:root {
  --paper: #f6f0e6;
  --paper-deep: #ede3d4;
  --ink: #182433;
  --ink-soft: #5f6871;
  --accent: #9a4e2a;
  --accent-light: #d99168;
  --line: #d8cbbb;
  --night: #172433;
  --night-soft: #213447;
  --white: #fffdf8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

button, input { font: inherit; }
a { color: inherit; }

.paper-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .16;
  background-image: radial-gradient(#735f4d 0.45px, transparent 0.45px);
  background-size: 5px 5px;
  mix-blend-mode: multiply;
  z-index: 20;
}

.site-nav {
  width: min(100% - 40px, 1180px);
  margin: 0 auto;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  font-size: .76rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--ink); border-radius: 50%; font-family: Georgia, serif; }
.nav-status { display: flex; align-items: center; gap: 8px; color: var(--ink-soft); }
.nav-status i { width: 7px; height: 7px; border-radius: 50%; background: #3e956d; box-shadow: 0 0 0 4px rgba(62,149,109,.12); }

main { overflow: hidden; }

.hero, .comparison, .workflow, .evidence {
  width: min(100% - 40px, 1180px);
  margin: 0 auto;
}

.hero {
  min-height: 700px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, .65fr);
  gap: 80px;
  align-items: center;
  padding: 82px 0 110px;
}

.eyebrow { margin: 0 0 24px; color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
.eyebrow.light { color: var(--accent-light); }

.hero h1 {
  margin: 0;
  font-family: Georgia, "Songti SC", serif;
  font-size: clamp(4.8rem, 10vw, 9.5rem);
  line-height: .76;
  letter-spacing: -.065em;
  font-weight: 400;
}

.hero h1 em { color: var(--accent); font-size: .54em; letter-spacing: -.03em; }
.hero-lede { max-width: 660px; margin: 48px 0 0; font-size: clamp(1.15rem, 2vw, 1.55rem); line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 42px; }
.primary-link { display: inline-flex; gap: 28px; align-items: center; padding: 13px 18px; background: var(--ink); color: var(--white); text-decoration: none; font-size: .9rem; }
.privacy-note { color: var(--ink-soft); font-size: .8rem; }

.hero-proof { position: relative; padding: 30px; background: var(--white); border: 1px solid var(--line); box-shadow: 16px 16px 0 var(--paper-deep); transform: rotate(1.5deg); }
.proof-label { margin: 0; font-size: .68rem; letter-spacing: .13em; color: var(--accent); }
.hero-proof > strong { display: block; margin: 8px 0 28px; font-family: Georgia, serif; font-size: 2.1rem; font-weight: 400; }
.hero-proof dl { margin: 0; }
.hero-proof dl div { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-top: 1px solid var(--line); }
.hero-proof dt { color: var(--ink-soft); }
.hero-proof dd { margin: 0; text-align: right; font-weight: 700; }
.stamp { width: 120px; margin: 30px 0 0 auto; padding: 10px; border: 2px solid var(--accent); color: var(--accent); font-size: .68rem; line-height: 1.25; text-align: center; letter-spacing: .1em; transform: rotate(-6deg); }

.section-number { color: var(--accent); font: 400 4rem/1 Georgia, serif; }
.section-number.light { color: var(--accent-light); }
.section-intro h2, .demo-heading h2, .boundary-copy h2, .evidence h2 { margin: 0; font-family: Georgia, "Songti SC", serif; font-size: clamp(2.35rem, 5vw, 4.6rem); line-height: 1.08; font-weight: 400; }

.comparison { display: grid; grid-template-columns: 90px .75fr 1.25fr; gap: 40px; padding: 110px 0; border-top: 1px solid var(--line); }
.comparison-grid { display: grid; grid-template-columns: 1fr 42px 1fr; align-items: center; gap: 18px; }
.comparison-grid article { min-height: 230px; padding: 28px; border: 1px solid var(--line); background: rgba(255,253,248,.55); }
.comparison-grid h3 { margin: 28px 0 12px; font-size: 1.3rem; }
.comparison-grid p { margin: 0; color: var(--ink-soft); }
.comparison-tag { padding: 4px 8px; background: var(--accent); color: white; font-size: .68rem; letter-spacing: .1em; }
.comparison-tag.muted { background: var(--ink-soft); }
.comparison-arrow { font-size: 2rem; color: var(--accent); text-align: center; }

