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

        body {
            font-family: Arial, sans-serif;
            font-size: 14px;
            color: #3399ff;
            background-color: #99FFFF;
            line-height: 1.5;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background-color: #ffffff;
        }

        .header {
            background-color: #000000;
            padding: 0;
        }

        .nav-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }

        .nav-bar a {
            display: block;
            width: 100px;
            height: 20px;
            background-color: #666;
            color: white;
            text-decoration: none;
            text-align: center;
            line-height: 20px;
            font-size: 10px;
            border-right: 1px solid #333;
        }

        .nav-bar a:hover {
            background-color: #999;
        }

        .main-header {
            background-color: #99FFFF;
            border: 4px solid #0080FF;
            padding: 20px;
        }

        .main-header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .logo-section {
            flex: 1;
            min-width: 200px;
        }

        .center-section {
            flex: 2;
            text-align: center;
            padding: 0 20px;
        }

        .contact-section {
            flex: 1;
            text-align: right;
            min-width: 200px;
        }

        .site-title {
            color: #0080FF;
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .site-description {
            color: #0080FF;
            font-size: 16px;
            font-weight: bold;
        }

        .site-description a {
            color: #0080FF;
            text-decoration: none;
        }

        .content-wrapper {
            background-color: #99FFFF;
            padding: 20px;
            border-left: 25px solid transparent;
            border-image: linear-gradient(to bottom, #3399FF, #3399FF) 1;
        }

        h1 {
            color: #ff0000;
            font-size: 28px;
            text-align: center;
            margin-bottom: 20px;
            font-weight: bold;
        }

        article {
            background-color: #ffffff;
            padding: 30px;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        article h2 {
            color: #ff0000;
            font-size: 20px;
            margin: 20px 0 15px 0;
            font-weight: bold;
        }

        article p {
            color: #333;
            margin-bottom: 15px;
            line-height: 1.6;
        }

        .transition-section {
            background-color: #ffffff;
            padding: 20px;
            margin: 20px 0;
            border-radius: 8px;
            color: #333;
        }

        .links-section {
            background-color: #ffffff;
            padding: 20px;
            margin: 20px 0;
            border-radius: 8px;
        }

        .links-section h3 {
            color: #0080FF;
            font-size: 18px;
            margin-bottom: 15px;
            font-weight: bold;
            border-bottom: 2px solid #0080FF;
            padding-bottom: 5px;
        }

        .links-section ul {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 10px 20px;
            list-style: none;
            margin-bottom: 25px;
        }

        .links-section li {
            margin-bottom: 8px;
        }

        .links-section a {
            color: #3399ff;
            text-decoration: none;
            font-weight: bold;
            font-size: 13px;
            display: block;
            padding: 5px 0;
            border-bottom: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .links-section a:hover {
            color: #FF0000;
            border-bottom-color: #FF0000;
        }

        .footer {
            background-color: #0080FF;
            color: white;
            padding: 20px 0;
        }

        .footer-nav {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 10px;
            text-align: center;
            margin-bottom: 20px;
        }

        .footer-nav a {
            color: white;
            text-decoration: none;
            font-size: 12px;
            padding: 10px;
            display: block;
        }

        .footer-nav a:hover {
            background-color: rgba(255,255,255,0.1);
        }

        .footer-copyright {
            text-align: center;
            font-size: 11px;
            border-top: 1px solid rgba(255,255,255,0.3);
            padding-top: 15px;
        }

        @media (max-width: 768px) {
            .nav-bar {
                flex-direction: column;
            }
            
            .nav-bar a {
                width: 100%;
                border-right: none;
                border-bottom: 1px solid #333;
            }

            .main-header-content {
                flex-direction: column;
                text-align: center;
            }

            .center-section,
            .contact-section {
                margin-top: 20px;
            }

            .site-title {
                font-size: 20px;
            }

            .site-description {
                font-size: 14px;
            }

            .content-wrapper {
                border-left: none;
                padding: 10px;
            }

            article {
                padding: 20px;
            }

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

            .footer-nav {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .footer-nav {
                grid-template-columns: 1fr;
            }
            
            .site-title {
                font-size: 18px;
            }
            
            h1 {
                font-size: 24px;
            }
        }