/**
 * Empty Leg Index month pages — Apple-style surfaces (copy unchanged).
 * Scoped to .research-page so hub styles stay intact.
 */
.research-page .ep-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 48rem;
}
.research-page .rc-hero--report {
    margin: 0 0 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 0.5px solid var(--rc-line);
}
.research-page .rc-hero--report .rc-title {
    max-width: min(52ch, 100%);
    font-size: clamp(1.7rem, 3.6vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.12;
}
.research-page .rc-hero--report .rc-lede {
    max-width: none;
    margin-top: 0.15rem;
    font-size: 1.0625rem;
    line-height: 1.55;
}
.research-page .rc-panel,
.research-page .rc-takeaways,
.research-page .rc-faq,
.research-page .rc-downloads,
.research-page .rc-cite {
    margin: 0 0 1.75rem;
    padding: 0 0 1.75rem;
    border-radius: 0;
    background: transparent;
    border: none;
    border-bottom: 0.5px solid var(--rc-line);
    box-shadow: none;
}
.research-page .rc-panel__title {
    margin: 0 0 0.55rem;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}
.research-page .rc-panel__lede,
.research-page .rc-takeaways__list,
.research-page .rc-faq__item p,
.research-page .rc-cta__text,
.research-page .rc-caption {
    max-width: none;
}
.research-page .rc-panel__lede {
    font-size: 1rem;
    line-height: 1.65;
    letter-spacing: -0.01em;
}
.research-page .rc-chart-grid {
    gap: 1rem;
    margin: 0 0 1.75rem;
}
.research-page .rc-chart-grid .rc-panel {
    margin: 0;
    padding: 1.2rem 1.25rem 1.25rem;
    border: none;
    border-bottom: none;
    border-radius: 16px;
    background: var(--rc-surface);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.028),
        0 10px 28px rgba(0, 0, 0, 0.04),
        inset 0 0 0 0.5px var(--rc-line);
}
:root[data-theme="dark"] .research-page .rc-chart-grid .rc-panel {
    background: var(--rc-fill);
    box-shadow: inset 0 0 0 0.5px var(--rc-line);
}
.research-page .rc-caption {
    margin: 0.7rem 0 0;
    font-size: 0.8125rem;
    line-height: 1.5;
}
.research-page .rc-takeaways__list {
    margin: 0.95rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 1rem;
    counter-reset: rc-takeaway;
}
.research-page .rc-takeaways__list li {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.95rem;
    align-items: start;
    margin: 0;
    padding: 0.15rem 0;
    font-size: 1.0625rem;
    line-height: 1.65;
    letter-spacing: -0.012em;
    color: var(--rc-text);
    counter-increment: rc-takeaway;
}
.research-page .rc-takeaways__list li::before {
    content: counter(rc-takeaway);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    margin-top: 0.05rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    color: var(--rc-accent-strong);
    background: var(--rc-accent-soft);
}
.research-page .rc-region-grid,
.research-page .rc-route-grid {
    gap: 0.75rem;
    margin-top: 1rem;
}
.research-page .rc-region-card,
.research-page .rc-route-card {
    padding: 1rem 1.05rem;
    border-radius: 14px;
    background: var(--rc-fill);
    border: none;
    box-shadow: inset 0 0 0 0.5px var(--rc-line);
    transition: background 0.15s ease;
}
.research-page .rc-region-card:hover,
.research-page .rc-route-card:hover {
    background: color-mix(in srgb, var(--rc-fill) 70%, var(--rc-accent-soft));
}
.research-page .rc-region-card__title,
.research-page .rc-route-card__title {
    margin: 0 0 0.35rem;
    font-size: 0.96875rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}
.research-page .rc-region-card__meta,
.research-page .rc-route-card__meta {
    font-size: 0.8125rem;
    line-height: 1.45;
}
.research-page .rc-faq__item {
    padding: 0.95rem 0;
}
.research-page .rc-faq__item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.35;
}
.research-page .rc-faq__item summary::-webkit-details-marker {
    display: none;
}
.research-page .rc-faq__item summary::after {
    content: "";
    flex: 0 0 0.55rem;
    width: 0.55rem;
    height: 0.55rem;
    margin-top: -0.15rem;
    border-right: 1.5px solid var(--rc-muted);
    border-bottom: 1.5px solid var(--rc-muted);
    transform: rotate(45deg);
    opacity: 0.7;
    transition: transform 0.18s ease;
}
.research-page .rc-faq__item[open] summary::after {
    margin-top: 0.15rem;
    transform: rotate(225deg);
}
.research-page .rc-faq__item p {
    margin: 0.65rem 0 0.15rem;
    font-size: 0.9375rem;
    line-height: 1.6;
}
.research-page .rc-cta {
    margin: 0 0 1.75rem;
    padding: 1.35rem 1.4rem;
    border-radius: 16px;
    background:
        radial-gradient(
            120% 100% at 0% 0%,
            color-mix(in srgb, var(--rc-accent-soft) 85%, transparent),
            transparent 65%
        ),
        var(--rc-fill);
    border: none;
    box-shadow: inset 0 0 0 0.5px color-mix(in srgb, var(--rc-accent) 22%, var(--rc-line));
}
.research-page .rc-cta__title {
    margin: 0 0 0.4rem;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}
.research-page .rc-cta__text {
    margin: 0 0 1rem;
    font-size: 0.9375rem;
    line-height: 1.55;
}
.research-page .rc-cite .rc-actions,
.research-page .rc-downloads .rc-actions {
    margin-top: 0.95rem;
}
.research-page .rc-month-nav {
    margin: 0.25rem 0 0.5rem;
    padding: 1rem 0 0.25rem;
    border-top: 0.5px solid var(--rc-line);
}
.research-page .rc-month-nav__link {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
    padding: 0.45rem 0.9rem;
    border-radius: 12px;
    background: var(--rc-fill);
    color: var(--rc-text);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}
.research-page .rc-month-nav__link:hover {
    background: color-mix(in srgb, var(--rc-fill) 65%, var(--rc-accent-soft));
    color: var(--rc-accent-strong);
    text-decoration: none;
}
@media (max-width: 639px) {
    .research-page .ep-metrics {
        grid-template-columns: 1fr;
        gap: 0.85rem;
    }
    .research-page .rc-panel,
    .research-page .rc-takeaways,
    .research-page .rc-faq,
    .research-page .rc-downloads,
    .research-page .rc-cite,
    .research-page .rc-month-nav {
        margin-left: 1rem;
        margin-right: 1rem;
    }
    .research-page .rc-panel,
    .research-page .rc-takeaways,
    .research-page .rc-faq,
    .research-page .rc-downloads,
    .research-page .rc-cite {
        padding-bottom: 1.35rem;
    }
    .research-page .rc-chart-grid {
        padding: 0 1rem;
    }
    .research-page .rc-chart-grid .rc-panel {
        border-radius: 14px;
    }
    .research-page .rc-cta {
        margin-inline: 0;
        border-radius: 0;
        border-block: 0.5px solid var(--rc-line);
        box-shadow: none;
    }
    .research-page .rc-month-nav {
        flex-direction: column;
    }
    .research-page .rc-month-nav__link,
    .research-page .rc-month-nav__link--next {
        width: 100%;
        margin-left: 0;
        justify-content: center;
    }
}