:root{--bg:#0e0f13;--fg:#f5f6f8;--muted:#9aa0aa;--accent:#6c8cff}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}main{max-width:720px;margin:0 auto;padding:4rem 1.5rem}h1{font-size:1.75rem;margin-bottom:.25rem}.muted{color:var(--muted)}a{color:var(--accent)}button{font:inherit;padding:.6rem 1rem;border-radius:8px;border:1px solid #2a2d35;background:#1a1c22;color:var(--fg);cursor:pointer}button:hover{border-color:var(--accent)}