/**
 * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 *
 * HGDP K72 report-aligned product page visual system and responsive layout.
 */

:root {
    --k72-canvas: #080d1d;
    --k72-raised: #0d1429;
    --k72-surface: #121c36;
    --k72-elevated: #18254a;
    --k72-strong: #202f59;
    --k72-text: #f4f7ff;
    --k72-muted: #b5c0d9;
    --k72-subtle: #8795b3;
    --k72-border: #2d3d68;
    --k72-border-strong: #4d6397;
    --k72-primary: #6e8bff;
    --k72-primary-strong: #9db1ff;
    --k72-focus: #c9d3ff;
    --k72-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
    --k72-font-display: "Cormorant Garamond", Georgia, serif;
    --k72-font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --k72-content-width: 1180px;
    --k72-navbar-clearance: 80px;
    --k72-region-europe: #7892ff;
    --k72-region-east-asia: #e1788a;
    --k72-region-south-asia: #e59c70;
    --k72-region-africa: #58b58a;
    --k72-region-americas: #b083dd;
    --k72-region-middle-east: #d5b25f;
    --k72-region-oceania: #55b8bd;
}

.k72-main {
    min-height: 100vh;
    padding-top: var(--k72-navbar-clearance);
    overflow-x: clip;
    background: var(--k72-canvas);
    color: var(--k72-text);
    font-family: var(--k72-font-body);
    font-size: 1rem;
    line-height: 1.7;
}

.k72-main *,
.k72-main *::before,
.k72-main *::after,
.k72-sticky-cta *,
.k72-mobile-nav * {
    box-sizing: border-box;
}

.k72-main .container,
.k72-related-products {
    width: min(100% - 48px, var(--k72-content-width));
    max-width: var(--k72-content-width);
    margin-inline: auto;
    padding-inline: 0;
}

.k72-main h1,
.k72-main h2,
.k72-main h3,
.k72-main h4,
.k72-related-products h3,
.k72-related-products h4 {
    margin-top: 0;
    color: var(--k72-text);
    font-family: var(--k72-font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.k72-main p,
.k72-main ul,
.k72-main dl {
    margin-top: 0;
}

.k72-main a,
.k72-sticky-cta a,
.k72-mobile-nav a {
    text-underline-offset: 0.2em;
}

.k72-main a:focus-visible,
.k72-main button:focus-visible,
.k72-main summary:focus-visible,
.k72-page-nav a:focus-visible,
.k72-mobile-nav a:focus-visible,
.k72-sticky-cta a:focus-visible,
.k72-skip-link:focus-visible {
    outline: 3px solid var(--k72-focus);
    outline-offset: 4px;
}

.k72-main section[id],
.k72-main .rpc-pricing-section[id] {
    scroll-margin-top: calc(var(--k72-navbar-clearance) + 12px);
}

.k72-skip-link {
    position: fixed;
    z-index: 1200;
    top: 12px;
    left: 12px;
    padding: 12px 18px;
    border: 1px solid var(--k72-primary-strong);
    background: var(--k72-text);
    color: var(--k72-canvas);
    font: 700 0.875rem/1 var(--k72-font-body);
    transform: translateY(-160%);
}

.k72-skip-link:focus {
    transform: translateY(0);
}

.k72-scroll-progress {
    position: fixed;
    z-index: 1100;
    top: 0;
    right: 0;
    left: 0;
    height: 3px;
    background: var(--k72-primary);
    transform: scaleX(0);
    transform-origin: left center;
    pointer-events: none;
}

.k72-page-nav {
    position: fixed;
    z-index: 900;
    top: 50%;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    transform: translateY(-50%);
}

.k72-nav-dot {
    position: relative;
    display: block;
    width: 10px;
    height: 10px;
    border: 1px solid var(--k72-border-strong);
    background: var(--k72-raised);
}

.k72-nav-dot::after {
    position: absolute;
    top: 50%;
    right: 20px;
    width: max-content;
    padding: 5px 8px;
    border: 1px solid var(--k72-border);
    background: var(--k72-surface);
    color: var(--k72-text);
    content: attr(data-tooltip);
    font: 600 0.72rem/1 var(--k72-font-body);
    letter-spacing: 0.04em;
    pointer-events: none;
    transform: translateY(-50%);
    visibility: hidden;
}

