/* Explain: Layout utilities and structure for different sections and shell. */
.shell {
    width: 100%;
    max-width: 1240px;
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.section {
    padding-block: clamp(4rem, 9vw, 8rem);
}

.section--surface {
    background: var(--surface-color);
}

.section--alt {
    background: var(--surface-alt);
}

.section--dark {
    background: #0d0d0d;
    color: #ffffff;
}

.section--dark .section-title,
.section--dark h1,
.section--dark h2,
.section--dark h3 {
    color: #ffffff;
}

.section--dark .eyebrow {
    color: rgba(255, 255, 255, 0.6);
}

.section-head {
    max-width: 42rem;
}

.section-head--center {
    margin-inline: auto;
    text-align: center;
}

@media (max-width: 640px) {
    .shell {
        padding-inline: 1.25rem;
    }
}