/* Tools composition only: the public design-system remains the single foundation. */
@import url('./design-system.css');

@layer tools {
  *, *::before, *::after { box-sizing: border-box; }
  html { background: var(--tf-bg); }
  body { margin: 0; min-height: 100vh; color: var(--tf-text); background: var(--tf-bg); font: var(--tf-text-base)/var(--tf-leading) var(--tf-font); -webkit-font-smoothing: antialiased; }
  body.menu-open { overflow: hidden; }
  [hidden] { display: none !important; }
  a { color: var(--tf-link); text-underline-offset: .2em; }
  :is(a, button, input, textarea, select, summary):focus-visible { outline: var(--tf-focus-ring); outline-offset: 4px; }
  img, svg { max-width: 100%; }
  :is(button, input, textarea, select) { font: inherit; }
  :is(h1, h2, h3) { color: var(--tf-text); font-weight: var(--tf-weight-medium); text-wrap: balance; overflow-wrap: anywhere; }
  :is(p, li, dd) { color: var(--tf-muted); overflow-wrap: break-word; }
  :is(p, li) strong { color: var(--tf-text); }
  :is(ul, ol) { padding-inline-start: 1.35rem; }
  [id] { scroll-margin-top: calc(var(--tf-header-height) + 24px); }
  :is(.page, .site-footer) { width: min(var(--tf-shell), calc(100% - 2 * var(--tf-header-gutter))); margin-inline: auto; }
  .page { margin-block: calc(env(safe-area-inset-top, 0px) + var(--tf-header-height) + 24px) 64px; }
  main, main > *, .tool-content, .tool-guide { min-width: 0; }
  .tools-main, .input-test-main, .keyboard-test-main { display: grid; gap: var(--tf-space-6); }

  /* Same public header geometry, with a small bilingual navigation controller. */
  .site-header { position: fixed; inset: 0 0 auto; z-index: 50; padding-top: env(safe-area-inset-top, 0px); background: var(--tf-bg); }
  .site-nav-link[aria-current="true"] { color: var(--tf-accent); }
  .locale-menu { position: relative; }
  .locale-menu-trigger { display: inline-flex; align-items: center; gap: var(--tf-space-2); min-height: 44px; padding: 0 10px; color: var(--tf-muted); background: transparent; border: 1px solid var(--tf-border); border-radius: var(--tf-radius-sm); cursor: pointer; }
  .locale-menu-trigger svg { color: var(--tf-accent); flex: none; }
  .locale-menu-trigger-code { font-size: .78rem; letter-spacing: .04em; font-weight: var(--tf-weight-medium); }
  .locale-menu-panel { position: absolute; inset-inline-end: 0; top: calc(100% + 8px); min-width: 210px; padding: var(--tf-space-2); display: grid; gap: var(--tf-space-1); border: 1px solid var(--tf-border); border-radius: var(--tf-radius); background: var(--tf-surface); box-shadow: 0 16px 32px #0004; }
  .locale-menu-option { display: flex; justify-content: space-between; align-items: center; gap: var(--tf-space-6); min-height: 44px; padding: 8px 12px; border-radius: var(--tf-radius-sm); color: var(--tf-text); text-decoration: none; }
  .locale-menu-option > span { font-size: var(--tf-text-xs); color: var(--tf-subtle); }
  .locale-menu-option[aria-current] { background: var(--tf-surface-raised); color: var(--tf-accent); }
  .locale-menu-option:hover { background: var(--tf-surface-raised); }
  .drawer-backdrop { position: fixed; inset: 0; z-index: 44; background: #0008; }
  .mobile-drawer { position: fixed; top: calc(env(safe-area-inset-top, 0px) + var(--tf-header-height) + 1px); inset-inline: var(--tf-header-gutter); z-index: 45; padding: var(--tf-space-4); max-height: calc(100dvh - var(--tf-header-height) - env(safe-area-inset-top, 0px) - 20px); overflow: auto; overscroll-behavior: contain; border: 1px solid var(--tf-border); border-radius: var(--tf-radius); background: var(--tf-surface); }
  .mobile-drawer nav { display: grid; gap: var(--tf-space-2); }
