/* ==========================================================================
       Design Studio Interactive Preview Presets (theme.css provides base tokens)
       ========================================================================== */

    /* ==========================================================================
       Light Theme Warmth & Elevation Presets
       ========================================================================== */
    /* Preset 1: Topaz Porcelain (Warm Architectural Stone & Hairline Accents) */
    [data-theme="light"][data-light-preset="porcelain"],
    .preview-scope-porcelain {
      --bg-canvas: #F8F9FC;
      --bg-surface: #FFFFFF;
      --bg-surface-elevated: #F1F4F9;
      --bg-surface-highlight: #E4EBF5;
      --border-subtle: #E2E8F0;
      --border-strong: #CBD5E1;
      --text-primary: #0A192F;
      --text-secondary: #3B4B61;
      --text-muted: #64748B;
      --brand-primary-light: rgba(2, 101, 232, 0.09);
      --brand-primary-border: rgba(2, 101, 232, 0.28);
      --card-accent-border: #0265E8;
      --light-card-shadow: 0 2px 12px rgba(2, 101, 232, 0.05);
    }

    /* Preset 2: Azure & Ice (Crisp Contrast & Luminous High-Tech Pop) */
    [data-theme="light"][data-light-preset="azure"],
    .preview-scope-azure {
      --bg-canvas: #EDF3FA;
      --bg-surface: #FFFFFF;
      --bg-surface-elevated: #F4F8FD;
      --bg-surface-highlight: #DFECF9;
      --border-subtle: #D8E4F2;
      --border-strong: #B8CFE8;
      --text-primary: #0A1E38;
      --text-secondary: #334D6E;
      --text-muted: #5E7A9E;
      --brand-primary: #0265E8;
      --brand-primary-light: rgba(2, 101, 232, 0.12);
      --brand-primary-border: rgba(2, 101, 232, 0.32);
      --light-card-shadow: 0 4px 20px rgba(2, 101, 232, 0.08);
    }

    /* Preset 3: Warm Cashmere & Smoked Honey (Swiss Private Wealth) */
    [data-theme="light"][data-light-preset="cashmere"],
    .preview-scope-cashmere {
      --bg-canvas: #F9F7F4;
      --bg-surface: #FFFFFF;
      --bg-surface-elevated: #F3EFEA;
      --bg-surface-highlight: #E9E3D8;
      --border-subtle: #E7E2D9;
      --border-strong: #D3CABA;
      --text-primary: #1C1917;
      --text-secondary: #57534E;
      --text-muted: #78716C;
      --brand-primary: #0265E8;
      --color-amber: #B45309;
      --color-amber-bg: rgba(180, 83, 9, 0.12);
      --color-amber-border: rgba(180, 83, 9, 0.28);
      --light-card-shadow: 0 4px 18px rgba(68, 64, 60, 0.06);
    }

    /* Preset 4: Prismatic Strata Light (Jewel Top Ribbons & Multi-Tone Depth) */
    [data-theme="light"][data-light-preset="strata"],
    .preview-scope-strata {
      --bg-canvas: #F5F7FA;
      --bg-surface: #FFFFFF;
      --bg-surface-elevated: #EEF2F6;
      --bg-surface-highlight: #E0E7EF;
      --border-subtle: #DDE4ED;
      --border-strong: #C5D1E0;
      --text-primary: #0F172A;
      --text-secondary: #334155;
      --text-muted: #64748B;
      --brand-primary-light: rgba(2, 101, 232, 0.10);
      --brand-primary-border: rgba(2, 101, 232, 0.30);
      --light-card-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
    }

    /* Preset 0: Cool Slate Baseline */
    .preview-scope-slate {
      --bg-canvas: #F8FAFC;
      --bg-surface: #FFFFFF;
      --bg-surface-elevated: #F1F5F9;
      --bg-surface-highlight: #E2E8F0;
      --border-subtle: #E2E8F0;
      --border-strong: #CBD5E1;
      --text-primary: #0F172A;
      --text-secondary: #475569;
      --text-muted: #64748B;
      --brand-primary-light: rgba(2, 101, 232, 0.08);
      --brand-primary-border: rgba(2, 101, 232, 0.25);
      --light-card-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    }

