/* ==========================================================================
   博业体育 · 共享样式 /assets/site.css
   1 变量  2 重置  3 中文排版  4 通用组件  5 头部  6 页脚  7 响应式与动效
   ========================================================================== */

/* 1. 变量 */
:root{
  --night:#0B2B24;
  --deep:#061A16;
  --panel:#123F34;
  --lime:#C8FF3D;
  --sand:#E8C48A;
  --paper:#F4F1E8;
  --cyan:#5DE0D4;
  --alert:#FF7A4D;
  --muted:#9DB5AA;

  --ink:#0B2B24;
  --line:rgba(157,181,170,.26);
  --line-soft:rgba(157,181,170,.13);
  --lime-line:rgba(200,255,61,.42);

  --font-display:"Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1320px;
  --gutter:clamp(1rem,4vw,4rem);
  --header-h:76px;
  --radius:3px;
  --shadow-panel:0 22px 0 -12px rgba(6,26,22,.6);
  --shadow-paper:7px 7px 0 rgba(6,26,22,.55);
  --ease:cubic-bezier(.22,.7,.25,1);
}

/* 2. 重置 */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--night);
  background-image:
    linear-gradient(to right,rgba(157,181,170,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(157,181,170,.05) 1px,transparent 1px),
    radial-gradient(120% 60% at 14% 0%,rgba(93,224,212,.10),transparent 62%),
    radial-gradient(90% 50% at 92% 2%,rgba(200,255,61,.06),transparent 58%);
  background-size:72px 72px,72px 72px,auto,auto;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(.95rem,.9rem + .2vw,1.0625rem);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
a{color:var(--cyan);text-underline-offset:.25em}
a:hover{color:var(--lime)}
[hidden]{display:none !important}
::selection{background:var(--lime);color:var(--deep)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}
.paper-card :focus-visible,.media-frame--paper :focus-visible{outline-color:var(--night)}

/* 3. 中文排版 */
h1,h2,h3,h4{
  margin:0 0 .55em;
  font-family:var(--font-display);
  font-weight:300;
  line-height:1.06;
  letter-spacing:.005em;
  text-wrap:balance;
}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.8rem,4vw,3rem)}
h3{font-size:clamp(1.2rem,2.2vw,1.6rem);font-weight:500}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1em;padding-left:1.15rem}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em}
hr{border:0;height:1px;background:var(--line);margin:0}
strong{font-weight:600;color:var(--paper)}

/* 4. 通用组件 */
.container,.page-shell{
  width:min(var(--wrap),100% - var(--gutter));
  margin-inline:auto;
}
.page-shell{padding-block:clamp(1.5rem,4vw,3rem) clamp(2.5rem,6vw,5rem)}
.section{padding-block:clamp(2.5rem,6vw,5rem)}
.section--tight{padding-block:clamp(1.25rem,3vw,2.25rem)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:clamp(1.25rem,3vw,2.25rem);
}
.section-index,.index-label{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  margin:0 0 .9rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--muted);
}
.section-index::before,.index-label::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--sand);
}
.section-title{
  margin:0;
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(1.9rem,4.4vw,3.4rem);
  line-height:1.02;
}
.lede{max-width:56ch;color:rgba(244,241,232,.86);font-size:1.02rem}
.prose{max-width:64ch}
.prose h2,.prose h3{margin-top:1.8em}
.prose p{margin:0 0 1.05em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.2rem}
.prose li{margin-bottom:.4em}
.prose a{color:var(--cyan)}
.divider{height:1px;background:var(--line);border:0;margin:0}

.stack{display:flex;flex-direction:column;gap:clamp(.9rem,2vw,1.4rem)}
.stack-panel{
  position:relative;
  padding:clamp(1.15rem,3vw,2rem);
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-panel);
}
.paper-card{
  padding:clamp(1.15rem,3vw,2rem);
  background:var(--paper);
  color:var(--ink);
  border:1px solid rgba(11,43,36,.18);
  border-radius:var(--radius);
  box-shadow:var(--shadow-paper);
}
.paper-card h2,.paper-card h3{color:var(--ink)}
.paper-card a{color:var(--night);text-decoration-color:rgba(11,43,36,.4)}
.paper-card a:hover{color:#123F34}

.grid{display:grid;gap:clamp(1rem,2.4vw,1.9rem)}
.grid--split{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
.grid--data{grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr))}
.grid--tight{gap:.7rem}
.span-full{grid-column:1 / -1}

.btn{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  padding:.82rem 1.35rem;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:.92rem;
  font-weight:600;
  letter-spacing:.03em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .16s var(--ease),background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--lime{background:var(--lime);color:var(--deep)}
.btn--lime:hover{background:#d8ff6b;color:var(--deep)}
.btn--paper{background:var(--paper);color:var(--deep)}
.btn--paper:hover{background:#fffdf4;color:var(--deep)}
.btn--line{background:transparent;color:var(--paper);border-color:rgba(244,241,232,.35)}
.btn--line:hover{border-color:var(--lime);color:var(--lime)}
.btn--small{padding:.5rem .85rem;font-size:.8rem}
.btn--go::after{content:"→";font-family:var(--font-mono);font-size:.95em}

.breadcrumb{margin:0 0 clamp(1rem,2.5vw,1.75rem)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.12em;
}
.breadcrumb-list > li + li::before{content:"/";margin-right:.5rem;color:rgba(157,181,170,.55)}
.breadcrumb-link{color:var(--muted);text-decoration:none}
.breadcrumb-link:hover{color:var(--lime)}
.breadcrumb-current{color:var(--sand)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.2rem .5rem;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sand);
}
.tag--lime{border-color:rgba(200,255,61,.5);color:var(--lime)}
.tag--sand{background:rgba(232,196,138,.14);border-color:rgba(232,196,138,.45);color:var(--sand)}
.tag--alert{border-color:rgba(255,122,77,.5);color:var(--alert)}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-strip{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(min(100%,140px),1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.stat{padding:1rem 1.1rem;background:var(--deep)}
.stat-label{
  display:block;
  margin-bottom:.35rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.stat-value{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.45rem,3vw,2rem);
  line-height:1.1;
  color:var(--lime);
}
.stat--sand .stat-value{color:var(--sand)}
.stat--negative .stat-value{color:var(--alert)}

.data-table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.data-table caption{
  margin-bottom:.6rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  text-align:left;
}
.data-table th,.data-table td{padding:.7rem .8rem;text-align:left;border-bottom:1px solid var(--line-soft)}
.data-table thead th{
  font-family:var(--font-mono);
  font-size:.66rem;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--sand);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.data-table td.num,.data-table th.num{font-family:var(--font-mono);text-align:right}
.data-table tbody tr:hover{background:rgba(200,255,61,.06)}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
}
.media-frame::after{
  content:"";
  position:absolute;
  top:9px;
  left:9px;
  width:11px;
  height:11px;
  border-top:1px solid var(--sand);
  border-left:1px solid var(--sand);
  pointer-events:none;
}
.media-frame img,.media-frame > svg{width:100%;height:100%;object-fit:cover;object-position:center}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--paper{background:#e7e1d1;border-color:rgba(11,43,36,.2)}
.media-frame--paper::after{border-color:rgba(11,43,36,.45)}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  max-width:100%;
  padding:.45rem .7rem;
  background:rgba(6,26,22,.86);
  color:var(--sand);
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.1em;
}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.filter-btn{
  padding:.48rem .8rem;
  background:transparent;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(244,241,232,.78);
  cursor:pointer;
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.filter-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.filter-btn[aria-pressed="true"]{background:var(--lime);border-color:var(--lime);color:var(--deep)}
.filter-note{margin:0;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--muted)}
.filter-note .num{color:var(--sand)}

