/* card.css - centered content card and its title */
.card {
    max-width: 840px;
    margin: 20px auto;
    padding: 30px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
}

.card h2 {
    margin: 0 0 20px;
    padding: 12px 0 14px;
    font-size: 1.35rem;
    font-weight: 600;
    border-bottom: 1px solid var(--line);
}

@media (max-width: 640px) {
    .card {
        margin: 12px max(12px, env(safe-area-inset-right, 0px)) 24px max(12px, env(safe-area-inset-left, 0px));
        padding: 16px;
        border-radius: 14px;
    }
    .card h2 { margin-bottom: 16px; padding: 6px 0 12px; font-size: 1.2rem; }
}