:root {
            --primary-color: #1a3a5f;
            --secondary-color: #2d5a8a;
            --accent-color: #4fc3f7;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --success-color: #28a745;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #444;
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98) !important;
            box-shadow: var(--shadow);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            padding: 0.5rem 1.2rem !important;
            color: var(--primary-color) !important;
            border-radius: 4px;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: white !important;
            background-color: var(--accent-color);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 10rem 0 8rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        .hero-section p.lead {
            font-size: 1.4rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        .section-padding {
            padding: 6rem 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--accent-color);
            margin-bottom: 1.5rem;
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            transform: scale(1.05);
        }
        .stats-box {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }
        .stats-box:hover {
            background: var(--accent-color);
            color: white;
        }
        .stats-box:hover h3, .stats-box:hover .stats-icon {
            color: white;
        }
        .stats-icon {
            font-size: 2.5rem;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .process-step {
            text-align: center;
            padding: 2rem;
            position: relative;
        }
        .step-number {
            width: 60px;
            height: 60px;
            background: var(--accent-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            font-weight: 800;
            margin: 0 auto 1.5rem;
        }
        footer {
            background-color: var(--primary-color);
            color: #ddd;
            padding-top: 4rem;
        }
        footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        footer h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--accent-color);
        }
        footer a {
            color: #bbb;
        }
        footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .flink {
            display: inline-block;
            background: rgba(255,255,255,0.05);
            padding: 0.5rem 1.2rem;
            margin: 0.3rem;
            border-radius: 4px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        .flink:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--accent-color);
            transform: translateY(-3px);
        }
        .copyright {
            background-color: rgba(0,0,0,0.2);
            padding: 1.5rem 0;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .contact-info li {
            margin-bottom: 1rem;
            display: flex;
            align-items: flex-start;
        }
        .contact-info i {
            color: var(--accent-color);
            margin-right: 1rem;
            margin-top: 0.3rem;
            font-size: 1.2rem;
        }
        .news-card {
            border-left: 4px solid var(--accent-color);
        }
        .team-member img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            border-radius: 12px 12px 0 0;
        }
        .team-member .card-body {
            padding: 1.5rem;
        }
        .form-control {
            border-radius: 8px;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            margin-bottom: 1.2rem;
        }
        .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(79, 195, 247, 0.25);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 7rem 0 5rem;
            }
            .section-padding {
                padding: 4rem 0;
            }
            .navbar-nav .nav-link {
                padding: 0.5rem 0 !important;
                margin: 0.2rem 0;
            }
        }