:root {
  --ink: #10242b;
  --fog: #eef2ed;
  --paper: #fbfcf8;
  --sea: #3e8e86;
  --apricot: #f57a57;
  --butter: #f1d47a;
  --plum: #6b4d78;
  --rule: #bfd0c7;
  --measure: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--fog); color: var(--ink); font-family: var(--body); line-height: 1.55; }
img { display: block; width: 100%; object-fit: cover; }
a { color: inherit; }
.skip { position: fixed; z-index: 30; left: 1rem; top: -5rem; background: var(--butter); color: var(--ink); padding: .8rem 1rem; font-weight: 800; }
.skip:focus { top: 1rem; }
:focus-visible { outline: 3px solid var(--apricot); outline-offset: 4px; }

.mast { min-height: 78px; padding: 0 clamp(1rem, 4vw, 4rem); display: flex; align-items: center; justify-content: space-between; gap: 2rem; color: white; background: var(--ink); border-bottom: 1px solid #47636a; }
.wordmark { display: inline-flex; align-items: center; gap: .7rem; font-family: var(--display); font-weight: 900; font-size: 1.25rem; letter-spacing: .06em; text-decoration: none; text-transform: uppercase; }
.mini-mark { width: 28px; height: 28px; display: inline-block; border: 6px solid var(--sea); box-shadow: inset -7px -7px 0 -3px var(--apricot); }
.mast nav { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; font-family: var(--measure); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.mast nav a { padding: .75rem .15rem; text-decoration-thickness: 2px; text-underline-offset: 5px; }

main { overflow: clip; }
.hero { min-height: 760px; position: relative; display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: clamp(2rem, 6vw, 6rem); align-items: center; padding: clamp(4rem, 9vw, 8rem) clamp(1.25rem, 6vw, 7rem); background: var(--paper); }
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .number { font-family: var(--measure); color: var(--sea); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2 { font-family: var(--display); line-height: .93; letter-spacing: -.02em; text-transform: uppercase; }
h1 { margin: .5rem 0 1.4rem; font-size: clamp(4rem, 8vw, 8.4rem); }
h2 { margin: .45rem 0 1.2rem; font-size: clamp(2.4rem, 5vw, 5.4rem); }
.lede { max-width: 44rem; font-size: clamp(1.1rem, 2vw, 1.4rem); }
.primary-link { display: inline-flex; min-height: 50px; align-items: center; margin-top: 1rem; padding: .7rem 1.15rem; color: white; background: var(--apricot); border: 2px solid var(--ink); border-radius: 5px; box-shadow: 6px 6px 0 var(--ink); font-family: var(--measure); font-weight: 800; text-decoration: none; }
.primary-link:active { transform: translate(3px, 3px); box-shadow: 3px 3px 0 var(--ink); }
.hero-image { position: relative; margin: 0; }
.hero-image img { aspect-ratio: 3 / 2; border: 3px solid var(--ink); border-radius: 8px; box-shadow: 18px 18px 0 var(--sea); }
figcaption { margin-top: .85rem; font-family: var(--measure); font-size: .74rem; color: #465e62; }
.corner { position: absolute; width: 72px; height: 72px; border-color: var(--ink); border-style: solid; pointer-events: none; }
.corner-a { left: 1.5rem; top: 1.5rem; border-width: 8px 0 0 8px; }
.corner-b { right: 1.5rem; top: 1.5rem; border-width: 8px 8px 0 0; }
.corner-c { left: 1.5rem; bottom: 1.5rem; border-width: 0 0 8px 8px; }
.corner-d { right: 1.5rem; bottom: 1.5rem; border-width: 0 8px 8px 0; }

.demo-band { display: grid; grid-template-columns: minmax(240px, .72fr) minmax(320px, 1.28fr); gap: clamp(2rem, 7vw, 7rem); padding: clamp(4rem, 8vw, 8rem) clamp(1.25rem, 7vw, 8rem); color: white; background: var(--ink); }
.demo-band h2 { font-size: clamp(2.7rem, 5.8vw, 6rem); }
.web-board-wrap { max-width: 800px; }
.web-board { position: relative; aspect-ratio: 1.45; overflow: hidden; border: 3px solid white; border-radius: 8px; background-color: #fbfcf8; background-image: linear-gradient(#d7e2dc 1px, transparent 1px), linear-gradient(90deg, #d7e2dc 1px, transparent 1px); background-size: 8.333% 10%; box-shadow: 14px 14px 0 var(--sea); }
.block { position: absolute; border: 3px solid var(--ink); border-radius: 10px; box-shadow: 4px 4px 0 rgba(16, 36, 43, .45); }
.block.sofa { left: 12%; top: 56%; width: 42%; height: 20%; background: var(--sea); cursor: grab; }
.block.table { left: 60%; top: 34%; width: 22%; height: 28%; background: var(--butter); border-radius: 48%; }
.demo-controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; margin-top: 1.4rem; }
.demo-controls button { min-height: 48px; color: white; background: transparent; border: 2px solid white; border-radius: 4px; font: 800 .78rem var(--measure); }
.demo-controls button:hover, .demo-controls button:focus-visible { color: var(--ink); background: var(--butter); }
.observation { padding: 1rem; border-left: 5px solid var(--apricot); background: #17353d; font-family: var(--measure); }

