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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.7;
            color: #1a1a1a;
            background: #ffffff;
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .header-content {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            text-decoration: none;
            color: white;
        }

        .back-link {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 6px;
            transition: all 0.3s;
        }

        .back-link:hover {
            background: rgba(255,255,255,0.1);
        }

        article {
            max-width: 760px;
            margin: 3.5rem auto 4rem;
            padding: 0 1.75rem;
        }

        h1 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            color: #1a1a1a;
        }

        .meta {
            color: #666;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }

        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem;
            color: #2d3748;
        }

        h3 {
            font-size: 1.3rem;
            margin: 2rem 0 1rem;
            color: #4a5568;
        }

        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }

        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
        }

        li {
            margin-bottom: 0.8rem;
            font-size: 1.05rem;
        }

        strong {
            color: #2d3748;
            font-weight: 600;
        }

        .highlight-box {
            background: #f7fafc;
            border-left: 4px solid #667eea;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 6px;
        }

        .cta-box {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            border-radius: 12px;
            margin: 3rem 0;
        }

        .cta-box h2 {
            color: white;
            margin-bottom: 1rem;
        }

        .cta-box p {
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        .cta-button {
            display: inline-block;
            background: white;
            color: #667eea;
            padding: 1rem 2.5rem;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: transform 0.2s;
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }

        .pricing-card {
            background: #f7fafc;
            padding: 1.5rem;
            border-radius: 8px;
            border: 2px solid #e2e8f0;
        }

        .pricing-card h3,
        .pricing-card h4 {
            font-size: 1.15rem;
            margin: 0 0 0.5rem;
            color: #667eea;
        }

        .pricing-card p {
            font-size: 0.98rem;
            margin: 0;
            color: #4a5568;
        }

        .price {
            font-size: 1.8rem;
            font-weight: 700;
            color: #2d3748;
            margin-bottom: 1rem;
        }

        .case-study {
            background: #fff5f5;
            border-left: 4px solid #fc8181;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 6px;
        }

        footer {
            background: #fafafd;
            border-top: 1px solid #e6e6ef;
            text-align: center;
            padding: 2rem;
            margin-top: 4rem;
        }

        footer a {
            text-decoration: none;
        }

        footer a:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }

            h2 {
                font-size: 1.5rem;
            }

            article {
                margin: 2rem auto 3rem;
                padding: 0 1.25rem;
            }

            .pricing-grid {
                grid-template-columns: 1fr;
            }
        }

        figure {
            margin: 2.5rem 0;
        }

        figure img {
            display: block;
            width: 100%;
            height: auto;
            border-radius: 10px;
            border: 1px solid #e6e6ef;
            box-shadow: 0 6px 24px rgba(20, 20, 50, 0.10);
        }

        figcaption {
            margin-top: 0.75rem;
            font-size: 0.92rem;
            color: #6b6b7b;
            text-align: center;
            line-height: 1.5;
        }

        .article-card {
            display: block;
            padding: 1.5rem 1.75rem;
            margin: 1.25rem 0;
            border: 1px solid #e6e6ef;
            border-radius: 12px;
            text-decoration: none;
            color: inherit;
            transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
        }

        .article-card:hover {
            border-color: #667eea;
            box-shadow: 0 8px 28px rgba(102, 126, 234, 0.14);
            transform: translateY(-2px);
        }

        .article-card h2 {
            margin: 0 0 0.5rem;
            font-size: 1.35rem;
            color: #1a1a1a;
        }

        .article-card p {
            margin: 0 0 0.6rem;
            color: #4a4a58;
        }

        .article-card .meta {
            margin: 0;
        }

        .related {
            margin: 3rem 0 0;
            padding: 1.5rem 1.75rem;
            border: 1px solid #e6e6ef;
            border-radius: 12px;
            background: #fafafd;
        }

        .related h2 {
            font-size: 1.25rem;
            margin: 0 0 0.75rem;
            color: #2d3748;
        }

        .related ul {
            margin: 0;
            list-style: none;
        }

        .related li {
            margin-bottom: 0.55rem;
            font-size: 1rem;
        }

        .related li:last-child {
            margin-bottom: 0;
        }

        .related a {
            color: #5566d8;
            text-decoration: none;
        }

        .related a:hover {
            text-decoration: underline;
        }