* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
            color: white;
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            background: linear-gradient(45deg, #fbbf24, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo span {
            font-size: 1.5rem;
            color: #fbbf24;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 25px;
            transition: all 0.3s ease;
        }
        nav a:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .hero {
            background: linear-gradient(135deg, rgba(30,58,138,0.9) 0%, rgba(59,130,246,0.8) 100%);
            color: white;
            padding: 100px 0;
            text-align: center;
            margin-bottom: 50px;
            border-radius: 15px;
            margin-top: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 3px 3px 6px rgba(0,0,0,0.3);
            background: linear-gradient(45deg, #fbbf24, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .btn {
            padding: 15px 30px;
            border: none;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
        .btn-primary {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: white;
            box-shadow: 0 4px 15px rgba(245,158,11,0.4);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(245,158,11,0.6);
        }
        .btn-secondary {
            background: linear-gradient(135deg, #6366f1, #4f46e5);
            color: white;
            box-shadow: 0 4px 15px rgba(99,102,241,0.4);
        }
        .btn-secondary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(99,102,241,0.6);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            margin-bottom: 60px;
        }
        .section {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        .section:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 35px rgba(0,0,0,0.15);
        }
        .section-title {
            font-size: 2.2rem;
            color: #1e3a8a;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #f59e0b;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.6rem;
            color: #3b82f6;
            margin: 25px 0 15px;
        }
        .content-text {
            font-size: 1.1rem;
            margin-bottom: 20px;
            text-align: justify;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        .feature-card {
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            padding: 25px;
            border-radius: 12px;
            border-left: 5px solid #f59e0b;
            transition: all 0.3s ease;
        }
        .feature-card:hover {
            transform: translateX(5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .feature-card h4 {
            color: #1e3a8a;
            margin-bottom: 15px;
            font-size: 1.3rem;
        }
        .image-container {
            text-align: center;
            margin: 30px 0;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }
        .rating-stars {
            color: #fbbf24;
            font-size: 1.5rem;
            margin: 10px 0;
        }
        .download-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
            text-align: center;
        }
        .stat-box {
            background: linear-gradient(135deg, #10b981 0%, #059669 100%);
            color: white;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(16,185,129,0.3);
        }
        .stat-box h3 {
            font-size: 2rem;
            margin-bottom: 5px;
        }
        .stat-box p {
            font-size: 1rem;
            opacity: 0.9;
        }
        .tabs {
            margin: 30px 0;
        }
        .tab-buttons {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .tab-btn {
            padding: 12px 24px;
            background: #e2e8f0;
            border: none;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .tab-btn.active {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: white;
        }
        .tab-content {
            display: none;
            padding: 25px;
            background: #f8fafc;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
        }
        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        .faq-item {
            margin-bottom: 20px;
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            overflow: hidden;
        }
        .faq-question {
            padding: 15px 20px;
            background: #f8fafc;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
        }
        .faq-question:hover {
            background: #e2e8f0;
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-answer.active {
            padding: 20px;
            max-height: 500px;
        }
        footer {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: white;
            padding: 80px 0 40px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-column h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: #fbbf24;
        }
        .footer-column ul {
            list-style: none;
        }
        .footer-column li {
            margin-bottom: 12px;
        }
        .footer-column a {
            color: #d1d5db;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .footer-column a:hover {
            color: #fbbf24;
            padding-left: 5px;
        }
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .tag {
            padding: 8px 16px;
            background: rgba(251,191,36,0.1);
            color: #fbbf24;
            border-radius: 20px;
            font-size: 0.9rem;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .tag:hover {
            background: rgba(251,191,36,0.2);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #9ca3af;
        }
        .recommendation {
            background: linear-gradient(135deg, rgba(251,191,36,0.1) 0%, rgba(245,158,11,0.1) 100%);
            border-left: 4px solid #fbbf24;
            padding: 20px;
            border-radius: 8px;
            margin: 20px 0;
            text-align: center;
        }
        .recommendation p {
            font-size: 1.1rem;
            color: #78350f;
            font-weight: 600;
        }
        @media (max-width: 992px) {
            .logo {
                font-size: 1.8rem;
            }
            nav ul {
                gap: 15px;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #1e3a8a;
                padding: 20px;
                gap: 15px;
            }
            nav ul.active {
                display: flex;
            }
            .hero {
                padding: 60px 0;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            .section {
                padding: 25px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .content-text {
                font-size: 1rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }