/** * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 * 
 * DNA Kit Studio - Cinematic Product Page Styles
 * Solid backgrounds (no gradients) with scroll-chapter navigation and subtle motion.
 */

:root {
    --dks-dark: #0F172A;
    --dks-dark-2: #111C33;
    --dks-white: #ffffff;

    --dks-teal: #2DD4BF;
    --dks-teal-2: #14B8A6;
    --dks-green: #22C55E;
    --dks-amber: #F59E0B;

    --dks-gray-50: #FAFBFC;
    --dks-gray-100: #F3F4F6;
    --dks-gray-200: #E5E7EB;
    --dks-gray-300: #D1D5DB;
    --dks-gray-400: #9CA3AF;
    --dks-gray-500: #6B7280;
    --dks-gray-600: #4B5563;
    --dks-gray-700: #374151;
    --dks-gray-800: #1F2937;
    --dks-gray-900: #111827;

    --dks-font-display: 'Cormorant Garamond', Georgia, serif;
    --dks-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --dks-section-padding: 6rem;
    --dks-section-padding-mobile: 4rem;

    --dks-transition-fast: 0.15s ease;
    --dks-transition-normal: 0.3s ease;
    --dks-transition-slow: 0.6s ease;

    --dks-z-nav: 100;
    --dks-z-sticky: 200;
}

/* ========================================
   BASE
   ======================================== */
.dks-main {
    font-family: var(--dks-font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.dks-skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dks-dark);
    color: var(--dks-white);
    padding: 1rem 2rem;
    border-radius: 0 0 10px 10px;
    z-index: 999;
    transition: top var(--dks-transition-fast);
}

.dks-skip-link:focus {
    top: 0;
    color: var(--dks-white);
    text-decoration: none;
}

/* ========================================
   SCROLL PROGRESS
   ======================================== */
.dks-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--dks-teal);
    z-index: var(--dks-z-sticky);
    transition: width 0.1s linear;
}

/* ========================================
   CHAPTER NAV (Desktop)
   ======================================== */
.dks-chapter-nav {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: var(--dks-z-nav);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dks-chapter-dot {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.dks-chapter-dot .dks-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(45, 212, 191, 0.25);
    border: 2px solid rgba(45, 212, 191, 0.75);
    transition: all var(--dks-transition-normal);
}

.dks-chapter-dot:hover .dks-dot,
.dks-chapter-dot.active .dks-dot {
    background: var(--dks-teal);
    transform: scale(1.3);
}

.dks-chapter-dot::before {
    content: attr(data-tooltip);
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.5rem 0.9rem;
    background: var(--dks-dark);
    color: var(--dks-white);
    border-radius: 6px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dks-transition-fast), visibility var(--dks-transition-fast);
    margin-right: 0.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.dks-chapter-dot:hover::before {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   BACK TO TOP
   ======================================== */
.dks-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: var(--dks-dark);
    color: var(--dks-white);
    cursor: pointer;
    z-index: var(--dks-z-nav);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--dks-transition-normal);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}

.dks-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dks-back-to-top:hover {
    background: var(--dks-teal-2);
    transform: translateY(-3px);
}

/* ========================================
   HERO
   ======================================== */
.dks-hero {
    position: relative;
    min-height: 100vh;
    color: var(--dks-white);
    background-color: var(--dks-dark);
    background-image: url('/img/features/dna-kit/dna-kit-studio-header-thumb.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
    padding-top: var(--content-offset, 80px);
}

.dks-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.dks-hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.82);
}

.dks-hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.35;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='84' height='84' viewBox='0 0 84 84'%3E%3Cg fill='none' stroke='%23FFFFFF' stroke-opacity='0.12' stroke-width='1'%3E%3Cpath d='M0 42H84'/%3E%3Cpath d='M42 0V84'/%3E%3Cpath d='M0 0L84 84'/%3E%3Cpath d='M84 0L0 84'/%3E%3C/g%3E%3C/svg%3E");
    background-size: 84px 84px;
}

.dks-hero-signal {
    position: absolute;
    left: 50%;
    top: 55%;
    transform: translate(-50%, -50%);
    width: min(720px, 92vw);
    opacity: 0.9;
    filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.35));
}