/* 5. 头部 */
.skip-link{
  position:fixed;
  top:.5rem;
  left:.5rem;
  z-index:200;
  padding:.7rem 1rem;
  background:var(--lime);
  color:var(--deep);
  font-weight:600;
  text-decoration:none;
  border-radius:2px;
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:var(--deep)}
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(11,43,36,.985),rgba(6,26,22,.96));
  border-bottom:1px solid var(--line);
}
.header-frame{
  width:min(var(--wrap),100% - var(--gutter));
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:clamp(1rem,3vw,2.5rem);
  padding-inline:clamp(.5rem,2vw,1.25rem);
  border-inline:1px solid var(--line-soft);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  flex:0 0 auto;
  color:var(--paper);
  text-decoration:none;
}
.brand:hover{color:var(--paper)}
.brand-mark{
  position:relative;
  display:block;
  width:34px;
  height:34px;
  border:1px solid var(--lime-line);
  background-color:rgba(200,255,61,.06);
  background-image:
    linear-gradient(var(--lime),var(--lime)),
    linear-gradient(var(--lime),var(--lime)),
    linear-gradient(var(--lime),var(--lime));
  background-repeat:no-repeat;
  background-size:3px 36%,3px 58%,3px 80%;
  background-position:22% 100%,50% 100%,78% 100%;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:2px;
  background:var(--sand);
  opacity:.62;
}
.brand-text{display:flex;flex-direction:column;gap:.2rem;line-height:1}
.brand-name{font-family:var(--font-display);font-size:1.16rem;font-weight:600;letter-spacing:.14em}
.brand-tag{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.22em;color:var(--sand)}
.site-nav{margin-left:auto}
.nav-eyebrow{display:none;margin:0}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(.1rem,.8vw,.5rem);
  margin:0;
  padding:0;
  list-style:none;
  counter-reset:nav;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:.6rem .55rem .7rem;
  font-size:.86rem;
  letter-spacing:.05em;
  color:rgba(244,241,232,.8);
  text-decoration:none;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link::before{
  counter-increment:nav;
  content:counter(nav,decimal-leading-zero);
  margin-right:.45em;
  font-family:var(--font-mono);
  font-size:.56rem;
  letter-spacing:.06em;
  color:var(--muted);
  vertical-align:.18em;
}
.nav-link:hover{color:var(--paper);background-color:rgba(200,255,61,.07)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:.55rem;
  right:.55rem;
  bottom:.28rem;
  height:3px;
  background:var(--lime);
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  margin-left:auto;
  padding:.55rem .7rem;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius);
  color:var(--paper);
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-box{position:relative;display:block;width:20px;height:14px}
.nav-toggle-box::before,
.nav-toggle-box::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle-box::before{top:0}
.nav-toggle-box::after{top:12px}
.nav-toggle-line{
  position:absolute;
  top:6px;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-line{opacity:0;transform:scaleX(.3)}
.nav-toggle[aria-expanded="true"] .nav-toggle-box::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-box::after{transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-text{font-family:var(--font-mono);font-size:.64rem;letter-spacing:.2em;text-transform:uppercase}
.nav-scrim{display:none;position:fixed;inset:0;z-index:65;background:rgba(6,26,22,.74)}
.nav-scrim[data-open="true"]{display:block}
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(157,181,170,.14);
}
.scroll-progress-bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  transition:width .12s linear;
}

