:root{
  --brand:#0ea5e9;
  --accent:#111827;
  --text:#111;
  --muted:#6b7280;
  --card:#ffffff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:#fff}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #e5e7eb}
.nav{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:24px;padding:14px 20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--accent)}
.brand .logo{width:32px;height:32px;border-radius:6px;background:var(--brand)}
.navlinks{display:flex;gap:16px;color:var(--accent);flex:1}
.search{margin-left:auto;display:flex;gap:8px;align-items:center}
.search input{padding:10px 12px;border-radius:8px;border:1px solid #e5e7eb;min-width:220px}
.container{max-width:1200px;margin:32px auto;padding:0 20px;display:grid;grid-template-columns:2fr 1fr;gap:28px}
.card{background:var(--card);border:1px solid #eee;border-radius:14px;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.04)}
.card .p{padding:18px}
.hero img{width:100%;height:auto;display:block}
.meta{display:flex;gap:12px;color:var(--muted);font-size:14px;margin:8px 0}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:10px 18px;border-radius:10px}
.sidebar .list{display:flex;flex-direction:column}
.item{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid #f1f5f9}
.item img{width:96px;height:64px;object-fit:cover;border-radius:8px}
.footer{margin-top:40px;background:#0f172a;color:#cbd5e1}
.footer .wrap{max-width:1200px;margin:0 auto;padding:24px 20px;display:flex;justify-content:space-between;align-items:center}
.audio-bar{position:fixed;left:0;right:0;bottom:0;background:#0f172a;color:#fff;padding:10px 16px;display:flex;gap:14px;align-items:center;border-top:1px solid #111}
.audio-bar audio{width:280px}
.badge{background:#f8fafc;border:1px solid #e5e7eb;font-size:12px;padding:4px 8px;border-radius:999px;color:#0f172a}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.article{max-width:900px;margin:24px auto;padding:0 20px}
.article h1{color:#0ea5e9;margin:16px 0 4px}
.article h2{color:#111827;margin-top:24px}
.article p{line-height:1.75;margin:14px 0}
.article img{border-radius:12px}
.toc{background:#fafafa;border:1px solid #eee;border-radius:12px;padding:16px;margin:16px 0}
@media (max-width:1024px){.container{grid-template-columns:1fr}.audio-bar audio{width:200px}}