/* ============================================================
   大发体育方主站 · 共享样式 /assets/site.css
   夜间赛场控制室：深墨绿底 + 荧光青 + 赛道橙
   ============================================================ */

:root{
  --ink:#07130F;
  --charcoal:#101418;
  --panel:#12241D;
  --panel-deep:#0E1C17;
  --cyan:#35F2D0;
  --mist:#8FFBE6;
  --orange:#FF6A2B;
  --amber:#FFC24B;
  --text:#F2F7F5;
  --muted:#9DB3AB;
  --hairline:#2A3B34;
  --mint-glow:linear-gradient(135deg,#0B2B22 0%,#123A2E 60%,#0E2A22 100%);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --fs-48:48px; --fs-36:36px; --fs-28:28px; --fs-22:22px; --fs-18:18px; --fs-16:16px; --fs-14:14px; --fs-12:12px;
  --wrap:1240px;
  --gap:24px;
  --radius:2px;
  --shadow-panel:0 1px 0 rgba(255,255,255,.02),0 24px 48px -36px #000;
  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 14% -12%,rgba(53,242,208,.08),transparent 46%),
    radial-gradient(circle at 88% 2%,rgba(255,106,43,.07),transparent 42%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:var(--fs-16);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
main{display:block}
::selection{background:rgba(53,242,208,.28);color:#fff}

h1,h2,h3,h4{font-weight:900;letter-spacing:-.02em;line-height:1.18}
h1{font-size:clamp(30px,4.6vw,var(--fs-48))}
h2{font-size:clamp(24px,3vw,var(--fs-36))}
h3{font-size:clamp(18px,2vw,var(--fs-22))}
strong{font-weight:800}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:1px}

/* ---------- 布局骨架 ---------- */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:24px}

.section{position:relative;padding:72px 0;border-top:1px solid var(--hairline)}
.section--bare{border-top:0;padding-top:0}
.section--tight{padding:44px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 18px;margin-bottom:28px}
.section-num{
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.16em;
  color:var(--cyan);padding:3px 8px;border:1px solid rgba(53,242,208,.35);
  background:rgba(53,242,208,.07);border-radius:var(--radius);white-space:nowrap;
}
.section-title{font-size:clamp(22px,2.6vw,var(--fs-28));color:var(--text)}
.section-desc{flex:1 1 280px;font-size:var(--fs-14);color:var(--muted);max-width:62ch;line-height:1.8}
.section-body{position:relative}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.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}

/* ---------- 面板 / 索引 / 标签 ---------- */
.panel{
  position:relative;background:var(--panel);border:1px solid var(--hairline);
  border-radius:var(--radius);box-shadow:var(--shadow-panel);overflow:hidden;
}
.panel-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 18px;border-bottom:1px solid var(--hairline);background:rgba(255,255,255,.015);
}
.panel-title{font-size:14.5px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.panel-meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.panel-body{padding:18px}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 9px;border-radius:var(--radius);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--hairline);color:var(--muted);background:rgba(255,255,255,.02);white-space:nowrap;
}
.chip--cyan{color:var(--cyan);border-color:rgba(53,242,208,.42);background:rgba(53,242,208,.08)}
.chip--orange{color:var(--orange);border-color:rgba(255,106,43,.42);background:rgba(255,106,43,.09)}
.chip--amber{color:var(--amber);border-color:rgba(255,194,75,.4);background:rgba(255,194,75,.08)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border-radius:var(--radius);border:1px solid var(--hairline);
  background:transparent;color:var(--text);font-size:14.5px;font-weight:700;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),
             border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--orange);border-color:var(--orange);color:#0B120F;box-shadow:0 14px 32px -20px rgba(255,106,43,.95)}
.btn--primary:hover{background:#FF7E45;border-color:#FF7E45}
.btn--cyan{background:var(--cyan);border-color:var(--cyan);color:#06231C}
.btn--cyan:hover{background:var(--mist);border-color:var(--mist)}
.btn--ghost{color:var(--text)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(53,242,208,.06)}
.btn--sm{padding:8px 14px;font-size:13px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:16px 0;border-bottom:1px solid var(--hairline)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;color:var(--muted)}
.breadcrumb-item{display:flex;align-items:center;gap:8px}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:#3C554C}
.breadcrumb-item a{color:var(--muted);transition:color var(--dur) var(--ease)}
.breadcrumb-item a:hover{color:var(--cyan)}
.breadcrumb-item[aria-current="page"]{color:var(--text)}

