* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #F9F9F9;
            color: #333333;
            line-height: 1.8;
            padding-bottom: 50px;
        }
        header {
            background-color: #FF6B00;
            padding: 15px 30px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: white;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .logo span {
            color: #1E88E5;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s ease;
        }
        nav a:hover {
            color: #1E88E5;
        }
        .hamburger {
            display: none;
            font-size: 28px;
            color: white;
            cursor: pointer;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 16px;
            text-align: center;
        }
        .btn-download {
            background-color: #4CAF50;
            color: white;
            margin-right: 15px;
        }
        .btn-download:hover {
            background-color: #388E3C;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
        }
        .btn-login {
            background-color: #1E88E5;
            color: white;
        }
        .btn-login:hover {
            background-color: #1565C0;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(30, 136, 229, 0.3);
        }
        .btn-container {
            margin: 40px 0;
            text-align: center;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 30px;
        }
        h1 {
            font-size: 42px;
            color: #FF6B00;
            text-align: center;
            margin: 50px 0 30px;
            line-height: 1.4;
        }
        h2 {
            font-size: 32px;
            color: #1E88E5;
            margin: 60px 0 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #FF6B00;
        }
        h3 {
            font-size: 24px;
            color: #333333;
            margin: 40px 0 20px;
        }
        p {
            margin-bottom: 25px;
            font-size: 18px;
            text-align: justify;
        }
        strong {
            color: #FF6B00;
        }
        .intro-image {
            width: 100%;
            height: auto;
            border-radius: 15px;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        .feature-card {
            background-color: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
        }
        .feature-card h3 {
            color: #FF6B00;
            margin-bottom: 15px;
        }
        .feature-card p {
            font-size: 17px;
        }
        .feature-card emoji {
            font-size: 36px;
            margin-bottom: 15px;
            display: block;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid #1E88E5;
            padding-left: 20px;
            margin: 40px 0;
            color: #555;
            font-size: 19px;
        }
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }
        .review-card {
            background-color: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .reviewer {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        .reviewer-img {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 15px;
            object-fit: cover;
        }
        .reviewer-name {
            font-weight: 600;
            color: #333;
        }
        .reviewer-location {
            font-size: 14px;
            color: #777;
        }
        .rating {
            color: #FFD700;
            margin-bottom: 10px;
            font-size: 20px;
        }
        footer {
            background-color: #333;
            color: white;
            padding: 60px 30px 30px;
            margin-top: 80px;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        .footer-section h3 {
            color: #FF6B00;
            margin-bottom: 25px;
            font-size: 22px;
            border-bottom: 1px solid #555;
            padding-bottom: 10px;
        }
        .footer-section ul {
            list-style: none;
        }
        .footer-section li {
            margin-bottom: 15px;
        }
        .footer-section a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 17px;
        }
        .footer-section a:hover {
            color: #FF6B00;
        }
        .recommendation {
            background-color: #444;
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            text-align: center;
        }
        .recommendation h3 {
            color: #FF6B00;
            margin-bottom: 15px;
            font-size: 24px;
        }
        .recommendation p {
            color: #eee;
            font-size: 18px;
            margin-bottom: 0;
        }
        .copyright {
            text-align: center;
            margin-top: 50px;
            padding-top: 20px;
            border-top: 1px solid #555;
            font-size: 16px;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            nav ul {
                flex-direction: column;
                gap: 15px;
                margin-top: 20px;
                display: none;
                width: 100%;
            }
            nav ul.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 20px;
                right: 30px;
            }
            h1 {
                font-size: 32px;
                margin: 30px 0 20px;
            }
            h2 {
                font-size: 26px;
                margin: 40px 0 20px;
            }
            h3 {
                font-size: 20px;
                margin: 30px 0 15px;
            }
            p {
                font-size: 17px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 15px;
                width: 100%;
                margin-bottom: 15px;
            }
            .btn-download {
                margin-right: 0;
            }
            .feature-grid, .review-grid {
                gap: 20px;
            }
            .footer-container {
                gap: 30px;
            }
        }