:root {
    --primary-color: #0072ff;
    --secondary-color: #00c6ff;
    --accent-gradient: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
    --bg-dark: #0a0a0a;
    --bg-card: #161616;
    --text-main: #ffffff;
    --text-muted: #a0a0a0;
    --border-color: #333333;
    --spacing-container: 1200px;
    --transition: all 0.3s ease;
    --amazon-orange: #ff9900;
    --choice-bg: #232f3e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 20px;
}

.section-padding {
    padding: 100px 0;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    border: none;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 114, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 114, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    margin-left: 10px;
}

.btn-secondary:hover {
    background: rgba(0, 114, 255, 0.1);
}

.gradient-text {
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.5px;
}

.highlight {
    color: var(--primary-color);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-list a,
.nav-list summary {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-list a:hover,
.nav-list summary:hover,
.nav-list a.active,
.nav-list summary.active {
    color: var(--text-main);
}

.btn-nav {
    background: var(--accent-gradient);
    padding: 10px 24px;
    border-radius: 20px;
    color: white !important;
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
}

/* Hero Section */
.hero {
    padding-top: 180px;
    padding-bottom: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 60% 50%, rgba(0, 114, 255, 0.08) 0%, rgba(10, 10, 10, 1) 70%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
}

.badges {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.badge {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-choice {
    background-color: var(--choice-bg);
    color: white;
    border: 1px solid #3a4b5f;
}

.badge-seller {
    background-color: var(--amazon-orange);
    color: #111;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 25px;
    letter-spacing: -1px;
    line-height: 1.1;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 550px;
}

.rating-summary {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 40px;
    font-size: 1rem;
    color: var(--text-main);
}

.stars {
    color: var(--amazon-orange);
    font-size: 1.2rem;
}

.hero-btns {
    display: flex;
    gap: 15px;
    margin-bottom: 50px;
}

.trust-indicators {
    display: flex;
    gap: 40px;
    color: var(--text-muted);
    font-size: 0.95rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.trust-item .icon {
    font-size: 1.2rem;
}

.image-wrapper {
    position: relative;
    z-index: 1;
}

.image-wrapper img {
    border-radius: 30px;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.6));
    animation: float 6s ease-in-out infinite;
    width: 100%;
    height: auto;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

.floating-card {
    position: absolute;
    background: rgba(22, 22, 22, 0.9);
    backdrop-filter: blur(15px);
    padding: 15px 25px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.card-1 {
    top: 15%;
    right: -30px;
}

.card-2 {
    bottom: 15%;
    left: -30px;
}

.card-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.card-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--secondary-color);
}

/* Features */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 80px;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--bg-card);
    padding: 50px 40px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 114, 255, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 25px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 1rem;
}

.feature-block {
    margin-bottom: 2.5rem;
}

.feature-block p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.product-review > p {
    margin-bottom: 2rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* Specs */
.bg-dark {
    background: #050505;
}

.specs-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 40px;
}

.specs-table th,
.specs-table td {
    padding: 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.specs-table th {
    color: var(--text-muted);
    font-weight: 500;
    width: 40%;
}

.specs-table td {
    font-weight: 600;
    color: var(--text-main);
}

.visual-placeholder {
    background: var(--bg-card);
    height: 500px;
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 1px dashed var(--border-color);
    position: relative;
}

.chair-outline {
    width: 200px;
    height: 300px;
    position: relative;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    opacity: 0.3;
}

.chair-back {
    width: 100%;
    height: 60%;
    border-bottom: 2px solid var(--text-muted);
}

.chair-seat {
    width: 100%;
    height: 10%;
    background: rgba(255, 255, 255, 0.1);
}

.chair-base {
    width: 2px;
    height: 30%;
    background: var(--text-muted);
    margin: 0 auto;
    position: relative;
}

.chair-base::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -50px;
    width: 100px;
    height: 2px;
    background: var(--text-muted);
}

.dimension-line {
    position: absolute;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
    border-radius: 4px;
}

.height-line {
    left: 20px;
    top: 20%;
    bottom: 20%;
    width: 2px;
}

.height-line span {
    position: absolute;
    left: 10px;
    white-space: nowrap;
    background: var(--bg-card);
    padding: 2px 5px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    color: var(--primary-color);
}

.width-line {
    bottom: 40px;
    left: 30%;
    right: 30%;
    height: 2px;
}

