.navbar-custom {
            background-color: #d32f2f;
            padding: 8px 0;
            box-shadow: none;
            border: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            transition: all 0.3s ease;
            height: 70px;
        }
        .navbar-custom .navbar-brand {
            color: white;
            font-weight: bold;
            font-size: 1.2rem;
        }
        .navbar-custom .nav-link {
            color: white;
            margin: 0 10px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .navbar-custom .nav-link:hover {
            color: #ffeb3b;
            transform: translateY(-2px);
        }
        
        /* 轮播图样式 */
        .hero-carousel {
            height: auto;
            overflow: hidden;
        }
        .carousel-item {
            height: 500px;
            background: linear-gradient(135deg, #1a237e 0%, #3949ab 100%);
            position: relative;
        }
        .carousel-item.slide-2 {
            background: linear-gradient(135deg, #d32f2f 0%, #f44336 100%);
        }
        .carousel-item.slide-3 {
            background: linear-gradient(135deg, #4caf50 0%, #8bc34a 100%);
        }
        .carousel-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: white;
            z-index: 2;
        }
        .carousel-title {
            font-size: 3rem;
            font-weight: bold;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .carousel-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .carousel-btn {
            background: rgba(255,255,255,0.2);
            border: 2px solid white;
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: bold;
            transition: all 0.3s ease;
        }
        .carousel-btn:hover {
            background: white;
            color: #1a237e;
            transform: translateY(-2px);
        }
        
        .lottery-section {
            background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
            padding: 25px 0;
            box-shadow: inset 0 2px 10px rgba(0,0,0,0.1);
        }
        .lottery-ball {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            margin: 0 4px;
            box-shadow: 0 3px 6px rgba(0,0,0,0.2);
            transition: transform 0.3s ease;
        }
        .lottery-ball:hover {
            transform: scale(1.1);
        }
        .red-ball {
            background: linear-gradient(135deg, #f44336, #d32f2f);
        }
        .blue-ball {
            background: linear-gradient(135deg, #2196f3, #1976d2);
        }
        
        .content-section {
            padding: 70px 0;
            margin-top: 15px;
        }
        .video-card {
            border: none;
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            border-radius: 15px;
            overflow: hidden;
        }
        .video-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0,0,0,0.2);
        }
        
        /* 16:9 视频缩略图 */
        .video-thumbnail {
            aspect-ratio: 16/9;
            position: relative;
            background: linear-gradient(45deg, #1a237e, #3949ab);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            overflow: hidden;
            background-size: cover;
            background-position: center;
        }
        
        /* 播放按钮 */
        .play-button {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 2;
        }
        .play-button:hover {
            background: white;
            transform: translate(-50%, -50%) scale(1.1);
        }
        .play-button i {
            color: #1a237e;
            font-size: 1rem;
            margin-left: 2px;
        }
        
        /* 视频覆盖层 */
        .video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.3);
            transition: all 0.3s ease;
        }
        .video-card:hover .video-overlay {
            background: rgba(0,0,0,0.1);
        }
        
        .live-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: linear-gradient(45deg, #f44336, #ff5722);
            color: white;
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: bold;
            z-index: 3;
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        
        .footer-custom {
            background: linear-gradient(135deg, #212121 0%, #424242 100%);
            color: white;
            padding: 50px 0 30px;
        }
        .qr-code {
            width: 100px;
            height: 100px;
            background: white;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
            transition: transform 0.3s ease;
        }
        .qr-code:hover {
            transform: scale(1.05);
        }
        
        .section-title {
            color: #d32f2f;
            font-weight: bold;
            margin-bottom: 30px;
            position: relative;
            font-size: 1.4rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #d32f2f, #f44336);
            border-radius: 2px;
        }
        
        /* 直播背景图片样式 - CSS静态定义 */
        .bg-image-1 {
            background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/gm.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .bg-image-2 {
            background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/zjt.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .bg-image-3 {
            background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/ll.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        /* 宝典背景图片 - CSS固定设置 */
        .bg-baodian {
            background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/bd.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        
        /* 卡片内容样式 */
        .card-body {
            padding: 20px;
        }
        .card-text {
            font-size: 1rem;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        
        /* 链接样式统一 */
        a, a:link {
            text-decoration: none !important;
            color: inherit;
        }
        a:hover {
            text-decoration: none !important;
        }
        
        /* 最新课程标题样式 */
        .item-title a h3 {
            font-size: 1rem;
            line-height: 1.5;
            color: inherit;
            transition: color 0.3s ease;
        }
        .item-title a:hover h3 {
            color: #d32f2f;
        }
        
        /* Slogan样式 */
        .Slogan {
            font-size: 0.8rem;
            font-weight: normal;
            color: #fff;
            margin-left: 10px;
        }
        
        /* 圆形图标容器样式 */
        .icon-circle {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            transition: all 0.3s ease;
        }
        .icon-circle i {
            font-size: 2rem;
        }
        .icon-circle:hover {
            transform: scale(1.1);
        }
        
