:root {
            --primary-gold: #D4AF37;
            --secondary-gold: #FFD700;
            --dark-bg: #0a0a0a;
            --light-bg: #f8f9fa;
            --text-dark: #333;
            --text-light: #f8f9fa;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            overflow-x: hidden;
        }
        .navbar-brand img {
            height: 50px;
        }
        .hero-section {
            background: linear-gradient(rgba(10,10,10,0.85), rgba(10,10,10,0.9)), url('https://images.unsplash.com/photo-1535632066927-ab7c9ab60908?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: var(--text-light);
            min-height: 90vh;
            display: flex;
            align-items: center;
            position: relative;
        }
        .gold-text {
            color: var(--primary-gold);
            font-weight: 600;
        }
        .gold-border {
            border: 2px solid var(--primary-gold);
        }
        .btn-gold {
            background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
            color: #000;
            font-weight: 600;
            border: none;
            transition: all 0.3s ease;
        }
        .btn-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(to right, var(--primary-gold), var(--secondary-gold));
        }
        .product-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid #eee;
            overflow: hidden;
        }
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .product-card img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .product-card:hover img {
            transform: scale(1.05);
        }
        .process-step {
            position: relative;
            padding: 30px;
            background: var(--light-bg);
            border-radius: 10px;
            transition: all 0.3s ease;
        }
        .process-step:hover {
            background: linear-gradient(135deg, #fffaf0, #fff);
            transform: translateY(-5px);
        }
        .process-step .step-number {
            position: absolute;
            top: -15px;
            left: -15px;
            background: var(--primary-gold);
            color: #000;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.5rem;
        }
        .news-card {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .contact-info-box {
            background: var(--light-bg);
            padding: 30px;
            border-radius: 10px;
            height: 100%;
            transition: all 0.3s ease;
        }
        .contact-info-box:hover {
            background: linear-gradient(135deg, #fffaf0, #fff);
            transform: translateY(-5px);
        }
        .contact-info-box i {
            font-size: 2.5rem;
            color: var(--primary-gold);
            margin-bottom: 20px;
        }
        footer {
            background: var(--dark-bg);
            color: var(--text-light);
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: var(--primary-gold);
        }
        .flink {
            display: inline-block;
            background: var(--light-bg);
            padding: 10px 25px;
            margin: 5px 10px;
            border-radius: 5px;
            text-decoration: none;
            color: var(--text-dark);
            transition: all 0.3s ease;
            border: 1px solid #eee;
        }
        .flink:hover {
            background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
            color: #000;
            transform: translateY(-3px);
        }
        .certification-badge {
            display: inline-block;
            background: rgba(212, 175, 55, 0.1);
            border: 1px solid var(--primary-gold);
            padding: 5px 15px;
            border-radius: 20px;
            margin: 5px;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 70vh;
                text-align: center;
            }
            .section-title::after {
                left: 50%;
                transform: translateX(-50%);
            }
            .navbar-nav {
                text-align: center;
                background: rgba(10,10,10,0.95);
                padding: 20px;
                border-radius: 10px;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-gold);
            color: #000;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            transition: all 0.3s ease;
        }
        .back-to-top.active {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--secondary-gold);
        }