:root {
            --primary-color: #1a365d;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.8;
        }
        .navbar {
            background-color: rgba(26, 54, 93, 0.95);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: white !important;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2069&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            opacity: 0.95;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 2.5rem;
            position: relative;
            padding-bottom: 1rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background-color: rgba(42, 157, 143, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--accent-color);
            font-size: 1.8rem;
        }
        .service-card {
            border-top: 4px solid var(--accent-color);
        }
        .product-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .news-card .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .stats-section {
            background: linear-gradient(to right, var(--primary-color), #2d4a7c);
            color: white;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--secondary-color);
        }
        .contact-info-box {
            background-color: var(--light-color);
            border-radius: 10px;
            padding: 2rem;
            height: 100%;
            transition: transform 0.3s;
            border-left: 4px solid var(--accent-color);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        .contact-icon {
            font-size: 2rem;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        footer {
            background-color: var(--primary-color);
            color: rgba(255, 255, 255, 0.85);
        }
        footer a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--secondary-color);
        }
        .footer-bottom {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            font-size: 0.9rem;
        }
        .friendlink-section {
            background-color: #f8f9fa;
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            color: var(--primary-color);
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 54, 93, 0.2);
            border-color: var(--primary-color);
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background-color: #c1121f;
            border-color: #c1121f;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(230, 57, 70, 0.3);
        }
        .btn-outline-custom {
            color: white;
            border-color: white;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-outline-custom:hover {
            background-color: white;
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background-color: var(--accent-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--accent-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 1000;
            box-shadow: 0 4px 10px rgba(230, 57, 70, 0.3);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 6rem 0;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }