:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f8fc;--surface:#fff;--text:#111827;--muted:#4b5563;--border:#e5e7eb;--primary:#2563eb}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1080px;margin:0 auto;padding:1rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.1rem}.grid{gap:1rem;display:grid}.grid-2{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.hero{padding:1rem 0 .4rem}.muted{color:var(--muted)}.ad{color:#1e40af;text-align:center;background:#eff6ff;border:2px dashed #93c5fd;border-radius:10px;width:100%;max-width:100%;margin:1.5rem 0;padding:1rem;font-weight:600}.ad-top,.ad-bottom{place-items:center;min-height:96px;display:grid}.ad-middle{place-items:center;min-height:120px;display:grid}.article{max-width:860px;margin:0 auto;font-size:1.02rem;line-height:1.75}.article h2{margin-top:2rem;line-height:1.35}.article p{margin:.8rem 0}.article ul{padding-left:1.1rem}.article section{margin-bottom:1.1rem}.article .ad+section,.article section+.ad{margin-top:1.1rem}summary{cursor:pointer;font-weight:600}.site-header,.site-footer{background:var(--surface);border-bottom:1px solid var(--border)}.site-footer{border-bottom:0;border-top:1px solid var(--border);margin-top:2rem}.nav{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;padding:.9rem 0;display:flex}.nav-links{flex-wrap:wrap;gap:.8rem;display:flex}@media (max-width:720px){.article{font-size:.98rem}}