.dks-signal-dot {
    animation: dksSignalPulse 2.4s ease-in-out infinite;
}

circle.dks-signal-dot:nth-of-type(1) { animation-delay: 0s; }
circle.dks-signal-dot:nth-of-type(2) { animation-delay: 0.2s; }
circle.dks-signal-dot:nth-of-type(3) { animation-delay: 0.4s; }

@keyframes dksSignalPulse {
    0%, 100% { opacity: 0.25; transform: translateX(0); }
    50% { opacity: 1; transform: translateX(6px); }
}

.dks-hero-content {
    position: relative;
    z-index: 5;
}

.dks-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.4rem;
    backdrop-filter: blur(10px);
}

.dks-hero-title {
    font-family: var(--dks-font-display);
    font-size: clamp(2.8rem, 6.5vw, 4.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin: 0 0 0.9rem;
}

.dks-hero-tagline {
    font-family: var(--dks-font-display);
    font-size: clamp(1.25rem, 2.6vw, 1.75rem);
    font-style: italic;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 1.25rem;
}

.dks-hero-lead {
    font-size: 1.08rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.82);
    max-width: 560px;
    margin: 0 0 2rem;
}

.dks-hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.dks-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--dks-teal);
    color: var(--dks-dark);
    font-weight: 700;
    text-decoration: none;
    border-radius: 10px;
    transition: transform var(--dks-transition-normal), box-shadow var(--dks-transition-normal), background var(--dks-transition-normal);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}

.dks-btn-primary:hover {
    background: var(--dks-teal-2);
    transform: translateY(-2px);
    color: var(--dks-dark);
    text-decoration: none;
}

.dks-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    color: var(--dks-white);
    font-weight: 700;
    text-decoration: none;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all var(--dks-transition-normal);
}

.dks-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.35);
    color: var(--dks-white);
    text-decoration: none;
}

.dks-btn-lg {
    padding: 1.2rem 2rem;
    font-size: 1.1rem;
}

.dks-trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
}

.dks-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.78);
}

.dks-trust-item i {
    color: var(--dks-green);
}

/* Quickstart Card */
.dks-quickstart-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 18px;
    padding: 2rem;
    backdrop-filter: blur(14px);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
    position: relative;
    z-index: 6;
}

.dks-card-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(45, 212, 191, 0.95);
    margin-bottom: 0.3rem;
}

.dks-card-sublabel {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dks-white);
}

.dks-steps-mini {
    margin: 1.25rem 0 1.5rem;
}

.dks-step-mini {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.dks-step-mini:last-child {
    border-bottom: none;
}

.dks-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(45, 212, 191, 0.92);
    color: var(--dks-dark);
    font-size: 0.85rem;
    font-weight: 800;
}

.dks-step-text {
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.95rem;
}

.dks-release {
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 1rem;
    margin-bottom: 1.25rem;
}

.dks-release-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.35rem 0;
    font-size: 0.9rem;
}

.dks-release-key {
    color: rgba(255, 255, 255, 0.65);
}

.dks-release-value {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
}

.dks-btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 1rem;
    background: var(--dks-white);
    color: var(--dks-dark);
    border-radius: 10px;
    font-weight: 800;
    text-decoration: none;
    transition: transform var(--dks-transition-normal), box-shadow var(--dks-transition-normal);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
}

.dks-btn-download:hover {
    transform: translateY(-2px);
    color: var(--dks-dark);
    text-decoration: none;
}

.dks-card-footnote {
    margin: 0.9rem 0 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
}

/* Scroll indicator */
.dks-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 0.85rem;
    animation: dksBounce 2s infinite;
    z-index: 6;
}

.dks-scroll-indicator:hover {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

@keyframes dksBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ========================================
   SECTIONS
   ======================================== */
.dks-section {
    padding: var(--dks-section-padding) 0;
    position: relative;
}

.dks-chapter-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.dks-chapter-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--dks-teal-2);
    padding: 0.45rem 1rem;
    border-radius: 999px;
    background: rgba(20, 184, 166, 0.12);
    margin-bottom: 1rem;
}

.dks-section-title {
    font-family: var(--dks-font-display);
    font-size: clamp(2rem, 4.6vw, 3rem);
    font-weight: 700;
    color: var(--dks-gray-900);
    line-height: 1.15;
    margin-bottom: 1rem;
}

.dks-section-subtitle {
    font-size: 1.1rem;
    color: var(--dks-gray-500);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.65;
}

/* Companies */
.dks-companies {
    background: var(--dks-gray-50);
}

.dks-companies::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.25;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Ccircle cx='2' cy='2' r='1.6' fill='%239CA3AF'/%3E%3C/svg%3E");
    background-size: 40px 40px;
    pointer-events: none;
}

.dks-companies .container {
    position: relative;
    z-index: 1;
}

.dks-company-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 auto;
    max-width: 920px;
}

.dks-company-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.1rem;
    background: var(--dks-white);
    border: 1px solid var(--dks-gray-200);
    border-radius: 999px;
    font-weight: 700;
    color: var(--dks-gray-800);
    box-shadow: 0 10px 22px rgba(0, 0, 0, 0.05);
    transition: transform var(--dks-transition-normal), box-shadow var(--dks-transition-normal);
}

.dks-company-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.08);
}

.dks-company-badge-muted {
    color: var(--dks-gray-500);
}

.dks-compat-note {
    margin-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    color: var(--dks-gray-500);
    font-size: 0.95rem;
}

.dks-compat-note i {
    color: var(--dks-amber);
}

/* Toolkit */
.dks-toolkit {
    background: var(--dks-white);
}

.dks-feature-card {
    height: 100%;
    padding: 2rem;
    border-radius: 18px;
    background: var(--dks-gray-50);
    border: 1px solid var(--dks-gray-200);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
    transition: transform var(--dks-transition-normal), box-shadow var(--dks-transition-normal), border-color var(--dks-transition-normal);
}

.dks-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 42px rgba(0, 0, 0, 0.09);
    border-color: rgba(20, 184, 166, 0.45);
}

.dks-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(45, 212, 191, 0.18);
    color: var(--dks-teal-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.dks-feature-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--dks-gray-900);
    margin-bottom: 0.5rem;
}

.dks-feature-desc {
    color: var(--dks-gray-600);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.dks-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--dks-gray-600);
}

.dks-feature-list li {
    padding: 0.4rem 0;
    position: relative;
    padding-left: 1.25rem;
}

.dks-feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0.35rem;
    color: var(--dks-green);
    font-weight: 900;
}

/* Expandable */
.dks-expandables {
    max-width: 980px;
    margin: 2.5rem auto 0;
}

.dks-expandable {
    background: var(--dks-white);
    border: 1px solid var(--dks-gray-200);
    border-radius: 16px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.dks-expandable-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.25rem;
    background: var(--dks-gray-50);
    border: none;
    cursor: pointer;
    font-weight: 800;
    color: var(--dks-gray-800);
}

.dks-expandable-header i:last-child {
    transition: transform var(--dks-transition-normal);
}

.dks-expandable.active .dks-expandable-header i:last-child {
    transform: rotate(180deg);
}

.dks-expandable-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--dks-transition-slow);
    background: var(--dks-white);
}

.dks-expandable.active .dks-expandable-body {
    max-height: 1000px;
}

.dks-expandable-body .row {
    padding: 1.25rem 1.25rem 0;
}

.dks-bullets {
    list-style: none;
    padding-left: 0;
    margin: 0 0 1rem;
    color: var(--dks-gray-700);
}

.dks-bullets li {
    padding: 0.45rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.dks-bullets li::before {
    content: '•';
    position: absolute;
    left: 0.25rem;
    color: var(--dks-teal-2);
    font-weight: 900;
}

.dks-expandable-note {
    margin: 0;
    padding: 1rem 1.25rem 1.25rem;
    color: var(--dks-gray-500);
    font-size: 0.95rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.dks-expandable-note i {
    color: var(--dks-amber);
    margin-top: 0.15rem;
}

/* Workflow */
.dks-workflow {
    background: var(--dks-gray-50);
}

.dks-steps {
    max-width: 860px;
    margin: 0 auto 2.5rem;
    display: grid;
    gap: 1rem;
}

.dks-step {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
    background: var(--dks-white);
    border: 1px solid var(--dks-gray-200);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.05);
}

.dks-step-number {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(45, 212, 191, 0.18);
    color: var(--dks-teal-2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    flex-shrink: 0;
}

