@font-face {
  font-family: Inter;
  src: url("/vendor/inter.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  color-scheme: light;
  --bg: #f6f4ee;
  --panel: #fdfdfb;
  --raised: #eeece4;
  --ink: #1c221f;
  --muted: #46544c;
  --dim: #59665d;
  --line: #d5d7ce;
  --accent: #496e55;
  --on-accent: #fdfdfb;
  --sheet: #f2c87d;
  --sheet-line: #9c7342;
  --gold: #805629;
  --rose: #a33e45;
  --body: Inter, system-ui, sans-serif;
  --display: Georgia, "Times New Roman", serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  --shell: min(100% - clamp(32px, 5.8vw, 110px), 1540px);
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; overscroll-behavior: none; }
body {
  height: 100dvh;
  margin: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.55 var(--body);
}
[hidden] { display: none !important; }
h1, h2, h3, p, ul, figure { margin: 0; }
h1, h2 { font: 400 1em/1.02 var(--display); }
h2 { font-size: clamp(2.45rem, 5.3vw, 5.05rem); letter-spacing: -.052em; overflow-wrap: anywhere; }
h3 { font-weight: 750; }
button, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent); color: var(--on-accent); }
.shell { width: var(--shell); margin-inline: auto; }
.mono { font: 500 .72rem/1.35 var(--mono); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.masthead { border-bottom: 1px solid var(--line); }
.masthead-inner {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand { position: relative; display: inline-block; vertical-align: middle; }
.brand-wordmark { display: block; width: clamp(114px, 13vw, 144px); height: auto; }
.brand-hat {
  position: absolute;
  right: 2%;
  bottom: calc(81% - 3px);
  width: 14%;
  height: auto;
  transform: rotate(12deg);
  transform-origin: 50% 80%;
}
.masthead-actions { display: flex; align-items: center; gap: clamp(10px, 2vw, 18px); }
.masthead-actions .button { min-height: 32px; }
.masthead-actions .button:disabled { opacity: .5; }
.mode { display: inline-flex; align-items: center; gap: 8px; font: 500 .71rem/1.3 var(--mono); color: var(--dim); }
.mode i { width: 6px; height: 6px; background: currentColor; flex: none; }
.mode.live { color: var(--accent); }

.reader {
  --stroke: 64px;
  --pull: 0px;
  --charge: 0;
  min-height: 0;
  overflow: hidden auto;
  scrollbar-width: none;
  overscroll-behavior: none;
  overflow-anchor: none;
  scroll-behavior: auto;
}
.reader::-webkit-scrollbar { display: none; }
.reader[data-fullscreen] { visibility: hidden; overflow: hidden; }
.reader:focus { outline: none; }
.reader:focus-visible .scroll-arrow { outline: 1px solid var(--accent); outline-offset: 4px; }
.reader-track { height: calc(100% + var(--stroke) * 2); }
.reader-screen {
  height: calc(100% - var(--stroke) * 2);
  position: sticky;
  top: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
}
.workbench {
  display: grid;
  grid-template-columns: minmax(0, .91fr) minmax(0, 1.09fr);
  gap: clamp(8px, 2.9vw, 56px);
  min-height: 0;
}
.workbench[data-phase="preview"] { grid-template-columns: minmax(0, 1fr); }
.stage-viewport {
  min-height: 0;
  min-width: 0;
  overflow: hidden auto;
  scrollbar-width: thin;
  scrollbar-color: #a9b0a2 var(--bg);
}
.workbench[data-phase="preview"] .stage-viewport { overflow: clip; }
.pane {
  min-height: 100%;
  display: grid;
  align-content: safe center;
  padding-block: clamp(22px, 5dvh, 60px);
  padding-inline: 2px;
}
.step-content { min-width: 0; translate: 0 var(--pull); }
.eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 16px;
  color: var(--accent);
  font: 600 .73rem/1.35 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}
.eyebrow :nth-child(2) { color: var(--dim); }
.idea-pane h1 {
  margin-bottom: clamp(20px, 4dvh, 42px);
  font-size: clamp(3.15rem, 6.25vw, 6.5rem);
  letter-spacing: -.066em;
}
.idea-field {
  max-width: 520px;
