:root {
            --primary-color: #9c27b0;
            --secondary-color: #673ab7;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
            --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 26, 46, 0.85), rgba(103, 58, 183, 0.8)), url('https://images.unsplash.com/photo-1531297484001-80022131f5a1?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0 80px;
            margin-top: 56px;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            text-align: center;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--gradient);
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px 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);
        }
        .badge-custom {
            background: var(--gradient);
            color: white;
        }
        .btn-primary {
            background: var(--gradient);
            border: none;
            padding: 10px 25px;
            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);
        }
        .video-play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 70px;
            height: 70px;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 28px;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .video-play-btn:hover {
            background: white;
            color: var(--secondary-color);
            transform: translate(-50%, -50%) scale(1.1);
        }
        .stats-box {
            background: white;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        footer {
            background-color: var(--dark-color);
            color: #ccc;
        }
        .friendlink a.flink {
            color: #aaa;
            text-decoration: none;
            padding: 8px 15px;
            border-radius: 5px;
            transition: all 0.3s ease;
            display: inline-block;
            margin: 5px;
            background: rgba(255,255,255,0.05);
        }
        .friendlink a.flink:hover {
            color: white;
            background: rgba(255,255,255,0.1);
            transform: translateY(-3px);
        }
        .pagination-custom .page-link {
            color: var(--primary-color);
            border: 1px solid #dee2e6;
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--gradient);
            border-color: var(--primary-color);
            color: white;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 60px;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }