:root {
            --primary-color: #1a56db;
            --secondary-color: #0ea5e9;
            --dark-color: #111827;
            --light-color: #f8fafc;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .nav-link {
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(26, 86, 219, 0.1);
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.9) 0%, rgba(14, 165, 233, 0.8) 100%), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-4.0.3&auto=format&fit=crop&w=2072&q=80') center/cover no-repeat;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-title {
            position: relative;
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 3rem;
            padding-bottom: 1rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: var(--transition);
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(26, 86, 219, 0.15);
        }
        .icon-wrapper {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .service-icon, .feature-icon {
            font-size: 1.8rem;
            color: white;
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 4px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(26, 86, 219, 0.3);
        }
        .process-step {
            position: relative;
            padding: 2rem;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            text-align: center;
            transition: var(--transition);
        }
        .process-step:hover {
            box-shadow: 0 10px 25px rgba(26, 86, 219, 0.1);
        }
        .step-number {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .footer {
            background-color: var(--dark-color);
            color: #d1d5db;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #d1d5db;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .copyright {
            border-top: 1px solid #374151;
            padding-top: 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        .flink {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1.2rem;
            margin: 0.3rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .flink:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        .news-card {
            border-left: 4px solid transparent;
            transition: var(--transition);
        }
        .news-card:hover {
            border-left-color: var(--primary-color);
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            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: 1.2rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            transform: translateY(-5px);
        }
        .team-member {
            text-align: center;
            padding: 1.5rem;
            border-radius: 10px;
            transition: var(--transition);
        }
        .team-member:hover {
            background-color: rgba(26, 86, 219, 0.05);
        }
        .team-img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 1.5rem;
            border: 5px solid #e5e7eb;
            transition: var(--transition);
        }
        .team-member:hover .team-img {
            border-color: var(--primary-color);
        }
        .counter-item {
            text-align: center;
            padding: 2rem;
        }
        .counter-number {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 0.5rem;
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
            padding: 1rem;
            max-width: 180px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: #e5e7eb;
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }
        @media (max-width: 768px) {
            .timeline::after {
                left: 31px;
            }
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
        }
        @media (max-width: 768px) {
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
        }
        .timeline-content {
            padding: 20px;
            background-color: white;
            border-radius: 6px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 4px solid var(--primary-color);
            border-radius: 50%;
            top: 15px;
            z-index: 1;
        }
        .timeline-item:nth-child(odd)::after {
            right: -12px;
        }
        .timeline-item:nth-child(even)::after {
            left: -12px;
        }
        @media (max-width: 768px) {
            .timeline-item::after {
                left: 21px;
            }
        }
        .contact-info-item {
            padding: 1.5rem;
            border-radius: 8px;
            background-color: #f8fafc;
            transition: var(--transition);
            height: 100%;
        }
        .contact-info-item:hover {
            background-color: white;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.5rem;
        }