  padding: 15px 16px 7px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.idea-field:focus-within { border-color: var(--accent); }
.idea-field:has([aria-invalid="true"]) { border-color: var(--rose); }
.idea-field textarea {
  display: block;
  width: 100%;
  min-height: 3.5em;
  padding: 0;
  resize: none;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--ink);
  font-size: clamp(1rem, 1.7vw, 1.17rem);
  line-height: 1.46;
}
.idea-field textarea::placeholder { color: var(--dim); }
.idea-meta { display: flex; min-height: 22px; align-items: baseline; justify-content: space-between; gap: 10px; color: var(--dim); }
.idea-meta .mono { flex: none; margin-left: auto; }
#idea-feedback { color: var(--rose); font-size: .8rem; }
textarea[readonly] + .idea-meta #idea-feedback { color: var(--muted); }
.step-caption { max-width: 48ch; margin-top: 16px; color: var(--muted); font-size: clamp(.94rem, 1.25vw, 1.16rem); overflow-wrap: anywhere; }
.field-note {
  max-width: 43ch;
  margin-top: clamp(22px, 5dvh, 50px);
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.note-label { margin-bottom: 7px; color: var(--accent); letter-spacing: .07em; }
.field-note h3, .feature-card h3 { color: var(--ink); font-size: clamp(1.14rem, 2vw, 1.52rem); line-height: 1.12; letter-spacing: -.04em; overflow-wrap: anywhere; }
#guide-copy, .feature-detail { color: var(--muted); margin-top: 7px; overflow-wrap: anywhere; }
.blocks { list-style: none; display: grid; gap: 6px; margin-top: 19px; padding: 0; max-width: 32ch; }
.blocks li { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-top: 1px solid var(--line); color: var(--ink); }
.blocks li::before { content: ""; width: 6px; height: 6px; flex: none; background: var(--accent); }
.build-note-points { max-width: 46ch; overflow-wrap: anywhere; }
[data-note-pricing] #build-note-title { font-size: clamp(2.15rem, 4.8vw, 4.5rem); }
.build-note-plans {
  max-width: 540px;
  margin: clamp(12px, 3dvh, 23px) 0 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.build-note-plans > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 12px;
  align-items: baseline;
  padding: 8px 12px;
}
.build-note-plans > div + div { border-top: 1px solid var(--line); }
.build-note-plans dt, .note-price { font-weight: 700; }
.build-note-plans dd { margin: 0; }
.note-price { color: var(--accent); text-align: end; }
.note-plan-detail { grid-column: 1 / -1; color: var(--muted); font-size: .83rem; }
.build-note-link {
  display: inline-block;
  color: var(--accent);
  font-size: .88rem;
  font-weight: 650;
  text-underline-offset: 3px;
}
.build-note-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 10px;
}
.walkthrough-dialog {
  width: min(760px, calc(100% - 28px));
  max-height: calc(100dvh - 28px);
  padding: clamp(14px, 3vw, 25px);
  overflow: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--bg);
  color: var(--ink);
  box-shadow: 0 24px 72px #1c221f45;
}
.walkthrough-dialog::backdrop { background: #1c221fa3; }
.walkthrough-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.walkthrough-header .eyebrow { margin-bottom: 5px; }
.walkthrough-header h2 { font-size: clamp(1.85rem, 4.6vw, 2.75rem); }
.walkthrough-picker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}
.walkthrough-picker label { color: var(--muted); font-size: .88rem; }
.walkthrough-picker select {
  flex: 1;
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
}
.walkthrough-description { margin: 10px 0 12px; color: var(--muted); font-size: .92rem; }
.walkthrough-dialog video {
  display: block;
  width: 100%;
  max-height: min(53dvh, 420px);
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.model-panel {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  margin: 0;
}
.viewport { position: relative; display: grid; place-items: center; min-height: 0; overflow: hidden; isolation: isolate; }
.viewport canvas {
  display: none;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.has-webgl .viewport canvas { display: block; }
.model-caption {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 0 2px 18px;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: .07em;
}
.model-caption span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--accent); }
.model-caption span:last-child { flex: none; }
.model-fallback {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: clamp(5px, 1.5vh, 12px);
  width: min(85%, 65dvh);
  aspect-ratio: 1.42;
  padding: clamp(11px, 2.5vw, 25px);
  outline: 1px solid var(--sheet-line);
  outline-offset: -7px;
  background: repeating-linear-gradient(0deg, #60412216 0 1px, transparent 1px 16px), var(--sheet);
  box-shadow: 0 7px #aa7941, 12px 24px 50px #45311f35;
  color: var(--ink);
  transform: perspective(700px) rotateX(18deg) rotateZ(calc(-9deg + var(--charge) * 4deg));
}
.has-webgl .model-fallback { display: none; }
.paper-kicker { font: 700 clamp(.55rem, 1vw, .71rem)/1.2 var(--mono); letter-spacing: .045em; }
.paper-title {
  grid-row: 3;
  font: italic 700 clamp(1.1rem, 3.2vw, 2.7rem)/1.03 Georgia, serif;
  overflow-wrap: anywhere;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}
.paper-screens {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: clamp(4px, .75vw, 10px);
  min-height: 0;
}
.paper-screens:empty { border: 1px dashed var(--sheet-line); margin-block: 6px; }
.flat-screen { min-width: 0; align-self: center; min-height: 58%; padding: 4px; overflow: hidden; border: 1px solid var(--sheet-line); }
.flat-screen[data-raised="true"] {
  background: linear-gradient(#496e55 var(--screen-fill, 0%), #293b32 var(--screen-fill, 0%));
  border-color: #293b32;
  color: var(--panel);
  box-shadow: 2px 3px var(--sheet-line);
}
.flat-screen strong, .flat-block { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font: 600 clamp(.52rem, .9vw, .74rem)/1.25 var(--mono); }
.flat-block { margin-top: 4px; padding: 2px; border: 1px solid #849883; }
.flat-screen[data-raised="false"] .flat-block { color: transparent; }

.feature-card {
  max-width: 440px;
  margin-top: 18px;
}
.feature-note {
  padding: 13px 16px;
  border: 1px solid #c99b5d;
  background: var(--sheet);
  color: var(--ink);
  box-shadow: 3px 4px #b7864d;
}
.feature-note h3 {
  color: inherit;
  font: italic 700 clamp(1.2rem, 2.5vw, 1.9rem)/1.1 Georgia, serif;
}
.feature-note .feature-detail { margin-top: 5px; color: #473725; font-size: .88rem; }
.choices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-top: 15px; }
.choice {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 2px 5px;
  min-height: 50px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
}
.choice input { width: 13px; height: 13px; margin: 0; accent-color: var(--decision, var(--accent)); }
.choice:has(:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.choice:has(input:checked) { border-color: var(--decision, var(--accent)); color: var(--decision, var(--accent)); }
.choice:has(input:disabled) { cursor: default; }
.choice span { font-size: .85rem; font-weight: 700; }
.choice small { grid-column: 2; color: var(--muted); font: 500 .66rem/1.25 var(--mono); }
[data-choice="keep"] { --decision: var(--accent); }
[data-choice="later"] { --decision: var(--gold); }
[data-choice="never"] { --decision: var(--rose); }
.scope-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; margin-top: 20px; }
.scope-group { min-width: 0; padding: 9px 11px; border: 1px solid var(--line); background: var(--panel); overflow-wrap: anywhere; }
.scope-group h3 { color: var(--decision); font-size: .93rem; }
.scope-group ul, .scope-group p { margin-top: 4px; font-size: .79rem; color: var(--muted); }
.scope-group ul { padding-left: 14px; }

.preview-pane {
  height: 100%;
  min-height: 0;
