:root{--bg:#0f0f12;--fg:#f5f7fa;--muted:#a7adba;--accent:#9ef01a}body,html{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;background:var(--bg);color:var(--fg)}a{color:var(--accent);text-decoration:none}.container{max-width:880px;margin:0 auto;padding:24px}.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--accent);color:#0b0d0f;font-weight:700}.card{background:#16181d;border:1px solid #22252b;border-radius:16px;padding:18px;margin:12px 0}hr{border:0;border-top:1px solid #23252b;margin:24px 0}