:root {
            --primary-color: #8B4513;
            --secondary-color: #D2691E;
            --accent-color: #F4A460;
            --light-color: #FFF8DC;
            --dark-color: #333;
            --gray-color: #f8f9fa;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: var(--dark-color);
            line-height: 1.8;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: bold;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .nav-link {
            color: var(--dark-color) !important;
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('https://images.unsplash.com/photo-1518837695005-2083093ee35b?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.5);
        }
        .section-title {
            color: var(--primary-color);
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 10px;
            margin-bottom: 30px;
            display: inline-block;
        }
        .service-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            background: var(--gray-color);
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        .testimonial-carousel .carousel-item {
            padding: 40px;
            background: var(--light-color);
            border-radius: 15px;
        }
        .flink {
            display: inline-block;
            padding: 10px 20px;
            margin: 5px;
            background: var(--light-color);
            border: 1px solid #ddd;
            border-radius: 8px;
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 40px 0 20px;
        }
        footer a {
            color: var(--accent-color);
            text-decoration: none;
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .btn-custom {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            transition: background-color 0.3s;
        }
        .btn-custom:hover {
            background-color: var(--secondary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }