/* =========================================================================
   安博体育的方式 · 共享样式 /assets/site.css
   夜间球场 × 数据终端：深蓝黑底、蓝图网格、玻璃层与实色层并置
   ========================================================================= */

/* 1. 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;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{width:100%;border-collapse:collapse}
hr{border:0}

/* 2. TOKENS -------------------------------------------------------------- */
:root{
  --ink-900:#05070E;
  --ink-800:#0B1220;
  --glass:#101B2E;
  --line:#1E2A42;
  --muted:#8A98B4;
  --text:#E8EEF9;
  --signal:#B9F24A;
  --aqua:#35E0C6;
  --orange:#FF7A2F;
  --violet:#6C7CFF;
  --paper:#F5F7FB;
  --on-signal:#08131A;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC",system-ui,sans-serif;
  --font-data:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;

  --radius-s:5px;
  --radius-m:10px;
  --radius-l:18px;

  --container:1240px;
  --gutter:clamp(18px,4.6vw,56px);
  --bar-h:64px;
  --rail-h:50px;
  --header-h:calc(var(--bar-h) + var(--rail-h));
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* 3. BASE ---------------------------------------------------------------- */
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 80% -10%, rgba(53,224,198,.10), transparent 62%),
    radial-gradient(880px 520px at 4% 10%, rgba(108,124,255,.09), transparent 60%),
    linear-gradient(rgba(30,42,66,.40) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,42,66,.40) 1px, transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  background-attachment:fixed,fixed,fixed,fixed;
  overflow-x:hidden;
}
::selection{background:var(--signal);color:var(--on-signal)}
:focus-visible{outline:2px solid var(--aqua);outline-offset:3px;border-radius:2px}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.012em;
  color:var(--text);
}
h1{font-size:clamp(38px,7vw,84px);font-weight:300}
h2{font-size:clamp(26px,3.6vw,44px);font-weight:700}
h3{font-size:clamp(20px,2.2vw,26px);font-weight:700}
h4{font-size:20px;font-weight:600}
strong,b{font-weight:700;color:#FFFFFF}
small{font-size:13px;color:var(--muted)}
code,kbd,.mono{font-family:var(--font-data);font-variant-numeric:tabular-nums}

#main-content{display:block;scroll-margin-top:var(--header-h)}

/* 4. LAYOUT HELPERS ------------------------------------------------------ */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.page-main{padding-top:var(--header-h)}
.page-main--overlay{padding-top:0}
.section{padding-block:clamp(40px,6vw,84px)}
.prose{max-width:72ch}
.prose p+p{margin-top:1.05em}
.prose h2,.prose h3{margin-top:1.4em;margin-bottom:.5em}
.stack>*+*{margin-top:var(--stack-gap,16px)}
.divider{height:1px;background:var(--line);margin-block:clamp(20px,3vw,36px)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,28px)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--aqua);
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--aqua);opacity:.8}
.index-num{font-family:var(--font-data);font-size:13px;letter-spacing:.08em;color:var(--muted)}
.lead{font-size:clamp(17px,1.6vw,20px);line-height:1.7;color:rgba(232,238,249,.86);max-width:66ch}
.note{font-size:14px;color:var(--muted)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px 28px;padding-bottom:14px;border-bottom:1px solid var(--line);
  margin-bottom:clamp(22px,3vw,40px);
}
.section-head h2{margin:0}

/* 5. SKIP LINK ----------------------------------------------------------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border-radius:var(--radius-s);
  background:var(--signal);color:var(--on-signal);
  font-weight:700;font-size:14px;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}

/* 6. HEADER -------------------------------------------------------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  color:var(--text);
  background-color:transparent;
  background-image:linear-gradient(180deg, rgba(5,7,14,.78), rgba(5,7,14,0));
  border-bottom:1px solid transparent;
  transition:background-color .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}
.site-header[data-state="solid"]{
  background-color:rgba(11,18,32,.94);
  background-image:none;
  border-bottom-color:var(--line);
  box-shadow:0 22px 44px -32px #000;
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
}
.site-header[data-open]{
  background-color:rgba(11,18,32,.98);
  background-image:none;
  border-bottom-color:var(--line);
}

.header-inner{
  max-width:var(--container);margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--bar-h);
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand-mark{
  position:relative;flex:none;
  width:34px;height:34px;border-radius:9px;
  border:1px solid var(--line);
  background:linear-gradient(150deg, rgba(185,242,74,.20), rgba(53,224,198,.10) 55%, rgba(16,27,46,.6));
}
.brand-mark::before{
  content:"";position:absolute;left:8px;right:8px;bottom:8px;height:1px;
  background:rgba(185,242,74,.55);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:9px;
  width:11px;height:11px;margin-left:-5.5px;border-radius:50%;
  background:var(--signal);box-shadow:0 0 14px rgba(185,242,74,.55);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{
  font-family:var(--font-display);font-size:15.5px;font-weight:600;
  letter-spacing:.02em;line-height:1.3;color:var(--text);white-space:nowrap;
}
.brand-sub{
  font-family:var(--font-data);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);line-height:1.5;white-space:nowrap;
}