/* ---------- 媒体容器（供页面阶段放图） ---------- */
.media-frame{
  position:relative;display:block;width:100%;aspect-ratio:4/3;overflow:hidden;
  background:var(--mint-glow);border:1px solid var(--hairline);border-radius:var(--radius);
}
.media-frame::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.34;
  background-image:linear-gradient(var(--hairline) 1px,transparent 1px),
                   linear-gradient(90deg,var(--hairline) 1px,transparent 1px);
  background-size:44px 44px;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 28% 18%,rgba(53,242,208,.22),transparent 56%),
             radial-gradient(circle at 82% 92%,rgba(255,106,43,.18),transparent 52%);
}
.media-frame>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.media-frame--photo::before,.media-frame--photo::after{display:none}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__label{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist);
}
.media-frame__label--top{top:12px;bottom:auto}

/* ---------- 骨架屏 ---------- */
.skeleton{position:relative;overflow:hidden;background:rgba(42,59,52,.5);border-radius:var(--radius);min-height:12px}
.skeleton::after{
  content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(53,242,208,.14),transparent);
  animation:shimmer 1.8s linear infinite;
}
.skeleton-line{height:12px;margin-bottom:10px}
.skeleton-line:last-child{margin-bottom:0;width:62%}

/* ---------- 标签页 ---------- */
.tabs{position:relative}
.tab-list{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--hairline);margin-bottom:22px}
.tab{
  appearance:none;border:0;border-bottom:2px solid transparent;background:transparent;
  padding:12px 16px;font-size:14.5px;font-weight:700;color:var(--muted);cursor:pointer;
  letter-spacing:.01em;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tab:hover{color:var(--text)}
.tab[aria-selected="true"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.tab-panel{padding-top:2px}
.tab-panel[hidden]{display:none}
.tab-panel.is-active{display:block}
.tab-status{min-height:1.2em;margin-top:14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--amber)}

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

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:-64px;z-index:200;padding:10px 16px;border-radius:var(--radius);
  background:var(--cyan);color:#06231C;font-weight:800;font-size:14px;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ============================================================
   头部
   ============================================================ */
.site-header{position:relative;z-index:60}

.header-top{background:var(--charcoal);border-bottom:1px solid var(--hairline);font-size:13px}
.header-top .container{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:46px;padding-block:6px}
.brand-block{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  flex:none;width:28px;height:28px;display:grid;place-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.02em;
  color:var(--cyan);border:1px solid rgba(53,242,208,.5);background:rgba(53,242,208,.07);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-name{font-weight:900;font-size:15px;letter-spacing:-.01em;color:var(--text);white-space:nowrap;transition:color var(--dur) var(--ease)}
.brand-name:hover{color:var(--cyan)}
.brand-tag{
  padding-left:12px;border-left:1px solid var(--hairline);
  font-size:12.5px;color:var(--muted);white-space:nowrap;
}
.header-meta{display:flex;align-items:center;gap:20px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.meta-item{display:flex;align-items:center;gap:8px;white-space:nowrap}
.meta-dot{width:6px;height:6px;flex:none;background:var(--cyan);box-shadow:0 0 8px var(--cyan);animation:pulse 2.6s ease-in-out infinite}

.header-nav-layer{
  position:sticky;top:0;z-index:60;
  background:rgba(7,19,15,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:58px}
.channel-nav{display:flex;align-items:stretch;gap:2px;flex:1 1 auto;min-width:0}
.channel-link{
  position:relative;display:inline-flex;align-items:baseline;gap:8px;
  padding:19px 14px;font-size:15px;font-weight:600;color:var(--muted);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.channel-link:hover{color:var(--text)}
.channel-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--cyan);
  transform:scaleX(0);transform-origin:left center;transition:transform var(--dur) var(--ease);
}
.channel-link:hover::after{transform:scaleX(1);background:var(--hairline)}
.channel-link[aria-current="page"]{color:var(--cyan)}
.channel-link[aria-current="page"]::after{transform:scaleX(1);box-shadow:0 0 12px rgba(53,242,208,.65)}
.channel-index{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:#4C6B60}
.channel-link[aria-current="page"] .channel-index{color:var(--cyan)}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.action-btn{
  display:inline-flex;align-items:center;padding:9px 15px;border-radius:var(--radius);
  border:1px solid var(--hairline);background:transparent;color:var(--muted);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;white-space:nowrap;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.action-btn:hover{color:var(--cyan);border-color:rgba(53,242,208,.6);background:rgba(53,242,208,.07)}
.action-btn--primary{
  background:var(--orange);border-color:var(--orange);color:#0B120F;font-weight:700;
}
.action-btn--primary:hover{background:#FF7E45;border-color:#FF7E45;color:#0B120F}

.nav-toggle{
  display:none;flex:none;width:44px;height:38px;place-items:center;align-content:center;
  border:1px solid var(--hairline);border-radius:var(--radius);
  background:transparent;color:var(--text);cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bar{display:block;width:18px;height:1.5px;margin:3px auto;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--mist) 45%,var(--orange) 100%);
  transform:scaleX(0);transform-origin:left center;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  margin-top:0;background:var(--charcoal);border-top:1px solid var(--hairline);
  color:var(--muted);font-size:14px;
}
.site-footer .container{padding-top:54px}
.footer-grid{
  display:grid;grid-template-columns:1.7fr repeat(4,minmax(0,1fr));
  gap:34px 26px;padding-bottom:42px;
}
.footer-brand .brand-mark{margin-bottom:14px}
.footer-brand-name{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.footer-tag{margin-top:6px;font-size:13px;line-height:1.75;max-width:30ch}
.footer-contact{margin-top:16px;display:grid;gap:8px}
.contact-row{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:baseline;font-size:12.5px}
.contact-label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:#5F7A70}
.contact-value{font-family:var(--font-mono);font-size:12.5px;color:var(--text);word-break:break-word}

.footer-col-title{
  margin-bottom:14px;font-family:var(--font-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--text);
}
.footer-list{display:grid;gap:10px}
.footer-link{font-size:13.5px;color:var(--muted);transition:color var(--dur) var(--ease)}
.footer-link:hover{color:var(--cyan)}
.footer-text{font-size:13px;line-height:1.7;color:var(--muted)}
.footer-hours{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--amber)}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  padding:16px 0 26px;border-top:1px solid var(--hairline);
}
.footer-icp{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:#6C857B}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 20px}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1024px){
  .container{padding-inline:20px}
  .section{padding:56px 0}
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr));gap:20px}
  .col-3,.col-4{grid-column:span 4}
  .col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 8}

  .brand-tag{display:none}
  .header-meta .meta-item:nth-child(2){display:none}

  .nav-toggle{display:grid}
  .nav-inner{min-height:54px}
  .channel-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--charcoal);border-bottom:1px solid var(--hairline);
    padding:6px 0 12px;max-height:calc(100vh - 110px);overflow-y:auto;
    box-shadow:0 26px 46px -30px #000;
  }
  .channel-nav[data-open="true"]{display:flex}
  .channel-link{padding:14px 20px;font-size:15.5px;border-bottom:1px solid rgba(42,59,52,.55)}
  .channel-link:last-child{border-bottom:0}
  .channel-link::after{left:0;right:auto;top:0;bottom:0;width:3px;height:auto;
    transform:scaleY(0);transform-origin:top center}
  .channel-link:hover::after{transform:scaleY(1)}
  .channel-link[aria-current="page"]{background:rgba(53,242,208,.07)}
  .channel-link[aria-current="page"]::after{transform:scaleY(1)}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
}

@media (max-width:640px){
  body{font-size:15px}
  .container{padding-inline:18px}
  .section{padding:46px 0}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:1/-1}

  .header-top .container{min-height:42px}
  .header-meta{display:none}
  .brand-name{font-size:14.5px}
  .nav-actions{margin-left:auto}
  .action-btn{padding:8px 11px;font-size:10.5px;letter-spacing:.08em}
  .action-btn:not(.action-btn--primary){display:none}
  .channel-link{padding:13px 18px;font-size:15px}

  .site-footer .container{padding-top:40px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .tab-list{gap:0}
  .tab{padding:11px 12px;font-size:14px}
}

/* ============================================================
   动效与可访问性
   ============================================================ */
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.82)}}
@keyframes shimmer{100%{transform:translateX(100%)}}

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