    /* Micro Ribbon Accents for Light Theme */
    [data-theme="light"][data-light-preset="strata"] .mockup-card,
    .preview-scope-strata .light-lab-preview-card {
      position: relative;
      overflow: hidden;
    }
    [data-theme="light"][data-light-preset="strata"] .mockup-card::before,
    .preview-scope-strata .light-lab-preview-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #0265E8 0%, #38BDF8 50%, #0D9488 100%);
    }

    [data-theme="light"][data-light-preset="porcelain"] .mockup-card,
    .preview-scope-porcelain .light-lab-preview-card {
      border-top: 2.5px solid #0265E8;
    }

    [data-theme="light"][data-light-preset="azure"] .mockup-card,
    .preview-scope-azure .light-lab-preview-card {
      box-shadow: 0 4px 20px rgba(2, 101, 232, 0.09);
    }

    [data-theme="light"][data-light-preset="cashmere"] .mockup-card,
    .preview-scope-cashmere .light-lab-preview-card {
      box-shadow: 0 4px 18px rgba(68, 64, 60, 0.07);
    }

    /* Light Theme Lab UI Elements */
    .light-lab-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
      gap: 1.25rem;
      margin-top: 1.25rem;
    }

    .light-lab-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.2s ease;
      position: relative;
    }
    .light-lab-card:hover {
      border-color: var(--brand-primary);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    }
    .light-lab-card.active-choice {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 2px var(--brand-primary), 0 8px 24px rgba(2, 101, 232, 0.2);
    }

    .light-lab-preview-container {
      border-radius: 10px;
      padding: 14px;
      margin: 12px 0;
      background: var(--bg-canvas);
      border: 1px solid var(--border-subtle);
      color: var(--text-primary);
      transition: all 0.2s ease;
    }

    .light-lab-preview-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 14px;
      box-shadow: var(--light-card-shadow, 0 2px 8px rgba(0,0,0,0.05));
    }

    .palette-swatches-mini {
      display: flex;
      gap: 6px;
      margin: 8px 0;
    }
    .swatch-mini {
      flex: 1;
      height: 22px;
      border-radius: 4px;
      border: 1px solid rgba(0, 0, 0, 0.1);
      position: relative;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      background-color: var(--bg-canvas);
      color: var(--text-primary);
      font-family: var(--font-sans);
      line-height: 1.5;
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      overflow-x: clip;
      width: 100%;
      max-width: 100vw;
    }

    .app-wrapper {
      display: flex;
      flex-direction: column;
      min-height: 100vh;
      overflow-x: clip;
      width: 100%;
      max-width: 100%;
      box-sizing: border-box;
    }

    .main-content {
      flex: 1;
      display: flex;
      flex-direction: column;
      min-width: 0;
      width: 100%;
      max-width: 100%;
      box-sizing: border-box;
    }

    .container {
      width: 100%;
      max-width: 1360px;
      margin: 0 auto;
      padding: 0 1.25rem;
      box-sizing: border-box;
    }

    /* Pinned Unified Studio Header (Identical to finances.highvelocitylabs.dev) */
    .studio-pinned-header {
      position: -webkit-sticky;
      position: sticky;
      top: 0;
      z-index: 50;
      width: 100%;
      background: rgba(24, 27, 34, 0.96);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
      transition: background 0.2s ease, border-color 0.2s ease;
    }
    [data-theme="light"] .studio-pinned-header {
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    }

    /* Studio Nav Bar */
    .studio-nav {
      height: 56px;
      border-bottom: 1px solid var(--border-subtle);
    }

    .nav-inner {
      height: 56px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
    }

    .brand-wrapper {
      display: flex;
      align-items: center;
      gap: 0.875rem;
      flex-shrink: 0;
      min-width: 0;
    }

    .brand-group {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      text-decoration: none;
      color: var(--text-primary);
      min-width: 0;
    }

    .brand-title {
      font-weight: 800;
      font-size: 1.05rem;
      letter-spacing: -0.02em;
      white-space: nowrap;
    }

    .gem-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 3px 9px;
      border-radius: 9999px;
      background: var(--brand-primary-light);
      border: 1px solid var(--brand-primary-border);
      color: var(--brand-primary);
      font-size: 0.6875rem;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      flex-shrink: 0;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 7px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.8125rem;
      font-weight: 600;
      cursor: pointer;
      text-decoration: none;
      transition: all 0.15s ease;
      border: 1px solid transparent;
    }

    .btn-secondary {
      background: var(--bg-surface-elevated);
      color: var(--text-primary);
      border-color: var(--border-subtle);
    }
    .btn-secondary:hover {
      background: var(--bg-surface-highlight);
      border-color: var(--border-strong);
    }

    .btn-primary {
      background: var(--brand-primary);
      color: #FFFFFF;
      box-shadow: 0 2px 10px var(--brand-glow);
    }
    .btn-primary:hover {
      background: var(--brand-primary-hover);
    }

    /* Hero Banner */
    .hero {
      padding: 2.75rem 0 1.5rem;
    }

    .hero-title {
      font-size: clamp(1.75rem, 3.5vw, 2.5rem);
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 0.5rem;
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .gradient-gem {
      background: linear-gradient(135deg, #0265E8 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      color: var(--text-secondary);
      font-size: 1rem;
      max-width: 860px;
      line-height: 1.6;
    }

    /* Sticky Top Options Bar (Contained in pinned header) */
    .sticky-controls-bar {
      border-bottom: 1px solid var(--border-subtle);
      transition: background 0.2s ease, border-color 0.2s ease;
    }

    .sticky-controls-inner {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 0.5rem 1.25rem;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .sticky-controls-inner::-webkit-scrollbar {
      display: none;
    }

    .sticky-control-group {
      display: inline-flex;
      align-items: center;
      gap: 0.375rem;
      flex-shrink: 0;
    }

    .sticky-label {
      font-size: 0.65rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      white-space: nowrap;
    }

    .swatch-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      margin-right: 4px;
      vertical-align: middle;
      box-shadow: 0 0 4px rgba(0, 0, 0, 0.4);
    }

    /* ==========================================================================
       Comprehensive Responsive & Mobile Architecture (<= 768px & <= 480px)
       ========================================================================== */
    @media (max-width: 768px) {
      /* 1. Container Padding */
      .container {
        padding: 0 12px;
      }

      /* 2. Compact Nav */
      .studio-nav {
        height: 52px;
      }
      .nav-inner {
        height: 52px;
        padding: 0 12px;
      }
      .brand-wrapper {
        min-width: 0;
        flex: 1;
      }
      .brand-group {
        gap: 0.5rem;
      }
      .brand-title {
        font-size: 0.9375rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
      }
      .gem-badge {
        display: none !important;
      }
      .nav-link-desktop {
        display: none !important;
      }
      .header-actions {
        gap: 0.35rem;
      }
      .header-actions .btn {
        padding: 5px 10px;
        min-height: 34px;
        font-size: 0.75rem;
      }

      /* 3. Streamlined Controls Bar */
      .sticky-controls-bar {
        height: 44px;
      }
      [data-theme="light"] #sticky-light-preset-group {
        order: -1;
      }
      .sticky-controls-inner {
        height: 44px;
        padding: 4px 10px;
        gap: 0.5rem;
        -webkit-overflow-scrolling: touch;
      }
      .sticky-control-group {
        gap: 0.25rem;
      }
      .sticky-label {
        font-size: 0.6rem;
        letter-spacing: 0.02em;
      }
      .sticky-controls-inner .segment-btn {
        padding: 3px 8px;
        font-size: 0.6875rem;
        min-height: 28px;
      }
      .desktop-only-text {
        display: none !important;
      }

      /* 4. Hero Section with Generous Breathing Room */
      .hero {
        padding: 2.25rem 0 1.25rem;
        margin-top: 0.5rem;
      }
      .hero-title {
        font-size: 1.45rem;
        line-height: 1.25;
        gap: 6px;
      }
      .hero-desc {
        font-size: 0.875rem;
        line-height: 1.5;
      }

      /* 5. Hero Toolbar (Stack & Full Width) */
      .toolbar {
        padding: 0.875rem;
        margin: 1rem 0 1.75rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
      }
      .tool-group {
        flex-direction: column;
        align-items: stretch;
        gap: 0.35rem;
        width: 100%;
      }
      .tool-label {
        font-size: 0.65rem;
      }
      .segmented {
        width: 100%;
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
      }
      .segmented::-webkit-scrollbar {
        display: none;
      }
      .segmented .segment-btn {
        flex: 1 0 auto;
        justify-content: center;
        text-align: center;
        padding: 6px 10px;
        font-size: 0.71875rem;
        min-height: 34px;
      }

