:root {
            --primary-color: #0a3d62;
            --secondary-color: #1e90ff;
            --accent-color: #f9ca24;
            --light-bg: #f8f9fa;
            --dark-text: #2c3e50;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            overflow-x: hidden;
        }
        .navbar {
            background-color: rgba(10, 61, 98, 0.95) !important;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            padding-top: 1rem;
            padding-bottom: 1rem;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: white !important;
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            color: rgba(255,255,255,0.9) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: all 0.3s;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-color) !important;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            left: 50%;
            bottom: 0;
            transition: all 0.3s;
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
            left: 0;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #1a5276 100%);
            color: white;
            padding: 10rem 0 8rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            opacity: 0.15;
        }
        .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;
            margin-bottom: 2.5rem;
            opacity: 0.9;
        }
        .btn-primary-custom {
            background: linear-gradient(to right, var(--secondary-color), #4a69bd);
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
            color: white;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }
        .feature-card {
            background: white;
            border-radius: 15px;
            padding: 2.5rem 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            border-top: 5px solid transparent;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            border-top-color: var(--secondary-color);
            box-shadow: 0 15px 35px rgba(0,0,0,0.12);
        }
        .feature-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 1.5rem;
        }
        .flink {
            display: inline-block;
            background: var(--light-bg);
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            margin: 0.5rem;
            color: var(--dark-text);
            text-decoration: none;
            transition: all 0.3s;
            border: 2px solid transparent;
        }
        .flink:hover {
            background: white;
            border-color: var(--secondary-color);
            color: var(--secondary-color);
            transform: translateY(-3px);
        }
        .product-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            transition: all 0.3s;
            height: 100%;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.15);
        }
        .product-img {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .product-card:hover .product-img {
            transform: scale(1.05);
        }
        footer {
            background: var(--primary-color);
            color: white;
            padding-top: 4rem;
        }
        footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--accent-color);
        }
        .footer-bottom {
            background: rgba(0,0,0,0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
        }
        .contact-info li {
            margin-bottom: 1rem;
            padding-left: 2rem;
            position: relative;
        }
        .contact-info li i {
            position: absolute;
            left: 0;
            top: 0.3rem;
            color: var(--accent-color);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .timeline {
            position: relative;
            padding-left: 3rem;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 1.5rem;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--secondary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.5rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -3.3rem;
            top: 0.5rem;
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
            background: var(--primary-color);
            border: 3px solid var(--secondary-color);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .navbar-nav {
                background: rgba(10, 61, 98, 0.98);
                padding: 1rem;
                border-radius: 10px;
                margin-top: 1rem;
            }
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stats-label {
            font-size: 1rem;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .parallax-section {
            background: url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') fixed center/cover;
            padding: 6rem 0;
            position: relative;
        }
        .parallax-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 61, 98, 0.85);
        }
        .parallax-content {
            position: relative;
            z-index: 2;
            color: white;
        }