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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f8f9fa;
        }

        header {
            background: linear-gradient(135deg, #2f5c87 0%, #1d4468 100%);
            color: #fff;
            padding: 1.5rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        nav {
            background: #fff;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        }

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

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            padding: 0;
        }

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            padding: 1rem 1.5rem;
            color: #2f5c87;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        nav ul li a:hover {
            background: #f8f9fa;
            color: #1d4468;
        }

        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: #2f5c87;
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }

        nav ul li a:hover::after {
            width: 80%;
        }

        main {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 20px;
        }

        h1 {
            font-size: 2.5rem;
            color: #1d4468;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid #2f5c87;
            font-weight: 700;
        }

        article {
            background: #fff;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        article h2 {
            color: #2f5c87;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
            font-weight: 600;
        }

        article h3 {
            color: #1d4468;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
            font-size: 1.4rem;
            font-weight: 600;
        }

        article h4 {
            color: #2f5c87;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
            font-size: 1.2rem;
            font-weight: 600;
        }

        article p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }

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

        .transition-section p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 1rem;
        }

        .links-section {
            background: #fff;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .links-section h2 {
            color: #1d4468;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            font-weight: 600;
        }

        .links-section h3 {
            color: #2f5c87;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.5rem;
            font-weight: 600;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.8rem 2rem;
            margin-bottom: 2rem;
        }

        .links-section ul li {
            padding: 0;
        }

        .links-section ul li a {
            color: #2f5c87;
            text-decoration: none;
            font-size: 1rem;
            display: inline-block;
            padding: 0.5rem 0;
            transition: all 0.3s ease;
            position: relative;
            padding-left: 1.5rem;
        }

        .links-section ul li a::before {
            content: '→';
            position: absolute;
            left: 0;
            transition: all 0.3s ease;
        }

        .links-section ul li a:hover {
            color: #1d4468;
            padding-left: 2rem;
        }

        .links-section ul li a:hover::before {
            left: 0.5rem;
        }

        footer {
            background: linear-gradient(135deg, #1d4468 0%, #2f5c87 100%);
            color: #fff;
            padding: 2rem 0;
            margin-top: 4rem;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            text-align: center;
        }

        footer p {
            margin: 0.5rem 0;
            opacity: 0.9;
        }

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

            nav ul {
                flex-direction: column;
            }

            nav ul li a {
                padding: 0.8rem 1rem;
            }

            h1 {
                font-size: 2rem;
            }

            article {
                padding: 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

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

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

        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }

            article {
                padding: 1rem;
            }

            article p {
                font-size: 1rem;
            }

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