#module-rs-dc6900ai-topology * { margin: 0; padding: 0; box-sizing: border-box; }
    #module-rs-dc6900ai-topology {
        font-family: 'Inter', -apple-system, sans-serif; background: #f8fafc;
        padding: 40px 20px; display: flex; justify-content: center;
    }
    #module-rs-dc6900ai-topology .diagram-wrapper {
        max-width: 1400px; width: 100%; background: #ffffff; border-radius: 16px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04); border: 1px solid #e9edf4; padding: 30px; position: relative;
    }
    #module-rs-dc6900ai-topology .diagram-title { text-align: center; margin-bottom: 30px; }
    #module-rs-dc6900ai-topology .diagram-title h2 { font-size: 24px; font-weight: 700; color: #0a1929; }
    #module-rs-dc6900ai-topology .diagram-title p { font-size: 15px; color: #475569; margin-top: 8px; line-height: 1.5; }
    #module-rs-dc6900ai-topology .topology-container { position: relative; display: flex; flex-direction: column; gap: 20px; min-height: 500px; background: #fcfdff; }

    #module-rs-dc6900ai-topology .layer-row {
        display: flex; align-items: flex-start; position: relative; padding: 20px 0;
        border-bottom: 1px dashed #e2e8f0; background: rgba(252, 253, 255, 0.85); min-height: 120px;
    }
    #module-rs-dc6900ai-topology .layer-row:last-child { border-bottom: none; }
    #module-rs-dc6900ai-topology .layer-label { width: 160px; flex-shrink: 0; padding-top: 10px; }
    #module-rs-dc6900ai-topology .layer-label .title { font-size: 16px; font-weight: 700; color: #1e3a8a; display: block; }
    #module-rs-dc6900ai-topology .layer-label .sub { font-size: 12px; color: #475569; display: block; margin-top: 2px; line-height: 1.4; }
    #module-rs-dc6900ai-topology .device-area { flex: 1; display: flex; align-items: center; justify-content: center; padding: 0 20px; position: relative; }
    #module-rs-dc6900ai-topology .device-group-wrapper { display: flex; flex-direction: column; width: 100%; gap: 8px; }
    #module-rs-dc6900ai-topology .device-group-row { display: flex; justify-content: space-between; width: 100%; gap: 20px; flex-wrap: wrap; }
    #module-rs-dc6900ai-topology .device-group {
        display: flex; align-items: center; padding: 12px 16px; background: #f8faff; border: 1px solid #b9ccf0;
        border-radius: 12px; flex-wrap: wrap; justify-content: center; flex: 1; min-width: 180px;
    }
    #module-rs-dc6900ai-topology .center-indicator {
        position: static !important; margin: 0 auto !important; display: inline-block; background: #f0f6ff;
        padding: 6px 12px; border-radius: 8px; border: 1px solid #b9ccf0; font-size: 12px; font-weight: 600;
        color: #2563eb; text-align: center; line-height: 1.3;
    }
    #module-rs-dc6900ai-topology .device-icon { display: flex; flex-direction: column; align-items: center; margin-right: 10px; position: relative; }
    #module-rs-dc6900ai-topology .device-icon:last-child { margin-right: 0; }
    #module-rs-dc6900ai-topology .switch-box {
        width: 60px; height: 20px; background: linear-gradient(180deg, #2563eb, #1d4ed8); border-radius: 3px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden;
    }
    #module-rs-dc6900ai-topology .switch-box::after {
        content: ''; position: absolute; bottom: 2px; left: 4px; right: 4px; height: 6px;
        background: repeating-linear-gradient(90deg, #ffffff 0px, #ffffff 2px, transparent 2px, transparent 4px);
        opacity: 0.5; border-radius: 1px;
    }
    #module-rs-dc6900ai-topology .device-label { font-size: 11px; font-weight: 500; color: #1e293b; margin-top: 4px; }
    #module-rs-dc6900ai-topology .server-box {
        width: 40px; height: 24px; background: linear-gradient(180deg, #475569, #334155); border-radius: 3px;
        display: flex; align-items: center; justify-content: center; position: relative; box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    #module-rs-dc6900ai-topology .server-box::after {
        content: ''; position: absolute; top: 4px; left: 4px; right: 4px; height: 4px;
        background: repeating-linear-gradient(90deg, #cbd5e1 0px, #cbd5e1 2px, transparent 2px, transparent 4px); border-radius: 1px;
    }
    #module-rs-dc6900ai-topology .interface-labels {
        width: 180px; flex-shrink: 0; display: flex; flex-direction: column; justify-content: center;
        padding-left: 20px; font-size: 13px; color: #334155; border-left: 1px solid #e2e8f0;
    }
    #module-rs-dc6900ai-topology .interface-labels span { padding: 4px 0; }
    #module-rs-dc6900ai-topology .interface-labels .hl { font-weight: 600; color: #0f172a; }

    /* 响应式 */
    @media (max-width: 1024px) {
        #module-rs-dc6900ai-topology .layer-label { width: 120px; }
        #module-rs-dc6900ai-topology .interface-labels { width: 140px; }
        #module-rs-dc6900ai-topology .device-area { padding: 0 10px; }
    }
    @media (max-width: 768px) {
        #module-rs-dc6900ai-topology .layer-row { flex-direction: column; min-height: auto; }
        #module-rs-dc6900ai-topology .layer-label { width: 100%; }
        #module-rs-dc6900ai-topology .interface-labels {
            width: 100%; border-left: none; border-top: 1px solid #e2e8f0;
            padding-left: 0; padding-top: 12px; flex-direction: row; flex-wrap: wrap; gap: 8px;
        }
        #module-rs-dc6900ai-topology .device-area { width: 100%; flex-direction: column; align-items: stretch; }
        #module-rs-dc6900ai-topology .device-group-row { flex-direction: column; gap: 12px; }
        #module-rs-dc6900ai-topology .device-group { width: 100%; justify-content: center; flex-wrap: wrap; }
        #module-rs-dc6900ai-topology .center-indicator { width: 100% !important; margin-top: 4px !important; }
        #module-rs-dc6900ai-topology .diagram-wrapper { padding: 16px; }
    }