/* 重置默认边距 */
    body, html {
        margin: 0;
        padding: 0;
        width: 100%;
        height: 100%;
        overflow-x: hidden;
    }
    
    /* 全屏背景容器 */
    .fullscreen-video-container {
        position: relative;
        width: 100%;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background-image: url('//ueeshop.ly200-cdn.com/u_file/UPAZ/UPAZ285/2506/24/photo/e1d3e13974.png?v=1705563586');
        background-size: cover;
        background-position: center;
        background-attachment: fixed;
        padding: 20px;
        box-sizing: border-box;
        overflow: hidden;
    }
    
    /* 视频播放器主体 */
    .video-player {
        width: 90%;
        max-width: 1000px;
        position: relative;
        z-index: 2;
        margin: 0 auto;
    }
    
    /* 视频标题 */
    .video-title {
        text-align: center;
        color: white;
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin: 0 0 20px 0; /* 减少下边距 */
        font-weight: 700;
        text-shadow: 0 2px 10px rgba(0,0,0,0.8);
        letter-spacing: 1.5px;
        width: 100%;
        max-width: 1000px;
        padding: 0 20px;
        box-sizing: border-box;
    }
    
    /* 视频iframe容器 */
    .video-iframe-container {
        position: relative;
        padding-bottom: 56.25%; /* 16:9比例 */
        height: 0;
        overflow: hidden;
        border-radius: 12px;
        box-shadow: 0 0 0 3px rgba(255,255,255,0.9),
                    0 0 0 12px rgba(0,0,0,0.25),
                    0 20px 60px rgba(0,0,0,0.6);
        backdrop-filter: blur(8px);
        background-color: rgba(0,0,0,0.2);
        transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        width: 100%;
    }
    
    .video-iframe-container:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow: 0 0 0 4px rgba(255,255,255,0.95),
                    0 0 0 18px rgba(0,0,0,0.3),
                    0 30px 80px rgba(0,0,0,0.7);
    }
    
    /* YouTube iframe */
    .video-iframe-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: none;
    }

    /* 覆盖层增强可读性 */
    .overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0);
        z-index: 1;
    }

    /* 平板设备优化 */
    @media (max-width: 1024px) {
        .fullscreen-video-container {
            padding: 30px 20px; /* 调整上下边距 */
        }
        
        .video-title {
            margin-bottom: 15px;
            font-size: clamp(1.5rem, 5vw, 2rem);
        }
    }

    /* 移动端优化 */
    @media (max-width: 768px) {
        .fullscreen-video-container {
            padding: 20px 15px; /* 减少上下边距 */
            min-height: auto; /* 取消最小高度限制 */
            height: auto;
            justify-content: flex-start; /* 顶部对齐 */
            padding-top: 30px; /* 适当保留顶部间距 */
        }
        
        .video-player {
            width: 100%;
            padding: 0 10px;
        }
        
        .video-title {
            margin-bottom: 15px;
            padding: 0 10px;
            font-size: 1.8rem;
        }
        
        .video-iframe-container {
            box-shadow: 0 0 0 2px rgba(255,255,255,0.9),
                        0 0 0 8px rgba(0,0,0,0.25),
                        0 10px 30px rgba(0,0,0,0.5);
        }
    }

    /* 小屏手机优化 */
    @media (max-width: 480px) {
        .fullscreen-video-container {
            padding: 15px 10px; /* 进一步减少边距 */
            padding-top: 20px; /* 保留少量顶部间距 */
        }
        
        .video-title {
            margin-bottom: 12px;
            font-size: 1.5rem;
            letter-spacing: 1px;
        }
    }

    /* 超小屏手机优化 */
    @media (max-width: 360px) {
        .fullscreen-video-container {
            padding: 10px 8px;
            padding-top: 15px;
        }
        
        .video-title {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
    }