  .drawer-link { width: 100%; justify-content: start; }
  .drawer-link[aria-current="true"] { color: var(--tf-accent); }
  .drawer-footer { margin-top: var(--tf-space-4); padding-top: var(--tf-space-4); border-top: 1px solid var(--tf-border); }
  .site-footer { border-top: 1px solid var(--tf-border); padding-top: var(--tf-space-8); margin-bottom: var(--tf-space-8); }
  .site-footer-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: start; gap: var(--tf-space-6) var(--tf-space-12); }
  .site-footer-brand { max-width: 28rem; }
  .site-footer-copy { margin: var(--tf-space-3) 0 0; font-size: var(--tf-text-sm); }
  .site-footer-nav { display: flex; flex-wrap: wrap; gap: var(--tf-space-2) var(--tf-space-6); align-items: center; }
  .site-footer-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: var(--tf-text-sm); }
  .site-footer-copyright { grid-column: 1 / -1; margin: 0; color: var(--tf-subtle); font-size: var(--tf-text-xs); }

  /* An immediate choice or work area, then its explanation. */
  .tools-intro h1, .tool-intro h1, .keyboard-intro h1 { margin: var(--tf-space-2) 0 var(--tf-space-3); max-width: 24ch; font-size: clamp(2rem, 4vw, 3.25rem); line-height: 1.1; letter-spacing: -.045em; }
  .tool-lead { max-width: 65ch; margin: 0; color: var(--tf-muted); font-size: clamp(1rem, 1.5vw, 1.125rem); line-height: 1.5; }
  .tools-intro-note { margin: var(--tf-space-3) 0 0; }
  .tool-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0 var(--tf-space-3); margin-bottom: -8px; font-size: var(--tf-text-sm); color: var(--tf-subtle); }
  .tool-breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; }
  .tools-catalogue > h2 { margin: 0 0 var(--tf-space-4); }
  .tools-directory { list-style: none; padding: 0; margin: 0; border-block: 1px solid var(--tf-border); }
  .tools-directory li + li { border-top: 1px solid var(--tf-border); }
  .tools-directory .tf-tool-link { display: grid; grid-template-columns: 132px minmax(0, 1fr) auto; align-items: center; gap: var(--tf-space-8); padding: var(--tf-space-6) var(--tf-space-4); }
  .tools-directory-copy { display: grid; gap: var(--tf-space-2); }
  .tools-directory-copy > strong { font-size: clamp(1.25rem, 2vw, 1.65rem); line-height: 1.25; font-weight: var(--tf-weight-medium); letter-spacing: -.025em; }
  .tools-directory-copy > span { color: var(--tf-muted); font-size: var(--tf-text-base); line-height: 1.5; }
  .tools-directory-copy > span.tf-help { font-size: var(--tf-text-xs); color: var(--tf-subtle); }
  .tools-directory-action { display: flex; align-items: center; gap: var(--tf-space-4); white-space: nowrap; color: var(--tf-link); font-size: var(--tf-text-sm); }
  .tools-art { display: block; width: 132px; height: 100px; color: var(--tf-link); }
  .tools-context { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tf-space-12); padding-block: var(--tf-space-4); }
  .tools-context h2 { margin: 0 0 var(--tf-space-4); font-size: 1.4rem; line-height: 1.3; }
  .tools-play-link { max-width: none; border-top: 1px solid var(--tf-border); padding-top: var(--tf-space-6); }
  .tool-content, .tool-guide { width: 100%; }
  .tool-content > section, .tool-guide > section, .keyboard-method > section { margin-block: var(--tf-space-12); }
  .tool-content > section:first-child, .tool-guide > section:first-child { margin-top: 0; }
  .tool-content h2, .tool-guide h2, .keyboard-method h2 { margin: 0 0 var(--tf-space-4); font-size: 1.55rem; line-height: 1.3; letter-spacing: -.025em; }
  .tool-content h3, .tool-guide h3 { margin-block: var(--tf-space-6) var(--tf-space-3); font-size: var(--tf-text-lg); }
  .tool-content li + li, .tool-guide li + li { margin-top: var(--tf-space-3); }
  .tool-definitions { margin: 0; }
