.app{flex-direction:column;gap:2rem;display:flex}.app-header h1{color:#1a1a2e;font-size:2.5rem}.app-header .subtitle{color:#6c757d;margin-top:.25rem;font-size:.9rem}.app-main{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 2px 8px #00000014}.message p{color:#6c757d;margin-bottom:.5rem;font-size:.9rem}.message h2{color:#16213e;font-size:2rem}.error{color:#dc3545}.error p{margin-bottom:.5rem;font-weight:700}.error code{background:#fff3f3;border-radius:4px;padding:.25rem .5rem;font-size:.85rem}:root{color:#213547;background-color:#f8f9fa;font-family:system-ui,-apple-system,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}body{justify-content:center;place-items:center;min-height:100vh;display:flex}#root{text-align:center;width:100%;max-width:640px;margin:0 auto;padding:2rem}