:root {
  --surface-app: #f8fafc;
  --surface-panel: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border: #cbd5e1;
  --primary: #000000;
  --primary-hover: #000000;
  --radius: 0;
  --font-sans: "Geist", sans-serif;
  --font-serif: "Instrument Serif", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-mono: "Geist Mono", ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; background: var(--surface-app); color: var(--text-primary); font-family: var(--font-sans); }
body { font-size: 16px; line-height: 1.5; font-variant-numeric: tabular-nums; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; }

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 40;
  padding: 8px 12px;
  background: var(--primary);
  color: #fff;
}
.skip:focus { top: 12px; }

.btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-panel);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  cursor: pointer;
  transition: background-color 180ms ease-out, color 180ms ease-out;
}
.btn.primary { color: #fff; background: var(--primary); border-color: var(--primary); }
.btn.primary:hover { background: #1a1a1a; }
.btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }

.hero {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  justify-items: center;
  align-items: center;
  gap: 32px;
  padding: 48px 32px;
  text-align: center;
  color: var(--primary);
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: #F7F8FA;
  background-image: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0) 58%, rgba(15, 23, 42, 0.06) 100%);
  border-bottom: 1px solid var(--border);
}
.hero::before, .hero::after {
  content: "";
  position: absolute;
  pointer-events: none;
  contain: paint;
}
.hero::before {
  inset: -32vh 0 0;
  z-index: -2;
  background-image:
    radial-gradient(110% 42vh at 50% 100%, #9AA0A8 0%, #6B717A 22%, #4B515A 44%, #8B929C 64%, #3A4048 76%, rgba(58, 64, 72, 0) 82%),
    radial-gradient(46% 22vh at 50% 100%, rgba(148, 153, 160, 0.32) 0%, rgba(107, 113, 122, 0.12) 38%, rgba(107, 113, 122, 0) 70%),
    radial-gradient(56% 28vh at 50% 100%, rgba(71, 76, 84, 0.14) 0%, rgba(71, 76, 84, 0) 76%);
  backface-visibility: hidden;
  transform: translate3d(0, 0, 0);
  animation: hero-rise 1.15s cubic-bezier(.16, 1, .3, 1) both;
}
.hero::after {
  inset: 0;
  z-index: -1;
  background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.14'/></svg>");
  background-size: 120px 120px;
  mix-blend-mode: overlay;
}
@keyframes hero-rise {
  from { transform: translate3d(0, 26vh, 0); }
  to { transform: translate3d(0, 0, 0); }
}
.hero h1 {
  grid-row: 2;
  margin: 0;
  max-width: 32ch;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(32px, 3.3vw, 52px);
  line-height: 1.03;
  letter-spacing: -0.025em;
}

main { max-width: 1248px; margin: 0 auto; padding: 0 40px 80px; }
section { padding: 88px 0; border-bottom: 1px solid var(--border); }
section:last-child { border-bottom: 0; }
.kicker { margin: 0 0 20px; color: var(--text-muted); font-family: var(--font-mono); font-size: 11px; font-weight: 400; letter-spacing: .06em; }
h2, .lead { margin: 0; max-width: 24ch; font-size: clamp(28px, 3vw, 42px); line-height: 1.15; font-weight: 500; letter-spacing: -.035em; }
.body-copy { max-width: 48ch; margin: 24px 0 0; color: var(--text-secondary); font-size: 16px; line-height: 1.7; }
.problem { display: grid; grid-template-columns: 1fr 2fr; gap: 48px; }
.problem > .kicker { padding-top: 8px; max-width: 22ch; }
.how { padding-bottom: 56px; }
.how h2 { max-width: 30ch; }
.stepper { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: 28px 0 0; padding: 0; list-style: none; font-family: var(--font-mono); font-size: 12px; color: var(--text-secondary); }
.stepper li { display: flex; align-items: center; gap: 24px; }
.stepper li:not(:last-child)::after { content: "→"; color: var(--text-muted); }
.concepts { padding: 0; }
.product-row { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.3fr); align-items: center; gap: 80px; padding: 96px 0; border-bottom: 1px solid var(--border); }
.product-row:last-child { border-bottom: 0; }
.product-row.reverse { grid-template-columns: minmax(0, 1.3fr) minmax(0, .85fr); }
.product-row.reverse .story { order: 2; }
h3 { margin: 0; font-size: clamp(28px, 2.7vw, 38px); font-weight: 500; line-height: 1.13; letter-spacing: -.035em; }
.concept { height: 300px; margin-top: 24px; background: radial-gradient(ellipse at 50% 68%, #e2e5e8, transparent 64%); }
.concept canvas { width: 100%; height: 100%; display: block; }
figure { margin: 0; }
.app-preview, .report-preview { background: #fff; border: 1px solid #d3d7dc; box-shadow: 0 24px 56px -32px #19212d50, 0 4px 12px #19212d08; }
figcaption { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 44px; padding: 12px 18px; border-bottom: 1px solid #d3d7dc; color: #59616c; font: 10px/1.5 var(--font-mono); letter-spacing: .025em; }
.app-preview img { display: block; width: 100%; height: auto; filter: grayscale(1); }
.floor-preview { padding: 24px 0 0 24px; }
.iso-preview { margin-left: -24px; margin-right: 24px; transform: perspective(1500px) rotateY(-3deg); }
.top-preview { position: relative; width: 78%; margin: -16px 0 0 auto; box-shadow: 0 24px 56px -24px #19212d40; }
.report-preview { max-width: 620px; width: 100%; }
.report-body { padding: 32px; }
.report-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 24px; }
.report-heading .kicker { margin: 0; font-size: 10px; }
.chip { border: 1px solid #d3d7dc; padding: 4px 7px; font: 10px/1.4 var(--font-mono); white-space: nowrap; }
h4 { margin: 0; font-size: 28px; font-weight: 500; line-height: 1.2; letter-spacing: -.03em; }
.report-subtitle { margin: 12px 0 28px; color: #68717d; font-size: 13px; }
.report-subtitle span { margin: 0 8px; color: #9ba1aa; }
.report-metrics { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid #d3d7dc; background: var(--surface-app); }
.report-metrics > div { padding: 20px; }
.report-metrics > div + div { border-left: 1px solid #d3d7dc; }
.report-metrics span { display: block; font: 10px var(--font-mono); color: #68717d; }
.report-metrics strong { display: block; margin-top: 12px; font-size: 30px; font-weight: 400; letter-spacing: -.04em; }
.report-metrics small { font-size: 13px; letter-spacing: 0; color: #68717d; }
.report-fields { margin: 24px 0; font-size: 12px; }
.report-fields > div { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid #e6e8eb; }
.report-fields dt { color: #68717d; flex-shrink: 0; }
.report-fields dd { margin: 0; text-align: right; overflow-wrap: anywhere; font-family: var(--font-mono); font-size: 11px; }
.report-note, .report-block { padding: 20px; background: var(--surface-app); border-left: 2px solid #000; }
.report-note .kicker, .report-block .kicker { display: block; font-size: 10px; margin-bottom: 10px; }
.report-note p, .report-block p { margin: 0; font-size: 14px; line-height: 1.6; }
.preview-foot { padding: 14px 20px; border-top: 1px solid #d3d7dc; font: 10px/1.6 var(--font-mono); color: #68717d; }
.citation-stack > .kicker { display: block; margin: 0 0 8px; }
.citation-stack > div { display: flex; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid #e6e8eb; font-size: 13px; }
.citation-stack > div span { font: 10px var(--font-mono); color: #68717d; }
.citation-stack > div span:last-child { margin-left: auto; }
.close { text-align: center; }
.close .lead, .close .body-copy { margin-left: auto; margin-right: auto; }
.close .btn { margin-top: 32px; }
@media (max-width: 900px) {
  .product-row, .product-row.reverse { gap: 32px; }
  .report-body { padding: 24px; }
}
@media (max-width: 700px) {
  .hero { gap: 28px; padding: 40px 20px; }
  .hero h1 { max-width: 28ch; font-size: 32px; }
  main { padding: 0 20px 48px; }
  section { padding: 56px 0; }
  .problem, .product-row, .product-row.reverse { grid-template-columns: 1fr; gap: 24px; }
  .problem > .kicker { max-width: none; margin: 0; }
  .product-row { padding: 56px 0; }
  .product-row.reverse .story { order: 0; }
  .concept { height: 260px; max-width: 360px; margin: 12px auto 0; }
  .floor-preview { padding-top: 0; }
  .report-body { padding: 20px; }
  .report-metrics > div { padding: 16px; }
  .report-metrics strong { font-size: 26px; }
  .stepper, .stepper li { gap: 12px; }
  figcaption { padding: 12px; font-size: 9px; }
}
@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}