.chapter { position: relative; padding: clamp(4.5rem, 9vw, 9rem) clamp(1.25rem, 7vw, 8rem); }
.chapter-copy { max-width: 780px; }
.chapter-copy p:not(.number) { max-width: 62ch; font-size: 1.08rem; }
.quadrant { display: grid; grid-template-columns: .85fr 1.15fr; grid-template-areas: "copy q1" "q2 q1" "q2 q3" "q4 q3"; gap: clamp(1rem, 3vw, 2.5rem); background: var(--fog); }
.quadrant .chapter-copy { grid-area: copy; align-self: center; }
.quadrant img { min-height: 250px; height: 100%; border: 2px solid var(--ink); }
.quadrant .q1 { grid-area: q1; min-height: 500px; }
.quadrant .q2 { grid-area: q2; }
.quadrant .q3 { grid-area: q3; min-height: 430px; }
.quadrant .q4 { grid-area: q4; }

.place-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; grid-template-areas: "copy main main" "a main main" "a b c" "d b c"; gap: 1rem; color: white; background: var(--ink); }
.place-grid .chapter-copy { grid-area: copy; }
.place-grid img { min-height: 260px; height: 100%; border: 1px solid #86a2a5; }
.place-grid .place-main { grid-area: main; min-height: 580px; }
.place-grid img:nth-of-type(2) { grid-area: a; }
.place-grid img:nth-of-type(3) { grid-area: b; }
.place-grid img:nth-of-type(4) { grid-area: c; }
.place-grid img:nth-of-type(5) { grid-area: d; }
.dark-copy .number { color: var(--butter); }

.edge-observe { display: grid; grid-template-columns: 1.4fr repeat(3, minmax(180px, .7fr)); gap: 1.2rem; align-items: end; background: var(--paper); }
.edge-observe figure { margin: 0; }
.edge-observe figure:nth-of-type(2) { transform: translateY(3rem); }
.edge-observe img { aspect-ratio: 1; border: 2px solid var(--ink); }

.sheet-stack { display: grid; grid-template-columns: .72fr 1.28fr; gap: 4rem; background: #dce9e3; }
.stacked-images { position: relative; min-height: 660px; }
.stacked-images img { position: absolute; width: 66%; aspect-ratio: 3/2; border: 3px solid var(--ink); box-shadow: 10px 10px 0 rgba(16, 36, 43, .35); }
.stacked-images img:nth-child(1) { left: 0; top: 0; z-index: 1; }
.stacked-images img:nth-child(2) { right: 0; top: 8rem; z-index: 2; }
.stacked-images img:nth-child(3) { left: 5%; top: 22rem; z-index: 3; }
.stacked-images img:nth-child(4) { right: 4%; top: 30rem; z-index: 4; }

.compare-desk { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; background: var(--fog); }
.compare-desk .chapter-copy { grid-column: 1 / -1; }
.compare-desk img { min-height: 340px; height: 100%; border: 2px solid var(--ink); }
.compare-desk .wide { grid-column: 1 / -1; min-height: min(620px, 55vw); }
.boundary-callout { margin: clamp(2rem, 6vw, 6rem); padding: clamp(2rem, 6vw, 6rem); color: white; background: var(--plum); border: 3px solid var(--ink); box-shadow: 12px 12px 0 var(--ink); }
.boundary-callout h2 { max-width: 900px; }
.boundary-callout p { max-width: 72ch; }
.rule-link { display: inline-block; margin-top: 1rem; font-family: var(--measure); font-weight: 800; text-underline-offset: 6px; }
footer { display: flex; justify-content: space-between; gap: 2rem; padding: 2rem clamp(1.25rem, 5vw, 5rem); color: white; background: var(--ink); font: .78rem var(--measure); }

