:root {
            --primary-color: #1a5fb4;
            --secondary-color: #2ecc71;
            --dark-color: #2c3e50;
            --light-color: #f8f9fa;
            --accent-color: #e74c3c;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #3498db 100%);
            color: white;
            padding: 120px 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;base64,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');
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--primary-color);
        }
        .service-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 1.8rem;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .portfolio-img {
            transition: transform 0.5s;
            height: 250px;
            object-fit: cover;
            width: 100%;
        }
        .portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 95, 180, 0.9);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            transition: opacity 0.5s;
            padding: 20px;
            text-align: center;
            color: white;
        }
        .portfolio-item:hover .portfolio-overlay {
            opacity: 1;
        }
        .portfolio-item:hover .portfolio-img {
            transform: scale(1.1);
        }
        .team-member {
            text-align: center;
            margin-bottom: 30px;
        }
        .team-img {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid #f1f1f1;
            margin-bottom: 20px;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            margin-right: 15px;
            flex-shrink: 0;
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 95, 180, 0.25);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #154a8a;
            border-color: #154a8a;
            transform: translateY(-2px);
        }
        footer {
            background-color: var(--dark-color);
            color: #ddd;
            padding-top: 60px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
            margin-bottom: 8px;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        .social-icons a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            color: white;
            margin-right: 10px;
            transition: all 0.3s;
        }
        .social-icons a:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .friendlink-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
        }
        .flink {
            background: white;
            padding: 10px 25px;
            border-radius: 50px;
            text-decoration: none;
            color: var(--dark-color);
            border: 1px solid #eaeaea;
            transition: all 0.3s;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .stats-counter {
            text-align: center;
            padding: 30px 15px;
            background: #f9f9f9;
            border-radius: 10px;
            margin-bottom: 30px;
            transition: transform 0.3s;
        }
        .stats-counter:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }
        .counter-value {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            display: block;
            line-height: 1;
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .section-title {
                margin-bottom: 30px;
            }
            .counter-value {
                font-size: 2.5rem;
            }
            .team-img {
                width: 150px;
                height: 150px;
            }
        }
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
        }
        .timeline-content {
            padding: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 6px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        @media (max-width: 768px) {
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(26, 95, 180, 0.1);
            color: var(--primary-color);
            font-weight: 600;
        }
        .accordion-button:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 95, 180, 0.25);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            transition: all 0.3s;
        }
        .back-to-top.show {
            opacity: 1;
        }
        .back-to-top:hover {
            background: #154a8a;
            color: white;
            transform: translateY(-5px);
        }
        .news-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .news-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .news-date {
            color: var(--primary-color);
            font-weight: 600;
            font-size: 0.9rem;
        }