:root {
            --primary-color: #1a6dcc;
            --secondary-color: #ff6b35;
            --dark-color: #1e2a3a;
            --light-color: #f8f9fa;
            --success-color: #28a745;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand i {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(30, 42, 58, 0.85), rgba(30, 42, 58, 0.9)), url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
            color: white;
            padding: 150px 0 100px;
        }
        .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;
            padding-bottom: 1rem;
            text-align: center;
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
        }
        .service-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            background: white;
            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 {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .data-stat {
            background: linear-gradient(135deg, var(--primary-color), #0d4d9e);
            color: white;
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            transition: transform 0.3s ease;
        }
        .data-stat:hover {
            transform: scale(1.03);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            display: block;
            line-height: 1;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid #eee;
            margin: 0 auto 1.5rem;
            transition: border-color 0.3s ease;
        }
        .team-member:hover .team-img {
            border-color: var(--secondary-color);
        }
        .news-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .news-card:hover {
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .news-card img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .news-date {
            color: var(--secondary-color);
            font-weight: 600;
        }
        .contact-info-box {
            background: var(--light-color);
            border-radius: 10px;
            padding: 2rem;
            height: 100%;
            border-left: 5px solid var(--primary-color);
        }
        .contact-icon {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: #f1f5f9;
            border-radius: 30px;
            color: #333;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background: var(--dark-color);
            color: #aaa;
            padding-top: 3rem;
        }
        footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .footer-bottom {
            background: #151f2c;
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #0d4d9e;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 109, 204, 0.3);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 10px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            background-color: #e55a2b;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }
        .progress-ring {
            position: relative;
            width: 120px;
            height: 120px;
            margin: 0 auto 1rem;
        }
        .progress-ring__circle {
            transform: rotate(-90deg);
            transform-origin: 50% 50%;
        }
        .progress-ring__circle-bg {
            fill: none;
            stroke: #eee;
            stroke-width: 8;
        }
        .progress-ring__circle-progress {
            fill: none;
            stroke: var(--success-color);
            stroke-width: 8;
            stroke-linecap: round;
            transition: stroke-dashoffset 0.5s ease;
        }
        .progress-value {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--dark-color);
        }