/* ==========================================================================
   乐竞赛场 · 共享样式 /assets/site.css
   头部刊头 + 页脚索引 + 固定服务条 + 通用组件
   ========================================================================== */

:root{
  --ink:#061310;
  --panel:#14181B;
  --turf:#102A20;
  --lime:#C8FF3D;
  --orange:#FF7A2F;
  --blue:#7FA6C9;
  --frost:#EDF2EE;
  --mist:#A6B3AC;
  --line:#24332D;
  --glass:rgba(237,242,238,0.08);
  --sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --wrap:1240px;
  --gutter:clamp(16px,4vw,40px);
  --contact-h:56px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --grid-step:8.3333%;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

/* ---------- 中文排版基线 ---------- */
body{
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  color:var(--frost);
  background-color:var(--ink);
  background-image:repeating-linear-gradient(to right,rgba(36,51,45,.62) 0 1px,transparent 1px var(--grid-step));
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--display);font-weight:800;letter-spacing:-.02em;line-height:1.06;color:var(--frost)}
h1{font-size:clamp(34px,5vw,68px)}
h2{font-size:clamp(26px,3.4vw,44px)}
h3{font-size:clamp(20px,2.2vw,30px)}
p{max-width:44em}
a{text-decoration-color:var(--line);text-underline-offset:3px}
a:hover{text-decoration-color:var(--lime)}
::selection{background:var(--lime);color:#06130f}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:2px}

/* ---------- 通用工具 ---------- */
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding:clamp(40px,6vw,88px) 0}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.numeral{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:-.01em;line-height:1;color:var(--frost)}
.label{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}
.lede{font-family:var(--serif);font-size:clamp(20px,2.2vw,26px);line-height:1.62;color:var(--frost);max-width:28em}
.prose{max-width:34em}
.prose p{margin-bottom:1.1em}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--lime);font-weight:600}

.grid12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,2vw,24px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}

.rule-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 20px;
  padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid var(--line);border-radius:2px;
  background:var(--panel);color:var(--frost);
  font-size:15px;font-weight:600;letter-spacing:.02em;text-decoration:none;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{border-color:var(--lime);color:var(--lime)}
.btn:active{transform:translateY(1px)}
.btn--lime{background:var(--lime);border-color:var(--lime);color:#06130f;font-weight:700}
.btn--lime:hover{background:#d9ff7a;border-color:#d9ff7a;color:#06130f}
.btn--ghost{background:transparent}
.btn--sm{padding:8px 14px;font-size:13px}
.btn--block{width:100%}

/* ---------- 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:2px;
  border:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mist);
}
.chip--football{border-color:rgba(127,166,201,.5);background:rgba(127,166,201,.1);color:var(--blue)}
.chip--basketball{border-color:rgba(255,122,47,.55);background:rgba(255,122,47,.1);color:var(--orange)}
.chip--live{border-color:rgba(200,255,61,.55);background:rgba(200,255,61,.12);color:var(--lime)}

/* ---------- 玻璃层 ---------- */
.glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(237,242,238,.16);
  border-radius:2px;
}

/* ---------- 图片容器基础 ---------- */
.media{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:2px;
  background:linear-gradient(160deg,var(--turf) 0%,#0a1a15 58%,var(--panel) 100%);
}
.media::before{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(127,166,201,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(200,255,61,.14) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.75;
}
.media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:44%;z-index:2;pointer-events:none;
  background:linear-gradient(to top,rgba(6,19,16,.82),rgba(6,19,16,0));
}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__caption{
  position:absolute;z-index:3;left:12px;right:12px;bottom:12px;
  padding:8px 12px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--frost);
  background:rgba(6,19,16,.55);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(237,242,238,.16);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--mist);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--mist);text-decoration:none}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb [aria-current="page"]{color:var(--frost)}