.k72-nav-dot:hover::after,
.k72-nav-dot:focus-visible::after {
    visibility: visible;
}

.k72-nav-dot.active {
    border-color: var(--k72-primary-strong);
    background: var(--k72-primary);
}

.k72-eyebrow,
.k72-card-kicker {
    display: inline-flex;
    align-items: center;
    color: var(--k72-primary-strong);
    font-family: var(--k72-font-body);
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    line-height: 1.4;
    text-transform: uppercase;
}

.k72-card-kicker {
    display: block;
    margin-bottom: 6px;
    color: var(--k72-subtle);
    font-size: 0.67rem;
}

.k72-hero {
    min-height: 640px;
    border-bottom: 1px solid var(--k72-border);
    background: var(--k72-raised);
}

.k72-hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
    align-items: center;
    gap: 64px;
    min-height: 640px;
    padding-block: 80px;
}

.k72-hero-copy {
    max-width: 760px;
}

.k72-hero h1 {
    max-width: 15ch;
    margin: 18px 0 22px;
    font-size: clamp(3.25rem, 5.7vw, 4.75rem);
    line-height: 0.98;
}

.k72-hero-description {
    max-width: 720px;
    margin-bottom: 28px;
    color: var(--k72-muted);
    font-size: 1.05rem;
}

.k72-hero-offer {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px 14px;
    max-width: 380px;
    margin: 0 0 24px;
    padding: 14px 18px;
    border-left: 3px solid var(--k72-primary);
    background: var(--k72-surface);
}

.k72-hero-offer-label,
.k72-hero-offer-note {
    color: var(--k72-subtle);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.k72-hero-offer-price {
    grid-row: span 2;
    align-self: center;
    color: var(--k72-text);
    font: 700 1.65rem/1 var(--k72-font-display);
}

.k72-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.k72-button {
    display: inline-flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    padding: 13px 22px;
    border: 1px solid transparent;
    border-radius: 0;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.k72-button:hover {
    text-decoration: none;
}

.k72-button-primary {
    border-color: var(--k72-primary);
    background: var(--k72-primary);
    color: var(--k72-canvas);
}

.k72-button-primary:hover {
    border-color: var(--k72-primary-strong);
    background: var(--k72-primary-strong);
    color: var(--k72-canvas);
}

.k72-button-secondary {
    border-color: var(--k72-border-strong);
    background: transparent;
    color: var(--k72-text);
}

.k72-button-secondary:hover {
    border-color: var(--k72-primary-strong);
    background: var(--k72-surface);
    color: var(--k72-text);
}

.k72-trust-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 22px;
    margin: 24px 0 0;
    padding: 0;
    color: var(--k72-subtle);
    font-size: 0.78rem;
    font-weight: 600;
    list-style: none;
}

.k72-trust-list li {
    display: flex;
    align-items: center;
    gap: 7px;
}

.k72-trust-list .dna-icon {
    color: var(--k72-primary-strong);
}

.k72-hero-snapshot {
    width: 100%;
    max-width: 340px;
    justify-self: end;
    padding: 32px;
    border: 1px solid var(--k72-border);
    border-top: 3px solid var(--k72-primary);
    background: var(--k72-surface);
    box-shadow: var(--k72-shadow);
}

.k72-hero-snapshot-label {
    display: block;
    margin-bottom: 10px;
    color: var(--k72-subtle);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.k72-hero-snapshot-value {
    display: block;
    color: var(--k72-text);
    font: 600 clamp(4.5rem, 8vw, 6.75rem)/0.9 var(--k72-font-display);
}

.k72-hero-snapshot-name {
    display: block;
    margin: 8px 0 26px;
    color: var(--k72-muted);
    font-size: 0.92rem;
}

.k72-hero-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    margin: 0 0 22px;
    background: var(--k72-border);
}

.k72-hero-metrics div {
    display: flex;
    min-height: 88px;
    flex-direction: column-reverse;
    justify-content: space-between;
    padding: 14px;
    background: var(--k72-elevated);
}

.k72-hero-metrics dt {
    color: var(--k72-subtle);
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.35;
}