      /* 6. Section Heads */
      .studio-section {
        margin-bottom: 2.25rem;
      }
      .section-head {
        margin-bottom: 1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
      }
      .section-title {
        font-size: 1.15rem;
      }

      /* 7. ALL Grids Forced to 1-Column with Full Width */
      .palette-grid,
      .directions-grid,
      .mockup-grid,
      .brand-concepts-grid,
      .light-lab-grid,
      .chart-studio-grid,
      .f-palette-nav {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
      }

      .f-events-grid {
        grid-template-columns: 1fr !important;
      }

      .kpi-accent-showcase {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
      }

      /* 8. Card Padding Optimization (Save Screen Real Estate) */
      .palette-card,
      .direction-card,
      .mockup-card,
      .brand-concept-card,
      .light-lab-card,
      .chart-card,
      .f-palette-card {
        padding: 1rem 0.875rem !important;
      }

      /* 9. Light Theme Lab on Mobile */
      .light-lab-preview-container {
        padding: 8px !important;
        margin: 8px 0 !important;
      }
      .light-lab-preview-card {
        padding: 10px 8px !important;
      }

      /* 10. Inner 2-column grids inside mockup cards collapse on small screens */
      .mockup-subgrid,
      .mockup-card div[style*="grid-template-columns: 1fr 1fr"],
      .mockup-card div[style*="grid-template-columns:1fr 1fr"] {
        grid-template-columns: 1fr !important;
      }

      /* 11. Tables Horizontal Touch Scrolling */
      .matrix-card {
        border-radius: var(--radius-sm);
        margin: 0;
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        box-sizing: border-box !important;
        display: block !important;
      }
      .matrix-table {
        min-width: 480px;
        width: 100%;
      }
      .matrix-table th,
      .matrix-table td {
        padding: 8px 10px;
      }

      /* 12. Asset Class Uniformity Table & Mockups */
      div[style*="overflow-x: auto"] {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        box-sizing: border-box !important;
        display: block !important;
      }
      div[style*="overflow-x: auto"] table {
        min-width: 480px;
        width: 100%;
      }

      /* 12b. Global Mobile Viewport Containment */
      .container,
      .app-wrapper,
      .main-content,
      .studio-section,
      .card-glass,
      .f-canvas-mockup,
      .f-events-grid,
      #registry-grid,
      .toolbar {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
      }

      .f-canvas-mockup {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
      }

      /* 13. Code block & modals */
      .modal-box {
        padding: 1rem;
        max-width: 95vw;
      }
      pre.code-block {
        font-size: 0.7rem;
        padding: 0.75rem;
      }

      /* 14. Concept Hero SVG sizing */
      .concept-hero-badge {
        padding: 1.25rem 1rem;
      }
      .concept-hero-svg {
        width: 64px;
        height: 64px;
      }

      /* 15. Chart Canvases */
      .chart-canvas-wrap {
        height: 220px !important;
        max-width: 100%;
      }

      /* 16. Action buttons in Section Heads & Toast */
      .section-head > div:last-child {
        width: 100%;
      }
      .section-head > div:last-child .btn {
        width: 100%;
        justify-content: center;
      }
      .toast {
        left: 12px;
        right: 12px;
        bottom: 16px;
        text-align: center;
        justify-content: center;
      }
    }

    @media (max-width: 480px) {
      .hero-title {
        font-size: 1.3rem;
      }
      .kpi-accent-showcase {
        grid-template-columns: 1fr !important;
      }
      .matrix-table {
        min-width: 520px;
      }
      .btn {
        padding: 6px 10px;
      }
      .palette-swatches {
        gap: 4px;
      }
      .swatch {
        font-size: 0.5625rem;
      }
    }

    /* Studio Hero Toolbar */
    .toolbar {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 1rem 1.25rem;
      margin: 1.25rem 0 2.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    }

    .tool-group {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      flex-wrap: wrap;
    }

    .tool-label {
      font-size: 0.6875rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-right: 4px;
    }

    .segmented {
      display: inline-flex;
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: 8px;
      padding: 3px;
      gap: 2px;
    }

