body {
    min-height: 100vh;
    background: #f5f7fb;
}

main {
    display: block;
}

.container {
    width: min(calc(100% - 52px), var(--container-width));
    margin: 0 auto;
}

.container--narrow {
    width: min(calc(100% - 52px), var(--container-narrow));
    margin: 0 auto;
}

.section {
    padding: 42px 0;
}

main > .section {
    content-visibility: auto;
    contain-intrinsic-size: 1px 760px;
}

.section--muted {
    background: rgba(238, 242, 248, 0.64);
}

.section--tight {
    padding-top: 30px;
    padding-bottom: 30px;
}

.section-head {
    display: grid;
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

.grid,
.card-grid {
    display: grid;
    gap: var(--space-16);
}

.grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3,
.card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split-layout {
    display: grid;
    grid-template-columns: 1.06fr 0.94fr;
    gap: var(--space-24);
    align-items: start;
}

.panel {
    padding: 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: #ffffff;
    box-shadow: var(--shadow-soft);
}

.page-hero {
    padding-top: var(--space-20);
    padding-bottom: var(--space-24);
}

.page-hero__content {
    display: grid;
    gap: 10px;
    max-width: 900px;
}

.page-hero__content .hero__actions {
    margin-top: 2px;
}

.planner-support,
.contact-map,
.contact-form-placeholder,
.planner-status {
    margin-top: var(--space-24);
}

.detail-stack {
    display: grid;
    gap: var(--space-12);
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    align-items: stretch;
}

.quick-grid__column {
    padding: 14px;
    border-radius: var(--radius-md);
    background: #ffffff;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    min-height: 100%;
    transition: border-color var(--duration-base) var(--easing-standard), box-shadow var(--duration-base) var(--easing-standard);
}

.quick-grid__column:hover,
.quick-grid__column:focus-within {
    border-color: rgba(11, 31, 58, 0.2);
    box-shadow: var(--shadow-lift);
}

.quick-grid__title {
    margin-bottom: 8px;
    color: var(--color-ocean-900);
    line-height: 1.15;
}

.quick-grid__list {
    display: grid;
    gap: 9px;
    margin-top: auto;
}

.quick-grid__list li {
    color: var(--color-text-soft);
    padding-left: 12px;
    position: relative;
}

.quick-grid__list li::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-gold-500);
    position: absolute;
    left: 0;
    top: 9px;
}

#contact-module {
    padding-top: 24px;
}

.section-title--wide {
    max-width: 28ch;
}

.page-title--single {
    max-width: none;
    white-space: nowrap;
}

.section-text--inline-desktop {
    max-width: 34ch;
    white-space: nowrap;
}

#explore-details {
    margin-top: 12px;
}

.panel h3 + .detail-stack {
    margin-top: 12px;
}

.operating-principles-grid {
    align-items: stretch;
    gap: 12px;
}

.operating-principle-card {
    min-height: 100%;
}

.operating-principle-card .quick-grid__list {
    margin-top: 6px;
}

.planner-advantages {
    margin-top: 12px;
}