:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;margin:0;padding:0}.shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;background:#f6f7f9;color:#1f1f30;padding:2rem}.env-badge{position:fixed;top:0;left:0;right:0;text-align:center;background:#f59e0b;color:#1f1f30;font-weight:600;padding:.4rem;font-size:.85rem}.card{text-align:center;background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:3rem 2.5rem;box-shadow:0 8px 30px #0000000f}.card h1{font-size:1.75rem;margin-bottom:.5rem}.card p{color:#6b7280}@media(prefers-color-scheme:dark){.shell{background:#14141f;color:#f6f7f9}.card{background:#1f1f30;border-color:#2d2d44}.card p{color:#a1a1b5}}