/* Force Font Awesome icons to stay upright */
    #module-rs-e6150-gt4sfp-features i,
    #module-rs-e6150-gt4sfp-features .fas,
    #module-rs-e6150-gt4sfp-features .far,
    #module-rs-e6150-gt4sfp-features .fab,
    #module-rs-e6150-gt4sfp-features .fa {
        font-style: normal !important;
    }

    #module-rs-e6150-gt4sfp-features * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    #module-rs-e6150-gt4sfp-features {
      font-family: Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: #334155;
      max-width: 1200px;
      margin: 0 auto;
      padding: 48px 24px;
    }
    #module-rs-e6150-gt4sfp-features .section-title {
      font-size: 28px;
      font-weight: 700;
      color: #0f172a;
      text-align: left;
      margin-bottom: 40px;
      padding-bottom: 10px;
      border-bottom: 3px solid #2563eb;
      display: inline-flex;
      align-items: center;
      gap: 12px;
    }
    #module-rs-e6150-gt4sfp-features .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    #module-rs-e6150-gt4sfp-features .feature-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: 12px;
      padding: 32px 24px;
      display: flex;
      flex-direction: column;
      align-items: center;
      transition: all 0.3s ease;
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    #module-rs-e6150-gt4sfp-features .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 28px rgba(37, 99, 235, 0.12);
      border-color: #2563eb;
    }
    #module-rs-e6150-gt4sfp-features .feature-header {
      display: flex;
      align-items: center;
      gap: 12px;
      width: 100%;
      margin-bottom: 20px;
    }
    #module-rs-e6150-gt4sfp-features .feature-header i {
      font-size: 26px;
      color: #2563eb;
      flex-shrink: 0;
    }
    #module-rs-e6150-gt4sfp-features .feature-card h3 {
      font-size: 20px;
      font-weight: 700;
      color: #0f172a;
      text-align: left;
      line-height: 1.4;
    }

    /* Common diagram base */
    #module-rs-e6150-gt4sfp-features .feature-diagram {
      width: 100%;
      height: 140px;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
      border-radius: 10px;
      position: relative;
      overflow: hidden;
    }

    /* 1. Wire-speed Forwarding Diagram */
    .diag-wirespeed {
      display: flex;
      align-items: center;
      gap: 12px;
      width: 90%;
    }
    .diag-wirespeed .port-group {
      display: flex;
      flex-direction: column;
      gap: 4px;
      flex: 1;
    }
    .diag-wirespeed .port-line {
      width: 100%;
      height: 5px;
      background: #93c5fd;
      border-radius: 2px;
      animation: flow-pulse 2s infinite ease-in-out;
    }
    .diag-wirespeed .port-line:nth-child(2) { animation-delay: 0.15s; }
    .diag-wirespeed .port-line:nth-child(3) { animation-delay: 0.3s; }
    .diag-wirespeed .port-line:nth-child(4) { animation-delay: 0.45s; }
    .diag-wirespeed .port-line:nth-child(5) { animation-delay: 0.6s; }
    .diag-wirespeed .port-line:nth-child(6) { animation-delay: 0.75s; }
    @keyframes flow-pulse {
      0%, 100% { opacity: 0.5; }
      50% { opacity: 1; }
    }
    .diag-wirespeed .switch-core {
      width: 70px;
      height: 80px;
      background: #1d4ed8;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 22px;
      flex-shrink: 0;
    }
    .diag-wirespeed .uplink-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
      flex: 0.7;
    }
    .diag-wirespeed .uplink-line {
      height: 7px;
      border-radius: 3px;
      background: linear-gradient(90deg, #3b82f6, #0ea5e9);
      animation: rate-pulse 2s infinite ease-in-out;
    }
    .diag-wirespeed .uplink-line:nth-child(2) { animation-delay: 0.3s; }
    .diag-wirespeed .uplink-line:nth-child(3) { animation-delay: 0.6s; }
    .diag-wirespeed .uplink-line:nth-child(4) { animation-delay: 0.9s; }
    @keyframes rate-pulse {
      0%, 100% { opacity: 0.6; width: 80%; }
      50% { opacity: 1; width: 100%; }
    }

    /* 2. VLAN Diagram */
    .diag-vlan {
      display: flex;
      flex-direction: column;
      gap: 8px;
      width: 85%;
    }
    .diag-vlan .vlan-row {
      display: flex;
      gap: 6px;
      width: 100%;
    }
    .diag-vlan .vlan-segment {
      flex: 1;
      height: 22px;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 11px;
      font-weight: 600;
      animation: vlan-breathe 2.5s infinite ease-in-out;
    }
    .diag-vlan .vlan-10 { background: #3b82f6; animation-delay: 0s; }
    .diag-vlan .vlan-20 { background: #8b5cf6; animation-delay: 0.3s; }
    .diag-vlan .vlan-30 { background: #0ea5e9; animation-delay: 0.6s; }
    .diag-vlan .vlan-40 { background: #10b981; animation-delay: 0.9s; }
    @keyframes vlan-breathe {
      0%, 100% { opacity: 0.8; transform: scaleY(0.95); }
      50% { opacity: 1; transform: scaleY(1.05); }
    }
    .diag-vlan .switch-bar {
      width: 100%;
      height: 30px;
      background: #1e293b;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 12px;
      font-weight: 600;
    }

    /* 3. Security Defense Diagram */
    .diag-security {
      display: flex;
      align-items: center;
      gap: 8px;
      width: 90%;
    }
    .diag-security .traffic-in {
      display: flex;
      flex-direction: column;
      gap: 4px;
      flex: 1;
    }
    .diag-security .traffic-item {
      height: 6px;
      border-radius: 3px;
    }
    .diag-security .traffic-normal { background: #22c55e; }
    .diag-security .traffic-attack { background: #ef4444; }
    .diag-security .shield-icon {
      color: #1d4ed8;
      font-size: 32px;
      flex-shrink: 0;
    }
    .diag-security .blocked {
      text-decoration: line-through;
      opacity: 0.3;
    }

    /* 4. QoS Diagram */
    .diag-qos {
      display: flex;
      flex-direction: column;
      gap: 8px;
      width: 85%;
    }
    .diag-qos .queue-row {
      display: flex;
      align-items: flex-end;
      gap: 6px;
      height: 80px;
      padding: 0 10px;
    }
    .diag-qos .queue-bar {
      flex: 1;
      border-radius: 4px 4px 0 0;
      background: linear-gradient(to top, #3b82f6, #60a5fa);
      animation: queue-sched 3s infinite ease-in-out;
    }
    .diag-qos .queue-bar:nth-child(1) { height: 90%; animation-delay: 0s; }
    .diag-qos .queue-bar:nth-child(2) { height: 70%; animation-delay: 0.2s; }
    .diag-qos .queue-bar:nth-child(3) { height: 50%; animation-delay: 0.4s; }
    .diag-qos .queue-bar:nth-child(4) { height: 30%; animation-delay: 0.6s; }
    .diag-qos .queue-bar:nth-child(5) { height: 20%; animation-delay: 0.8s; }
    .diag-qos .queue-bar:nth-child(6) { height: 15%; animation-delay: 1s; }
    .diag-qos .queue-bar:nth-child(7) { height: 10%; animation-delay: 1.2s; }
    .diag-qos .queue-bar:nth-child(8) { height: 8%; animation-delay: 1.4s; }
    @keyframes queue-sched {
      0%, 100% { opacity: 0.7; }
      50% { opacity: 1; }
    }
    .diag-qos .output-line {
      width: 100%;
      height: 6px;
      background: #1d4ed8;
      border-radius: 3px;
    }

    /* 5. Routing Diagram */
    .diag-routing {
      display: flex;
      align-items: center;
      gap: 10px;
      width: 90%;
    }
    .diag-routing .network-block {
      flex: 1;
      height: 60px;
      border-radius: 8px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 11px;
      font-weight: 600;
    }
    .diag-routing .net-a { background: #3b82f6; }
    .diag-routing .net-b { background: #8b5cf6; }
    .diag-routing .router-core {
      width: 60px;
      height: 60px;
      background: #1e293b;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 22px;
      flex-shrink: 0;
      position: relative;
    }
    .diag-routing .route-arrow {
      position: absolute;
      width: 20px;
      height: 2px;
      background: #22c55e;
      animation: route-flow 2s infinite linear;
    }
    .diag-routing .arrow-left { left: -25px; animation-direction: normal; }
    .diag-routing .arrow-right { right: -25px; animation-direction: reverse; }
    @keyframes route-flow {
      0% { opacity: 0; transform: scaleX(0.5); }
      50% { opacity: 1; transform: scaleX(1); }
      100% { opacity: 0; transform: scaleX(0.5); }
    }

    /* 6. Management Diagram */
    .diag-mgmt {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      width: 80%;
    }
    .diag-mgmt .mgmt-devices {
      display: flex;
      justify-content: space-around;
      width: 100%;
    }
    .diag-mgmt .mgmt-icon {
      font-size: 22px;
      color: #3b82f6;
      animation: mgmt-blink 2s infinite ease-in-out;
    }
    .diag-mgmt .mgmt-icon:nth-child(2) { animation-delay: 0.3s; }
    .diag-mgmt .mgmt-icon:nth-child(3) { animation-delay: 0.6s; }
    @keyframes mgmt-blink {
      0%, 100% { opacity: 0.6; }
      50% { opacity: 1; }
    }
    .diag-mgmt .switch-unit {
      width: 120px;
      height: 40px;
      background: #1d4ed8;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 12px;
      font-weight: 600;
    }

    /* 7. Energy Saving Diagram */
    .diag-energy {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      width: 85%;
    }
    .diag-energy .leaf-icon {
      font-size: 36px;
      color: #16a34a;
      animation: leaf-breathe 2.5s infinite ease-in-out;
    }
    @keyframes leaf-breathe {
      0%, 100% { transform: scale(1); opacity: 0.9; }
      50% { transform: scale(1.1); opacity: 1; }
    }
    .diag-energy .energy-bars {
      display: flex;
      flex-direction: column;
      gap: 5px;
      flex: 1;
    }
    .diag-energy .energy-bar {
      height: 8px;
      border-radius: 4px;
      background: #e2e8f0;
      position: relative;
      overflow: hidden;
    }
    .diag-energy .energy-fill {
      height: 100%;
      border-radius: 4px;
      background: linear-gradient(90deg, #22c55e, #10b981);
      width: 35%;
      animation: energy-save 3s infinite ease-in-out;
    }
    @keyframes energy-save {
      0%, 100% { width: 40%; }
      50% { width: 30%; }
    }
    .diag-energy .save-label {
      font-size: 11px;
      color: #166534;
      font-weight: 600;
    }

    /* 8. Reliability Diagram */
    .diag-reliability {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      width: 80%;
    }
    .diag-reliability .chip-row {
      display: flex;
      gap: 20px;
    }
    .diag-reliability .chip {
      width: 50px;
      height: 40px;
      background: #3b82f6;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 10px;
      font-weight: 600;
      position: relative;
    }
    .diag-reliability .chip.primary {
      box-shadow: 0 0 10px rgba(37, 99, 235, 0.8);
      animation: chip-active 3s infinite;
    }
    .diag-reliability .chip.backup {
      opacity: 0.5;
      animation: chip-standby 3s infinite 1.5s;
    }
    @keyframes chip-active {
      0%, 100% { opacity: 1; box-shadow: 0 0 10px rgba(37, 99, 235, 0.8); }
      50% { opacity: 0.6; box-shadow: none; }
    }
    @keyframes chip-standby {
      0%, 100% { opacity: 0.5; box-shadow: none; }
      50% { opacity: 1; box-shadow: 0 0 10px rgba(37, 99, 235, 0.8); }
    }
    .diag-reliability .surge-icon {
      font-size: 28px;
      color: #f59e0b;
      animation: surge-flash 2s infinite;
    }
    @keyframes surge-flash {
      0%, 100% { opacity: 0.5; }
      50% { opacity: 1; }
    }

    /* Feature list */
    #module-rs-e6150-gt4sfp-features .feature-list {
      width: 100%;
      list-style: none;
      padding-left: 0;
    }
    #module-rs-e6150-gt4sfp-features .feature-list li {
      position: relative;
      padding-left: 20px;
      margin-bottom: 8px;
      color: #475569;
      text-align: left;
    }
    #module-rs-e6150-gt4sfp-features .feature-list li::before {
      content: '';
      position: absolute;
      left: 0;
      top: 9px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #2563eb;
    }

    /* Responsive */
    @media (max-width: 992px) {
      #module-rs-e6150-gt4sfp-features .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 576px) {
      #module-rs-e6150-gt4sfp-features .features-grid {
        grid-template-columns: 1fr;
      }
      #module-rs-e6150-gt4sfp-features .section-title {
        font-size: 22px;
      }
    }