:root {
            --primary-color: #0a4a7a;
            --secondary-color: #e6a23c;
            --accent-color: #409eff;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #333;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: var(--box-shadow);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-header h2 {
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 4px;
            background: var(--secondary-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .bg-light {
            background-color: #f9fbfd !important;
        }
        .navbar {
            padding: 20px 0;
            background-color: rgba(255,255,255,0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .navbar.scrolled {
            padding: 12px 0;
            background-color: rgba(255,255,255,0.98);
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            margin: 0 8px;
            color: var(--dark-color) !important;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .hero-carousel {
            height: 600px;
            overflow: hidden;
        }
        .carousel-item {
            height: 100%;
            background-size: cover;
            background-position: center;
        }
        .carousel-caption {
            bottom: 30%;
            text-align: left;
            background: rgba(10, 74, 122, 0.8);
            padding: 30px;
            border-radius: var(--border-radius);
            max-width: 600px;
            margin-left: 10%;
        }
        .carousel-caption h1 {
            font-size: 2.8rem;
            color: white;
            margin-bottom: 20px;
        }
        .carousel-caption p {
            font-size: 1.2rem;
            color: #e0e0e0;
        }
        .product-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
            background: white;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .product-card img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .product-card-body {
            padding: 25px;
        }
        .product-card h4 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .feature-box {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--border-radius);
            background: white;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .feature-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .feature-box i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .news-card {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            background: white;
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
        }
        .news-card img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .news-card-body {
            padding: 20px;
        }
        .news-date {
            color: #888;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .contact-info-box {
            background: var(--primary-color);
            color: white;
            padding: 30px;
            border-radius: var(--border-radius);
            height: 100%;
        }
        .contact-info-box i {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--secondary-color);
        }
        .friendlink {
            background-color: #f1f7fd;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 8px;
            border-radius: 50px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
            font-weight: 500;
            color: var(--primary-color);
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(10,74,122,0.1);
        }
        footer {
            background-color: var(--dark-color);
            color: #ccc;
            padding: 70px 0 20px;
        }
        footer h5 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.2rem;
        }
        footer a {
            color: #ccc;
        }
        footer a:hover {
            color: var(--secondary-color);
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 992px) {
            .hero-carousel {
                height: 500px;
            }
            .carousel-caption {
                bottom: 20%;
                margin-left: 5%;
                padding: 20px;
            }
            .carousel-caption h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hero-carousel {
                height: 400px;
            }
            .carousel-caption {
                bottom: 15%;
                margin: 0 5%;
                padding: 15px;
            }
            .carousel-caption h1 {
                font-size: 1.8rem;
            }
            .section-padding {
                padding: 60px 0;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 576px) {
            .hero-carousel {
                height: 350px;
            }
            .carousel-caption h1 {
                font-size: 1.5rem;
            }
            .carousel-caption p {
                font-size: 1rem;
            }
        }