.k72-hero-metrics dd {
    margin: 0;
    color: var(--k72-text);
    font: 600 1.75rem/1 var(--k72-font-display);
}

.k72-snapshot-link,
.k72-text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--k72-primary-strong);
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
}

.k72-snapshot-link:hover,
.k72-text-link:hover {
    color: var(--k72-text);
    text-decoration: underline;
}

.k72-section {
    padding-block: clamp(72px, 8vw, 112px);
}

.k72-section-heading {
    max-width: 800px;
    margin-bottom: 48px;
}

.k72-section-heading--compact {
    margin-bottom: 30px;
}

.k72-section-heading h2 {
    margin: 12px 0 16px;
    font-size: clamp(2.5rem, 4.8vw, 4rem);
    line-height: 1.04;
}

.k72-section-heading p {
    max-width: 680px;
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 1rem;
}

.k72-section-coverage,
.k72-section-faq {
    background: var(--k72-canvas);
}

.k72-section-report {
    border-block: 1px solid var(--k72-border);
    background: var(--k72-raised);
}

.k72-dataset-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.k72-dataset-card {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 20px;
    min-height: 260px;
    padding: 28px;
    border: 1px solid var(--k72-border);
    background: var(--k72-surface);
}

.k72-dataset-card > .dna-icon,
.k72-feature-card > .dna-icon {
    color: var(--k72-primary-strong);
    font-size: 1.65rem;
}

.k72-dataset-card h3,
.k72-panel-header h3,
.k72-interpretation-panel h3 {
    margin: 0 0 10px;
    font-size: clamp(1.7rem, 3vw, 2.2rem);
    line-height: 1.08;
}

.k72-dataset-card p {
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 0.9rem;
}

.k72-dataset-card dl {
    grid-column: 2;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    margin-bottom: 0;
    background: var(--k72-border);
}

.k72-dataset-card dl div {
    padding: 12px 14px;
    background: var(--k72-elevated);
}

.k72-dataset-card dt {
    color: var(--k72-subtle);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.k72-dataset-card dd {
    margin: 4px 0 0;
    color: var(--k72-text);
    font: 600 1.35rem/1 var(--k72-font-display);
}

.k72-reference-panel,
.k72-interpretation-panel {
    padding: clamp(28px, 5vw, 48px);
    border: 1px solid var(--k72-border);
    background: var(--k72-surface);
    box-shadow: var(--k72-shadow);
}

.k72-panel-header {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 40px;
    align-items: end;
    margin-bottom: 32px;
}

.k72-panel-header p {
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 0.88rem;
}

.k72-region-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
}

.k72-region-card {
    --k72-region-color: var(--k72-primary);
    display: flex;
    min-height: 104px;
    flex-direction: column;
    justify-content: flex-end;
    padding: 16px;
    border: 1px solid var(--k72-border);
    border-bottom: 3px solid var(--k72-region-color);
    background: var(--k72-elevated);
}

.k72-region-card span {
    color: var(--k72-text);
    font: 600 1.2rem/1.1 var(--k72-font-display);
}

.k72-region-card strong {
    margin-top: 6px;
    color: var(--k72-subtle);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.k72-region-card--europe { --k72-region-color: var(--k72-region-europe); }
.k72-region-card--east-asia { --k72-region-color: var(--k72-region-east-asia); }
.k72-region-card--south-asia { --k72-region-color: var(--k72-region-south-asia); }
.k72-region-card--africa { --k72-region-color: var(--k72-region-africa); }
.k72-region-card--americas { --k72-region-color: var(--k72-region-americas); }
.k72-region-card--middle-east { --k72-region-color: var(--k72-region-middle-east); }
.k72-region-card--oceania { --k72-region-color: var(--k72-region-oceania); }

.k72-population-disclosures,
.k72-faq-list {
    margin-top: 28px;
    border-top: 1px solid var(--k72-border);
}

.k72-disclosure {
    border-bottom: 1px solid var(--k72-border);
    background: transparent;
}

.k72-disclosure summary {
    display: flex;
    min-height: 58px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 4px;
    color: var(--k72-text);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    list-style: none;
}

