:root {
  color-scheme: light;
  --app-bg: #f7f7f5;
  --app-surface: #ffffff;
  --app-surface-soft: #f1f1ee;
  --app-text: #181816;
  --app-muted: #74746e;
  --app-border: #deded8;
  --app-accent: #5146e5;
  --app-accent-soft: #efefff;
  --shell: 1440px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 0;
  background: var(--app-bg);
  color: var(--app-text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input, select { font: inherit; }
button, a, label, summary { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; }
h1, h2, h3, h4, p, strong, span, label, button, summary, code { text-wrap: wrap; overflow-wrap: anywhere; }

.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - var(--shell)) / 2));
  background: rgba(247, 247, 245, 0.92);
  border-bottom: 1px solid var(--app-border);
  backdrop-filter: blur(16px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-size: 22px;
  font-weight: 750;
  letter-spacing: -0.03em;
}
.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 8px;
  border: 1px solid #d2d2cc;
  border-radius: 10px;
  background: #fff;
}
.brand-mark span { display: block; height: 4px; border-radius: 999px; background: #242421; }
.brand-mark span:nth-child(1) { width: 20px; }
.brand-mark span:nth-child(2) { width: 14px; background: var(--app-accent); }
.brand-mark span:nth-child(3) { width: 9px; }
.header-note { font-size: 13px; color: var(--app-muted); }

.workspace-shell {
  width: min(var(--shell), 100%);
  margin: 0 auto;
  padding: 46px 24px 90px;
}
.builder-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  gap: 34px;
  align-items: start;
}
.control-column { min-width: 0; }
.tool-intro {
  max-width: 640px;
  padding: 8px 4px 38px;
}
.tool-intro h1 {
  margin: 0;
  max-width: 590px;
  font-size: clamp(36px, 4vw, 58px);
  line-height: 1.02;
  letter-spacing: -0.055em;
  font-weight: 760;
}
.tool-intro p {
  margin: 18px 0 0;
  max-width: 560px;
  color: #5f5f59;
  font-size: 18px;
  line-height: 1.55;
}
.tool-intro code {
  padding: 2px 6px;
  border-radius: 6px;
  background: #ededeb;
  color: #343430;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
}

.decision-group,
.optional-group,
.export-panel {
  border-top: 1px solid var(--app-border);
}
.group-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 25px 4px 17px;
}
.group-heading h2 { margin: 0; font-size: 21px; letter-spacing: -0.025em; }
.group-heading p { margin: 6px 0 0; color: var(--app-muted); font-size: 14px; line-height: 1.5; }
.group-count {
  flex: 0 0 auto;
  align-self: flex-start;
  color: var(--app-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.decision-list { min-width: 0; }
.decision-card {
  margin: 0;
  padding: 24px 4px 27px;
  border: 0;
  border-top: 1px solid #e8e8e4;
  min-width: 0;
}
.decision-card:first-child { border-top: 0; }
.decision-card legend {
  width: 100%;
  padding: 0 0 15px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
}
.decision-number {
  padding-top: 2px;
  color: #a0a09a;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.decision-heading { min-width: 0; }
.decision-heading strong {
  display: block;
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: -0.022em;
}
.decision-heading > span {
  display: block;
  margin-top: 5px;
  color: var(--app-muted);
  font-size: 13px;
  line-height: 1.45;
}
.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-left: 46px;
}
.choice-grid.choice-count-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.choice-grid.choice-count-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.choice-grid.choice-count-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.choice-card {
  position: relative;
  min-width: 0;
  min-height: 92px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 13px;
  border: 1px solid var(--app-border);
  border-radius: 14px;
  background: rgba(255,255,255,0.78);
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, box-shadow 120ms ease;
}
.choice-card:hover { border-color: #c5c5be; background: #fff; }
.choice-card:has(input:focus-visible) { outline: 3px solid rgba(81, 70, 229, 0.16); outline-offset: 2px; }
.choice-card.is-selected {
  border-color: #8b84ee;
  background: #f8f7ff;
  box-shadow: inset 0 0 0 1px rgba(81,70,229,0.12);
}
.choice-card input { position: absolute; opacity: 0; pointer-events: none; }
.choice-copy { min-width: 0; }
.choice-copy strong { display: block; font-size: 14px; line-height: 1.25; }
.choice-copy > span { display: block; margin-top: 4px; color: var(--app-muted); font-size: 11px; line-height: 1.35; }
.choice-check {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 18px;
  height: 18px;
  display: none;
  place-items: center;
  border-radius: 50%;
  background: var(--app-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
}
.choice-card.is-selected .choice-check { display: grid; }
.choice-visual {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: #f0f0ed;
  overflow: hidden;
}

