:root {
  --bg: #FAF7F2;
  --fg: #0F1A14;
  --accent: #1B4332;
  --accent-mid: #2D6A4F;
  --accent-warm: #B8600A;
  --muted: #7A8F7D;
  --border: #D4C9B8;
  --cream-dark: #EDE8DF;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 48px;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: 'Playfair Display', serif;
  font-weight: 900;
  font-size: 22px;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.nav-tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-warm);
  display: inline-block;
}

/* Hero */
.hero {
  padding: 80px 48px 72px;
  background: var(--bg);
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-warm);
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-headline {
  font-family: 'Playfair Display', serif;
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 900;
  line-height: 1.1;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-lede {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 480px;
}

/* Evidence chain visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.evidence-chain {
  width: 100%;
}
.chain-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  margin-bottom: 20px;
  font-weight: 600;
}
.chain-blocks {
  display: flex;
  align-items: center;
  gap: 0;
}
.chain-block {
  background: var(--accent);
  color: #fff;
  padding: 14px 16px;
  border-radius: 4px;
  flex: 1;
  min-width: 0;
}
.chain-block-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
}
.chain-block-meta {
  display: block;
  font-size: 10px;
  opacity: 0.7;
  line-height: 1.3;
}
.chain-block--1 { background: #1B4332; }
.chain-block--2 { background: #2D6A4F; }
.chain-block--3 { background: #3D7D63; }
.chain-block--4 { background: var(--accent-warm); }

.chain-connector {
  width: 20px;
  height: 2px;
  background: var(--border);
  flex-shrink: 0;
  margin: 0 -1px;
  align-self: center;
}
.chain-timeline {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  padding: 0 2px;
}
.chain-tick {
  display: inline-block;
  width: 2px;
  height: 8px;
  background: var(--border);
  border-radius: 1px;
}
.chain-tick--mid { margin-left: auto; margin-right: auto; }

/* Proof strip */
.proof {
  background: var(--accent);
  color: #fff;
  padding: 48px;
}
.proof-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 48px;
}
.proof-stat {
  flex: 1;
}
.proof-number {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 40px;
  font-weight: 900;
  line-height: 1;
  color: #fff;
  margin-bottom: 8px;
}
.proof-desc {
  font-size: 14px;
  opacity: 0.75;
  line-height: 1.5;
}
.proof-divider {
  width: 1px;
  height: 60px;
  background: rgba(255,255,255,0.2);
  flex-shrink: 0;
}

/* How it works */
.how {
  padding: 96px 48px;
  background: var(--bg);
}
.how-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.how-header {
  max-width: 560px;
  margin-bottom: 64px;
}
.how-title {
  font-family: 'Playfair Display', serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 16px;
}
.how-sub {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.7;
}
.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
}
.how-step {
  padding: 40px 40px 40px 0;
  border-right: 1px solid var(--border);
  padding-right: 40px;
}
.how-step:first-child { padding-left: 0; }
.how-step:last-child { border-right: none; padding-right: 0; }
.step-num {
  font-family: 'Playfair Display', serif;
  font-size: 48px;
  font-weight: 900;
  color: var(--cream-dark);
  line-height: 1;
  margin-bottom: 24px;
}
.step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 12px;
  line-height: 1.3;
}
.step-desc {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
}

/* Features */
.features {
  padding: 96px 48px;
  background: var(--cream-dark);
}
.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.features-title {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 48px;
  line-height: 1.2;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.feature-card {
  background: var(--cream-dark);
  padding: 40px;
}
.feature-icon {
  color: var(--accent);
  margin-bottom: 20px;
}
.feature-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* Closing */
.closing {
  padding: 96px 48px;
  background: var(--accent);
  color: #fff;
}
.closing-inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}
.closing-quote {
  font-family: 'Playfair Display', serif;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 400;
  font-style: italic;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 24px;
}
.closing-sub {
  font-size: 16px;
  opacity: 0.75;
  line-height: 1.7;
}

/* Footer */
.site-footer {
  padding: 40px 48px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-logo {
  font-family: 'Playfair Display', serif;
  font-weight: 900;
  font-size: 18px;
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}
.footer-tagline {
  font-size: 13px;
  color: var(--muted);
}
.footer-meta {
  font-size: 13px;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 768px) {
  .site-nav { padding: 0 24px; }
  .hero { padding: 48px 24px; }
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .chain-blocks { flex-direction: column; gap: 8px; }
  .chain-connector { width: 24px; height: 16px; margin: 0 auto; }
  .proof { padding: 40px 24px; }
  .proof-inner { flex-direction: column; gap: 32px; }
  .proof-divider { width: 40px; height: 1px; }
  .how { padding: 64px 24px; }
  .how-steps { grid-template-columns: 1fr; }
  .how-step { border-right: none; border-bottom: 1px solid var(--border); padding: 32px 0; }
  .how-step:last-child { border-bottom: none; }
  .features { padding: 64px 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .closing { padding: 64px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}