:root, [data-theme="light"] {
      --font-display: 'Cabinet Grotesk', 'Inter', sans-serif;
      --font-body: 'Satoshi', 'Inter', sans-serif;
      --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
      --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
      --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
      --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
      --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
      --space-1: 0.25rem;
      --space-2: 0.5rem;
      --space-3: 0.75rem;
      --space-4: 1rem;
      --space-5: 1.25rem;
      --space-6: 1.5rem;
      --space-8: 2rem;
      --space-10: 2.5rem;
      --space-12: 3rem;
      --radius-sm: 0.375rem;
      --radius-md: 0.5rem;
      --radius-lg: 0.75rem;
      --radius-xl: 1rem;
      --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
      --color-bg: #f7f6f2;
      --color-surface: #f9f8f5;
      --color-surface-2: #fbfbf9;
      --color-divider: #dcd9d5;
      --color-border: #d4d1ca;
      --color-text: #28251d;
      --color-text-muted: #6f6b62;
      --color-text-faint: #a5a097;
      --color-primary: #01696f;
      --color-primary-hover: #0c4e54;
      --color-primary-highlight: #dbe7e6;
      --color-success: #437a22;
      --color-warning: #964219;
      --shadow-sm: 0 1px 2px rgba(40, 37, 29, 0.06);
      --shadow-md: 0 12px 24px rgba(40, 37, 29, 0.08);
    }

    [data-theme="dark"] {
      --color-bg: #171614;
      --color-surface: #1c1b19;
      --color-surface-2: #201f1d;
      --color-divider: #262523;
      --color-border: #393836;
      --color-text: #cdccca;
      --color-text-muted: #979591;
      --color-text-faint: #6c6a66;
      --color-primary: #4f98a3;
      --color-primary-hover: #227f8b;
      --color-primary-highlight: #2c3839;
      --color-success: #6daa45;
      --color-warning: #fdab43;
      --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
      --shadow-md: 0 12px 32px rgba(0,0,0,0.35);
    }

    *, *::before, *::after { box-sizing: border-box; }
    html {
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      text-rendering: optimizeLegibility;
      color-scheme: dark light;
    }
    body {
      margin: 0;
      min-height: 100dvh;
      font-family: var(--font-body);
      font-size: var(--text-base);
      line-height: 1.5;
      color: var(--color-text);
      background: var(--color-bg);
      overflow: hidden;
    }
    button, input, select { font: inherit; color: inherit; }
    button {
      border: 0;
      cursor: pointer;
      transition: background var(--transition-interactive), color var(--transition-interactive), border-color var(--transition-interactive), transform var(--transition-interactive);
    }
    button:hover { transform: translateY(-1px); }
    button:focus-visible, input:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 3px;
    }

    .app {
      display: grid;
      grid-template-columns: minmax(290px, 360px) 1fr;
      min-height: 100dvh;
    }

    .sidebar {
      position: relative;
      z-index: 2;
      display: flex;
      flex-direction: column;
      gap: var(--space-4);
      padding: var(--space-5);
      background: color-mix(in oklab, var(--color-surface) 88%, transparent);
      backdrop-filter: blur(18px);
      border-right: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      overflow: auto;
    }

    .brand {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      gap: var(--space-3);
      min-width: 0;
    }

    .logo {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--color-primary-highlight), color-mix(in oklab, var(--color-primary) 18%, var(--color-surface)));
      display: grid;
      place-items: center;
      box-shadow: var(--shadow-sm);
      border: 1px solid color-mix(in oklab, var(--color-primary) 20%, var(--color-border));
      flex-shrink: 0;
    }

    .logo svg { width: 24px; height: 24px; color: var(--color-primary); }

    .title-wrap h1 {
      margin: 0;
      font-family: var(--font-display);
      font-size: var(--text-lg);
      line-height: 1.1;
      letter-spacing: -0.03em;
    }

    .title-wrap p {
      margin: 0.15rem 0 0;
      color: var(--color-text-muted);
      font-size: var(--text-sm);
    }

    .theme-toggle {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: var(--color-surface-2);
      color: var(--color-text);
      border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      box-shadow: var(--shadow-sm);
      flex-shrink: 0;
    }

