/* ===============================================
           Variables & Reset
           =============================================== */
        :root {
            --primary: #28a745;
            --primary-light: #34ce57;
            --primary-dark: #218838;
            
            --secondary: #6c757d;
            --secondary-light: #868e96;
            --secondary-dark: #5a6268;
            
            --text-primary: #0F172A;
            --text-secondary: #475569;
            --text-tertiary: #94A3B8;
            
            --bg-white: #FFFFFF;
            --bg-light: #F8F9FA;
            --bg-lighter: #F1F5F9;
            
            --border-light: rgba(0, 0, 0, 0.125);
            --border-green: rgba(40, 167, 69, 0.2);
            
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            
            --font-body: 'DM Sans', sans-serif;
            --font-display: 'Sora', sans-serif;
            
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: var(--font-body);
            color: var(--text-primary);
            line-height: 1.6;
            background: var(--bg-white);
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        img {
            max-width: 100%;
            display: block;
        }
        
        /* ===============================================
           Container & Utilities
           =============================================== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .section {
            padding: 80px 0;
        }
        
        .section-light {
            background: var(--bg-light);
        }
        
        /* ===============================================
           Hero Section
           =============================================== */
        .hero-section {
            padding: 60px 0;
            background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(240,250,244,1) 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-section h1 {
            font-family: var(--font-display);
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        
        .hero-section h2 {
            font-size: 1.5rem;
            color: var(--text-secondary);
            font-weight: 400;
            margin-bottom: 20px;
        }
        
        .hero-section .lead {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        
        /* ===============================================
           Download Cards
           =============================================== */
        .download-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-bottom: 40px;
        }
        
        .download-card {
            background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
            border: 2px solid var(--border-green);
            border-radius: 12px;
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        
        .download-card::before {
            content: '';
            position: absolute;
            top: -50px;
            left: -50px;
            width: 100px;
            height: 100px;
            background: radial-gradient(circle, rgba(40, 167, 69, 0.1) 0%, transparent 70%);
            transition: all var(--transition-slow);
            transform: scale(0);
        }
        
        .download-card:hover::before {
            transform: scale(1);
        }
        
        .download-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }
        
        .download-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition-normal);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }
        
        .download-card:hover .download-icon {
            transform: scale(1.2) rotate(360deg);
            animation: none;
        }
        
        .download-card h4 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .download-card .text-muted {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        
        .hero-section .btn,
        .section .btn,
        .nav-buttons .btn {
            display: inline-block;
            padding: 12px 32px;
            font-weight: 600;
            border-radius: 8px;
            transition: all var(--transition-normal);
            cursor: pointer;
            border: none;
            font-size: 1rem;
            text-align: center;
        }
        
        .hero-section .btn-primary,
        .section .btn-primary,
        .nav-buttons .btn-primary {
            background: var(--primary);
            color: white;
            box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
        }
        
        .hero-section .btn-primary:hover,
        .section .btn-primary:hover,
        .nav-buttons .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
            transform: translateY(-2px);
        }
        
        .hero-section .btn-block,
        .section .btn-block {
            width: 100%;
            display: block;
        }
        
        .download-info {
            margin-top: 12px;
            text-align: left;
        }
        
        .download-info small {
            color: var(--text-tertiary);
            font-size: 0.875rem;
            display: block;
            margin-bottom: 4px;
        }
        
        /* ===============================================
           Hero Image Container
           =============================================== */
        .hero-image-container {
            position: relative;
            text-align: center;
        }
        
        .hero-image-container img {
            max-height: 400px;
            border-radius: 16px;
            box-shadow: var(--shadow-lg);
            animation: float 6s ease-in-out infinite;
            border: 10px solid white;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-15px); }
        }
        
        .floating-badge {
            position: absolute;
            background: var(--primary);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: var(--shadow-md);
            animation: pulsate 3s infinite;
        }
        
        @keyframes pulsate {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.1); opacity: 0.9; }
        }
        
        .badge-tl { top: -10px; left: 30px; animation-delay: 0s; }
        .badge-tr { top: 20px; right: 20px; animation-delay: 0.75s; }
        .badge-bl { bottom: 30px; left: 25px; animation-delay: 1.5s; }
        .badge-br { bottom: 10px; right: 40px; animation-delay: 2.25s; }
        
        /* ===============================================
           Navigation Buttons
           =============================================== */
        .nav-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        
        .hero-section .btn-outline-primary,
        .section .btn-outline-primary,
        .nav-buttons .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 12px 32px;
            font-weight: 600;
        }
        
