:root {
            --primary-blue: #0056b3;
            --secondary-blue: #0d6efd;
            --dark-blue: #003d82;
            --light-blue: #e8f4ff;
            --accent-orange: #fd7e14;
            --gray-light: #f8f9fa;
            --gray-dark: #343a40;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark-blue);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-blue) !important;
        }
        .navbar-brand span {
            color: var(--accent-orange);
        }
        .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: var(--transition);
            border-radius: 4px;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(0, 86, 179, 0.1);
            color: var(--primary-blue) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 45, 100, 0.85), rgba(0, 45, 100, 0.9)), url('https://images.unsplash.com/photo-1473968512647-3e447244af8f?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 10rem 0 7rem;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-blue), var(--accent-orange));
            border-radius: 2px;
        }
        .section-title.center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .icon-box {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
            transition: var(--transition);
            border-top: 4px solid var(--primary-blue);
        }
        .icon-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,86,179,0.15);
        }
        .icon-box i {
            font-size: 3rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }
        .product-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
            background: white;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,86,179,0.15);
        }
        .product-card img {
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .product-card .card-body {
            padding: 1.8rem;
        }
        .badge-custom {
            background: linear-gradient(to right, var(--primary-blue), var(--secondary-blue));
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
        }
        .news-card {
            border-left: 4px solid var(--primary-blue);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
            transition: var(--transition);
        }
        .news-card:hover {
            border-left-color: var(--accent-orange);
            padding-left: 2rem;
        }
        .news-date {
            color: var(--accent-orange);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .contact-info-box {
            background: var(--light-blue);
            padding: 2rem;
            border-radius: 12px;
            height: 100%;
            border-left: 5px solid var(--primary-blue);
        }
        .contact-info-box i {
            color: var(--primary-blue);
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .footer {
            background-color: var(--gray-dark);
            color: rgba(255,255,255,0.8);
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
        }
        .friendlink {
            background-color: #f9f9f9;
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            color: var(--dark-blue);
            font-weight: 500;
            text-decoration: none !important;
        }
        .flink:hover {
            background: var(--primary-blue);
            color: white !important;
            transform: translateY(-3px);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-blue);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            transition: var(--transition);
            z-index: 1000;
        }
        .back-to-top.active {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--dark-blue);
            color: white;
        }
        .btn-custom {
            background: linear-gradient(to right, var(--primary-blue), var(--secondary-blue));
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 30px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .btn-custom:hover {
            background: linear-gradient(to right, var(--dark-blue), var(--primary-blue));
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,86,179,0.2);
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 7px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-blue), var(--accent-orange));
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -2rem;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--primary-blue);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-blue);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
            padding: 1rem;
            max-height: 80px;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }