:root {
            --primary-color: #d32f2f;
            --secondary-color: #ff9800;
            --dark-color: #333333;
            --light-color: #f8f9fa;
            --text-color: #555;
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            font-family: 'Noto Sans SC', sans-serif;
        }
        body {
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            color: var(--dark-color);
            font-weight: 700;
        }
        .section-title {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 50px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 80px;
            height: 4px;
            background: var(--primary-color);
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            margin: 0 10px;
            position: relative;
        }
        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1556909114-f6e7ad7d3136?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            color: white;
            padding: 180px 0 120px;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 25px;
        }
        .hero-section p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            max-width: 700px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            border-radius: var(--border-radius);
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #b71c1c;
            border-color: #b71c1c;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 12px 30px;
            border-radius: var(--border-radius);
            font-weight: 500;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background-color: #f57c00;
            border-color: #f57c00;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .feature-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px;
            height: 100%;
            transition: var(--transition);
            border: 1px solid #eee;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: rgba(211, 47, 47, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 28px;
        }
        .product-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid #eee;
            height: 100%;
            background: white;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .product-img {
            height: 250px;
            overflow: hidden;
        }
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .product-card:hover .product-img img {
            transform: scale(1.1);
        }
        .product-info {
            padding: 20px;
        }
        .product-title {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        .product-category {
            color: var(--primary-color);
            font-weight: 500;
            font-size: 0.9rem;
            margin-bottom: 10px;
            display: block;
        }
        .news-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid #eee;
            height: 100%;
            background: white;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .news-img {
            height: 200px;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-img img {
            transform: scale(1.1);
        }
        .news-info {
            padding: 20px;
        }
        .news-date {
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .news-title {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        .contact-info {
            padding: 30px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: 100%;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: rgba(211, 47, 47, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary-color);
            font-size: 24px;
        }
        .contact-details h4 {
            margin-bottom: 15px;
        }
        .footer {
            background: var(--dark-color);
            color: #ddd;
            padding: 70px 0 20px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 50px;
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
        }
        .friendlink {
            background: #f9f9f9;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 10px 25px;
            margin: 10px 15px;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            border: 1px solid #eee;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .flink-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            color: white;
        }
        .certificate-badge {
            display: inline-block;
            background: #f0f0f0;
            padding: 5px 15px;
            border-radius: 4px;
            margin-right: 10px;
            margin-bottom: 10px;
            font-size: 0.85rem;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 150px 0 80px;
            }
            .section-title {
                margin-bottom: 30px;
            }
            .flink {
                margin: 5px 10px;
                padding: 8px 20px;
                font-size: 0.9rem;
            }
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--dark-color);
            font-weight: 500;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
            margin-top: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-color);
        }
        .timeline-date {
            font-weight: 500;
            color: var(--primary-color);
            margin-bottom: 5px;
        }