    .segment-btn {
      background: transparent;
      border: none;
      color: var(--text-secondary);
      padding: 5px 12px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 5px;
      transition: all 0.15s ease;
    }
    .segment-btn:hover {
      color: var(--text-primary);
    }
    .segment-btn.active {
      background: var(--brand-primary);
      color: #FFFFFF;
      box-shadow: 0 2px 8px var(--brand-glow);
    }

    /* Grid Sections */
    .studio-section {
      margin-bottom: 3.25rem;
    }

    .section-head {
      margin-bottom: 1.25rem;
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-subtle);
      padding-bottom: 0.75rem;
      flex-wrap: wrap;
      gap: 8px;
    }

    .section-title {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .section-sub {
      font-size: 0.8125rem;
      color: var(--text-secondary);
    }

    /* Palette Harmonizer Cards */
    .palette-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 1.25rem;
      margin-bottom: 2rem;
    }

    .palette-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 1.25rem;
      cursor: pointer;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }
    .palette-card:hover {
      border-color: var(--border-strong);
      transform: translateY(-2px);
    }
    .palette-card.active {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 2px var(--brand-primary-border), 0 8px 24px rgba(2, 101, 232, 0.15);
    }

    .palette-swatches {
      display: flex;
      gap: 8px;
      margin: 1rem 0;
    }
    .swatch {
      flex: 1;
      height: 38px;
      border-radius: 6px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-size: 0.625rem;
      font-weight: 700;
      color: #FFFFFF;
      text-shadow: 0 1px 2px rgba(0,0,0,0.4);
      position: relative;
      border: 1px solid rgba(255,255,255,0.12);
    }

    /* Direction Overview Cards */
    .directions-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.25rem;
      margin-bottom: 2.5rem;
    }

    .direction-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      position: relative;
      transition: all 0.2s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .direction-card.selected {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 2px var(--brand-primary-border), 0 8px 24px rgba(2, 101, 232, 0.15);
    }

    .direction-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1rem;
    }

    .direction-tag {
      font-size: 0.6875rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      padding: 3px 8px;
      border-radius: 4px;
      background: var(--bg-surface-elevated);
      color: var(--text-muted);
    }

    .direction-card.selected .direction-tag {
      background: var(--brand-primary-light);
      color: var(--brand-primary);
    }

    .direction-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--text-primary);
    }

    .direction-desc {
      font-size: 0.8125rem;
      color: var(--text-secondary);
      line-height: 1.55;
      margin-bottom: 1.25rem;
    }

    .icon-strip {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px;
      background: var(--bg-surface-elevated);
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      border: 1px solid var(--border-subtle);
    }

    .icon-box {
      width: 38px;
      height: 38px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 6px;
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      color: var(--brand-primary);
    }

    /* Icon Matrix Table */
    .matrix-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow-x: auto;
      box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    }

    .matrix-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.8125rem;
    }

    .matrix-table th {
      padding: 14px 18px;
      background: var(--bg-surface-elevated);
      border-bottom: 1px solid var(--border-subtle);
      font-weight: 700;
      font-size: 0.75rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .matrix-table td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-subtle);
      vertical-align: middle;
    }
    .matrix-table tr:last-child td {
      border-bottom: none;
    }
    .matrix-table tr:hover td {
      background: var(--bg-surface-highlight);
    }

    .domain-label {
      font-weight: 700;
      color: var(--text-primary);
      display: block;
      margin-bottom: 2px;
    }
    .domain-desc {
      font-size: 0.71875rem;
      color: var(--text-muted);
    }

    .preview-chip {
      width: 44px;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      transition: all 0.2s ease;
      cursor: pointer;
    }
    .preview-chip:hover {
      border-color: var(--brand-primary);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(2, 101, 232, 0.2);
    }

    /* Live Mockup Playground */
    .mockup-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
      gap: 1.5rem;
    }

    .mockup-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      position: relative;
    }

    .mockup-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.6875rem;
      font-weight: 700;
      padding: 3px 9px;
      border-radius: 5px;
      background: var(--brand-primary-light);
      color: var(--brand-primary);
      border: 1px solid var(--brand-primary-border);
      margin-bottom: 0.75rem;
    }

    .mockup-title {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 0.25rem;
      color: var(--text-primary);
    }