.k72-disclosure summary::-webkit-details-marker {
    display: none;
}

.k72-disclosure summary .dna-icon {
    flex: 0 0 auto;
    color: var(--k72-primary-strong);
    transition: transform 160ms ease;
}

.k72-disclosure[open] summary .dna-icon {
    transform: rotate(180deg);
}

.k72-disclosure p {
    max-width: 930px;
    margin: 0;
    padding: 0 40px 20px 4px;
    color: var(--k72-muted);
    font-size: 0.88rem;
}

.k72-feature-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.k72-feature-card {
    min-height: 260px;
    padding: 24px;
    border: 1px solid var(--k72-border);
    border-bottom: 3px solid var(--k72-primary);
    background: var(--k72-elevated);
}

.k72-feature-card .k72-card-kicker {
    margin-top: 34px;
}

.k72-feature-card h3 {
    margin: 0 0 10px;
    font-size: 1.55rem;
    line-height: 1.08;
}

.k72-feature-card p {
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 0.84rem;
}

.k72-method-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    margin: 0 0 28px;
    background: var(--k72-border);
}

.k72-method-grid article {
    min-height: 210px;
    padding: 24px;
    background: var(--k72-elevated);
}

.k72-method-grid .dna-icon {
    color: var(--k72-primary-strong);
    font-size: 1.25rem;
}

.k72-method-grid h4 {
    margin: 20px 0 8px;
    font-size: 1.25rem;
    line-height: 1.15;
}

.k72-method-grid p {
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 0.82rem;
}

.rpc-pricing-section.k72-pricing-section {
    --rpc-bg: var(--k72-surface);
    --rpc-overlay: rgba(18, 28, 54, 0.96);
    --rpc-text-primary: var(--k72-text);
    --rpc-text-secondary: var(--k72-muted);
    --rpc-text-muted: var(--k72-subtle);
    --rpc-accent: var(--k72-primary-strong);
    --rpc-accent-dim: var(--k72-primary);
    --rpc-cta-bg: var(--k72-primary);
    --rpc-cta-text: var(--k72-canvas);
    --rpc-cta-hover: var(--k72-primary-strong);
    --rpc-border: var(--k72-border);
    --rpc-font-display: var(--k72-font-display);
    --rpc-font-body: var(--k72-font-body);
    border-block: 1px solid var(--k72-border);
    background: var(--k72-surface);
}

.k72-pricing-section .rpc-pricing-bg {
    display: none;
}

.k72-pricing-section .rpc-pricing-overlay {
    background: rgba(18, 28, 54, 0.96);
}

.k72-pricing-section .rpc-pricing-content {
    max-width: 860px;
}

.k72-pricing-section .rpc-pricing-heading {
    font-size: clamp(2.6rem, 5vw, 4rem);
    font-weight: 600;
}

.k72-pricing-section .rpc-pricing-lead {
    font-family: var(--k72-font-body);
    font-size: 1rem;
    font-style: normal;
}

.k72-pricing-section .rpc-pricing-cta-btn,
.k72-pricing-section .rpc-pricing-alt-link {
    border-radius: 0;
}

.k72-pricing-section .rpc-pricing-cta-btn {
    border: 1px solid var(--k72-primary);
    transition: background-color 160ms ease, border-color 160ms ease;
}

.k72-pricing-section .rpc-pricing-cta-btn:hover {
    border-color: var(--k72-primary-strong);
    box-shadow: none;
    transform: none;
}

.k72-pricing-section .rpc-pricing-alt-link {
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.k72-section-faq .container {
    max-width: 900px;
}

.k72-faq-list {
    margin-top: 0;
}

.k72-faq-list .k72-disclosure summary {
    min-height: 72px;
    font-size: 0.98rem;
}

.k72-bundle-note {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 14px;
    margin-top: 28px;
    padding: 20px;
    border: 1px solid var(--k72-border);
    background: var(--k72-surface);
}

.k72-bundle-note .dna-icon {
    margin-top: 4px;
    color: var(--k72-primary-strong);
}

.k72-bundle-note p {
    margin-bottom: 0;
    color: var(--k72-muted);
    font-size: 0.86rem;
}

