/** * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 * 
 * Deep Ancestry Product Page - Cinematic Redesign
 * A contemplative, narrative-driven design evoking deep time, universality, and shared human origin.
 */

/* ========================================
   Deep Ancestry Design System
   ======================================== */
:root {
    /* Contemplative Earth Palette */
    --da-obsidian: #0D0D0F;
    --da-slate: #1A1C1E;
    --da-stone: #2A2D31;
    --da-earth: #3D3A36;
    --da-sand: #A89F91;
    --da-bone: #E8E4DC;
    --da-ivory: #F5F3EF;
    --da-amber: #C4956A;
    --da-copper: #8B6D4F;
    
    /* Typography */
    --da-font-display: 'Cormorant Garamond', Georgia, serif;
    --da-font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --da-font-accent: 'Josefin Sans', sans-serif;
    
    /* Spacing */
    --da-section-padding: clamp(80px, 12vh, 140px);
    --da-content-width: 800px;
    --da-wide-width: 1100px;
    
    /* Transitions */
    --da-transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    --da-transition-medium: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --da-transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Base & Reset
   ======================================== */
.da-page {
    background-color: var(--da-obsidian);
    color: var(--da-ivory);
    font-family: var(--da-font-body);
    font-size: 18px;
    line-height: 1.8;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.da-page *,
.da-page *::before,
.da-page *::after {
    box-sizing: border-box;
}

/* ========================================
   Skip Link (Accessibility)
   ======================================== */
.da-skip-link {
    position: absolute;
    top: -100px;
    left: 16px;
    background: var(--da-amber);
    color: var(--da-obsidian);
    padding: 12px 24px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    z-index: 10000;
    transition: top var(--da-transition-fast);
}

.da-skip-link:focus {
    top: 16px;
}

/* ========================================
   Page Navigation Dots
   ======================================== */
.da-page-nav {
    position: fixed;
    right: 32px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: none;
}

@media (min-width: 1200px) {
    .da-page-nav {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }
}

.da-nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(168, 159, 145, 0.3);
    border: 1px solid var(--da-sand);
    transition: all var(--da-transition-fast);
    position: relative;
    cursor: pointer;
}

.da-nav-dot:hover,
.da-nav-dot.active {
    background: var(--da-amber);
    border-color: var(--da-amber);
    transform: scale(1.3);
}

.da-nav-dot::after {
    content: attr(data-tooltip);
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--da-stone);
    color: var(--da-bone);
    padding: 8px 16px;
    border-radius: 4px;
    white-space: nowrap;
    font-size: 0.8125rem;
    font-family: var(--da-font-body);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--da-transition-fast);
}

.da-nav-dot:hover::after {
    opacity: 1;
}

/* ========================================
   Scroll Progress Indicator
   ======================================== */
.da-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--da-copper), var(--da-amber));
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ========================================
   Section Base
   ======================================== */
.da-section {
    padding: var(--da-section-padding) 24px;
    position: relative;
}

.da-section-content {
    max-width: var(--da-content-width);
    margin: 0 auto;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.da-section-wide {
    max-width: var(--da-wide-width);
    margin: 0 auto;
}

/* ========================================
   Typography
   ======================================== */
.da-heading-1 {
    font-family: var(--da-font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--da-ivory);
    margin: 0 0 1.5rem;
}

.da-heading-2 {
    font-family: var(--da-font-display);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--da-ivory);
    margin: 0 0 1.5rem;
}

.da-heading-3 {
    font-family: var(--da-font-display);
    font-size: clamp(1.375rem, 2.5vw, 1.75rem);
    font-weight: 500;
    line-height: 1.35;
    color: var(--da-bone);
    margin: 0 0 1rem;
}

.da-body-large {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--da-ivory);
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--da-ivory);
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-label {
    font-family: var(--da-font-accent);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--da-amber);
}

/* ========================================
   Hero Section
   ======================================== */
.da-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.da-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.da-hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.4;
    filter: saturate(0.6) brightness(0.5);
}

