:root{--bg:#0f172a;--card:#111827;--text:#e5e7eb;--muted:#9ca3af;--accent:#22d3ee}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,Segoe UI,Roboto,Helvetica,Arial}
.wrap{max-width:1100px;margin:0 auto;padding:24px}
nav{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}
nav a{padding:8px 14px;border-radius:9999px;background:#1f2937;color:#e5e7eb;text-decoration:none}
nav a:hover{background:#374151}
h1{font-size:28px;margin:24px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card{background:var(--card);border:1px solid #1f2937;border-radius:14px;padding:14px}
.card h3{margin:6px 0 10px;font-size:18px}
.card p{margin:0 0 8px;color:var(--muted)}
footer{margin-top:40px;color:var(--muted);font-size:14px}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;background:#0ea5e9;color:white;font-size:12px}
hr{border:none;border-top:1px solid #1f2937;margin:18px 0}
iframe, video, audio{width:100%;border:none;border-radius:10px}
.pdf{aspect-ratio:3/4;height:520px}