:root {
  /* Color: Background */
  --color-canvas: #F4F0E8;
  --color-surface: #FFFDF8;
  --color-surface-muted: #ECE7DE;

  /* Color: Text */
  --color-ink: #171613;
  --color-ink-muted: #68645D;
  --color-on-brand: #FFFDF8;

  /* Color: Brand */
  --color-brand: #B8431D;
  --color-brand-hover: #A53B18;
  --color-brand-active: #8E3215;
  --color-accent-yellow: #DDAA28;
  --color-accent-blue: #2C55C7;

  /* Color: Semantic */
  --color-success: #2F6B46;
  --color-success-bg: #EBF3ED;
  --color-warning: #6B4F00;
  --color-warning-bg: #FFF4CC;
  --color-danger: #B42318;
  --color-danger-bg: #FDE8E7;

  /* Color: Border */
  --color-border-subtle: #CFC9BF;
  --color-border-control: #8B857C;

  /* Color: Disabled */
  --color-disabled-bg: #E4DFD6;
  --color-disabled-text: #5F5A53;

  /* Color: Focus */
  --color-focus-inner: #FFFDF8;
  --color-focus-outer: #2C55C7;

  /* Color: Overlay */
  --color-overlay: rgb(23 22 19 / 0.56);

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Radius */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  --font-size-meta: 0.875rem;
  --font-size-body: 1rem;
  --font-size-ui: 1rem;
  --font-size-subheading: 1.25rem;
  --font-size-heading: 1.75rem;
  --font-size-display: clamp(2.25rem, 8vw, 3.5rem);

  /* Motion */
  --motion-fast: 140ms;
  --motion-normal: 200ms;
  --motion-success: 320ms;

  /* Shadow */
  --shadow-card: 0 8px 24px rgb(23 22 19 / 0.08);

  /* Layout */
  --layout-max: 1200px;
  --control-target-min: 44px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html {
  color-scheme: light;
  background: var(--color-canvas);
  scroll-padding-bottom: calc(112px + var(--safe-bottom));
}
body {
  min-width: 0;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.dialog-open { overflow: hidden; }
button, input, select { font: inherit; }
button, a, summary, input, select { -webkit-tap-highlight-color: transparent; }
:where(button, input, select, summary, a[href], [tabindex]):not([tabindex="-1"]) {
  scroll-margin-block-start: var(--space-4);
  scroll-margin-block-end: calc(112px + var(--safe-bottom));
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus-inner);
  outline-offset: 0;
  box-shadow: 0 0 0 4px var(--color-focus-outer);
}
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.app-header,
.app-footer,
.app-shell,
.update-notice {
  width: min(calc(100% - var(--space-6)), var(--layout-max));
  margin-inline: auto;
}
.app-header {
  min-height: 76px;
  padding-block: max(var(--space-4), env(safe-area-inset-top)) var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.brand-lockup {
  min-width: 0;
  min-height: var(--control-target-min);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink);
  text-decoration: none;
}
.brand-lockup > span:last-child { min-width: 0; display: grid; line-height: 1.15; }
.brand-lockup strong { font-size: var(--font-size-body); font-weight: 800; }
.brand-lockup small { margin-top: var(--space-1); color: var(--color-ink-muted); font-size: var(--font-size-meta); letter-spacing: .08em; }
.brand-mark {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-1);
}
.brand-mark i { display: block; border-radius: 35%; background: var(--color-brand); }
.brand-mark i:nth-child(2) { background: var(--color-accent-yellow); }
.brand-mark i:nth-child(3) { background: var(--color-accent-blue); }
.brand-mark i:nth-child(4) { background: var(--color-ink); }
.brand-mark-small { width: 36px; height: 36px; }
.brand-mark-hero { width: clamp(112px, 28vw, 190px); height: clamp(112px, 28vw, 190px); gap: var(--space-3); transform: rotate(3deg); }
.brand-mark-hero i { border-radius: var(--radius-lg); }