.da-hero-overlay {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(180deg, 
            rgba(13, 13, 15, 0.7) 0%, 
            rgba(13, 13, 15, 0.4) 40%, 
            rgba(13, 13, 15, 0.6) 70%, 
            rgba(13, 13, 15, 0.95) 100%
        );
}

.da-hero-texture {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.da-hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.da-hero-label {
    margin-bottom: 2rem;
    opacity: 0;
    animation: da-fade-in 1s ease-out 0.3s forwards;
}

.da-hero-title {
    font-family: var(--da-font-display);
    font-size: clamp(2.75rem, 7vw, 5rem);
    font-weight: 400;
    font-style: italic;
    line-height: 1.1;
    color: var(--da-ivory);
    margin: 0 0 2rem;
    opacity: 0;
    animation: da-fade-in-up 1s ease-out 0.5s forwards;
}

.da-hero-subtitle {
    font-family: var(--da-font-body);
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.9;
    color: var(--da-ivory);
    max-width: 600px;
    margin: 0 auto 3rem;
    opacity: 0;
    animation: da-fade-in-up 1s ease-out 0.7s forwards;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: 1px solid var(--da-sand);
    color: var(--da-ivory);
    padding: 16px 40px;
    font-family: var(--da-font-accent);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 2px;
    transition: all var(--da-transition-fast);
    opacity: 0;
    animation: da-fade-in-up 1s ease-out 0.9s forwards;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-hero-cta:hover {
    background: var(--da-amber);
    border-color: var(--da-amber);
    color: var(--da-obsidian);
    text-decoration: none;
}

.da-hero-scroll {
    position: absolute;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--da-bone);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0;
    animation: da-fade-in 1s ease-out 1.2s forwards;
}

.da-hero-scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--da-sand), transparent);
    animation: da-scroll-hint 2s ease-in-out infinite;
}

@keyframes da-scroll-hint {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* ========================================
   Content Sections
   ======================================== */
.da-section-divider {
    width: 60px;
    height: 1px;
    background: var(--da-copper);
    margin: 0 auto 3rem;
}

.da-prose {
    text-align: center;
}

.da-prose p {
    margin: 0 0 1.75rem;
    color: var(--da-ivory);
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
}

.da-prose p:last-child {
    margin-bottom: 0;
}

/* What Is Deep Ancestry Section */
.da-definition {
    background: var(--da-slate);
    border-top: 1px solid rgba(168, 159, 145, 0.1);
    border-bottom: 1px solid rgba(168, 159, 145, 0.1);
}

.da-definition .da-heading-2 {
    margin-bottom: 2.5rem;
}

/* Different Way Section */
.da-perspective {
    background: var(--da-obsidian);
}

.da-perspective-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .da-perspective-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.da-perspective-item {
    text-align: left;
    padding: 2rem;
    border-left: 2px solid var(--da-copper);
    background: rgba(42, 45, 49, 0.3);
}

.da-perspective-item h3 {
    font-family: var(--da-font-display);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--da-ivory);
    margin: 0 0 1rem;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-perspective-item p {
    color: var(--da-ivory);
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Revelations Section */
.da-revelations {
    background: linear-gradient(180deg, var(--da-obsidian), var(--da-slate));
}

.da-revelation-list {
    list-style: none;
    padding: 0;
    margin: 3rem 0;
    text-align: left;
}

.da-revelation-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(168, 159, 145, 0.1);
}

.da-revelation-item:last-child {
    border-bottom: none;
}

.da-revelation-marker {
    width: 8px;
    height: 8px;
    background: var(--da-amber);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.5rem;
}

.da-revelation-text {
    color: var(--da-ivory);
    font-size: 1.0625rem;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-quote-block {
    background: var(--da-stone);
    border-left: 3px solid var(--da-amber);
    padding: 2rem 2.5rem;
    margin: 3rem 0;
    text-align: left;
}

.da-quote-text {
    font-family: var(--da-font-display);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--da-ivory);
    line-height: 1.5;
    margin: 0;
}