  .tool-definitions dt { color: var(--tf-text); font-weight: var(--tf-weight-medium); margin-top: var(--tf-space-6); }
  .tool-definitions dd { margin: var(--tf-space-2) 0 0; }
  .tool-table-wrap { overflow-x: auto; max-width: 100%; }
  .tool-table-wrap .tf-table { table-layout: auto; font-size: var(--tf-text-sm); }
  .tool-table-wrap td, .tool-table-wrap th { padding: var(--tf-space-3); border-bottom: 1px solid var(--tf-border); vertical-align: top; }
  .tool-actions, .tool-result-actions, .tool-series-controls { display: flex; flex-wrap: wrap; align-items: center; gap: var(--tf-space-3); margin-top: var(--tf-space-4); }
  .input-workspace, .keyboard-workspace { padding: var(--tf-space-6); min-width: 0; }
  .tool-toolbar, .keyboard-toolbar { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--tf-space-4); }
  .tool-toolbar .tf-field { min-width: min(100%, 16rem); }
  .tool-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--tf-space-6); padding-block: var(--tf-space-4); border-top: 1px solid var(--tf-border); }
  .tool-results > div, .tool-detail-grid > div { display: grid; gap: var(--tf-space-2); min-width: 0; align-content: start; }
  .tool-counter { display: block; color: var(--tf-text); font-size: 2rem; line-height: 1.2; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
  .tool-summary { padding-top: var(--tf-space-6); margin-top: var(--tf-space-6); border-top: 1px solid var(--tf-border); }
  .tool-summary h2, .keyboard-summary h2 { margin: 0 0 var(--tf-space-4); font-size: 1.5rem; }
  .tool-detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr)); gap: var(--tf-space-4); margin-block: var(--tf-space-4); }
  .tool-detail-grid strong { color: var(--tf-text); font-variant-numeric: tabular-nums; }
  .tool-detail-grid dt { color: var(--tf-muted); font-size: var(--tf-text-sm); }
  .tool-detail-grid dd { margin: 0; color: var(--tf-text); font-size: var(--tf-text-lg); font-variant-numeric: tabular-nums; }
  .tool-series-comparison { width: 100%; margin-block: var(--tf-space-4); overflow-x: auto; }
  .tool-series-comparison table { width: 100%; min-width: 480px; table-layout: fixed; border-collapse: collapse; }
  .tool-series-comparison :is(th, td) { padding: var(--tf-space-3); border-bottom: 1px solid var(--tf-border); text-align: start; vertical-align: top; overflow-wrap: normal; font-size: var(--tf-text-sm); }

  /* Mouse: keep the drawing and each observation in the same working area. */
  .mouse-test-stage { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--tf-space-6); margin-block: var(--tf-space-4); align-items: center; }
  .mouse-test-page .mouse-test-stage { grid-template-columns: minmax(0, 1fr); }
  .mouse-test-zone { display: grid; place-items: center; gap: var(--tf-space-2); min-height: 250px; padding: var(--tf-space-4); border: 1px solid var(--tf-control-border); border-radius: var(--tf-radius); background: var(--tf-bg); touch-action: none; user-select: none; -webkit-user-select: none; cursor: crosshair; text-align: center; }
  .mouse-test-zone:focus-visible { outline: var(--tf-focus-ring); outline-offset: 4px; }
  .mouse-test-zone > :is(p, span) { margin: 0; }
  .mouse-diagram { display: block; width: 120px; height: 155px; color: var(--tf-muted); }
  .mouse-button-list { display: grid; gap: var(--tf-space-2); padding: 0; margin: 0; list-style: none; }
  .mouse-button-list > div { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--tf-space-2); padding-block: var(--tf-space-2); border-bottom: 1px solid var(--tf-border); }
  .mouse-button-list dt { display: grid; gap: var(--tf-space-1); font-weight: var(--tf-weight-medium); }
  .mouse-button-list dd { margin: 0; color: var(--tf-muted); font-size: var(--tf-text-sm); }
