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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #2d2d2d;
            background: #f8f9fa;
        }

        /* Header */
        header {
            background: #1a1a2e;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .logo span { color: #155DFC; }
        nav a {
            color: #ccc;
            text-decoration: none;
            font-size: 0.95rem;
            margin-left: 24px;
            transition: color 0.2s;
        }
        nav a:hover { color: #155DFC; }

        /* Main Content */
        .container {
            max-width: 820px;
            margin: 0 auto;
            padding: 40px 24px 60px;
        }

        /* Breadcrumb */
        .breadcrumb {
            font-size: 0.85rem;
            color: #888;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: #155DFC;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }

        /* Affiliate Disclosure */
        .disclosure {
            background: #fff3cd;
            border: 1px solid #ffc107;
            border-radius: 8px;
            padding: 14px 20px;
            font-size: 0.85rem;
            color: #664d03;
            margin-bottom: 32px;
            line-height: 1.5;
        }
        .disclosure strong { color: #553c00; }

        /* Article Header */
        .article-header {
            margin-bottom: 36px;
        }
        .article-header .category {
            display: inline-block;
            background: #155DFC;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 16px;
        }
        h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1a1a2e;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .article-meta {
            font-size: 0.9rem;
            color: #666;
        }
        .article-meta time { font-weight: 500; }

        /* Quick Verdict Box */
        .verdict-box {
            background: linear-gradient(135deg, #e8f0fe, #f0f4ff);
            border-left: 5px solid #155DFC;
            border-radius: 0 12px 12px 0;
            padding: 28px 28px 28px 24px;
            margin: 32px 0;
        }
        .verdict-box h2 {
            font-size: 1.2rem;
            color: #155DFC;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .verdict-box ul {
            list-style: none;
            padding: 0;
        }
        .verdict-box li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(21,93,252,0.1);
            font-size: 0.95rem;
        }
        .verdict-box li:last-child { border-bottom: none; }
        .verdict-box li strong { color: #1a1a2e; }

        /* Table of Contents */
        .toc {
            background: #fff;
            border: 1px solid #e9ecef;
            border-radius: 10px;
            padding: 24px 28px;
            margin: 28px 0 36px;
        }
        .toc h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #1a1a2e;
            margin-bottom: 12px;
        }
        .toc ol {
            margin: 0;
            padding-left: 20px;
        }
        .toc li {
            padding: 4px 0;
            font-size: 0.92rem;
        }
        .toc a {
            color: #155DFC;
            text-decoration: none;
        }
        .toc a:hover { text-decoration: underline; }

        /* Content Styles */
        .content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a1a2e;
            margin: 48px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e9ecef;
        }
        .content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #1a1a2e;
            margin: 32px 0 14px;
        }
        .content p {
            font-size: 1.05rem;
            color: #444;
            margin-bottom: 18px;
        }
        .content ul, .content ol {
            margin: 0 0 20px 24px;
            font-size: 1.02rem;
            color: #444;
        }
        .content li { margin-bottom: 8px; }
        .content a { color: #155DFC; text-decoration: none; }
        .content a:hover { text-decoration: underline; }

        /* Comparison Table */
        .table-wrapper {
            overflow-x: auto;
            margin: 28px 0;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.08);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            min-width: 500px;
        }
        thead th {
            background: #1a1a2e;
            color: #fff;
            padding: 14px 16px;
            text-align: left;
            font-size: 0.9rem;
            font-weight: 600;
        }
        thead th:first-child { border-radius: 12px 0 0 0; }
        thead th:last-child { border-radius: 0 12px 0 0; }
        tbody td {
            padding: 12px 16px;
            border-bottom: 1px solid #eee;
            font-size: 0.92rem;
            vertical-align: middle;
        }
        tbody tr:nth-child(even) { background: #f8f9fa; }
        tbody tr:hover { background: #eef2ff; }
        tbody td:first-child { font-weight: 600; color: #1a1a2e; }
        .winner { background: #e6ffed !important; }

        /* Pros/Cons */
        .pros-cons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 20px 0;
        }
        .pros, .cons {
            background: #fff;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 1px 6px rgba(0,0,0,0.06);
        }
        .pros { border-top: 3px solid #22c55e; }
        .cons { border-top: 3px solid #ef4444; }
        .pros h4 { color: #16a34a; margin-bottom: 10px; font-size: 0.95rem; }
        .cons h4 { color: #dc2626; margin-bottom: 10px; font-size: 0.95rem; }
        .pros ul, .cons ul { list-style: none; padding: 0; margin: 0; }
        .pros li, .cons li { padding: 6px 0; font-size: 0.9rem; color: #555; }
        .pros li::before { content: "+  "; color: #22c55e; font-weight: 700; }
        .cons li::before { content: "-  "; color: #ef4444; font-weight: 700; }

