body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(180deg, #f4efe3, #ebe3d2);
    color: #241c18;
}

.install-shell {
    width: min(920px, calc(100vw - 32px));
    margin: 48px auto;
}

.install-card {
    background: #fffaf2;
    border-radius: 24px;
    padding: 32px;
    box-shadow: 0 18px 40px rgba(36, 28, 24, 0.12);
}

.install-grid {
    display: grid;
    gap: 18px;
}