/* 功能详情页布局调整 */
.feature-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

/* 调整视频容器高度，使其与描述内容高度匹配 */
.feature-video {
    position: sticky;
    top: 100px;
    height: fit-content;
    background: #f8fbff;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.feature-video iframe {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 添加视频下方的说明文字 */
.video-caption {
    margin-top: 1.5rem;
    text-align: center;
    color: #666;
    font-style: italic;
    font-size: 0.9rem;
}

/* 添加视频播放按钮效果 */
.video-placeholder {
    position: relative;
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #4A90E2, #7BB3F0);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.video-placeholder:hover {
    transform: scale(1.02);
}

.video-placeholder::before {
    content: "";
    position: absolute;
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-placeholder::after {
    content: "▶";
    position: absolute;
    color: #4A90E2;
    font-size: 2rem;
    margin-left: 5px;
}

.video-title {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 当描述内容较长时，确保视频容器保持在视口中 */
@media (min-width: 769px) {
    .feature-video {
        min-height: 500px;
    }
    
    .video-placeholder {
        height: 350px;
    }
}

/* 响应式调整 */
@media (max-width: 768px) {
    .feature-body {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-video {
        position: relative;
        top: 0;
        margin-bottom: 2rem;
    }
}