/* ---------- 显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 动画 ---------- */
@keyframes clockPulse{0%,100%{opacity:1}50%{opacity:.78}}
@keyframes navFade{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:200;
  padding:10px 18px;border-radius:2px;
  background:var(--lime);color:#06130f;font-size:14px;font-weight:700;text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(6,19,16,.94);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header-frame{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}

.masthead{
  display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;gap:clamp(12px,3vw,32px);
  padding:16px 0 12px;
}
.masthead__meta{display:flex;flex-direction:column;gap:2px;min-width:0}
.meta-line{
  display:flex;align-items:baseline;gap:8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--mist);white-space:nowrap;
}
.meta-key{color:var(--mist)}
.meta-val{color:var(--frost);font-variant-numeric:tabular-nums}
.meta-line--clock .meta-val{color:var(--lime);animation:clockPulse 2s ease-in-out infinite}

.brand{
  display:flex;flex-direction:column;align-items:center;gap:6px;
  justify-self:center;text-decoration:none;color:var(--frost);
}
.brand__name{
  display:inline-flex;align-items:flex-end;gap:9px;
  font-family:var(--display);font-size:clamp(24px,2.8vw,34px);font-weight:800;
  letter-spacing:-.02em;line-height:1;color:var(--frost);
}
.brand__mark{
  display:block;width:9px;height:9px;margin-bottom:4px;
  background:var(--lime);transform:rotate(45deg);
  transition:transform .3s var(--ease),background-color .2s var(--ease);
}
.brand:hover .brand__mark{transform:rotate(135deg);background:var(--orange)}
.brand__line{font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--mist)}

.masthead__tools{display:flex;align-items:center;justify-content:flex-end;gap:10px}
.search-link{
  position:relative;display:inline-flex;align-items:center;
  padding:7px 12px 7px 30px;border:1px solid var(--line);border-radius:2px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;
  color:var(--mist);text-decoration:none;white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.search-link::before{
  content:"";position:absolute;left:12px;top:50%;width:9px;height:9px;margin-top:-6px;
  border:1.5px solid currentColor;border-radius:50%;
}
.search-link::after{
  content:"";position:absolute;left:20px;top:50%;width:6px;height:1.5px;margin-top:1px;
  background:currentColor;transform:rotate(45deg);transform-origin:left center;
}
.search-link:hover{color:var(--lime);border-color:var(--lime)}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 12px;border:1px solid var(--line);border-radius:2px;
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--frost);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:flex;flex-direction:column;justify-content:center;gap:3px;width:16px}
.nav-toggle__bars span{display:block;height:1.5px;background:currentColor;transition:transform .25s 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(4.5px) 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(-4.5px) rotate(-45deg)}

.site-nav{border-top:1px solid var(--line)}
.site-nav__list{display:flex;justify-content:center;align-items:stretch;gap:clamp(4px,2vw,28px)}
.site-nav__link{
  position:relative;display:flex;align-items:baseline;gap:8px;
  padding:12px 6px 13px;
  font-size:14px;letter-spacing:.02em;color:var(--frost);text-decoration:none;
  transition:color .2s var(--ease);
}
.site-nav__num{font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--mist);transition:color .2s var(--ease)}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--lime),var(--blue) 62%,var(--orange));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .28s var(--ease);
}
.site-nav__link:hover{color:var(--lime)}
.site-nav__link:hover .site-nav__num{color:var(--lime)}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--lime)}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--lime)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--lime)}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden;pointer-events:none}
.scroll-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--lime),var(--blue) 70%,var(--orange));
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;z-index:1;
  background:linear-gradient(180deg,var(--ink) 0%,#04100d 100%);
  border-top:1px solid var(--line);
  padding:clamp(40px,6vw,72px) 0 calc(var(--contact-h) + 44px);
}
.footer-frame{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,2.75fr);
  gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(24px,4vw,40px);
  border-bottom:1px solid var(--line);
}
.footer-brand__name{font-family:var(--display);font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1}
.footer-brand__line{margin-top:10px;font-size:15px;line-height:1.7;color:var(--frost);max-width:22em}
.footer-brand__meta{margin-top:14px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--blue)}
.footer-brand__note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--mist);max-width:26em}

