:root {
  --bg: #080809;
  --bg-alt: #0f0f12;
  --fg: #f0ece4;
  --fg-muted: #9a958a;
  --accent: #ff4d00;
  --accent-dim: rgba(255, 77, 0, 0.12);
  --border: rgba(240, 236, 228, 0.07);
}

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

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

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 24px 48px;
  border-bottom: 1px solid var(--border);
  background: rgba(8, 8, 9, 0.8);
  backdrop-filter: blur(12px);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}
.wordmark {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--fg);
}
.tagline {
  font-size: 12px;
  color: var(--fg-muted);
  font-weight: 400;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 160px 48px 120px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(ellipse at center, rgba(255, 77, 0, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  max-width: 860px;
  position: relative;
}
.eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}
.hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(52px, 7vw, 96px);
  line-height: 1.0;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 28px;
}
.lede {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 72px;
}
.metrics-row {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}
.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.metric .num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 36px;
  color: var(--accent);
  letter-spacing: -1px;
}
.metric .label {
  font-size: 12px;
  color: var(--fg-muted);
  max-width: 140px;
  line-height: 1.4;
}

/* HOW */
.how {
  padding: 120px 48px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how-inner { max-width: 1100px; margin: 0 auto; }
.how h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 42px;
  letter-spacing: -1px;
  margin-bottom: 64px;
  color: var(--fg);
}
.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
}
.step {
  padding: 48px;
  background: var(--bg);
  border: 1px solid var(--border);
}
.step-num {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  display: block;
  margin-bottom: 20px;
}
.step h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--fg);
  margin-bottom: 14px;
}
.step p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* STACKS */
.stacks {
  padding: 120px 48px;
}
.stacks-inner { max-width: 1100px; margin: 0 auto; }
.stacks h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 42px;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.stacks-sub {
  font-size: 16px;
  color: var(--fg-muted);
  margin-bottom: 56px;
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}
.stack-card {
  padding: 40px 36px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  transition: border-color 0.2s;
}
.stack-card:hover { border-color: var(--accent); }
.stack-card h3 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 17px;
  color: var(--fg);
  margin-bottom: 14px;
}
.stack-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* CLOSING */
.closing {
  padding: 140px 48px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.closing-inner { max-width: 900px; margin: 0 auto; text-align: center; }
.closing h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(40px, 5vw, 72px);
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 32px;
  line-height: 1.05;
}
.closing p {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* FOOTER */
footer {
  padding: 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-inner .wordmark { color: var(--fg); font-size: 18px; }
.footer-inner p { font-size: 13px; color: var(--fg-muted); }

/* RESPONSIVE */
@media (max-width: 900px) {
  nav, .hero, .how, .stacks, .closing, footer { padding-left: 24px; padding-right: 24px; }
  .steps { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-row { gap: 32px; }
}
@media (max-width: 600px) {
  .stack-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 44px; }
  .metrics-row { flex-direction: column; gap: 24px; }
}