/* =========================================================
   HG13体育 共享样式表  /assets/site.css
   深夜数据实验室 × 球场灯光
   ========================================================= */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html,body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

/* ---------- tokens ---------- */
:root{
  --pitch-900:#08130F;
  --pitch-800:#0E1E17;
  --panel:#13291F;
  --glass:#1B3A2B;
  --glass-a:rgba(27,58,43,.72);
  --line:#24503A;
  --ink:#E9F3EE;
  --ink-mute:#93A9A0;
  --cyan:#4FE3C1;
  --cyan-dim:rgba(79,227,193,.16);
  --orange:#FF7A2F;
  --blue:#3FB8FF;

  --rail-w:56px;
  --header-h:64px;
  --strip-h:32px;

  --f-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --s1:8px; --s2:16px; --s3:24px; --s4:32px;
  --s5:48px; --s6:64px; --s7:96px;

  --r-sm:2px; --r-md:3px;
  --max-w:1240px;
  --max-w-wide:1560px;
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background-color:var(--pitch-900);
  background-image:
    radial-gradient(120% 80% at 88% -12%, rgba(79,227,193,.10), transparent 62%),
    radial-gradient(90% 62% at -10% 104%, rgba(63,184,255,.07), transparent 66%),
    repeating-linear-gradient(90deg, rgba(36,80,58,.16) 0 1px, transparent 1px 96px);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--f-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
main{display:block}
#main-content{scroll-margin-top:calc(var(--header-h) + var(--strip-h) + 16px)}

/* ---------- typography ---------- */
h1,h2,h3,h4,h5,h6{font-weight:900;line-height:1.12;letter-spacing:-.01em}
h1{font-size:clamp(40px,6vw,64px)}
h2{font-size:clamp(28px,3.6vw,40px)}
h3{font-size:28px;line-height:1.2}
h4{font-size:20px;line-height:1.3;font-weight:800}
p{font-size:16px;line-height:1.75}
small{font-size:14px;color:var(--ink-mute)}

.type-hero{font-size:clamp(48px,9.5vw,96px);line-height:1.02;letter-spacing:-.02em;font-weight:900}
.type-lead{font-size:clamp(18px,2vw,20px);line-height:1.7;color:var(--ink-mute)}
.type-mono{font-family:var(--f-mono);letter-spacing:.02em;font-variant-numeric:tabular-nums}

.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.label{
  font-size:12px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-mute);line-height:1.4;
}
.accent{color:var(--cyan)}
.accent-alt{color:var(--orange)}

/* ---------- focus / motion ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:var(--r-sm)}
.pulse{animation:hg-pulse 1.6s ease-in-out infinite}
@keyframes hg-pulse{0%,100%{opacity:.4}50%{opacity:1}}

.has-js [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

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

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:-120px;left:12px;z-index:300;
  display:inline-block;padding:10px 18px;border-radius:var(--r-sm);
  background:var(--cyan);color:#04120E;font-size:14px;font-weight:800;
  letter-spacing:.04em;transition:top .2s ease;
}
.skip-link:focus{top:12px}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 var(--s3)}
.wrap--wide{max-width:var(--max-w-wide)}
.section{padding:var(--s6) 0}
.section--deep{background:var(--pitch-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--panel{background:var(--panel)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:var(--s3);margin-bottom:var(--s4);
  border-bottom:1px solid var(--line);padding-bottom:var(--s2);
}
.section-head .label{display:block;margin-bottom:var(--s1)}
.hairline{height:1px;background:var(--line);border:0}