.update-notice {
  position: sticky;
  top: var(--space-2);
  z-index: 30;
  margin-bottom: var(--space-4);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border: 2px solid var(--color-accent-blue);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.app-shell { padding-bottom: calc(108px + var(--safe-bottom)); }
.mobile-step-progress { margin: var(--space-2) 0 var(--space-5); }
.mobile-step-progress > div { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.mobile-step-progress span { color: var(--color-ink-muted); font-size: var(--font-size-meta); font-weight: 600; }
.mobile-step-progress strong { font-size: var(--font-size-subheading); }
.mobile-completed-steps { margin-top: var(--space-3); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-sm); background: var(--color-surface); }
.mobile-completed-steps summary { padding: var(--space-2) var(--space-3); font-size: var(--font-size-meta); }
.mobile-completed-steps > div { padding: 0 var(--space-3) var(--space-3); display: grid; gap: var(--space-2); }
.step-progress-track { height: 6px; margin-top: var(--space-2); display: block; overflow: hidden; border-radius: var(--radius-pill); background: var(--color-surface-muted); }
.step-progress-track > span { width: 25%; height: 100%; display: block; background: var(--color-brand); transition: width var(--motion-normal) ease; }
.stepper { display: none; }

.step-panel { display: none; }
.step-panel.active { display: block; animation: panel-in var(--motion-normal) ease-out; }
@keyframes panel-in { from { opacity: 0; transform: translateY(var(--space-2)); } }
.section-heading { margin: 0 0 var(--space-5); }
.section-heading h2 { margin: 0; font-size: var(--font-size-heading); line-height: 1.3; }
.section-heading p { max-width: 68ch; margin: var(--space-2) 0 0; color: var(--color-ink-muted); }
.inline-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-4); }
.selection-hero {
  min-height: min(46dvh, 420px);
  padding-block: var(--space-4) var(--space-6);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-5);
}
.eyebrow { margin: 0 0 var(--space-3); color: var(--color-brand); font-size: var(--font-size-meta); font-weight: 700; letter-spacing: .12em; }
.hero-copy h2 { max-width: 13ch; margin: 0; font-size: var(--font-size-display); font-weight: 800; line-height: 1.15; letter-spacing: -.025em; }
.hero-copy > p:last-child { max-width: 42ch; margin: var(--space-4) 0 0; color: var(--color-ink-muted); }

.drop-zone {
  min-height: 232px;
  padding: var(--space-5);
  display: grid;
  align-content: start;
  gap: var(--space-4);
  border: 2px solid var(--color-border-control);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  transition: border-color var(--motion-fast), background var(--motion-fast), transform var(--motion-fast);
}
.drop-zone.dragging {
  border-color: var(--color-accent-blue);
  background: color-mix(in srgb, var(--color-accent-blue) 8%, var(--color-surface));
  transform: translateY(-2px);
}
.drop-zone[data-selection-state="selected"] { border-color: var(--color-success); background: var(--color-success-bg); }
.drop-zone[data-selection-state="replacing"] { border-color: var(--color-accent-blue); }
.drop-zone input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.selection-state-header { min-width: 0; display: grid; grid-template-columns: 64px minmax(0, 1fr); align-items: center; gap: var(--space-4); }
.selection-summary { min-width: 0; }
.selection-summary strong { display: block; font-size: var(--font-size-subheading); }
.selection-summary small { display: block; margin-top: var(--space-1); color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.drop-icon { width: 64px; height: 64px; display: grid; place-items: center; border-radius: var(--radius-md); background: var(--color-brand); color: var(--color-on-brand); font-size: 2rem; line-height: 1; }
.drop-zone[data-selection-state="selected"] .drop-icon,
.drop-zone[data-selection-state="replacing"] .drop-icon { border: 2px solid var(--color-success); background: var(--color-success-bg); color: var(--color-success); font-weight: 800; }
.drop-zone[data-selection-state="loading"] .drop-icon { animation: loading-pulse 1s ease-in-out infinite alternate; }
@keyframes loading-pulse { to { opacity: .62; transform: scale(.94); } }
.selection-picker-button { width: 100%; min-height: 48px; }
.selection-preview-grid { display: grid; gap: var(--space-3); }
.selection-preview-grid.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.selection-preview-item { min-width: 0; margin: 0; overflow: hidden; border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface); }
.selection-preview-grid.single .selection-preview-item { display: grid; grid-template-columns: minmax(104px, 34%) minmax(0, 1fr); }
.selection-preview-media { min-height: 104px; display: grid; place-items: center; overflow: hidden; background: var(--color-ink); }
.selection-preview-grid.single .selection-preview-media { height: 128px; }
.selection-preview-grid.four .selection-preview-media { height: clamp(100px, 25vw, 150px); }
.selection-preview-media canvas { display: block; width: auto; height: auto; max-width: 100%; max-height: 100%; }
.selection-preview-caption { min-width: 0; padding: var(--space-3); display: grid; align-content: center; gap: var(--space-1); }
.selection-preview-caption strong { overflow-wrap: anywhere; font-size: var(--font-size-body); }
.selection-preview-caption small { color: var(--color-ink-muted); font-size: var(--font-size-meta); }