    .mockup-sub {
      font-size: 0.75rem;
      color: var(--text-muted);
      margin-bottom: 1.25rem;
    }

    /* Modal / Inspector Drawer */
    .code-modal {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 100;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(8px);
      align-items: center;
      justify-content: center;
      padding: 1rem;
    }
    .code-modal.active {
      display: flex;
    }

    .modal-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-strong);
      border-radius: var(--radius-lg);
      width: 100%;
      max-width: 580px;
      padding: 1.5rem;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }

    pre.code-block {
      background: var(--bg-canvas);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      padding: 1rem;
      font-family: var(--font-mono);
      font-size: 0.78125rem;
      color: #38BDF8;
      overflow-x: auto;
      margin: 1rem 0;
      line-height: 1.45;
    }

    /* Toast Notification */
    .toast {
      position: fixed;
      bottom: 24px;
      right: 24px;
      background: var(--brand-primary);
      color: #FFFFFF;
      padding: 10px 18px;
      border-radius: 8px;
      font-size: 0.8125rem;
      font-weight: 600;
      box-shadow: 0 6px 20px rgba(2, 101, 232, 0.4);
      transform: translateY(100px);
      opacity: 0;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      z-index: 200;
    }
    .toast.show {
      transform: translateY(0);
      opacity: 1;
    }

    /* Finances Iconography Explorations */
    .brand-concepts-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .brand-concept-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--card-radius);
      padding: 1.65rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      transition: all 0.2s ease;
      position: relative;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    .brand-concept-card:hover {
      border-color: var(--brand-primary);
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    }

    .concept-hero-badge {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1.75rem 1.5rem;
      background: #181b22;
      border: 1px solid var(--border);
      border-radius: 12px;
      margin-bottom: 0.25rem;
    }

    .concept-hero-svg {
      width: 96px;
      height: 96px;
      display: block;
      filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.35));
    }

    .concept-meta-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.5rem;
    }

    .concept-meta-theme {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--brand-primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .concept-preview-row {
      display: flex;
      flex-direction: column;
      gap: 0.65rem;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0.85rem;
    }

    .preview-context-label {
      font-size: 0.68rem;
      font-weight: 700;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.06em;
      margin-bottom: 0.25rem;
    }

    /* Simulated Browser Tab */
    .sim-tab-bar {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 6px;
      padding: 0.35rem 0.65rem;
      font-size: 0.75rem;
      color: var(--text-body);
      max-width: 100%;
      overflow: hidden;
    }

    .sim-tab-icon {
      width: 16px;
      height: 16px;
      flex-shrink: 0;
    }

    .sim-tab-title {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      flex: 1;
      font-weight: 500;
    }

    .sim-tab-close {
      font-size: 0.7rem;
      color: var(--text-muted);
      line-height: 1;
    }

    /* Simulated Sidebar Header */
    .sim-sidebar-brand {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      padding: 0.45rem 0.65rem;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 6px;
    }

    .sim-sidebar-title {
      font-size: 0.82rem;
      font-weight: 700;
      line-height: 1.15;
      color: var(--text-main);
    }

    .sim-sidebar-sub {
      font-size: 0.68rem;
      color: var(--text-muted);
      line-height: 1;
    }

    .concept-rationale {
      font-size: 0.83rem;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* Chart Studio & Color Brainstorm */
    .chart-studio-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .chart-card {
      background: var(--card-bg, var(--bg-surface));
      border: 1px solid var(--border, var(--border-subtle));
      border-radius: var(--card-radius, var(--radius-md));
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1rem;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    .chart-card-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 0.75rem;
    }

    .chart-card-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main, var(--text-primary));
      margin-bottom: 2px;
    }

    .chart-card-sub {
      font-size: 0.78rem;
      color: var(--text-secondary);
    }

    .chart-canvas-wrap {
      position: relative;
      width: 100%;
      height: 250px;
    }

    /* KPI Card Top-Border Accent Showcase */
    .kpi-accent-showcase {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
      gap: 1rem;
      margin-top: 1.25rem;
    }

    .kpi-accent-card {
      background: var(--card-bg, var(--bg-surface));
      border: 1px solid var(--border, var(--border-subtle));
      border-radius: var(--card-radius, var(--radius-md));
      padding: 1.25rem;
      position: relative;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    }

