:root {
            --primary-blue: #0066cc;
            --dark-blue: #004d99;
            --light-blue: #e6f2ff;
            --accent-orange: #ff6600;
            --gray-bg: #f8f9fa;
            --dark-gray: #333;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-gray);
            line-height: 1.7;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 80, 180, 0.85), rgba(0, 40, 100, 0.9)), url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .section-title {
            position: relative;
            padding-bottom: 20px;
            margin-bottom: 50px;
            font-weight: 600;
            color: var(--dark-blue);
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .service-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
            height: 100%;
            box-shadow: 0 8px 25px rgba(0, 51, 153, 0.08);
        }
        .service-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 15px 35px rgba(0, 51, 153, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 28px;
            color: white;
        }
        .btn-primary-custom {
            background: linear-gradient(90deg, var(--primary-blue), var(--dark-blue));
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background: linear-gradient(90deg, var(--dark-blue), var(--primary-blue));
            transform: scale(1.05);
        }
        .flink {
            display: inline-block;
            background: var(--gray-bg);
            padding: 10px 20px;
            border-radius: 8px;
            margin: 5px;
            color: var(--dark-blue);
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-blue);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background: linear-gradient(135deg, #1a2a3a, #0d1b2a);
            color: #e0e0e0;
            padding-top: 60px;
        }
        .footer-links a {
            color: #b0b0b0;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .contact-info i {
            width: 30px;
            color: var(--accent-orange);
        }
        .case-study-img {
            height: 240px;
            object-fit: cover;
            border-radius: 8px 8px 0 0;
        }
        .news-card {
            border-left: 4px solid var(--primary-blue);
            transition: all 0.3s;
        }
        .news-card:hover {
            border-left-color: var(--accent-orange);
            background-color: #f8fbff;
        }
        .sticky-nav {
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s;
        }
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-orange), var(--primary-blue));
            z-index: 1030;
            width: 0%;
            transition: width 0.3s;
        }
        .partner-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.4s;
        }
        .partner-logo:hover {
            filter: grayscale(0);
            opacity: 1;
            transform: scale(1.05);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            background: linear-gradient(90deg, var(--primary-blue), var(--accent-orange));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .accordion-button:not(.collapsed) {
            background-color: var(--light-blue);
            color: var(--dark-blue);
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 60px;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }