body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
        }
        header {
            background-color: #ff4757;
            color: white;
            padding: 20px;
            text-align: center;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .logo {
            font-size: 2.5em;
            font-weight: bold;
            margin-bottom: 10px;
        }
        nav {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 20px;
        }
        nav a {
            color: white;
            text-decoration: none;
            padding: 8px 15px;
            background-color: rgba(255,255,255,0.2);
            border-radius: 5px;
            transition: all 0.3s;
        }
        nav a:hover {
            background-color: rgba(255,255,255,0.4);
        }
        .mobile-nav-toggle {
            display: none;
            background-color: white;
            color: #ff4757;
            border: none;
            padding: 10px 15px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.2em;
            margin-bottom: 15px;
        }
        h1 {
            color: #ff4757;
            font-size: 2.2em;
            margin-bottom: 20px;
            border-bottom: 2px solid #ff4757;
            padding-bottom: 10px;
        }
        h2 {
            color: #2ed573;
            font-size: 1.8em;
            margin: 30px 0 15px;
        }
        h3 {
            color: #5352ed;
            font-size: 1.4em;
            margin: 25px 0 10px;
        }
        .download-btn, .login-btn {
            display: inline-block;
            background-color: #2ed573;
            color: white;
            padding: 12px 25px;
            text-decoration: none;
            border-radius: 5px;
            font-weight: bold;
            margin: 15px 0;
            transition: all 0.3s;
        }
        .download-btn:hover, .login-btn:hover {
            background-color: #20bf6b;
            transform: translateY(-2px);
        }
        .login-btn {
            background-color: #5352ed;
        }
        .login-btn:hover {
            background-color: #3a39e0;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .table-container {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        th, td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        th {
            background-color: #ff4757;
            color: white;
        }
        tr:hover {
            background-color: #f9f9f9;
        }
        .tags {
            margin: 30px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag {
            background-color: #e1e1e1;
            padding: 5px 10px;
            border-radius: 20px;
            text-decoration: none;
            color: #333;
            font-size: 0.9em;
        }
        .tag:hover {
            background-color: #d1d1d1;
        }
        footer {
            margin-top: 50px;
            padding: 30px 0;
            border-top: 1px solid #ddd;
            text-align: center;
            color: #666;
        }
        @media (max-width: 768px) {
            .mobile-nav-toggle {
                display: block;
            }
            nav {
                display: none;
                flex-direction: column;
                align-items: center;
            }
            nav.active {
                display: flex;
            }
            h1 {
                font-size: 1.8em;
            }
            h2 {
                font-size: 1.5em;
            }
            h3 {
                font-size: 1.2em;
            }
        }