.lab-method {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      margin-top: 40px;
      background: #FAF7F0;
      border: 1px solid #121314;
      border-radius: 4px;
      box-shadow: 2px 2px 0 #121314;
    }
    .lab-step {
      min-width: 0;
      padding: 16px 20px 18px;
      border-left: 1px solid #121314;
    }
    .lab-step:first-child { border-left: 0; }
    .lab-idx {
      margin: 0;
      font-family: "JetBrains Mono", monospace;
      font-size: 11px;
      font-weight: 700;
      line-height: 14px;
      letter-spacing: 0.08em;
      color: #1C3E6E;
    }
    .lab-step h2,
    .lab-case h3 {
      margin: 8px 0 0;
      font-size: 16px;
      font-weight: 700;
      line-height: 20px;
      letter-spacing: 0.02em;
      text-transform: uppercase;
    }
    .lab-step p:last-child {
      margin: 10px 0 0;
      font-size: 15px;
      line-height: 22px;
      color: #5A403C;
    }
    .lab-cases {
      margin-top: var(--gap-section);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .lab-kicker {
      grid-column: 1 / -1;
      margin: 0;
      font-family: "JetBrains Mono", monospace;
      font-size: 11px;
      font-weight: 700;
      line-height: 14px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }
    .lab-case {
      background: #FAF7F0;
      border: 1px solid #121314;
      border-radius: 4px;
      box-shadow: 2px 2px 0 #121314;
      min-width: 0;
      overflow: hidden;
    }
    .lab-case-head {
      min-height: 74px;
      padding: 12px 16px 10px;
      border-bottom: 1px solid #121314;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      justify-content: center;
      gap: 5px;
    }
    .lab-case-head .lab-idx {
      margin: 0;
      color: #1C3E6E;
      font-size: 11px;
      line-height: 15px;
      text-transform: uppercase;
    }
    .lab-case h3 {
      margin: 0;
      font-size: 16px;
      line-height: 20px;
      letter-spacing: 0.01em;
    }
    .lab-stage {
      padding: 10px;
      background: #E4E7EB;
      border-bottom: 1px solid #121314;
    }
    .demo-shell {
      padding: 8px;
      background: #121314;
      border: 1px solid #121314;
    }
    .demo-window {
      min-width: 0;
      min-height: 198px;
      display: grid;
      grid-template-rows: 30px minmax(0, 1fr) 25px;
      overflow: hidden;
      background: #FAF7F0;
      border: 1px solid #CEC6B5;
    }
    .demo-topbar {
      min-height: 30px;
      min-width: 0;
      padding: 3px 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      background: #EAE3D2;
      border-bottom: 1px solid #121314;
    }
    .demo-top-label,
    .demo-status,
    .demo-run,
    .demo-flow,
    .demo-micro,
    .demo-chip,
    .demo-data-label {
      font-family: "JetBrains Mono", monospace;
      font-size: 10px;
      font-weight: 700;
      line-height: 14px;
      letter-spacing: 0.045em;
      text-transform: uppercase;
    }
    .demo-top-label { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
    .demo-status {
      flex: none;
      display: inline-flex;
      align-items: center;
      gap: 5px;
      color: #4F6D4A;
      white-space: nowrap;
    }
    .demo-status::before {
      content: "";
      width: 6px;
      height: 6px;
      background: currentColor;
    }
    .demo-run {
      flex: none;
      min-height: 26px;
      padding: 3px 7px;
      border: 1px solid #121314;
      border-radius: 2px;
      background: #FAF7F0;
      color: #121314;
      font-size: 11px;
      line-height: 14px;
      cursor: pointer;
      transition: background 140ms ease, color 140ms ease, transform 140ms ease;
    }
    .demo-run:hover,
    .demo-run[aria-pressed="true"] { background: #121314; color: #FAF7F0; }
    .demo-run:active { transform: translate(1px, 1px); }
    .demo-run:focus-visible { outline: 2px solid #1C3E6E; outline-offset: 2px; }
    .demo-app {
      min-width: 0;
      min-height: 0;
      padding: 10px;
      display: grid;
      align-content: stretch;
      gap: 8px;
      overflow: hidden;
    }
    .demo-flow {
      min-height: 25px;
      padding: 4px 8px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 4px;
      overflow: hidden;
      border-top: 1px solid #CEC6B5;
      color: #5A403C;
    }
    .demo-flow span { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
    .demo-flow span + span::before { content: ""; display: inline-block; width: 8px; height: 1px; margin: 0 5px 3px 0; background: #1C3E6E; }
    .demo-shell.is-active .web-slots i:first-child { background: #4F6D4A; }
    .demo-shell.is-active .ops-calendar i:nth-child(3),
    .demo-shell.is-active .ops-calendar i:nth-child(7) { background: #4F6D4A; }
    .demo-shell.is-active .support-step i { animation: step-signal 900ms ease-in-out infinite alternate; }
    .demo-shell.is-active .support-step:nth-child(2) i { animation-delay: 120ms; }
    .demo-shell.is-active .support-step:nth-child(3) i { animation-delay: 240ms; }
    .demo-shell.is-active .support-step:nth-child(4) i { animation-delay: 360ms; }
    .demo-shell.is-active .support-step:nth-child(5) i { animation-delay: 480ms; }
    @keyframes step-signal { to { transform: translateX(4px); } }
    @keyframes demo-travel { from { transform: translateX(0); } to { transform: translateX(100px); } }
    /* 01 — interface de réservation, compte client et historique */
    .web-app { grid-template-columns: 52px minmax(0, 1fr) 106px; }
    .web-nav { display: flex; flex-direction: column; gap: 5px; padding-right: 7px; border-right: 1px solid #CEC6B5; }
    .web-nav b { width: 22px; height: 22px; margin: 0 auto 3px; background: #121314; }
    .web-nav i { height: 5px; background: #CEC6B5; }
    .web-nav i:first-of-type { background: #1C3E6E; }
    .web-main { min-width: 0; display: grid; grid-template-rows: auto 1fr; gap: 6px; }
    .web-heading { display: flex; justify-content: space-between; gap: 6px; align-items: center; }
    .web-heading b { font-size: 11px; line-height: 13px; }
    .web-heading i { width: 18px; height: 18px; flex: none; border: 1px solid #121314; border-radius: 50%; }
    .web-booking { padding: 7px; border: 1px solid #121314; background: #F4EFE6; display: flex; flex-direction: column; justify-content: space-between; gap: 5px; }
    .web-booking strong { font-size: 10px; }
    .web-booking .demo-micro { color: #5A403C; }
    .web-slots { display: flex; gap: 4px; }
    .web-slots i { flex: 1; height: 12px; border: 1px solid #121314; background: #FAF7F0; }
    .web-slots i:first-child { background: #1C3E6E; }
    .web-account { display: grid; grid-template-rows: 1fr 1fr; gap: 6px; }
    .web-account section { min-width: 0; padding: 7px; border: 1px solid #CEC6B5; display: flex; flex-direction: column; justify-content: space-between; gap: 5px; }
    .web-account b { font-size: 10px; line-height: 12px; }
    .web-account i { height: 4px; background: #CEC6B5; }
    .web-account i:first-child { width: 70%; background: #4F6D4A; }
    /* 02 — inventaire, calendrier, projets et documentation */
    .ops-app { grid-template-columns: 72px minmax(0, 1fr); }
    .ops-rail { display: flex; flex-direction: column; gap: 6px; padding-right: 7px; border-right: 1px solid #CEC6B5; }
    .ops-rail b { height: 7px; background: #121314; }
    .ops-rail i { height: 18px; border: 1px solid #CEC6B5; background: #F4EFE6; }
    .ops-rail i:first-of-type { border-color: #1C3E6E; }
    .ops-board { min-width: 0; display: grid; grid-template-rows: 1fr 1fr; gap: 7px; }
    .ops-inventory { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 5px; }
    .ops-inventory section { min-width: 0; padding: 5px; border: 1px solid #CEC6B5; display: flex; flex-direction: column; justify-content: space-between; gap: 4px; }
    .ops-inventory i { width: 12px; height: 12px; border: 1px solid #121314; background: #EAE3D2; }
    .ops-inventory b { width: 80%; height: 4px; background: #121314; }
    .ops-inventory span { width: 60%; height: 4px; background: #4F6D4A; }
    .ops-lower { display: grid; grid-template-columns: 1.1fr 1fr; gap: 6px; }
    .ops-calendar { padding: 5px; border: 1px solid #121314; display: grid; grid-template-columns: repeat(4,1fr); grid-template-rows: 8px repeat(2,1fr); gap: 3px; }
    .ops-calendar i { background: #EAE3D2; }
    .ops-calendar i:nth-child(3), .ops-calendar i:nth-child(7) { background: #1C3E6E; }
    .ops-docs { display: flex; flex-direction: column; gap: 4px; justify-content: center; }
    .ops-docs i { height: 9px; border: 1px solid #CEC6B5; background: #FAF7F0; }
    .ops-docs i::before { content: ""; display: block; width: 5px; height: 7px; margin-left: 3px; background: #D63E2A; }
    /* 03 — sources consolidées, graphe de marge et signal net */
    .data-app { grid-template-rows: 34px minmax(0,1fr); }
    .data-kpis { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; }
    .data-kpis section { padding: 5px 7px; border: 1px solid #CEC6B5; display: flex; flex-direction: column; justify-content: space-between; gap: 2px; }
    .data-kpis b { font-family: "JetBrains Mono",monospace; font-size: 10px; line-height: 12px; }
    .data-kpis i { width: 65%; height: 4px; background: #1C3E6E; }
    .data-kpis section:nth-child(2) i { width: 42%; background: #D63E2A; }
    .data-kpis section:nth-child(3) i { width: 78%; background: #4F6D4A; }
    .data-chart-wrap { min-height: 0; display: grid; grid-template-columns: minmax(0,1fr) 86px; gap: 8px; }
    .data-chart { position: relative; min-width: 0; border: 1px solid #121314; background: repeating-linear-gradient(to bottom, transparent 0 20px, #CEC6B5 20px 21px); overflow: hidden; }
    .data-chart svg { position: absolute; inset: 7px; width: calc(100% - 14px); height: calc(100% - 14px); }
    .data-chart polyline { fill: none; stroke: #1C3E6E; stroke-width: 2; vector-effect: non-scaling-stroke; transition: stroke 260ms ease; }
    .data-chart .data-cost { stroke: #D63E2A; stroke-dasharray: 3 3; }
    .demo-shell.is-active .data-chart polyline:first-child { stroke: #4F6D4A; }
    .data-net { display: flex; flex-direction: column; justify-content: center; gap: 5px; padding: 7px; border: 1px solid #121314; background: #EAE3D2; }
    .data-net b { font-size: 10px; line-height: 12px; }
    .data-net i { height: 5px; background: #4F6D4A; }
    /* 04 — email traversant la qualification IA et le support */
    .support-app { grid-template-rows: minmax(0,1fr) 36px; }
    .support-flow { min-width: 0; display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 6px; align-items: center; }
    .support-step { position: relative; min-width: 0; height: 66px; padding: 6px 1px 6px 3px; border: 1px solid #CEC6B5; background: #F4EFE6; display: flex; flex-direction: column; justify-content: space-between; gap: 3px; }
    .support-step:not(:last-child)::after { content: ""; position: absolute; top: 50%; right: -7px; width: 7px; height: 1px; background: #121314; }
    .support-step i { width: 12px; height: 10px; border: 1px solid #121314; background: #FAF7F0; }
    .support-step b { font-family: "JetBrains Mono",monospace; font-size: 10px; line-height: 12px; letter-spacing: -0.07em; text-transform: uppercase; overflow-wrap: anywhere; }
    .support-step:nth-child(2) i { border-radius: 50%; background: #E59B2C; }
    .support-step:nth-child(3) i { background: #D63E2A; }
    .support-step:nth-child(4) i { background: #1C3E6E; }
    .support-step:nth-child(5) i { background: #4F6D4A; }
    .support-result { padding: 6px 8px; display: flex; align-items: center; justify-content: space-between; gap: 8px; background: #EAE3D2; border: 1px solid #CEC6B5; }
    .support-result i { width: 24px; height: 24px; flex: none; border: 1px solid #121314; border-radius: 50%; background: #CEC6B5; }
    .demo-shell.is-active .support-result i { background: #4F6D4A; }
    /* 05 — ancien CRM relié aux outils actuels par une synchronisation */
    .sync-app { grid-template-columns: 1fr 56px 1fr; align-items: center; }
    .sync-system { min-width: 0; min-height: 94px; padding: 8px; border: 1px solid #121314; display: flex; flex-direction: column; justify-content: space-between; gap: 6px; }
    .sync-system.is-legacy { background: #EAE3D2; border-style: dashed; }
    .sync-system.is-modern { background: #F4EFE6; }
    .sync-system b { font-size: 11px; line-height: 13px; }
    .sync-system i { height: 4px; background: #CEC6B5; }
    .sync-system i:nth-of-type(2) { width: 72%; }
    .sync-tools { display: flex; gap: 4px; }
    .sync-tools i { width: 13px; height: 13px; border: 1px solid #121314; background: #FAF7F0; }
    .sync-tools i:first-child { background: #1C3E6E; }
    .sync-bridge { position: relative; height: 34px; display: flex; align-items: center; justify-content: center; }
    .sync-bridge::before { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 2px; background: #121314; }
    .sync-bridge b { z-index: 1; padding: 4px; border: 1px solid #121314; background: #FAF7F0; font-family: "JetBrains Mono",monospace; font-size: 10px; }
    .sync-packet { position: absolute; z-index: 2; left: 0; top: calc(50% - 3px); width: 6px; height: 6px; background: #D63E2A; opacity: 0; }
    .demo-shell:hover .sync-packet, .demo-shell.is-active .sync-packet { opacity: 1; animation: sync-travel 1.3s ease-in-out infinite alternate; }
    @keyframes sync-travel { to { transform: translateX(48px); } }
    .sync-led { width: 6px; height: 6px; background: #CEC6B5; }
    .demo-shell.is-active .sync-led { background: #4F6D4A; }
    /* 06 — diagnostic, architecture cible et progression cloud */
    .roadmap-app { grid-template-columns: 64px 1fr 78px; align-items: center; }
    .roadmap-existing { height: 78px; padding: 7px; border: 1px dashed #121314; background: #EAE3D2; display: flex; flex-direction: column; justify-content: space-between; gap: 4px; }
    .roadmap-existing .demo-micro { font-size: 10px; line-height: 12px; letter-spacing: -0.05em; white-space: nowrap; }
    .roadmap-existing i { height: 8px; border: 1px solid #5A403C; background: #CEC6B5; }
    .roadmap-core { min-width: 0; display: flex; flex-direction: column; gap: 6px; }
    .roadmap-node { padding: 5px 6px; border: 1px solid #121314; background: #F4EFE6; font-family: "JetBrains Mono",monospace; font-size: 10px; font-weight: 700; line-height: 11px; text-transform: uppercase; text-align: center; }
    .roadmap-node:nth-child(2) { border-color: #1C3E6E; }
    .roadmap-cloud { height: 78px; padding: 7px; border: 1px solid #121314; background: #FAF7F0; display: flex; flex-direction: column; justify-content: space-between; gap: 5px; }
    .roadmap-cloud b { font-size: 11px; }
    .roadmap-cloud i { height: 5px; background: #1C3E6E; }
    .roadmap-cloud i:last-child { width: 68%; background: #4F6D4A; }
    .roadmap-timeline { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4,1fr); gap: 4px; }
    .roadmap-timeline i { height: 5px; background: #CEC6B5; }
    .roadmap-timeline i:first-child { background: #1C3E6E; }
    .demo-shell.is-active .roadmap-timeline i { background: #4F6D4A; }
    .lab-chain {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0 0;
      margin: 8px 0 0;
      padding: 0;
      list-style: none;
    }
    .lab-chain li {
      display: flex;
      align-items: center;
      font-family: "JetBrains Mono", monospace;
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.02em;
      line-height: 14px;
      text-transform: uppercase;
      color: #121314;
    }
    .lab-chain li + li::before {
      content: "";
      width: 6px;
      height: 1px;
      margin: 0 4px;
      background: #121314;
      flex: 0 0 auto;
    }
    .lab-cap { padding: 11px 16px 13px; }
    .lab-cap p {
      margin: 0;
      font-size: 13px;
      line-height: 19px;
      color: #5A403C;
    }
    .lab-cap strong { font-weight: 700; color: #121314; }
    @media (max-width: 959px) {
      .web-app { grid-template-columns: 42px minmax(0,1fr) 90px; }
      .ops-app { grid-template-columns: 60px minmax(0,1fr); }
      .roadmap-app { grid-template-columns: 54px minmax(0,1fr) 68px; }
      .demo-window { min-height: 190px; }
    }
    @media (max-width: 560px) {
      .lab-case-head { min-height: 68px; padding: 10px 12px; }
      .lab-case h3 { font-size: 14px; line-height: 18px; }
      .lab-stage { padding: 8px; }
      .demo-shell { padding: 6px; }
      .demo-window { min-height: 184px; grid-template-rows: 30px minmax(0,1fr) 24px; }
      .demo-window.is-dense { grid-template-rows: 30px minmax(0,1fr); }
      .demo-window.is-dense > .demo-flow { display: none; }
      .demo-app { padding: 8px; gap: 6px; }
      .web-app { grid-template-columns: 36px minmax(0,1fr) 78px; }
      .web-account section { padding: 5px; }
      .ops-app { grid-template-columns: 52px minmax(0,1fr); }
      .data-chart-wrap { grid-template-columns: minmax(0,1fr) 72px; }
      .support-step { height: 62px; padding: 5px 3px; }
      .support-step b { font-size: 10px; line-height: 12px; }
      .sync-app { grid-template-columns: minmax(0,1fr) 44px minmax(0,1fr); }
      .sync-system { padding: 6px; }
      .roadmap-app { grid-template-columns: 56px minmax(0,1fr) 62px; }
    }
    @media (prefers-reduced-motion: reduce) {
      .demo-packet::after, .sync-packet, .support-step i { animation: none !important; }
      .demo-run, .data-chart polyline { transition: none; }
    }
    @media (max-width: 959px) {
      .lab-method,
      .lab-cases { grid-template-columns: 1fr; }
      .lab-step { border-left: 0; border-top: 1px solid #121314; }
      .lab-step:first-child { border-top: 0; }
    }