/**
 * ComprarOnline Blog Stylesheet
 * Responsive, Modern, and High-Conversion
 */

:root {
    --co-blog-primary: #0f172a;
    --co-blog-accent: #10b981;
    --co-blog-blue: #0284c7;
    --co-blog-amber: #f59e0b;
    --co-blog-bg: #f8fafc;
    --co-blog-card-bg: #ffffff;
    --co-blog-border: #e2e8f0;
    --co-blog-text: #1e293b;
    --co-blog-muted: #64748b;
    --co-blog-radius: 16px;
}

@media (min-width: 922px) {
    html body.single-post.ast-narrow-container .site-content > .ast-container,
    html body.ast-narrow-container .site-content > .ast-container,
    html body.single-post .site-content > .ast-container,
    html body.blog .site-content > .ast-container,
    html body.archive.category .site-content > .ast-container,
    html body.archive.tag .site-content > .ast-container {
        max-width: 100% !important;
        width: 100% !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
}

body.single-post #primary,
body.blog #primary {
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
}

.co-blog-wrap,
.co-article-wrap {
    width: 100% !important;
    max-width: none !important;
    background-color: var(--co-blog-bg);
    min-height: 80vh;
    padding-bottom: 70px;
}

.co-blog-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    box-sizing: border-box;
}

/* ==========================================================================
   Blog Hub Hero
   ========================================================================== */
.co-blog-hero {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 70px 0 50px;
    color: #ffffff;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.co-blog-hero-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
    font-size: 11.5px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 18px;
    border-radius: 999px;
    margin-bottom: 16px;
}

.co-blog-hero-title {
    font-size: clamp(28px, 4vw, 46px);
    font-weight: 800;
    color: #ffffff !important;
    margin: 0 0 14px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.co-blog-hero-subtitle {
    font-size: 16.5px;
    color: #94a3b8;
    max-width: 760px;
    margin: 0 auto 30px;
    line-height: 1.6;
}

.co-blog-nav-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.co-nav-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #f1f5f9 !important;
    text-decoration: none !important;
    font-size: 13.5px;
    font-weight: 600;
    transition: all 0.25s ease;
}

.co-nav-pill:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: #10b981;
    color: #ffffff !important;
    transform: translateY(-2px);
}

.co-nav-pill.is-active {
    background: #10b981;
    border-color: #10b981;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

/* ==========================================================================
   Blog Grid & Cards
   ========================================================================== */
.co-blog-content-section {
    padding-top: 40px;
}

.co-blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 40px;
}

.co-blog-card {
    background: var(--co-blog-card-bg);
    border: 1px solid var(--co-blog-border);
    border-radius: var(--co-blog-radius);
    overflow: hidden;
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.05);
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.co-blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
    border-color: #cbd5e1;
}

.co-blog-card-thumb-link {
    position: relative;
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #e2e8f0;
}

.co-blog-card-img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    transition: transform 0.4s ease !important;
    display: block !important;
    margin: 0 !important;
}

.co-blog-card:hover .co-blog-card-img {
    transform: scale(1.05);
}

.co-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.co-placeholder-icon {
    font-size: 42px;
}

.co-blog-card-cat-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(6px);
    color: #f8fafc;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 4px 12px;
    border-radius: 999px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.co-blog-card-body {
    padding: 22px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.co-blog-card-meta {
    font-size: 13px;
    color: var(--co-blog-muted);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.co-meta-sep {
    opacity: 0.5;
}

.co-blog-card-title {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.35;
    margin: 0 0 12px;
}

.co-blog-card-title a {
    color: var(--co-blog-primary) !important;
    text-decoration: none !important;
    transition: color 0.2s ease;
}

.co-blog-card-title a:hover {
    color: var(--co-blog-accent) !important;
}

.co-blog-card-excerpt {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 18px;
}

.co-blog-card-excerpt p {
    margin: 0;
}

.co-blog-card-footer {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid #f1f5f9;
}

.co-blog-read-more {
    font-size: 14px;
    font-weight: 700;
    color: var(--co-blog-blue) !important;
    text-decoration: none !important;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s ease;
}

.co-blog-read-more:hover {
    color: #0369a1 !important;
}

.co-blog-read-more:hover .co-arrow {
    transform: translateX(4px);
}

/* ==========================================================================
   Store Cross Banners on Hub
   ========================================================================== */
.co-blog-store-banners {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 40px 0 20px;
}

.co-store-banner {
    border-radius: var(--co-blog-radius);
    padding: 32px 28px;
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08);
}

.co-banner-seeds {
    background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
    border: 1px solid #059669;
}

.co-banner-montessori {
    background: linear-gradient(135deg, #78350f 0%, #b45309 100%);
    border: 1px solid #d97706;
}

