:root {
            --primary: #1a56db;
            --secondary: #0e9f6e;
            --dark: #1f2937;
            --light: #f9fafb;
            --gray: #6b7280;
        }
        body {
            font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark) !important;
            margin: 0 0.5rem;
            position: relative;
            padding: 0.5rem 0 !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width 0.3s ease;
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.1) 0%, rgba(14, 159, 110, 0.05) 100%);
            padding: 6rem 0 5rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.08) 0%, transparent 70%);
            z-index: 0;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--gray);
            margin-bottom: 2rem;
            max-width: 700px;
        }
        .btn-primary-custom {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border: none;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(26, 86, 219, 0.2);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(26, 86, 219, 0.3);
            color: white;
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--dark);
            text-align: center;
        }
        .section-subtitle {
            color: var(--gray);
            text-align: center;
            max-width: 700px;
            margin: 0 auto 3rem;
            font-size: 1.1rem;
        }
        .icon-box {
            width: 80px;
            height: 80px;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.1) 0%, rgba(14, 159, 110, 0.05) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            transition: transform 0.3s ease;
        }
        .icon-box i {
            font-size: 2.2rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .feature-card, .service-card, .case-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: all 0.4s ease;
            background: white;
            height: 100%;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        }
        .feature-card:hover, .service-card:hover, .case-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        .service-card .card-body {
            padding: 2rem;
        }
        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stats-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 5rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s ease;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .news-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .news-date {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .contact-info-box {
            padding: 2rem;
            border-radius: 15px;
            background: white;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            height: 100%;
            transition: all 0.3s ease;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            border-radius: 15px;
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.1) 0%, rgba(14, 159, 110, 0.05) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .contact-icon i {
            font-size: 1.5rem;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        footer {
            background-color: var(--dark);
            color: #d1d5db;
            padding-top: 4rem;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #9ca3af;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            color: #9ca3af;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.3s ease;
            margin: 0.3rem;
            font-size: 0.9rem;
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
        }
        .copyright {
            border-top: 1px solid #374151;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
            color: #9ca3af;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 4px 15px rgba(26, 86, 219, 0.3);
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            color: white;
            transform: translateY(-5px);
        }