/* ---------- grid ---------- */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--s3)}
.grid > *{min-width:0}
.col-2{grid-column:span 2}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid transparent;border-radius:var(--r-sm);
  font-family:var(--f-sans);font-size:14px;font-weight:800;letter-spacing:.04em;
  line-height:1.2;cursor:pointer;background:transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--cyan);color:#04120E;border-color:var(--cyan)}
.btn-primary:hover{background:#82F0D8;border-color:#82F0D8}
.btn-ghost{background:rgba(19,41,31,.6);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-orange{background:var(--orange);color:#1A0A02;border-color:var(--orange)}
.btn-orange:hover{background:#FF9860;border-color:#FF9860}
.btn-block{width:100%}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg, rgba(14,30,23,.94) 0%, rgba(8,19,15,.9) 100%);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.header-inner{
  position:relative;display:flex;align-items:center;gap:var(--s3);
  min-height:var(--header-h);max-width:var(--max-w-wide);
  margin:0 auto;padding:0 var(--s3);
}
.brand{position:relative;z-index:70;display:flex;align-items:center;gap:12px;flex:0 0 auto;padding:6px 0}
.brand-mark{
  font-family:var(--f-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  background:var(--cyan);color:#04120E;padding:7px 9px;border-radius:var(--r-sm);line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-line{font-size:16px;font-weight:900;letter-spacing:.02em;color:var(--ink)}
.brand-sub{font-size:12px;letter-spacing:.14em;color:var(--ink-mute);text-transform:uppercase}

.primary-nav{position:relative;z-index:50;flex:1 1 auto;display:flex;align-items:center;justify-content:flex-end}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  display:block;padding:12px;font-size:14px;font-weight:600;letter-spacing:.06em;
  color:var(--ink-mute);border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.nav-link:hover{color:var(--ink);border-bottom-color:var(--line)}
.nav-link[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.nav-foot{display:none}

.header-actions{position:relative;z-index:70;display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(19,41,31,.6);color:var(--ink);cursor:pointer;
  font-size:12px;font-weight:700;letter-spacing:.14em;
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bars span{display:block;height:2px;background:var(--cyan);transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg)}

/* ---------- data strip ---------- */
.data-strip{
  display:flex;align-items:center;gap:var(--s3);
  height:var(--strip-h);padding:0 var(--s3);
  border-top:1px solid var(--line);
  background:rgba(19,41,31,.62);
  overflow-x:auto;overflow-y:hidden;white-space:nowrap;
  scrollbar-width:none;
}
.data-strip::-webkit-scrollbar{display:none}
.data-chip{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;font-size:12px}
.data-chip .mono{font-size:12px;color:var(--ink)}
.data-chip .label{color:var(--ink-mute)}
.data-chip--accent .mono{color:var(--orange)}
.data-chip--accent .label{color:var(--orange)}

/* ---------- left rail ---------- */
.rail{
  display:none;position:fixed;left:0;top:0;bottom:0;width:var(--rail-w);z-index:40;
  flex-direction:column;align-items:center;justify-content:space-between;
  padding:var(--s2) 0;
  background:linear-gradient(180deg, rgba(27,58,43,.55) 0%, rgba(8,19,15,.9) 100%);
  border-right:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.rail-top,.rail-bottom{display:flex;flex-direction:column;align-items:center;gap:10px}
.rail-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 12px rgba(79,227,193,.8)}
.rail-code{font-size:11px;letter-spacing:.14em;color:var(--ink-mute);writing-mode:vertical-rl;text-orientation:mixed}
.rail-track{position:absolute;top:0;right:0;bottom:0;width:2px;background:rgba(36,80,58,.5)}
.rail-progress{display:block;width:100%;height:0;background:linear-gradient(180deg,var(--cyan) 0%,var(--blue) 100%)}
.rail-word{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-size:12px;font-weight:700;letter-spacing:.4em;color:var(--ink-mute);
  transform:rotate(180deg);
}
.rail-tick{width:8px;height:1px;background:var(--line)}
.rail-link{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;
  color:var(--ink-mute);writing-mode:vertical-rl;text-orientation:mixed;
}
.rail-link:hover{color:var(--cyan)}

/* ---------- cards ---------- */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:var(--s3);
}
.card--glass{
  background:var(--glass-a);border-color:rgba(79,227,193,.14);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.card-head{
  display:flex;align-items:center;justify-content:space-between;gap:var(--s2);
  margin-bottom:var(--s2);padding-bottom:12px;border-bottom:1px solid var(--line);
}
.card-title{font-size:20px;font-weight:800;line-height:1.3}
.card-meta{font-family:var(--f-mono);font-size:12px;color:var(--ink-mute);letter-spacing:.08em}

