:root {
            --primary-color: #1a237e;
            --secondary-color: #ff4081;
            --accent-color: #00bcd4;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            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, 35, 126, 0.85), rgba(26, 35, 126, 0.9)), url('https://images.unsplash.com/photo-1511379938547-c1f69419868d?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0;
            position: relative;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 6rem 0;
            }
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
            text-align: center;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            border-radius: 2px;
        }
        .card-hover {
            transition: all 0.3s ease;
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 1.8rem;
            transition: all 0.3s ease;
        }
        .feature-card:hover .icon-box {
            background: var(--secondary-color);
            transform: scale(1.1);
        }
        .btn-primary-custom {
            background: var(--primary-color);
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 64, 129, 0.3);
        }
        .btn-secondary-custom {
            background: var(--secondary-color);
            border: none;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-secondary-custom:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(26, 35, 126, 0.3);
        }
        .news-card {
            border-left: 4px solid var(--accent-color);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            border-left-color: var(--secondary-color);
            background-color: #f8f9fa;
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: #f1f3ff;
            border-radius: 50px;
            color: var(--primary-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e0e0e0;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 35, 126, 0.2);
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding-top: 3rem;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: var(--accent-color);
        }
        .social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 10px;
            transition: all 0.3s ease;
        }
        .social-icons a:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }
        .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;
            font-size: 1.2rem;
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        .stats-box {
            background: linear-gradient(135deg, var(--primary-color), #303f9f);
            color: white;
            padding: 2rem;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        .stats-number {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .team-member img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 50%;
            margin-bottom: 1rem;
            border: 5px solid #f1f1f1;
        }
        .contact-info-box {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            border-left: 4px solid var(--accent-color);
            margin-bottom: 2rem;
            transition: all 0.3s ease;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
        }
        .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.25rem rgba(0, 188, 212, 0.25);
        }