.k72-bundle-note strong {
    color: var(--k72-text);
}

.k72-related-products {
    padding-block: clamp(64px, 8vw, 104px);
}

.k72-related-title {
    margin-bottom: 30px;
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    text-align: center;
}

.k72-related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.k72-related-card {
    display: grid;
    grid-template-rows: 180px 1fr;
    overflow: hidden;
    border: 1px solid var(--k72-border);
    background: var(--k72-surface);
}

.k72-related-img {
    display: block;
    width: 100%;
    height: 100%;
    border-bottom: 1px solid var(--k72-border);
    object-fit: cover;
}

.k72-related-content {
    display: flex;
    min-height: 235px;
    flex-direction: column;
    padding: 24px;
}

.k72-related-content h4 {
    margin: 0 0 10px;
    font-size: 1.45rem;
    line-height: 1.12;
}

.k72-related-content p {
    margin-bottom: 20px;
    color: var(--k72-muted);
    font-size: 0.84rem;
    line-height: 1.6;
}

.k72-related-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    color: var(--k72-primary-strong);
    font-size: 0.82rem;
    font-weight: 700;
    text-decoration: none;
}

.k72-related-link:hover {
    color: var(--k72-text);
    text-decoration: underline;
}

.k72-sticky-cta {
    position: fixed;
    z-index: 1000;
    right: 0;
    bottom: 0;
    left: 0;
    border-top: 1px solid var(--k72-border-strong);
    background: rgba(13, 20, 41, 0.97);
    color: var(--k72-text);
    font-family: var(--k72-font-body);
    pointer-events: none;
    transform: translateY(110%);
    transition: transform 180ms ease;
    visibility: hidden;
}

.k72-sticky-cta.visible {
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
}

.k72-sticky-content {
    display: flex;
    width: min(100% - 48px, var(--k72-content-width));
    min-height: 74px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-inline: auto;
    padding-block: 10px;
}

.k72-sticky-info {
    display: flex;
    flex-direction: column;
}

.k72-sticky-info span {
    color: var(--k72-muted);
    font-size: 0.75rem;
}

.k72-sticky-info strong,
.k72-sticky-info strong span {
    color: var(--k72-text);
    font-size: 0.9rem;
}

.k72-sticky-cta .k72-button {
    min-height: 44px;
    padding-block: 10px;
}

.k72-mobile-nav {
    display: none;
}

@media (max-width: 1240px) {
    .k72-page-nav {
        display: none;
    }
}

@media (max-width: 991.98px) {
    :root {
        --k72-navbar-clearance: 72px;
    }

    .k72-hero,
    .k72-hero-layout {
        min-height: auto;
    }

    .k72-hero-layout {
        grid-template-columns: 1fr;
        gap: 44px;
        padding-block: 64px;
    }

    .k72-hero-copy {
        max-width: none;
    }

    .k72-hero h1 {
        max-width: 17ch;
    }

    .k72-hero-snapshot {
        max-width: none;
        justify-self: stretch;
    }

    .k72-region-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .k72-feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .k72-feature-card {
        min-height: 230px;
    }

    .k72-related-grid {
        grid-template-columns: 1fr;
    }

    .k72-related-card {
        grid-template-columns: minmax(220px, 0.45fr) minmax(0, 0.55fr);
        grid-template-rows: 1fr;
    }

    .k72-related-img {
        border-right: 1px solid var(--k72-border);
        border-bottom: 0;
    }

    .k72-related-content {
        min-height: 210px;
    }
}

@media (max-width: 767.98px) {
    :root {
        --k72-navbar-clearance: 64px;
    }

    .k72-main {
        padding-bottom: calc(70px + env(safe-area-inset-bottom));
    }

    .k72-main .container,
    .k72-related-products {
        width: min(100% - 32px, var(--k72-content-width));
    }

    .k72-hero-layout {
        gap: 36px;
        padding-block: 52px;
    }

    .k72-hero h1 {
        margin-top: 16px;
        font-size: clamp(2.7rem, 13vw, 3.8rem);
    }

    .k72-hero-description {
        font-size: 0.95rem;
    }

    .k72-hero-actions,
    .k72-button {
        width: 100%;
    }

    .k72-hero-offer {
        max-width: none;
    }

    .k72-trust-list {
        display: grid;
        grid-template-columns: 1fr;
        gap: 9px;
    }

