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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
        }

        .tfci-header {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .tfci-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

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

        .tfci-nav-menu {
            display: flex;
            gap: 2rem;
            align-items: center;
        }

        .tfci-nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: opacity 0.3s ease;
            font-size: 15px;
        }

        .tfci-nav-link:hover {
            opacity: 0.8;
        }

        .tfci-hero-section {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            color: white;
            padding: 4rem 2rem;
            text-align: center;
        }

        .tfci-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .tfci-main-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        .tfci-hero-description {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .tfci-download-badge-group {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 2rem;
        }

        .tfci-badge-item {
            background: white;
            color: #25D366;
            padding: 0.8rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .tfci-badge-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }

        .tfci-content-wrapper {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 2rem;
        }

        .tfci-version-card {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }

        .tfci-section-heading {
            font-size: 2rem;
            color: #128C7E;
            margin-bottom: 1.5rem;
            border-left: 5px solid #25D366;
            padding-left: 1rem;
        }

        .tfci-version-info-box {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            border: 2px solid #25D366;
        }

        .tfci-version-number {
            font-size: 1.5rem;
            font-weight: 700;
            color: #25D366;
            margin-bottom: 0.5rem;
        }

        .tfci-release-date {
            color: #666;
            font-size: 0.95rem;
        }

        .tfci-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }

        .tfci-feature-item {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 2rem;
            border-radius: 10px;
            border-left: 4px solid #25D366;
            transition: transform 0.3s ease;
        }

        .tfci-feature-item:hover {
            transform: translateX(5px);
        }

        .tfci-feature-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .tfci-feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #128C7E;
            margin-bottom: 0.8rem;
        }

        .tfci-feature-text {
            color: #555;
            line-height: 1.7;
        }

        .tfci-changelog-list {
            list-style: none;
            padding: 0;
        }

        .tfci-changelog-item {
            padding: 1rem;
            margin-bottom: 1rem;
            background: #f8f9fa;
            border-radius: 8px;
            border-left: 3px solid #25D366;
            transition: background 0.3s ease;
        }

        .tfci-changelog-item:hover {
            background: #e9ecef;
        }

        .tfci-changelog-item::before {
            content: "✓";
            color: #25D366;
            font-weight: bold;
            margin-right: 0.8rem;
            font-size: 1.2rem;
        }

        .tfci-cta-section {
            background: linear-gradient(135deg, #128C7E 0%, #075E54 100%);
            color: white;
            padding: 4rem 2rem;
            text-align: center;
            margin: 3rem 0;
        }

        .tfci-cta-title {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
        }

        .tfci-cta-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .tfci-cta-button {
            display: inline-block;
            background: #25D366;
            color: white;
            padding: 1.2rem 3rem;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0,0,0,0.3);
        }

        .tfci-cta-button:hover {
            background: #20BA5A;
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(0,0,0,0.4);
        }

        .tfci-requirements-box {
            background: #fff3cd;
            border: 2px solid #ffc107;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 2rem 0;
        }

        .tfci-requirements-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #856404;
            margin-bottom: 1rem;
        }

        .tfci-requirements-list {
            list-style: none;
            padding-left: 0;
        }

        .tfci-requirements-list li {
            padding: 0.5rem 0;
            color: #856404;
        }

        .tfci-requirements-list li::before {
            content: "▸";
            color: #ffc107;
            font-weight: bold;
            margin-right: 0.8rem;
        }

        .tfci-footer {
            background: #075E54;
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }

        .tfci-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        .tfci-footer-text {
            margin-bottom: 1rem;
            opacity: 0.9;
        }

        .tfci-footer-links {
            display: flex;
            gap: 2rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
        }

        .tfci-footer-link {
            color: white;
            text-decoration: none;
            opacity: 0.8;
            transition: opacity 0.3s ease;
        }

        .tfci-footer-link:hover {
            opacity: 1;
        }

        .tfci-copyright {
            border-top: 1px solid rgba(255,255,255,0.2);
            padding-top: 1.5rem;
            opacity: 0.7;
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .tfci-main-title {
                font-size: 2rem;
            }

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

            .tfci-nav-menu {
                flex-direction: column;
                gap: 1rem;
            }

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

            .tfci-section-heading {
                font-size: 1.5rem;
            }

            .tfci-cta-title {
                font-size: 1.8rem;
            }
        }