  grid-template-rows: minmax(0, 1fr);
  padding-block: clamp(12px, 2dvh, 22px);
}
.preview-content { display: flex; flex-direction: column; min-height: 0; gap: 12px; translate: none; }
.preview-content > :not(.preview-window) { flex: none; }
.preview-content h2 { font-size: clamp(1.85rem, 4vw, 3.3rem); }
.preview-content .eyebrow, .preview-content .step-caption { margin: 0 0 4px; }
.preview-content .step-caption { margin-top: 5px; }
.preview-window {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  flex: 1;
  min-height: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}
.instrument-bar {
  min-height: 35px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 11px;
  color: var(--dim);
  font: 600 .68rem/1.25 var(--mono);
  letter-spacing: .05em;
  text-transform: uppercase;
}
.instrument-bar span:first-child { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--accent); }
.instrument-bar span:last-child { flex: none; }
.preview-surface { position: relative; min-height: 0; }
.reader[data-fullscreen] .preview-surface {
  position: fixed;
  inset: 0;
  z-index: 1;
  visibility: visible;
  background: var(--bg);
}
.preview-surface iframe { display: block; border: 0; width: 100%; height: 100%; background: white; }
.preview-surface iframe[inert] { pointer-events: none; }
.preview-surface iframe:not([srcdoc]) {
  background: linear-gradient(#496e551c 1px, transparent 1px), linear-gradient(90deg, #496e551c 1px, transparent 1px), var(--panel);
  background-size: 28px 28px;
}
.preview-back {
  position: absolute;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  box-shadow: 0 3px 14px #1c221f29;
}
.preview-back:hover { border-color: var(--accent); }
.preview-back .brand-wordmark { width: 106px; }
.preview-status {
  position: absolute;
  inset-inline: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  margin-inline: auto;
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  font-size: .84rem;
}
html[data-preview-transition] :is(.model-panel .viewport, .preview-surface) { view-transition-name: preview-handoff; }
html[data-preview-transition]::view-transition { pointer-events: none; }
html[data-preview-transition]::view-transition-group(preview-handoff) {
  animation-duration: 720ms;
  animation-timing-function: cubic-bezier(.3,.03,.2,1);
  z-index: 1;
}
html[data-preview-transition]::view-transition-old(root),
html[data-preview-transition]::view-transition-new(root) { animation-duration: 460ms; }
html[data-preview-transition]::view-transition-old(preview-handoff),
html[data-preview-transition]::view-transition-new(preview-handoff) {
  height: 100%;
  object-fit: contain;
  mix-blend-mode: normal;
  transform-origin: center;
}
html[data-preview-transition="open"]::view-transition-old(preview-handoff) { animation: model-into-preview 720ms cubic-bezier(.3,.03,.2,1) both; }
html[data-preview-transition="open"]::view-transition-new(preview-handoff) { animation: preview-from-model 720ms cubic-bezier(.3,.03,.2,1) both; }
html[data-preview-transition="back"]::view-transition-old(preview-handoff) { animation: preview-from-model 720ms cubic-bezier(.3,.03,.2,1) reverse both; }
html[data-preview-transition="back"]::view-transition-new(preview-handoff) { animation: model-into-preview 720ms cubic-bezier(.3,.03,.2,1) reverse both; }
html:is([data-preview-transition="expand"], [data-preview-transition="shrink"])::view-transition-old(preview-handoff),
html:is([data-preview-transition="expand"], [data-preview-transition="shrink"])::view-transition-new(preview-handoff) { object-fit: cover; }
@keyframes model-into-preview {
  0% { opacity: 1; transform: none; }
  48% { opacity: .86; transform: perspective(1000px) rotateY(-9deg) scale(1.12); }
  100% { opacity: 0; transform: perspective(1000px) rotateY(-20deg) scale(1.3); }
}
@keyframes preview-from-model {