.width-line span {
    position: absolute;
    top: 10px;
    background: var(--bg-card);
    padding: 2px 5px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    color: var(--primary-color);
}

.visual-caption {
    margin-top: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.review-stars {
    color: var(--amazon-orange);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.review-card h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.review-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-style: italic;
    margin-bottom: 20px;
}

.reviewer {
    font-size: 0.85rem;
    color: var(--secondary-color);
    font-weight: 600;
}

/* CTA */
.cta-section {
    text-align: center;
}

.cta-box {
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    padding: 100px 40px;
    border-radius: 40px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(0, 114, 255, 0.2), transparent 70%);
}

.cta-box h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.cta-box p {
    color: var(--text-muted);
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
    font-size: 1.1rem;
}

.price-tag {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.currency {
    font-size: 1.5rem;
    vertical-align: top;
    margin-right: 5px;
    color: var(--secondary-color);
}

.btn-large {
    padding: 20px 50px;
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
}

.small-text {
    font-size: 0.9rem;
    margin-top: 20px;
    margin-bottom: 0;
    opacity: 0.7;
}

/* Related */
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.related-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid transparent;
    display: block;
}

.related-card:hover {
    border-color: var(--border-color);
    background: #202020;
    transform: translateY(-5px);
}

.related-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.related-card h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.related-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: #050505;
    padding: 100px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 80px;
    margin-bottom: 80px;
}

.footer-col h4 {
    margin-bottom: 30px;
    font-size: 1.2rem;
}

.footer-col ul li {
    margin-bottom: 15px;
}

.footer-col ul li a {
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 968px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 50px;
    }

    .hero-btns {
        justify-content: center;
    }

    .badges {
        justify-content: center;
    }

    .rating-summary {
        justify-content: center;
    }

    .trust-indicators {
        justify-content: center;
        flex-wrap: wrap;
    }

    .specs-wrapper {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-card);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .card-1,
    .card-2 {
        display: none;
    }
}

/* Animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
    will-change: opacity, transform;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
}

/* Ergonomic Guide Page Styles */
.page-title {
    text-align: center;
    font-size: 4rem;
    margin-bottom: 2rem;
    line-height: 1.1;
    background: var(--accent-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.ergonomic-guide {
    margin-top: 60px;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.breadcrumbs a {
    color: var(--text-muted);
}

.breadcrumbs a:hover {
    color: var(--primary-color);
}

.breadcrumbs span {
    color: var(--text-main);
}

/* Layout Grid */
.guide-layout-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 60px;
    position: relative;
    padding-bottom: 80px;
}

.guide-article {
    min-width: 0;
    /* Prevents overflow in grid */
}

/* Sidebar */
.guide-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.toc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
}

.toc-title {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.toc-list li {
    margin-bottom: 12px;
}

.toc-list a {
    color: var(--text-muted);
    font-size: 0.95rem;
    display: block;
    padding-left: 15px;
    border-left: 2px solid transparent;
    transition: var(--transition);
}

.toc-list a:hover,
.toc-list a.active {
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

/* Author Box */
.author-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.author-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--text-muted);
    /* Placeholder */
    object-fit: cover;
}

.author-info span {
    display: block;
}

.author-name {
    font-weight: 700;
    color: var(--text-main);
}

.post-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Drop Cap & Typography Enhancements */
.lead-paragraph::first-letter {
    float: left;
    font-size: 3.5rem;
    line-height: 0.8;
    font-weight: 700;
    margin-right: 12px;
    color: var(--primary-color);
}

.feature-grid-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

/* Responsive Guide */
@media (max-width: 1024px) {
    .guide-layout-grid {
        grid-template-columns: 1fr;
    }

    .guide-sidebar {
        display: none;
        /* Hide sidebar on mobile/tablet or move to bottom */
    }
}

.guide-intro {
    margin-bottom: 60px;
    text-align: center;
}

.guide-intro h2 {
    font-size: 2.5rem;
    color: var(--text-main);
}

.guide-intro p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto;
}

.guide-section {
    margin-bottom: 60px;
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.guide-section:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.guide-section h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.guide-title {
    color: var(--secondary-color);
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 30px;
}

.guide-section>p {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 30px;
}

.guide-subsection {
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 2px solid var(--border-color);
}

.guide-subsection:last-child {
    margin-bottom: 0;
}

.guide-subsection h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

.guide-subsection p {
    color: var(--text-muted);
    font-size: 1rem;
}

.guide-hero-img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
}

/* Sidebar Top Pick */
.top-pick-card {
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 25px;
    margin-top: 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.top-pick-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
}

.top-pick-label {
    display: inline-block;
    background: var(--amazon-orange);
    color: #000;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.top-pick-img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

.top-pick-title {
    font-size: 1.1rem;
    margin-bottom: 15px;
    line-height: 1.4;
}

.top-pick-btn {
    display: block;
    width: 100%;
    background: var(--text-main);
    color: var(--bg-dark);
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    margin-top: 15px;
}

.top-pick-btn:hover {
    background: var(--secondary-color);
    color: white;
}

/* Key Takeaways Box */
.takeaway-box {
    background: rgba(0, 114, 255, 0.05);
    border-left: 4px solid var(--primary-color);
    padding: 30px;
    border-radius: 4px 15px 15px 4px;
    margin-bottom: 50px;
}

.takeaway-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.takeaway-header h3 {
    margin: 0;
    font-size: 1.3rem;
    color: var(--primary-color);
}

.takeaway-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: var(--text-main);
}

.takeaway-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* Accordion FAQ */
.faq-details {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-details[open] {
    border-color: var(--primary-color);
}

.faq-summary {
    padding: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    /* Hide default triangle */
}

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

.faq-summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--secondary-color);
    transition: var(--transition);
}

.faq-details[open] .faq-summary::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 20px 20px;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
}

.subtitle {
    display: block;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 10px;
}

.feature-block,
.pain-point-block {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
    transition: var(--transition);
}

.feature-block:hover,
.pain-point-block:hover {
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.05);
}

.feature-block h3,
.pain-point-block h3 {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* Responsive adjustments for guide */
@media (max-width: 768px) {
    .page-title {
        font-size: 2.5rem;
    }

    .ergonomic-guide {
        margin-top: 40px;
    }

    .guide-section {
        padding: 25px;
    }

    .guide-section h2 {
        font-size: 1.6rem;
    }

    .guide-subsection {
        padding-left: 15px;
    }
}

/* Page Specific Overrides */
.ergonomic-page {
    background-color: black !important;
}

.ergonomic-page .section-padding {
    padding-top: 180px;
}

/* Article Typography & Spacing Enhancements */
.article-header h1 {
    margin-bottom: 3rem;
    /* Increased spacing after title */
}

.article-content p {
    margin-bottom: 2rem;
    line-height: 1.85;
    font-size: 1.15rem;
    color: #cccccc;
}

.article-content h2 {
    margin-top: 4rem !important;
    /* Force space before new sections */
    margin-bottom: 1.5rem;
}

.article-content h3 {
    margin-top: 2.5rem;
    margin-bottom: 1rem;
}

.article-content ul,
.article-content ol {
    margin-bottom: 2.5rem;
}

.article-content li {
    margin-bottom: 1rem;
    line-height: 1.7;
}

.article-content section {
    margin-bottom: 4rem;
}
/* Pros and Cons Styling */
.pros-cons-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.pros-box, .cons-box {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.pros-box h4, .cons-box h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pros-box h4 {
    color: #4cd964; /* Green */
}

.cons-box h4 {
    color: #ff3b30; /* Red */
}

.pro-list, .con-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pro-list li, .con-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.pro-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4cd964;
    font-weight: bold;
}

.con-list li::before {
    content: "✕";
    position: absolute;
    left: 0;
    color: #ff3b30;
    font-weight: bold;
}

/* Responsive Pros/Cons */
@media (max-width: 768px) {
    .pros-cons-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* FAQ Section Enhancements */
#faq {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

#faq h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.faq-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.faq-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-gradient);
    opacity: 0;
    transition: var(--transition);
}

.faq-item:hover::before {
    opacity: 1;
}

.faq-item h3 {
    color: var(--text-main);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-item h3::before {
    content: 'Q.';
    color: var(--secondary-color);
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    opacity: 0.5;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
    padding-left: 2rem;
}

@media (max-width: 768px) {
    .faq-item {
        padding: 1.5rem;
    }
    
    .faq-item p {
        padding-left: 0;
    }
}

/* Trust Box */
.trust-box {
    background: rgba(0, 114, 255, 0.1);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
}

.trust-box h3 {
    color: var(--secondary-color);
    margin-top: 0;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.trust-box p {
    margin-bottom: 0;
    color: var(--text-muted);
}

/* Table of Contents */
.toc {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.toc p {
    font-weight: 600;
    margin-bottom: 1rem;
    margin-top: 0;
    color: var(--text-main);
}

.toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.toc a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: var(--transition);
}

.toc a:hover {
    color: var(--primary-color);
}

/* Hero Pretitle */
.hero-pretitle {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
    display: inline-block;
}

/* Custom Category Grid & Cards */
.category-grid-custom {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.category-card-custom {
    background: var(--bg-card);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.4s ease, border-color 0.4s ease;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.category-card-custom:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 198, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 198, 255, 0.1);
}

.category-card-img-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
    background: #111;
}

.category-card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.category-card-custom:hover .category-card-img-wrapper img {
    transform: scale(1.08);
}

.category-card-body {
    padding: 35px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.category-badge {
    align-self: flex-start;
    padding: 6px 16px;
    background: rgba(0, 198, 255, 0.1);
    border: 1px solid rgba(0, 198, 255, 0.2);
    color: var(--secondary-color);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.category-card-body h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-main);
    transition: var(--transition);
}

.category-card-custom:hover .category-card-body h3 {
    color: var(--secondary-color);
}

.category-card-body p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 25px;
    flex-grow: 1;
}

.category-card-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--secondary-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    align-self: flex-start;
}

.category-card-link:hover {
    color: var(--primary-color);
    gap: 12px;
}

/* Navigation Dropdown Menu */
.nav-dropdown-wrapper {
    position: relative;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 15px 0;
    min-width: 220px;
    list-style: none;
    margin: 10px 0 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1001;
}

.nav-dropdown-wrapper.open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown li {
    padding: 0;
    margin: 0;
}

.nav-dropdown li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-muted) !important;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    font-weight: 500;
}

.nav-dropdown li a:hover {
    color: var(--text-main) !important;
    background: rgba(255, 255, 255, 0.03);
    padding-left: 24px;
}

.dropdown-category-title {
    padding: 8px 20px 4px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--secondary-color);
    font-weight: 700;
}

.dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin: 8px 0;
}

@media (max-width: 768px) {
    .nav-dropdown {
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
        padding: 5px 0 0 15px;
        opacity: 1;
        visibility: visible;
        display: none;
        transform: none;
    }
    
    .nav-dropdown-wrapper.open .nav-dropdown {
        display: block;
    }

    .nav-dropdown li a {
        padding: 8px 10px;
    }

    .nav-dropdown li a:hover {
        padding-left: 10px;
        background: transparent;
    }
}

/* Details / Summary Dropdown Support */
.nav-dropdown-details {
    position: relative;
}

.nav-dropdown-details summary {
    list-style: none;
    outline: none;
    user-select: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nav-dropdown-details summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown-details[open] .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    display: block;
}

.nav-dropdown-details summary .arrow {
    transition: transform 0.25s ease;
    display: inline-block;
}

.nav-dropdown-details[open] summary .arrow {
    transform: rotate(180deg);
}

@media (max-width: 768px) {
    .nav-dropdown-details[open] .nav-dropdown {
        display: block;
    }
}

/* Externalized Ergonomic Guide Component Styles */
.author-box {
    display: flex;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}
.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 1.2rem;
}
.author-info .author-name {
    margin: 0 0 4px 0;
    font-size: 1rem;
    color: var(--text-main);
}
.author-info p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.ai-overview-box {
    background: rgba(0, 198, 255, 0.08);
    border: 1px solid var(--secondary-color);
    padding: 20px;
    border-radius: 8px;
    margin: 25px 0;
}
.ai-overview-box strong {
    color: var(--secondary-color);
    font-size: 1.05rem;
    display: block;
    margin-bottom: 6px;
}
.tip-box {
    background: rgba(0, 198, 255, 0.05);
    border-left: 4px solid var(--secondary-color);
    padding: 24px;
    border-radius: 4px 16px 16px 4px;
    margin: 30px 0;
}
.tip-box strong {
    color: var(--secondary-color);
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.warning-box {
    background: rgba(255, 153, 0, 0.05);
    border-left: 4px solid var(--amazon-orange);
    padding: 24px;
    border-radius: 4px 16px 16px 4px;
    margin: 30px 0;
}
.warning-box strong {
    color: var(--amazon-orange);
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.image-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: -20px;
    margin-bottom: 30px;
    font-style: italic;
}
.comparison-table-wrapper {
    overflow-x: auto;
    margin: 30px 0;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}
table.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
    background: var(--bg-card);
}
table.comparison-table th, table.comparison-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}
table.comparison-table th {
    background: rgba(255, 255, 255, 0.03);
    font-family: 'Outfit', sans-serif;
    color: var(--text-main);
    font-weight: 600;
}
table.comparison-table td {
    color: var(--text-muted);
}
.step-list {
    list-style: none;
    padding: 0;
    margin: 25px 0;
}
.step-item {
    display: flex;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 16px;
}
.step-number {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #fff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}
.step-content .step-title {
    display: block;
    margin: 0 0 6px 0;
    color: var(--text-main);
    font-size: 1.1rem;
    font-weight: 700;
}
.step-content p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.budget-tier-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin: 20px 0;
}
.budget-tier-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.budget-tier-title {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin: 0;
}
.budget-tier-badge {
    background: rgba(0, 198, 255, 0.15);
    color: var(--secondary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Breadcrumb Navigation */
.breadcrumb-container {
    margin-bottom: 25px;
    font-size: 0.9rem;
}
.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--text-muted, #888);
}
.breadcrumb-list li {
    display: inline-flex;
    align-items: center;
}
.breadcrumb-list li+li::before {
    content: "›";
    margin: 0 10px;
    color: var(--border-color, #444);
    font-weight: bold;
}
.breadcrumb-list a {
    color: var(--text-muted, #aaa);
    text-decoration: none;
    transition: color 0.2s ease;
}
.breadcrumb-list a:hover {
    color: var(--secondary-color, #00c6ff);
    text-decoration: underline;
}
.breadcrumb-list li[aria-current="page"] {
    color: var(--text-main, #fff);
    font-weight: 500;
}

/* Air purifier guide components */
.info-box {
    background: linear-gradient(135deg, rgba(0, 198, 255, 0.08), rgba(0, 114, 255, 0.05));
    border: 1px solid rgba(0, 198, 255, 0.25);
    border-left: 4px solid var(--secondary-color);
    border-radius: 4px 16px 16px 4px;
    padding: 24px 28px;
    margin: 0 0 30px;
}
.info-box > strong {
    display: block;
    color: var(--secondary-color);
    font-family: 'Outfit', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
    margin-bottom: 10px;
}
.info-box p { margin-bottom: 0 !important; color: var(--text-main); }
.hero-figure { margin: 0 0 40px; }
.guide-hero-img {
    width: 100%;
    height: auto;
    max-height: 420px;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 14px;
}
ul.takeaways { list-style: none; padding: 0; }
ul.takeaways li {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px 16px 52px;
    transition: var(--transition);
}
ul.takeaways li::before {
    content: "\2713";
    position: absolute;
    left: 18px;
    top: 14px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}
ul.takeaways li:hover { border-color: var(--primary-color); transform: translateX(4px); }
.disclosure {
    background: rgba(255, 153, 0, 0.05);
    border: 1px solid rgba(255, 153, 0, 0.3);
    border-radius: 12px;
    padding: 18px 22px;
    margin: 0 0 30px;
}
.disclosure strong { color: var(--amazon-orange); display: block; margin-bottom: 6px; }
.disclosure p { margin-bottom: 0 !important; font-size: 0.95rem !important; }
.pick {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 26px 28px 8px;
    margin-bottom: 24px;
    transition: var(--transition);
}
.pick:hover { border-color: var(--primary-color); transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0, 114, 255, 0.12); }
.pick h3 { margin-top: 0 !important; background: var(--accent-gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.pick p { margin-bottom: 1rem !important; font-size: 1.02rem !important; }
.pick strong { color: var(--text-main); }
.pick-link a {
    display: inline-block;
    background: var(--amazon-orange);
    color: #111;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.95rem;
}
.pick-link a:hover { filter: brightness(1.1); }

/* Homepage structure (replaces inline styles) */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--primary-color);
    color: #fff;
    padding: 10px 16px;
    border-radius: 0 0 8px 0;
    z-index: 2000;
}
.skip-link:focus { left: 0; }
.trust-banner {
    padding: 50px 0;
    background: rgba(255, 255, 255, 0.015);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.section-alt { background: rgba(0, 0, 0, 0.25); }
.section-header--compact { max-width: 700px; margin: 0 auto 40px; }
.section-header--compact h2 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.section-lead { color: var(--text-muted); font-size: 1.05rem; }
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
    gap: 24px;
}
.category-grid--single {
    grid-template-columns: minmax(min(100%, 280px), 420px);
    justify-content: center;
}
.category-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: var(--transition);
}
.category-card:hover,
.category-card:focus-within {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 114, 255, 0.12);
}
.category-card h3 { margin: 0; }
.category-card h3 a { color: inherit; text-decoration: none; }
.category-card h3 a::after { content: ""; position: absolute; inset: 0; border-radius: 16px; }
.category-card-text { color: var(--text-muted); line-height: 1.7; flex-grow: 1; margin: 0; }
.category-card .text-link { color: var(--secondary-color); font-weight: 600; }
.category-card .btn { align-self: flex-start; }
.editorial-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid var(--border-color);
}
.container--narrow { max-width: 900px; }
.editorial-card h2 { font-size: 1.8rem; margin-bottom: 20px; }
.editorial-text { color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.editorial-actions { display: flex; gap: 20px; flex-wrap: wrap; }
.editorial-actions .btn { margin: 0; }
@media (max-width: 600px) { .editorial-card { padding: 28px 22px; } }
.pick p a { color: var(--secondary-color); font-weight: 600; }
.table-note { font-size: 0.9rem !important; color: var(--text-muted) !important; margin-top: -10px; }

/* ==========================================================================
   Homepage Enhanced Components: Sizing Calculator, Blueprint & Standards
   ========================================================================== */

/* Hero Enhancement */
.hero {
    position: relative;
    padding-top: 140px;
    padding-bottom: 90px;
    background: radial-gradient(circle at 65% 35%, rgba(0, 114, 255, 0.12) 0%, rgba(10, 10, 10, 0.98) 75%);
}

.hero-stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
    margin-bottom: 20px;
}

.stat-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-chip-icon {
    color: var(--secondary-color);
    font-weight: 700;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 114, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-floating-pill {
    position: absolute;
    bottom: 24px;
    left: 24px;
    right: 24px;
    background: rgba(15, 15, 15, 0.85);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.hero-pill-badge {
    background: var(--accent-gradient);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: 999px;
    text-transform: uppercase;
}

.hero-pill-text {
    font-size: 0.84rem;
    color: var(--text-main);
    line-height: 1.4;
    margin: 0;
}

/* Category Grid & Cards Polish */
.category-card-custom {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.35s cubic-bezier(0.165, 0.84, 0.44, 1), border-color 0.35s ease, box-shadow 0.35s ease;
}

.category-card-custom:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 198, 255, 0.4);
    box-shadow: 0 20px 45px rgba(0, 114, 255, 0.15);
}

.category-card-img-wrapper {
    position: relative;
    height: 220px;
    background: #111;
    overflow: hidden;
}

.category-card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.category-card-custom:hover .category-card-img-wrapper img {
    transform: scale(1.06);
}

.category-card-body {
    padding: 26px 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-header-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.card-spec-tag {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--secondary-color);
    background: rgba(0, 198, 255, 0.08);
    border: 1px solid rgba(0, 198, 255, 0.2);
    padding: 4px 10px;
    border-radius: 6px;
}

.card-read-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.category-card-body h3 {
    font-size: 1.32rem;
    margin-bottom: 10px;
    color: var(--text-main);
}

.category-card-body h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

.category-card-body h3 a:hover {
    color: var(--secondary-color);
}

.category-card-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.6;
    margin-bottom: 18px;
    flex-grow: 1;
}

.card-key-specs {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 14px;
}

.card-key-specs li {
    font-size: 0.8rem;
    color: #c0c0c0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-key-specs li span.check {
    color: #00e676;
    font-weight: bold;
    font-size: 0.85rem;
}

.card-action-row {
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-cta-link {
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s ease, color 0.2s ease;
}

.card-cta-link:hover {
    color: #fff;
    gap: 10px;
}

/* Sizing Calculator Section */
.calc-section {
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.5) 0%, rgba(18, 22, 28, 0.7) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.calc-container-box {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 28px;
    padding: 48px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
    .calc-container-box {
        padding: 28px 20px;
    }
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    gap: 48px;
    align-items: start;
}

@media (max-width: 992px) {
    .calc-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}

.calc-controls {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 30px;
}

.calc-field-group {
    margin-bottom: 24px;
}

.calc-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.calc-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
}

.calc-value-display {
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.calc-range-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #262626;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.calc-range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--secondary-color);
    box-shadow: 0 0 12px rgba(0, 198, 255, 0.6);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.calc-range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.calc-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    background: rgba(0, 0, 0, 0.25);
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.calc-toggle-label {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.calc-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
}

.calc-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider-switch {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #333;
    transition: .3s;
    border-radius: 26px;
}

.slider-switch:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider-switch {
    background-color: var(--primary-color);
}

input:checked + .slider-switch:before {
    transform: translateX(22px);
}

.calc-results {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.results-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.res-card {
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 22px 18px;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.res-card:hover {
    border-color: rgba(0, 198, 255, 0.3);
    transform: translateY(-2px);
}

.res-card-title {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
}

.res-card-val {
    font-family: 'Outfit', sans-serif;
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.1;
    margin-bottom: 6px;
}

.res-card-val span {
    font-size: 1.1rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.res-card-note {
    font-size: 0.78rem;
    color: #888;
    line-height: 1.4;
    margin: 0;
}

.calc-advice-box {
    background: rgba(0, 114, 255, 0.06);
    border: 1px solid rgba(0, 114, 255, 0.2);
    border-radius: 14px;
    padding: 18px 22px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.calc-advice-box .icon {
    font-size: 1.4rem;
    line-height: 1;
}

.calc-advice-text {
    font-size: 0.88rem;
    color: #d0d8e2;
    line-height: 1.5;
    margin: 0;
}

.calc-advice-text strong {
    color: #fff;
}

/* Posture Anatomy & Setup Blueprint */
.blueprint-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 32px 26px;
    position: relative;
    transition: var(--transition);
}

.step-card:hover {
    border-color: rgba(0, 198, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.step-num {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.12);
    margin-bottom: 12px;
    line-height: 1;
}

.step-card:hover .step-num {
    color: var(--secondary-color);
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.step-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.step-metric-tag {
    display: inline-block;
    font-size: 0.76rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
    color: #00c6ff;
    border: 1px solid rgba(0, 198, 255, 0.15);
}

/* Standards & Compliance Section */
.standards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 36px;
}

.standard-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 32px;
    position: relative;
    overflow: hidden;
}

.standard-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-gradient);
}

.standard-card h3 {
    font-size: 1.28rem;
    margin-bottom: 10px;
}

.standard-badge {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--secondary-color);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.standard-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 16px;
}

.standard-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.standard-card li {
    font-size: 0.84rem;
    color: #b8b8b8;
    position: relative;
    padding-left: 18px;
}

.standard-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* FAQ Accordion */
.faq-accordion {
    max-width: 820px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.faq-item[open] {
    border-color: rgba(0, 198, 255, 0.35);
}

.faq-summary {
    padding: 20px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
    transition: color 0.2s ease;
}

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

.faq-summary::after {
    content: "+";
    font-family: monospace;
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--secondary-color);
    transition: transform 0.25s ease;
}

.faq-item[open] .faq-summary::after {
    transform: rotate(45deg);
}

.faq-summary:hover {
    color: var(--secondary-color);
}

.faq-content {
    padding: 0 24px 22px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 16px;
}

.faq-content p {
    margin: 0;
}

/* Nav Dropdown Specifics */
.nav-dropdown-details {
    position: relative;
}

.nav-dropdown-summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-main);
    font-weight: 500;
}

.nav-dropdown-summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown-summary::after {
    content: "▾";
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.nav-dropdown-details[open] .nav-dropdown-summary::after {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 10px 0;
    min-width: 250px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
    z-index: 1001;
}

.nav-dropdown-menu a {
    display: block;
    padding: 9px 20px;
    font-size: 0.88rem;
    color: #c4c4c4;
    transition: background 0.15s ease, color 0.15s ease;
}

.nav-dropdown-menu a:hover {
    background: rgba(0, 114, 255, 0.12);
    color: #fff;
}