:root {
  --bg: #fff;
  --bg-soft: #fff;
  --panel: rgba(255, 255, 255, 0.78);
  --panel-strong: rgba(255, 255, 255, 0.9);
  --surface: rgba(255, 255, 255, 0.48);
  --surface-strong: rgba(255, 255, 255, 0.82);
  --ink: #1d1814;
  --ink-inverted: #fffdf9;
  --muted: #746a60;
  --line: rgba(29, 24, 20, 0.08);
  --line-strong: rgba(29, 24, 20, 0.14);
  --accent: #8a5539;
  --accent-soft: rgba(138, 85, 57, 0.05);
  --selected-line: rgba(138, 85, 57, 0.24);
  --inline-note-bg: rgba(29, 24, 20, 0.045);
  --keyboard-special-bg: rgba(232, 232, 232, 0.95);
  --qr-frame-bg: transparent;
  --error: #a83f2f;
  --radius-lg: 1.1rem;
  --radius-md: 0.85rem;
  --shadow: none;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10100f;
    --bg-soft: #10100f;
    --panel: rgba(26, 25, 23, 0.78);
    --panel-strong: rgba(31, 30, 28, 0.92);
    --surface: rgba(255, 255, 255, 0.055);
    --surface-strong: rgba(255, 255, 255, 0.1);
    --ink: #f3eee7;
    --ink-inverted: #10100f;
    --muted: #b8ada1;
    --line: rgba(255, 255, 255, 0.13);
    --line-strong: rgba(255, 255, 255, 0.22);
    --accent: #d6a074;
    --accent-soft: rgba(214, 160, 116, 0.12);
    --selected-line: rgba(214, 160, 116, 0.38);
    --inline-note-bg: rgba(255, 255, 255, 0.085);
    --keyboard-special-bg: rgba(255, 255, 255, 0.16);
    --qr-frame-bg: #fff;
    --error: #ff9a88;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg-soft);
  color-scheme: light dark;
}

body {
  background: var(--bg-soft);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", "Noto Sans", "PingFang SC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: none;
}

button,
input {
  font: inherit;
}

#app {
  width: min(100%, 72rem);
  margin: 0 auto;
  padding: 1.8rem 1rem 3rem;
}

.page-title,
.rime-section-title {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.page-title {
  font-size: clamp(2.7rem, 6vw, 4.9rem);
  line-height: 0.96;
  white-space: nowrap;
}

.rime-section-title {
  font-size: 1.45rem;
  line-height: 1.05;
}

.rime-section-copy,
.rime-help-text,
.rime-empty-state,
.rime-option-id,
.rime-preview-hint {
  margin: 0;
  color: var(--muted);
}

.rime-config-shell,
.rime-primary-column,
.rime-summary-column,
.rime-section-header,
.rime-option-copy,
.rime-summary-card,
.rime-summary-block,
.rime-summary-intro,
.keyboard-preview,
.rime-support-block {
  display: flex;
  flex-direction: column;
}

.rime-config-shell {
  gap: 1rem;
}

.rime-hero-card,
.rime-section,
.rime-summary-card,
.rime-notes-card,
.rime-preview-panel {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.rime-hero-card {
  padding: 0 0 0.9rem;
  background: transparent;
}

.rime-section,
.rime-summary-card,
.rime-notes-card,
.rime-preview-panel {
  padding: 0.95rem 0 0;
}

.rime-hero-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.rime-landing-shell {
  min-height: calc(100vh - 4.8rem);
  justify-content: center;
}

.rime-landing-hero {
  padding-bottom: 0;
}

.rime-landing-intro {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  max-width: 42rem;
}

.rime-tool-head {
  display: flex;
  width: 100%;
  flex-direction: column;
  gap: 0.75rem;
}

.rime-landing-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.rime-landing-choice {
  display: flex;
  min-height: 9rem;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
  text-decoration: none;
  background: transparent;
}

.rime-landing-choice:hover {
  border-color: var(--selected-line);
  background: var(--accent-soft);
}

.rime-landing-choice-title {
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  font-size: 1.55rem;
  font-weight: 600;
  line-height: 1;
}

.rime-landing-choice-copy {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.rime-landing-notes {
  display: flex;
  max-width: 44rem;
  flex-direction: column;
  gap: 0.45rem;
}

.rime-mode-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.rime-nav-link {
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.rime-summary-kicker,
.rime-summary-label,
.keyboard-preview-label {
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.rime-language-toggle {
  appearance: none;
  display: inline-flex;
  min-width: 2.7rem;
  align-items: center;
  justify-content: center;
  padding: 0.38rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 700;
}

