:root {
            --primary-color: #1a237e;
            --secondary-color: #4fc3f7;
            --accent-color: #00c853;
            --light-bg: #f5f7fa;
            --dark-text: #212121;
            --light-text: #757575;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding: 1rem 0;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-text);
            margin: 0 0.5rem;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(26, 35, 126, 0.9)), url('https://images.unsplash.com/photo-1611974789855-9c2a0a7236a3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2.5rem;
            max-width: 700px;
        }
        .btn-primary-custom {
            background-color: var(--accent-color);
            border: none;
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s;
        }
        .btn-primary-custom:hover {
            background-color: #00b248;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 200, 83, 0.3);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            margin-bottom: 3rem;
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .card-hover {
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .icon-box {
            width: 80px;
            height: 80px;
            background-color: rgba(79, 195, 247, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--secondary-color);
            font-size: 2rem;
        }
        .feature-list li {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--accent-color);
            font-weight: bold;
        }
        .team-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 1.5rem;
            transition: transform 0.3s;
        }
        .team-img:hover {
            transform: scale(1.03);
        }
        .contact-info-box {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: 12px;
            margin-bottom: 2rem;
            transition: background-color 0.3s;
        }
        .contact-info-box:hover {
            background-color: #e8f4fd;
        }
        .contact-info-box i {
            font-size: 2rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1rem;
            background-color: var(--light-bg);
            border-radius: 8px;
            margin: 0.5rem;
            color: var(--dark-text);
            text-decoration: none;
            transition: all 0.3s;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
            padding: 3rem 0 1.5rem;
        }
        .footer a {
            color: #bbdefb;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 2rem;
            }
        }