.mini-panel { width: 26px; height: 22px; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid #c9c9c3; border-radius: 5px; overflow: hidden; background: #fff; }
.mini-panel i, .mini-panel b { display: block; }
.mini-panel i { background: #fff; }
.mini-panel b { background: #20232a; }
.mini-panel.mini-light b { background: #eee; }
.mini-panel.mini-dark i { background: #20232a; }
.mini-panel.mini-dark b { background: #30343c; }
.mini-type { font-size: 15px; font-weight: 700; }
.mini-type.mini-serif { font-family: Georgia, serif; }
.mini-type.mini-mono { font-family: ui-monospace, monospace; font-size: 13px; }
.mini-type.mini-display { font-family: "Arial Rounded MT Bold", "Trebuchet MS", sans-serif; }
.mini-radius { width: 28px; height: 22px; border: 2px solid #77776f; }
.mini-radius.mini-square { border-radius: 0; }
.mini-radius.mini-slight { border-radius: 5px; }
.mini-radius.mini-rounded { border-radius: 10px; }
.mini-radius.mini-pill { border-radius: 999px; }
.mini-density { width: 26px; display: grid; gap: 3px; }
.mini-density i { height: 3px; background: #5b5b55; border-radius: 9px; }
.mini-density.mini-compact { gap: 2px; }
.mini-density.mini-spacious { gap: 6px; }
.mini-neutral { display: flex; gap: 3px; }
.mini-neutral i { width: 8px; height: 18px; border-radius: 3px; background: #d7d2c7; }
.mini-neutral.mini-cool i { background: #d3dae3; }
.mini-surface { width: 27px; height: 21px; background: #fff; border-radius: 6px; }
.mini-surface.mini-flat { border: 0; }
.mini-surface.mini-border { border: 1px solid #bfbfb8; }
.mini-surface.mini-shadow { box-shadow: 0 4px 9px rgba(0,0,0,.13); }
.mini-surface.mini-elevated { box-shadow: 0 7px 12px rgba(0,0,0,.23); }
.mini-hover { width: 28px; height: 22px; display: grid; place-items: center; border: 1px solid #c3c3bc; border-radius: 6px; font-size: 10px; background: #fff; }
.mini-hover.mini-tint { background: #efefff; }
.mini-hover.mini-darken { background: #555; color: #fff; }
.mini-hover.mini-border { border-color: var(--app-accent); }
.mini-hover.mini-lift { transform: translateY(-2px); box-shadow: 0 4px 7px rgba(0,0,0,.16); }
.mini-motion { position: relative; width: 26px; height: 22px; }
.mini-motion i { position: absolute; width: 13px; height: 13px; border: 2px solid var(--app-accent); border-radius: 50%; left: 2px; top: 5px; }
.mini-motion b { position: absolute; width: 8px; height: 2px; border-radius: 2px; background: #aaa; right: 1px; top: 10px; }
.mini-motion.mini-expressive b { width: 12px; background: var(--app-accent); }
.mini-text { width: 27px; display: grid; gap: 3px; }
.mini-text i { display: block; height: 3px; border-radius: 9px; background: #666; }
.mini-text i:nth-child(2) { width: 22px; }
.mini-text i:nth-child(3) { width: 14px; }
.mini-text.mini-balance i:nth-child(1), .mini-text.mini-balance i:nth-child(2) { width: 22px; margin-inline: auto; }
.mini-text.mini-pretty i:nth-child(3) { width: 19px; }
.mini-icon svg { width: 22px; height: 22px; fill: none; stroke: #4f4f49; stroke-width: 1.7; }
.mini-icon.mini-filled svg { fill: #4f4f49; stroke: none; }
.mini-icon.mini-duotone svg { fill: rgba(81,70,229,.22); stroke: var(--app-accent); }

