:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #7c3aed;
            --accent: #06b6d4;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --light-gray: #e2e8f0;
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
            --card-shadow-hover: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
            color: var(--dark);
            min-height: 100vh;
            line-height: 1.6;
        }
        
        .container {
            margin-top: 5% !important;
            max-width: 1400px;
            margin: 0 auto;
            padding: 30px;
        }
        
        /* Header */
        .header {
            text-align: center;
            margin-bottom: 50px;
            padding: 40px 0;
            position: relative;
        }
        
        .header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        
        .title {
            font-size: 3.5rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 15px;
            letter-spacing: -0.5px;
        }
        
        .subtitle {
            font-size: 1.2rem;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            font-weight: 400;
        }
        
        /* Stats Bar */
        .stats-bar {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .stat-box {
            background: white;
            padding: 20px 30px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            display: flex;
            align-items: center;
            gap: 15px;
            transition: var(--transition);
        }
        
        .stat-box:hover {
            transform: translateY(-5px);
            box-shadow: var(--card-shadow-hover);
        }
        
        .stat-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: white;
        }
        
        .stat-1 .stat-icon { background: linear-gradient(135deg, var(--primary), #60a5fa); }
        .stat-2 .stat-icon { background: linear-gradient(135deg, var(--secondary), #a78bfa); }
        .stat-3 .stat-icon { background: linear-gradient(135deg, var(--accent), #22d3ee); }
        
        .stat-info h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--dark);
        }
        
        .stat-info p {
            color: var(--gray);
            font-size: 0.9rem;
            font-weight: 500;
        }
        
        /* Controls */
        .controls {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .btn {
            background: white;
            border: none;
            padding: 14px 28px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            box-shadow: var(--card-shadow);
            color: var(--dark);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--card-shadow-hover);
        }
        
        /* Grid */
        .grid {
            /* display: grid; */
            grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
            gap: 30px;
            margin-top: 20px;
        }
        
        /* Cards */
        .card {
            margin-top: 1%;
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid var(--light-gray);
        }
        
        .card:hover {
            transform: translateY(-10px);
            box-shadow: var(--card-shadow-hover);
        }
        
        .card.active {
            border: 2px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }
        
        .card-header {
            padding: 25px;
            display: flex;
            align-items: center;
            gap: 20px;
            background: linear-gradient(90deg, #f8fafc, white);
            border-bottom: 1px solid var(--light-gray);
        }
        
        .card-number {
            width: 60px;
            height: 60px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            flex-shrink: 0;
            box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
        }
        
        .card-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
        }
        
        .card-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        .card.active .card-content {
            max-height: 1000px;
        }
        
        .content-wrapper {
            padding: 25px;
        }
        
        /* Sections */
        .section {
            margin-bottom: 30px;
        }
        
        .section:last-child {
            margin-bottom: 0;
        }
        
        .section-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--light-gray);
        }
        
        .section-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), #67e8f9);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
        }
        
        .section-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--dark);
        }
        
        /* Use Cases */
        .use-case-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        
        .use-case {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 15px;
            background: #f8fafc;
            border-radius: 12px;
            transition: var(--transition);
        }
        
        .use-case:hover {
            background: #f1f5f9;
            transform: translateX(5px);
        }
        
        .use-case-icon {
            color: var(--primary);
            font-size: 1.2rem;
            margin-top: 2px;
        }
        
        .use-case-text {
            color: var(--dark);
            font-weight: 500;
        }
        
        /* Platforms */
        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .platform-tag {
            background: linear-gradient(135deg, #e0f2fe, #dbeafe);
            color: var(--primary-dark);
            padding: 10px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid #bfdbfe;
        }
        
        .platform-tag:hover {
            background: linear-gradient(135deg, #dbeafe, #bfdbfe);
            transform: translateY(-3px);
        }
        
        /* Footer */
        .footer {
            text-align: center;
            margin-top: 60px;
            padding-top: 30px;
            border-top: 1px solid var(--light-gray);
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        .footer p {
            margin-bottom: 5px;
        }
        
        /* Responsive */
        @media (max-width: 1200px) {
            .grid {
                grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 20px;
            }
            
            .title {
                font-size: 2.5rem;
            }
            
            .grid {
                grid-template-columns: 1fr;
            }
            
            .stats-bar {
                flex-direction: column;
                align-items: center;
            }
            
            .stat-box {
                width: 100%;
                max-width: 350px;
            }
        }