/* Global styles */
:root{ --bg:#fff; --text:#111; --muted:#555; --border:#ececec; --brand:#1abc9c; }
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,'Noto Sans',sans-serif;line-height:1.6}
a{color:inherit}
.container{max-width:1100px;margin:0 auto;padding:16px}
.site-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);position:sticky;top:0;background:#fff;z-index:10}
.logo{display:flex;gap:8px;text-decoration:none;font-weight:800}
.nav a{margin-left:14px;text-decoration:none;color:#222}
.nav a:hover{color:var(--brand)}
.hero{padding:28px;border:1px solid var(--border);border-radius:12px;background:#f6fffb;margin:18px 0}
.btn{display:inline-block;padding:10px 14px;border-radius:8px;border:1px solid var(--brand);text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin:16px 0}
.card{border:1px solid var(--border);border-radius:12px;padding:16px;background:#fff}
.card h2{margin:4px 0 8px}
.muted{color:var(--muted);font-size:.9rem;margin-top:0}
.more{font-weight:600;text-decoration:none}
.site-footer{border-top:1px solid var(--border);padding:24px 16px;margin-top:40px;background:#fafafa}
.footer-cols{display:flex;gap:40px;flex-wrap:wrap;align-items:flex-start}
.breadcrumb ol{list-style:none;display:flex;gap:8px;padding:0;margin:8px 0 18px}
.breadcrumb a{text-decoration:none;color:#333}
.breadcrumb li::after{content:"›";margin:0 6px;color:#bbb}
.breadcrumb li:last-child::after{content:""}
.prose h1,.prose h2,.prose h3{line-height:1.25}
.prose img{max-width:100%;height:auto;border-radius:10px}
.toc{border:1px solid var(--border);border-radius:10px;padding:12px;margin:16px 0;background:#fff}
.toc h2{margin-top:0}
.toc ul{margin:0;padding-left:18px}
.faq details{border:1px solid var(--border);border-radius:8px;padding:10px;margin:10px 0;background:#fff}
.search-form{display:flex;gap:8px;margin:10px 0}
.search-form input{flex:1;padding:10px;border-radius:8px;border:1px solid var(--border)}
.badge-time{display:inline-block;padding:4px 8px;border:1px dashed var(--border);border-radius:999px;font-size:.85rem;color:var(--muted)}
.related{margin-top:28px;border-top:1px solid var(--border);padding-top:12px}
.archive-list li{margin:6px 0}
@media (prefers-color-scheme: dark){
  :root{--bg:#0b0b0b;--text:#f5f5f5;--muted:#bbb;--border:#222;--brand:#1abc9c}
  .hero{background:#071b17}
  .site-header, .card, .toc, .faq details{background:#111}
  .site-footer{background:#0e0e0e}
}