/* ---------- stats ---------- */
.stat{display:flex;flex-direction:column;gap:6px}
.stat-value{font-family:var(--f-mono);font-size:40px;font-weight:700;line-height:1;color:var(--cyan);letter-spacing:.02em}
.stat-value--alt{color:var(--orange)}
.stat-label{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-mute)}

/* ---------- tags / tabs / segmented ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);border-radius:999px;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;color:var(--ink-mute);
  background:rgba(19,41,31,.5);
}
.tag--cyan{border-color:rgba(79,227,193,.5);color:var(--cyan);background:var(--cyan-dim)}
.tag--orange{border-color:rgba(255,122,47,.5);color:var(--orange);background:rgba(255,122,47,.12)}

.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--s3)}
.tab{
  padding:9px 16px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(19,41,31,.5);color:var(--ink-mute);
  font-size:13px;font-weight:700;letter-spacing:.08em;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.tab:hover{color:var(--ink);border-color:var(--cyan)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:#04120E}
.tab-panel{animation:hg-fade .24s ease both}
@keyframes hg-fade{from{opacity:0}to{opacity:1}}

.segmented{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border:1px solid var(--line);border-radius:var(--r-sm);background:rgba(19,41,31,.5)}
.seg{
  padding:7px 14px;border:0;border-radius:var(--r-sm);background:transparent;
  color:var(--ink-mute);font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;
  cursor:pointer;transition:background-color .18s ease,color .18s ease;
}
.seg:hover{color:var(--ink)}
.seg[aria-selected="true"]{background:var(--glass);color:var(--cyan)}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:var(--s2) 0;
  font-family:var(--f-mono);font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-mute);
}
.breadcrumb li{display:flex;align-items:center;gap:10px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--ink-mute)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ---------- prose ---------- */
.prose{max-width:68ch}
.prose > * + *{margin-top:var(--s2)}
.prose h2{font-size:28px;margin-top:var(--s5);padding-top:var(--s3);border-top:1px solid var(--line)}
.prose h3{font-size:20px;font-weight:800;margin-top:var(--s4)}
.prose p{color:#D5E4DC}
.prose ul,.prose ol{padding-left:1.2em}
.prose ul li{list-style:none;position:relative;padding-left:18px;margin-top:10px;color:#D5E4DC}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--cyan)}
.prose ol{counter-reset:hg}
.prose ol li{list-style:none;counter-increment:hg;position:relative;padding-left:32px;margin-top:10px;color:#D5E4DC}
.prose ol li::before{
  content:counter(hg,decimal-leading-zero);position:absolute;left:0;top:.35em;
  font-family:var(--f-mono);font-size:12px;color:var(--cyan);letter-spacing:.08em;
}
.prose blockquote{
  border-left:2px solid var(--cyan);padding:var(--s2) var(--s3);
  background:rgba(19,41,31,.6);color:var(--ink-mute);
}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(79,227,193,.4)}
.prose a:hover{border-bottom-color:var(--cyan)}