  .mouse-outline { stroke: var(--tf-control-border); }
  .double-click-observations { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: var(--tf-space-3); }
  .double-click-observations > p { margin: 0; }
  .double-click-observations > .tf-badge { justify-self: start; }
  .double-click-observations > :is(.tool-results, .tf-help) { grid-column: 1 / -1; }
  .mouse-session-note { font-size: var(--tf-text-sm); color: var(--tf-muted); }

  /* Keyboard: free play and optional protocols share one focused workspace. */
  .keyboard-controls { display: flex; flex-wrap: wrap; align-items: end; gap: var(--tf-space-4); flex: 1; }
  .keyboard-controls .tf-field { min-width: min(100%, 10rem); flex: 1; }
  .keyboard-settings { flex: 1 1 100%; }
  .keyboard-settings[open] { margin-bottom: var(--tf-space-2); }
  .keyboard-instructions { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--tf-space-3); margin-block: var(--tf-space-4); }
  .keyboard-instructions p { margin: 0; }
  .keyboard-board { overflow-x: auto; padding: var(--tf-space-2); border-radius: var(--tf-radius); scroll-margin-block: var(--tf-space-4); }
  .keyboard-board:focus { outline: var(--tf-focus-ring); outline-offset: 3px; }
  .keyboard-board-inner { display: grid; min-width: 790px; gap: var(--tf-space-2); }
  .keyboard-board-inner.is-full { grid-template-columns: minmax(0, 1fr) 200px; gap: var(--tf-space-6); min-width: 1020px; }
  .keyboard-main-block { display: grid; gap: var(--tf-space-2); min-width: 0; }
  .keyboard-row { display: flex; gap: var(--tf-space-2); }
  .keyboard-row .tf-keycap { flex: 1 1 0; min-width: 0; min-height: 48px; }
  .keyboard-row .keyboard-key--medium { flex-grow: 1.5; }
  .keyboard-row .keyboard-key--long { flex-grow: 2; }
  .keyboard-row .keyboard-key--space { flex-grow: 6; }
  .keyboard-row:last-child { margin-top: var(--tf-space-2); }
  .keyboard-numpad { align-self: end; }
  .keyboard-numpad-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-rows: 48px; gap: var(--tf-space-2); }
  .keyboard-numpad-grid .tf-keycap { min-width: 0; }
  .keyboard-numpad-grid .keyboard-key--tall { grid-row: span 2; }
  .keyboard-numpad-grid .keyboard-key--wide { grid-column: span 2; }
  .keyboard-scroll-hint { margin: var(--tf-space-3) 0 0; }
  .keyboard-legend { display: flex; flex-wrap: wrap; gap: var(--tf-space-3) var(--tf-space-6); margin-block: var(--tf-space-4); font-size: var(--tf-text-sm); color: var(--tf-muted); }
  .keyboard-legend > span { display: inline-flex; align-items: center; gap: var(--tf-space-2); }
  .keyboard-results { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; align-items: center; gap: var(--tf-space-6); padding-block: var(--tf-space-4); border-top: 1px solid var(--tf-border); }
  .keyboard-results > div { display: grid; gap: var(--tf-space-1); min-width: 0; }
  .keyboard-results strong { display: block; font-size: 1.65rem; line-height: 1.2; color: var(--tf-text); overflow-wrap: anywhere; }
  .keyboard-count { font-variant-numeric: tabular-nums; }
  .keyboard-diagnostic-panel { border-top: 1px solid var(--tf-border); padding-block: var(--tf-space-4); margin-block: var(--tf-space-4); }
  .keyboard-diagnostic-panel > h2 { margin: 0 0 var(--tf-space-3); font-size: 1.25rem; }
  .keyboard-custom-combo { display: grid; gap: var(--tf-space-3); margin-top: var(--tf-space-4); }
  .keyboard-custom-combo .tf-button { align-self: end; }
  .keyboard-protocol { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 9rem), 1fr)); gap: var(--tf-space-3); list-style: none; margin: var(--tf-space-4) 0; padding: 0; }
  .keyboard-protocol-step { padding: var(--tf-space-3) 0; border-top: 2px solid var(--tf-border); color: var(--tf-subtle); }
