:root{--h:198;--ah:45;--sat:63%;--lit:55%;--radius:5px;--space:.82;--max:1002px;--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:1040px}.hero{grid-template-columns:1fr}.hero-copy{text-align:center;max-width:820px;margin:auto}.cards{grid-template-columns:1fr 1fr}
.card{border-width:1px 0 0;border-radius:0;background:transparent}.hero-art{border-radius:0}
h1,h2,.brand{font-family:Inter,system-ui,"Microsoft YaHei",sans-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 */
body{background:#f5f6f4;color:#1f2421;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;margin:0;letter-spacing:.01em}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:24px;padding:12px 32px;background:rgba(245,246,244,.97);border-bottom:1px solid #d8dad5}
.brand{display:flex;align-items:center;gap:10px;font-family:"Space Grotesk","Archivo",system-ui,sans-serif;font-weight:700;font-size:18px;letter-spacing:-.01em;color:#1f2421}
.brand::before{content:"";display:inline-block;width:14px;height:14px;background:#1a5f7a}
.nav{display:flex;gap:28px;margin-left:auto;align-items:center}
.nav a{position:relative;color:#1f2421;text-decoration:none;font-size:15px;padding:4px 0;transition:color .18s ease}
.nav a:hover{color:#1a5f7a}
.nav a.active{color:#1a5f7a}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:#1a5f7a}
.nav .burger{display:none;width:34px;height:34px;border:1px solid #d8dad5;background:#fff}
.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;max-width:1200px;margin:0 auto;padding:48px 32px 28px}
.hero-copy{max-width:520px}
.hero-copy h1{font-family:"Space Grotesk","Archivo",system-ui,sans-serif;font-weight:700;font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.02em;margin:0 0 14px}
.hero-copy .lead{font-size:17px;color:#5a6660;margin:0 0 22px;line-height:1.65}
.hero-copy .button{margin-top:4px}
.hero-art{background:#ebede9;border:1px solid #d8dad5;aspect-ratio:4/3;position:relative;min-height:240px;background-image:linear-gradient(135deg,#ebede9 0,#d8dad5 100%)}
.hero-art::after{content:"足球数据计算工作台：控球率与射门次数对比 · 示例数据";position:absolute;inset:auto 0 0 0;padding:8px 12px;font-size:12px;color:#5a6660;background:#f0ebe3;border-top:1px solid #d8dad5}
.section{max-width:1200px;margin:0 auto;padding:32px}
.section h2{font-family:"Space Grotesk","Archivo",system-ui,sans-serif;font-weight:700;font-size:22px;letter-spacing:-.01em;margin:0 0 20px;display:flex;align-items:center;gap:10px}
.section h2::before{content:"";width:6px;height:18px;background:#1a5f7a}
.cards{display:grid;gap:20px}
.cards.cols-3{grid-template-columns:repeat(3,1fr)}
.cards.cols-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid #d8dad5;padding:20px;display:flex;flex-direction:column;gap:10px;transition:border-color .18s ease,text-decoration-line .18s}
.card:hover{border-color:#1a5f7a}
.card.fresh{border-left:3