/* 基础容器 */
    .ai-overview-section {
        max-width: 1200px;
        margin: 60px auto;
        padding: 0 20px;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        color: #0f172a;
    }

    /* 顶部标题区 */
    .ai-overview-header {
        text-align: center;
        margin-bottom: 50px;
    }

    .ai-overview-header h2 {
        font-size: 32px;
        font-weight: 800;
        text-transform: uppercase;
        margin-bottom: 15px;
        letter-spacing: 1px;
    }

    .ai-overview-header h3 {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 20px;
        color: #1e293b;
    }

    .ai-overview-header p {
        font-size: 16px;
        line-height: 1.6;
        color: #475569;
        max-width: 850px;
        margin: 0 auto;
    }

    /* 下部主体布局 */
    .ai-overview-body {
        display: flex;
        gap: 40px;
        align-items: flex-start;
    }

    /* 左侧：2x2 网格 */
    .ai-features-side {
        flex: 1;
    }

    .ai-features-side h4 {
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 30px;
    }

    .ai-features-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    /* 功能卡片样式 */
    .ai-feature-card {
        background-color: #f8fafc;
        padding: 30px 25px;
        border-radius: 16px;
        transition: transform 0.3s ease;
    }

    .ai-feature-card:hover {
        transform: translateY(-5px);
    }

    .ai-feature-card svg {
        color: #56B8B8; /* 使用主色调 */
        margin-bottom: 15px;
    }

    .ai-feature-card h5 {
        font-size: 18px;
        font-weight: 700;
        margin: 0 0 12px 0;
    }

    .ai-feature-card p {
        font-size: 14px;
        line-height: 1.5;
        color: #64748b;
        margin: 0;
    }

    /* 右侧：大图区 */
    .ai-image-side {
        flex: 1;
        position: relative;
    }

    .ai-main-img {
        width: 100%;
        height: auto;
        border-radius: 40px; /* 大圆角还原 */
        display: block;
        box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    }

    /* 悬浮百分比小标 */
    .ai-uptime-badge {
        position: absolute;
        bottom: -20px;
        right: 0;
        background: #ffffff;
        padding: 20px 30px;
        border-radius: 16px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        text-align: left;
    }

    .ai-uptime-badge strong {
        display: block;
        font-size: 24px;
        color: #56B8B8; /* 主色调 */
        font-weight: 800;
    }

    .ai-uptime-badge span {
        font-size: 12px;
        color: #94a3b8;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    /* 移动端适配 */
    @media (max-width: 992px) {
        .ai-overview-body {
            flex-direction: column;
        }
        .ai-features-grid {
            grid-template-columns: 1fr; /* 手机端改为单列 */
        }
        .ai-image-side {
            width: 100%;
        }
        .ai-uptime-badge {
            bottom: 10px;
            right: 10px;
            padding: 15px 20px;
        }
    }