:root{--h:216;--ah:184;--sat:77%;--lit:60%;--radius:5px;--space:1;--max:991px;--bg:hsl(var(--h) 34% 8%);--panel:hsl(var(--h) 25% 13%);--ink:hsl(var(--h) 20% 96%);--muted:hsl(var(--h) 14% 70%);--accent:hsl(var(--ah) var(--sat) var(--lit));--line:hsl(var(--h) 20% 28%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Microsoft YaHei",sans-serif}body.light{--bg:hsl(var(--h) 35% 96%);--panel:white;--ink:hsl(var(--h) 35% 11%);--muted:hsl(var(--h) 12% 38%);--line:hsl(var(--h) 18% 82%)}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}.shell{width:min(var(--max),92vw);margin:auto}.topbar{display:flex;align-items:center;gap:22px;padding:20px 0;border-bottom:1px solid var(--line);position:relative;z-index:4}.brand{font-weight:900;letter-spacing:.06em;margin-right:auto}.nav{display:flex;gap:18px;align-items:center}.nav a,.tool{color:var(--muted)}.tool{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:7px 11px}.nav-toggle{display:none;align-items:center;justify-content:center;line-height:1}.nav-backdrop{display:none;position:fixed;inset:0;background:#0008;z-index:15}.nav-backdrop.open{display:block}.hero{position:relative;display:grid;gap:clamp(28px,5vw,70px);align-items:center;padding:calc(54px * var(--space)) 0;overflow:hidden}.hero-copy{position:relative}.eyebrow,.kicker{color:var(--accent);font-weight:800;letter-spacing:.15em;text-transform:uppercase}h1{font-size:clamp(38px,5.2vw,70px);line-height:1.08;letter-spacing:-.035em;margin:14px 0 22px;overflow-wrap:anywhere}h2{line-height:1.25}.lead{font-size:clamp(17px,2vw,20px);color:var(--muted);max-width:780px}.hero-art{min-height:360px;border:1px solid var(--line);border-radius:calc(var(--radius) + 12px);background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 22%,transparent),var(--panel));overflow:hidden;display:grid;place-items:center;position:relative}.hero-art img{width:100%;height:100%;object-fit:cover}.section{padding:calc(44px * var(--space)) 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section-head p,.muted{color:var(--muted)}.cards{display:grid;gap:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:calc(25px * var(--space));transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-3px);border-color:var(--accent)}.card-index{font-weight:900;color:var(--accent)}.card p{color:var(--muted)}.article{width:min(760px,92vw);margin:auto;padding:56px 0}.article h1{font-size:clamp(34px,5vw,58px)}.article-figure{margin:24px 0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}.article-figure img{width:100%;display:block;object-fit:cover;max-height:420px}.article-body{font-size:18px}.article-body p{margin:1.2em 0}.crumbs{color:var(--muted);font-size:14px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:28px 0}.button{display:inline-block;background:var(--accent);color:hsl(var(--h) 40% 8%);border:0;border-radius:999px;padding:10px 17px;font-weight:800}.button.secondary{background:var(--panel);color:var(--ink);border:1px solid var(--line)}details{padding:16px 0;border-bottom:1px solid var(--line)}summary{font-weight:750;cursor:pointer}.search-layer{position:fixed;inset:0;background:#000b;z-index:20;display:none;padding:8vh 5vw}.search-layer.open{display:block}.search-box{max-width:760px;margin:auto;background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:var(--radius)}.search-box input,.form input,.form textarea{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:12px}.result{display:block;padding:14px 0;border-bottom:1px solid var(--line)}.form{display:grid;gap:14px;max-width:680px}.form label{display:grid;gap:5px}.hp{position:absolute;left:-9999px}footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);margin-top:50px}.shell{max-width:1120px}.hero{grid-template-columns:1.4fr .6fr}.cards{grid-template-columns:1fr 1fr}.card:nth-child(1){grid-column:1/-1}
.card{border-width:1px 0 0;border-radius:0;background:transparent}.hero-art{border-radius:0}.topbar{margin-top:16px;padding:14px 18px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}
h1,h2,.brand{font-family:Georgia,"Noto Serif SC","Songti SC",serif}h1{font-size:clamp(36px,4.3vw,58px);line-height:1.1;letter-spacing:-.025em}
@media(max-width:800px){.nav-toggle{display:inline-flex}.nav{position:fixed;top:0;right:-100%;bottom:0;width:min(80vw,320px);flex-direction:column;align-items:flex-start;gap:22px;padding:88px 26px 26px;background:var(--panel);border-left:1px solid var(--line);transition:right .25s ease;z-index:16}.nav.open{right:0}.nav a{display:block;font-size:16px}.hero,.cards,.card{grid-template-columns:1fr!important}.card{grid-column:auto!important;transform:none!important}.hero-art{min-height:260px;position:relative}h1{font-size:clamp(32px,9vw,46px)}}

/* AI-generated per-site template layer */
/* 竞速洞见 — 黑曜石指挥室覆盖层 */
body{
  background:#0B0E14;
  background-image:
    repeating-linear-gradient(90deg,transparent 0 42px,rgba(123,107,255,0.045) 42px 43px),
    repeating-linear-gradient(0deg,transparent 0 42px,rgba(61,214,199,0.028) 42px 43px),
    radial-gradient(ellipse 80% 50% at 18% 0%,rgba(123,107,255,0.12),transparent 62%),
    radial-gradient(ellipse 70% 42% at 100% 100%,rgba(245,166,35,0.06),transparent 60%);
  color:#E8ECF2;
  font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.62;letter-spacing:0.01em;margin:0;min-height:100vh;
}
.topbar{
  position:sticky;top:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;gap:1.2rem;
  padding:0.8rem clamp(1rem,3vw,2.5rem);
  background:rgba(11,14,20,0.74);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(120,140,180,0.15);
}
.brand{
  font-weight:900;font-size:1.22rem;letter-spacing:0.1em;
  color:#E8ECF2;padding-left:0.55rem;
  border-left:3px solid #F5A623;white-space:nowrap;
}
.brand span{color:#F5A623;}
.nav{display:flex;flex-wrap:wrap;gap:0.3rem;font-size:0.92rem;}
.nav a{
  color:#9AA5B8;text-decoration:none;padding:0.42rem 0.78rem;border-radius:4px;
  transition:color .2s,background .2s;position:relative;
}
.nav a:hover{color:#7B6BFF;background:rgba(123,107,255,0.10);}
.nav a:focus-visible{outline:2px solid #F5A623;outline-offset:2px;}
.hero{
  display:grid;grid-template-columns:1.35fr 1fr;gap:2rem;align-items:stretch;
  padding:clamp(1.4rem,4vw,3.2rem) clamp(1rem,3vw,2.5rem) 2rem;
  max-width:1400px;margin:0 auto;border-bottom:1px solid rgba(120,140,180,0.12);
}
.hero-art{
  min-height:330px;border:1px solid rgba(120,140,180,0.18);border-radius:10px;
  background:
    repeating-linear-gradient(0deg,transparent 0 24px,rgba(61,214,199,0.08) 24px 25px),
    repeating-linear-gradient(90deg,transparent 0 24px,rgba(123,107,255,0.06) 24px 25px),
    radial-gradient(circle at 28% 30%,rgba(245,166,35,0.20),transparent 55%),
    linear-gradient(135deg,#121826,#0B0E14);
  box-shadow:0 0 0 1px rgba(123,107,255,0.05),0 20px 60px -20px rgba(0,0,0,0.7);
  position:relative;
}
.hero-art::after{
  content:"编辑整理 · DEMO INDEX";position:absolute;left:1rem;bottom:1rem;
  font-family:ui-mon