:root {
      color-scheme: dark;
      --bg: #07090d;
      --panel: #10141b;
      --panel-2: #151a23;
      --ink: #f5f7fb;
      --muted: #9aa4b2;
      --line: #293241;
      --soft: #1b2230;
      --accent: #7dd3fc;
      --accent-2: #5eead4;
      --danger: #f05252;
      --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    }
    html[data-theme="light"] {
      color-scheme: light;
      --bg: #f5f7fb;
      --panel: #ffffff;
      --panel-2: #f9fbff;
      --ink: #121826;
      --muted: #667085;
      --line: #d8deea;
      --soft: #edf1f7;
      --accent: #155eef;
      --accent-2: #0f766e;
      --danger: #b42318;
      --shadow: 0 18px 42px rgba(16, 24, 40, 0.10);
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      background:
        linear-gradient(180deg, rgba(125, 211, 252, 0.08), transparent 360px),
        var(--bg);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }
    header {
      position: sticky;
      top: 0;
      z-index: 2;
      background: color-mix(in srgb, var(--panel) 88%, transparent);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(18px);
    }
    .topbar {
      width: min(1440px, 100%);
      margin: 0 auto;
      min-height: 78px;
      padding: 14px 24px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 18px;
      min-width: 0;
    }
    .brand img {
      width: min(310px, 44vw);
      max-height: 46px;
      object-fit: contain;
      object-position: left center;
    }
    html[data-theme="dark"] .logo-light { display: none; }
    html[data-theme="light"] .logo-dark { display: none; }
    .title-block {
      min-width: 0;
      border-left: 1px solid var(--line);
      padding-left: 18px;
    }
    h1 {
      margin: 0;
      font-size: 18px;
      line-height: 1.2;
      letter-spacing: 0;
      font-weight: 650;
    }
    .subtitle {
      margin-top: 4px;
      color: var(--muted);
      font-size: 12px;
    }
    .controls {
      display: flex;
      gap: 10px;
      align-items: center;
      justify-content: flex-end;
      flex-wrap: wrap;
    }
    .control {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 38px;
      padding: 0 12px;
      border: 1px solid var(--line);
      background: var(--panel-2);
      color: var(--ink);
      border-radius: 8px;
    }
    .control label {
      color: var(--muted);
      font-size: 12px;
      white-space: nowrap;
    }
    select, button {
      border: 0;
      background: transparent;
      color: var(--ink);
      font: inherit;
    }
    select {
      min-width: 56px;
      color: var(--ink);
      background: var(--panel-2);
      font-weight: 650;
    }
    option {
      color: var(--ink);
      background: var(--panel);
    }
    html[data-theme="dark"] option {
      color: #f5f7fb;
      background: #10141b;
    }
    html[data-theme="light"] option {
      color: #121826;
      background: #ffffff;
    }
    select:focus, button:focus {
      outline: 2px solid var(--accent);
      outline-offset: 4px;
    }
    button {
      cursor: pointer;
      width: 38px;
      height: 38px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel-2);
      display: inline-grid;
      place-items: center;
    }
    .action-btn {
      width: auto;
      min-width: 38px;
      padding: 0 12px;
      gap: 8px;
      color: var(--ink);
      font-size: 12px;
      font-weight: 650;
    }
    main {
      width: min(1440px, 100%);
      margin: 0 auto;
      padding: 22px 24px 44px;
    }
    .metrics {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px;
      margin-bottom: 16px;
    }
    .alert-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-bottom: 16px;
    }
    .alert-card {
      min-height: 76px;
      padding: 13px 14px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: linear-gradient(180deg, color-mix(in srgb, var(--panel-2) 82%, var(--accent) 8%), var(--panel));
      box-shadow: var(--shadow);
    }
    .alert-card span {
      display: block;
      color: var(--muted);
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 8px;
    }
    .alert-card strong {
      display: block;
      font-size: 14px;
      line-height: 1.25;
    }
    .metric, .panel {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: 8px;
      box-shadow: var(--shadow);
    }
    .panel.is-fullscreen {
      position: fixed;
      inset: 18px;
      z-index: 28;
      display: flex;
      flex-direction: column;
      overflow: auto;
    }
    .panel.is-fullscreen .chart-wrap {
      flex: 1;
    }
    .panel.is-fullscreen canvas {
      height: min(72vh, 720px);
    }
    .metric {
      padding: 14px;
      min-height: 88px;
    }
    .metric-head {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 8px;
    }
    .metric span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      margin-bottom: 9px;
    }
    .metric strong {
      display: block;
      font-size: 23px;
      line-height: 1.1;
      font-variant-numeric: tabular-nums;
    }
    .layout {
      display: grid;