        /* 活动卡片优化样式 */
        .activity-card {
            transition: all 0.3s ease;
            border-radius: 20px !important;
        }
        .activity-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.15) !important;
        }
        .activity-card .card-body {
            padding: 2rem !important;
        }
        .activity-card .card-title {
            color: #333;
            font-size: 1.25rem;
        }
        .activity-card .btn {
            border-radius: 25px;
            font-weight: 500;
            transition: all 0.3s ease;
            border-width: 1px;
            border-style: solid;
            border-color: #d32f2f;
            background-color: transparent;
            color: #d32f2f;
        }
        .activity-card .btn:hover {
            background-color: #d32f2f;
            color: white;
            transform: translateY(-2px);
        }
        
        /* 平滑滚动 */
        html {
            scroll-behavior: smooth;
        }
        
        /* 锚点偏移，避免导航栏遮挡 */
        section[id] {
            scroll-margin-top: 80px;
        }
        
        /* 响应式优化 */
        @media (max-width: 768px) {
            .carousel-title {
            }
            .play-button {
                width: 30px;
                height: 30px;
            }
            .play-button i {
                font-size: 0.8rem;
            }
            
            /* 移动端banner图片优化 */
            .hero-carousel .carousel-inner img {
                width: 100% !important;
                height: auto !important;
                min-width: 100% !important;
                max-width: 100% !important;
                object-fit: cover;
            }
            
            .hero-carousel .carousel-item {
                height: auto;
            }
            
            .hero-carousel .container {
                padding: 0;
            }
            
            .hero-carousel .d-flex {
                width: 100%;
            }
            
            /* 移动端返回顶部按钮位置调整 */
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 45px;
                height: 45px;
                font-size: 1.1rem;
            }
            
            /* 移动端内容区域padding优化 */
            .content-section {
                padding: 0;
            }
            
            /* 移动端直播区域布局优化 */
            #zhibo .row {
                display: flex;
                flex-wrap: wrap;
            }
            
            #zhibo .col-md-4:first-child {
                width: 100%;
                margin-bottom: 20px;
            }
            
            #zhibo .col-md-4:nth-child(2),
            #zhibo .col-md-4:nth-child(3) {
                width: 50%;
                padding-left: 7.5px;
                padding-right: 7.5px;
            }
            
            #zhibo .col-md-4:nth-child(2) {
                padding-left: 15px;
                padding-right: 7.5px;
            }
            
            #zhibo .col-md-4:nth-child(3) {
                padding-left: 7.5px;
                padding-right: 15px;
            }
            
            /* 移动端宝典区域布局优化 */
            #baodian .row {
                display: flex;
                flex-wrap: wrap;
            }
            
            #baodian .col-md-4:first-child {
                width: 100%;
                margin-bottom: 20px;
            }
            
            #baodian .col-md-4:nth-child(2),
            #baodian .col-md-4:nth-child(3) {
                width: 50%;
                padding-left: 7.5px;
                padding-right: 7.5px;
            }
            
            #baodian .col-md-4:nth-child(2) {
                padding-left: 15px;
                padding-right: 7.5px;
            }
            
            #baodian .col-md-4:nth-child(3) {
                padding-left: 7.5px;
                padding-right: 15px;
            }
            
            /* 移动端课程区域布局优化 - 一行两个 */
            #kecheng .row {
                display: flex;
                flex-wrap: wrap;
            }
            
            #kecheng .col-md-3 {
                width: 50%;
                margin-bottom: 20px;
                padding-left: 7.5px;
                padding-right: 7.5px;
            }
            
            #kecheng .col-md-3:nth-child(odd) {
                padding-left: 15px;
                padding-right: 7.5px;
            }
            
            #kecheng .col-md-3:nth-child(even) {
                padding-left: 7.5px;
                padding-right: 15px;
            }
            
            /* 移动端会员与活动区域布局优化 - 一行两个 */
            #huodong .row {
                display: flex;
                flex-wrap: wrap;
            }
            
            #huodong .col-md-3 {
                width: 50%;
                margin-bottom: 20px;
                padding-left: 7.5px;
                padding-right: 7.5px;
            }
            
            #huodong .col-md-3:nth-child(odd) {
                padding-left: 15px;
                padding-right: 7.5px;
            }
            
            #huodong .col-md-3:nth-child(even) {
                padding-left: 7.5px;
                padding-right: 15px;
            }
        }
        
        /* 为固定导航栏添加body顶部间距 */
        body {
            padding-top: 70px;
        }
        
        /* 返回顶部按钮样式 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #d32f2f, #f44336);
            color: white;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(211, 47, 47, 0.3);
            transition: all 0.3s ease;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: linear-gradient(135deg, #b71c1c, #d32f2f);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.4);
        }
        .back-to-top:active {
            transform: translateY(0);
        }