*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #1f2937;
    background: #f8fafc;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
}

main {
    text-align: center;
    padding: 32px;
    max-width: 480px;
}

h1 {
    margin: 0 0 12px;
    font-size: clamp(22px, 4vw, 30px);
    font-weight: 600;
    letter-spacing: -0.01em;
}

p {
    margin: 0;
    font-size: 15px;
    color: #6b7280;
}