/* --- 为 RS-DC6990 Features 模块添加作用域 ID 标识 --- */
    #module-rs-dc6990-features * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    
    #module-rs-dc6990-features {
        font-family: 'Inter', -apple-system, sans-serif;
        background: #f5f7fa;
        color: #1a202c;
        padding: 40px 20px;
        display: flex;
        justify-content: center;
    }

    #module-rs-dc6990-features .features-wrapper {
        max-width: 1200px;
        width: 100%;
        background: #ffffff;
        border-radius: 20px;
        padding: 40px;
        border: 1px solid #e9edf4;
    }
    
    #module-rs-dc6990-features .section-header {
        text-align: center;
        margin-bottom: 40px;
        border-bottom: 1px solid #edf2f7;
        padding-bottom: 24px;
    }
    #module-rs-dc6990-features .section-header h2 {
        font-size: 28px;
        font-weight: 700;
        color: #0a1929;
    }
    #module-rs-dc6990-features .section-header p {
        font-size: 15px;
        color: #64748b;
        margin-top: 8px;
        line-height: 1.5;
    }

    #module-rs-dc6990-features .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-bottom: 48px;
    }

    /* 常规特性与 GLB 卡片 */
    #module-rs-dc6990-features .feature-card, 
    #module-rs-dc6990-features .glb-card {
        background: #f9fbfd;
        border: 1px solid #eaf0f6;
        border-radius: 12px;
        padding: 28px 24px;
        transition: all 0.25s ease;
        display: flex;
        flex-direction: column;
    }
    #module-rs-dc6990-features .feature-card:hover, 
    #module-rs-dc6990-features .glb-card:hover {
        transform: translateY(-4px);
        border-color: #cbd5e1;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
    }
    #module-rs-dc6990-features .feature-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        background: #eef4ff;
        border-radius: 10px;
        color: #2563eb;
        font-size: 22px;
        margin-bottom: 16px;
    }
    #module-rs-dc6990-features .feature-title {
        font-size: 18px;
        font-weight: 600;
        color: #0b1c33;
        margin-bottom: 12px;
    }

    /* GLB 专属样式 */
    #module-rs-dc6990-features .glb-card {
        background: #f9fbff;
        border: 1px solid #b9ccf0;
        padding: 0;
        overflow: hidden;
    }
    #module-rs-dc6990-features .glb-header {
        padding: 20px 24px 12px;
        background: #f2f6fc;
        border-bottom: 1px solid #e6edf6;
        text-align: center;
    }
    #module-rs-dc6990-features .glb-title {
        font-size: 20px;
        font-weight: 700;
        color: #0a1929;
    }
    #module-rs-dc6990-features .glb-sub {
        font-size: 13px;
        color: #475569;
        margin-top: 4px;
    }
    #module-rs-dc6990-features .glb-graphic {
        padding: 16px 10px;
        background: #ffffff;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 140px;
        border-bottom: 1px solid #eef2f7;
    }
    #module-rs-dc6990-features .topo-svg {
        width: 100%;
        max-width: 280px;
        height: auto;
    }
    #module-rs-dc6990-features .glb-footer {
        padding: 16px 24px 24px;
        background: #f8fafc;
        flex-grow: 1;
    }

    /* 圆点列表 */
    #module-rs-dc6990-features .feature-desc ul, 
    #module-rs-dc6990-features .glb-footer ul {
        list-style: none;
        padding: 0;
        flex-grow: 1;
    }
    #module-rs-dc6990-features .feature-desc li, 
    #module-rs-dc6990-features .glb-footer li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 14px;
        color: #334155;
        line-height: 1.6;
        margin-bottom: 8px;
    }
    #module-rs-dc6990-features .feature-desc li:last-child, 
    #module-rs-dc6990-features .glb-footer li:last-child {
        margin-bottom: 0;
    }
    #module-rs-dc6990-features .feature-desc .bullet, 
    #module-rs-dc6990-features .glb-footer .bullet {
        display: inline-block;
        width: 8px;
        height: 8px;
        background: #3b82f6;
        border-radius: 50%;
        margin-top: 6px;
        flex-shrink: 0;
    }

    /* 作用域响应式适配 */
    @media (max-width: 1024px) {
        #module-rs-dc6990-features .features-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
        #module-rs-dc6990-features .features-grid { grid-template-columns: 1fr; }
        #module-rs-dc6990-features .features-wrapper { padding: 20px 16px; }
        #module-rs-dc6990-features .section-header h2 { font-size: 24px; }
        #module-rs-dc6990-features .glb-graphic { height: 120px; }
    }