button,
.secondary-link {
  min-height: var(--control-target-min);
  padding: 10px var(--space-4);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: var(--color-ink);
  background: var(--color-surface-muted);
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
button.primary { border-color: var(--color-brand); background: var(--color-brand); color: var(--color-on-brand); }
button.primary:hover { border-color: var(--color-brand-hover); background: var(--color-brand-hover); }
button.primary:active { border-color: var(--color-brand-active); background: var(--color-brand-active); }
button.secondary { border-color: var(--color-border-control); background: var(--color-surface); }
button.tertiary,
button.ghost { border-color: transparent; background: transparent; color: var(--color-accent-blue); text-decoration: underline; text-underline-offset: .18em; }
button.danger { border-color: var(--color-danger); background: var(--color-danger-bg); color: var(--color-danger); }
button.small { min-height: var(--control-target-min); padding: var(--space-2) var(--space-3); font-size: var(--font-size-meta); }
button:disabled { border-color: var(--color-disabled-bg); background: var(--color-disabled-bg); color: var(--color-disabled-text); cursor: not-allowed; opacity: 1; }
.wide-button { width: 100%; }

.privacy-note,
.info-strip,
.alert {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-left: 6px solid var(--color-accent-blue);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}
.privacy-note { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-3); }
.privacy-note strong { color: var(--color-success); }
.alert.error { border-color: var(--color-danger); background: var(--color-danger-bg); color: var(--color-danger); }
.install-guide,
.guide-settings,
.file-save-details {
  margin-top: var(--space-4);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}
details > summary { min-height: var(--control-target-min); padding: var(--space-3) var(--space-4); cursor: pointer; font-weight: 600; }
.install-guide p { margin: 0; padding: 0 var(--space-4) var(--space-3); color: var(--color-ink-muted); }

.compact-grid { display: grid; gap: var(--space-3); margin-bottom: var(--space-3); }
.single-editor-layout { display: grid; gap: var(--space-4); }
.editor-stage-column { min-width: 0; }
.editor-controls { min-width: 0; display: grid; gap: var(--space-4); align-content: start; }
.control-section, .nudge-settings { padding: var(--space-4); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface); }
.control-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.control-title-row h3 { margin: 0; font-size: var(--font-size-subheading); }
.control-title-row output { color: var(--color-brand-active); font-weight: 700; }
.zoom-controls { margin-top: var(--space-3); display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px; align-items: center; gap: var(--space-2); }
.icon-control { width: 44px; min-height: 44px; padding: 0; font-size: 20px; line-height: 1; }
.nudge-settings { margin-top: 0; }
.nudge-settings summary { margin: calc(-1 * var(--space-4)); margin-bottom: 0; }
.nudge-settings p { margin: var(--space-3) 0; color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.nudge-grid { width: 148px; margin-inline: auto; display: grid; grid-template: repeat(3, 44px) / repeat(3, 44px); gap: var(--space-2); }
.nudge-grid button { width: 44px; min-height: 44px; padding: 0; line-height: 1; }
.nudge-grid button:nth-child(1) { grid-area: 1 / 2; }
.nudge-grid button:nth-child(2) { grid-area: 2 / 1; }
.nudge-grid button:nth-child(3) { grid-area: 2 / 3; }
.nudge-grid button:nth-child(4) { grid-area: 3 / 2; }
label > span, .export-settings label > span { display: block; margin-bottom: var(--space-2); color: var(--color-ink-muted); font-size: var(--font-size-body); font-weight: 600; }
select,
input[type="number"] {
  width: 100%;
  min-height: var(--control-target-min);
  padding: 9px var(--space-3);
  border: 2px solid var(--color-border-control);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
}
input[aria-invalid="true"] { border-color: var(--color-danger); }
.custom-size { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.editor-card,
.stitch-preview-card,
.diagnostics-card { border: 1px solid var(--color-border-subtle); border-radius: var(--radius-lg); background: var(--color-surface); overflow: visible; }
.canvas-wrap { position: relative; display: grid; place-items: center; overflow: hidden; border-radius: var(--radius-lg) var(--radius-lg) 0 0; background: var(--color-ink); }
#editorCanvas { max-width: 100%; max-height: min(72svh, 900px); display: block; touch-action: none; cursor: grab; }
#editorCanvas.dragging { cursor: grabbing; }
.gesture-hint { position: absolute; left: 50%; bottom: var(--space-3); max-width: calc(100% - var(--space-5)); padding: var(--space-2) var(--space-3); transform: translateX(-50%); border-radius: var(--radius-pill); background: var(--color-overlay); color: var(--color-on-brand); font-size: var(--font-size-meta); text-align: center; pointer-events: none; transition: opacity var(--motion-normal); }
.editor-actions { padding: var(--space-3); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2); }
.editor-actions button { padding-inline: var(--space-2); }
.guide-settings summary { padding: var(--space-3) var(--space-4); }
.guide-settings summary span { margin-left: var(--space-2); color: var(--color-success); font-size: var(--font-size-meta); }
.toggle-grid { padding: 0 var(--space-4) var(--space-4); display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); }
.toggle-grid label, .inline-toggle { min-height: var(--control-target-min); display: flex; align-items: center; gap: var(--space-2); }
.toggle-grid input, .inline-toggle input { width: 22px; height: 22px; accent-color: var(--color-brand); }
.toggle-grid .subject-guide { grid-column: 1 / -1; display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; }
.toggle-grid .subject-guide > span { margin: 0; }
.crop-info { margin: 0; }
.crop-info > div { padding-block: var(--space-2); display: grid; grid-template-columns: minmax(112px, .7fr) minmax(0, 1.3fr); gap: var(--space-3); }
.crop-info > div + div { border-top: 1px solid var(--color-border-subtle); }
.crop-info dt { color: var(--color-ink-muted); font-weight: 600; }
.crop-info dd { margin: 0; overflow-wrap: anywhere; }