.accent-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin-left: 46px;
}
.accent-choice {
  position: relative;
  min-width: 0;
  min-height: 66px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 4px;
  border: 1px solid var(--app-border);
  border-radius: 12px;
  background: rgba(255,255,255,.78);
  cursor: pointer;
}
.accent-choice input { position: absolute; opacity: 0; }
.accent-choice:has(input:focus-visible) { outline: 3px solid rgba(81,70,229,.16); outline-offset: 2px; }
.accent-choice.is-selected { border-color: #8881ed; background: #f8f7ff; }
.accent-dot { width: 23px; height: 23px; border-radius: 50%; background: var(--swatch); box-shadow: inset 0 0 0 1px rgba(0,0,0,.08); }
.accent-choice strong { max-width: 100%; font-size: 11px; font-weight: 650; line-height: 1.15; text-align: center; }
.accent-choice.is-selected::after { content: "✓"; position: absolute; top: 5px; right: 6px; color: var(--app-accent); font-size: 11px; font-weight: 800; }

.optional-group { margin-top: 14px; }
.optional-group > summary {
  list-style: none;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 4px;
  cursor: pointer;
}
.optional-group > summary::-webkit-details-marker { display: none; }
.optional-summary-copy strong { display: block; font-size: 18px; letter-spacing: -0.02em; }
.optional-summary-copy > span { display: block; margin-top: 5px; color: var(--app-muted); font-size: 13px; }
.optional-summary-meta { display: flex; align-items: center; gap: 10px; color: var(--app-muted); font-size: 12px; white-space: nowrap; }
.chevron { font-size: 18px; transition: transform 120ms ease; }
.optional-group[open] .chevron { transform: rotate(180deg); }
.optional-list { border-top: 1px solid #e8e8e4; }

.export-panel {
  margin-top: 18px;
  padding: 28px 4px 0;
}
.export-kicker { display: block; color: var(--app-accent); font-size: 13px; font-weight: 700; }
.export-panel h2 { margin: 7px 0 0; max-width: 570px; font-size: 24px; line-height: 1.2; letter-spacing: -0.035em; }
.export-panel p { margin: 9px 0 0; color: var(--app-muted); font-size: 14px; line-height: 1.5; }
.selection-summary { display: flex; flex-wrap: wrap; gap: 7px; margin: 20px 0; }
.summary-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 30px;
  padding: 5px 9px;
  border: 1px solid var(--app-border);
  border-radius: 999px;
  background: #fff;
  color: #55554f;
  font-size: 11px;
  cursor: pointer;
}
.summary-chip:hover { border-color: #bbb; }
.summary-chip strong { color: #22221f; font-size: 11px; }
.primary-action {
  min-height: 46px;
  padding: 0 18px;
  border: 0;
  border-radius: 12px;
  background: var(--app-accent);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
.primary-action:hover:not(:disabled) { background: #4338ca; }
.primary-action:focus-visible { outline: 3px solid rgba(81,70,229,.2); outline-offset: 2px; }
.primary-action:disabled { opacity: .35; cursor: not-allowed; }

