:root {
            --primary-color: #1a6bdf;
            --secondary-color: #0d3d8c;
            --accent-color: #ff9800;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --gray-color: #6c757d;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--secondary-color);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            background-color: rgba(26, 107, 223, 0.1);
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 8rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
        }
        .btn-primary {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #e68900;
            border-color: #e68900;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 152, 0, 0.3);
        }
        .section-title {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            margin: 15px auto;
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            height: 100%;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .card-body {
            padding: 2rem;
        }
        .card-title {
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 1.5rem;
        }
        .about-img {
            border-radius: 12px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        .about-img:hover {
            transform: scale(1.03);
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-member img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid var(--light-color);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
            transition: all 0.3s ease;
        }
        .team-member img:hover {
            border-color: var(--accent-color);
            transform: scale(1.05);
        }
        .contact-info-box {
            background: var(--light-color);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            height: 100%;
            transition: all 0.3s ease;
        }
        .contact-info-box:hover {
            background: white;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .contact-info-box i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .friendlink {
            background: var(--light-color);
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            background: white;
            border-radius: 50px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border: 1px solid #eaeaea;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(26, 107, 223, 0.2);
            border-color: var(--primary-color);
        }
        footer {
            background: var(--dark-color);
            color: #ccc;
            padding: 4rem 0 2rem;
        }
        footer a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .footer-links {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            margin-right: 10px;
            color: white;
            transition: all 0.3s ease;
        }
        .social-icons a:hover {
            background: var(--accent-color);
            transform: translateY(-5px);
        }
        .copyright {
            border-top: 1px solid #555;
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 5rem 0;
            }
            .section-title {
                margin-bottom: 2.5rem;
            }
            .card-body {
                padding: 1.5rem;
            }
        }
        .content-heavy {
            font-size: 1.1rem;
            color: #444;
            margin-bottom: 2rem;
        }
        .content-heavy h3 {
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
        }
        .content-heavy p {
            margin-bottom: 1.5rem;
        }