:root {
            --primary-color: #0a2c5e;
            --secondary-color: #d4af37;
            --accent-color: #e63946;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --transition: all 0.3s ease-in-out;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(10, 44, 94, 0.95);
            padding: 1rem 0;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: white !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.85) !important;
            font-weight: 500;
            margin: 0 0.5rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: 0;
            left: 50%;
            background-color: var(--secondary-color);
            transition: var(--transition);
            transform: translateX(-50%);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 80%;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 44, 94, 0.85), rgba(10, 44, 94, 0.9)), url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 10rem 0;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
            max-width: 700px;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border: none;
            color: var(--primary-color);
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            border-radius: 30px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #b8941f;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        .section-padding {
            padding: 6rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 60%;
            height: 4px;
            background-color: var(--secondary-color);
            bottom: -10px;
            left: 0;
        }
        .section-subtitle {
            color: #666;
            font-size: 1.1rem;
            max-width: 700px;
            margin-bottom: 3rem;
        }
        .service-card {
            background-color: white;
            border-radius: 12px;
            padding: 2.5rem 2rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            height: 100%;
            transition: var(--transition);
            border-top: 4px solid transparent;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
            border-top-color: var(--secondary-color);
        }
        .service-icon {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .stats-section {
            background-color: var(--primary-color);
            color: white;
            padding: 4rem 0;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--secondary-color);
        }
        .case-study-card {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            height: 100%;
        }
        .case-study-card:hover {
            transform: scale(1.03);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .case-study-img {
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .team-card {
            text-align: center;
            padding: 2rem;
            border-radius: 12px;
            background-color: white;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }
        .team-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
        }
        .team-img {
            width: 160px;
            height: 160px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid #f0f0f0;
            margin-bottom: 1.5rem;
        }
        .contact-info-box {
            background-color: #f8f9fa;
            padding: 2.5rem;
            border-radius: 12px;
            border-left: 5px solid var(--secondary-color);
            margin-bottom: 2rem;
        }
        .contact-icon {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .footer {
            background-color: var(--primary-color);
            color: rgba(255, 255, 255, 0.85);
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.75);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .footer-title {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            width: 50px;
            height: 3px;
            background-color: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        .copyright {
            background-color: rgba(0, 0, 0, 0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            background-color: white;
            padding: 0.6rem 1.5rem;
            margin: 0.5rem;
            border-radius: 30px;
            border: 1px solid #e0e0e0;
            color: #555;
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--secondary-color);
            color: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: #b8941f;
            transform: translateY(-5px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 4rem 0;
            }
            .section-title {
                font-size: 2rem;
            }
            .navbar-nav {
                text-align: center;
                background-color: var(--primary-color);
                padding: 1rem;
                border-radius: 10px;
                margin-top: 1rem;
            }
        }