:root{--bg:#0b0d12;--fg:#eaf2ff;--muted:#cbd5e1;--accent:#7aa2ff;--card:#111827;--line:#1f2937;}
.container{max-width:1080px;margin:0 auto;padding:24px}
.nav{display:flex;gap:18px;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line)}
.nav .brand{font-weight:800;letter-spacing:.5px}
.nav .menu a{margin:0 10px}
.footer{margin-top:40px;padding:24px 0;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.banner{position:sticky;bottom:12px;left:12px;right:12px;margin:0 auto;max-width:900px;background:#0e1a2b;border:1px solid #1b2a44;padding:12px 16px;border-radius:12px;display:none;color:#d7e3ff}
.banner.show{display:block}
.small{font-size:.9rem;color:var(--muted)}