:root{color-scheme:light;--bg:#f6f7fb;--surface:#fff;--text:#0f172a;--muted:#5b6478;--border:#e2e8f0;--accent:#4f46e5;--accent-hover:#4338ca;--accent-soft:#eef2ff;--shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06)}
*{box-sizing:border-box}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;margin:0;color:var(--text);line-height:1.65;background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--accent)}
.wrap{max-width:1024px;margin:0 auto;padding:0 24px}
.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--border);padding:14px 0}
.site-header .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.logo{font-weight:800;letter-spacing:-.02em;text-decoration:none;color:var(--text);font-size:21px}
.logo:hover{color:var(--accent)}
nav{display:flex;flex-wrap:wrap;gap:4px}
nav a{margin:0;color:var(--muted);text-decoration:none;padding:7px 11px;border-radius:999px;font-weight:600;font-size:14px}
nav a:hover{color:var(--accent);background:var(--accent-soft);text-decoration:none}
main.wrap{padding-top:36px;padding-bottom:16px}
h1{font-size:clamp(30px,4.5vw,44px);line-height:1.12;letter-spacing:-.03em;margin:12px 0 14px;max-width:820px}
h2{margin-top:40px;font-size:24px;letter-spacing:-.02em;line-height:1.3}
h3{line-height:1.35}
.lede{font-size:18px;color:var(--muted);max-width:760px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px;margin-top:18px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.card:hover{transform:translateY(-3px);border-color:#c7d2fe;box-shadow:0 2px 4px rgba(15,23,42,.06),0 14px 32px rgba(15,23,42,.1)}
.card h3{margin:0 0 6px;font-size:19px}
.card h3 a{color:var(--text);text-decoration:none}
.card h3 a:hover{color:var(--accent)}
.card p{color:var(--muted);margin:8px 0}
.cat{color:var(--accent)!important;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:700}
.btn{display:inline-block;background:var(--accent);color:#fff!important;padding:9px 15px;border-radius:999px;text-decoration:none;border:0;cursor:pointer;font-weight:650;font-size:14px;transition:background .18s ease,transform .18s ease}
.btn:hover{background:var(--accent-hover);transform:translateY(-1px)}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}
.chip{border:1px solid var(--border);background:var(--surface);border-radius:999px;padding:8px 14px;text-decoration:none;color:var(--text);font-weight:600;font-size:14px;box-shadow:0 1px 2px rgba(15,23,42,.04);transition:border-color .18s ease,background .18s ease,color .18s ease}
.chip:hover{border-color:#c7d2fe;background:var(--accent-soft);color:var(--accent)}
.search-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow);margin:26px 0 8px}
.search-box label{display:block;font-weight:700;margin-bottom:10px}
.search-box input{width:100%;padding:13px 14px;border:1px solid #cbd5e1;border-radius:10px;font-size:16px;background:#fff;color:var(--text);outline:none}
.search-box input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(79,70,229,.14)}
.search-box p{color:var(--muted);font-size:14px;margin:10px 0 0}
pre{white-space:pre-wrap;background:#0f172a;color:#e2e8f0;padding:20px;border-radius:14px;overflow:auto;line-height:1.65;font-size:15px;box-shadow:var(--shadow)}
.ad-slot{border:1px dashed #cbd5e1;background:rgba(255,255,255,.7);border-radius:12px;text-align:center;padding:18px;margin:36px 0;color:var(--muted);font-size:14px}
.site-footer{border-top:1px solid var(--border);margin-top:56px;padding:28px 0 36px;color:var(--muted);background:#fff}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--accent)}
.breadcrumb{color:var(--muted);font-size:14px}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--accent);text-decoration:underline}
a:focus-visible,.btn:focus-visible,.chip:focus-visible,.search-box input:focus-visible{outline:3px solid rgba(79,70,229,.35);outline-offset:2px}
@media(max-width:640px){
.wrap{padding:0 16px}
.site-header{position:static}
main.wrap{padding-top:24px}
h1{font-size:31px}
h2{font-size:22px}
.grid{grid-template-columns:1fr;gap:14px}
.card{padding:18px}
.search-box{padding:16px}
nav a{padding:6px 9px}
}
@media(prefers-reduced-motion:reduce){
.card,.btn,.chip{transition:none}
.card:hover,.btn:hover{transform:none}
}