/* 6. 页脚 */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,7vw,6rem);
  padding-block:clamp(2.5rem,5vw,4rem) 1.4rem;
  background:linear-gradient(180deg,var(--deep),#040f0c);
  color:rgba(244,241,232,.8);
  border-top:1px solid rgba(232,196,138,.28);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:6px;
  background:repeating-linear-gradient(90deg,rgba(232,196,138,.55) 0 18px,transparent 18px 36px);
}
.footer-frame{
  width:min(var(--wrap),100% - var(--gutter));
  margin-inline:auto;
  padding-inline:clamp(.5rem,2vw,1.25rem);
  border-inline:1px solid var(--line-soft);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr repeat(3,minmax(0,1fr));
  gap:clamp(1.5rem,4vw,3rem);
  padding-bottom:clamp(1.5rem,4vw,2.5rem);
  border-bottom:1px solid var(--line);
}
.brand--footer .brand-mark{width:30px;height:30px}
.brand--footer .brand-name{font-size:1.05rem}
.footer-note{
  max-width:30ch;
  margin:1rem 0 0;
  font-size:.82rem;
  line-height:1.7;
  color:var(--muted);
}
.footer-col-title{
  margin:0 0 .9rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--sand);
}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.55rem}
.footer-link{
  font-size:.88rem;
  color:rgba(244,241,232,.78);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{color:var(--lime);border-bottom-color:rgba(200,255,61,.4)}
.footer-contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:1rem 2rem;
  padding-block:1.4rem;
  border-bottom:1px solid var(--line);
}
.footer-contact-row{display:flex;flex-direction:column;gap:.3rem;margin:0}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.footer-contact-value{
  font-family:var(--font-mono);
  font-size:.86rem;
  color:var(--paper);
  overflow-wrap:anywhere;
}
.footer-contact-value--text{font-family:var(--font-body);font-size:.9rem;line-height:1.6}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:.6rem 1rem;
  padding-top:1.2rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--muted);
}
.footer-legal,.footer-copy{margin:0}

/* 7. 响应式与动效 */
@media (max-width:1040px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  html.nav-open{overflow:hidden}
  .header-frame{min-height:66px;gap:.75rem;padding-inline:.75rem}
  .site-nav{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(86vw,340px);
    margin:0;
    padding:calc(66px + 1.25rem) 1.25rem 2rem;
    display:flex;
    flex-direction:column;
    gap:1rem;
    overflow-y:auto;
    z-index:70;
    background:linear-gradient(180deg,var(--panel),var(--deep));
    border-left:1px solid var(--lime-line);
    box-shadow:-30px 0 70px rgba(0,0,0,.5);
    transform:translateX(103%);
    transition:transform .34s var(--ease);
  }
  .site-nav[data-open="true"]{transform:translateX(0)}
  .nav-eyebrow{
    display:flex;
    justify-content:space-between;
    padding-bottom:.75rem;
    border-bottom:1px solid var(--line);
    font-family:var(--font-mono);
    font-size:.62rem;
    letter-spacing:.24em;
    text-transform:uppercase;
    color:var(--sand);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0;counter-reset:nav}
  .nav-link{
    display:flex;
    align-items:baseline;
    padding:.95rem .25rem;
    font-size:1rem;
    color:rgba(244,241,232,.88);
    border-bottom:1px solid var(--line-soft);
  }
  .nav-link:hover{background-color:transparent;color:var(--lime)}
  .nav-link[aria-current="page"]{padding-left:.85rem}
  .nav-link[aria-current="page"]::after{
    left:0;
    right:auto;
    top:.6rem;
    bottom:.6rem;
    width:3px;
    height:auto;
  }
  .nav-toggle{display:inline-flex;position:relative;z-index:80}
  .grid--split{grid-template-columns:1fr}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:1.75rem}
  .footer-contact{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:.4rem}
  .nav-toggle-text{display:none}
  .brand-name{font-size:1.05rem}
  .brand-tag{font-size:.56rem}
  .data-table th,.data-table td{padding:.6rem .5rem}
}
@media (min-width:901px){
  .nav-scrim{display:none !important}
  .site-nav[data-open="true"]{transform:none}
}
html.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}
html.js [data-reveal].is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html.js [data-reveal]{opacity:1 !important;transform:none !important}
  .btn:hover{transform:none}
}