
.on-paper .muted{color:#5C6A64}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid transparent;
  border-radius:var(--bx-r-sharp);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s var(--bx-ease),color .18s var(--bx-ease),
             border-color .18s var(--bx-ease),transform .18s var(--bx-ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--bx-cyan);color:#04211A;border-color:var(--bx-cyan)}
.btn--primary:hover{background:#5BF0C9;border-color:#5BF0C9;color:#04211A}
.btn--outline{background:transparent;color:var(--bx-cyan);border-color:rgba(47,227,180,.5)}
.btn--outline:hover{background:rgba(47,227,180,.1);border-color:var(--bx-cyan)}
.btn--ghost{background:transparent;color:var(--bx-mint);border-color:var(--bx-line)}
.btn--ghost:hover{border-color:var(--bx-cyan);color:var(--bx-cyan)}
.btn--warm{background:var(--bx-orange);color:#2A1204;border-color:var(--bx-orange)}
.btn--warm:hover{background:#FFA367;border-color:#FFA367;color:#2A1204}
.btn--sm{padding:9px 15px;font-size:13px}
.btn--block{width:100%}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 9px;
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-sharp);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  line-height:1;
  color:var(--bx-gray);
  background:transparent;
}
.tag--cyan{color:var(--bx-cyan);border-color:rgba(47,227,180,.4)}
.tag--moss{color:#9FD0B4;border-color:rgba(75,122,94,.65);background:rgba(75,122,94,.14)}
.tag--clay{color:#E8A27C;border-color:rgba(180,85,47,.55);background:rgba(180,85,47,.12)}
.tag--warm{color:var(--bx-orange);border-color:rgba(255,138,61,.45)}

/* ---------- chapter ---------- */
.chapter-head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(12px,2vw,28px);
  align-items:start;
  padding-bottom:20px;
  border-bottom:1px solid var(--bx-line);
}
.chapter-num{
  font-family:var(--bx-font-mono);
  font-size:clamp(30px,4.6vw,52px);
  font-weight:700;
  line-height:.9;
  letter-spacing:-.04em;
  color:rgba(47,227,180,.22);
  -webkit-text-stroke:1px rgba(47,227,180,.5);
}
.chapter-title{font-size:clamp(20px,2.4vw,26px);font-weight:800;padding-top:4px}
.chapter-body{margin-top:24px}

/* ---------- stats ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{
  font-family:var(--bx-font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--bx-cyan);
}
.stat-value--warm{color:var(--bx-orange)}
.stat-label{
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--bx-gray);
}

/* ---------- card / panel ---------- */
.card{
  background:var(--bx-layer);
  border:1px solid var(--bx-line);
  padding:clamp(16px,2vw,24px);
  border-radius:var(--bx-r-sharp);
}
.card--plain{background:transparent}
.panel{
  border:1px solid var(--bx-line);
  background:var(--bx-layer);
  border-radius:var(--bx-r-sharp);
}
.panel-handle{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  width:100%;
  padding:14px 16px;
  border-radius:var(--bx-r-panel);
  font-size:15px;
  font-weight:700;
  color:var(--bx-mint);
  text-align:left;
}
.panel-body{padding:0 16px 16px}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:20px 0 0;
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--bx-gray);
}
.breadcrumb a{color:var(--bx-gray);text-decoration:none}
.breadcrumb a:hover{color:var(--bx-cyan)}
.breadcrumb-sep{color:var(--bx-line);font-family:var(--bx-font-mono)}

/* ---------- media frame ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  width:100%;
  aspect-ratio:16/9;
  background:var(--bx-layer);
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-sharp);
}
.media-frame img,
.media-frame svg{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.74) contrast(1.04);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(232,245,240,.05) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(232,245,240,.05) 0 1px,transparent 1px 48px);
  opacity:.5;
}
.media-frame__cap{
  position:absolute;
  left:0;
  bottom:0;
  max-width:100%;
  padding:8px 12px;
  background:rgba(6,29,24,.82);
  border-top:1px solid var(--bx-line);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--bx-dim);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding:14px clamp(12px,3vw,32px) 0;
  transition:padding .24s var(--bx-ease);
}
.site-header[data-scrolled]{padding-top:8px}

