html {
    color-scheme: dark;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    background: radial-gradient(circle at top right, #173c2e, transparent 42%), #08110e;
    color: #edf6f2;
    font: 16px/1.6 system-ui, sans-serif;
}

.card {
    max-width: 620px;
    padding: 48px;
    border: 1px solid #31463f;
    border-radius: 22px;
    background: #14201d;
    box-shadow: 0 22px 70px #0007;
}

.mark {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #ecb85f;
    color: #25322e;
    font-weight: 900;
}

h1 {
    margin: 22px 0 8px;
    font-size: clamp(2rem, 6vw, 3.5rem);
    line-height: 1.05;
}

p {
    margin: 0;
    color: #9db2aa;
}