:root {
        --primary-color: #c0392b;
        --secondary-color: #FF8C00;
        --text-color: #333;
        --text-light: #7f8c8d;
        --background-color: #f9f9f9;
        --card-background: #fff;
        --border-radius: 8px;
        --box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        --transition: all 0.3s ease;
    }

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

    .testimonials-carousel-container {
        max-width: 1440px;
        margin: 0 auto;
        padding: 60px 20px;
    }

    .testimonials-title {
        font-size: 2.5rem;
        margin-bottom: 40px;
        color: var(--text-color);
        text-align: center;
        position: relative;
        display: inline-block;
        left: 50%;
        transform: translateX(-50%);
    }

    .testimonials-title::after {
        content: '';
        position: absolute;
        bottom: -10px;
        left: 25%;
        width: 50%;
        height: 4px;
        background-color: var(--primary-color);
        border-radius: 2px;
    }

    /* Tab Navigation */
    .tab-navigation {
        display: flex;
        justify-content: center;
        margin-bottom: 30px;
        flex-wrap: wrap;
        gap: 10px;
    }

    .tab-btn {
        padding: 12px 24px;
        background-color: var(--card-background);
        color: var(--text-color);
        border: 2px solid transparent;
        border-radius: var(--border-radius);
        cursor: pointer;
        font-weight: bold;
        transition: var(--transition);
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }

    .tab-btn:hover {
        background-color: #f5f5f5;
        transform: translateY(-2px);
    }

    .tab-btn.active {
        background-color: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
    }

    /* Testimonial Card */
    .testimonial-card {
        display: none;
        background-color: var(--card-background);
        border-radius: var(--border-radius);
        padding: 40px;
        box-shadow: var(--box-shadow);
        transition: var(--transition);
        position: relative;
        min-height: 300px;
    }

    .testimonial-card.active {
        display: block;
        animation: fadeIn 0.5s ease-in-out;
    }

    .testimonial-card::before {
        content: '"';
        position: absolute;
        top: 20px;
        left: 30px;
        font-size: 6rem;
        color: var(--primary-color);
        opacity: 0.1;
        font-family: Georgia, serif;
    }

    .testimonial-content {
        color: var(--text-color);
        line-height: 1.7;
        font-size: 1.1rem;
        padding-left: 20px;
        border-left: 3px solid var(--primary-color);
        margin-bottom: 30px;
        position: relative;
        z-index: 1;
    }

    .testimonial-author {
        font-weight: bold;
        font-size: 1.2rem;
        color: var(--text-color);
        margin-bottom: 5px;
    }

    .testimonial-company {
        color: var(--primary-color);
        font-style: italic;
    }

    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    /* Responsive Design */
    @media (max-width: 768px) {
        .testimonials-title {
            font-size: 2rem;
        }

        .testimonial-card {
            padding: 30px 20px;
        }

        .testimonial-card::before {
            font-size: 4rem;
            top: 10px;
            left: 10px;
        }

        .testimonial-content {
            font-size: 1rem;
            padding-left: 15px;
        }

        .tab-btn {
            padding: 10px 20px;
            font-size: 0.9rem;
        }
    }

    @media (max-width: 420px) {
        .testimonials-carousel-container {
            padding: 40px 15px;
        }

        .testimonials-title {
            font-size: 1.8rem;
        }

        .tab-navigation {
            flex-direction: column;
            align-items: center;
        }

        .tab-btn {
            width: 100%;
            max-width: 250px;
            text-align: center;
        }
    }