:root {
            --primary-color: #1a56db;
            --secondary-color: #0e9f6e;
            --accent-color: #e74694;
            --light-color: #f8fafc;
            --dark-color: #1f2937;
            --text-color: #374151;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            padding: 0.5rem 1.2rem !important;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.9) 0%, rgba(14, 159, 110, 0.85) 100%), url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
            background-size: cover;
            padding: 8rem 0;
            color: white;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .service-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: all 0.4s ease;
            border: 1px solid #e5e7eb;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(26, 86, 219, 0.1);
            border-color: var(--primary-color);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .stats-card {
            text-align: center;
            padding: 2rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .team-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
        }
        .team-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .team-img {
            height: 280px;
            object-fit: cover;
            width: 100%;
        }
        .flink {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            background: white;
            border-radius: 8px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            border: 1px solid #e5e7eb;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .footer {
            background: var(--dark-color);
            color: #d1d5db;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #d1d5db;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
        }
        .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: 0.8rem;
            transition: all 0.3s ease;
        }
        .social-icons a:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border: none;
            padding: 0.8rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 86, 219, 0.3);
        }
        .testimonial-card {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-left: 4px solid var(--primary-color);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(26, 86, 219, 0.05);
            color: var(--primary-color);
            font-weight: 600;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        .process-step {
            position: relative;
            padding-left: 3rem;
            margin-bottom: 2.5rem;
        }
        .process-step::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 2rem;
            height: 2rem;
            background: var(--primary-color);
            border-radius: 50%;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        .step-1::before { content: '1'; }
        .step-2::before { content: '2'; }
        .step-3::before { content: '3'; }
        .step-4::before { content: '4'; }
        .step-5::before { content: '5'; }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 86, 219, 0.25);
        }