        .hero-section .btn-outline-primary:hover,
        .section .btn-outline-primary:hover,
        .nav-buttons .btn-outline-primary:hover {
            background: var(--primary);
            color: white;
        }
        
        .hero-section .btn-outline-secondary,
        .section .btn-outline-secondary,
        .nav-buttons .btn-outline-secondary {
            background: transparent;
            color: var(--secondary);
            border: 2px solid var(--secondary);
            padding: 12px 32px;
            font-weight: 600;
        }
        
        .hero-section .btn-outline-secondary:hover,
        .section .btn-outline-secondary:hover,
        .nav-buttons .btn-outline-secondary:hover {
            background: var(--secondary);
            color: white;
        }
        
        .hero-section .btn-success,
        .section .btn-success {
            background: #28a745;
            color: white;
            box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
        }
        
        .hero-section .btn-info,
        .section .btn-info {
            background: #17a2b8;
            color: white;
            box-shadow: 0 4px 12px rgba(23, 162, 184, 0.3);
        }
        
        /* ===============================================
           Section Titles
           =============================================== */
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title {
            font-family: var(--font-display);
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
            padding-bottom: 16px;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        
        .section-subtitle {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-top: 16px;
        }
        
        /* ===============================================
           Step Cards
           =============================================== */
        .steps-container {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .step-item {
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        
        .step-header {
            display: flex;
            align-items: center;
            padding: 24px 32px;
            cursor: pointer;
            border-left: 5px solid;
            gap: 24px;
        }
        
        .step-item.step-download .step-header { border-left-color: #007bff; }
        .step-item.step-installation .step-header { border-left-color: #ffc107; }
        .step-item.step-activation .step-header { border-left-color: #28a745; }
        .step-item.step-registration .step-header { border-left-color: #17a2b8; }
        .step-item.step-trunk .step-header { border-left-color: #dc3545; }
        .step-item.step-assistant .step-header { border-left-color: #343a40; }
        .step-item.step-destination .step-header { border-left-color: #6c757d; }
        
        .step-number {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), #20c997);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.25rem;
            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
            flex-shrink: 0;
            transition: transform var(--transition-normal);
        }
        
        .step-item:hover .step-number {
            transform: scale(1.1) rotate(360deg);
        }
        
        .step-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            flex-shrink: 0;
            transition: transform var(--transition-normal);
        }
        
        .step-item:hover .step-icon {
            transform: scale(1.1);
        }
        
        .step-icon.text-download { color: #007bff; }
        .step-icon.text-warning { color: #ffc107; }
        .step-icon.text-success { color: #28a745; }
        .step-icon.text-info { color: #17a2b8; }
        .step-icon.text-danger { color: #dc3545; }
        .step-icon.text-dark { color: #343a40; }
        .step-icon.text-secondary { color: #6c757d; }
        
        .step-text {
            flex: 1;
        }
        
        .step-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }
        
        .step-description {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        
        .step-toggle {
            margin-left: auto;
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            padding: 10px 20px;
            border-radius: 25px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-normal);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        
        .step-toggle:hover {
            background: var(--primary);
            color: white;
            transform: scale(1.05);
        }
        
        .step-toggle i.fa-chevron-down {
            transition: transform var(--transition-normal);
        }
        
        .step-toggle.expanded i.fa-chevron-down {
            transform: rotate(180deg);
        }
        
        .step-content {
            display: none;
            padding: 32px;
            background: linear-gradient(135deg, rgba(248,249,250,0.8) 0%, rgba(255,255,255,0.9) 100%);
            border-top: 1px solid var(--border-light);
        }
        
        .step-content.show {
            display: block;
            animation: slideDown 0.4s ease-out;
        }
        
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* ===============================================
           Step List Items
           =============================================== */
        .step-list {
            list-style: none;
            padding: 0;
        }
        
        .step-list-item {
            background: var(--bg-light);
            padding: 16px;
            margin-bottom: 12px;
            border-left: 3px solid;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition-normal);
        }
        
        .step-list-item:hover {
            transform: translateX(5px);
            box-shadow: var(--shadow-sm);
        }
        
        .step-list-item.border-primary { border-left-color: #007bff; }
        .step-list-item.border-warning { border-left-color: #ffc107; }
        .step-list-item.border-success { border-left-color: #28a745; }
        .step-list-item.border-info { border-left-color: #17a2b8; }
        .step-list-item.border-danger { border-left-color: #dc3545; }
        .step-list-item.border-dark { border-left-color: #343a40; }
        .step-list-item.border-secondary { border-left-color: #6c757d; }
        