.primary-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(14px,1.8vw,30px)}
.nav-list a{
  position:relative;display:inline-block;padding:8px 2px;
  font-size:15px;color:rgba(232,238,249,.74);
  transition:color .18s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--aqua);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-list a:hover{color:var(--text)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--text);font-weight:600}
.nav-list a[aria-current="page"]::after{transform:scaleX(1);background:var(--signal)}

.nav-utility{display:none}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}

.link-quiet{
  font-size:14px;color:var(--muted);white-space:nowrap;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.link-quiet:hover{color:var(--text);border-bottom-color:var(--signal)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  height:40px;padding:0 12px;border-radius:var(--radius-s);
  border:1px solid var(--line);background:rgba(16,27,46,.7);
  color:var(--text);font-size:14px;
}
.nav-toggle-bars{position:relative;display:inline-block;width:16px;height:12px}
.nav-toggle-bars::before,
.nav-toggle-bars::after,
.nav-toggle-bars span{
  content:"";position:absolute;left:0;width:16px;height:1.5px;
  background:var(--signal);border-radius:2px;
  transition:transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars span{top:5.25px}
.nav-toggle-bars::after{top:10.5px}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5.25px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars span{opacity:0}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5.25px) rotate(-45deg)}

/* 联赛轨道 */
.league-rail{
  border-top:1px solid rgba(30,42,66,.72);
  background:linear-gradient(90deg, rgba(16,27,46,0), rgba(16,27,46,.42) 22%, rgba(16,27,46,.42) 78%, rgba(16,27,46,0));
}
.rail-track{
  max-width:var(--container);margin-inline:auto;
  height:var(--rail-h);padding-inline:var(--gutter);
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;overscroll-behavior-x:contain;
  scroll-snap-type:x proximity;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rail-track::-webkit-scrollbar{display:none}
.rail-label{
  flex:0 0 auto;padding-right:12px;margin-right:4px;
  border-right:1px solid var(--line);
  font-family:var(--font-data);font-size:10.5px;letter-spacing:.22em;
  color:var(--muted);
}
.rail-chip{
  flex:0 0 auto;scroll-snap-align:start;
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(16,27,46,.62);
  color:var(--muted);font-family:var(--font-data);
  font-size:12.5px;letter-spacing:.06em;
  transition:color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}
.rail-chip:hover{color:var(--text);border-color:rgba(53,224,198,.55)}
.rail-chip.is-active{
  background:var(--signal);border-color:var(--signal);
  color:var(--on-signal);font-weight:700;
}

.header-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(30,42,66,.95);
  pointer-events:none;overflow:hidden;
}
.header-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--signal),var(--aqua));
  transition:width .1s linear;
}
.site-header[data-state="solid"] .header-progress{background:rgba(185,242,74,.16)}

/* 7. BUTTONS & LINKS ----------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--signal{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.btn--signal:hover{background:#CDFB6B;border-color:#CDFB6B}
.btn--ghost{background:rgba(16,27,46,.66);border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--aqua);color:var(--aqua)}
.btn--outline{background:transparent;border-color:rgba(185,242,74,.6);color:var(--signal)}
.btn--outline:hover{background:rgba(185,242,74,.12)}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:500;color:var(--aqua);
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:translateX(4px)}

/* 8. SURFACES ------------------------------------------------------------ */
.glass{
  position:relative;
  border:1px solid var(--line);border-radius:var(--radius-m);
  background:linear-gradient(160deg, rgba(16,27,46,.88), rgba(11,18,32,.72));
  -webkit-backdrop-filter:blur(9px);
  backdrop-filter:blur(9px);
  transition:border-color .2s var(--ease), background-color .2s var(--ease);
}
.glass:hover{border-color:rgba(53,224,198,.42)}
.panel{
  border:1px solid var(--line);border-radius:var(--radius-m);
  background:var(--ink-800);
}
.panel--light{background:var(--paper);border-color:#D9E1EE;color:#0B1220}
.panel--light h1,.panel--light h2,.panel--light h3{color:#0B1220}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-family:var(--font-data);font-size:11.5px;letter-spacing:.1em;
  text-transform:uppercase;
  border:1px solid var(--line);color:var(--muted);
  background:rgba(16,27,46,.6);
}
.tag--signal{border-color:rgba(185,242,74,.55);color:var(--signal);background:rgba(185,242,74,.10)}
.tag--orange{border-color:rgba(255,122,47,.55);color:var(--orange);background:rgba(255,122,47,.10)}
.tag--violet{border-color:rgba(108,124,255,.55);color:var(--violet);background:rgba(108,124,255,.10)}
.tag--aqua{border-color:rgba(53,224,198,.55);color:var(--aqua);background:rgba(53,224,198,.10)}

.stat-value{
  font-family:var(--font-data);font-weight:700;
  font-size:clamp(28px,3.4vw,46px);line-height:1;
  color:var(--text);font-variant-numeric:tabular-nums;
}
.stat-unit{font-family:var(--font-data);font-size:12px;letter-spacing:.12em;color:var(--muted)}

/* 9. MEDIA FRAMES -------------------------------------------------------- */
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--radius-m);
  background:
    linear-gradient(150deg, rgba(16,27,46,.95), rgba(11,18,32,.9)),
    repeating-linear-gradient(45deg, rgba(30,42,66,.5) 0 1px, transparent 1px 12px);
}
.media-frame img{
  display:block;width:100%;height:100%;object-fit:cover;
  position:absolute;inset:0;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg, rgba(255,255,255,.04) 0 1px, transparent 1px 3px);
  opacity:.7;
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x5{aspect-ratio:4/5}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--21x9{aspect-ratio:21/9}
.media-frame__caption{
  position:absolute;left:12px;bottom:10px;z-index:2;
  padding:3px 9px;border-radius:999px;
  background:rgba(5,7,14,.72);color:var(--muted);
  font-family:var(--font-data);font-size:11px;letter-spacing:.08em;
}

/* 10. BREADCRUMBS -------------------------------------------------------- */
.crumbs{margin-block:clamp(18px,2.6vw,28px)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:#2A3A57}
.crumbs a{color:var(--muted);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--aqua)}
.crumbs [aria-current="page"]{color:var(--text)}

/* 11. REVEAL ------------------------------------------------------------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .5s var(--ease), transform .5s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

/* 12. FOOTER ------------------------------------------------------------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(11,18,32,.72), rgba(5,7,14,1) 68%);
  color:var(--muted);
  font-size:14.5px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:
    linear-gradient(90deg, var(--signal) 0 72px, transparent 72px),
    repeating-linear-gradient(90deg, rgba(30,42,66,.95) 0 1px, transparent 1px 72px);
}
.footer-top{
  max-width:var(--container);margin-inline:auto;
  padding:clamp(46px,6vw,82px) var(--gutter) clamp(28px,4vw,44px);
  display:grid;grid-template-columns:minmax(240px,1.15fr) minmax(0,2.4fr);
  gap:clamp(32px,5vw,72px);
}
.footer-brand .brand{margin-bottom:16px}
.footer-tagline{max-width:34ch;color:rgba(138,152,180,.92);margin-bottom:22px}
.footer-contact{display:grid;gap:8px}
.footer-contact li{
  font-family:var(--font-data);font-size:12.5px;letter-spacing:.02em;
  color:rgba(232,238,249,.8);line-height:1.7;
}
.footer-contact-key{
  display:inline-block;min-width:38px;margin-right:10px;
  color:var(--muted);letter-spacing:.14em;
}
.footer-nav{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:clamp(22px,3vw,40px);
}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-data);font-size:11.5px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--text);
}
.footer-col-title::before{
  content:"";display:inline-block;width:14px;height:1px;
  margin-right:8px;vertical-align:middle;background:var(--signal);
}
.footer-links{display:grid;gap:9px}
.footer-links a{
  color:rgba(138,152,180,.95);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.footer-links a:hover{color:var(--text);border-bottom-color:var(--aqua)}

.footer-base{
  max-width:var(--container);margin-inline:auto;
  padding:20px var(--gutter) clamp(28px,4vw,40px);
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;
}
.footer-legal{display:flex;flex-wrap:wrap;gap:12px 20px}
.footer-legal a{
  font-family:var(--font-data);font-size:12.5px;letter-spacing:.04em;
  color:var(--muted);
}
.footer-legal a:hover{color:var(--aqua)}
.footer-meta,.footer-icp{
  font-family:var(--font-data);font-size:12.5px;letter-spacing:.04em;color:var(--muted);
}
.footer-meta{margin-left:auto}

/* 13. TABLET / MOBILE ---------------------------------------------------- */
@media (max-width:1100px){
  .link-quiet--desk{display:none}
}
@media (min-width:901px){
  :root{--bar-h:80px;--rail-h:56px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    padding:14px var(--gutter) 26px;
    background:rgba(11,18,32,.985);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 60px -40px #000;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease);
  }
  .site-header[data-open] .primary-nav{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid rgba(30,42,66,.7)}
  .nav-list a{display:block;padding:15px 2px 15px 14px;font-size:17px}
  .nav-list a::after{display:none}
  .nav-list a::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
    background:var(--signal);transform:scaleY(0);transform-origin:top;
    transition:transform .2s var(--ease);
  }
  .nav-list a[aria-current="page"]::before{transform:scaleY(1)}
  .nav-utility{
    display:flex;flex-direction:column;gap:4px;
    margin-top:16px;padding-top:16px;
    border-top:1px dashed rgba(30,42,66,.95);
  }
  .nav-utility .link-quiet{font-size:15px;padding:6px 0}
  .brand-sub{display:none}
}
@media (max-width:620px){
  .header-actions .btn{padding:9px 14px;font-size:14px}
  .footer-top{grid-template-columns:1fr}
  .footer-base{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-meta{margin-left:0}
}

/* 14. REDUCED MOTION ----------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
}