:root {
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    background: #f3f3f3;
    color: #111;
}

.center {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.card {
    width: min(560px, 100%);
    text-align: center;
    background: white;
    border: 1px solid #e6e6e6;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

h1 {
    margin: 0 0 12px;
    font-size: 1.4rem;
    font-weight: 700;
}

p {
    margin: 0 0 16px;
    color: #444;
}

.mail {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 999px;
    background: #111;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}

.mail:hover {
    background: #2a2a2a;
}