/* Reports Overview Section */
.da-reports {
    background: var(--da-slate);
}

.da-timeline-visual {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 3rem 0;
    position: relative;
}

@media (min-width: 768px) {
    .da-timeline-visual {
        flex-direction: row;
    }
}

.da-timeline-era {
    flex: 1;
    padding: 2rem;
    background: var(--da-stone);
    position: relative;
    text-align: center;
    border: 1px solid rgba(168, 159, 145, 0.1);
}

@media (min-width: 768px) {
    .da-timeline-era:not(:last-child)::after {
        content: '';
        position: absolute;
        right: -1px;
        top: 50%;
        transform: translateY(-50%);
        width: 2px;
        height: 40%;
        background: var(--da-amber);
    }
}

.da-timeline-era-label {
    font-family: var(--da-font-accent);
    font-size: 0.6875rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--da-amber);
    margin-bottom: 0.75rem;
}

.da-timeline-era-title {
    font-family: var(--da-font-display);
    font-size: 1.25rem;
    color: var(--da-ivory);
    margin-bottom: 0.5rem;
}

.da-timeline-era-date {
    font-size: 0.875rem;
    color: var(--da-ivory);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Guidance Section */
.da-guidance {
    background: var(--da-obsidian);
}

.da-guidance-list {
    list-style: none;
    padding: 0;
    margin: 2.5rem 0 0;
    text-align: left;
}

.da-guidance-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.25rem 0;
}

.da-guidance-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--da-copper);
    flex-shrink: 0;
    margin-top: 2px;
}

.da-guidance-text {
    color: var(--da-ivory);
    font-size: 0.9375rem;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Science Section */
.da-science {
    background: var(--da-slate);
    border-top: 1px solid rgba(168, 159, 145, 0.1);
}

.da-science-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
    text-align: left;
}

@media (min-width: 768px) {
    .da-science-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.da-science-item {
    padding: 1.5rem;
    background: rgba(13, 13, 15, 0.4);
    border-radius: 4px;
}

.da-science-item h4 {
    font-family: var(--da-font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--da-ivory);
    margin: 0 0 0.75rem;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-science-item p {
    color: var(--da-ivory);
    font-size: 0.875rem;
    margin: 0;
    line-height: 1.7;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   CHROMOSOMAL SEGMENT ANALYSIS PIPELINE
   ======================================== */
.da-pipeline {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    margin-top: 3rem;
    padding: 0 1rem;
}

.da-pipeline-step {
    flex: 1;
    max-width: 240px;
    text-align: center;
    padding: 28px 18px 24px;
    background: rgba(13, 13, 15, 0.5);
    border: 1px solid rgba(196, 149, 106, 0.15);
    border-radius: 12px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.da-pipeline-step:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    border-color: rgba(196, 149, 106, 0.4);
}

.da-pipeline-number {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--da-amber);
    color: var(--da-obsidian);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--da-font-body);
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(196, 149, 106, 0.4);
}

.da-pipeline-icon {
    width: 48px;
    height: 48px;
    margin: 8px auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(196, 149, 106, 0.1);
    border-radius: 50%;
    color: var(--da-amber);
}

.da-pipeline-icon .dna-icon {
    width: 22px;
    height: 22px;
}

.da-pipeline-step h4 {
    font-family: var(--da-font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--da-ivory);
    margin: 0 0 8px;
}

.da-pipeline-step p {
    font-size: 0.8125rem;
    color: var(--da-bone);
    line-height: 1.65;
    margin: 0;
}

/* Pipeline Connectors */
.da-pipeline-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    flex-shrink: 0;
    padding-top: 48px;
}

.da-connector-line {
    display: block;
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, rgba(196, 149, 106, 0.2), rgba(196, 149, 106, 0.6));
}

.da-connector-arrow {
    display: block;
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 6px solid var(--da-amber);
    opacity: 0.6;
    margin-left: -2px;
}

