:root {
  color-scheme: light;
  --ink: #17201d;
  --paper: #f4f0e7;
  --surface: #fffdf7;
  --line: #b9b4a8;
  --green: #1f6847;
  --green-soft: #dceade;
  --red: #a33d32;
  --red-soft: #f3dfda;
  --yellow: #d7a82f;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--paper);
  color: var(--ink);
}

* { box-sizing: border-box; }

body { margin: 0; min-width: 20rem; }

button, input, select, textarea { font: inherit; }

.site-header {
  min-height: 6rem;
  padding: 1.25rem clamp(1rem, 4vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
  background: var(--surface);
}

.site-header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 0.85;
  letter-spacing: -0.075em;
}

.eyebrow, .section-number {
  margin: 0 0 0.45rem;
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.stage { display: grid; gap: 0.15rem; text-align: right; }
.stage span { font-size: 0.72rem; letter-spacing: 0.13em; text-transform: uppercase; }
.stage strong { font-size: 0.95rem; }
.stage a { font-size: 0.82rem; font-weight: 600; color: var(--green); text-underline-offset: 0.2em; }
.stage a:hover { color: var(--ink); }

main { padding: 0 clamp(1rem, 4vw, 4rem) 4rem; }

.intro {
  max-width: 95rem;
  margin: 0 auto;
  padding: clamp(2rem, 7vw, 6rem) 0;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(16rem, 0.7fr);
  gap: 3rem;
  align-items: end;
}

.intro h2 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 7.2rem);
  line-height: 0.88;
  letter-spacing: -0.07em;
}

.lede { margin: 0; max-width: 35rem; font-size: 1.08rem; line-height: 1.65; }

.workspace {
  max-width: 95rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(17rem, 23rem) minmax(0, 1fr);
  border: 1px solid var(--ink);
  background: var(--surface);
}

.controls {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-content: start;
  border-right: 1px solid var(--ink);
  background: #ebe6da;
}

.control { display: grid; gap: 0.35rem; align-content: start; }
.control-wide { grid-column: 1 / -1; }
.control label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }

textarea, select, input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.72rem;
  color: var(--ink);
  background: var(--surface);
}

textarea { min-height: 8rem; resize: vertical; line-height: 1.4; }
textarea:focus, select:focus, input:focus, button:focus-visible { outline: 3px solid color-mix(in srgb, var(--yellow) 70%, transparent); outline-offset: 1px; }

.input-unit { display: grid; grid-template-columns: 1fr auto; }
.input-unit span { padding: 0.72rem; border: 1px solid var(--line); border-left: 0; background: #ded8ca; }

.check-control {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0;
}

.check-control input { width: 1.1rem; height: 1.1rem; accent-color: var(--green); }

.download {
  grid-column: 1 / -1;
  border: 0;
  padding: 0.9rem 1rem;
  background: var(--ink);
  color: white;
  font-weight: 600;
  cursor: pointer;
}

.download:hover { background: var(--green); }

.preview-column { min-width: 0; padding: clamp(1.25rem, 3vw, 2.5rem); }

.preview-heading { display: flex; justify-content: space-between; gap: 2rem; align-items: start; margin-bottom: 1.5rem; }
.preview-heading h3 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.6rem); letter-spacing: -0.04em; }

.status { padding: 0.4rem 0.65rem; color: var(--green); background: var(--green-soft); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.status.error { color: var(--red); background: var(--red-soft); }

.canvas-shell {
  width: 100%;
  overflow: auto;
  padding: clamp(0.7rem, 2vw, 1.5rem);
  background-color: #d8d2c5;
  background-image: linear-gradient(45deg, #cbc4b6 25%, transparent 25%), linear-gradient(-45deg, #cbc4b6 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #cbc4b6 75%), linear-gradient(-45deg, transparent 75%, #cbc4b6 75%);
  background-size: 1rem 1rem;
  background-position: 0 0, 0 0.5rem, 0.5rem -0.5rem, -0.5rem 0;
}

canvas { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; background: white; box-shadow: 0 0.5rem 1.5rem rgb(23 32 29 / 20%); }

.metrics { margin: 1.5rem 0 0; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.metrics div { min-width: 0; padding: 0.8rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.metrics dt { color: #645f55; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.metrics dd { margin: 0.3rem 0 0; font-weight: 600; overflow-wrap: anywhere; }
.metrics .metric-wide { grid-column: 1 / -1; }

.notice { max-width: 95rem; margin: 1.25rem auto 0; padding: 1rem 1.25rem; display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; border-left: 0.35rem solid var(--yellow); background: #ebe6da; }
.notice strong { white-space: nowrap; }
.notice p { margin: 0; }

.raster-study {
  max-width: 95rem;
  margin: clamp(3rem, 8vw, 7rem) auto 0;
  display: grid;
  grid-template-columns: minmax(17rem, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.raster-copy { position: sticky; top: 1rem; }
.raster-copy h2 { margin: 0 0 1.2rem; font-size: clamp(2.4rem, 5vw, 5rem); line-height: 0.92; letter-spacing: -0.065em; }
.raster-copy > p:not(.section-number) { max-width: 34rem; line-height: 1.65; }
.raster-control { max-width: 13rem; margin-top: 1.5rem; }

.raster-facts { margin: 1.5rem 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.raster-facts div { padding: 0.75rem 0.5rem 0.75rem 0; border-bottom: 1px solid var(--line); }
.raster-facts dt { color: #645f55; font-size: 0.66rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.raster-facts dd { margin: 0.25rem 0 0; font-weight: 600; }

.artifact-link { display: inline-block; margin-top: 1rem; color: var(--green); font-weight: 600; text-underline-offset: 0.2em; }
.artifact-link:hover { color: var(--ink); }

.raster-images { display: grid; gap: 1.5rem; }
.raster-images figure { margin: 0; border: 1px solid var(--ink); background: #d8d2c5; }
.raster-images figcaption { padding: 0.65rem 0.8rem; border-bottom: 1px solid var(--ink); background: var(--surface); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.raster-images img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: contain; background: white; }

@media (max-width: 850px) {
  .intro, .workspace, .raster-study { grid-template-columns: 1fr; }
  .intro { gap: 1.5rem; }
  .controls { border-right: 0; border-bottom: 1px solid var(--ink); }
  .metrics { grid-template-columns: 1fr 1fr; }
  .notice { grid-template-columns: 1fr; gap: 0.35rem; }
  .raster-copy { position: static; }
}

@media (max-width: 480px) {
  .site-header { align-items: end; }
  .stage strong { max-width: 8rem; }
  .controls { grid-template-columns: 1fr; }
  .control-wide, .check-control, .download { grid-column: auto; }
  .metrics { grid-template-columns: 1fr; }
  .metrics .metric-wide { grid-column: auto; }
  .raster-facts { grid-template-columns: 1fr; }
}