:root {
            --primary-color: #003366;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
        }
        body {
            font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 51, 102, 0.9)), url('https://via.placeholder.com/1920x800/003366/FFFFFF?text=高仁电子新材料') center/cover no-repeat;
            color: white;
            padding: 8rem 0;
        }
        .section-title {
            color: var(--primary-color);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
            margin-bottom: 2rem;
            font-weight: 700;
        }
        .card {
            border: none;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .flink {
            display: inline-block;
            background: var(--light-bg);
            padding: 10px 20px;
            margin: 5px;
            border-radius: 5px;
            color: var(--primary-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer-link {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: white;
        }
        .contact-icon {
            font-size: 1.5rem;
            color: var(--accent-color);
            margin-right: 10px;
        }
        .news-item {
            border-bottom: 1px solid #eee;
            padding: 1.5rem 0;
            transition: background-color 0.3s ease;
        }
        .news-item:hover {
            background-color: #f9f9f9;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(42, 157, 143, 0.1);
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }