.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.section {
    padding-block: var(--section-gap);
}

.section--alt {
    background-color: var(--color-off-white);
}

.section--dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.section__header {
    text-align: center;
    max-width: 760px;
    margin-inline: auto;
    margin-bottom: var(--space-12);
}

.section__title {
    font-size: var(--text-4xl);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.section--dark .section__title {
    color: var(--color-white);
}

.section__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 640px;
    margin-inline: auto;
}

.section--dark .section__subtitle {
    color: rgba(255,255,255,0.80);
}

.grid {
    display: grid;
    gap: var(--card-gap);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.grid--sidebar {
    grid-template-columns: 1fr 320px;
    gap: var(--space-10);
    align-items: start;
}

@media (max-width: 1024px) {
    .grid--4 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
    .grid--sidebar { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .grid--2,
    .grid--3,
    .grid--4 { grid-template-columns: 1fr; }
    .section { padding-block: var(--space-12); }
    .section__header { margin-bottom: var(--space-8); }
    .section__subtitle { font-size: var(--text-base); }
}