.four-tools { margin-bottom: var(--space-4); display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); color: var(--color-ink-muted); }
.order-list { margin: 0; padding: 0; display: grid; gap: var(--space-3); list-style: none; }
.order-card { min-width: 0; padding: var(--space-2); display: grid; grid-template-columns: 48px 72px minmax(0, 1fr) auto; align-items: center; gap: var(--space-2); border: 2px solid var(--color-border-control); border-radius: var(--radius-md); background: var(--color-surface); }
.order-card.drag-over { border-color: var(--color-accent-blue); }
.order-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-sm); background: var(--color-surface-muted); font-weight: 800; }
.order-thumb { width: 72px; height: 88px; object-fit: cover; border-radius: var(--radius-sm); background: var(--color-ink); }
.order-meta { min-width: 0; }
.order-meta strong { display: block; overflow-wrap: anywhere; }
.order-meta small { color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.order-buttons { display: grid; grid-template-columns: 44px 44px; gap: var(--space-1); }
.order-buttons button { width: 44px; min-height: 44px; padding: 0; }
.stitch-preview-card { margin-top: var(--space-4); padding: var(--space-4); }
.stitch-preview-card h3 { margin: 0 0 var(--space-3); }
.wide-scroll { max-width: 100%; overflow-x: auto; overflow-y: hidden; border-radius: var(--radius-sm); background: var(--color-ink); overscroll-behavior-x: contain; }
#stitchCanvas, #fullPreviewCanvas { max-height: 60svh; width: auto; display: block; }

.tab-row { margin-bottom: var(--space-4); display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2); border-bottom: 2px solid var(--color-border-subtle); }
.tab { border: 0; border-bottom: 4px solid transparent; border-radius: 0; background: transparent; }
.tab.active { border-bottom-color: var(--color-brand); color: var(--color-brand-active); }
.preview-pane { display: none; }
.preview-pane.active { display: block; }
.phone-frame { padding: var(--space-3) 0 var(--space-4); overflow: hidden; border: 1px solid var(--color-border-subtle); border-radius: var(--radius-lg); background: var(--color-surface); }
.mock-post-head { padding: 0 var(--space-4) var(--space-3); display: flex; align-items: center; gap: var(--space-3); }
.mock-post-head span:last-child { display: grid; }
.mock-post-head small { color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.mock-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--color-surface-muted); }
.x-carousel { --panel-aspect: .375; padding: 0 var(--space-3) var(--space-2); display: flex; gap: var(--space-2); overflow-x: auto; scroll-snap-type: x mandatory; touch-action: pan-x; overscroll-behavior-x: contain; }
.x-panel { flex: 0 0 auto; height: min(62svh, 650px); aspect-ratio: var(--panel-aspect); overflow: hidden; border-radius: var(--radius-md); background: var(--color-surface-muted); scroll-snap-align: start; }
.x-panel canvas { width: 100%; height: 100%; display: block; }
.carousel-controls { padding: var(--space-3) var(--space-4) 0; display: grid; grid-template-columns: minmax(88px, 1fr) auto minmax(88px, 1fr); align-items: center; gap: var(--space-3); }
.carousel-controls span { min-width: 56px; text-align: center; font-weight: 700; }
.helper-text { color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.full-preview-scroll { border: 1px solid var(--color-border-subtle); }
.inline-toggle { margin: var(--space-1) 0 var(--space-3); }
.boundary-list { display: grid; gap: var(--space-4); }
.boundary-card { overflow: hidden; border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface); }
.boundary-card h4 { margin: 0; padding: var(--space-3); color: var(--color-ink-muted); font-size: var(--font-size-body); }
.boundary-pair { padding: var(--space-3); display: flex; justify-content: center; overflow-x: auto; background: var(--color-surface-muted); }
.boundary-pair.no-gap { gap: 0; }
.boundary-pair.with-gap { gap: var(--space-2); }
.boundary-panel { height: min(54svh, 560px); aspect-ratio: var(--panel-aspect); flex: 0 0 auto; overflow: hidden; border-radius: var(--radius-sm); }
.boundary-pair.no-gap .boundary-panel { border-radius: 0; }
.boundary-panel canvas { width: 100%; height: 100%; display: block; }
.diagnostics-card { margin-top: var(--space-5); padding: var(--space-4); }
.diagnostics-title-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.diagnostics-title-row h3 { margin: 0; }
.diagnostics-list { margin-top: var(--space-3); display: grid; gap: var(--space-2); }
.diagnostic { padding: var(--space-3); display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: var(--space-2); border-radius: var(--radius-sm); background: var(--color-success-bg); }
.diagnostic.ok { color: var(--color-success); }
.diagnostic.warn { color: var(--color-warning); background: var(--color-warning-bg); }
.diagnostic.error { color: var(--color-danger); background: var(--color-danger-bg); }
.diagnostic .mark { font-weight: 800; text-align: center; }

