:root {
            --primary-color: #1a237e;
            --secondary-color: #ff4081;
            --accent-color: #4caf50;
            --light-color: #f5f5f5;
            --dark-color: #212121;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
            line-height: 1.8;
        }
        .navbar {
            background-color: rgba(26, 35, 126, 0.95);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: white !important;
        }
        .nav-link {
            color: rgba(255,255,255,0.9) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .hero {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1511795409834-ef04bbd61622?ixlib=rb-4.0.3&auto=format&fit=crop&w=2069&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            font-weight: 700;
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            color: var(--primary-color);
            font-size: 2.5rem;
            position: relative;
            padding-bottom: 1rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        .service-card, .case-card, .team-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            background: #fff;
        }
        .service-card:hover, .case-card:hover, .team-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: 1.5rem;
        }
        .case-card img, .team-card img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .case-card:hover img, .team-card:hover img {
            transform: scale(1.05);
        }
        .news-item {
            border-left: 4px solid var(--primary-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
            transition: border-color 0.3s;
        }
        .news-item:hover {
            border-left-color: var(--secondary-color);
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s ease;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .contact-info i {
            color: var(--primary-color);
            margin-right: 10px;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            background: white;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        footer {
            background-color: var(--dark-color);
            color: #ccc;
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: white;
        }
        .social-icons a {
            display: inline-block;
            width: 40px;
            height: 40px;
            line-height: 40px;
            text-align: center;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 10px;
            transition: background 0.3s;
        }
        .social-icons a:hover {
            background: var(--secondary-color);
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }