body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            color: #333;
            background-color: #f9f9f9;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        header {
            background-color: #1a5276;
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #ffd700;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        nav ul {
            list-style: none;
            display: flex;
            gap: 20px;
        }
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        h1 {
            color: #1a5276;
            margin-top: 30px;
            margin-bottom: 20px;
            font-size: 32px;
        }
        h2 {
            color: #2874a6;
            margin-top: 25px;
            margin-bottom: 15px;
            font-size: 26px;
        }
        h3 {
            color: #3498db;
            margin-top: 20px;
            margin-bottom: 10px;
            font-size: 22px;
        }
        p {
            margin-bottom: 15px;
        }
        .download-btn, .login-btn {
            display: inline-block;
            background-color: #27ae60;
            color: white;
            padding: 12px 25px;
            text-decoration: none;
            border-radius: 5px;
            font-weight: bold;
            margin: 10px 5px 10px 0;
            transition: background-color 0.3s;
        }
        .download-btn:hover, .login-btn:hover {
            background-color: #219653;
        }
        .image-container {
            text-align: center;
            margin: 25px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        .table-container {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background-color: white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
        th, td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        th {
            background-color: #1a5276;
            color: white;
        }
        tr:nth-child(even) {
            background-color: #f2f2f2;
        }
        .community-section {
            background-color: #e8f4fc;
            padding: 20px;
            border-radius: 8px;
            margin: 30px 0;
        }
        .tags {
            margin: 20px 0;
        }
        .tag {
            display: inline-block;
            background-color: #3498db;
            color: white;
            padding: 5px 10px;
            border-radius: 20px;
            margin-right: 8px;
            margin-bottom: 8px;
            text-decoration: none;
        }
        footer {
            background-color: #1a5276;
            color: white;
            text-align: center;
            padding: 20px 0;
            margin-top: 30px;
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
            }
            nav {
                display: none;
                width: 100%;
                margin-top: 15px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 10px;
            }
            .mobile-menu-btn {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 24px;
            }
            h3 {
                font-size: 20px;
            }
        }