/* ---------- media frames（页面阶段放图用） ---------- */
.media{
  position:relative;overflow:hidden;border-radius:var(--r-md);
  border:1px solid var(--line);aspect-ratio:16 / 9;
  background:
    radial-gradient(80% 70% at 30% 20%, rgba(79,227,193,.14), transparent 60%),
    linear-gradient(140deg, var(--panel) 0%, var(--pitch-800) 100%);
}
.media img,.media video{width:100%;height:100%;object-fit:cover;display:block}
.media--wide{aspect-ratio:21 / 9}
.media--macro{aspect-ratio:4 / 5}
.media--square{aspect-ratio:1 / 1}
.media-overlay{
  position:absolute;inset:auto 0 0 0;padding:var(--s3);
  background:linear-gradient(0deg, rgba(8,19,15,.94) 0%, rgba(8,19,15,0) 100%);
}
.media-lines::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(36,80,58,.35) 0 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36,80,58,.35) 0 1px, transparent 1px);
  background-size:25% 25%;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;margin-top:var(--s7);
  background:var(--pitch-800);border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;width:140px;height:1px;background:var(--cyan);
}
.footer-inner{
  display:grid;grid-template-columns:1.3fr 2fr 1.5fr;gap:var(--s5);
  max-width:var(--max-w);margin:0 auto;padding:var(--s6) var(--s3) var(--s5);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer-brand .brand-line{font-size:20px}
.footer-closing{
  font-size:16px;color:var(--ink-mute);line-height:1.7;
  padding-left:12px;border-left:2px solid var(--cyan);
}
.footer-brand .btn{margin-top:var(--s2)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s3)}
.footer-col-title{
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-mute);margin-bottom:var(--s2);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:#C6D8D0;transition:color .18s ease}
.footer-links a:hover{color:var(--cyan)}
.footer-contact{display:flex;flex-direction:column;gap:8px}
.footer-contact-line{font-size:14px;color:#C6D8D0;line-height:1.7}
.footer-contact-line.mono{font-size:13px;color:var(--ink)}
.footer-note{font-size:12px;line-height:1.7;color:var(--ink-mute)}
.footer-more{
  align-self:flex-start;margin-top:6px;font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--cyan);border-bottom:1px solid rgba(79,227,193,.4);
}
.footer-more:hover{border-bottom-color:var(--cyan)}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s2);
  max-width:var(--max-w);margin:0 auto;padding:18px var(--s3) 28px;
  border-top:1px solid var(--line);
  font-size:12px;color:var(--ink-mute);
}
.footer-base p{font-size:12px;color:var(--ink-mute);letter-spacing:.06em}

/* ---------- responsive : tablet ---------- */
@media (max-width:1180px){
  .header-actions .btn-ghost{display:none}
}

@media (max-width:1024px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:var(--s4)}
  .footer-contact{grid-column:1 / -1}
}

/* ---------- responsive : desktop rail & frame ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .rail{display:flex}
}

/* ---------- responsive : mobile ---------- */
@media (max-width:960px){
  .wrap,.footer-inner,.footer-base{padding-left:20px;padding-right:20px}
  .section{padding:var(--s6) 0}
  .grid{grid-template-columns:repeat(4,1fr);gap:var(--s2)}
  .col-2,.col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 4}
  .col-12{grid-column:span 4}

  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}

  .primary-nav{
    position:fixed;left:0;right:0;top:0;z-index:50;
    display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;
    max-height:100vh;overflow-y:auto;
    padding:calc(var(--header-h) + var(--strip-h) + 20px) 20px 32px;
    background:rgba(8,19,15,.97);
    border-bottom:1px solid var(--line);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
    transform:translateY(-100%);opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .32s ease,opacity .24s ease,visibility .32s ease;
  }
  .primary-nav[data-open]{
    transform:translateY(0);opacity:1;visibility:visible;pointer-events:auto;
  }
  .nav-list{flex-direction:column;align-items:stretch;width:100%;gap:0}
  .nav-link{
    font-size:20px;font-weight:800;padding:16px 2px;color:var(--ink);
    border-bottom:1px solid var(--line);border-left:3px solid transparent;
  }
  .nav-link[aria-current="page"]{
    color:var(--cyan);border-bottom-color:var(--line);border-left-color:var(--cyan);
    padding-left:14px;
  }
  .nav-foot{display:flex;flex-direction:column;gap:12px;width:100%;margin-top:var(--s3)}

  html.nav-open,html.nav-open body{overflow:hidden}

  .footer-inner{grid-template-columns:1fr;gap:var(--s4);padding-top:var(--s5)}
  .footer-cols{grid-template-columns:1fr 1fr;gap:var(--s3)}
  .footer-base{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (max-width:520px){
  .brand-sub{display:none}
  .footer-cols{grid-template-columns:1fr}
  .stat-value{font-size:28px}
}