    .k72-hero-snapshot {
        padding: 26px;
    }

    .k72-section {
        padding-block: 68px;
    }

    .k72-section-heading {
        margin-bottom: 34px;
    }

    .k72-section-heading h2 {
        font-size: clamp(2.35rem, 11vw, 3.2rem);
    }

    .k72-dataset-grid,
    .k72-panel-header,
    .k72-method-grid {
        grid-template-columns: 1fr;
    }

    .k72-dataset-card {
        grid-template-columns: 34px 1fr;
        min-height: 0;
        padding: 22px;
    }

    .k72-panel-header {
        gap: 14px;
        align-items: start;
    }

    .k72-region-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .k72-region-card {
        min-height: 96px;
    }

    .k72-feature-grid {
        grid-template-columns: 1fr;
    }

    .k72-feature-card {
        min-height: 0;
    }

    .k72-feature-card .k72-card-kicker {
        margin-top: 24px;
    }

    .k72-method-grid article {
        min-height: 0;
    }

    .k72-related-card {
        grid-template-columns: 1fr;
        grid-template-rows: 160px 1fr;
    }

    .k72-related-img {
        border-right: 0;
        border-bottom: 1px solid var(--k72-border);
    }

    .k72-related-content {
        min-height: 220px;
    }

    .k72-mobile-nav {
        position: fixed;
        z-index: 1050;
        right: 0;
        bottom: 0;
        left: 0;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
        min-height: calc(64px + env(safe-area-inset-bottom));
        padding-bottom: env(safe-area-inset-bottom);
        border-top: 1px solid var(--k72-border-strong);
        background: rgba(13, 20, 41, 0.98);
        color: var(--k72-muted);
        font-family: var(--k72-font-body);
    }

    .k72-mobile-nav a {
        display: flex;
        min-width: 0;
        min-height: 64px;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 5px;
        padding: 8px 4px;
        border-right: 1px solid var(--k72-border);
        color: inherit;
        font-size: 0.66rem;
        font-weight: 600;
        line-height: 1;
        text-decoration: none;
    }

    .k72-mobile-nav a:last-child {
        border-right: 0;
    }

    .k72-mobile-nav a.active {
        background: var(--k72-strong);
        color: var(--k72-text);
    }

    .k72-mobile-nav .dna-icon {
        color: var(--k72-primary-strong);
        font-size: 1.05rem;
    }

    .k72-sticky-cta {
        bottom: calc(64px + env(safe-area-inset-bottom));
    }

    .k72-sticky-content {
        width: min(100% - 24px, var(--k72-content-width));
        min-height: 68px;
        gap: 12px;
    }

    .k72-sticky-info span {
        display: none;
    }

    .k72-sticky-info strong,
    .k72-sticky-info strong span {
        display: block;
        font-size: 0.76rem;
        line-height: 1.3;
    }

    .k72-sticky-cta .k72-button {
        width: auto;
        min-width: 128px;
        padding-inline: 14px;
        font-size: 0.78rem;
    }
}

@media (max-width: 420px) {
    .k72-region-grid,
    .k72-dataset-card dl {
        grid-template-columns: 1fr;
    }

    .k72-dataset-card dl {
        gap: 0;
        border: 1px solid var(--k72-border);
        background: transparent;
    }

    .k72-dataset-card dl div + div {
        border-top: 1px solid var(--k72-border);
    }

    .k72-sticky-info {
        display: none;
    }

    .k72-sticky-cta .k72-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .k72-button,
    .k72-disclosure summary .dna-icon,
    .k72-pricing-section .rpc-pricing-cta-btn,
    .k72-pricing-section .rpc-pricing-alt-link,
    .k72-sticky-cta {
        transition: none;
    }
}

@media print {
    .k72-main {
        padding: 0;
        background: #ffffff;
        color: #111111;
    }

    .k72-page-nav,
    .k72-mobile-nav,
    .k72-scroll-progress,
    .k72-sticky-cta,
    .k72-hero-actions,
    .k72-pricing-section {
        display: none !important;
    }
}