/* ==========================================================================
   欧巴体育主站 · /assets/site.css
   共享层：reset / 设计令牌 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,address{margin:0;font-style:normal}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:var(--ink-900)}

/* ---------- design tokens ---------- */
:root{
  --ink-900:#061A13;
  --ink-800:#0C2A20;
  --ink-700:#123326;
  --line:#24463A;
  --paper:#F2EAD8;
  --paper-ink:#17251D;
  --lime:#B8FF3B;
  --lime-soft:#CFFF6B;
  --orange:#FF8A3D;
  --text:#E8F1E9;
  --muted:#A9BDB2;
  --lg-blue:#5F8FB3;
  --lg-purple:#8F7BB3;
  --lg-red:#C96B5F;
  --lg-teal:#4FB3A5;

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

  --maxw:1280px;
  --gutter:32px;
  --rule:1px solid var(--line);
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- base typography ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    linear-gradient(to right,rgba(36,70,58,.22) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(36,70,58,.22) 1px,transparent 1px);
  background-size:72px 72px;
  background-position:-1px -1px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.06;
  letter-spacing:.005em;
  color:var(--text);
  text-wrap:balance;
}

#main-content{display:block;min-height:1px}

/* ---------- focus & a11y ---------- */
:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
}

.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:999;
  display:inline-block;
  padding:11px 18px;
  background:var(--lime);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:10px}

/* ---------- utilities ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-width:880px}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;flex:none}

.lede{
  max-width:34em;
  font-size:clamp(16px,1.4vw,18px);
  line-height:1.85;
  color:var(--muted);
}

.rule{height:0;border:0;border-top:var(--rule);margin:0}

.panel{
  background:var(--ink-800);
  border:var(--rule);
}

.paper-block{
  background:var(--paper);
  color:var(--paper-ink);
  border:1px solid var(--paper);
  padding:clamp(24px,4vw,56px);
}
.paper-block h2,.paper-block h3,.paper-block h4{color:var(--paper-ink)}
.paper-block a{color:var(--paper-ink);text-decoration:underline;text-underline-offset:3px}
.paper-block a:hover{color:#3E6A4E}

.tag{
  display:inline-block;
  padding:3px 9px;
  border:var(--rule);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}

/* ---------- grid ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:9px 16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.06em;
  line-height:1.4;
  color:var(--text);
  background:transparent;
  border:1px solid var(--line);
  cursor:pointer;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{border-color:var(--lime);color:var(--lime)}
.btn--lime{background:var(--lime);border-color:var(--lime);color:var(--ink-900);font-weight:700}
.btn--lime:hover{background:var(--lime-soft);border-color:var(--lime-soft);color:var(--ink-900)}
.btn--ghost:hover{background:rgba(184,255,59,.08);color:var(--lime)}
.btn--orange{background:var(--orange);border-color:var(--orange);color:#20100A;font-weight:700}
.btn--orange:hover{background:#FFA468;border-color:#FFA468;color:#20100A}
.btn--block{display:flex;width:100%}

/* ---------- media containers ---------- */
.media{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:var(--ink-800);
  border:var(--rule);
}
.media img{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(6,26,19,.32) 0 1px,transparent 1px 4px);
  opacity:.4;
}
.media--wide{aspect-ratio:21 / 9}
.media--square{aspect-ratio:1 / 1}
.media--portrait{aspect-ratio:3 / 4}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.6;
  color:var(--muted);
}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:18px 0 0}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--line)}
.breadcrumb-list a{transition:color .18s var(--ease)}
.breadcrumb-list a:hover{color:var(--lime)}
.breadcrumb-list [aria-current="page"]{color:var(--text)}

/* ---------- reveal protocol ---------- */
[data-reveal="pending"]{opacity:0;transform:translateY(16px)}
[data-reveal="in"]{
  opacity:1;
  transform:none;
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  --mh-pad:20px;
  --brand-size:34px;
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(6,26,19,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:var(--rule);
}

/* 顶部信号条 */
.header-ticker{
  max-height:40px;
  overflow:hidden;
  background:var(--ink-800);
  border-bottom:var(--rule);
  transition:max-height .26s var(--ease),opacity .2s var(--ease),border-color .2s;
}
.header-ticker-inner{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:34px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  overflow:hidden;
}
.ticker-signal{
  flex:none;
  width:7px;height:7px;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(184,255,59,.14);
  animation:ticker-pulse 2.6s ease-in-out infinite;
}
.ticker-label{flex:none;color:var(--lime);font-weight:700;letter-spacing:.16em}
.ticker-sep{flex:none;color:var(--line)}
.ticker-text{
  min-width:0;
  color:var(--text);
  letter-spacing:.05em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.ticker-meta{
  flex:none;
  margin-left:auto;
  color:var(--muted);
  white-space:nowrap;
}
@keyframes ticker-pulse{
  0%,100%{opacity:1}
  50%{opacity:.32}
}
.site-header[data-condensed] .header-ticker{
  max-height:0;
  opacity:0;
  border-bottom-color:transparent;
}

/* 刊头 */
.masthead{padding-block:var(--mh-pad);transition:padding .24s var(--ease)}
.masthead-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.masthead-side{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.13em;
  color:var(--muted);
  min-width:0;
}
.masthead-side--start{flex-direction:column;align-items:flex-start;gap:2px;justify-self:start}
.masthead-side--end{justify-self:end;flex-wrap:wrap;justify-content:flex-end}
.masthead-meta{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}

.brand{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  justify-self:center;
  color:var(--text);
}
.brand-name{
  font-family:var(--font-display);
  font-size:var(--brand-size,30px);
  font-weight:800;
  line-height:1;
  letter-spacing:.05em;
  transition:color .18s var(--ease);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.brand:hover .brand-name{color:var(--lime)}

/* 栏目行 */
.nav-bar{
  position:relative;
  background:rgba(12,42,32,.62);
  border-top:var(--rule);
}
.nav-bar-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:12px;
  min-height:54px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.nav-bar-inner > .nav-toggle{grid-column:1;justify-self:start}
.nav-bar-inner > .main-nav{grid-column:2;justify-self:center}
.nav-bar-inner > .nav-rail-link{grid-column:3;justify-self:end}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:7px 12px;
  border:var(--rule);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--text);
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:14px;height:11px;
  flex:none;
}
.nav-toggle-bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(4.75px) 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(-4.75px) rotate(-45deg)}

.main-nav{min-width:0}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:clamp(10px,2.2vw,32px);
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 2px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:600;
  letter-spacing:.13em;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:2px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--lime)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-rail-link{
  position:relative;
  padding-bottom:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--orange);
  white-space:nowrap;
  border-bottom:1px solid transparent;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-rail-link::before{content:"◆";font-size:8px;margin-right:6px;vertical-align:1px}
.nav-rail-link:hover{border-bottom-color:var(--orange);color:#FFA468}

/* 滚动进度 */
.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  will-change:transform;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,96px);
  background:var(--ink-800);
  border-top:var(--rule);
  color:var(--text);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:100%;height:2px;
  background:linear-gradient(
    90deg,
    var(--lime) 0 14%,
    var(--orange) 14% 24%,
    var(--line) 24% 100%
  );
}
.footer-inner{
  display:grid;
  grid-template-columns:1.5fr .85fr 1.45fr .85fr;
  gap:clamp(24px,3vw,44px);
  align-items:start;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(40px,5vw,64px) var(--gutter) clamp(24px,3vw,38px);
}
.footer-col{min-width:0}
.footer-head{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--lime);
}
.footer-head::before{content:"";flex:none;width:16px;height:1px;background:currentColor}

.brand--footer{align-items:flex-start;gap:4px}
.brand--footer .brand-name{font-size:24px}
.footer-tagline{
  margin-top:16px;
  max-width:24em;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