/* Privacy uses a separate always-open measurement-notebook structure. */
.policy { background: #f7f4ec; }
.policy-cover { padding: clamp(4rem, 9vw, 9rem) clamp(1.25rem, 8vw, 9rem) clamp(3rem, 6vw, 6rem); background: var(--butter); border-bottom: 3px solid var(--ink); }
.policy-cover h1 { max-width: 1100px; font-size: clamp(4rem, 9vw, 9rem); }
.policy-cover p { max-width: 68ch; font-size: 1.05rem; }
.policy-cover .effective { margin-top: 2rem; font-family: var(--measure); font-size: .78rem; font-weight: 800; }
.cut-list { padding: clamp(2rem, 5vw, 5rem) clamp(1.25rem, 8vw, 9rem); background: var(--ink); color: white; }
.cut-list h2 { font-size: 2rem; color: var(--butter); }
.cut-list ol { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .6rem 2rem; margin: 0; padding: 0; list-style-position: inside; counter-reset: cuts; }
.cut-list li { min-height: 48px; padding: .7rem 0; border-bottom: 1px solid #587177; font: .78rem var(--measure); }
.cut-list a { text-underline-offset: 5px; }
.policy-notebook { max-width: 1320px; margin: 0 auto; padding: clamp(3rem, 7vw, 7rem) clamp(1.25rem, 5vw, 5rem); }
.policy-row { display: grid; grid-template-columns: minmax(230px, .66fr) minmax(0, 1.34fr); gap: clamp(2rem, 7vw, 7rem); align-items: start; padding: clamp(3rem, 7vw, 7rem) 0; border-bottom: 2px solid var(--ink); }
.policy-row.flip .folio { order: 2; }
.policy-row.flip > div:last-child { order: 1; }
.policy-row h2 { font-size: clamp(2.5rem, 5vw, 5rem); }
.policy-row p { max-width: 72ch; font-size: 1.05rem; }
.folio { position: relative; }
.folio img { aspect-ratio: 1; border: 2px solid var(--ink); box-shadow: 10px 10px 0 var(--sea); }
.folio span { position: absolute; z-index: 2; left: -1rem; top: -1rem; display: grid; place-items: center; width: 58px; height: 58px; color: white; background: var(--apricot); border: 2px solid var(--ink); font: 900 .9rem var(--measure); }
code { padding: .15rem .3rem; background: #e1e7df; overflow-wrap: anywhere; }
.policy-close { max-width: 780px; margin: 0 auto; padding: 2rem 1.25rem 6rem; font: .86rem var(--measure); }

@media (max-width: 900px) {
  .mast { align-items: flex-start; flex-direction: column; gap: .5rem; padding-block: 1rem; }
  .hero, .demo-band, .sheet-stack { grid-template-columns: 1fr; }
  .hero { min-height: 0; }
  .quadrant { grid-template-columns: 1fr 1fr; grid-template-areas: "copy copy" "q1 q1" "q2 q3" "q4 q3"; }
  .place-grid { grid-template-columns: 1fr 1fr; grid-template-areas: "copy copy" "main main" "a b" "c d"; }
  .edge-observe { grid-template-columns: 1fr 1fr; }
  .edge-observe .chapter-copy { grid-column: 1 / -1; }
  .edge-observe figure:nth-of-type(2) { transform: none; }
  .cut-list ol { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stacked-images { min-height: 580px; }
}

@media (max-width: 620px) {
  .mast nav { width: 100%; justify-content: space-between; }
  .hero { padding-top: 4rem; }
  .hero-image img { box-shadow: 8px 8px 0 var(--sea); }
  .corner { width: 45px; height: 45px; }
  .demo-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quadrant, .place-grid, .edge-observe, .compare-desk { display: flex; flex-direction: column; }
  .quadrant img, .place-grid img, .compare-desk img { min-height: 250px !important; aspect-ratio: 3 / 2; }
  .sheet-stack { gap: 1rem; }
  .stacked-images { min-height: 480px; }
  .stacked-images img { width: 82%; }
  .stacked-images img:nth-child(2) { top: 7rem; }
  .stacked-images img:nth-child(3) { top: 15rem; }
  .stacked-images img:nth-child(4) { top: 23rem; }
  .cut-list ol { grid-template-columns: 1fr; }
  .policy-row, .policy-row.flip { grid-template-columns: 1fr; gap: 1rem; }
  .policy-row .folio, .policy-row.flip .folio, .policy-row > div:last-child, .policy-row.flip > div:last-child { order: initial; }
  .folio { max-width: 340px; }
  footer { flex-direction: column; }
}

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