:root {
            --primary: #4361ee;
            --primary-dark: #3a56d4;
            --secondary: #3f37c9;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: var(--dark);
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        .hero {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
            overflow: hidden;
            border-radius: 1rem;
            padding: 3rem 2rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }

        .hero p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }

        .cta-button {
            display: inline-block;
            background-color: white;
            color: var(--primary);
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .section-title {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-title h2 {
            font-size: 2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 0.5rem;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--primary);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }

        .service-card {
            background-color: white;
            border-radius: 0.5rem;
            overflow: hidden;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .service-image {
            height: 200px;
            overflow: hidden;
        }

        .service-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .service-card:hover .service-image img {
            transform: scale(1.05);
        }

        .service-content {
            padding: 1.5rem;
        }

        .service-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .service-content h3 {
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
            color: var(--dark);
        }

        .service-content p {
            color: var(--gray);
            margin-bottom: 1.5rem;
        }

        .service-features {
            margin-bottom: 1.5rem;
        }

        .service-features li {
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
            color: var(--dark);
        }

        .service-features li i {
            margin-right: 0.5rem;
            color: var(--primary);
            font-size: 0.8rem;
        }

        .price {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .service-button {
            display: block;
            text-align: center;
            background-color: var(--primary);
            color: white;
            padding: 0.7rem 1rem;
            border-radius: 0.25rem;
            text-decoration: none;
            font-weight: 600;
            transition: background-color 0.3s ease;
        }

        .service-button:hover {
            background-color: var(--primary-dark);
        }

        .standards-section {
            background-color: white;
            border-radius: 0.5rem;
            padding: 3rem 2rem;
            margin-bottom: 4rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .standards-tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tab-button {
            padding: 0.7rem 1.5rem;
            background-color: #e5e7eb;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .tab-button.active {
            background-color: var(--primary);
            color: white;
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .tab-content.active {
            display: block;
        }

        .standard-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1rem;
        }

        .feature-icon {
            font-size: 1.2rem;
            color: var(--primary);
            margin-right: 1rem;
            margin-top: 0.2rem;
        }

        .testimonials {
            margin-bottom: 4rem;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .testimonial-card {
            background-color: white;
            border-radius: 0.5rem;
            padding: 1.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .testimonial-header {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }

        .testimonial-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: cover;
            margin-right: 1rem;
        }

        .testimonial-author {
            font-weight: 600;
        }

        .testimonial-role {
            color: var(--gray);
            font-size: 0.9rem;
        }

        .testimonial-rating {
            color: var(--warning);
            margin-top: 0.2rem;
        }

        .faq-section {
            background-color: white;
            border-radius: 0.5rem;
            padding: 3rem 2rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .faq-item {
            margin-bottom: 1.5rem;
            border-bottom: 1px solid #e5e7eb;
            padding-bottom: 1.5rem;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: var(--gray);
            margin-top: 0.5rem;
        }

        .faq-answer.active {
            max-height: 200px;
        }

        .faq-toggle {
            transition: transform 0.3s ease;
        }

        .faq-toggle.active {
            transform: rotate(180deg);
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }

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

            .services-grid {
                grid-template-columns: 1fr;
            }

            .section-title h2 {
                font-size: 1.5rem;
            }
        }