.co-banner-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.co-store-banner h3 {
    color: #ffffff !important;
    font-size: 21px;
    font-weight: 800;
    margin: 0 0 10px;
    line-height: 1.3;
}

.co-store-banner p {
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
    line-height: 1.55;
    margin: 0 0 20px;
}

.co-banner-btn {
    display: inline-block;
    background: #ffffff;
    color: #0f172a !important;
    padding: 9px 20px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 700;
    text-decoration: none !important;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

.co-banner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Single Article Styling
   ========================================================================== */
.co-breadcrumbs {
    background: #ffffff;
    border-bottom: 1px solid var(--co-blog-border);
    padding: 12px 0;
    font-size: 13.5px;
    color: var(--co-blog-muted);
}

.co-breadcrumbs .co-blog-container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.co-breadcrumbs a {
    color: var(--co-blog-muted) !important;
    text-decoration: none !important;
    transition: color 0.2s ease;
}

.co-breadcrumbs a:hover {
    color: var(--co-blog-accent) !important;
}

.co-bc-sep {
    opacity: 0.4;
}

.co-bc-current {
    color: var(--co-blog-primary);
    font-weight: 600;
}

.co-article-hero {
    position: relative;
    background: #0f172a;
    color: #ffffff;
    min-height: 380px;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}

.co-hero-bg-wrap {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.co-hero-bg-img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    opacity: 0.45;
    filter: brightness(0.8);
}

.co-hero-overlay {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 60px 0 40px;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.2) 0%, rgba(15, 23, 42, 0.95) 100%);
}

.co-article-cat-pill {
    display: inline-block;
    background: var(--co-blog-accent);
    color: #ffffff !important;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 18px;
    text-decoration: none !important;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

.co-article-title {
    font-size: clamp(26px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    color: #ffffff !important;
    margin: 0 0 20px;
    max-width: 900px;
    letter-spacing: -0.5px;
}

.co-article-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 14px;
    color: #cbd5e1;
}

.co-meta-author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.co-author-avatar {
    width: 32px !important;
    height: 32px !important;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
}

.co-meta-dot {
    opacity: 0.5;
}

/* Layout 3 Columnas */
.co-article-body-section {
    padding: 48px 0;
}

.co-article-layout-grid {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr) 56px;
    gap: 32px;
    align-items: start;
    box-sizing: border-box;
    width: 100%;
}

.co-article-main-col {
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
}

/* Sticky TOC */
.co-article-sidebar-left {
    position: sticky;
    top: 90px;
    min-width: 0;
}

.co-toc-box {
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    border-radius: 14px;
    padding: 18px;
    box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.co-toc-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid #f1f5f9;
}

.co-toc-title {
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--co-blog-primary) !important;
    margin: 0;
}

.co-toc-nav ul {
    list-style: none !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.co-toc-nav a {
    font-size: 13px;
    color: #475569 !important;
    text-decoration: none !important;
    display: block;
    padding: 6px 10px;
    border-left: 2px solid transparent;
    border-radius: 0 6px 6px 0;
    transition: all 0.2s ease;
    line-height: 1.4;
}

.co-toc-nav a:hover {
    color: var(--co-blog-accent) !important;
    border-left-color: var(--co-blog-accent);
    background: #f0fdf4;
}

.co-toc-nav a.is-active {
    color: #065f46 !important;
    font-weight: 700;
    border-left-color: var(--co-blog-accent);
    background: #ecfdf5;
}

.co-toc-nav a.toc-h3 {
    padding-left: 20px;
    font-size: 12px;
    color: #64748b !important;
}

/* Article Content Body */
.co-article-content {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--co-blog-text);
    max-width: 74ch;
}

.co-blog-lead {
    font-size: 1.18rem;
    line-height: 1.7;
    color: var(--co-blog-primary);
    font-weight: 500;
    margin-bottom: 24px;
    border-left: 4px solid var(--co-blog-accent);
    padding-left: 18px;
}

.co-article-content h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--co-blog-primary);
    margin: 44px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
    scroll-margin-top: 100px;
    line-height: 1.25;
}

.co-article-content h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--co-blog-primary);
    margin: 30px 0 12px;
    scroll-margin-top: 100px;
    line-height: 1.35;
}

.co-article-content p {
    margin: 0 0 1.5em;
    color: var(--co-blog-text);
}

.co-article-content a {
    color: var(--co-blog-blue) !important;
    font-weight: 600;
    text-decoration: underline !important;
    text-underline-offset: 3px;
    transition: color 0.2s ease;
}

.co-article-content a:hover {
    color: #0369a1 !important;
}

.co-article-content ul,
.co-article-content ol {
    margin: 0 0 1.5em;
    padding-left: 1.5em;
}

