* {
            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: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            background: #fff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.1);
        }

        header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            padding: 2rem 0;
            position: relative;
            overflow: hidden;
        }

        header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,101.3C1248,85,1344,75,1392,69.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
            background-size: cover;
            opacity: 0.3;
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 1;
        }

        nav {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0;
        }

        nav ul li {
            margin: 0;
        }

        nav ul li a {
            display: block;
            padding: 1rem 1.5rem;
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        nav ul li a:hover {
            background: #f8f9fa;
            border-bottom-color: #667eea;
            color: #764ba2;
        }

        main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 2rem;
        }

        h1 {
            font-size: 2.5rem;
            color: #2c3e50;
            margin-bottom: 2rem;
            text-align: center;
            position: relative;
            padding-bottom: 1rem;
        }

        h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            border-radius: 2px;
        }

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

        article h2 {
            color: #667eea;
            margin-top: 2rem;
            margin-bottom: 1rem;
            font-size: 1.8rem;
        }

        article h3 {
            color: #764ba2;
            margin-top: 1.5rem;
            margin-bottom: 0.8rem;
            font-size: 1.4rem;
        }

        article h4 {
            color: #555;
            margin-top: 1.2rem;
            margin-bottom: 0.6rem;
            font-size: 1.2rem;
        }

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

        article strong {
            color: #333;
        }

        article em {
            color: #667eea;
        }

        .transition-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #e9ecef 100%);
            padding: 2rem;
            margin-bottom: 3rem;
            border-radius: 8px;
            border-left: 4px solid #667eea;
        }

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

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

        .links-section h3 {
            color: #667eea;
            margin-bottom: 1.5rem;
            font-size: 1.6rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin-bottom: 2.5rem;
        }

        .links-section ul:last-child {
            margin-bottom: 0;
        }

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

        .links-section ul li a {
            display: block;
            padding: 0.8rem 1rem;
            color: #555;
            text-decoration: none;
            background: #f8f9fa;
            border-radius: 6px;
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
        }

        .links-section ul li a:hover {
            background: #e9ecef;
            border-left-color: #667eea;
            color: #667eea;
            transform: translateX(5px);
        }

        footer {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: #ecf0f1;
            padding: 2rem;
            text-align: center;
        }

        footer p {
            margin: 0.5rem 0;
            font-size: 0.95rem;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        @media (max-width: 968px) {
            .links-section ul {
                grid-template-columns: 1fr;
            }

            nav ul {
                flex-direction: column;
            }

            nav ul li {
                width: 100%;
                text-align: center;
            }

            nav ul li a {
                border-bottom: 1px solid #e9ecef;
            }

            h1 {
                font-size: 2rem;
            }

            main {
                padding: 2rem 1rem;
            }

            article {
                padding: 1.5rem;
            }

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

        @media (max-width: 600px) {
            h1 {
                font-size: 1.6rem;
            }

            article h2 {
                font-size: 1.4rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

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