body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            background-color: #f5f5f5;
        }
        header {
            background-color: #ff4757;
            color: white;
            padding: 20px;
            position: relative;
        }
        .logo {
            font-size: 28px;
            font-weight: bold;
            display: inline-block;
        }
        nav {
            display: inline-block;
            margin-left: 30px;
        }
        nav a {
            color: white;
            text-decoration: none;
            margin: 0 10px;
        }
        .mobile-menu {
            display: none;
            position: absolute;
            right: 20px;
            top: 20px;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            nav {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #ff4757;
                padding: 10px;
                box-sizing: border-box;
            }
            nav.active {
                display: block;
            }
            .mobile-menu {
                display: block;
            }
        }
        h1 {
            color: #ff4757;
            margin-top: 30px;
        }
        h2 {
            color: #2f3542;
            border-bottom: 2px solid #ff4757;
            padding-bottom: 5px;
        }
        h3 {
            color: #57606f;
        }
        .download-btn {
            display: inline-block;
            background-color: #2ed573;
            color: white;
            padding: 12px 25px;
            margin: 15px 0;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
        }
        .login-btn {
            display: inline-block;
            background-color: #1e90ff;
            color: white;
            padding: 12px 25px;
            margin: 15px 0;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
        }
        .image-container {
            text-align: center;
            margin: 20px 0;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .table-container {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
        }
        th, td {
            border: 1px solid #ddd;
            padding: 8px;
            text-align: left;
        }
        th {
            background-color: #f2f2f2;
        }
        footer {
            background-color: #2f3542;
            color: white;
            padding: 20px;
            margin-top: 30px;
            text-align: center;
        }
        .tag-container {
            margin: 20px 0;
        }
        .tag {
            display: inline-block;
            background-color: #57606f;
            color: white;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 3px;
            text-decoration: none;
        }