* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            margin-bottom: 30px;
            padding: 30px;
            text-align: center;
        }

        .header h1 {
            font-size: 3em;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
            font-weight: 300;
        }

        .header p {
            color: #666;
            font-size: 1.2em;
            opacity: 0.8;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .card {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            color: inherit;
            position: relative;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
        }

        .card-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .card-header::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: rgba(255, 255, 255, 0.1);
            transform: rotate(45deg);
            transition: all 0.3s ease;
            opacity: 0;
        }

        .card:hover .card-header::before {
            opacity: 1;
            transform: rotate(45deg) translate(20px, 20px);
        }

        .card-icon {
            font-size: 3em;
            margin-bottom: 15px;
            display: block;
        }

        .card-title {
            font-size: 1.8em;
            font-weight: 300;
            margin-bottom: 10px;
        }

        .card-subtitle {
            opacity: 0.9;
            font-size: 1em;
        }

        .card-content {
            padding: 30px;
        }

        .card-description {
            color: #666;
            line-height: 1.6;
            font-size: 1.05em;
            margin-bottom: 20px;
        }

        .card-features {
            list-style: none;
            margin-bottom: 25px;
        }

        .card-features li {
            color: #888;
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
            font-size: 0.95em;
        }

        .card-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
        }

        .card-action {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 12px 24px;
            border-radius: 25px;
            font-weight: 600;
            font-size: 0.9em;
            border: none;
            transition: all 0.3s ease;
            display: inline-block;
        }

        .card:hover .card-action {
            transform: translateX(5px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }

        .footer {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            padding: 25px;
            text-align: center;
            color: #666;
            font-size: 0.9em;
        }

        @media (max-width: 768px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .header h1 {
                font-size: 2.5em;
            }
            
            .card-header {
                padding: 25px;
            }
            
            .card-content {
                padding: 25px;
            }
        }