      grid-template-columns: minmax(0, 1.7fr) minmax(360px, 0.9fr);
      gap: 16px;
      align-items: stretch;
      margin-top: 20px;
    }
    .layout > .panel:first-child {
      display: flex;
      flex-direction: column;
    }
    .layout > .panel:first-child .chart-wrap {
      flex: 1;
      display: flex;
      min-height: 520px;
    }
    .layout > .panel:first-child .chart-wrap svg {
      height: 100%;
    }
    .stack {
      display: grid;
      gap: 16px;
    }
    .timeline {
      display: flex;
      gap: 2px;
      padding: 14px;
      min-height: 54px;
      align-items: stretch;
    }
    .timeline-segment {
      flex: 1 1 0;
      width: auto;
      height: 26px;
      min-width: 8px;
      border: 1px solid transparent;
      border-radius: 3px;
      cursor: pointer;
      opacity: 0.72;
      transition: transform 120ms ease, opacity 120ms ease, border-color 120ms ease;
    }
    .timeline-segment:hover, .timeline-segment.is-selected {
      opacity: 1;
      transform: translateY(-2px);
      border-color: var(--ink);
    }
    .micro-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      padding: 14px;
    }
    .signal-card, .flow-card {
      border: 1px solid var(--soft);
      border-radius: 8px;
      padding: 12px;
      background: linear-gradient(180deg, color-mix(in srgb, var(--panel-2) 78%, var(--accent) 8%), var(--panel));
    }
    .signal-card span, .flow-card span {
      display: block;
      color: var(--muted);
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 8px;
    }
    .signal-card strong, .flow-card strong {
      display: block;
      font-size: 22px;
      margin-bottom: 16px;
    }
    .card-top {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: 10px;
    }
    .info-btn {
      width: 22px;
      height: 22px;
      flex: 0 0 auto;
      border-radius: 999px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      line-height: 1;
      background: color-mix(in srgb, var(--panel-2) 82%, var(--accent) 8%);
    }
    .info-btn:hover {
      color: var(--ink);
      border-color: var(--accent);
    }
    .file-input {
      display: none;
    }
    .upload-status {
      color: var(--muted);
      font-size: 11px;
      max-width: 190px;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .signal-meter {
      height: 8px;
      border-radius: 999px;
      background: var(--soft);
      overflow: hidden;
    }
    .signal-meter i {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #164e91, #38bdf8);
    }
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 10px;
      padding: 14px;
    }
    .inspector {
      display: grid;
      gap: 12px;
      padding: 14px;
    }
    .inspector-kv {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }
    .kv {
      border: 1px solid var(--soft);
      border-radius: 6px;
      padding: 10px;
      background: color-mix(in srgb, var(--panel-2) 78%, transparent);
    }
    .kv span {
      display: block;
      color: var(--muted);
      font-size: 11px;
      margin-bottom: 5px;
    }
    .kv strong {
      display: block;
      font-size: 16px;
      font-variant-numeric: tabular-nums;
    }
    .prob-bars {
      display: grid;
      gap: 8px;
    }
    .prob-row {
      display: grid;
      grid-template-columns: 72px 1fr 54px;
      gap: 8px;
      align-items: center;
      color: var(--muted);
      font-size: 12px;
    }
    .prob-track {
      height: 8px;
      border-radius: 999px;
      overflow: hidden;
      background: var(--soft);
    }
    .prob-fill {
      height: 100%;
      border-radius: inherit;
    }
    .panel {
      overflow: hidden;
    }
    .panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      min-height: 48px;
      padding: 12px 14px;
      border-bottom: 1px solid var(--line);
      background: var(--panel-2);
    }
    .panel-tools {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .icon-btn {
      width: 28px;
      height: 28px;
      font-size: 13px;
      color: var(--muted);
    }
    .icon-btn:hover {
      color: var(--ink);
      border-color: var(--accent);
    }
    h2 {
      margin: 0;
      font-size: 14px;
      letter-spacing: 0;
      font-weight: 650;
    }
    .panel-note {
      color: var(--muted);
      font-size: 12px;
      font-variant-numeric: tabular-nums;
    }
    .chart-wrap {
      padding: 14px;
    }
    .range-controls {
      display: grid;
      grid-template-columns: 1fr 1fr auto;
      gap: 12px;
      align-items: end;
      padding: 12px 14px 0;
      border-top: 1px solid var(--soft);
    }
    .range-control {
      display: grid;
      gap: 6px;
    }
    .range-control label {
      color: var(--muted);
      font-size: 11px;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }
    .range-control input {
      width: 100%;
      accent-color: var(--accent);
    }
    .range-readout {
      color: var(--muted);
      font-size: 12px;
      font-variant-numeric: tabular-nums;
      white-space: nowrap;