  .keyboard-protocol-step > span { display: block; margin-top: var(--tf-space-1); font-size: var(--tf-text-sm); color: var(--tf-muted); }
  .keyboard-protocol-step.is-current { border-color: var(--tf-accent); color: var(--tf-text); }
  .keyboard-protocol-step.is-complete { border-color: var(--tf-success); color: var(--tf-text); }
  .keyboard-diagnostic-readout, .keyboard-live-results { display: flex; flex-wrap: wrap; align-items: center; gap: var(--tf-space-3) var(--tf-space-6); margin-block: var(--tf-space-3); }
  .keyboard-diagnostic-readout strong { color: var(--tf-text); font-variant-numeric: tabular-nums; }
  .keyboard-summary { border-top: 1px solid var(--tf-border); padding-top: var(--tf-space-6); }
  .keyboard-summary-stats { display: flex; flex-wrap: wrap; gap: var(--tf-space-6); }
  .keyboard-summary-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--tf-space-6); margin-block: var(--tf-space-6); }
  .keyboard-summary-columns h3 { margin: 0 0 var(--tf-space-3); font-size: var(--tf-text-base); }
  .keyboard-key-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; align-items: start; gap: var(--tf-space-2); }
  .keyboard-key-list li { color: var(--tf-muted); font: var(--tf-text-sm)/1.5 var(--tf-font); }
  .keyboard-key-list li + li { margin-top: 0; }
  .keyboard-exclusions { margin-top: var(--tf-space-4); }
  .keyboard-exclusion-list { list-style: none; margin: var(--tf-space-4) 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--tf-space-3); }
  .keyboard-exclusion-list li { display: flex; align-items: center; gap: var(--tf-space-3); }
  .keyboard-exclusion-list .tf-button { font-size: var(--tf-text-xs); }
  .keyboard-after { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: var(--tf-space-6); }
  .keyboard-help { flex: 1 1 24rem; max-width: var(--tf-reading-width); }

  /* Practical guides and an explicitly local, printable inspection sheet. */
  .tool-guide-summary { color: var(--tf-text); font-size: var(--tf-text-lg); }
  .tool-guide-steps { margin-block: var(--tf-space-6); }
  .tool-guide-steps > li { padding-inline-start: var(--tf-space-2); }
  .tool-guide-steps > li + li { margin-top: var(--tf-space-6); }
  .tool-guide-example { padding-block: var(--tf-space-4); margin-block: var(--tf-space-6); border-block: 1px solid var(--tf-border); }
  .tool-guide-example > :first-child { margin-top: 0; }
  .tool-guide-related { margin-top: var(--tf-space-8); padding-top: var(--tf-space-6); border-top: 1px solid var(--tf-border); }
  .tool-checksheet { padding-top: var(--tf-space-6); border-top: 1px solid var(--tf-border); }
  .tool-checksheet-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tf-space-4); margin-block: var(--tf-space-6); }
  .tool-checklist { list-style: none; padding: 0; }
  .tool-checklist li + li { margin-top: 0; }
  .tool-checklist label { display: flex; align-items: baseline; gap: var(--tf-space-3); min-height: 44px; padding-block: var(--tf-space-2); cursor: pointer; }
  .tool-checklist input[type="checkbox"] { flex: 0 0 18px; width: 18px; height: 18px; margin: 0; accent-color: var(--tf-accent); }
  .tool-checksheet-notes { width: 100%; min-height: 110px; resize: vertical; }
  #checksheet > label.tf-field + label.tf-field { margin-top: var(--tf-space-4); }
  .tool-print-report, .tool-print-value { display: none; }
  .keyboard-diagnostic-summary { white-space: pre-line; font-size: var(--tf-text-sm); }

  @media (max-width: 1020px) {
    .site-actions .site-cta { display: none; }
    .site-footer-inner { grid-template-columns: minmax(0, 1fr); gap: var(--tf-space-6); }
  }
  @media (max-width: 900px) {
    .tools-directory .tf-tool-link { grid-template-columns: 96px minmax(0, 1fr); gap: var(--tf-space-3) var(--tf-space-6); }
