:root {
    --ink: #1d2330;
    --muted: #6b7280;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    background: radial-gradient(circle at 20% 10%, #1b2a4a, #0d1220 62%);
    color: var(--ink);
    font: 16px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.card {
    width: 100%;
    max-width: 720px;
    padding: 20px 20px 34px;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(8, 14, 30, 0.45);
    text-align: center;
}

.hero {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 12px;
    background: #141d33;
}

h1 {
    margin: 26px 0 10px;
    font-size: clamp(22px, 3vw, 30px);
    letter-spacing: -0.2px;
}

p {
    margin: 0 0 6px;
}

.muted {
    color: var(--muted);
    font-size: 15px;
}