.export-settings { padding: var(--space-4); display: grid; gap: var(--space-4); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface); }
input[type="range"] { width: 100%; min-height: var(--control-target-min); accent-color: var(--color-brand); }
.export-summary { margin: var(--space-4) 0; display: grid; }
.summary-row { padding: var(--space-3); display: flex; justify-content: space-between; gap: var(--space-4); border-bottom: 1px solid var(--color-border-subtle); }
.summary-row span { color: var(--color-ink-muted); }
.summary-row strong { text-align: right; overflow-wrap: anywhere; }
.primary-actions, .result-actions { display: grid; gap: var(--space-2); }
.progress-area { margin-top: var(--space-4); padding: var(--space-4); border-radius: var(--radius-md); background: var(--color-surface-muted); }
.progress-label { margin-bottom: var(--space-2); display: flex; justify-content: space-between; gap: var(--space-3); }
progress { width: 100%; height: 14px; accent-color: var(--color-brand); }
.export-results { margin-top: var(--space-5); padding-top: var(--space-5); border-top: 1px solid var(--color-border-subtle); }
.save-destination-card { padding: var(--space-4); border: 2px solid var(--color-brand); border-radius: var(--radius-lg); background: var(--color-surface); }
.photo-save-card { display: grid; gap: var(--space-3); }
.save-card-copy { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: var(--space-3); }
.save-card-copy h3 { margin: 0 0 var(--space-1); font-size: var(--font-size-subheading); }
.save-card-copy p { margin: 0; color: var(--color-ink-muted); }
.save-card-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: var(--radius-sm); background: var(--color-brand); color: var(--color-on-brand); font-size: var(--font-size-subheading); font-weight: 800; }
.file-save-details { overflow: visible; }
.file-save-details[open] > summary { border-bottom: 1px solid var(--color-border-subtle); }
.file-save-body { padding: var(--space-4); }
.file-save-body > p { margin: 0 0 var(--space-3); color: var(--color-ink-muted); }
.file-save-body h3 { margin: 0 0 var(--space-1); font-size: var(--font-size-subheading); }
.file-result-list { margin-top: var(--space-3); display: grid; gap: var(--space-2); }
.file-result { min-width: 0; padding: var(--space-2); display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: center; gap: var(--space-2); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-sm); background: var(--color-surface); }
.file-result .file-number { width: 44px; height: 44px; display: grid; place-items: center; border-radius: var(--radius-sm); background: var(--color-surface-muted); font-weight: 800; }
.file-result .file-meta { min-width: 0; }
.file-result .file-meta strong { display: block; overflow-wrap: anywhere; }
.file-result .file-meta small { color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.file-result a { min-height: var(--control-target-min); padding: var(--space-2); display: inline-flex; align-items: center; color: var(--color-accent-blue); font-weight: 600; }

.bottom-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; padding: var(--space-3) max(var(--space-4), calc((100vw - var(--layout-max)) / 2)) calc(var(--space-3) + var(--safe-bottom)); display: grid; grid-template-columns: minmax(96px, .7fr) minmax(144px, 1.3fr); gap: var(--space-2); border-top: 1px solid var(--color-border-subtle); background: var(--color-surface); }
.app-footer { padding: var(--space-5) 0 calc(var(--space-7) + var(--safe-bottom)); display: flex; justify-content: space-between; gap: var(--space-4); color: var(--color-ink-muted); font-size: var(--font-size-meta); }

