* {
            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 {
            height: 40px;
            width: auto;
        }

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

        .tfci-nav-link {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 25px;
        }

        .tfci-nav-link:hover {
            background: #25D366;
            color: white;
            transform: translateY(-2px);
        }

        .tfci-hero {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .tfci-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
            animation: tfci-float 20s infinite linear;
        }

        @keyframes tfci-float {
            0% { transform: translateY(0px); }
            100% { transform: translateY(-100px); }
        }

        .tfci-hero-content {
            position: relative;
            z-index: 2;
        }

        .tfci-main-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .tfci-subtitle {
            font-size: 1.3rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .tfci-download-section {
            background: white;
            padding: 60px 0;
            margin-top: -30px;
            border-radius: 30px 30px 0 0;
            position: relative;
            z-index: 3;
        }

        .tfci-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .tfci-download-card {
            background: linear-gradient(145deg, #f8f9fa, #e9ecef);
            border-radius: 20px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .tfci-download-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            border-color: #25D366;
        }

        .tfci-platform-icon {
            font-size: 4rem;
            margin-bottom: 20px;
            display: block;
        }

        .tfci-platform-title {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }

        .tfci-platform-info {
            color: #666;
            margin-bottom: 25px;
            line-height: 1.6;
        }

        .tfci-download-btn {
            background: linear-gradient(135deg, #25D366, #128C7E);
            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(-3px);
            box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
        }

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

        .tfci-section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 50px;
            color: #333;
        }

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

        .tfci-feature-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .tfci-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
        }

        .tfci-feature-icon {
            font-size: 3rem;
            color: #25D366;
            margin-bottom: 20px;
        }

        .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-requirements-section {
            background: white;
            padding: 80px 0;
        }

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

        .tfci-requirement-card {
            background: linear-gradient(145deg, #f8f9fa, #e9ecef);
            padding: 30px;
            border-radius: 15px;
            border-left: 5px solid #25D366;
        }

        .tfci-requirement-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: #333;
        }

        .tfci-requirement-list {
            list-style: none;
        }

        .tfci-requirement-list li {
            padding: 8px 0;
            color: #666;
            position: relative;
            padding-left: 25px;
        }

        .tfci-requirement-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #25D366;
            font-weight: bold;
        }

        .tfci-cta-section {
            background: linear-gradient(135deg, #25D366, #128C7E);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

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

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

        .tfci-cta-btn {
            background: white;
            color: #25D366;
            padding: 20px 40px;
            border: none;
            border-radius: 50px;
            font-size: 1.3rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }

        .tfci-cta-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
        }

        .tfci-footer {
            background: #333;
            color: white;
            padding: 50px 0 30px;
            text-align: center;
        }

        .tfci-footer-content {
            margin-bottom: 30px;
        }

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

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

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

        .tfci-copyright {
            color: #999;
            font-size: 0.9rem;
            border-top: 1px solid #555;
            padding-top: 20px;
        }

        @media (max-width: 768px) {
            .tfci-main-title {
                font-size: 2.5rem;
            }

            .tfci-nav-menu {
                flex-direction: column;
                gap: 15px;
            }

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

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

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

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