:root{color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{margin:0;min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center}.card{padding:24px;max-width:32rem}h1{font-size:1.5rem;margin:0 0 .5rem}p{font-size:1rem;margin:0;opacity:.9}.links{margin-top:1.25rem;display:flex;gap:1.25rem;justify-content:center}.links a{color:#fff;text-decoration:underline}.spinner{width:40px;height:40px;margin:0 auto 1.25rem;border:4px solid rgb(255 255 255 / .3);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation:none;border-top-color:#ffffff4d}}