.preview-panel {
  position: sticky;
  top: 92px;
  min-width: 0;
  max-height: calc(100vh - 116px);
  overflow: hidden;
  border: 1px solid #d8d8d2;
  border-radius: 18px;
  background: #ededeb;
  box-shadow: 0 16px 40px rgba(31,31,26,.08);
}
.preview-toolbar {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 1px solid #d8d8d2;
  background: rgba(255,255,255,.92);
}
.preview-tabs { display: flex; gap: 3px; }
.preview-tabs button,
.mode-switch button {
  min-height: 34px;
  padding: 0 10px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: #676761;
  font-size: 12px;
  cursor: pointer;
}
.preview-tabs button[aria-selected="true"] { background: #efefff; color: var(--app-accent); font-weight: 700; }
.preview-toolbar-actions { display: flex; align-items: center; gap: 8px; }
.mode-switch { display: inline-flex; padding: 2px; border: 1px solid #ddddda; border-radius: 10px; background: #f5f5f2; }
.mode-switch[hidden] { display: none; }
.mode-switch button[aria-pressed="true"] { background: #fff; color: #252522; box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.preview-close { display: none; width: 36px; height: 36px; border: 0; border-radius: 9px; background: #f2f2ef; font-size: 23px; line-height: 1; cursor: pointer; }
.preview-frame {
  --pv-bg: #f5f7fa;
  --pv-surface: #fff;
  --pv-surface-alt: #eef2f6;
  --pv-text: #17202a;
  --pv-muted: #667085;
  --pv-border: #d9e0e8;
  --pv-accent: #4338ca;
  --pv-accent-hover: #3730a3;
  --pv-accent-soft: #eef2ff;
  --pv-ring: rgba(67,56,202,.28);
  --pv-body-font: ui-sans-serif, sans-serif;
  --pv-heading-font: ui-sans-serif, sans-serif;
  --pv-body-weight: 400;
  --pv-heading-weight: 720;
  --pv-control-radius: 12px;
  --pv-card-radius: 16px;
  --pv-surface-border: var(--pv-border);
  --pv-shadow: none;
  --pv-space: 16px;
  --pv-card-pad: 22px;
  --pv-control-h: 42px;
  --pv-duration: 140ms;
  --pv-motion-distance: 1px;
  --pv-focus-shadow: 0 0 0 3px;
  --pv-body-wrap: wrap;
  --pv-heading-wrap: wrap;
  --pv-icon-size: 20px;
  --pv-icon-stroke: 1.75;
  height: calc(100vh - 175px);
  min-height: 610px;
  overflow: auto;
  background: var(--pv-bg);
  color: var(--pv-text);
  font-family: var(--pv-body-font);
  font-weight: var(--pv-body-weight);
  transition: background var(--pv-duration) ease, color var(--pv-duration) ease;
}
.preview-frame *, .preview-frame *::before, .preview-frame *::after { box-sizing: border-box; }
.preview-frame h3, .preview-frame h4 { font-family: var(--pv-heading-font); font-weight: var(--pv-heading-weight); text-wrap: var(--pv-heading-wrap); }
.preview-frame p, .preview-frame label, .preview-frame button, .preview-frame input, .preview-frame select, .preview-frame span { text-wrap: var(--pv-body-wrap); }
.preview-view[hidden] { display: none; }
.demo-nav {
  position: sticky;
  top: 0;
  z-index: 3;
  min-height: 62px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--pv-border);
  background: color-mix(in srgb, var(--pv-surface) 94%, transparent);
  backdrop-filter: blur(12px);
}
.demo-brand { display: inline-flex; align-items: center; gap: 9px; font-size: 14px; }
.demo-logo { width: 25px; height: 25px; display: grid; place-items: center; border-radius: max(7px, var(--pv-control-radius)); background: var(--pv-accent); color: #fff; font-size: 11px; font-weight: 800; }
.demo-links { display: flex; justify-content: center; gap: 18px; }
.demo-links a { color: var(--pv-muted); text-decoration: none; font-size: 11px; }
.demo-nav .demo-icon-button { justify-self: end; }
.demo-page { padding: clamp(20px, 4vw, 42px); }
.demo-hero { max-width: 590px; }
.demo-eyebrow { display: inline-flex; padding: 7px 11px; border-radius: 999px; background: var(--pv-accent-soft); color: var(--pv-accent); font-size: 11px; font-weight: 700; }
.demo-hero h3 { margin: 16px 0 0; font-size: clamp(31px, 4vw, 48px); line-height: 1.02; letter-spacing: -0.045em; }
.demo-hero p { max-width: 540px; margin: 14px 0 0; color: var(--pv-muted); font-size: 14px; line-height: 1.55; }
.demo-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.demo-button {
  min-height: var(--pv-control-h);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--pv-control-radius);
  font-weight: 650;
  font-size: 12px;
  cursor: pointer;
  transition: transform var(--pv-duration) ease, background var(--pv-duration) ease, border-color var(--pv-duration) ease, box-shadow var(--pv-duration) ease;
}
.demo-button-primary { background: var(--pv-accent); color: #fff; }
.demo-button-secondary { border-color: var(--pv-border); background: var(--pv-surface); color: var(--pv-text); }
.demo-button-quiet { background: transparent; color: var(--pv-text); }
.demo-button:disabled { opacity: .48; cursor: not-allowed; }
.preview-frame :is(button, input, select):focus-visible { outline: none; box-shadow: var(--pv-focus-shadow) var(--pv-ring); }
.preview-frame[data-hover="tint"] .demo-button-secondary:hover:not(:disabled),
.preview-frame[data-hover="tint"] .demo-icon-button:hover { background: var(--pv-accent-soft); }
.preview-frame[data-hover="darken"] .demo-button-primary:hover:not(:disabled) { background: var(--pv-accent-hover); }
.preview-frame[data-hover="border"] .demo-button:hover:not(:disabled),
.preview-frame[data-hover="border"] .demo-icon-button:hover { border-color: var(--pv-accent); }
.preview-frame[data-hover="lift"] .demo-button:hover:not(:disabled),
.preview-frame[data-hover="lift"] .demo-card:hover { transform: translateY(calc(var(--pv-motion-distance) * -1)); box-shadow: 0 8px 20px rgba(15,23,42,.13); }
.demo-dashboard-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: var(--pv-space); margin-top: calc(var(--pv-space) * 2.1); }
.demo-card {
  min-width: 0;
  padding: var(--pv-card-pad);
  border: 1px solid var(--pv-surface-border);
  border-radius: var(--pv-card-radius);
  background: var(--pv-surface);
  box-shadow: var(--pv-shadow);
  transition: transform var(--pv-duration) ease, box-shadow var(--pv-duration) ease;
}
.metric-card strong { display: block; margin-top: 8px; font-family: var(--pv-heading-font); font-size: 42px; line-height: 1; }
.metric-card > span, .metric-card p { color: var(--pv-muted); font-size: 12px; }
.metric-card p { margin: 10px 0 0; line-height: 1.45; }
.demo-card-icon { width: 40px; height: 40px; display: grid; place-items: center; margin-bottom: 15px; border-radius: var(--pv-control-radius); background: var(--pv-accent-soft); color: var(--pv-accent); }
.task-card { grid-column: 2; grid-row: span 2; }
.card-title-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.demo-badge { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 8px; border-radius: 999px; background: var(--pv-surface-alt); color: var(--pv-muted); font-size: 10px; }
.accent-badge { background: var(--pv-accent-soft); color: var(--pv-accent); }
.task-row { display: grid; grid-template-columns: auto 1fr auto; gap: 9px; align-items: center; padding: 10px 0; border-top: 1px solid var(--pv-border); font-size: 11px; }
.task-row small { color: var(--pv-muted); }
.task-row input, .demo-check input { accent-color: var(--pv-accent); }
.demo-form { display: grid; gap: 10px; }
.demo-form > label:not(.demo-check), .sampler-label { color: var(--pv-muted); font-size: 11px; font-weight: 650; }
.preview-frame input[type="text"], .preview-frame input[type="email"], .preview-frame select {
  width: 100%;
  min-width: 0;
  min-height: var(--pv-control-h);
  padding: 0 12px;
  border: 1px solid var(--pv-border);
  border-radius: var(--pv-control-radius);
  background: var(--pv-surface-alt);
  color: var(--pv-text);
}
.demo-check { display: flex; gap: 8px; align-items: center; font-size: 11px; }
.demo-icon-button {
  width: var(--pv-control-h);
  height: var(--pv-control-h);
  display: grid;
  place-items: center;
  border: 1px solid var(--pv-border);
  border-radius: var(--pv-control-radius);
  background: var(--pv-surface);
  color: var(--pv-text);
  cursor: pointer;
  transition: transform var(--pv-duration) ease, background var(--pv-duration) ease, border-color var(--pv-duration) ease;
}
.preview-icon { width: var(--pv-icon-size); height: var(--pv-icon-size); }
.preview-icon .icon-outline { fill: none; stroke: currentColor; stroke-width: var(--pv-icon-stroke); stroke-linecap: round; stroke-linejoin: round; }
.preview-icon .icon-filled, .preview-icon .icon-duo-primary, .preview-icon .icon-duo-secondary { display: none; }
.preview-frame[data-icon="filled"] .preview-icon .icon-outline { display: none; }
.preview-frame[data-icon="filled"] .preview-icon .icon-filled { display: block; fill: currentColor; }
.preview-frame[data-icon="duotone"] .preview-icon .icon-outline { display: none; }
.preview-frame[data-icon="duotone"] .preview-icon .icon-duo-primary { display: block; fill: currentColor; }
.preview-frame[data-icon="duotone"] .preview-icon .icon-duo-secondary { display: block; fill: currentColor; opacity: .25; }

