:root {
            --primary-color: #9c27b0;
            --secondary-color: #673ab7;
            --accent-color: #e91e63;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
        }
        body {
            font-family: "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
        }
        .navbar {
            background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            padding: 0.8rem 0;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: white !important;
            letter-spacing: 1px;
        }
        .nav-link {
            color: rgba(255,255,255,0.85) !important;
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: all 0.3s ease;
            border-radius: 4px;
            margin: 0 2px;
        }
        .nav-link:hover, .nav-link.active {
            color: white !important;
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 26, 46, 0.85), rgba(156, 39, 176, 0.8)), url('https://images.unsplash.com/photo-1511795409834-ef04bbd61622?ixlib=rb-4.0.3&auto=format&fit=crop&w=2069&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 6rem 0;
            margin-bottom: 3rem;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
        }
        .hero-subtitle {
            font-size: 1.4rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(156, 39, 176, 0.3);
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
            color: var(--dark-color);
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-color), var(--accent-color));
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            margin-bottom: 1.5rem;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-top {
            transform: scale(1.05);
        }
        .card-title {
            color: var(--dark-color);
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        .badge-custom {
            background: linear-gradient(to right, var(--accent-color), #ff4081);
            color: white;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.8rem;
        }
        .video-container {
            position: relative;
            padding-bottom: 56.25%;
            height: 0;
            overflow: hidden;
            border-radius: 12px;
            margin-bottom: 1.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none;
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
            box-shadow: 0 8px 20px rgba(156, 39, 176, 0.3);
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 4rem 0;
            border-top: 1px solid #eee;
            border-bottom: 1px solid #eee;
        }
        .flink {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            margin: 0.5rem;
            background-color: white;
            border-radius: 8px;
            color: var(--dark-color);
            font-weight: 500;
            transition: all 0.3s ease;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            border: 1px solid #e0e0e0;
            text-decoration: none;
        }
        .flink:hover {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(156, 39, 176, 0.2);
            text-decoration: none;
        }
        footer {
            background-color: var(--dark-color);
            color: rgba(255,255,255,0.8);
            padding: 3rem 0 1.5rem;
        }
        .footer-title {
            color: white;
            margin-bottom: 1.5rem;
            font-weight: 600;
            font-size: 1.2rem;
        }
        .footer-links a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            display: block;
            margin-bottom: 0.8rem;
            transition: all 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
        }
        .pagination-custom .page-link {
            color: var(--primary-color);
            border: 1px solid #e0e0e0;
            margin: 0 3px;
            border-radius: 8px;
            font-weight: 500;
        }
        .pagination-custom .page-link:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .pagination-custom .page-item.active .page-link {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            border-color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .hero-subtitle {
                font-size: 1.1rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        .content-text {
            text-align: justify;
            font-size: 1.05rem;
            margin-bottom: 1.5rem;
        }
        .keyword-tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background-color: rgba(156, 39, 176, 0.1);
            color: var(--primary-color);
            border-radius: 4px;
            margin: 0.2rem;
            font-size: 0.9rem;
        }