:root {
            --primary-color: #1a365d;
            --secondary-color: #e63946;
            --accent-color: #f4a261;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            color: var(--primary-color);
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .service-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
            height: 300px;
        }
        .portfolio-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(26, 54, 93, 0.9));
            color: white;
            padding: 2rem;
            transform: translateY(100%);
            transition: var(--transition);
        }
        .portfolio-item:hover .portfolio-overlay {
            transform: translateY(0);
        }
        .portfolio-item:hover .portfolio-img {
            transform: scale(1.05);
        }
        .team-member {
            text-align: center;
            margin-bottom: 30px;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 1.5rem;
            border: 5px solid var(--light-color);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 1.5rem;
        }
        .contact-icon {
            background: var(--primary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
            flex-shrink: 0;
        }
        .flink {
            display: inline-block;
            background: var(--light-color);
            padding: 10px 20px;
            border-radius: 30px;
            margin: 5px 10px;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--secondary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #c1121f;
            border-color: #c1121f;
            transform: translateY(-3px);
        }
        .timeline {
            position: relative;
            padding-left: 30px;
            margin-top: 30px;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background-color: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding-left: 30px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-color);
        }
        .stats-counter {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        .stats-label {
            font-size: 1.1rem;
            color: #6c757d;
        }
        .testimonial-card {
            background: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            margin: 15px;
            height: 100%;
        }
        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
            line-height: 1.8;
        }
        .client-logo {
            height: 60px;
            object-fit: contain;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .content-section {
            line-height: 1.8;
            font-size: 1.1rem;
        }
        .content-section p {
            margin-bottom: 1.5rem;
        }