        /* CTA Buttons */
        .cta-button {
            display: inline-block;
            background: #155DFC;
            color: #fff;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            transition: background 0.2s, transform 0.15s;
            margin: 8px 8px 8px 0;
        }
        .cta-button:hover { background: #1249d6; transform: translateY(-1px); }
        .cta-button.secondary {
            background: transparent;
            color: #155DFC;
            border: 2px solid #155DFC;
        }
        .cta-button.secondary:hover { background: #155DFC; color: #fff; }
        .cta-button.heygen { background: #6c5ce7; }
        .cta-button.heygen:hover { background: #5a4bd6; }
        .cta-button.synthesia { background: #00b894; }
        .cta-button.synthesia:hover { background: #00a381; }
        .cta-row { margin: 24px 0 32px; }

        /* Tool Header */
        .tool-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 16px;
        }
        .tool-badge {
            display: inline-block;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            text-align: center;
            line-height: 48px;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .tool-badge.heygen { background: #6c5ce7; }
        .tool-badge.synthesia { background: #00b894; }

        /* Info Box */
        .info-box {
            background: #f0f7ff;
            border: 1px solid #d0e3ff;
            border-radius: 10px;
            padding: 20px 24px;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .info-box strong { color: #155DFC; }

        /* FAQ */
        .faq-item {
            background: #fff;
            border: 1px solid #e9ecef;
            border-radius: 10px;
            margin-bottom: 12px;
            padding: 20px 24px;
        }
        .faq-item h3 {
            font-size: 1.05rem;
            color: #1a1a2e;
            margin: 0 0 10px;
        }
        .faq-item p {
            font-size: 0.95rem;
            color: #555;
            margin: 0;
        }

        /* Final Verdict */
        .final-verdict {
            background: #1a1a2e;
            color: #fff;
            border-radius: 14px;
            padding: 36px 32px;
            margin: 40px 0;
        }
        .final-verdict h2 { color: #fff; border-bottom: 2px solid #333; }
        .final-verdict p { color: #ccc; }
        .final-verdict strong { color: #fff; }
        .final-verdict .cta-button { background: #155DFC; }
        .final-verdict .cta-button:hover { background: #3b7dfc; }

        /* Score Card */
        .score-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 28px 0;
        }
        .score-item {
            background: #fff;
            border-radius: 10px;
            padding: 20px 24px;
            box-shadow: 0 1px 6px rgba(0,0,0,0.06);
            text-align: center;
        }
        .score-item h4 {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: #888;
            margin-bottom: 8px;
        }
        .score-item .score {
            font-size: 2rem;
            font-weight: 800;
        }
        .score-item .score.heygen { color: #6c5ce7; }
        .score-item .score.synthesia { color: #00b894; }
        .score-item .label { font-size: 0.9rem; color: #555; margin-top: 4px; }

        /* Footer */
        footer {
            background: #1a1a2e;
            color: #888;
            text-align: center;
            padding: 32px 24px;
            font-size: 0.85rem;
        }
        footer a { color: #155DFC; text-decoration: none; }
        footer a:hover { text-decoration: underline; }

        /* Responsive */
        @media (max-width: 768px) {
            h1 { font-size: 1.6rem; }
            .content h2 { font-size: 1.3rem; }
            .pros-cons { grid-template-columns: 1fr; }
            .score-card { grid-template-columns: 1fr; }
            .container { padding: 24px 16px 40px; }
            .header-inner { flex-direction: column; gap: 12px; }
            nav a { margin-left: 16px; }
            .cta-button { display: block; text-align: center; margin: 8px 0; }
            .final-verdict { padding: 24px 20px; }
        }
    
        /* Mobile global fixes */
        @media (max-width: 768px) {
            body { font-size: 16px; }
            p, li, td, th { font-size: 16px !important; }
            img { max-width: 100%; height: auto; }
            .cta-button, .cta-btn, a.cta-button { display: block; width: 100%; text-align: center; min-height: 48px; padding: 14px 20px; box-sizing: border-box; }
        }
        .cta-box { background: linear-gradient(135deg, #155DFC 0%, #1a1a2e 100%); border-radius: 12px; padding: 28px 32px; margin: 32px 0; text-align: center; color: #fff; }
        .cta-box h3 { color: #fff; font-size: 1.3rem; margin-bottom: 10px; }
        .cta-box p { color: rgba(255,255,255,0.9); margin-bottom: 18px; font-size: 0.98rem; }
        .cta-button { display: inline-block; background: #fff; color: #155DFC; font-weight: 700; padding: 12px 28px; border-radius: 8px; text-decoration: none; font-size: 15px; transition: background 0.2s, transform 0.15s; }
        .cta-button:hover { background: #f0f0f0; transform: translateY(-1px); }