.fa-icon-circle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 56px;
        height: 56px;
        border-radius: 50%;
        background: linear-gradient(135deg, #f3e5f5 0%, #9c27b0 100%); /* AI写作助手主题色 */
        color: #7b1fa2; /* AI写作助手主题色 */
        font-size: 2rem;
        box-shadow: 0 2px 8px #f3e5f5; /* AI写作助手主题色 */
        margin-bottom: 0.5rem;
    }
    .page-banner-container {
        background: linear-gradient(120deg, #f3e5f5 0%, #9c27b0 100%) !important; /* Banner背景色 */
    }
    .feature-card:hover {
        box-shadow: 0 8px 32px #f3e5f5 !important; /* 卡片悬停阴影颜色 */
    }
    .feature-icon {
        font-size: 2.5rem;
        margin-bottom: 1rem;
        color: #9c27b0;
    }
    .benefit-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 24px rgba(156, 39, 176, 0.15);
    }
    .workflow-step:after {
        background: #9c27b0;
    }
    .step-number {
        background: #9c27b0;
        color: #fff;
    }
    .demo-img:hover {
        transform: scale(1.02);
        box-shadow: 0 12px 32px rgba(156, 39, 176, 0.2);
    }
    /* AI写作功能卡片样式 */
    /* 在<style>标签中添加以下样式来增加整体高度 */
    .feature-card-ppt {
        background: #fff;
        border-radius: 15px;
        padding: 40px 25px; /* 增加内边距 */
        box-shadow: 0 5px 20px rgba(156, 39, 176, 0.1);
        transition: all 0.3s ease;
        border: 1px solid #f0f0f0;
        height: 100%;
        min-height: 280px; /* 设置最小高度 */
    }
    
    .section {
        padding: 80px 0; /* 增加区块间距 */
    }
    
    .section-title {
        margin-bottom: 60px; /* 增加标题下方间距 */
    }
    
    /* 视频预留区域样式 */
    .video-placeholder:hover {
        border-color: #9c27b0;
        background: #fafafa;
    }
    
    .video-placeholder:hover .fa-play-circle {
        color: #7b1fa2;
        transform: scale(1.1);
        transition: all 0.3s ease;
    }

    .feature-card-ppt::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(90deg, #9c27b0 0%, #ba68c8 100%);
    }

    .feature-card-ppt:hover {
        transform: translateY(-8px);
        box-shadow: 0 12px 40px rgba(156, 39, 176, 0.15);
        border-color: rgba(156, 39, 176, 0.2);
    }

    .feature-icon-ppt {
        width: 80px;
        height: 80px;
        margin: 0 auto 1.5rem;
        background: linear-gradient(135deg, #f3e5f5 0%, #9c27b0 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        box-shadow: 0 4px 16px rgba(156, 39, 176, 0.2);
    }

    .feature-icon-ppt i {
        font-size: 2.2rem;
        color: #7b1fa2;
        z-index: 2;
    }

    .feature-card-ppt:hover .feature-icon-ppt {
        transform: scale(1.1);
        box-shadow: 0 6px 24px rgba(156, 39, 176, 0.3);
    }

    .feature-card-ppt:hover h4 {
        color: #9c27b0;
    }

        /* AI写作助手主题色彩 */
        :root {
        --primary-color: #9c27b0;
        --primary-light: #ba68c8;
        --primary-dark: #7b1fa2;
        --secondary-color: #f8fafd;
        --text-dark: #2c3e50;
        --text-muted: #6c757d;
    }