:root {
  color-scheme: light;
  --ink: #14211f;
  --muted: #5b6763;
  --soft: #f4efe7;
  --cream: #fbf7f0;
  --sage: #cbd8cb;
  --moss: #687f6b;
  --forest: #16352f;
  --gold: #c49a5a;
  --white: #ffffff;
  --line: rgba(20, 33, 31, 0.12);
  --shadow: 0 24px 80px rgba(20, 33, 31, 0.12);
  --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #fbf7f0 0%, #ffffff 45%, #f4efe7 100%);
  line-height: 1.55;
}

a { color: inherit; }
.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: .8rem 1rem;
  background: var(--forest);
  color: var(--white);
  z-index: 10;
}
.skip:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3.5rem);
  backdrop-filter: blur(18px);
  background: rgba(251, 247, 240, .82);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  font-weight: 750;
  letter-spacing: -0.02em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  color: var(--white);
  background: var(--forest);
  font-size: .78rem;
}
nav {
  display: flex;
  align-items: center;
  gap: clamp(.7rem, 2vw, 1.5rem);
  font-size: .92rem;
}
nav a { text-decoration: none; color: var(--muted); }
.nav-cta {
  color: var(--white) !important;
  background: var(--forest);
  border-radius: 999px;
  padding: .72rem 1rem;
}

.section {
  padding: clamp(4.5rem, 8vw, 8rem) clamp(1.25rem, 5vw, 5rem);
  max-width: 1280px;
  margin: 0 auto;
}
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  min-height: 84vh;
}
.eyebrow, .section-label {
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--moss);
  font-size: .78rem;
  font-weight: 800;
  margin: 0 0 1rem;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  font-size: clamp(3.2rem, 8vw, 7.4rem);
  line-height: .88;
  letter-spacing: -.075em;
  margin-bottom: 1.4rem;
}
h2 {
  font-size: clamp(2rem, 4.5vw, 4.3rem);
  line-height: .95;
  letter-spacing: -.06em;
  margin-bottom: 1.1rem;
}
h3 {
  font-size: 1.2rem;
  line-height: 1.1;
  letter-spacing: -.03em;
  margin-bottom: .6rem;
}
.lead {
  font-size: clamp(1.18rem, 2vw, 1.55rem);
  color: var(--muted);
  max-width: 760px;
}
.microcopy { color: var(--moss); font-weight: 700; margin-top: 1rem; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin: 2rem 0 0;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: .85rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(20,33,31,.12); }
.button.primary { background: var(--forest); color: var(--white); }
.button.secondary { background: rgba(255,255,255,.7); border-color: var(--line); color: var(--forest); }
.button.large { min-height: 3.5rem; padding: 1rem 1.4rem; }

.hero-card {
  position: relative;
  padding: clamp(1.2rem, 3vw, 2rem);
  border-radius: 36px;
  background: radial-gradient(circle at top left, rgba(203,216,203,.75), transparent 45%), var(--white);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.9);
}
.system-map {
  display: grid;
  gap: .8rem;
}
.node {
  padding: 1.1rem 1.2rem;
  border-radius: 20px;
  background: var(--cream);
  border: 1px solid var(--line);
  font-weight: 800;
}
.node.human { background: #e9efe9; }
.node.ai { background: #f4e6cc; }
.node.outcome { background: var(--forest); color: var(--white); }
.arrow { color: var(--gold); font-size: 1.4rem; padding-left: 1rem; }
.quote-card {
  margin-top: 1.2rem;
  padding: 1.2rem;
  border-radius: 24px;
  background: var(--forest);
  color: var(--white);
  font-size: 1.25rem;
  font-weight: 750;
}
.quote-card p { margin: 0; }

.two-column {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.stack p { font-size: 1.08rem; color: var(--muted); }
.problem { border-top: 1px solid var(--line); }
.callout {
  padding: clamp(2rem, 5vw, 4.5rem);
  border-radius: 38px;
  background: var(--forest);
  color: var(--white);
  box-shadow: var(--shadow);
}
.callout .eyebrow { color: #e8cf9a; }
.callout p:not(.eyebrow) { color: rgba(255,255,255,.78); font-size: 1.18rem; max-width: 880px; }
.section-intro { max-width: 850px; margin-bottom: 2rem; }
.section-intro.narrow { max-width: 720px; margin-left: auto; margin-right: auto; text-align: center; }
.cards { display: grid; gap: 1rem; }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.72);
  box-shadow: 0 14px 44px rgba(20,33,31,.06);
}
.card p, .card li { color: var(--muted); }
.card-number {
  display: inline-flex;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--soft);
  color: var(--moss);
  font-weight: 900;
  margin-bottom: 1.2rem;
}
.card.light { background: var(--white); }
.card.dark { background: var(--forest); color: var(--white); }
.card.dark li { color: rgba(255,255,255,.78); }
ul { padding-left: 1.15rem; }
li + li { margin-top: .65rem; }

.method { background: rgba(203,216,203,.18); max-width: none; }
.method > * { max-width: 1180px; margin-left: auto; margin-right: auto; }
.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .85rem;
}
.step {
  position: relative;
  padding: 1.2rem;
  border-radius: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}
.step span {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--forest);
  color: var(--white);
  font-weight: 900;
  margin-bottom: 1rem;
}
.step p { color: var(--muted); }
.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}
.use-case-grid > div {
  padding: 1.3rem;
  border-radius: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}
.use-case-grid p { color: var(--muted); }
.answer-block {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
  padding-top: 3rem;
  padding-bottom: 3rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.answer-block > p {
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  line-height: 1.35;
  color: var(--forest);
  font-weight: 700;
}
.faq-list {
  display: grid;
  gap: .85rem;
  max-width: 900px;
  margin: 0 auto;
}
details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.1rem 1.2rem;
}
summary {
  cursor: pointer;
  font-weight: 850;
  font-size: 1.05rem;
}
details p { margin: .8rem 0 0; color: var(--muted); }
.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  background: var(--forest);
  color: var(--white);
  border-radius: 38px;
  margin-bottom: 5rem;
}
.final-cta .eyebrow { color: #e8cf9a; }
.final-cta p:not(.eyebrow) { color: rgba(255,255,255,.78); max-width: 740px; }
.final-cta .button { background: var(--white); color: var(--forest); }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1.25rem, 5vw, 5rem);
  color: var(--muted);
  border-top: 1px solid var(--line);
}
.site-footer a { text-decoration: none; font-weight: 800; color: var(--forest); }

@media (max-width: 980px) {
  nav a:not(.nav-cta) { display: none; }
  .hero, .two-column, .answer-block, .final-cta { grid-template-columns: 1fr; }
  .cards.four, .steps, .use-case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero { min-height: auto; padding-top: 4rem; }
}
@media (max-width: 640px) {
  .site-header { align-items: flex-start; }
  .brand span:last-child { display: none; }
  .nav-cta { padding: .65rem .82rem; font-size: .85rem; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .cards.four, .cards.two, .steps, .use-case-grid { grid-template-columns: 1fr; }
  .section { padding-left: 1rem; padding-right: 1rem; }
  h1 { font-size: clamp(3rem, 18vw, 4.4rem); }
  .final-cta { border-radius: 26px; margin-left: 1rem; margin-right: 1rem; }
  .site-footer { flex-direction: column; }
}