.rime-language-toggle:hover {
  border-color: var(--selected-line);
  color: var(--ink);
}

.rime-config-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(18rem, 0.95fr);
  gap: 1rem;
  align-items: start;
}

.rime-primary-column,
.rime-summary-column {
  gap: 1.1rem;
}

.rime-summary-column {
  position: sticky;
  top: 0.75rem;
  align-self: start;
}

.rime-section-header,
.rime-summary-block,
.rime-summary-intro,
.keyboard-preview,
.rime-support-block {
  gap: 0.5rem;
}

.rime-platform-grid,
.rime-option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.rime-platform-button,
.rime-option-card,
.rime-build-button,
.rime-option-preview {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
}

.rime-platform-button,
.rime-build-button,
.rime-option-preview {
  appearance: none;
  background: transparent;
}

.rime-platform-button {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  background: transparent;
}

.rime-platform-button.is-active,
.rime-option-card.is-selected,
.rime-option-card.is-previewing {
  border-color: var(--selected-line);
  background: var(--accent-soft);
}

.rime-option-card {
  gap: 0.7rem;
  padding: 0.8rem;
  background: transparent;
}

.rime-skin-card {
  padding: 0.9rem 1rem;
}

.rime-option-card.is-auto {
  border-style: dashed;
}

.rime-option-card .rime-option-copy {
  gap: 0.3rem;
}

.rime-option-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  width: 100%;
  padding: 0.8rem 0.9rem;
  text-align: left;
  cursor: pointer;
  background: var(--surface);
}

.rime-skin-row,
.rime-skin-actions,
.rime-preview-head {
  display: flex;
  align-items: center;
}

.rime-skin-row,
.rime-preview-head {
  justify-content: space-between;
  gap: 1rem;
}

.rime-skin-actions {
  gap: 0.65rem;
  flex-shrink: 0;
}

.rime-skin-preview-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.2rem;
  padding: 0.45rem 0.78rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
}

.rime-skin-toggle {
  min-height: 2.2rem;
  padding: 0 0.1rem;
}

.rime-option-action {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}

.rime-option-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0.1rem;
  color: var(--muted);
}

.rime-option-toggle input {
  margin: 0;
}

.rime-option-toggle-label,
.rime-platform-hint,
.rime-option-id,
.rime-inline-note,
.rime-preview-hint {
  font-size: 0.82rem;
}

.rime-option-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.rime-platform-label,
.rime-option-title {
  font-size: 1rem;
  font-weight: 700;
}

.rime-inline-note {
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: var(--inline-note-bg);
}

.rime-summary-card {
  gap: 0.9rem;
  background: transparent;
}

.rime-summary-kicker {
  color: var(--accent);
}

.rime-summary-label,
.keyboard-preview-label {
  color: var(--muted);
}

.rime-summary-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.rime-summary-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-size: 0.78rem;
  line-height: 1.2;
}

.rime-build-button {
  width: 100%;
  padding: 0.92rem 1rem;
  cursor: pointer;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
}

.rime-build-button.is-disabled,
.rime-build-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.rime-build-note {
  margin: -0.1rem 0 0;
  color: var(--accent);
  font-size: 0.82rem;
  line-height: 1.45;
}

.rime-help-block {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.rime-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.rime-help-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 700;
}

.rime-support-block {
  padding-top: 0.4rem;
}

.rime-support-image-frame {
  overflow: hidden;
  width: min(100%, 11.5rem);
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: var(--qr-frame-bg);
  align-self: flex-start;
}

.rime-support-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
  display: block;
}

.rime-skin-layout {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 0.85rem;
}

.rime-skin-picker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.75rem;
}

.rime-preview-panel {
  gap: 0.9rem;
  justify-content: flex-start;
  min-height: 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.keyboard-preview-grid {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.keyboard-preview,
.keyboard-preview-shell {
  width: 100%;
}

.keyboard-preview-themes,
.keyboard-preview-theme {
  width: 100%;
}

.keyboard-preview-theme.is-dark {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .keyboard-preview-theme.is-light {
    display: none;
  }

  .keyboard-preview-theme.is-dark {
    display: block;
  }
}

.keyboard-preview {
  width: min(100%, 32rem);
  margin: 0;
}

.keyboard-preview-svg {
  display: block;
  width: 100%;
  height: auto;
}

.keyboard-preview-grid.is-rich {
  height: 100%;
  width: 100%;
  gap: clamp(0.32rem, 1.3vw, 0.55rem);
}

.keyboard-preview-row,
.keyboard-preview-space-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.35rem;
}