.footer-links li+li{margin-top:10px}
.footer-links a{
  position:relative;
  display:inline-block;
  font-size:14px;
  line-height:1.6;
  color:var(--muted);
  transition:color .18s var(--ease);
}
.footer-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:-2px;
  width:100%;height:1px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.footer-links a:hover{color:var(--text)}
.footer-links a:hover::after{transform:scaleX(1)}

.footer-contact p{
  font-size:13.5px;
  line-height:1.95;
  color:var(--muted);
  overflow-wrap:anywhere;
}
.footer-key{
  display:inline-block;
  min-width:3.4em;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--lg-teal);
}
.footer-note{
  margin-top:14px;
  max-width:30em;
  padding-left:11px;
  border-left:2px solid var(--orange);
  font-size:12px;
  line-height:1.7;
  color:var(--muted);
}

.footer-base{
  border-top:var(--rule);
  background:rgba(6,26,19,.55);
}
.footer-base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:16px var(--gutter);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--muted);
}
.footer-copy,.footer-icp{white-space:nowrap}
.footer-icp{color:var(--muted)}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:1080px){
  .footer-inner{grid-template-columns:1.4fr 1fr 1.4fr;gap:28px}
  .footer-col:last-child{grid-column:1 / -1}
  .footer-col:last-child .footer-links{display:flex;flex-wrap:wrap;gap:10px 26px}
  .footer-col:last-child .footer-links li+li{margin-top:0}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex}

  .main-nav{
    position:absolute;
    top:100%;left:0;right:0;
    z-index:30;
    display:none;
    padding:8px var(--gutter) 20px;
    background:var(--ink-800);
    border-top:var(--rule);
    border-bottom:1px solid var(--lime);
    box-shadow:0 22px 44px rgba(0,0,0,.5);
  }
  .main-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid rgba(36,70,58,.65)}
  .nav-list li:last-child{border-bottom:0}
  .nav-link{display:block;padding:14px 0;font-size:16px;letter-spacing:.1em}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]::before{
    content:"▸";
    margin-right:9px;
    font-family:var(--font-mono);
    font-size:13px;
  }

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
  .span-4,.span-6,.span-8,.span-12{grid-column:span 6}
}

@media (max-width:760px){
  :root{--gutter:18px}

  .masthead-inner{
    grid-template-columns:1fr;
    justify-items:center;
    gap:12px;
  }
  .masthead-side--start{display:none}
  .masthead-side--end{justify-self:center;justify-content:center;gap:10px}
  .masthead-side--end .btn{font-size:11px;padding:7px 12px}

  .site-header{--mh-pad:14px;--brand-size:28px}
  .site-header[data-condensed]{--mh-pad:8px;--brand-size:22px}

  .brand-sub{font-size:8.5px;letter-spacing:.24em}

  .footer-inner{grid-template-columns:1fr;gap:30px;padding-top:40px}
  .footer-col:last-child{grid-column:auto}
  .footer-col:last-child .footer-links{display:block}
  .footer-col:last-child .footer-links li+li{margin-top:10px}
  .footer-base-inner{justify-content:flex-start;gap:6px 18px}
  .footer-copy,.footer-icp{white-space:normal}
}

@media (max-width:640px){
  .ticker-meta{display:none}
  .ticker-text{font-size:11px;letter-spacing:.03em}
  .ticker-label{letter-spacing:.1em}
  .nav-bar-inner{min-height:50px}
}

@media (max-width:560px){
  .grid-12{grid-template-columns:1fr;gap:14px}
  .span-4,.span-6,.span-8,.span-12{grid-column:span 1}
  .nav-rail-link{font-size:10px;letter-spacing:.08em}
  .nav-rail-link::before{display:none}
  .btn{font-size:11px;padding:8px 12px}
}

/* ---------- 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;
  }
  .ticker-signal{animation:none;opacity:1}
  [data-reveal="pending"]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}