.save-dialog { width: min(620px, calc(100% - var(--space-5))); max-height: min(88dvh, 820px); padding: 0; overflow: hidden; border: 2px solid var(--color-border-control); border-radius: var(--radius-lg); background: var(--color-surface); color: var(--color-ink); box-shadow: var(--shadow-card); }
.save-dialog::backdrop { background: var(--color-overlay); }
.dialog-shell { max-height: min(88dvh, 820px); padding: var(--space-5); overflow-y: auto; overscroll-behavior: contain; }
.dialog-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-3); }
.dialog-heading h2 { margin: 0; font-size: var(--font-size-heading); }
.dialog-heading p { margin: var(--space-1) 0 0; color: var(--color-ink-muted); }
.icon-button { width: 44px; height: 44px; min-height: 44px; flex: 0 0 auto; padding: 0; border: 2px solid var(--color-border-control); border-radius: 50%; background: var(--color-surface); font-size: var(--font-size-subheading); }
.save-instructions { margin: var(--space-5) 0 var(--space-3); padding-left: 1.5rem; }
.save-instructions li + li { margin-top: var(--space-2); }
.dialog-note { margin: var(--space-3) 0 0; padding: var(--space-3); border-left: 6px solid var(--color-warning); border-radius: var(--radius-sm); background: var(--color-warning-bg); color: var(--color-warning); }
.dialog-actions { margin-top: var(--space-4); display: grid; gap: var(--space-2); }
.fallback-heading { margin-top: var(--space-4); display: grid; gap: var(--space-3); }
.fallback-heading h3 { margin: 0; }
.fallback-heading p { margin: var(--space-1) 0 0; color: var(--color-ink-muted); }
.fallback-heading > button { justify-self: start; }
.fallback-image-list { margin-top: var(--space-4); display: grid; gap: var(--space-4); }
.fallback-image-card { padding: var(--space-3); display: grid; gap: var(--space-3); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface-muted); }
.fallback-image-wrap { min-height: 230px; max-height: 58dvh; display: grid; place-items: center; overflow: hidden; border-radius: var(--radius-sm); background: var(--color-ink); }
.fallback-image-wrap img { max-width: 100%; max-height: 58dvh; width: auto; height: auto; display: block; object-fit: contain; -webkit-touch-callout: default; user-select: none; }
.fallback-image-meta { min-width: 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-2); }
.fallback-image-meta strong { min-width: 0; overflow-wrap: anywhere; }
.fallback-image-meta small, .fallback-tip { color: var(--color-ink-muted); font-size: var(--font-size-meta); }
.fallback-image-actions { display: grid; gap: var(--space-2); }
.fallback-tip { margin: 0; }

.optional-share-details { margin-top: var(--space-4); border: 1px solid var(--color-border-subtle); border-radius: var(--radius-md); background: var(--color-surface); }
.optional-share-body { padding: 0 var(--space-4) var(--space-4); }
.optional-share-body p { margin: 0 0 var(--space-3); color: var(--color-ink-muted); }
.export-results[data-save-mode="android"] .file-save-details,
.export-results[data-save-mode="desktop"] .file-save-details { border: 2px solid var(--color-brand); }
.export-results[data-save-mode="android"] .file-save-details > summary,
.export-results[data-save-mode="desktop"] .file-save-details > summary { display: none; }

@media (min-width: 560px) {
  .dialog-actions { grid-template-columns: 1.3fr 1fr; }
  .fallback-image-actions { grid-template-columns: 1fr 1fr; }
  .fallback-heading { display: flex; align-items: flex-start; justify-content: space-between; }
}

