:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;--bg:#f6f7f9;--fg:#16181d;--muted:#666c78;--card:#fff;--border:#dfe2e8}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#16181d;--fg:#f2f3f5;--muted:#9aa1ad;--card:#1e2128;--border:#2e323b}}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);margin:0;padding:16px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang HK,Microsoft JhengHei,sans-serif;font-size:15px;line-height:1.5}.centered{justify-content:center;align-items:center;min-height:calc(100vh - 32px);display:flex}.card{border:1px solid var(--border);background:var(--card);border-radius:10px;width:100%;max-width:380px;padding:32px}.card h1{margin:0 0 8px;font-size:20px}.card p{margin:0 0 8px}.muted{color:var(--muted);font-size:14px}button{border:1px solid var(--border);background:var(--fg);width:100%;color:var(--bg);font:inherit;cursor:pointer;border-radius:6px;margin-top:16px;padding:10px 16px;font-weight:500}button:hover{opacity:.88}