.demo-section, .boundaries { background: var(--night); color: var(--white); padding: 110px max(20px, calc((100vw - 1180px) / 2)); }
.demo-section { display: grid; grid-template-columns: 90px 1fr; gap: 40px; }
.demo-heading { grid-column: 2; display: flex; justify-content: space-between; gap: 60px; align-items: end; }
.demo-disclosure { max-width: 320px; color: #b9c4cc; }
.demo-disclosure span { display: inline-block; padding: 5px 9px; border: 1px solid var(--accent-light); color: var(--accent-light); font-size: .7rem; letter-spacing: .1em; }
.demo-panel { grid-column: 2; display: grid; grid-template-columns: .85fr 1.15fr; margin-top: 56px; border: 1px solid #385064; }
.input-block, .run-output { padding: 30px; }
.input-block { background: var(--night-soft); border-right: 1px solid #385064; }
.input-label-row, .output-kicker { display: flex; justify-content: space-between; gap: 20px; align-items: center; font-size: .66rem; letter-spacing: .1em; color: #95a8b6; }
.input-label-row p { margin: 0; }
.creator-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 24px 0; }
.creator-grid label { display: flex; align-items: center; gap: 8px; border: 1px solid #496075; padding: 9px 11px; background: #1a2b3b; }
.creator-grid label span { color: var(--accent-light); font: .72rem Georgia, serif; }
.creator-grid input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--white); }
.creator-grid label:focus-within { border-color: var(--accent-light); box-shadow: 0 0 0 2px rgba(217,145,104,.18); }
#demo-run-button { width: 100%; display: flex; justify-content: space-between; align-items: center; border: 0; padding: 14px 16px; background: var(--accent); color: white; cursor: pointer; }
#demo-run-button:hover { background: #ae5b33; }
#demo-run-button:focus-visible { outline: 3px solid var(--accent-light); outline-offset: 3px; }
#demo-run-button:disabled { opacity: .55; cursor: wait; }
.output-kicker i { width: 8px; height: 8px; border-radius: 50%; background: #51c28b; }
#demo-status { min-height: 52px; margin: 20px 0 24px; color: #b9c4cc; }
.status-warning { color: #f0aa7e !important; }
.status-ready { color: #78d7a8 !important; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.result-card { overflow: hidden; background: var(--paper); color: var(--ink); }
.result-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; object-position: top; }
.result-card-body { padding: 14px; }
.result-meta { display: flex; justify-content: space-between; gap: 12px; color: var(--accent); font-size: .72rem; font-weight: 800; }
.result-card h3 { margin: 10px 0 18px; font-size: .98rem; line-height: 1.45; }
.result-card a { font-size: .72rem; color: var(--ink-soft); text-underline-offset: 3px; }

.workflow { display: grid; grid-template-columns: 90px .7fr 1.3fr; gap: 40px; padding: 120px 0; }
.workflow-list { margin: 0; padding: 0; list-style: none; }
.workflow-list li { display: grid; grid-template-columns: 55px 1fr; gap: 20px; padding: 22px 0; border-top: 1px solid var(--line); }
.workflow-list li:last-child { border-bottom: 1px solid var(--line); }
.workflow-list li > span { color: var(--accent); font: 1.1rem Georgia, serif; }
.workflow-list h3 { margin: 0 0 6px; font-size: 1.15rem; }
.workflow-list p { margin: 0; color: var(--ink-soft); }

.boundaries { display: grid; grid-template-columns: 90px .75fr 1.25fr; gap: 40px; }
.boundary-copy > p:last-child { color: #b9c4cc; max-width: 520px; }
.boundary-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid #385064; }
.boundary-grid article { padding: 28px; }
.boundary-grid article + article { border-left: 1px solid #385064; }
.boundary-label { font-size: .7rem; letter-spacing: .12em; }
.boundary-label.yes { color: #78d7a8; }
.boundary-label.no { color: #f0aa7e; }
.boundary-grid ul { margin: 24px 0 0; padding: 0; list-style: none; }
.boundary-grid li { padding: 12px 0; border-top: 1px solid #385064; color: #d9e2e8; }

.evidence { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding: 110px 0; }
.evidence-notes { border-top: 1px solid var(--line); }
.evidence-notes p { margin: 0; padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.evidence-notes b { color: var(--ink); }

footer { display: flex; justify-content: space-between; gap: 30px; padding: 28px max(20px, calc((100vw - 1180px) / 2)); background: #111b27; color: #9eabb5; font-size: .75rem; letter-spacing: .05em; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 50px; }
  .hero-proof { max-width: 480px; }
  .comparison, .workflow, .boundaries { grid-template-columns: 70px 1fr; }
  .comparison-grid, .workflow-list, .boundary-grid { grid-column: 2; }
  .demo-section { grid-template-columns: 70px 1fr; }
  .demo-panel { grid-template-columns: 1fr; }
  .input-block { border-right: 0; border-bottom: 1px solid #385064; }
  .boundaries { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 640px) {
  .site-nav { width: min(100% - 28px, 1180px); height: 62px; }
  .brand span:last-child { display: none; }
  .hero, .comparison, .workflow, .evidence { width: min(100% - 28px, 1180px); }
  .hero { min-height: auto; padding: 64px 0 88px; }
  .hero h1 { font-size: clamp(4.2rem, 22vw, 6rem); }
  .hero-lede { margin-top: 36px; }
  .comparison, .workflow, .boundaries, .demo-section { display: block; padding-top: 78px; padding-bottom: 78px; }
  .section-number { margin-bottom: 32px; font-size: 2.8rem; }
  .comparison-grid { grid-template-columns: 1fr; margin-top: 42px; }
  .comparison-arrow { transform: rotate(90deg); }
  .demo-heading { display: block; }
  .demo-disclosure { margin-top: 28px; }
  .demo-panel { margin-top: 36px; }
  .creator-grid, .result-grid, .boundary-grid, .evidence { grid-template-columns: 1fr; }
  .boundary-grid article + article { border-left: 0; border-top: 1px solid #385064; }
  .workflow-list { margin-top: 42px; }
  .evidence { gap: 42px; }
  footer { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}