:root {
            --primary-color: #8B1A1A;
            --secondary-color: #D4AF37;
            --dark-color: #1A1A1A;
            --light-color: #F5F5F5;
            --gray-color: #6C757D;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 26, 26, 0.85), rgba(139, 26, 26, 0.85)), url('https://images.unsplash.com/photo-1563013544-824ae1b704d3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0;
            position: relative;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 10px;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color) !important;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--secondary-color);
        }
        .service-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .auction-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .auction-item img {
            transition: transform 0.5s;
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .auction-item:hover img {
            transform: scale(1.05);
        }
        .auction-overlay {
            position: absolute;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            width: 100%;
            padding: 15px;
            transform: translateY(100%);
            transition: transform 0.3s;
        }
        .auction-item:hover .auction-overlay {
            transform: translateY(0);
        }
        .news-card {
            border-left: 4px solid var(--primary-color);
            transition: all 0.3s;
        }
        .news-card:hover {
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transform: translateX(5px);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px;
            background: var(--light-color);
            border-radius: 5px;
            transition: all 0.3s;
            color: var(--dark-color);
            text-decoration: none;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .contact-info i {
            color: var(--primary-color);
            width: 30px;
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding: 60px 0 20px;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            transition: all 0.3s;
            z-index: 999;
        }
        .back-to-top.active {
            opacity: 1;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0;
            }
            .display-4 {
                font-size: 2.2rem;
            }
        }