    .panel {
      padding: var(--space-4);
      border-radius: var(--radius-xl);
      background: color-mix(in oklab, var(--color-surface-2) 92%, transparent);
      border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
      box-shadow: var(--shadow-sm);
    }

    .panel h2 {
      margin: 0 0 var(--space-3);
      font-size: var(--text-sm);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--color-text-muted);
    }

    .field-grid {
      display: grid;
      gap: var(--space-3);
    }

    .field label {
      display: block;
      margin-bottom: var(--space-2);
      font-size: var(--text-sm);
      color: var(--color-text-muted);
    }

    .text-input {
      width: 100%;
      min-height: 46px;
      padding: 0 var(--space-3);
      border-radius: var(--radius-md);
      border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      background: var(--color-bg);
    }

    .actions {
      display: flex;
      gap: var(--space-3);
      flex-wrap: wrap;
    }

    .btn {
      min-height: 46px;
      padding: 0.75rem 1rem;
      border-radius: var(--radius-md);
      font-size: var(--text-sm);
      font-weight: 600;
    }

    .btn-primary {
      background: var(--color-primary);
      color: white;
    }

    .btn-primary:hover { background: var(--color-primary-hover); }

    .btn-secondary {
      background: var(--color-surface-2);
      border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
    }

    .chips {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2);
    }

    .chip {
      display: inline-flex;
      align-items: center;
      padding: 0.4rem 0.7rem;
      border-radius: 999px;
      font-size: var(--text-xs);
      background: color-mix(in oklab, var(--color-primary) 12%, var(--color-surface-2));
      color: var(--color-text);
      border: 1px solid color-mix(in oklab, var(--color-primary) 16%, transparent);
    }

    .chip-button {
      cursor: pointer;
      font: inherit;
    }

    .chip-button:hover {
      background: color-mix(in oklab, var(--color-primary) 20%, var(--color-surface-2));
    }

    .metrics {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: var(--space-3);
    }

    .metric {
      padding: var(--space-3);
      border-radius: var(--radius-lg);
      background: color-mix(in oklab, var(--color-surface) 88%, var(--color-bg));
      border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
    }

    .metric span {
      display: block;
      font-size: var(--text-xs);
      color: var(--color-text-muted);
      margin-bottom: 0.35rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .metric strong {
      font-size: var(--text-lg);
      font-variant-numeric: tabular-nums lining-nums;
      letter-spacing: -0.03em;
    }

    .layers {
      display: grid;
      gap: var(--space-2);
    }

    .layer-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
      font-size: var(--text-sm);
    }

    .layer-row input { accent-color: var(--color-primary); }

    .notes {
      margin: 0;
      padding-left: 1.1rem;
      color: var(--color-text-muted);
      font-size: var(--text-sm);
    }

    .notes li + li { margin-top: 0.35rem; }

    .viewport {
      position: relative;
      min-width: 0;
      background:
        radial-gradient(circle at top left, color-mix(in oklab, var(--color-primary) 14%, transparent), transparent 32%),
        linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 16%, transparent), transparent 24%),
        var(--color-bg);
    }

    #scene {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      display: block;
    }

    .hud {
      position: absolute;
      inset: var(--space-4);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      pointer-events: none;
    }

    .topbar, .bottombar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-3);
    }

    .floating-card {
      pointer-events: auto;
      max-width: min(420px, calc(100vw - 2rem));
      padding: var(--space-3) var(--space-4);
      border-radius: var(--radius-lg);
      background: color-mix(in oklab, var(--color-surface) 84%, transparent);
      backdrop-filter: blur(14px);
      border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      box-shadow: var(--shadow-md);
    }

    .map-popup {
      position: absolute;
      top: var(--space-4);
      left: var(--space-4);
      z-index: 3;
      width: min(360px, calc(100% - 2rem));
      max-height: min(70dvh, 560px);
      display: grid;
      grid-template-rows: auto 1fr;
      gap: var(--space-3);
      padding: var(--space-4);
      border-radius: var(--radius-xl);
      background: color-mix(in oklab, var(--color-surface) 92%, transparent);
      backdrop-filter: blur(16px);
      border: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      box-shadow: var(--shadow-md);
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: opacity var(--transition-interactive), transform var(--transition-interactive);
      overflow: hidden;
    }

    .map-popup.is-visible {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

    .map-popup-head {
      display: flex;
      align-items: start;
      justify-content: space-between;
      gap: var(--space-3);
    }

