:root {
            --primary-color: #1a365d;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.7;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1492144534655-ae79c964c9d7?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 150px 0 100px;
        }
        .navbar {
            background-color: rgba(26, 54, 93, 0.95);
            padding: 15px 0;
            transition: all 0.3s ease;
        }
        .navbar.scrolled {
            padding: 10px 0;
            background-color: var(--primary-color);
        }
        .nav-link {
            color: white !important;
            font-weight: 500;
            margin: 0 10px;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #c1121f;
            border-color: #c1121f;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .section-title {
            position: relative;
            margin-bottom: 60px;
            padding-bottom: 20px;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .card-hover {
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 32px;
        }
        .feature-box {
            padding: 30px;
            border-radius: 10px;
            background-color: white;
            height: 100%;
            transition: all 0.3s;
            border: 1px solid rgba(0,0,0,0.05);
        }
        .feature-box:hover {
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
            border-color: var(--accent-color);
        }
        .car-img-container {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            height: 250px;
        }
        .car-img-container img {
            transition: transform 0.5s;
            height: 100%;
            width: 100%;
            object-fit: cover;
        }
        .car-img-container:hover img {
            transform: scale(1.05);
        }
        .stats-counter {
            font-size: 48px;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .contact-info-box {
            background-color: var(--light-color);
            border-radius: 10px;
            padding: 30px;
            height: 100%;
            border-left: 5px solid var(--accent-color);
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding: 70px 0 20px;
        }
        .footer a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: var(--secondary-color);
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 50px;
            font-size: 14px;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 12px 25px;
            margin: 8px;
            border-radius: 50px;
            color: var(--dark-color);
            font-weight: 500;
            border: 2px solid transparent;
            transition: all 0.3s;
            text-decoration: none;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .flink:hover {
            border-color: var(--accent-color);
            color: var(--accent-color);
            transform: translateY(-3px);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--primary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 60px;
            }
            .section-title {
                margin-bottom: 40px;
            }
            .stats-counter {
                font-size: 36px;
            }
        }