.co-article-content li {
    margin-bottom: 0.6em;
    line-height: 1.7;
}

/* Callouts */
.co-blog-callout {
    display: flex;
    gap: 14px;
    padding: 18px 22px;
    border-radius: 12px;
    margin: 24px 0;
    font-size: 15px;
    line-height: 1.6;
}

.co-callout-info {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #166534;
}

.co-callout-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
}

.co-callout-icon {
    font-size: 22px;
    flex-shrink: 0;
    line-height: 1.2;
}

/* Macro-Zones Cards */
.co-zones-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 26px 0;
    width: 100%;
    box-sizing: border-box;
}

.co-zone-card {
    border-radius: 12px;
    border: 1px solid var(--co-blog-border);
    background: #ffffff;
    padding: 16px 14px;
    box-shadow: 0 3px 10px rgba(15, 23, 42, 0.04);
    min-width: 0;
    box-sizing: border-box;
    word-break: break-word;
    overflow-wrap: break-word;
}

.co-zone-pill {
    display: inline-block;
    background: #f1f5f9;
    color: #475569;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    margin-bottom: 8px;
}

.co-zone-header h3 {
    font-size: 16px;
    margin: 0 0 12px;
    color: var(--co-blog-primary);
}

.co-zone-body p {
    font-size: 13.5px;
    margin-bottom: 10px;
}

.co-zone-body ul {
    font-size: 13px;
    padding-left: 1.2em;
    margin: 0;
}

.co-zone-body li {
    margin-bottom: 6px;
}

/* Responsive Tables */
.co-table-wrapper {
    overflow-x: auto;
    margin: 30px 0;
    border-radius: 12px;
    border: 1px solid var(--co-blog-border);
    box-shadow: 0 3px 12px rgba(15, 23, 42, 0.04);
}

.co-blog-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
    background: #ffffff;
}

.co-blog-table th {
    background: var(--co-blog-primary);
    color: #ffffff;
    padding: 13px 16px;
    font-weight: 700;
}

.co-blog-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
}

.co-blog-table tr:nth-child(even) td {
    background: #f8fafc;
}

.co-blog-table tr:hover td {
    background: #f0fdf4;
}

/* Companion Grid */
.co-companion-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 26px 0;
}

.co-companion-box {
    border-radius: 12px;
    padding: 22px;
}

.co-companion-good {
    border: 1px solid #86efac;
    background: #f0fdf4;
}

.co-companion-good h4 {
    color: #166534;
    margin: 0 0 12px;
    font-size: 16px;
}

.co-companion-bad {
    border: 1px solid #fca5a5;
    background: #fef2f2;
}

.co-companion-bad h4 {
    color: #991b1b;
    margin: 0 0 12px;
    font-size: 16px;
}

.co-companion-box ul {
    margin: 0;
    padding-left: 1.2em;
    font-size: 13.5px;
}

.co-companion-box li {
    margin-bottom: 8px;
}

/* Checklist */
.co-blog-checklist {
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    border-radius: 12px;
    padding: 24px 28px 24px 44px;
    margin: 26px 0;
}

.co-blog-checklist li {
    margin-bottom: 12px;
    font-size: 15px;
    line-height: 1.6;
}

/* CTA Banner in Article */
.co-blog-cta-banner {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: 16px;
    padding: 32px 28px;
    color: #ffffff;
    margin: 40px 0 20px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.co-cta-badge {
    display: inline-block;
    background: var(--co-blog-accent);
    color: #ffffff;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
}

.co-blog-cta-banner h3 {
    color: #ffffff !important;
    font-size: 22px;
    font-weight: 800;
    margin: 0 0 10px;
}

.co-blog-cta-banner p {
    color: #cbd5e1;
    font-size: 14.5px;
    line-height: 1.6;
    margin: 0 0 16px;
}

.co-cta-button {
    display: inline-block;
    background: var(--co-blog-accent);
    color: #ffffff !important;
    padding: 11px 24px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    text-decoration: none !important;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.co-cta-button:hover {
    background: #059669;
    transform: translateY(-2px);
}

/* Tags in Article */
.co-article-tags-wrap {
    margin: 36px 0;
    padding-top: 20px;
    border-top: 1px solid var(--co-blog-border);
}

.co-tags-label {
    display: block;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--co-blog-muted);
    margin-bottom: 10px;
}

.co-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.co-tag-pill {
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    color: var(--co-blog-text) !important;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    text-decoration: none !important;
    transition: all 0.2s ease;
}

.co-tag-pill:hover {
    border-color: var(--co-blog-accent);
    color: var(--co-blog-accent) !important;
    background: #f0fdf4;
}

/* Trust Box */
.co-article-trust-box {
    display: flex;
    gap: 18px;
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    border-radius: 14px;
    padding: 22px;
    margin: 30px 0;
    box-shadow: 0 3px 10px rgba(15, 23, 42, 0.04);
}

