:root {
            --primary-color: #2c7873;
            --secondary-color: #6fb3b8;
            --accent-color: #f8b400;
            --light-color: #f7f9fb;
            --dark-color: #2a2d34;
            --text-color: #444;
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: "Helvetica Neue", "PingFang 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;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(44, 120, 115, 0.9) 0%, rgba(111, 179, 184, 0.85) 100%), url('https://images.unsplash.com/photo-1582719508461-905c673771fd?ixlib=rb-4.0.3&auto=format&fit=crop&w=1925&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 8rem 0 6rem;
            margin-top: 76px;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            display: inline-block;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .section-title.center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: var(--transition);
            border: none;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: rgba(44, 120, 115, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .icon-box i {
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: var(--border-radius);
        }
        .btn-primary:hover {
            background-color: #245f5b;
            border-color: #245f5b;
            transform: translateY(-2px);
        }
        .btn-accent {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            color: #333;
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: var(--border-radius);
        }
        .btn-accent:hover {
            background-color: #e0a000;
            border-color: #e0a000;
            color: #333;
            transform: translateY(-2px);
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 2rem;
        }
        .process-step .step-number {
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.3rem;
            margin: 0 auto 1.5rem;
        }
        .process-connector {
            position: absolute;
            top: 25px;
            right: -25px;
            width: 50px;
            height: 2px;
            background-color: var(--secondary-color);
            display: none;
        }
        @media (min-width: 768px) {
            .process-connector {
                display: block;
            }
        }
        .flink {
            display: inline-block;
            background-color: var(--light-color);
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background-color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(44, 120, 115, 0.1);
        }
        .footer {
            background-color: var(--dark-color);
            color: #bbb;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #ddd;
        }
        .footer a:hover {
            color: white;
        }
        .footer-title {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-color);
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            margin-right: 0.5rem;
            transition: var(--transition);
        }
        .social-links a:hover {
            background-color: var(--accent-color);
            color: var(--dark-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--accent-color);
            color: var(--dark-color);
        }
        .product-img {
            height: 220px;
            object-fit: cover;
            border-radius: var(--border-radius) var(--border-radius) 0 0;
        }
        .news-card {
            border-left: 4px solid var(--primary-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .news-date {
            color: var(--secondary-color);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .contact-info-box {
            background-color: var(--light-color);
            padding: 2rem;
            border-radius: var(--border-radius);
            height: 100%;
            transition: var(--transition);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .map-container {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            height: 100%;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
        }