    .map-popup-kind {
      margin: 0 0 0.15rem;
      color: var(--color-text-faint);
      font-size: var(--text-xs);
      text-transform: uppercase;
      letter-spacing: 0.08em;
    }

    .map-popup-title {
      margin: 0;
      font-family: var(--font-display);
      font-size: var(--text-base);
      line-height: 1.1;
    }

    .map-popup-close {
      width: 2rem;
      height: 2rem;
      border-radius: 999px;
      background: color-mix(in oklab, var(--color-surface-2) 88%, transparent);
      border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
      color: var(--color-text-muted);
      font-size: 1.2rem;
      line-height: 1;
      display: grid;
      place-items: center;
      flex-shrink: 0;
    }

    .map-popup-body {
      overflow: auto;
      display: grid;
      gap: var(--space-3);
    }

    .popup-section {
      display: grid;
      gap: var(--space-2);
    }

    .popup-section h4 {
      margin: 0;
      font-size: var(--text-xs);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--color-text-faint);
    }

    .popup-grid {
      display: grid;
      grid-template-columns: minmax(110px, 140px) 1fr;
      gap: 0.45rem var(--space-2);
      font-size: var(--text-sm);
    }

    .popup-key {
      color: var(--color-text-muted);
      overflow-wrap: anywhere;
    }

    .popup-value {
      color: var(--color-text);
      overflow-wrap: anywhere;
      font-variant-numeric: tabular-nums lining-nums;
    }

    .floating-card p {
      margin: 0;
      color: var(--color-text-muted);
      font-size: var(--text-sm);
    }

    .legend {
      display: flex;
      flex-wrap: wrap;
      gap: var(--space-2);
    }

    .legend-item {
      display: inline-flex;
      align-items: center;
      gap: 0.45rem;
      padding: 0.4rem 0.7rem;
      border-radius: 999px;
      background: color-mix(in oklab, var(--color-surface-2) 88%, transparent);
      font-size: var(--text-xs);
      border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
    }

    .dot {
      width: 0.7rem;
      height: 0.7rem;
      border-radius: 999px;
      flex-shrink: 0;
    }

    .status {
      color: var(--color-text-muted);
      font-size: var(--text-sm);
      min-height: 1.5em;
    }

    .loading-progress {
      display: grid;
      gap: 0.35rem;
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height 220ms ease, opacity 220ms ease;
    }

    .loading-progress.is-visible {
      max-height: 4rem;
      opacity: 1;
    }

    .loading-head {
      display: flex;
      justify-content: space-between;
      gap: var(--space-2);
      font-size: var(--text-xs);
      color: var(--color-text-muted);
    }

    .progress-track {
      width: 100%;
      height: 0.46rem;
      border-radius: 999px;
      background: color-mix(in oklab, var(--color-surface-2) 76%, var(--color-bg));
      border: 1px solid color-mix(in oklab, var(--color-text) 10%, transparent);
      overflow: hidden;
    }

    .progress-bar {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--color-primary), color-mix(in oklab, var(--color-primary) 65%, #ffffff));
      transition: width 240ms cubic-bezier(0.16, 1, 0.3, 1);
    }

    .match-wrap {
      display: grid;
      gap: var(--space-2);
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height 220ms ease, opacity 220ms ease;
    }

    .match-wrap.is-visible {
      max-height: 11rem;
      opacity: 1;
    }

    .match-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-2);
    }

    .match-select {
      min-height: 5.8rem;
      padding: var(--space-2);
    }

    .range-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: var(--space-2);
    }

    .mono {
      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
      font-size: var(--text-xs);
      color: var(--color-text-faint);
    }

    .range {
      width: 100%;
      accent-color: var(--color-primary);
    }

    @media (max-width: 980px) {
      body { overflow: auto; }
      .app {
        grid-template-columns: 1fr;
        min-height: auto;
      }
      .sidebar {
        border-right: 0;
        border-bottom: 1px solid color-mix(in oklab, var(--color-text) 12%, transparent);
      }
      .viewport {
        min-height: 68dvh;
      }
      .map-popup {
        right: var(--space-4);
        left: var(--space-4);
        width: auto;
      }
      .topbar, .bottombar {
        flex-direction: column;
        align-items: stretch;
      }
    }