.dks-step-content h3 {
    margin: 0 0 0.35rem;
    font-weight: 800;
    color: var(--dks-gray-900);
    font-size: 1.1rem;
}

.dks-step-content p {
    margin: 0;
    color: var(--dks-gray-600);
    line-height: 1.6;
}

.dks-interface {
    max-width: 980px;
    margin: 0 auto;
}

.dks-interface-card {
    background: var(--dks-white);
    border: 1px solid var(--dks-gray-200);
    border-radius: 18px;
    padding: 2rem;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.dks-interface-title {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--dks-gray-900);
    margin: 0 0 0.4rem;
}

.dks-interface-subtitle {
    color: var(--dks-gray-600);
    margin: 0 0 1.25rem;
}

.dks-interface-media img {
    width: 100%;
    border-radius: 14px;
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.14);
}

.dks-interface-caption {
    margin: 1rem 0 0;
    color: var(--dks-gray-500);
    font-size: 0.9rem;
}

/* Privacy */
.dks-privacy {
    background: var(--dks-white);
}

.dks-trust-card {
    height: 100%;
    background: var(--dks-gray-50);
    border: 1px solid var(--dks-gray-200);
    border-radius: 18px;
    padding: 2rem;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
}

.dks-trust-icon {
    width: 54px;
    height: 54px;
    border-radius: 14px;
    background: rgba(34, 197, 94, 0.14);
    color: var(--dks-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.dks-trust-icon-warn {
    background: rgba(245, 158, 11, 0.16);
    color: var(--dks-amber);
}

.dks-trust-card h3 {
    font-weight: 900;
    color: var(--dks-gray-900);
    margin-bottom: 0.6rem;
}

.dks-trust-card p {
    color: var(--dks-gray-600);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.dks-trust-list {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--dks-gray-700);
}

.dks-trust-list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.35rem 0;
}

.dks-trust-list li i {
    color: var(--dks-green);
    font-size: 0.8rem;
}

/* Finale */
.dks-finale {
    background: var(--dks-gray-50);
}

.dks-finale-card {
    background: var(--dks-dark);
    color: var(--dks-white);
    border-radius: 22px;
    padding: 3rem 2.5rem;
    box-shadow: 0 18px 52px rgba(0, 0, 0, 0.25);
    text-align: center;
    margin-bottom: 3rem;
}

.dks-finale-title {
    font-family: var(--dks-font-display);
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0 0 0.75rem;
}

.dks-finale-subtitle {
    color: rgba(255, 255, 255, 0.82);
    margin: 0 auto 1.75rem;
    max-width: 720px;
    line-height: 1.7;
    font-size: 1.05rem;
}

.dks-finale-buttons {
    display: flex;
    justify-content: center;
}

.dks-finale-footnote {
    margin: 1rem 0 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* FAQ */
.dks-faq {
    max-width: 900px;
    margin: 0 auto 2.5rem;
}

.dks-faq-title {
    text-align: center;
    font-weight: 900;
    color: var(--dks-gray-900);
    margin-bottom: 1.5rem;
}

.dks-faq-item {
    border-bottom: 1px solid var(--dks-gray-200);
}

.dks-faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
}

.dks-faq-question span {
    font-weight: 700;
    color: var(--dks-gray-800);
}

.dks-faq-question i {
    color: var(--dks-gray-400);
    transition: transform var(--dks-transition-normal);
}

.dks-faq-item.active .dks-faq-question i {
    transform: rotate(180deg);
}

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

.dks-faq-item.active .dks-faq-answer {
    max-height: 400px;
}

.dks-faq-answer p {
    margin: 0 0 1.1rem;
    color: var(--dks-gray-600);
    line-height: 1.7;
}

.dks-copyright {
    text-align: center;
    color: var(--dks-gray-500);
    font-size: 0.95rem;
}

/* ========================================
   STICKY CTA (Desktop)
   ======================================== */
.dks-sticky-cta {
    position: fixed;
    bottom: -120px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: var(--dks-z-sticky);
    transition: bottom var(--dks-transition-normal);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.25);
}

.dks-sticky-cta.visible {
    bottom: 0;
}

.dks-sticky-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.dks-sticky-title {
    display: block;
    color: var(--dks-white);
    font-weight: 900;
}

.dks-sticky-subtitle {
    display: block;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.9rem;
}