.footer-cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(16px,3vw,32px)}
.footer-col__title{
  margin-bottom:12px;font-family:var(--mono);font-size:11px;font-weight:400;
  letter-spacing:.2em;text-transform:uppercase;color:var(--lime);
}
.footer-col ul{display:grid;gap:9px}
.footer-col a{
  display:inline-block;font-size:15px;color:var(--frost);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col a:hover{color:var(--lime);border-color:var(--lime)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 26px;
  padding-top:20px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--mist);
}
.footer-legal p{max-width:none}
.footer-legal__note{margin-left:auto;color:rgba(166,179,172,.72)}

/* ---------- 固定服务条 ---------- */
.contact-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:100;
  background:rgba(20,24,27,.96);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.contact-dock__inner{
  display:flex;align-items:center;gap:clamp(12px,2.4vw,28px);
  max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);
  min-height:var(--contact-h);
}
.contact-dock__lead{
  display:inline-flex;align-items:center;gap:8px;flex:none;
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--lime);white-space:nowrap;
}
.contact-dock__dot{
  width:7px;height:7px;border-radius:50%;background:var(--lime);
  animation:clockPulse 2s ease-in-out infinite;
}
.contact-dock__item{
  font-size:12px;line-height:1.2;color:var(--frost);white-space:nowrap;
  max-width:none;
}
.contact-dock__addr{color:var(--mist)}
.contact-dock__links{display:flex;align-items:center;gap:18px;margin-left:auto;flex:none}
.contact-dock__links a{
  font-size:13px;color:var(--frost);text-decoration:none;
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.contact-dock__links a:hover{color:var(--lime);border-color:var(--lime)}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1100px){
  .footer-top{grid-template-columns:1fr;gap:32px}
  .contact-dock__addr{display:none}
}

@media (max-width:960px){
  :root{--grid-step:16.6667%}
  .masthead{grid-template-columns:minmax(0,1fr) auto;padding:14px 0 12px;gap:12px}
  .masthead__meta{display:none}
  .brand{justify-self:start;align-items:flex-start}
  .brand__line{letter-spacing:.16em}
  .search-link{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{display:none}
  .site-nav[data-open]{
    display:block;
    max-height:calc(100vh - 140px);
    overflow-y:auto;
    animation:navFade .28s var(--ease);
  }
  .site-nav__list{flex-direction:column;gap:0;padding:2px 0 10px}
  .site-nav__list li+li{border-top:1px solid var(--line)}
  .site-nav__link{padding:14px 4px;font-size:16px;width:100%;justify-content:flex-start}
  .site-nav__link::after{display:none}
  .site-nav__link[aria-current="page"]{background:rgba(200,255,61,.07);padding-left:12px}

  .contact-dock__hours,
  .contact-dock__item.mono:not(.contact-dock__phone){display:none}
  .contact-dock__inner{gap:14px}

  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9{grid-column:span 12}
}

@media (max-width:760px){
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-legal__note{margin-left:0;width:100%}
  .contact-dock__lead{font-size:10px;letter-spacing:.1em}
  .contact-dock__links{gap:12px}
}

@media (max-width:520px){
  body{font-size:16px}
  .masthead__tools{gap:8px}
  .brand__name{font-size:23px}
  .footer-cols{grid-template-columns:1fr}
  .contact-dock__lead .contact-dock__dot{margin-right:0}
  .contact-dock__phone{font-size:11px}
  .contact-dock__links a{font-size:12px}
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none}
  .meta-line--clock .meta-val,
  .contact-dock__dot{animation:none}
  .brand:hover .brand__mark{transform:rotate(45deg)}
}