.header-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  max-width:var(--bx-max);
  height:var(--bx-nav-h);
  margin-inline:auto;
  padding:0 clamp(14px,2vw,24px);
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-pill);
  background:rgba(8,38,31,.86);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--bx-shadow-nav);
  transition:height .24s var(--bx-ease),background-color .24s var(--bx-ease),border-color .24s var(--bx-ease);
}
.site-header[data-scrolled] .header-inner{
  height:56px;
  background:rgba(8,38,31,.95);
  border-color:rgba(47,227,180,.3);
}

/* brand */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
  color:var(--bx-mint);
  text-decoration:none;
}
.brand:hover{color:var(--bx-mint)}
.brand-mark{
  flex:none;
  width:26px;
  height:26px;
  background:var(--bx-cyan);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.06}
.brand-name{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-tag{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--bx-cyan);
  white-space:nowrap;
}

/* nav capsule */
.nav-capsule{
  min-width:0;
  justify-self:center;
  border-radius:var(--bx-r-pill);
}
.nav-list{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:2px;
  flex-wrap:nowrap;
}
.nav-link{
  display:block;
  padding:9px 12px;
  border-radius:var(--bx-r-pill);
  font-size:14px;
  font-weight:600;
  color:var(--bx-mint);
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s var(--bx-ease),background-color .18s var(--bx-ease);
}
.nav-link:hover{color:var(--bx-cyan);background:rgba(47,227,180,.09)}
.nav-link[aria-current="page"]{
  color:#04211A;
  background:var(--bx-cyan);
  font-weight:800;
}

.nav-aside{display:none}

/* header actions */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  justify-self:end;
}
.header-cta{
  border-radius:var(--bx-r-pill);
  color:var(--bx-mint);
}
.header-cta:hover{color:var(--bx-cyan)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-pill);
  color:var(--bx-mint);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  transition:border-color .18s var(--bx-ease),color .18s var(--bx-ease);
}
.nav-toggle:hover{border-color:var(--bx-cyan);color:var(--bx-cyan)}
.nav-toggle-bars{
  position:relative;
  flex:none;
  width:16px;
  height:12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--bx-ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

/* scroll progress */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  z-index:100;
  display:block;
  width:var(--bx-progress,0%);
  height:2px;
  background:var(--bx-cyan);
  pointer-events:none;
  transition:width .08s linear;
}

/* ============================================================
   MOBILE DRAWER
   ============================================================ */
@media (max-width:1080px){
  .brand-tag{display:none}
  .nav-toggle{display:inline-flex}
  .header-cta{display:none}

  .nav-capsule{
    position:fixed;
    z-index:1;
    top:0;
    right:0;
    bottom:0;
    width:min(380px,86vw);
    max-width:none;
    justify-self:stretch;
    display:flex;
    flex-direction:column;
    padding:calc(var(--bx-nav-h) + 28px) 0 96px;
    background:rgba(8,38,31,.985);
    border-left:1px solid var(--bx-line);
    overflow-y:auto;
    transform:translate3d(102%,0,0);
    transition:transform .3s var(--bx-ease);
    box-shadow:-24px 0 60px -32px rgba(0,0,0,.9);
  }
  .nav-capsule[data-open]{transform:translate3d(0,0,0)}

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:0 20px;
  }
  .nav-list li + li{border-top:1px solid rgba(30,74,63,.7)}
  .nav-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:15px 10px;
    border-radius:var(--bx-r-panel);
    font-size:16px;
    font-weight:700;
    background:transparent;
  }
  .nav-link::after{
    content:"";
    width:7px;
    height:7px;
    border-top:1px solid var(--bx-gray);
    border-right:1px solid var(--bx-gray);
    transform:rotate(45deg);
    opacity:.7;
    flex:none;
  }
  .nav-link:hover{background:rgba(47,227,180,.08)}
  .nav-link[aria-current="page"]{
    background:rgba(47,227,180,.12);
    color:var(--bx-cyan);
    box-shadow:inset 2px 0 0 var(--bx-cyan);
  }
  .nav-link[aria-current="page"]::after{border-color:var(--bx-cyan)}

  .nav-aside{
    display:block;
    margin-top:auto;
    padding:24px 20px 0;
    border-top:1px solid var(--bx-line);
  }
  .nav-aside-title{
    margin-bottom:10px;
    font-size:11px;
    font-weight:700;
    letter-spacing:.2em;
    text-transform:uppercase;
    color:var(--bx-cyan);
  }
  .nav-aside a{
    display:block;
    padding:7px 0;
    font-size:14px;
    color:var(--bx-dim);
    text-decoration:none;
  }
  .nav-aside a:hover{color:var(--bx-cyan)}
  .to-top-inline{
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-top:16px;
    padding:10px 16px;
    border:1px solid var(--bx-line);
    border-radius:var(--bx-r-pill);
    font-size:13px;
    font-weight:700;
    color:var(--bx-mint);
    transition:border-color .18s var(--bx-ease),color .18s var(--bx-ease);
  }
  .to-top-inline:hover{border-color:var(--bx-cyan);color:var(--bx-cyan)}

