:root {
            --primary-color: #1a237e;
            --secondary-color: #ff6f00;
            --accent-color: #4fc3f7;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
        }
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--secondary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
            transition: all 0.4s ease;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark-text) !important;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #283593 100%);
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .hero-section p {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #e65c00;
            border-color: #e65c00;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        .section-padding {
            padding: 6rem 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 4rem;
        }
        .section-title h2 {
            font-size: 2.8rem;
            position: relative;
            display: inline-block;
            padding-bottom: 1rem;
        }
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .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;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 35, 126, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .service-card .icon-box {
            background-color: rgba(255, 111, 0, 0.1);
            color: var(--secondary-color);
        }
        .team-member {
            text-align: center;
        }
        .team-member img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            margin-bottom: 1.5rem;
        }
        .contact-info-box {
            background-color: var(--light-bg);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            height: 100%;
            transition: all 0.3s;
        }
        .contact-info-box:hover {
            background-color: 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;
        }
        .form-control {
            border-radius: 10px;
            padding: 0.9rem 1.2rem;
            border: 1px solid #dee2e6;
            transition: all 0.3s;
        }
        .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(79, 195, 247, 0.25);
        }
        .friendlink {
            background-color: var(--light-bg);
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            color: var(--dark-text);
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            border-radius: 50px;
            border: 1px solid #dee2e6;
            font-weight: 500;
            transition: all 0.3s;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        footer {
            background-color: #1a1a2e;
            color: #adb5bd;
            padding: 4rem 0 2rem;
        }
        footer a {
            color: #adb5bd;
        }
        footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid #2d3047;
            padding-top: 2rem;
            margin-top: 3rem;
            text-align: center;
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-title h2 {
                font-size: 2.2rem;
            }
            .section-padding {
                padding: 4rem 0;
            }
        }