* {
            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-color: #f5f7fa;
        }

        header {
            background: linear-gradient(135deg, #0047ab 0%, #0066ff 100%);
            color: white;
            padding: 2rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

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

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .tagline {
            font-size: 0.95rem;
            opacity: 0.9;
            font-weight: 300;
        }

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

        h1 {
            font-size: 2.2rem;
            color: #0047ab;
            margin: 2rem 0 1.5rem 0;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #0066ff;
            font-weight: 600;
        }

        article {
            background: white;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            border-left: 4px solid #0066ff;
        }

        article h2 {
            color: #0047ab;
            font-size: 1.6rem;
            margin: 1.5rem 0 1rem 0;
            font-weight: 600;
        }

        article h3 {
            color: #0055cc;
            font-size: 1.3rem;
            margin: 1.2rem 0 0.8rem 0;
            font-weight: 600;
        }

        article h4 {
            color: #0066ff;
            font-size: 1.1rem;
            margin: 1rem 0 0.6rem 0;
            font-weight: 600;
        }

        article p {
            margin-bottom: 1rem;
            line-height: 1.8;
            color: #444;
        }

        .transition-section {
            background: white;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .transition-section p {
            line-height: 1.8;
            color: #444;
            margin-bottom: 1rem;
        }

        .links-section {
            background: white;
            padding: 2rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .links-section h2 {
            color: #0047ab;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e0e6ed;
            font-weight: 600;
        }

        .links-section h3 {
            color: #0055cc;
            font-size: 1.3rem;
            margin: 1.5rem 0 1rem 0;
            font-weight: 600;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.5rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section li {
            padding: 0.4rem 0;
        }

        .links-section a {
            color: #0066ff;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
            position: relative;
        }

        .links-section a:hover {
            color: #0047ab;
            padding-left: 5px;
        }

        .links-section a::before {
            content: "→";
            position: absolute;
            left: -15px;
            opacity: 0;
            transition: all 0.3s ease;
        }

        .links-section a:hover::before {
            opacity: 1;
            left: -18px;
        }

        footer {
            background: linear-gradient(135deg, #0047ab 0%, #0066ff 100%);
            color: white;
            text-align: center;
            padding: 1.5rem 20px;
            margin-top: 3rem;
        }

        footer a {
            color: white;
            text-decoration: none;
            margin: 0 0.5rem;
            opacity: 0.9;
            transition: opacity 0.3s ease;
        }

        footer a:hover {
            opacity: 1;
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .header-content {
                text-align: center;
            }

            .logo {
                font-size: 1.5rem;
            }

            h1 {
                font-size: 1.8rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.4rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 0.3rem;
            }

            .links-section {
                padding: 1.5rem;
            }

            .transition-section {
                padding: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            main {
                padding: 15px;
            }

            h1 {
                font-size: 1.5rem;
            }

            article {
                padding: 1rem;
            }

            .links-section {
                padding: 1rem;
            }

            .transition-section {
                padding: 1rem;
            }
        }