        .step-list-item i {
            font-size: 1.25rem;
        }
        
        .step-list-item i.text-primary { color: #007bff; }
        .step-list-item i.text-warning { color: #ffc107; }
        .step-list-item i.text-success { color: #28a745; }
        .step-list-item i.text-info { color: #17a2b8; }
        .step-list-item i.text-danger { color: #dc3545; }
        .step-list-item i.text-dark { color: #343a40; }
        .step-list-item i.text-secondary { color: #6c757d; }
        
        /* ===============================================
           Images & Screenshots
           =============================================== */
        .screenshot-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin: 32px 0;
        }
        
        .screenshot-single {
            text-align: center;
            margin: 32px 0;
        }
        
        .screenshot-img {
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            max-height: 300px;
            width: auto;
            transition: transform var(--transition-normal);
            cursor: pointer;
            margin: 0 auto;
        }
        
        .screenshot-img:hover {
            transform: scale(1.5);
            z-index: 100;
            position: relative;
        }
        
        /* ===============================================
           Info Cards
           =============================================== */
        .info-card {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            text-align: center;
        }
        
        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        
        .info-card i {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        
        .info-card h4 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .info-card p {
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        
        /* ===============================================
           Promo Box
           =============================================== */
        .promo-box {
            background: linear-gradient(135deg, #f8fff9 0%, #e8f5e8 100%);
            border: 2px solid var(--primary);
            border-radius: 12px;
            padding: 32px;
            margin: 32px 0;
            position: relative;
            overflow: hidden;
        }
        
        .promo-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #28a745, #20c997, #28a745);
        }
        
        .promo-header {
            text-align: center;
            margin-bottom: 24px;
        }
        
        .promo-header i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        
        .promo-header h5 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.25rem;
        }
        
        .benefit-item {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(40, 167, 69, 0.2);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 16px;
            transition: all var(--transition-normal);
        }
        
        .benefit-item:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateX(5px);
            box-shadow: 0 2px 10px rgba(40, 167, 69, 0.15);
        }
        
        .benefit-icon {
            font-size: 2rem;
            color: var(--primary);
            min-width: 50px;
            text-align: center;
        }
        
        .benefit-text strong {
            display: block;
            color: #2d5a3d;
            font-size: 1.1em;
            margin-bottom: 4px;
        }
        
        .benefit-text small {
            color: var(--text-secondary);
        }
        
        /* ===============================================
           FAQ Section
           =============================================== */
        .faq-container {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border-light);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .faq-question {
            padding: 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }

        .faq-question h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0;
        }

        .faq-question i {
            color: var(--primary);
            font-size: 1.25rem;
            transition: transform var(--transition-normal);
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 2000px;
        }

        .faq-answer p {
            padding: 0 24px 24px 24px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.7;
        }

        .faq-answer ul, 
        .faq-answer ol {
            margin: 12px 0;
            padding-left: 48px;
            padding-right: 24px;
            padding-bottom: 24px;
        }

        .faq-answer li {
            margin-bottom: 8px;
            line-height: 1.6;
            color: var(--text-secondary);
        }

        .faq-answer strong {
            color: var(--text-primary);
        }

        .faq-answer a {
            color: var(--primary);
            text-decoration: underline;
        }

        .faq-answer a:hover {
            color: var(--primary-dark);
        }
        
        /* ===============================================
           Responsive
           =============================================== */
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            
            .download-grid {
                grid-template-columns: 1fr;
            }
            
            .screenshot-grid {
                grid-template-columns: 1fr;
            }
            
            .step-header {
                flex-wrap: wrap;
            }
            
            .step-toggle {
                width: 100%;
                justify-content: center;
                margin-top: 16px;
            }
            
            .nav-buttons {
                flex-direction: column;
            }
            
            .hero-section .btn-outline-primary,
            .section .btn-outline-primary,
            .nav-buttons .btn-outline-primary,
            .hero-section .btn-outline-secondary,
            .section .btn-outline-secondary,
            .nav-buttons .btn-outline-secondary {
                width: 100%;
            }
        }
        
        /* ===============================================
           Dividers
           =============================================== */
        hr {
            border: none;
            border-top: 1px solid var(--border-light);
            margin: 40px 0;
        }