:root {
            --primary-color: #1a6a9e;
            --secondary-color: #e63946;
            --accent-color: #2a9d8f;
            --dark-color: #264653;
            --light-color: #f8f9fa;
            --text-color: #333;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: var(--shadow);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .nav-link {
            font-weight: 500;
            color: var(--dark-color);
            padding: 0.5rem 1.2rem;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
            transform: translateY(-2px);
        }
        .hero {
            background: linear-gradient(rgba(26, 106, 158, 0.85), rgba(38, 70, 83, 0.9)), url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=2071&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0 6rem;
            clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
        }
        .hero h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        .section {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .feature-card {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            background: white;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.15);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .prediction-card {
            border-left: 5px solid var(--secondary-color);
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 0 10px 10px 0;
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }
        .prediction-card:hover {
            background: #e9ecef;
        }
        .team-member {
            text-align: center;
            margin-bottom: 2rem;
        }
        .team-member img {
            width: 150px;
            height: 150px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid var(--light-color);
            box-shadow: var(--shadow);
            margin-bottom: 1rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            background: var(--light-color);
            border-radius: 30px;
            color: var(--dark-color);
            text-decoration: none;
            margin: 0.5rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: scale(1.05);
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .news-card {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: scale(1.02);
        }
        .news-card img {
            height: 200px;
            object-fit: cover;
        }
        .btn-primary-custom {
            background: var(--primary-color);
            border-color: var(--primary-color);
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 30px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background: var(--dark-color);
            border-color: var(--dark-color);
            transform: translateY(-3px);
        }
        .contact-info {
            background: var(--light-color);
            padding: 2rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .contact-info i {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-right: 1rem;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--dark-color);
            font-weight: 600;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(26, 106, 158, 0.1);
            color: var(--primary-color);
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
            border-left: 3px solid var(--accent-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            width: 15px;
            height: 15px;
            background: var(--accent-color);
            border-radius: 50%;
            left: -2.5rem;
            top: 0.3rem;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .section {
                padding: 3rem 0;
            }
            .navbar-brand {
                font-size: 1.5rem;
            }
        }