:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --light-color: #f8fafc;
            --dark-color: #0f172a;
            --gray-color: #64748b;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .hero-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #0c4a6e 100%);
            color: white;
            padding: 6rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
            background-size: 30px 30px;
            opacity: 0.3;
            animation: float 20s linear infinite;
        }
        @keyframes float {
            0% { transform: translate(0, 0) rotate(0deg); }
            100% { transform: translate(-30px, -30px) rotate(360deg); }
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95) !important;
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.5rem;
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-color) !important;
            transition: color 0.3s;
            margin: 0 5px;
            position: relative;
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: all 0.3s;
            transform: translateX(-50%);
        }
        .nav-link:hover::after {
            width: 80%;
        }
        .section-title {
            color: var(--primary-color);
            font-weight: 700;
            margin-bottom: 2rem;
            position: relative;
            padding-bottom: 10px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--secondary-color);
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            overflow: hidden;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), #2563eb);
            border: none;
            border-radius: 8px;
            padding: 10px 25px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background: linear-gradient(to right, #1e40af, var(--primary-color));
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(30, 58, 138, 0.3);
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
            box-shadow: 0 5px 15px rgba(30, 58, 138, 0.2);
        }
        footer {
            background: var(--dark-color);
            color: white;
        }
        .friendlink a.flink {
            display: inline-block;
            background: white;
            padding: 10px 20px;
            margin: 5px;
            border-radius: 8px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            border: 2px solid #e2e8f0;
            transition: all 0.3s;
        }
        .friendlink a.flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
        }
        .news-item {
            border-left: 4px solid var(--accent-color);
            padding-left: 15px;
            margin-bottom: 1.5rem;
        }
        .contact-info i {
            color: var(--primary-color);
            width: 30px;
        }
        .sticky-top {
            top: 20px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 4rem 0;
            }
            .display-4 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .content-rich {
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .content-rich h3 {
            color: var(--primary-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .content-rich p {
            margin-bottom: 1.2rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
            border-left: 5px solid var(--primary-color);
            padding: 20px;
            border-radius: 0 10px 10px 0;
            margin: 2rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--primary-color);
        }