*{box-sizing:border-box}body{margin:0;font:17px/1.7 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1f2937;background:#f8fafc}
a{color:#2563eb}.wrap{max-width:1140px;margin:0 auto;padding:0 18px}
.site-header{background:#0f172a}.nav{display:flex;justify-content:space-between;align-items:center;height:64px}
.logo{color:#fff;font-weight:800;font-size:22px;text-decoration:none}.logo span{color:#38bdf8}
.nav nav a{color:#cbd5e1;margin-left:20px;text-decoration:none}.nav nav a:hover{color:#fff}
.ad-slot{border:2px dashed #94a3b8;background:#f1f5f9;color:#64748b;text-align:center;font-size:13px;display:flex;align-items:center;justify-content:center;margin:18px 0;border-radius:8px}
.ad-header{min-height:100px}.ad-in-article{min-height:250px}.ad-sidebar{min-height:600px}
.layout{display:grid;grid-template-columns:1fr 320px;gap:32px;padding-bottom:40px}.layout.full{grid-template-columns:1fr;max-width:860px}
main article,.box{background:#fff;border-radius:12px;padding:28px 34px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
h1{line-height:1.25;font-size:2.1rem;margin-top:0}h2{margin-top:2rem;color:#0f172a}.meta,.crumbs{color:#64748b;font-size:14px}
.note{background:#eff6ff;padding:12px 16px;border-radius:8px;font-size:15px}
.hero{background:linear-gradient(135deg,#1e3a8a,#0ea5e9);color:#fff;border-radius:16px;padding:48px 36px;margin-bottom:24px}
.hero h1{font-size:2.4rem}.btn{display:inline-block;background:#fff;color:#1e3a8a;padding:10px 22px;border-radius:8px;font-weight:700;text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.card{background:#fff;border-radius:12px;padding:20px;text-decoration:none;color:inherit;box-shadow:0 1px 3px rgba(0,0,0,.08);transition:transform .15s}
.card:hover{transform:translateY(-3px)}.card h3{margin:0 0 8px;color:#0f172a;font-size:1.1rem}.card p{font-size:15px;color:#475569}.card span{color:#2563eb;font-weight:600}
.box h3{margin-top:0}.box li{margin:8px 0}.box{padding:20px}
.site-footer{background:#0f172a;color:#94a3b8;text-align:center;padding:24px 0;font-size:14px}.site-footer a{color:#cbd5e1}
@media(max-width:900px){.layout{grid-template-columns:1fr}.ad-sidebar{min-height:250px}main article{padding:20px}.hero{padding:32px 22px}.hero h1{font-size:1.8rem}}