  0% { opacity: 0; clip-path: inset(25% 26% 25% 26% round 8px); transform: perspective(1000px) rotateY(13deg) scale(.92); }
  25% { opacity: 0; }
  62% { opacity: 1; }
  100% { opacity: 1; clip-path: inset(0); transform: none; }
}
.utility-actions { display: flex; flex-wrap: wrap; gap: 7px; }
.field-note .utility-actions { margin-top: 12px; }
.button { padding: 6px 9px; border: 1px solid var(--line); background: var(--raised); color: var(--ink); font-size: .8rem; }
.button:hover { border-color: var(--accent); }
.danger, .feedback { color: var(--rose); }
.feedback { font-size: .82rem; }

.reader-footer { position: relative; border-top: 1px solid var(--line); background: var(--bg); }
.reader-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(var(--charge));
  transform-origin: center;
  pointer-events: none;
}
.reader-footer-inner {
  display: grid;
  min-height: 80px;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding-block: 8px max(8px, env(safe-area-inset-bottom));
}
.step-marker { color: var(--dim); }
.step-marker .mono { color: var(--accent); }
.back-hint, .scroll-help { color: var(--dim); font-size: .72rem; line-height: 1.35; margin-top: 3px; }
.scroll-prompt { grid-column: 2; display: flex; align-items: center; gap: 12px; }
.scroll-arrow {
  flex: none;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--on-accent);
  font: 800 1.45rem/1 var(--mono);
}
.scroll-prompt[data-state="wait"] .scroll-arrow { background: var(--raised); color: var(--accent); }
.scroll-prompt[data-state="done"] .scroll-arrow { background: var(--raised); color: var(--muted); }
#scroll-instruction { font-size: .93rem; font-weight: 700; line-height: 1.3; }

@media (max-width: 780px) {
  .masthead-inner { min-height: 49px; }
  .workbench { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr) minmax(125px, 42%); gap: 0; }
  .workbench[data-phase="preview"] { grid-template-rows: minmax(0, 1fr); }
  .workbench[data-note-pricing] { grid-template-rows: minmax(0, 1fr); }
  .workbench[data-note-pricing] .model-panel { display: none; }
  .pane { padding-block: 14px; }
  .eyebrow { margin-bottom: 8px; }
  .idea-pane h1 { font-size: clamp(2.45rem, 9.9vw, 4.6rem); margin-bottom: 14px; }
  h2 { font-size: clamp(2.1rem, 8.4vw, 3.6rem); }
  .step-caption { margin-top: 8px; }
  .field-note { margin-top: 16px; padding-top: 9px; }
  .feature-card { margin-top: 12px; }
  .model-caption { padding-bottom: 7px; font-size: .64rem; }
  .model-fallback { width: min(75%, 33dvh); }
  .paper-screens { gap: 3px; }
  .reader-footer-inner { min-height: 67px; grid-template-columns: minmax(0, 1fr) auto; }
  .back-hint { display: none; }
  .scroll-arrow { width: 34px; height: 34px; }
}
@media (max-width: 380px) {
  .reader-footer-inner, .scroll-prompt { gap: 7px; }
  .reader-footer-inner { grid-template-columns: minmax(50px, .3fr) minmax(0, 1fr); }
  .scope-list { grid-template-columns: minmax(0, 1fr); }
  .model-caption { gap: 4px; }
}
@media (max-height: 620px) and (max-width: 780px) {
  .workbench { grid-template-rows: minmax(0, 1fr) minmax(95px, 34%); }
  .workbench[data-phase="preview"] { grid-template-rows: minmax(0, 1fr); }
  .model-fallback { width: min(65%, 27dvh); }
  .idea-pane h1 { font-size: clamp(2.25rem, 9vw, 3.2rem); }
  .idea-field { padding-top: 8px; }
}
@media (max-height: 490px) {
  .masthead-inner { min-height: 39px; }
  .reader-footer-inner { min-height: 53px; }
  .preview-pane { padding-block: 6px; }
  .preview-content { gap: 6px; }
  .preview-content h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
  .preview-content .step-caption { max-width: none; font-size: .82rem; }
  .preview-window .instrument-bar { min-height: 28px; padding-block: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  .step-content { translate: none; }
  .model-fallback { transform: none; }
}