body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            color: #333;
            background-color: #f4f4f4;
        }
        header {
            background-color: #1a1a2e;
            color: white;
            padding: 10px 0;
            text-align: center;
            position: relative;
        }
        .logo {
            font-size: 2em;
            font-weight: bold;
            margin: 0;
        }
        .logo span {
            color: #ff6b6b;
        }
        nav {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 10px;
        }
        nav a {
            color: white;
            margin: 0 15px;
            text-decoration: none;
            font-weight: bold;
        }
        .mobile-nav-toggle {
            display: none;
            position: absolute;
            top: 10px;
            right: 10px;
            background: none;
            border: none;
            color: white;
            font-size: 1.5em;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            nav {
                display: none;
                flex-direction: column;
                align-items: center;
                width: 100%;
            }
            nav.active {
                display: flex;
            }
            .mobile-nav-toggle {
                display: block;
            }
        }
        .container {
            max-width: 1200px;
            margin: 20px auto;
            padding: 0 20px;
            background-color: white;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
            border-radius: 5px;
        }
        h1, h2, h3 {
            color: #1a1a2e;
        }
        h1 {
            font-size: 2.5em;
            margin-bottom: 20px;
        }
        h2 {
            font-size: 2em;
            margin-top: 30px;
            border-bottom: 2px solid #ff6b6b;
            padding-bottom: 10px;
        }
        h3 {
            font-size: 1.5em;
            margin-top: 20px;
        }
        p {
            margin-bottom: 15px;
        }
        .button {
            display: inline-block;
            background-color: #ff6b6b;
            color: white;
            padding: 10px 20px;
            text-decoration: none;
            border-radius: 5px;
            margin: 10px 0;
            font-weight: bold;
        }
        .download-button {
            background-color: #4CAF50;
        }
        .login-button {
            background-color: #2196F3;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 20px auto;
            border-radius: 5px;
        }
        footer {
            background-color: #1a1a2e;
            color: white;
            text-align: center;
            padding: 20px 0;
            margin-top: 30px;
        }
        .tags {
            margin-top: 20px;
        }
        .tags a {
            color: #ff6b6b;
            text-decoration: none;
            margin: 0 5px;
        }