.co-trust-avatar img {
    width: 60px !important;
    height: 60px !important;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--co-blog-accent);
}

.co-trust-info h4 {
    margin: 0 0 6px;
    font-size: 15px;
    font-weight: 800;
    color: var(--co-blog-primary);
}

.co-trust-info p {
    margin: 0;
    font-size: 13px;
    color: var(--co-blog-muted);
    line-height: 1.5;
}

/* Sticky Share Buttons */
.co-article-sidebar-right {
    position: sticky;
    top: 90px;
}

.co-share-sticky-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.co-share-label {
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--co-blog-muted);
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    margin-bottom: 4px;
}

.co-share-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #475569;
    text-decoration: none !important;
    transition: all 0.25s ease;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.05);
    cursor: pointer;
    padding: 0;
}

.co-share-wa:hover {
    background: #25d366;
    color: #ffffff;
    border-color: #25d366;
    transform: translateY(-3px);
}

.co-share-x:hover {
    background: #0f172a;
    color: #ffffff;
    border-color: #0f172a;
    transform: translateY(-3px);
}

.co-share-fb:hover {
    background: #1877f2;
    color: #ffffff;
    border-color: #1877f2;
    transform: translateY(-3px);
}

.co-share-copy:hover {
    background: var(--co-blog-blue);
    color: #ffffff;
    border-color: var(--co-blog-blue);
    transform: translateY(-3px);
}

/* Related Posts Section */
.co-article-related-section {
    padding: 50px 0;
    background: #f1f5f9;
    border-top: 1px solid var(--co-blog-border);
}

.co-related-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--co-blog-primary);
    margin: 0 0 30px;
    text-align: center;
}

/* ==========================================================================
   AI SEO & Princeton GEO Components: FAQ & Authoritative Citations
   ========================================================================== */
.co-blog-faq-section {
    margin: 40px 0;
}

.co-faq-item {
    background: #ffffff;
    border: 1px solid var(--co-blog-border);
    border-radius: 12px;
    margin-bottom: 14px;
    overflow: hidden;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
}

.co-faq-item[open] {
    border-color: #93c5fd;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.08);
}

.co-faq-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--co-blog-primary);
    list-style: none;
    user-select: none;
    transition: color 0.2s ease, background-color 0.2s ease;
}

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

.co-faq-summary:hover {
    color: var(--co-blog-accent);
    background-color: #f8fafc;
}

.co-faq-summary::after {
    content: "+";
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--co-blog-accent);
    transition: transform 0.25s ease;
    line-height: 1;
    margin-left: 14px;
}

.co-faq-item[open] .co-faq-summary::after {
    content: "−";
    transform: rotate(180deg);
}

.co-faq-content {
    padding: 0 22px 20px 22px;
    font-size: 0.98rem;
    line-height: 1.7;
    color: #334155;
    border-top: 1px solid #f1f5f9;
    padding-top: 14px;
}

.co-faq-content p:last-child {
    margin-bottom: 0;
}

/* Authoritative References & Sources */
.co-blog-sources-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #0284c7;
    border-radius: 12px;
    padding: 24px 26px;
    margin: 40px 0;
}

.co-sources-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.co-sources-badge {
    background: #0284c7;
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 3px 10px;
    border-radius: 6px;
}

.co-sources-header h4 {
    margin: 0;
    font-size: 1.12rem;
    font-weight: 800;
    color: var(--co-blog-primary);
}

.co-sources-list {
    margin: 0;
    padding-left: 20px;
    font-size: 0.92rem;
    color: #475569;
    line-height: 1.65;
}

.co-sources-list li {
    margin-bottom: 8px;
}

.co-sources-list a {
    color: #0284c7;
    font-weight: 600;
    text-decoration: underline;
    transition: color 0.15s ease;
}

.co-sources-list a:hover {
    color: #0369a1;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
    .co-article-layout-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 24px;
    }
    .co-article-sidebar-left {
        position: static;
        order: 2;
    }
    .co-article-main-col {
        order: 1;
    }
    .co-article-sidebar-right {
        position: static;
        order: 3;
    }
    .co-share-sticky-box {
        flex-direction: row;
        justify-content: center;
        padding-top: 20px;
        border-top: 1px solid var(--co-blog-border);
    }
    .co-share-label {
        writing-mode: horizontal-tb;
        transform: none;
    }
    .co-blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .co-zones-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .co-blog-hero {
        padding: 50px 0 36px;
    }
    .co-blog-grid {
        grid-template-columns: 1fr;
    }
    .co-blog-store-banners {
        grid-template-columns: 1fr;
    }
    .co-companion-grid {
        grid-template-columns: 1fr;
    }
    .co-hero-overlay {
        padding: 36px 0 24px;
    }
    .co-article-body-section {
        padding: 30px 0;
    }
}