/* Chromosome Phasing Diagram */
.da-chromosome-diagram {
    margin-top: 3.5rem;
    padding: 32px;
    background: rgba(13, 13, 15, 0.5);
    border: 1px solid rgba(196, 149, 106, 0.15);
    border-radius: 12px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.da-diagram-label {
    font-family: var(--da-font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--da-sand);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-align: center;
    margin-bottom: 24px;
}

.da-diagram-stages {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
}

.da-diagram-stage {
    width: 100%;
    max-width: 480px;
}

.da-stage-label {
    display: block;
    font-family: var(--da-font-body);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--da-sand);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
}

.da-stage-label-second {
    margin-top: 10px;
}

.da-stage-bar {
    width: 100%;
    height: 20px;
    background: rgba(42, 45, 49, 0.6);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(168, 159, 145, 0.1);
}

.da-bar-fill {
    display: block;
    height: 100%;
    border-radius: 10px;
}

.da-fill-mixed {
    background: linear-gradient(90deg,
        rgba(168, 159, 145, 0.4) 0%,
        rgba(168, 159, 145, 0.6) 50%,
        rgba(168, 159, 145, 0.4) 100%);
}

.da-fill-maternal {
    background: linear-gradient(90deg,
        rgba(196, 149, 106, 0.5) 0%,
        rgba(196, 149, 106, 0.7) 100%);
}

.da-fill-paternal {
    background: linear-gradient(90deg,
        rgba(139, 109, 79, 0.5) 0%,
        rgba(139, 109, 79, 0.7) 100%);
}

.da-bar-assigned {
    display: flex;
    background: transparent;
    border: none;
    gap: 2px;
}

.da-bar-segment {
    height: 100%;
    border-radius: 10px;
    transition: opacity 0.3s ease;
}

.da-bar-segment:first-child {
    border-radius: 10px 0 0 10px;
}

.da-bar-segment:last-child {
    border-radius: 0 10px 10px 0;
}

.da-seg-whg { background: #7c3aed; }
.da-seg-ehg { background: #4f46e5; }
.da-seg-farmer { background: #2563eb; }
.da-seg-steppe { background: #d97706; }
.da-seg-other { background: #6b7280; }

.da-diagram-arrow {
    text-align: center;
    color: var(--da-amber);
    opacity: 0.5;
    padding: 4px 0;
}

.da-diagram-arrow .dna-icon {
    width: 16px;
    height: 16px;
}

.da-diagram-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
}

.da-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--da-sand);
}

.da-legend-swatch {
    width: 14px;
    height: 8px;
    border-radius: 4px;
}

.da-swatch-whg { background: #7c3aed; }
.da-swatch-ehg { background: #4f46e5; }
.da-swatch-farmer { background: #2563eb; }
.da-swatch-steppe { background: #d97706; }
.da-swatch-other { background: #6b7280; }

/* Metric Callouts */
.da-metric-callouts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.da-metric-card {
    text-align: center;
    padding: 24px 16px;
    background: rgba(13, 13, 15, 0.5);
    border: 1px solid rgba(196, 149, 106, 0.15);
    border-radius: 12px;
    transition: border-color 0.3s ease;
}

.da-metric-card:hover {
    border-color: rgba(196, 149, 106, 0.4);
}

.da-metric-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin: 0 auto 12px;
    background: rgba(196, 149, 106, 0.1);
    border-radius: 50%;
    color: var(--da-amber);
}

.da-metric-icon .dna-icon {
    width: 18px;
    height: 18px;
}

.da-metric-value {
    display: block;
    font-family: var(--da-font-body);
    font-size: 1rem;
    font-weight: 700;
    color: var(--da-ivory);
    line-height: 1.2;
    margin-bottom: 4px;
}

.da-metric-label {
    display: block;
    font-family: var(--da-font-body);
    font-size: 0.75rem;
    color: var(--da-sand);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Deep Dive Accordion */
.da-deep-dive {
    margin-top: 3rem;
    background: rgba(13, 13, 15, 0.5);
    border: 1px solid rgba(196, 149, 106, 0.15);
    border-radius: 12px;
    overflow: hidden;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.da-deep-dive-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--da-font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--da-ivory);
    text-align: left;
    transition: background 0.3s ease;
}

