body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            color: #333;
            background-color: #1a1a2e;
        }
        header {
            background-color: #16213e;
            color: white;
            padding: 1rem;
            text-align: center;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .logo {
            font-size: 2rem;
            font-weight: bold;
            text-shadow: 2px 2px 4px #000;
        }
        nav {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background-color 0.3s;
        }
        nav a:hover {
            background-color: #0f3460;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 1rem;
        }
        section {
            margin-bottom: 3rem;
            background-color: #e94560;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        h1, h2, h3 {
            color: #0f3460;
        }
        h1 {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            margin-top: 2rem;
            border-bottom: 2px solid #0f3460;
            padding-bottom: 0.5rem;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 1.5rem;
        }
        .btn {
            display: inline-block;
            background-color: #0f3460;
            color: white;
            padding: 0.8rem 1.5rem;
            text-decoration: none;
            border-radius: 5px;
            margin: 0.5rem;
            transition: background-color 0.3s;
        }
        .btn:hover {
            background-color: #16213e;
        }
        .download-section, .login-section {
            text-align: center;
            margin: 2rem 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 1rem auto;
            border-radius: 8px;
        }
        .image-container {
            text-align: center;
            margin: 2rem 0;
        }
        footer {
            background-color: #16213e;
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 2rem;
        }
        .tags {
            margin: 1rem 0;
        }
        .tag {
            display: inline-block;
            background-color: #e94560;
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            margin: 0.2rem;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            nav {
                display: none;
                flex-direction: column;
                width: 100%;
            }
            nav.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
        }