:root {
            --primary-color: #e63946;
            --secondary-color: #a8dadc;
            --dark-color: #1d3557;
            --light-color: #f1faee;
            --accent-color: #ff9f1c;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.8rem;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1511379938547-c1f69419868d?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0 80px;
            margin-top: 76px;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
            color: var(--dark-color);
            text-align: center;
            font-weight: 700;
        }
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .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);
        }
        .badge-custom {
            background-color: var(--primary-color);
            font-size: 0.7rem;
            padding: 4px 8px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #c1121f;
            border-color: #c1121f;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(230, 57, 70, 0.3);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
            border-radius: 30px;
            padding: 8px 20px;
            font-weight: 600;
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .nav-pills .nav-link.active {
            background-color: var(--primary-color);
            font-weight: 600;
        }
        .footer {
            background-color: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .flink {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 8px 20px;
            margin: 5px;
            border-radius: 30px;
            transition: all 0.3s ease;
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .friendlink {
            background-color: #e9ecef;
            padding: 40px 0;
        }
        .pagination .page-link {
            color: var(--primary-color);
        }
        .pagination .page-item.active .page-link {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .table-hover tbody tr:hover {
            background-color: rgba(230, 57, 70, 0.05);
        }
        .modal-content {
            border-radius: 15px;
            overflow: hidden;
        }
        .video-thumbnail {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 15px;
        }
        .video-thumbnail .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: rgba(230, 57, 70, 0.8);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 24px;
            transition: all 0.3s ease;
        }
        .video-thumbnail:hover .play-btn {
            background-color: rgba(230, 57, 70, 1);
            transform: translate(-50%, -50%) scale(1.1);
        }
        .keyword-tag {
            display: inline-block;
            background-color: #f1f1f1;
            padding: 3px 12px;
            margin: 3px 5px;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #555;
        }
        .keyword-tag:hover {
            background-color: var(--secondary-color);
            color: var(--dark-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 50px;
                margin-top: 66px;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .card-img-top {
                height: 200px;
            }
        }