:root {
            --primary-color: #1a3a8f;
            --secondary-color: #f8b500;
            --accent-color: #00a8e8;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --success-color: #28a745;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 0.5rem;
            transition: color 0.3s;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: all 0.3s ease;
            transform: translateX(-50%);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 80%;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 58, 143, 0.9) 0%, rgba(0, 168, 232, 0.85) 100%), url('https://images.unsplash.com/photo-1556761175-b413da4baf72?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: var(--dark-color);
            font-weight: 600;
            padding: 0.8rem 2.2rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #e6a500;
            border-color: #e6a500;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .btn-outline-light {
            border-width: 2px;
            font-weight: 600;
            padding: 0.8rem 2.2rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .btn-outline-light:hover {
            background-color: white;
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 70px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .section-subtitle {
            color: #666;
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 3rem;
        }
        .service-card {
            background: white;
            border-radius: 10px;
            padding: 2.5rem 2rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            height: 100%;
            transition: all 0.3s ease;
            border-top: 4px solid transparent;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-top-color: var(--secondary-color);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 58, 143, 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 h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        .stats-section {
            background-color: var(--primary-color);
            color: white;
            padding: 4rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--secondary-color);
            margin-bottom: 0.5rem;
        }
        .stat-text {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .process-step {
            text-align: center;
            position: relative;
            padding: 0 1.5rem;
        }
        .step-number {
            width: 60px;
            height: 60px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 1.5rem;
            position: relative;
            z-index: 2;
        }
        .process-step::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 50%;
            width: 100%;
            height: 2px;
            background-color: #e0e0e0;
            z-index: 1;
        }
        .process-step:last-child::before {
            display: none;
        }
        .team-card {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s;
        }
        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .team-img {
            height: 280px;
            object-fit: cover;
            width: 100%;
        }
        .testimonial-card {
            background-color: white;
            border-radius: 10px;
            padding: 2.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            height: 100%;
            border-left: 4px solid var(--secondary-color);
        }
        .testimonial-text {
            font-style: italic;
            color: #555;
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }
        .client-logo {
            height: 50px;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .contact-info-box {
            background-color: white;
            border-radius: 10px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            text-align: center;
            height: 100%;
            transition: all 0.3s;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        .contact-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 58, 143, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .footer {
            background-color: #1a1a2e;
            color: #bbb;
            padding-top: 4rem;
        }
        .footer-heading {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background-color: var(--secondary-color);
        }
        .footer-link {
            color: #bbb;
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: color 0.3s;
        }
        .footer-link:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .copyright {
            background-color: #0f0f1a;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .flink {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.05);
            color: #bbb;
            padding: 0.5rem 1.2rem;
            border-radius: 4px;
            margin: 0 0.5rem 0.8rem 0;
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .flink:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border-color: var(--secondary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            color: var(--dark-color);
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 2rem;
            }
            .process-step::before {
                display: none;
            }
            .navbar-collapse {
                background-color: white;
                padding: 1rem;
                border-radius: 10px;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
                margin-top: 1rem;
            }
        }
        .form-control, .form-select {
            padding: 0.8rem 1rem;
            border-radius: 4px;
            border: 1px solid #ddd;
            margin-bottom: 1.2rem;
            transition: all 0.3s;
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 58, 143, 0.25);
        }
        .whatsapp-float {
            position: fixed;
            width: 60px;
            height: 60px;
            bottom: 30px;
            left: 30px;
            background-color: #25d366;
            color: white;
            border-radius: 50px;
            text-align: center;
            font-size: 30px;
            box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
        }
        .whatsapp-float:hover {
            background-color: #128c7e;
            transform: scale(1.1);
        }