:root{--bg:#f6f4f1;--ink:#1a1a1a;--muted:#5c5c5c;--red:#da3a2f;--card:#ffffff;--line:#e4e0db}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif}a{color:var(--red);text-decoration:none}a:hover{text-decoration:underline}.shell{min-height:100vh;display:flex;flex-direction:column}.topbar{align-items:center;justify-content:space-between;padding:14px 24px;background:#111;color:#fff}.topbar,.topbar nav{display:flex;gap:16px}.topbar nav{flex-wrap:wrap}.topbar a{color:#fff}.topbar .brand{font-weight:700;letter-spacing:-.02em;color:#fff}.page{padding:32px 24px 64px;max-width:1100px;width:100%;margin:0 auto}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--red);color:#fff;border:0;border-radius:999px;padding:12px 20px;font-weight:600;cursor:pointer}.btn:hover{text-decoration:none;filter:brightness(1.05)}.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}.muted{color:var(--muted)}