.scroll-diagnostic { display: block; min-height: 180vh; padding: 0; }
.diagnostic-stage { position: sticky; top: 80px; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .85fr); align-items: center; gap: 80px; min-height: calc(100vh - 104px); padding: 24px 0; }
.diagnostic-stage .concept { height: clamp(260px, 36vh, 380px); }
.fault-indicator { color: #c62828; }
.fault-indicator::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; background: currentColor; }
@media (max-width: 900px) { .diagnostic-stage { gap: 32px; } }
@media (max-width: 700px), (max-height: 740px) {
  .scroll-diagnostic { min-height: 0; padding: 56px 0; }
  .diagnostic-stage { position: static; min-height: 0; }
}
@media (max-width: 700px) {
  .diagnostic-stage { grid-template-columns: 1fr; gap: 24px; }
  .diagnostic-stage .concept { height: 280px; }
}
@media (prefers-reduced-motion: reduce) {
  .scroll-diagnostic { min-height: 0; padding: 56px 0; }
  .diagnostic-stage { position: static; min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero::before { animation: none; }
}

.line-view { height: 360px; background: #e9edf1; }
.line-view canvas { display: block; width: 100%; height: 100%; pointer-events: none; }
.line-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; border-top: 1px solid var(--border); }
.line-legend { display: flex; gap: 12px; font: 10px var(--font-mono); }
.line-legend .running::before, .line-legend .flagged::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 5px; background: #38a568; }
.line-legend .flagged::before { background: #d12e36; }
.line-view.unavailable { background: url('/landing/images/floor-iso.jpg') center / cover; }
.line-view.unavailable canvas { visibility: hidden; }
@media (max-width: 700px) { .line-view { height: 280px; } }

.hero-brand { display: flex; align-items: center; gap: 12px; margin: 0; font: 500 24px/1.2 var(--font-sans); letter-spacing: -.04em; }
.hero-mark { width: 40px; height: 40px; }
@media (max-width: 700px) { .hero-brand { font-size: 22px; } .hero-mark { width: 32px; height: 32px; } }

.hero .hero-brand { grid-row: 1; align-self: end; }
.hero > .btn { grid-row: 3; align-self: start; min-height: 48px; padding: 0 28px; font-size: 14px; }
@property --carbon-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}
.demo-now { position: relative; }
.demo-now::after {
  content: "";
  position: absolute;
  inset: -5px;
  padding: 2px;
  border-radius: inherit;
  pointer-events: none;
  background: conic-gradient(from var(--carbon-angle), #25252538 0%, #25252538 65%, #252525cc 85%, #25252538 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  animation: carbon-orbit 7s linear infinite;
}
@keyframes carbon-orbit {
  to { --carbon-angle: 360deg; }
}
.hero-more {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 1;
  display: flex;
  color: #F7F8FA;
  opacity: .55;
  transform: translate3d(-50%, 0, 0);
  animation: hero-more-nudge 1.8s ease-in-out infinite alternate;
}
.hero-more:hover, .hero-more:focus-visible { opacity: .75; }
@keyframes hero-more-nudge {
  from { transform: translate3d(-50%, 0, 0); }
  to { transform: translate3d(-50%, 6px, 0); }
}
@media (prefers-reduced-motion: reduce) {
  .demo-now::after { animation: none; }
  .hero-more { animation: none; }
}

.landing-disclosure { position: absolute; top: 12px; left: 12px; right: 12px; z-index: 2; text-align: center; font: 11px var(--font-sans); color: #50555e; }