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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
        }

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

        .tfci-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .tfci-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .tfci-logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: bold;
            color: #25D366;
            text-decoration: none;
        }

        .tfci-logo img {
            height: 40px;
            margin-right: 10px;
        }

        .tfci-nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
        }

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

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

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

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

        .tfci-main {
            min-height: calc(100vh - 80px);
            padding: 60px 0;
        }

        .tfci-hero {
            text-align: center;
            background: white;
            border-radius: 20px;
            padding: 60px 40px;
            margin-bottom: 40px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
        }

        .tfci-hero-title {
            font-size: 3.5rem;
            font-weight: 700;
            color: #25D366;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .tfci-hero-subtitle {
            font-size: 1.3rem;
            color: #666;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .tfci-download-section {
            background: white;
            border-radius: 20px;
            padding: 50px 40px;
            margin-bottom: 40px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }

        .tfci-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .tfci-download-card {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 2px solid transparent;
        }

        .tfci-download-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(37, 211, 102, 0.2);
            border-color: #25D366;
        }

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

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

        .tfci-download-btn {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 5px 15px rgba(37, 211, 102, 0.3);
        }

        .tfci-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
        }

        .tfci-version-info {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            margin-top: 15px;
            font-size: 0.9rem;
            color: #666;
        }

        .tfci-features-section {
            background: white;
            border-radius: 20px;
            padding: 50px 40px;
            margin-bottom: 40px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }

        .tfci-section-title {
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
            color: #25D366;
        }

        .tfci-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .tfci-feature-card {
            text-align: center;
            padding: 30px 20px;
            border-radius: 15px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            transition: transform 0.3s ease;
        }

        .tfci-feature-card:hover {
            transform: translateY(-5px);
        }

        .tfci-feature-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: #25D366;
        }

        .tfci-feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }

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

        .tfci-cta-section {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            color: white;
            margin-bottom: 40px;
        }

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

        .tfci-cta-desc {
            font-size: 1.2rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .tfci-cta-btn {
            background: white;
            color: #25D366;
            padding: 18px 40px;
            border: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
        }

        .tfci-cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }

        .tfci-footer {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            padding: 40px 0;
            text-align: center;
            border-radius: 20px 20px 0 0;
        }

        .tfci-footer-content {
            color: #666;
            margin-bottom: 20px;
        }

        .tfci-footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 20px;
        }

        .tfci-footer-link {
            color: #666;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .tfci-footer-link:hover {
            color: #25D366;
        }

        .tfci-copyright {
            color: #999;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .tfci-nav-menu {
                display: none;
            }

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

            .tfci-hero-subtitle {
                font-size: 1.1rem;
            }

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

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

            .tfci-hero,
            .tfci-download-section,
            .tfci-features-section,
            .tfci-cta-section {
                padding: 40px 20px;
            }

            .tfci-footer-links {
                flex-direction: column;
                gap: 15px;
            }
        }