:root {
            --tb-primary: #1e4a8b;
            --tb-secondary: #6c757d;
            --tb-success: #28a745;
            --tb-info: #17a2b8;
            --tb-warning: #ffc107;
            --tb-danger: #dc3545;
            --tb-light: #f8f9fa;
            --tb-dark: #343a40;
            --tb-gradient: linear-gradient(135deg, #1e4a8b 0%, #2a6ec6 100%);
            --tb-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --tb-radius: 10px;
            --tb-transition: all 0.3s ease;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
            line-height: 1.6;
            padding-top: 20px;
        }
        
        .tb-heading {
            color: var(--tb-primary);
            font-weight: 700;
            margin-bottom: 1.5rem;
            position: relative;
        }
        
        .tb-heading:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--tb-primary);
            border-radius: 2px;
        }
        
        .tb-heading-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        
        .tb-card {
            border: none;
            border-radius: var(--tb-radius);
            box-shadow: var(--tb-shadow);
            transition: var(--tb-transition);
            height: 100%;
        }
        
        .tb-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
        }
        
        .tb-card-icon {
            width: 70px;
            height: 70px;
            background: var(--tb-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 30px;
        }
        
        .tb-feature-list {
            list-style: none;
            padding-left: 0;
        }
        
        .tb-feature-list li {
            padding: 8px 0;
            padding-left: 35px;
            position: relative;
        }
        
        .tb-feature-list li:before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--tb-success);
        }
        
        .tb-btn-primary {
            background: var(--tb-gradient);
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--tb-transition);
        }
        
        .tb-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(30, 74, 139, 0.3);
            color: white;
        }
        
        .tb-hero {
            background: var(--tb-gradient);
            color: white;
            border-radius: var(--tb-radius);
            padding: 50px 40px;
            margin-bottom: 50px;
        }
        
        .tb-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        
        .tb-hero p {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        .tb-feature-box {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--tb-radius);
            background: white;
            box-shadow: var(--tb-shadow);
            height: 100%;
            transition: var(--tb-transition);
        }
        
        .tb-feature-box:hover {
            transform: translateY(-5px);
        }
        
        .tb-feature-box i {
            font-size: 40px;
            color: var(--tb-primary);
            margin-bottom: 20px;
        }
        
        .tb-price-card {
            border: 2px solid #e9ecef;
            border-radius: var(--tb-radius);
            padding: 30px;
            text-align: center;
            transition: var(--tb-transition);
        }
        
        .tb-price-card:hover {
            border-color: var(--tb-primary);
            transform: translateY(-5px);
        }
        
        .tb-price-card.featured {
            border-color: var(--tb-primary);
            box-shadow: 0 10px 25px rgba(30, 74, 139, 0.15);
        }
        
        .tb-price {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--tb-primary);
        }
        
        @media (max-width: 768px) {
            .tb-hero {
                padding: 30px 20px;
                text-align: center;
            }
            
            .tb-hero h1 {
                font-size: 2rem;
            }
            
            .tb-heading {
                font-size: 1.8rem;
            }
        }