/**
 * Research methodology (/research/methodology) — Academy/datasets editorial layout.
 * Scoped to .rc-method-surface so month/hub research chrome stays unchanged.
 */

.seo-flight-shell:has(.rc-method-surface) > .entity-page.content-page {
    background: transparent;
    border-radius: 0;
    box-shadow: none;
}

:root[data-theme="dark"] .seo-flight-shell:has(.rc-method-surface) > .entity-page.content-page {
    box-shadow: none;
}

.rc-method-surface {
    --rc-method-font:
        -apple-system, blinkmacsystemfont, "SF Pro Text", "SF Pro Display",
        system-ui, sans-serif;
    --rc-method-accent: #11877f;
    --rc-method-text: var(--color-text);
    --rc-method-muted: var(--color-text-muted);
    --rc-method-line: var(--color-border-subtle);

    max-width: 1240px;
    margin-inline: auto;
    font-family: var(--rc-method-font);
    -webkit-font-smoothing: antialiased;
    color: var(--rc-method-text);
}

:root[data-theme="dark"] .rc-method-surface {
    --rc-method-accent: #49c8bf;
}

.rc-method-hero {
    padding: clamp(2.5rem, 7vw, 6rem) 0 clamp(2rem, 5vw, 4.5rem);
    border-bottom: 1px solid var(--rc-method-line);
}

.rc-method-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(16rem, 0.8fr);
    gap: clamp(2rem, 6vw, 5.5rem);
    align-items: end;
}

.rc-method-surface .rc-eyebrow {
    margin: 0 0 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--rc-method-muted);
}

.rc-method-title {
    margin: 0;
    max-width: 14ch;
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 520;
    line-height: 0.92;
    letter-spacing: -0.065em;
    color: var(--rc-method-text);
}

.rc-method-hero__copy {
    padding-bottom: 0.25rem;
}

.rc-method-surface .rc-lede {
    margin: 0 0 1.25rem;
    max-width: 40rem;
    font-size: clamp(1.05rem, 1.7vw, 1.3rem);
    line-height: 1.55;
    letter-spacing: -0.015em;
    color: var(--rc-method-muted);
}

.rc-method-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem 1.35rem;
    margin: 0;
}

.rc-method-action {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    font-weight: 650;
    letter-spacing: -0.015em;
    color: var(--rc-method-text);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 160ms ease, border-color 160ms ease;
}

.rc-method-action:hover {
    color: var(--rc-method-accent);
    border-bottom-color: color-mix(in srgb, var(--rc-method-accent) 45%, transparent);
}

.rc-method-action--primary {
    color: var(--rc-method-accent);
}

.rc-method-action span[aria-hidden="true"] {
    font-size: 0.85em;
    opacity: 0.85;
}

.rc-method-track {
    display: grid;
    grid-template-columns: minmax(14rem, 0.4fr) minmax(0, 1fr);
    gap: clamp(2rem, 6vw, 5.5rem);
    padding: clamp(2.5rem, 5.5vw, 4.75rem) 0;
    border-bottom: 1px solid var(--rc-method-line);
}

.rc-method-track__head {
    display: grid;
    grid-template-columns: 2.75rem 1fr;
    gap: 0.85rem;
    align-content: start;
    position: sticky;
    top: 5.5rem;
    align-self: start;
}

.rc-method-track__index {
    margin: 0.35rem 0 0;
    font-size: 0.67rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.06em;
    color: var(--rc-method-muted);
}

.rc-method-track__title {
    margin: 0;
    max-width: 14ch;
    font-size: clamp(1.55rem, 2.6vw, 2.35rem);
    font-weight: 540;
    line-height: 1.08;
    letter-spacing: -0.045em;
    color: var(--rc-method-text);
}

.rc-method-track__text {
    margin: 0;
    max-width: 46rem;
    font-size: 1.02rem;
    line-height: 1.65;
    letter-spacing: -0.01em;
    color: var(--rc-method-muted);
}

@media (max-width: 760px) {
    .rc-method-hero__grid,
    .rc-method-track {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .rc-method-track__head {
        position: static;
    }

    .rc-method-title,
    .rc-method-track__title {
        max-width: none;
    }
}

@media (max-width: 639px) {
    .seo-flight-shell:has(.rc-method-surface) {
        max-width: none;
        padding-inline: 0;
    }

    .research-page:has(.rc-method-surface) {
        padding-inline: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .rc-method-action {
        transition: none;
    }
}