.da-deep-dive-trigger:hover {
    background: rgba(196, 149, 106, 0.05);
}

.da-deep-dive-trigger > span {
    display: flex;
    align-items: center;
}

.da-deep-dive-trigger > span .dna-icon {
    color: var(--da-amber);
}

.da-deep-dive-icon {
    transition: transform 0.3s ease;
    color: var(--da-sand);
}

.da-deep-dive-trigger[aria-expanded="true"] .da-deep-dive-icon {
    transform: rotate(180deg);
}

.da-deep-dive-content {
    padding: 0 24px 24px;
}

.da-deep-dive-content p {
    font-size: 0.9375rem;
    color: var(--da-ivory);
    line-height: 1.7;
    margin-bottom: 16px;
}

.da-deep-dive-content p:last-child {
    margin-bottom: 0;
}

/* Pipeline Responsive */
@media (max-width: 991px) {
    .da-pipeline {
        flex-direction: column;
        align-items: center;
        gap: 0;
    }

    .da-pipeline-step {
        max-width: 400px;
        width: 100%;
    }

    .da-pipeline-connector {
        width: auto;
        height: 28px;
        padding-top: 0;
        transform: rotate(90deg);
    }

    .da-metric-callouts {
        grid-template-columns: 1fr;
        max-width: 320px;
    }
}

@media (max-width: 575px) {
    .da-chromosome-diagram {
        padding: 20px 16px;
    }

    .da-diagram-legend {
        gap: 10px;
    }
}

/* Perspectives Section (Reimagined Testimonials) */
.da-perspectives {
    background: var(--da-obsidian);
}

.da-perspectives-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .da-perspectives-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.da-perspective-quote {
    padding: 2rem;
    background: var(--da-stone);
    border-radius: 4px;
    position: relative;
}

.da-perspective-quote::before {
    content: '"';
    font-family: var(--da-font-display);
    font-size: 4rem;
    color: var(--da-copper);
    opacity: 0.3;
    position: absolute;
    top: 0.5rem;
    left: 1rem;
    line-height: 1;
}

.da-perspective-quote p {
    font-family: var(--da-font-display);
    font-size: 1.125rem;
    font-style: italic;
    color: var(--da-ivory);
    line-height: 1.7;
    margin: 0;
    padding-left: 1rem;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-perspective-source {
    font-family: var(--da-font-body);
    font-size: 0.8125rem;
    font-style: normal;
    color: var(--da-ivory);
    margin-top: 1rem;
    padding-left: 1rem;
    display: block;
    opacity: 0.9;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Why It Matters Section */
.da-meaning {
    background: linear-gradient(180deg, var(--da-slate), var(--da-obsidian));
}

/* ========================================
   PRICING SECTION - Cinematic Partial Overrides
   ======================================== */
.da-pricing-section {
    --rpc-bg: var(--da-obsidian);
    --rpc-overlay: rgba(13, 13, 15, 0.75);
    --rpc-text-primary: var(--da-ivory);
    --rpc-text-secondary: rgba(245, 243, 239, 0.9);
    --rpc-text-muted: rgba(245, 243, 239, 0.6);
    --rpc-accent: var(--da-amber);
    --rpc-accent-dim: var(--da-copper);
    --rpc-cta-bg: var(--da-amber);
    --rpc-cta-text: var(--da-obsidian);
    --rpc-cta-hover: var(--da-copper);
    --rpc-border: rgba(245, 243, 239, 0.12);
    --rpc-font-display: var(--da-font-display);
    --rpc-font-body: var(--da-font-body);

    /* Full viewport width breakout for cinematic edge-to-edge dark block */
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

/* Ensure background image and overlay render with deep ancestry theme */
.da-pricing-section .rpc-pricing-bg img {
    opacity: 0.25;
    filter: grayscale(30%) sepia(10%) brightness(0.7);
}

.da-pricing-section .rpc-pricing-overlay {
    background:
        radial-gradient(ellipse at center, transparent 0%, var(--rpc-bg) 70%),
        linear-gradient(0deg, var(--rpc-bg) 0%, transparent 40%);
}

/* ========================================
   FAQ Section
   ======================================== */
.da-faq {
    background: var(--da-slate);
    border-top: 1px solid rgba(168, 159, 145, 0.1);
}

.da-faq-container {
    max-width: 800px;
    margin: 3rem auto 0;
}

.da-faq-item {
    border-bottom: 1px solid rgba(168, 159, 145, 0.1);
}

.da-faq-item:last-child {
    border-bottom: none;
}

.da-faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}

.da-faq-question h3 {
    font-family: var(--da-font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--da-ivory);
    margin: 0;
    transition: color var(--da-transition-fast);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-faq-question:hover h3 {
    color: var(--da-amber);
}

.da-faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--da-sand);
    flex-shrink: 0;
    transition: transform var(--da-transition-fast);
}

.da-faq-item.active .da-faq-icon {
    transform: rotate(45deg);
}

.da-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--da-transition-medium);
}

.da-faq-answer-content {
    padding: 0 0 1.5rem;
    color: var(--da-ivory);
    font-size: 0.9375rem;
    line-height: 1.8;
    font-weight: 400;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.da-faq-item.active .da-faq-answer {
    max-height: 500px;
}

/* ========================================
   Animations
   ======================================== */
@keyframes da-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes da-fade-in-up {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll-triggered animations */
.da-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--da-transition-slow), transform var(--da-transition-slow);
}

.da-animate.da-visible {
    opacity: 1;
    transform: translateY(0);
}

.da-animate-delay-1 { transition-delay: 0.1s; }
.da-animate-delay-2 { transition-delay: 0.2s; }
.da-animate-delay-3 { transition-delay: 0.3s; }

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 767px) {
    .da-section {
        padding: 60px 20px;
    }
    
    .da-hero {
        padding: 100px 20px 60px;
        min-height: calc(100vh - 60px);
    }
    
    .da-hero-scroll {
        bottom: 24px;
    }
    
    .da-quote-block {
        padding: 1.5rem;
    }
    
    .da-quote-text {
        font-size: 1.25rem;
    }
    
    .da-perspective-item {
        padding: 1.5rem;
    }
    
    .da-timeline-era {
        padding: 1.5rem;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .da-page-nav,
    .da-scroll-progress,
    .da-hero-scroll,
    .da-skip-link {
        display: none !important;
    }
    
    .da-page {
        background: white;
        color: black;
    }
    
    .da-hero {
        min-height: auto;
        padding: 40px 20px;
    }
    
    .da-hero-bg {
        display: none;
    }
}

/* ========================================
   RELATED PRODUCTS
   ======================================== */
.deep-related-products {
    padding: 60px 0;
    background: var(--da-obsidian);
}

.deep-related-title {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    color: var(--da-bone);
    margin-bottom: 40px;
    font-family: var(--da-font-display);
    font-weight: 700;
}

.deep-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 991px) {
    .deep-related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .deep-related-grid {
        grid-template-columns: 1fr;
    }
}

.deep-related-card {
    background: var(--da-slate);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid rgba(168, 159, 145, 0.1);
}

.deep-related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    border-color: var(--da-amber);
}

.deep-related-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid rgba(168, 159, 145, 0.1);
}

.deep-related-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.deep-related-content h4 {
    font-size: 1.2rem;
    color: var(--da-bone);
    margin-bottom: 8px;
    font-family: var(--da-font-body);
    font-weight: 600;
}

.deep-related-content p {
    font-size: 0.95rem;
    color: var(--da-sand);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.deep-related-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--da-amber);
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s ease;
    margin-top: auto;
}

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

.deep-related-link i {
    transition: transform 0.2s ease;
}

.deep-related-link:hover i {
    transform: translateX(4px);
}