    .tools-art { width: 96px; height: 84px; grid-row: span 2; }
    .tools-directory-action { grid-column: 2; }
  }
  @media (max-width: 600px) {
    .page { margin-top: calc(env(safe-area-inset-top, 0px) + var(--tf-header-height) + 16px); margin-bottom: var(--tf-space-12); }
    .tools-main, .input-test-main, .keyboard-test-main { gap: var(--tf-space-4); }
    .tools-intro h1, .tool-intro h1, .keyboard-intro h1 { font-size: clamp(1.9rem, 8vw, 2.35rem); }
    .tools-directory .tf-tool-link { grid-template-columns: 60px minmax(0, 1fr); padding: var(--tf-space-6) 0; gap: var(--tf-space-3) var(--tf-space-4); }
    .tools-art { width: 60px; height: 56px; align-self: start; }
    .tools-directory-copy > span { font-size: var(--tf-text-sm); }
    .tools-directory-action { white-space: normal; }
    .tools-context, .keyboard-summary-columns, .tool-checksheet-meta { grid-template-columns: minmax(0, 1fr); gap: var(--tf-space-6); }
    .input-workspace, .keyboard-workspace { padding: var(--tf-space-4); }
    .tool-toolbar { gap: var(--tf-space-3); }
    .tool-toolbar > .tf-field { flex: 1 1 100%; }
    .tool-results { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tf-space-4); }
    .tool-counter { font-size: 1.65rem; }
    .mouse-test-stage { grid-template-columns: minmax(0, 1fr); gap: var(--tf-space-4); }
    .mouse-test-zone { min-height: 176px; grid-template-columns: 76px minmax(0, 1fr); gap: var(--tf-space-3); text-align: start; }
    .mouse-diagram { width: 76px; height: 100px; grid-row: 1; }
    .mouse-test-zone > :not(svg) { grid-column: 2; }
    .mouse-test-zone > .tf-help { align-self: start; grid-column: 1 / -1; }
    .mouse-test-zone > strong { font-size: var(--tf-text-sm); }
    .mouse-button-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tf-space-2) var(--tf-space-4); }
    .mouse-button-list > div { align-items: start; flex-direction: column; gap: var(--tf-space-1); }
    .mouse-button-list dt { font-size: var(--tf-text-sm); }
    .mouse-button-list dt .tf-help { display: inline; }
    .keyboard-toolbar > .tf-field { flex: 1 1 100%; }
    .keyboard-toolbar > .tf-button { width: 100%; }
    .keyboard-controls { flex-direction: column; align-items: stretch; }
    .keyboard-results { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--tf-space-3); }
    .keyboard-results > .tf-button { grid-column: 1 / -1; justify-self: start; }
    .keyboard-results strong { font-size: 1.5rem; }
    .keyboard-legend { gap: var(--tf-space-3); }
    .keyboard-legend > span { gap: var(--tf-space-1); }
    .keyboard-protocol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .tool-content > section, .tool-guide > section { margin-block: var(--tf-space-8); }
    .tool-series-comparison :is(th, td) { padding: var(--tf-space-2); }
    .keyboard-custom-combo .tf-button { align-self: start; }
  }
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
  }
}

/* A disclosure is a layout boundary: long translations must wrap at 320 px. */
:is(.keyboard-workspace, .input-workspace, .tool-content) .tf-disclosure-trigger { max-width: 100%; white-space: normal; text-align: start; }
:is(.keyboard-workspace, .input-workspace) summary.tf-disclosure-trigger:not(:has(svg))::after { content: ''; flex: 0 0 7px; width: 7px; height: 7px; margin-inline-start: 4px; border-inline-end: 1.5px solid currentColor; border-block-end: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); }
:is(.keyboard-workspace, .input-workspace) details[open] > summary.tf-disclosure-trigger:not(:has(svg))::after { transform: rotate(225deg) translate(-2px, -2px); }
.site-nav-link[aria-current="true"], .drawer-link[aria-current="true"] { color: var(--tf-accent); }