  .to-top{display:none}
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--bx-ink-deep);
  border-top:1px solid var(--bx-line);
  color:var(--bx-mint);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(30,74,63,.55) 1px,transparent 1px),
    linear-gradient(180deg,rgba(30,74,63,.55) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.34;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 82%);
}
.footer-inner{
  position:relative;
  z-index:1;
  max-width:var(--bx-max);
  margin-inline:auto;
  padding:clamp(48px,6vw,80px) clamp(16px,3vw,32px) 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(240px,1.5fr) repeat(4,minmax(0,1fr));
  gap:clamp(28px,3vw,44px);
}
.footer-brand-link{color:var(--bx-mint)}
.footer-note{
  margin-top:18px;
  max-width:34ch;
  font-size:13.5px;
  line-height:1.75;
  color:var(--bx-dim);
}
.footer-meta{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:8px 14px;
  margin-top:20px;
  font-size:13px;
}
.footer-meta dt{
  color:var(--bx-gray);
  letter-spacing:.06em;
  white-space:nowrap;
}
.footer-meta dd{
  color:var(--bx-dim);
  word-break:break-word;
}
.footer-meta dd:first-of-type{font-family:var(--bx-font-mono);font-size:12.5px}

.footer-col-title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--bx-cyan);
}
.footer-col-title::before{
  content:"";
  flex:none;
  width:1px;
  height:12px;
  background:var(--bx-cyan);
}
.footer-links li + li{margin-top:2px}
.footer-links a{
  display:block;
  padding:5px 0;
  font-size:14px;
  line-height:1.5;
  color:var(--bx-dim);
  text-decoration:none;
  transition:color .18s var(--bx-ease),padding-left .18s var(--bx-ease);
}
.footer-links a:hover{color:var(--bx-cyan);padding-left:4px}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px 32px;
  margin-top:clamp(36px,4vw,56px);
  padding-top:24px;
  border-top:1px solid var(--bx-line);
  font-size:12.5px;
  line-height:1.7;
  color:var(--bx-gray);
}
.footer-legal{max-width:62ch}
.footer-copy{
  font-family:var(--bx-font-mono);
  font-size:12px;
  letter-spacing:.02em;
  white-space:nowrap;
}
.footer-icp{color:var(--bx-gray)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  border:1px solid var(--bx-line);
  border-radius:var(--bx-r-sharp);
  background:var(--bx-layer);
  color:var(--bx-cyan);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .22s var(--bx-ease),transform .22s var(--bx-ease),visibility .22s,background-color .18s var(--bx-ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:#144638;border-color:var(--bx-cyan)}
.to-top-icon{
  display:block;
  width:9px;
  height:9px;
  border-left:2px solid currentColor;
  border-top:2px solid currentColor;
  transform:rotate(45deg) translate(1px,1px);
}

/* ---------- reveal ---------- */
[data-reveal]{opacity:1;transform:none}
html.js [data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .26s var(--bx-ease),transform .26s var(--bx-ease);
}
html.js [data-reveal][data-revealed]{opacity:1;transform:none}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1120px){
  .nav-link{padding:9px 10px;font-size:13.5px}
}

@media (max-width:1024px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .footer-brand{grid-column:1 / -1}
  .footer-note{max-width:48ch}
}

@media (max-width:900px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .section + .section{border-top:1px solid var(--bx-line)}
}

@media (max-width:640px){
  :root{--bx-nav-h:62px}
  body{font-size:15px}
  .header-inner{border-radius:var(--bx-r-pill)}
  .brand-mark{width:22px;height:22px}
  .brand-name{font-size:15px}
  .nav-toggle{padding:8px 12px}
  .nav-toggle-label{display:none}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-base{flex-direction:column;align-items:flex-start}
  .footer-copy{white-space:normal}
  .chapter-head{grid-template-columns:minmax(0,1fr);gap:8px}
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover{transform:none}
  .to-top{transform:none}
  html.js [data-reveal]{opacity:1;transform:none}
}