:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --secondary: #475569;
            --secondary-light: #94a3b8;
            --accent: #0ea5e9;
            --light: #f8fafc;
            --lighter: #ffffff;
            --dark: #1e293b;
            --darker: #0f172a;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --gradient: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
            --gradient-light: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12);
            --radius: 12px;
            --radius-sm: 8px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* Reset and Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background-color: var(--lighter);
            overflow-x: hidden;
            font-size: 16px;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: var(--darker);
        }

        p {
            margin-bottom: 1.5rem;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }

        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Skip to Main Content for Accessibility */
        .skip-to-content {
            position: absolute;
            top: -40px;
            left: 0;
            background: var(--primary);
            color: white;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            z-index: 9999;
            text-decoration: none;
        }

        .skip-to-content:focus {
            top: 10px;
        }

        /* Header & Navigation */
        header {
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 16px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
        }

        .logo a {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-img {
            height: 40px;
            width: auto;
            max-height: 40px;
        }

        .logo-text {
            font-size: 1.75rem;
        }

        /* Desktop Navigation */
        .desktop-nav {
            display: flex;
        }

        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 32px;
            margin: 0;
        }

        .desktop-nav a {
            text-decoration: none;
            color: var(--secondary);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
            padding: 8px 0;
        }

        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--primary);
        }

        .desktop-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--gradient);
            border-radius: 3px;
        }

        /* Mobile Navigation */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            justify-content: center;
            align-items: center;
            transition: var(--transition);
        }

        .mobile-menu-btn:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 300px;
            height: 100vh;
            background: var(--lighter);
            box-shadow: var(--shadow-xl);
            z-index: 9999;
            padding: 30px 25px;
            transform: translateX(100%);
            transition: transform 0.3s ease-in-out;
            overflow-y: auto;
        }

        .mobile-nav.active {
            transform: translateX(0);
        }

        .mobile-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
        }

        .mobile-nav-close {
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            justify-content: center;
            align-items: center;
            transition: var(--transition);
        }

        .mobile-nav-close:hover {
            background-color: rgba(0, 0, 0, 0.05);
        }

        .mobile-nav ul {
            list-style: none;
        }

        .mobile-nav li {
            margin-bottom: 20px;
        }

        .mobile-nav a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            font-size: 1.2rem;
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--primary);
            background-color: rgba(37, 99, 235, 0.05);
        }

        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 9998;
            backdrop-filter: blur(3px);
        }

        .overlay.active {
            display: block;
        }

        /* Hero Section */
        .hero {
            background: var(--gradient-light);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
            z-index: 0;
        }

        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
            position: relative;
            z-index: 1;
        }

        .hero-text {
            flex: 1;
        }

        .hero-subtitle {
            display: inline-block;
            color: var(--primary);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            background: rgba(37, 99, 235, 0.1);
            padding: 8px 16px;
            border-radius: 30px;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--darker);
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--secondary);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.7;
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-image img {
            max-width: 100%;
            height: auto;
            filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.1));
            transform: perspective(1000px) rotateY(-10deg);
            transition: var(--transition-slow);
            border-radius: 30px;
        }

        .hero-image img:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .cta-button {
            display: inline-block;
            background: var(--gradient);
            color: white;
            padding: 18px 36px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1.125rem;
            text-decoration: none;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow);
            text-align: center;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            color: white;
        }

        .download-buttons {
            display: flex;
            gap: 20px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: white;
            color: var(--dark);
            padding: 16px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            color: var(--dark);
        }

        .download-btn i {
            font-size: 1.5rem;
        }

        .download-btn.apk {
            background: var(--primary);
            color: white;
        }

        /* Sections Common */
        section {
            padding: 100px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--darker);
            margin-bottom: 16px;
        }

        .section-title p {
            font-size: 1.25rem;
            color: var(--secondary);
            max-width: 700px;
            margin: 0 auto;
        }

        /* Steps Section */
        .steps-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            gap: 30px;
            background: var(--lighter);
            padding: 40px;
            border-radius: var(--radius);
            margin-bottom: 30px;
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .step-number {
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            background: var(--gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.75rem;
            box-shadow: var(--shadow);
        }

        .step-content {
            flex: 1;
        }

        .step-content h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--darker);
        }

        .step-content p {
            color: var(--secondary);
            line-height: 1.7;
            font-size: 1.1rem;
        }

        .step-content a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
            border-bottom: 2px solid transparent;
        }

        .step-content a:hover {
            border-bottom: 2px solid var(--primary);
        }