.dks-sticky-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.25rem;
    background: var(--dks-teal);
    color: var(--dks-dark);
    border-radius: 10px;
    font-weight: 900;
    text-decoration: none;
    transition: transform var(--dks-transition-normal), background var(--dks-transition-normal);
    white-space: nowrap;
}

.dks-sticky-btn:hover {
    background: var(--dks-teal-2);
    transform: translateY(-2px);
    color: var(--dks-dark);
    text-decoration: none;
}

/* ========================================
   MOBILE NAV
   ======================================== */
.dks-mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.94);
    border-top: 1px solid var(--dks-gray-200);
    backdrop-filter: blur(12px);
    z-index: var(--dks-z-sticky);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
}

.dks-mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.45rem 0.8rem;
    text-decoration: none;
    color: var(--dks-gray-500);
    font-size: 0.75rem;
    transition: color var(--dks-transition-fast);
}

.dks-mobile-nav-item i {
    font-size: 1.15rem;
}

.dks-mobile-nav-item.active,
.dks-mobile-nav-item:hover {
    color: var(--dks-teal-2);
    text-decoration: none;
}

/* ========================================
   ANIMATIONS
   ======================================== */
.dks-animate {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity var(--dks-transition-slow), transform var(--dks-transition-slow);
}

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

.dks-animate[data-animation="fade-in"] {
    transform: none;
}

.dks-animate[data-animation="fade-in-up"] {
    transform: translateY(26px);
}

.dks-animate[data-delay="100"] { transition-delay: 0.1s; }
.dks-animate[data-delay="150"] { transition-delay: 0.15s; }
.dks-animate[data-delay="200"] { transition-delay: 0.2s; }
.dks-animate[data-delay="300"] { transition-delay: 0.3s; }
.dks-animate[data-delay="400"] { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    .dks-animate {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .dks-scroll-indicator,
    .dks-signal-dot {
        animation: none;
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .dks-chapter-nav {
        display: none;
    }

    .dks-hero {
        padding-top: var(--content-offset-mobile, 72px);
    }

    .dks-quickstart-card {
        margin-top: 2.5rem;
    }

    .dks-sticky-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 767px) {
    :root {
        --dks-section-padding: var(--dks-section-padding-mobile);
    }

    .dks-hero-ctas {
        flex-direction: column;
    }

    .dks-btn-primary,
    .dks-btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .dks-trust-row {
        flex-direction: column;
        gap: 0.85rem;
    }

    .dks-scroll-indicator {
        bottom: 1.2rem;
    }

    .dks-finale-card {
        padding: 2.25rem 1.5rem;
        border-radius: 18px;
    }

    .dks-sticky-cta {
        display: none;
    }

    .dks-main {
        padding-bottom: 86px;
    }

    .dks-back-to-top {
        bottom: 96px;
        right: 1rem;
    }
}

@media print {
    .dks-chapter-nav,
    .dks-scroll-progress,
    .dks-back-to-top,
    .dks-sticky-cta,
    .dks-mobile-nav,
    .dks-scroll-indicator,
    .dks-hero-bg {
        display: none !important;
    }

    .dks-hero {
        min-height: auto;
        padding: 2rem 0;
    }

    .dks-animate {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ========================================
   RELATED PRODUCTS
   ======================================== */
.dnakit-related-products {
    padding: 60px 0;
    background: var(--dks-gray-50);
}

.dnakit-related-title {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    color: var(--dks-gray-900);
    margin-bottom: 40px;
    font-family: var(--dks-font-display);
    font-weight: 700;
}

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

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

.dnakit-related-card {
    background: var(--dks-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--dks-transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--dks-gray-200);
}

.dnakit-related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.dnakit-related-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--dks-gray-200);
}

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

.dnakit-related-content h4 {
    font-size: 1.2rem;
    color: var(--dks-gray-900);
    margin-bottom: 8px;
    font-family: var(--dks-font-body);
    font-weight: 600;
}

.dnakit-related-content p {
    font-size: 0.95rem;
    color: var(--dks-gray-600);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.dnakit-related-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--dks-teal);
    font-weight: 600;
    text-decoration: none;
    transition: var(--dks-transition-normal);
    margin-top: auto;
}

.dnakit-related-link:hover {
    color: var(--dks-teal-2);
    text-decoration: underline;
}

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

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