:root {
  --bg: #faf8f5;
  --surface: #ffffff;
  --fg: #1a1814;
  --fg-muted: #6b6359;
  --accent: #f05a22;
  --accent-dark: #c9441a;
  --border: #e5e0d8;
  --mono-bg: #f0ece4;
}

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

html { scroll-behavior: smooth; }

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

/* — Navigation — */
.nav {
  padding: 1.25rem 2.5rem;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--fg);
}
.nav-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--fg-muted);
  background: var(--mono-bg);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
}
.nav-cta {
  margin-left: auto;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}
.nav-cta:hover { color: var(--accent-dark); }

/* — Hero — */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  padding: 5rem 2.5rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: start;
}
.hero-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}
.hero-headline {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 2.5rem;
}
.hero-spec {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.spec-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.spec-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.spec-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
}
.spec-unit {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--fg-muted);
}

/* — Content Samples — */
.hero-right {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.content-sample { }
.content-sample.secondary { opacity: 0.75; }
.sample-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}
.sample-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}
.sample-platform {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}
.sample-body {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--fg);
  margin-bottom: 0.75rem;
}
.sample-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg-muted);
  background: var(--mono-bg);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
}
.sample-note {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  color: var(--fg-muted);
  margin-top: 0.5rem;
  border-top: 1px solid var(--border);
  padding-top: 0.5rem;
}

/* — Deliverables — */
.deliverables {
  background: var(--fg);
  color: #fff;
  padding: 5rem 2.5rem;
}
.section-header {
  max-width: 640px;
  margin: 0 auto 3.5rem;
  text-align: center;
}
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.section-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
}
.deliverables-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  max-width: 960px;
  margin: 0 auto;
  background: rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
}
.deliverable {
  background: rgba(255,255,255,0.03);
  padding: 2.5rem;
}
.deliverable-icon {
  width: 40px;
  height: 40px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: #fff;
}
.deliverable h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}
.deliverable p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.65;
}

/* — Mechanics — */
.mechanics {
  padding: 5rem 2.5rem;
  background: var(--surface);
}
.mechanics-inner {
  max-width: 760px;
  margin: 0 auto;
}
.mechanics-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}
.mechanics-headline {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3.5rem;
  line-height: 1.2;
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.step {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }
.step-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--fg-muted);
  padding-top: 0.25rem;
  font-weight: 500;
}
.step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}
.step p {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* — Proof — */
.proof {
  padding: 5rem 2.5rem;
  background: var(--mono-bg);
}
.proof-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0;
}
.proof-stat {
  flex: 1;
  text-align: center;
  padding: 0 2rem;
}
.proof-number {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.proof-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
  display: block;
}
.proof-divider {
  width: 1px;
  height: 80px;
  background: var(--border);
  flex-shrink: 0;
}

/* — Closing — */
.closing {
  padding: 6rem 2.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}
.closing-quote {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.45;
  color: var(--fg);
  margin-bottom: 1rem;
}
.closing-attribution {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2.5rem;
}
.closing-statement {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  border-left: 3px solid var(--accent);
  padding-left: 1.5rem;
}

/* — Footer — */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.footer-logo {
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: -0.02em;
}
.footer-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--fg-muted);
}

/* — Mobile — */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 3rem 1.5rem;
  }
  .hero-right { order: -1; }
  .deliverables { padding: 3rem 1.5rem; }
  .deliverables-grid { grid-template-columns: 1fr; }
  .mechanics { padding: 3rem 1.5rem; }
  .proof { padding: 3rem 1.5rem; }
  .proof-inner { flex-direction: column; gap: 2rem; }
  .proof-divider { display: none; }
  .proof-stat { padding: 0; }
  .closing { padding: 3rem 1.5rem; }
  .step { grid-template-columns: 2.5rem 1fr; gap: 1rem; }
}