        /* Features Section */
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 50px;
        }

        .feature-card {
            background: var(--lighter);
            padding: 50px 30px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: var(--gradient-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 30px;
            box-shadow: var(--shadow);
        }

        .feature-icon i {
            font-size: 2.5rem;
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--darker);
        }

        .feature-card p {
            color: var(--secondary);
            line-height: 1.7;
        }

        /* Call to Action */
        .cta-section {
            background: var(--gradient);
            color: white;
            text-align: center;
            padding: 120px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: white;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 0 auto 50px;
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 24px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .cta-button.light {
            background: white;
            color: var(--primary);
        }

        .cta-button.outline {
            background: transparent;
            border: 2px solid white;
        }

        .cta-button.outline:hover {
            background: white;
            color: var(--primary);
        }

        /* Social Share */
        .social-share {
            background: var(--light);
            padding: 80px 0;
            text-align: center;
        }

        .social-share h3 {
            font-size: 1.1rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--secondary);
            margin-bottom: 40px;
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 30px;
        }

        .social-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.5rem;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .social-icon:hover {
            transform: translateY(-5px);
            color: white;
        }

        .social-icon.facebook:hover {
            background: #1877F2;
        }

        .social-icon.twitter:hover {
            background: #1DA1F2;
        }

        .social-icon.google:hover {
            background: #DB4437;
        }

        /* Footer */
        footer {
            background: var(--darker);
            color: white;
            padding: 80px 0 40px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 60px;
        }

        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
        }

        .footer-links {
            display: flex;
            gap: 30px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }

        .footer-links a:hover {
            color: white;
        }

        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .github-link {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .github-link:hover {
            color: white;
        }

        /* Animations */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .fade-in {
            opacity: 0;
            animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
        }

        .delay-1 { animation-delay: 0.2s; }
        .delay-2 { animation-delay: 0.4s; }
        .delay-3 { animation-delay: 0.6s; }
        .delay-4 { animation-delay: 0.8s; }

        /* Responsive Styles */
        @media (max-width: 1100px) {
            .hero h1 {
                font-size: 3rem;
            }

            .section-title h2 {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
                gap: 50px;
            }

            .hero h1 {
                font-size: 2.8rem;
            }

            .hero p {
                margin: 0 auto 40px;
            }

            .hero-image img {
                max-width: 80%;
            }

            .desktop-nav {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .mobile-nav {
                display: block;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 80px 0;
            }

            .hero {
                padding: 80px 0;
            }

            .hero h1 {
                font-size: 2.4rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .section-title h2 {
                font-size: 2.2rem;
            }

            .section-title p {
                font-size: 1.1rem;
            }

            .step-item {
                flex-direction: column;
                text-align: center;
                gap: 20px;
                padding: 30px;
            }

            .step-number {
                width: 50px;
                height: 50px;
                font-size: 1.5rem;
                margin: 0 auto;
            }

            .step-content h3 {
                font-size: 1.5rem;
            }

            .download-buttons, .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .download-btn, .cta-button {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }

            .footer-content {
                flex-direction: column;
                text-align: center;
            }

            .footer-links {
                flex-direction: column;
                gap: 15px;
            }

            .cta-section h2 {
                font-size: 2.4rem;
            }

            .cta-section p {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 576px) {
            .hero {
                padding: 60px 0;
            }

            section {
                padding: 60px 0;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .section-title h2 {
                font-size: 1.8rem;
            }

            .section-title p {
                font-size: 1rem;
            }

            .step-item {
                padding: 25px;
            }

            .feature-card {
                padding: 40px 25px;
            }

            .cta-section {
                padding: 80px 0;
            }

            .cta-section h2 {
                font-size: 2rem;
            }

            .cta-section p {
                font-size: 1rem;
            }

            .mobile-nav {
                width: 100%;
            }

            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 400px) {
            .hero h1 {
                font-size: 1.8rem;
            }

            .logo-text {
                font-size: 1.5rem;
            }

            .social-icons {
                gap: 20px;
            }

            .social-icon {
                width: 50px;
                height: 50px;
                font-size: 1.3rem;
            }
        }

        /* Print Styles */
        @media print {
            .mobile-menu-btn,
            .mobile-nav,
            .social-share,
            .cta-buttons,
            .download-buttons {
                display: none;
            }

            body {
                font-size: 12pt;
                line-height: 1.5;
            }

            .container {
                max-width: 100%;
            }

            section {
                padding: 40px 0;
            }
        }