.sampler-shell { padding: clamp(20px, 3.5vw, 34px); }
.sampler-heading { padding-bottom: 22px; }
.sampler-heading > span { color: var(--pv-accent); font-size: 11px; font-weight: 700; }
.sampler-heading h3 { max-width: 530px; margin: 8px 0 0; font-size: 30px; line-height: 1.08; letter-spacing: -0.035em; }
.sampler-section { padding: var(--pv-card-pad); border: 1px solid var(--pv-surface-border); border-radius: var(--pv-card-radius); background: var(--pv-surface); box-shadow: var(--pv-shadow); }
.sampler-section + .sampler-section { margin-top: var(--pv-space); }
.sampler-section h4 { margin: 0 0 13px; font-size: 13px; }
.sampler-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sampler-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.sampler-form-grid > div { min-width: 0; }
.sampler-label { display: grid; gap: 6px; margin-top: 10px; }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 13px; font-size: 11px; }
.switch-row input { position: absolute; opacity: 0; }
.switch-row i { position: relative; width: 38px; height: 22px; border-radius: 999px; background: var(--pv-border); }
.switch-row i::after { content: ""; position: absolute; width: 16px; height: 16px; left: 3px; top: 3px; border-radius: 50%; background: #fff; transition: transform var(--pv-duration) ease; }
.switch-row input:checked + i { background: var(--pv-accent); }
.switch-row input:checked + i::after { transform: translateX(16px); }
.demo-tabs { display: flex; gap: 3px; margin-top: 13px; padding: 3px; border-radius: var(--pv-control-radius); background: var(--pv-surface-alt); }
.demo-tabs button { flex: 1; min-height: 34px; border: 0; border-radius: max(4px, calc(var(--pv-control-radius) - 3px)); background: transparent; color: var(--pv-muted); font-size: 10px; }
.demo-tabs button.is-current { background: var(--pv-surface); color: var(--pv-text); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.demo-alert { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; }
.demo-alert .demo-card-icon { width: 34px; height: 34px; margin: 0; font-family: ui-serif, serif; font-weight: 700; }
.demo-alert strong { font-size: 12px; }
.demo-alert p { margin: 3px 0 0; color: var(--pv-muted); font-size: 11px; line-height: 1.45; }
.state-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--pv-space); }
.state-sample { min-width: 0; display: grid; gap: 9px; padding: 14px; border-radius: max(6px, calc(var(--pv-card-radius) - 5px)); background: var(--pv-surface-alt); }
.state-sample > span { color: var(--pv-muted); font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.state-sample small { color: var(--pv-muted); font-size: 10px; line-height: 1.4; }
.state-press-target:active { transform: translateY(1px) scale(.99); background: var(--pv-accent-hover); }
.text-stress h3 { max-width: 560px; margin: 0; font-size: 26px; line-height: 1.13; }
.text-stress p { max-width: 570px; color: var(--pv-muted); font-size: 13px; line-height: 1.55; }
.text-stress code { display: block; padding: 11px; border-radius: var(--pv-control-radius); background: var(--pv-surface-alt); color: var(--pv-text); font-family: ui-monospace, monospace; font-size: 10px; overflow-wrap: anywhere; white-space: normal; }
.icon-sampler { display: flex; gap: 10px; }
.icon-sampler .demo-card-icon { margin: 0; }

.mobile-preview-toggle { display: none; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 100;
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  padding: 10px 14px;
  border-radius: 10px;
  background: #1f1f1c;
  color: #fff;
  font-size: 12px;
  transition: opacity 150ms ease, transform 150ms ease;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1180px) {
  .builder-layout { grid-template-columns: minmax(0, .95fr) minmax(460px, 1.05fr); gap: 24px; }
  .choice-grid.choice-count-5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .demo-links { display: none; }
  .demo-nav { grid-template-columns: 1fr auto; }
}

@media (max-width: 900px) {
  .app-header { height: 62px; padding: 0 20px; }
  .brand { font-size: 20px; }
  .brand-mark { width: 34px; height: 34px; }
  .header-note { display: none; }
  .workspace-shell { padding: 28px 20px 100px; }
  .builder-layout { display: block; }
  .tool-intro { padding: 2px 0 28px; }
  .tool-intro h1 { font-size: clamp(34px, 9vw, 48px); }
  .tool-intro p { margin-top: 14px; font-size: 16px; }
  .preview-panel {
    position: fixed;
    inset: 0;
    z-index: 80;
    max-height: none;
    border: 0;
    border-radius: 0;
    transform: translateY(102%);
    transition: transform 180ms ease;
    background: #d7d7d3;
  }
  .preview-panel.mobile-open { transform: translateY(0); }
  .preview-toolbar { min-height: 58px; padding-top: max(9px, env(safe-area-inset-top)); }
  .preview-close { display: grid; place-items: center; }
  .preview-frame { height: calc(100dvh - 58px - env(safe-area-inset-top)); min-height: 0; }
  body.preview-open { overflow: hidden; }
  .mobile-preview-toggle {
    position: fixed;
    right: 18px;
    bottom: max(18px, env(safe-area-inset-bottom));
    z-index: 50;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    border: 0;
    border-radius: 999px;
    background: #1d1d1a;
    color: #fff;
    font-weight: 700;
    box-shadow: 0 10px 28px rgba(0,0,0,.2);
  }
}

@media (max-width: 620px) {
  .workspace-shell { padding-inline: 16px; }
  .tool-intro h1 { font-size: 36px; line-height: 1.04; letter-spacing: -0.05em; }
  .group-heading { padding-inline: 0; }
  .decision-card { padding-inline: 0; }
  .decision-card legend { grid-template-columns: 29px minmax(0, 1fr); gap: 8px; }
  .decision-heading strong { font-size: 17px; }
  .choice-grid, .accent-grid { margin-left: 37px; }
  .choice-grid { grid-template-columns: 1fr !important; }
  .choice-grid.choice-count-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .choice-grid.choice-count-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .choice-grid.choice-count-4 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .choice-grid.choice-count-5 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .choice-card { min-height: 84px; grid-template-columns: 34px minmax(0,1fr); padding: 11px; }
  .choice-visual { width: 34px; height: 34px; }
  .choice-copy strong { font-size: 13px; }
  .choice-copy > span { font-size: 10px; }
  .accent-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
  .accent-choice { min-height: 61px; padding-inline: 2px; }
  .accent-dot { width: 21px; height: 21px; }
  .accent-choice strong { font-size: 10px; letter-spacing: -0.02em; }
  .optional-group > summary { padding-inline: 0; }
  .optional-summary-copy > span { max-width: 220px; }
  .optional-summary-meta { font-size: 10px; }
  .export-panel { padding-inline: 0; }
  .export-panel h2 { font-size: 22px; }
  .primary-action { width: 100%; }
  .preview-tabs button { padding-inline: 8px; }
  .mode-switch button { padding-inline: 8px; }
  .demo-page, .sampler-shell { padding: 20px; }
  .demo-hero h3 { font-size: 34px; }
  .demo-dashboard-grid { grid-template-columns: 1fr; }
  .task-card { grid-column: auto; grid-row: auto; }
  .sampler-form-grid, .state-grid { grid-template-columns: 1fr; }
  .demo-nav { padding-inline: 14px; }
}

@media (max-width: 390px) {
  .choice-grid.choice-count-3 { grid-template-columns: 1fr !important; }
  .accent-grid { margin-left: 0; }
  .decision-card[data-decision="accent"] legend { margin-bottom: 3px; }
  .accent-choice strong { font-size: 9px; }
  .preview-tabs button { padding-inline: 6px; font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

.decision-card { position: relative; }
.decision-clear {
  position: absolute;
  top: 22px;
  right: 4px;
  min-height: 26px;
  padding: 0 8px;
  border: 0;
  border-radius: 7px;
  background: #eeeeeb;
  color: #6b6b65;
  font-size: 10px;
  cursor: pointer;
}
.decision-clear:hover { background: #e5e5e1; color: #33332f; }
.decision-clear[hidden] { display: none; }
@media (max-width: 620px) {
  .decision-clear { top: 22px; right: 0; }
  .decision-card:not([data-decision="accent"]) .decision-heading { padding-right: 38px; }
}

.tool-intro h1 { font-size: clamp(32px, 3.2vw, 46px); max-width: 560px; }
.optional-list .decision-heading { padding-right: 42px; }
.choice-grid.choice-count-5 .choice-card {
  grid-template-columns: 1fr;
  justify-items: center;
  text-align: center;
  min-height: 80px;
}
.choice-grid.choice-count-5 .choice-copy > span { display: none; }
@media (max-width: 620px) {
  .tool-intro h1 { font-size: 32px; }
  .optional-list .decision-heading { padding-right: 38px; }
  .decision-card:not([data-decision="accent"]) .decision-heading { padding-right: 0; }
  .optional-list .decision-card:not([data-decision="accent"]) .decision-heading { padding-right: 38px; }
}