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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f5f5f5;
        }

        header {
            background: linear-gradient(135deg, #1b95e0 0%, #0c7abf 100%);
            color: #fff;
            padding: 2rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            text-align: center;
            color: #fff;
        }

        article {
            background: #fff;
            padding: 3rem;
            margin: 2rem auto;
            max-width: 1200px;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        article h2 {
            color: #1b95e0;
            font-size: 2rem;
            margin: 2rem 0 1rem 0;
            font-weight: 600;
        }

        article h3 {
            color: #0c7abf;
            font-size: 1.5rem;
            margin: 1.5rem 0 1rem 0;
            font-weight: 600;
        }

        article h4 {
            color: #333;
            font-size: 1.25rem;
            margin: 1.25rem 0 0.75rem 0;
            font-weight: 600;
        }

        article p {
            margin-bottom: 1.25rem;
            font-size: 1.05rem;
            color: #444;
            line-height: 1.7;
        }

        article ul, article ol {
            margin: 1rem 0 1.5rem 2rem;
        }

        article li {
            margin-bottom: 0.5rem;
            color: #444;
        }

        article strong {
            color: #222;
            font-weight: 600;
        }

        article a {
            color: #1b95e0;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        article a:hover {
            color: #0c7abf;
            text-decoration: underline;
        }

        .transition-section {
            background: #fff;
            padding: 2.5rem 3rem;
            margin: 2rem auto;
            max-width: 1200px;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .transition-section p {
            font-size: 1.05rem;
            color: #444;
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }

        .links-section {
            background: #fff;
            padding: 3rem;
            margin: 2rem auto 3rem;
            max-width: 1200px;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .links-section h3 {
            color: #1b95e0;
            font-size: 1.5rem;
            margin: 2rem 0 1rem 0;
            font-weight: 600;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e0e0e0;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.75rem 2rem;
            margin: 1rem 0 0 0;
        }

        .links-section li {
            margin: 0;
        }

        .links-section a {
            color: #0c7abf;
            text-decoration: none;
            font-size: 1rem;
            transition: all 0.2s ease;
            display: inline-block;
            padding: 0.25rem 0;
        }

        .links-section a:hover {
            color: #1b95e0;
            padding-left: 0.5rem;
        }

        .links-section a::before {
            content: "→ ";
            opacity: 0;
            transition: opacity 0.2s ease;
        }

        .links-section a:hover::before {
            opacity: 1;
        }

        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 2rem 0;
            margin-top: 3rem;
            text-align: center;
        }

        footer p {
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.75rem;
            }

            article, .transition-section, .links-section {
                padding: 1.5rem;
                margin: 1rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.25rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }

            .links-section h3 {
                font-size: 1.25rem;
            }
        }

        @media (max-width: 480px) {
            header {
                padding: 1.5rem 0;
            }

            h1 {
                font-size: 1.5rem;
            }

            article, .transition-section, .links-section {
                padding: 1.25rem;
                border-radius: 4px;
            }

            article p, .transition-section p {
                font-size: 1rem;
            }
        }