@media (min-width: 720px) {
  .compact-grid { grid-template-columns: minmax(260px, .7fr) minmax(0, 1fr); align-items: end; }
  .export-settings { grid-template-columns: 1fr 1fr; align-items: end; }
  .primary-actions { grid-template-columns: 1fr auto; }
  .result-actions { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .order-list { grid-template-columns: 1fr 1fr; }
  .selection-preview-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
  html { scroll-padding-bottom: var(--space-6); }
  :where(button, input, select, summary, a[href], [tabindex]):not([tabindex="-1"]) { scroll-margin-block-end: var(--space-6); }
  .mobile-step-progress { display: none; }
  .stepper { margin: var(--space-3) 0 var(--space-7); padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); list-style: none; }
  .stepper li { position: relative; min-width: 0; }
  .stepper li:not(:last-child)::after { content: ""; position: absolute; top: 23px; left: calc(50% + 24px); right: calc(-50% + 24px); height: 2px; background: var(--color-border-subtle); }
  .stepper li.reached:not(:last-child)::after,
  .stepper li.done:not(:last-child)::after { background: var(--color-success); }
  .stepper button { width: 100%; padding: 0 var(--space-2); display: grid; justify-items: center; gap: var(--space-2); border: 0; background: transparent; color: var(--color-ink-muted); text-decoration: none; }
  .stepper button span { width: 46px; height: 46px; display: grid; place-items: center; border: 2px solid var(--color-border-control); border-radius: 50%; background: var(--color-surface); font-weight: 700; }
  .stepper button b { font-size: var(--font-size-body); }
  .stepper li.active button { color: var(--color-brand-active); }
  .stepper li.active button span { border-color: var(--color-brand); background: var(--color-brand); color: var(--color-on-brand); }
  .stepper li.done button span { border-color: var(--color-success); background: var(--color-success-bg); color: var(--color-success); }
  .stepper button:disabled { color: var(--color-disabled-text); }
  .bottom-nav { position: static; margin-top: var(--space-7); padding: var(--space-4) 0; border-top: 1px solid var(--color-border-subtle); background: transparent; }
  .app-shell { padding-bottom: var(--space-5); }
  .app-footer { padding-bottom: var(--space-6); }
}

@media (min-width: 1200px) {
  .selection-hero { min-height: 480px; }
  .single-editor-layout { grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr); align-items: start; }
  .editor-stage-column { position: sticky; top: var(--space-4); }
  .x-panel { height: min(68svh, 720px); }
}

@media (max-width: 520px) {
  .app-header, .app-footer, .app-shell, .update-notice { width: min(calc(100% - var(--space-5)), var(--layout-max)); }
  .selection-hero { min-height: 0; padding-block: var(--space-3) var(--space-5); grid-template-columns: minmax(0, 1fr) 84px; }
  .brand-mark-hero { width: 84px; height: 84px; gap: var(--space-2); }
  .drop-zone { padding: var(--space-4); border-radius: var(--radius-lg); }
  .selection-state-header { grid-template-columns: 52px minmax(0, 1fr); }
  .drop-icon { width: 52px; height: 52px; }
  .inline-heading { display: grid; }
  .inline-heading > button { justify-self: start; }
  .editor-actions { grid-template-columns: 1fr; }
  .toggle-grid { grid-template-columns: 1fr; }
  .order-card { grid-template-columns: 44px minmax(0, 1fr) auto; }
  .order-thumb { display: none; }
  .file-result { grid-template-columns: 44px minmax(0, 1fr); }
  .file-result a { grid-column: 1 / -1; justify-self: stretch; justify-content: center; }
  .summary-row { display: grid; gap: var(--space-1); }
  .summary-row strong { text-align: left; }
}

@media (max-width: 360px) {
  .app-header, .app-footer, .app-shell, .update-notice { width: min(calc(100% - var(--space-5)), var(--layout-max)); }
  .brand-lockup small { display: none; }
  .brand-mark-hero { display: none; }
  .selection-hero { grid-template-columns: 1fr; }
  .custom-size { grid-template-columns: 1fr; }
  .crop-info > div { grid-template-columns: 1fr; gap: var(--space-1); }
  .bottom-nav { grid-template-columns: minmax(88px, .65fr) minmax(132px, 1.35fr); }
}

@media (orientation: landscape) and (max-height: 620px) {
  .bottom-nav { position: static; margin-top: var(--space-5); }
  .app-shell { padding-bottom: var(--space-4); }
  .x-panel { height: 76svh; }
  .boundary-panel { height: 72svh; }
  .gesture-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}