/* Base */
:root {
  --bg: #0F1629;
  --fg: #E2E8F0;
  --muted: #64748B;
  --accent: #F59E0B;
  --accent-dim: rgba(245, 158, 11, 0.12);
  --surface: #1A2438;
  --border: rgba(226, 232, 240, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.nav-logo {
  font-family: 'Instrument Serif', serif;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--fg);
}

/* Hero */
.hero {
  padding: 96px 0 80px;
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-headline {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 28px;
  max-width: 700px;
}
.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 56px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-value {
  font-family: 'Instrument Serif', serif;
  font-size: 36px;
  color: var(--fg);
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.01em;
}
.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* Section shared */
.section-title {
  font-family: 'Instrument Serif', serif;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 48px;
}

/* How it works */
.hiw { padding: 80px 0; background: var(--surface); }
.hiw-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.hiw-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.hiw-step { position: relative; }
.step-num {
  font-family: 'Instrument Serif', serif;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
  display: block;
}
.hiw-step h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.hiw-step p { font-size: 15px; color: var(--muted); line-height: 1.6; }

/* Sample findings */
.sample { padding: 80px 0; }
.sample-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.sample-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sample-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}
.card-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 18px;
}
.sample-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
}
.sample-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* Principles */
.principles { padding: 80px 0; background: var(--surface); }
.principles-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.principles-quote {
  border-left: 3px solid var(--accent);
  padding-left: 32px;
  margin-bottom: 56px;
}
.principles-quote blockquote {
  font-family: 'Instrument Serif', serif;
  font-size: 22px;
  font-style: italic;
  line-height: 1.5;
  color: var(--fg);
  margin-bottom: 16px;
}
.principles-quote cite {
  font-size: 14px;
  color: var(--muted);
  font-style: normal;
}
.principles-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: 56px;
}
.principles-text { max-width: 640px; }
.principles-text h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 28px;
  font-weight: 400;
  color: var(--fg);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.principles-text p { font-size: 16px; color: var(--muted); line-height: 1.7; }

/* Closing */
.closing { padding: 96px 0; }
.closing-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; }
.closing h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 40px;
  font-weight: 400;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
  max-width: 600px;
}
.closing p {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.7;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand { max-width: 320px; }
.footer-logo {
  font-family: 'Instrument Serif', serif;
  font-size: 18px;
  color: var(--fg);
  display: block;
  margin-bottom: 10px;
}
.footer-brand p { font-size: 14px; color: var(--muted); line-height: 1.5; }
.footer-links { font-size: 13px; color: var(--muted); align-self: center; }

/* Mobile */
@media (max-width: 768px) {
  .hero { padding: 64px 0 56px; }
  .hero-headline { font-size: 36px; }
  .hero-stats { flex-direction: column; align-items: flex-start; gap: 24px; }
  .stat-divider { display: none; }
  .hiw-steps { grid-template-columns: 1fr; gap: 40px; }
  .sample-grid { grid-template-columns: 1fr; gap: 16px; }
  .principles-quote { padding-left: 20px; }
  .closing h2 { font-size: 28px; }
  .footer-inner { flex-direction: column; gap: 24px; }
}