    }
    .window-bar {
      padding: 0 14px 12px;
    }
    .window-bar svg {
      height: 42px;
      border: 1px solid var(--soft);
      border-radius: 8px;
      background: color-mix(in srgb, var(--panel-2) 72%, transparent);
      cursor: pointer;
    }
    .window-cell {
      opacity: 0.55;
    }
    .window-cell.is-active {
      opacity: 1;
    }
    svg {
      display: block;
      width: 100%;
      height: auto;
    }
    canvas {
      display: block;
      width: 100%;
      height: 380px;
      border-radius: 6px;
      background:
        radial-gradient(circle at 20% 15%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 32%),
        color-mix(in srgb, var(--panel-2) 76%, #000000);
      cursor: grab;
      touch-action: none;
    }
    .surface-wide canvas {
      height: 520px;
    }
    canvas:active {
      cursor: grabbing;
    }
    .scroll-frame {
      overflow-x: auto;
      overflow-y: hidden;
      scrollbar-color: var(--line) transparent;
    }
    .scroll-frame svg {
      max-width: none;
    }
    .mini-controls {
      display: inline-flex;
      gap: 6px;
      align-items: center;
    }
    .mini-controls button {
      width: 28px;
      height: 28px;
      font-size: 14px;
    }
    .tooltip {
      position: fixed;
      z-index: 20;
      pointer-events: none;
      padding: 7px 9px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: color-mix(in srgb, var(--panel) 94%, #000000);
      color: var(--ink);
      box-shadow: var(--shadow);
      font-size: 12px;
      line-height: 1.35;
      white-space: pre-line;
      opacity: 0;
      transform: translate(10px, 10px);
      transition: opacity 120ms ease;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      font-size: 12px;
      font-variant-numeric: tabular-nums;
    }
    th, td {
      padding: 10px 12px;
      border-bottom: 1px solid var(--soft);
      text-align: right;
      white-space: nowrap;
    }
    td {
      color: var(--ink);
    }
    th:first-child, td:first-child {
      text-align: left;
    }
    th {
      color: color-mix(in srgb, var(--ink) 72%, var(--muted));
      font-weight: 600;
      background: color-mix(in srgb, var(--panel-2) 88%, transparent);
    }
    .legend {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 0 14px 14px;
    }
    .legend span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--muted);
      font-size: 12px;
    }
    .swatch {
      width: 10px;
      height: 10px;
      border-radius: 2px;
      display: inline-block;
    }
    .split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 16px;
    }
    .wide {
      margin-top: 16px;
    }
    .heatmap-cell.is-selected, .price-point.is-selected {
      opacity: 1;
      stroke: var(--ink);
    }
    .command-overlay {
      position: fixed;
      inset: 0;
      z-index: 30;
      display: none;
      place-items: start center;
      padding-top: 12vh;
      background: rgba(0, 0, 0, 0.38);
      backdrop-filter: blur(8px);
    }
    .command-overlay.is-open {
      display: grid;
    }
    .info-overlay {
      position: fixed;
      inset: 0;
      z-index: 32;
      display: none;
      place-items: center;
      padding: 18px;
      background: rgba(0, 0, 0, 0.42);
      backdrop-filter: blur(8px);
    }
    .info-overlay.is-open {
      display: grid;
    }
    .info-modal {
      width: min(520px, 100%);
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .info-modal-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 14px 16px;
      border-bottom: 1px solid var(--line);
      background: var(--panel-2);
    }
    .info-modal-body {
      padding: 16px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }
    .command-box {
      width: min(620px, calc(100vw - 28px));
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .command-box input {
      width: 100%;
      padding: 16px;
      border: 0;
      border-bottom: 1px solid var(--line);
      background: var(--panel-2);
      color: var(--ink);
      font: inherit;
      outline: none;
    }
    .command-list {
      display: grid;
      gap: 4px;
      padding: 8px;
    }
    .command-item {
      width: 100%;
      height: auto;
      min-height: 42px;
      display: flex;
      align-items: center;
      justify-content: start;
      padding: 10px 12px;
      text-align: left;
      border-radius: 6px;
    }
    @media (max-width: 1080px) {
      .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .alert-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .layout, .split { grid-template-columns: 1fr; }
      .topbar { grid-template-columns: 1fr; }
      .controls { justify-content: flex-start; }
    }
    @media (max-width: 640px) {
      main { padding: 16px 12px 30px; }
      .topbar { padding: 12px; }
      .brand { align-items: flex-start; flex-direction: column; }
      .title-block { border-left: 0; padding-left: 0; }
      .metrics { grid-template-columns: 1fr; }
      th, td { padding: 8px 7px; }
    }