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

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        line-height: 1.6;
        color: #333;
        overflow-x: hidden;
    }

    .tfci-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        z-index: 1000;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
    }

    .tfci-nav {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 70px;
    }

    .tfci-logo img {
        height: 40px;
        width: auto;
    }

    .tfci-menu-toggle {
        display: none;
        flex-direction: column;
        background: none;
        border: none;
        cursor: pointer;
        padding: 5px;
    }

    .tfci-menu-toggle span {
        width: 25px;
        height: 3px;
        background: #25D366;
        margin: 3px 0;
        transition: 0.3s;
        border-radius: 2px;
    }

    .tfci-nav-menu {
        display: flex;
        align-items: center;
        gap: 30px;
    }

    .tfci-nav-menu a {
        text-decoration: none;
        color: #333;
        font-weight: 500;
        transition: color 0.3s ease;
        position: relative;
    }

    .tfci-nav-menu a:hover {
        color: #25D366;
    }

    .tfci-nav-menu a::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0;
        height: 2px;
        background: #25D366;
        transition: width 0.3s ease;
    }

    .tfci-nav-menu a:hover::after {
        width: 100%;
    }

    .tfci-nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .tfci-hero-section {
        min-height: 100vh;
        background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
    }

    .tfci-hero-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-image: url('images/hero.jpg');
        background-size: cover;
        background-position: center;
        opacity: 0.1;
    }

    .tfci-hero-content {
        max-width: 1200px;
        margin: 0 auto;
        padding: 100px 20px 50px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
        position: relative;
        z-index: 2;
    }

    .tfci-hero-text h1 {
        font-size: 3.5rem;
        font-weight: 700;
        color: white;
        margin-bottom: 20px;
        line-height: 1.2;
    }

    .tfci-hero-text p {
        font-size: 1.3rem;
        color: rgba(255, 255, 255, 0.9);
        margin-bottom: 30px;
        line-height: 1.6;
    }

    .tfci-hero-buttons {
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }

    .tfci-btn-primary {
        background: white;
        color: #25D366;
        padding: 15px 30px;
        border: none;
        border-radius: 50px;
        font-size: 1.1rem;
        font-weight: 600;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        gap: 10px;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .tfci-btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    }

    .tfci-btn-secondary {
        background: transparent;
        color: white;
        padding: 15px 30px;
        border: 2px solid white;
        border-radius: 50px;
        font-size: 1.1rem;
        font-weight: 600;
        text-decoration: none;
        display: inline-flex;
        align-items: center;
        gap: 10px;
        transition: all 0.3s ease;
    }

    .tfci-btn-secondary:hover {
        background: white;
        color: #25D366;
    }

    .tfci-hero-visual {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .tfci-phone-mockup {
        width: 300px;
        height: 600px;
        background: white;
        border-radius: 30px;
        padding: 20px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        position: relative;
        overflow: hidden;
    }

    .tfci-phone-screen {
        width: 100%;
        height: 100%;
        background: #ECE5DD;
        border-radius: 20px;
        position: relative;
        overflow: hidden;
    }

    .tfci-stats-section {
        padding: 80px 0;
        background: #f8f9fa;
    }

    .tfci-stats-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-stats-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        text-align: center;
    }

    .tfci-stat-item {
        background: white;
        padding: 40px 20px;
        border-radius: 15px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: transform 0.3s ease;
    }

    .tfci-stat-item:hover {
        transform: translateY(-5px);
    }

    .tfci-stat-number {
        font-size: 3rem;
        font-weight: 700;
        color: #25D366;
        margin-bottom: 10px;
    }

    .tfci-stat-label {
        font-size: 1.1rem;
        color: #666;
        font-weight: 500;
    }

    .tfci-features-section {
        padding: 100px 0;
        background: white;
    }

    .tfci-features-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-section-header {
        text-align: center;
        margin-bottom: 60px;
    }

    .tfci-section-title {
        font-size: 2.5rem;
        font-weight: 700;
        color: #333;
        margin-bottom: 20px;
    }

    .tfci-section-subtitle {
        font-size: 1.2rem;
        color: #666;
        max-width: 600px;
        margin: 0 auto;
    }

    .tfci-features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 40px;
    }

    .tfci-feature-card {
        background: #f8f9fa;
        padding: 40px;
        border-radius: 20px;
        transition: all 0.3s ease;
        border: 1px solid transparent;
    }

    .tfci-feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        border-color: #25D366;
    }

    .tfci-feature-icon {
        font-size: 3rem;
        margin-bottom: 20px;
        display: block;
    }

    .tfci-feature-title {
        font-size: 1.5rem;
        font-weight: 600;
        color: #333;
        margin-bottom: 15px;
    }

    .tfci-feature-desc {
        color: #666;
        line-height: 1.6;
    }

    .tfci-products-section {
        padding: 100px 0;
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    }

    .tfci-products-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-products-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 40px;
    }

    .tfci-product-card {
        background: white;
        padding: 40px;
        border-radius: 20px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .tfci-product-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, #25D366, #128C7E);
    }

    .tfci-product-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }

    .tfci-product-name {
        font-size: 1.5rem;
        font-weight: 600;
        color: #333;
        margin-bottom: 15px;
    }

    .tfci-product-desc {
        color: #666;
        line-height: 1.6;
        margin-bottom: 20px;
    }

    .tfci-product-highlight {
        background: #25D366;
        color: white;
        padding: 8px 15px;
        border-radius: 20px;
        font-size: 0.9rem;
        font-weight: 500;
        display: inline-block;
    }

    .tfci-testimonials-section {
        padding: 100px 0;
        background: white;
    }

    .tfci-testimonials-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-testimonials-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 30px;
    }

    .tfci-testimonial-card {
        background: #f8f9fa;
        padding: 30px;
        border-radius: 15px;
        position: relative;
        transition: transform 0.3s ease;
    }

    .tfci-testimonial-card:hover {
        transform: translateY(-3px);
    }

    .tfci-testimonial-content {
        font-style: italic;
        color: #555;
        margin-bottom: 20px;
        line-height: 1.6;
    }

    .tfci-testimonial-author {
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .tfci-author-avatar {
        font-size: 2rem;
    }

    .tfci-author-info h4 {
        font-weight: 600;
        color: #333;
        margin-bottom: 5px;
    }

    .tfci-author-info p {
        color: #666;
        font-size: 0.9rem;
    }

    .tfci-rating {
        color: #FFD700;
        margin-top: 10px;
    }

    .tfci-cta-section {
        padding: 100px 0;
        background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
        text-align: center;
        color: white;
    }

    .tfci-cta-container {
        max-width: 800px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-cta-title {
        font-size: 2.5rem;
        font-weight: 700;
        margin-bottom: 20px;
    }

    .tfci-cta-subtitle {
        font-size: 1.2rem;
        margin-bottom: 40px;
        opacity: 0.9;
    }

    .tfci-download-buttons {
        display: flex;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .tfci-download-btn {
        background: white;
        color: #333;
        padding: 15px 25px;
        border-radius: 10px;
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 600;
        transition: all 0.3s ease;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .tfci-download-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    }

    .tfci-footer {
        background: #1a1a1a;
        color: white;
        padding: 60px 0 20px;
    }

    .tfci-footer-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .tfci-footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 40px;
        margin-bottom: 40px;
    }

    .tfci-footer-section h3 {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 20px;
        color: #25D366;
    }

    .tfci-footer-section ul {
        list-style: none;
    }

    .tfci-footer-section ul li {
        margin-bottom: 10px;
    }

    .tfci-footer-section ul li a {
        color: #ccc;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .tfci-footer-section ul li a:hover {
        color: #25D366;
    }

    .tfci-footer-bottom {
        border-top: 1px solid #333;
        padding-top: 20px;
        text-align: center;
        color: #999;
    }

    @media (max-width: 768px) {
        .tfci-menu-toggle {
            display: flex;
        }

        .tfci-nav-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            background: white;
            flex-direction: column;
            padding: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .tfci-nav-menu.active {
            display: flex;
        }

        .tfci-hero-content {
            grid-template-columns: 1fr;
            text-align: center;
            gap: 40px;
        }

        .tfci-hero-text h1 {
            font-size: 2.5rem;
        }

        .tfci-hero-buttons {
            justify-content: center;
        }

        .tfci-phone-mockup {
            width: 250px;
            height: 500px;
        }

        .tfci-stats-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tfci-features-grid,
        .tfci-products-grid,
        .tfci-testimonials-grid {
            grid-template-columns: 1fr;
        }

        .tfci-section-title {
            font-size: 2rem;
        }

        .tfci-cta-title {
            font-size: 2rem;
        }

        .tfci-download-buttons {
            flex-direction: column;
            align-items: center;
        }
    }

    @media (max-width: 480px) {
        .tfci-hero-text h1 {
            font-size: 2rem;
        }

        .tfci-stats-grid {
            grid-template-columns: 1fr;
        }

        .tfci-stat-number {
            font-size: 2.5rem;
        }

        .tfci-feature-card,
        .tfci-product-card,
        .tfci-testimonial-card {
            padding: 25px;
        }
    }