:root{--bg:#0b1220;--card:#121a2b;--text:#eef3ff;--muted:#9fb0d0;--accent:#4da3ff;--accent2:#76e6a6;}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.header{padding:64px 24px;text-align:center}.header h1{margin:0;font-size:clamp(32px,6vw,56px);} .nav{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;padding:24px}.nav a{background:var(--card);color:var(--text);padding:12px 16px;border-radius:10px;text-decoration:none;border:1px solid #223052}.nav a:hover{border-color:var(--accent);} .container{max-width:980px;margin:0 auto;padding:24px}.section{background:var(--card);padding:20px;border-radius:14px;margin:16px 0;border:1px solid #223052}.section h2{margin-top:0}.video{display:grid;grid-template-columns:1fr;gap:10px;margin:12px 0}.video iframe{width:100%;aspect-ratio:16/9;border:0;border-radius:10px}.footer{padding:32px;text-align:center;color:var(--muted)}.breadcrumb{color:var(--muted);margin-bottom:8px}.btn{display:inline-block;margin-top:16px;padding:10px 14px;background:var(--accent);color:#041024;border-radius:10px;text-decoration:none;font-weight:600}.btn.secondary{background:var(--accent2)}