.keyboard-preview-row.is-rich {
  flex: 1 1 0;
  width: 100%;
  gap: clamp(0.28rem, 1.1vw, 0.48rem);
}

.keyboard-preview-key,
.keyboard-preview-space {
  display: grid;
  place-items: center;
  min-width: 2.1rem;
  height: 2.3rem;
  padding: 0 0.45rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: var(--surface-strong);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
}

.keyboard-preview-shell {
  display: block;
  padding: clamp(0.55rem, 1.6vw, 0.8rem);
  border: 0;
  border-radius: clamp(1.1rem, 4vw, 1.65rem);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.keyboard-preview-key.is-rich {
  position: relative;
  min-width: 0;
  height: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: clamp(0.55rem, 2.2vw, 0.95rem);
  box-shadow:
    inset 0 0 0 1px rgba(0, 0, 0, 0.06),
    0 0.04rem 0.12rem rgba(0, 0, 0, 0.1);
}

.keyboard-preview-key.is-rich.is-special {
  background: var(--keyboard-special-bg);
}

.keyboard-preview-key.is-rich.is-space {
  min-width: 7rem;
}

.keyboard-preview-layer,
.keyboard-preview-fallback-label {
  position: absolute;
  font-family: "Avenir Next", "SF Pro Display", "Segoe UI", "Noto Sans", "PingFang TC", sans-serif;
  line-height: 1;
  white-space: nowrap;
}

.keyboard-preview-fallback-label {
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(0.98rem, 4.1vw, 1.32rem);
  font-weight: 500;
  color: var(--preview-fallback-color, var(--ink));
  text-transform: lowercase;
}

.keyboard-preview-key.is-space .keyboard-preview-fallback-label {
  width: 1.8rem;
  height: 0.72rem;
  border-right: 0.14rem solid currentColor;
  border-bottom: 0.14rem solid currentColor;
  border-left: 0.14rem solid currentColor;
  font-size: 0;
}

.keyboard-preview-key.is-wide {
  min-width: 3.2rem;
}

.keyboard-preview-key.is-blank {
  background: transparent;
  border-color: transparent;
}

.keyboard-preview-space {
  width: 8.4rem;
}

.rime-error-text {
  margin: 0;
  color: var(--error);
}

.rime-empty-state {
  font-size: 0.92rem;
}

@media (max-width: 1120px) {
  .rime-config-grid {
    grid-template-columns: 1fr;
  }

  .rime-summary-column {
    position: static;
  }
}

@media (max-width: 860px) {
  #app {
    padding: 1.25rem 0.9rem 2.6rem;
  }

  .rime-landing-shell {
    min-height: calc(100vh - 3.85rem);
  }

  .rime-landing-choices,
  .rime-platform-grid,
  .rime-option-grid,
  .rime-skin-picker {
    grid-template-columns: 1fr;
  }

  .rime-preview-panel {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  .rime-hero-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .rime-language-toggle {
    align-self: flex-start;
  }
}

@media (max-width: 640px) {
  .rime-hero-card,
  .rime-section,
  .rime-summary-card,
  .rime-notes-card,
  .rime-preview-panel {
    padding-left: 0;
    padding-right: 0;
  }

  .page-title {
    font-size: clamp(2.1rem, 10vw, 3rem);
    white-space: normal;
    line-height: 1;
  }

  .keyboard-preview {
    max-width: none;
  }

  .keyboard-preview-shell {
    padding: 0.5rem;
  }

  .keyboard-preview-grid,
  .keyboard-preview-grid.is-rich {
    gap: 0.34rem;
  }

  .keyboard-preview-row,
  .keyboard-preview-space-row,
  .keyboard-preview-row.is-rich {
    gap: 0.28rem;
  }

  .keyboard-preview-key,
  .keyboard-preview-space {
    min-width: 1.7rem;
    height: 1.95rem;
    padding: 0 0.25rem;
    border-radius: 0.58rem;
    font-size: 0.74rem;
  }

  .keyboard-preview-key.is-rich {
    height: 100%;
  }

  .keyboard-preview-key.is-rich.is-space {
    min-width: 5.4rem;
  }

  .keyboard-preview-space {
    width: 6.4rem;
  }

  .keyboard-preview-fallback-label {
    font-size: 1.02rem;
  }

  .rime-skin-row,
  .rime-skin-actions,
  .rime-preview-head {
    align-items: flex-start;
  }

  .rime-skin-row,
  .rime-preview-head {
    flex-direction: column;
  }

  .rime-skin-actions {
    width: 100%;
    justify-content: space-between;
  }
}