.tool-series-comparison table.tf-table { min-width: 480px; table-layout: fixed; }
.tool-series-comparison thead th:first-child { width: 30%; }

/* Printing is a local user action; only the selected report or check sheet is shown. */
@media print {
  @page { size: A4; margin: 14mm; background: #fff; }
  :root { color-scheme: light !important; --tf-text: #111; --tf-muted: #333; --tf-subtle: #444; --tf-bg: #fff; --tf-surface: #fff; --tf-surface-raised: #fff; --tf-link: #111; --tf-border: #aaa; --tf-control-border: #888; --tf-accent: #111; --tf-success: #111; }
  html, body { margin: 0 !important; padding: 0 !important; background: #fff !important; color-scheme: light !important; color: #111 !important; font: 10pt/1.4 Arial, sans-serif !important; }
  .page { width: auto !important; margin: 0 !important; }
  main { display: block !important; }
  .site-header, .site-footer, .tf-skip-link, .mobile-drawer, .drawer-backdrop, .tool-no-print, noscript { display: none !important; }
  :is(h1, h2, h3) { break-after: avoid; color: #111 !important; }
  :is(p, li, dd, strong, a) { color: #111 !important; }
  p, li { orphans: 2; widows: 2; }
  .keyboard-test-page main > :not(#keyboard-summary), .keyboard-test-page #keyboard-summary .tool-actions { display: none !important; }
  .keyboard-test-page #keyboard-summary { display: block !important; padding: 0; border: 0; }
  .keyboard-test-page .keyboard-print-context { display: block; }
  .keyboard-summary-columns { display: block !important; margin-block: 4mm !important; }
  .keyboard-summary-columns > div + div { margin-top: 4mm; }
  .keyboard-summary-columns h3 { margin: 0 0 1mm; }
  .keyboard-summary-columns p { margin: 0 0 2mm; }
  .keyboard-summary h2 { font-size: 18pt; }
  .keyboard-key-list { gap: 2mm !important; }
  .keyboard-key-list li { font-size: 9pt !important; }
  body:has(#input-print-report:not(:empty)) main > :not(.input-workspace):not(#input-print-report), body:has(#input-print-report:not(:empty)) .input-workspace > :not(#input-print-report) { display: none !important; }
  body:has(#input-print-report:not(:empty)) .input-workspace { padding: 0; border: 0; }
  #input-print-report:not(:empty) { display: block !important; margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; font: 10pt/1.5 Arial, sans-serif; color: #111; background: #fff; }
  .tool-checksheet-page main > :not(.tool-content), .tool-checksheet-page .tool-content > :not(#checksheet) { display: none !important; }
  .tool-checksheet-page .tool-content { max-width: none; }
  .tool-checksheet-page #checksheet { margin: 0; padding: 0; border: 0; }
  #checksheet h2 { margin: 0 0 3mm; font-size: 18pt; }
  #checksheet h3 { margin: 4mm 0 1.5mm; font-size: 11pt; }
  .tool-checksheet-meta { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 2mm 6mm !important; margin-block: 3mm !important; }
  #checksheet .tf-field { display: grid; gap: 1mm; font-size: 9pt; }
  #checksheet .tool-print-value { display: block; min-height: 4mm; white-space: pre-wrap; overflow-wrap: anywhere; border-bottom: 1px solid #aaa; color: #111; }
  #checksheet textarea + .tool-print-value { min-height: 12mm; }
  #checksheet :is(input:not([type="checkbox"]), textarea, button) { display: none !important; }
  .tool-checklist { margin: 1.5mm 0 !important; }
  .tool-checklist label { min-height: 0 !important; padding-block: .8mm !important; font-size: 9pt; gap: 2mm !important; break-inside: avoid; }
  .tool-checklist input[type="checkbox"] { accent-color: #111; color-scheme: light !important; appearance: auto; print-color-adjust: exact; -webkit-print-color-adjust: exact; width: 3.5mm; height: 3.5mm; flex-basis: 3.5mm; }
}