:root {
            --primary-color: #d62d20;
            --secondary-color: #2c3e50;
            --accent-color: #f39c12;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--secondary-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-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            margin: 0 0.5rem;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--primary-color);
        }
        .hero {
            background: linear-gradient(135deg, rgba(214, 45, 32, 0.9) 0%, rgba(44, 62, 80, 0.9) 100%), url('https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 10rem 0;
            text-align: center;
        }
        .hero h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #b3241a;
            border-color: #b3241a;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(214, 45, 32, 0.2);
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--primary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        .service-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            height: 100%;
            background: white;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), #ff6b6b);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: -40px auto 20px;
            color: white;
            font-size: 2rem;
            box-shadow: 0 8px 20px rgba(214, 45, 32, 0.3);
        }
        .case-study {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 2rem;
        }
        .case-study img {
            transition: var(--transition);
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .case-study:hover img {
            transform: scale(1.05);
        }
        .case-study-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            padding: 2rem;
            color: white;
            transform: translateY(20px);
            opacity: 0;
            transition: var(--transition);
        }
        .case-study:hover .case-study-overlay {
            transform: translateY(0);
            opacity: 1;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-member img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 1.5rem;
            border: 5px solid var(--light-color);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .news-card {
            border-left: 4px solid var(--primary-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
            transition: var(--transition);
        }
        .news-card:hover {
            border-left-color: var(--accent-color);
            padding-left: 2rem;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 2rem;
        }
        .contact-info-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(214, 45, 32, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            color: var(--primary-color);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
            color: #aaa;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: white;
            border-radius: 50px;
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
            border: 1px solid #eee;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 6rem 0;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .stats-counter {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .stats-label {
            font-size: 1.1rem;
            color: var(--secondary-color);
            font-weight: 600;
        }
        .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;
            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(--secondary-color);
            color: white;
        }