    .kpi-accent-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--card-accent-color, var(--brand-primary));
    }

    /* Forecasting Event Icon Palettes Section */
    .f-palette-nav {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 14px;
      margin-bottom: 1.5rem;
    }
    .f-palette-card {
      background: var(--bg-surface);
      border: 2px solid var(--border-subtle);
      border-radius: 12px;
      padding: 16px;
      cursor: pointer;
      transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .f-palette-card:hover {
      transform: translateY(-2px);
      border-color: var(--border-strong);
    }
    .f-palette-card.active {
      border-color: var(--brand-primary);
      background: var(--bg-surface-elevated);
      box-shadow: 0 8px 24px -6px rgba(2, 101, 232, 0.25);
    }
    .f-swatches-bar {
      display: flex;
      gap: 6px;
      margin-top: 10px;
    }
    .f-swatch-circle {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,0.25);
      box-shadow: 0 2px 4px rgba(0,0,0,0.15);
    }
    .f-events-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
      gap: 12px;
    }
    .f-event-card {
      background: var(--bg-surface-elevated);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 12px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 10px;
    }
    .f-shelf-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 3px 9px;
      border-radius: 6px;
      font-size: 0.75rem;
      font-weight: 600;
      white-space: nowrap;
      box-shadow: 0 1px 3px rgba(0,0,0,0.12);
    }
    .f-canvas-mockup {
      background: var(--bg-canvas, #090D16);
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      padding: 24px 16px;
      position: relative;
      overflow: hidden;
      margin-top: 12px;
    }
    .f-pin-g {
      cursor: pointer;
      transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }
    .f-pin-g:hover {
      transform: scale(1.12);
    }

    /* ==========================================================================
       HVL Brand Mark & Monogram Lab (Mobile-First Interactive Showcase)
       ========================================================================== */
    .hvl-logo-lab-stage {
      background: var(--bg-surface);
      border: 1px solid var(--brand-primary-border);
      border-radius: var(--radius-lg);
      padding: 1.25rem;
      margin-bottom: 1.5rem;
      box-shadow: 0 8px 28px rgba(2, 101, 232, 0.12);
    }

    .hvl-stage-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 0.75rem;
      padding-bottom: 1rem;
      margin-bottom: 1rem;
      border-bottom: 1px solid var(--border-subtle);
    }

    .hvl-stage-controls {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 0.75rem;
    }

    .hvl-stage-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr;
      gap: 1rem;
      align-items: stretch;
    }

    .hvl-stage-box {
      background: var(--bg-canvas);
      border: 1px solid var(--border-subtle);
      border-radius: 10px;
      padding: 1rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 0.75rem;
    }

    .hvl-stage-HeroSim {
      text-align: center;
      padding: 1.15rem 0.75rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
    }

    .hvl-track-heading {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.75rem;
      margin: 1.75rem 0 0.85rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid var(--border-subtle);
    }

    .hvl-track-title {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-primary);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .brand-concept-card.hvl-logo-card {
      cursor: pointer;
      user-select: none;
      -webkit-tap-highlight-color: transparent;
    }

    .brand-concept-card.hvl-logo-card.active-logo-pick {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 2px var(--brand-primary), 0 10px 28px rgba(2, 101, 232, 0.22);
    }

    .concept-hero-badge.surface-azure {
      background: #EDF3FA;
      border-color: #B8CFE8;
    }

    .concept-hero-badge.surface-bare {
      background: radial-gradient(circle at 50% 50%, rgba(2, 101, 232, 0.12), transparent 70%);
      border-style: dashed;
    }

    .hvl-scale-strip {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.5rem;
      padding: 0.5rem 0.65rem;
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 6px;
    }

    .hvl-scale-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.6875rem;
      color: var(--text-muted);
      font-family: var(--font-mono);
    }

    @media (max-width: 768px) {
      .hvl-stage-grid {
        grid-template-columns: 1fr !important;
        gap: 0.75rem !important;
      }
      .hvl-logo-lab-stage {
        padding: 0.95rem !important;
      }
      .hvl-stage-controls {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
      }
      .concept-hero-svg.hvl-candidate-svg {
        width: 88px !important;
        height: 88px !important;
      }
    }