:root {
            --primary-blue: #0d2b5c;
            --secondary-blue: #1e4a8b;
            --accent-red: #c8102e;
            --accent-green: #0a7e3a;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
        }
        body {
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--primary-blue);
        }
        .hero-section {
            background: linear-gradient(rgba(13, 43, 92, 0.85), rgba(13, 43, 92, 0.9)), url('https://images.unsplash.com/photo-1556056504-5c7696c4c28d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 100px 0;
            position: relative;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            color: var(--primary-blue);
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 70px;
            height: 4px;
            background: var(--accent-red);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 10px;
            overflow: hidden;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
        }
        .prediction-card {
            border-top: 5px solid var(--accent-red);
            background: linear-gradient(to bottom right, #fff, #f0f7ff);
        }
        .analysis-card {
            border-top: 5px solid var(--accent-green);
        }
        .flag-icon {
            width: 80px;
            height: 80px;
            object-fit: contain;
            margin: 0 auto 15px;
            display: block;
        }
        .vs-text {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-red);
            margin: 0 20px;
        }
        .stats-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-blue);
            line-height: 1;
        }
        .stats-label {
            font-size: 0.9rem;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--secondary-blue);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin-bottom: 20px;
        }
        .article-img {
            height: 220px;
            object-fit: cover;
            width: 100%;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--secondary-blue);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background: var(--accent-red);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--secondary-blue);
        }
        .footer {
            background: var(--primary-blue);
            color: #ddd;
            padding-top: 60px;
        }
        .footer a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .flink {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            padding: 12px 20px;
            margin: 5px;
            display: inline-block;
            transition: all 0.3s;
            color: #ccc;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .flink:hover {
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .btn-custom {
            background: var(--accent-red);
            color: white;
            padding: 10px 25px;
            border-radius: 30px;
            border: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-custom:hover {
            background: #a50e27;
            color: white;
            transform: scale(1.05);
        }
        .form-control:focus {
            border-color: var(--secondary-blue);
            box-shadow: 0 0 0 0.25rem rgba(30, 74, 139, 0.25);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            .vs-text {
                font-size: 2rem;
                margin: 20px 0;
            }
            .stats-number {
                font-size: 2.2rem;
            }
        }