@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=DM+Mono:wght@400;500&display=swap');

:root {
  --bg: #0a0a0b;
  --bg-elevated: #111113;
  --bg-card: #18181b;
  --fg: #fafafa;
  --fg-muted: #a1a1aa;
  --fg-dim: #71717a;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --mint: #34d399;
  --amber: #fbbf24;
  --red-soft: #f87171;
  --border: #27272a;
  --radius: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== NAV ===== */
.nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--fg);
}

.logo-dot {
  color: var(--accent);
}

.nav-tag {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--fg-dim);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 100px;
}

/* ===== HERO ===== */
.hero {
  padding: 120px 0 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.75rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--fg);
  max-width: 800px;
  margin-bottom: 28px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), var(--mint));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.7;
}

/* ===== METRICS STRIP ===== */
.metrics {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.metric {
  text-align: center;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--fg);
}

.metric-value .highlight {
  color: var(--mint);
}

.metric-label {
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-top: 4px;
  font-family: 'DM Mono', monospace;
}

/* ===== HOW IT WORKS ===== */
.how {
  padding: 100px 0;
}

.section-label {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 60px;
  max-width: 600px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: border-color 0.3s;
}

.step:hover {
  border-color: var(--accent);
}

.step-number {
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  color: var(--fg-dim);
  margin-bottom: 20px;
  display: block;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.step p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== DIFFERENCE ===== */
.difference {
  padding: 80px 0 100px;
  border-top: 1px solid var(--border);
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.diff-col h3 {
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.diff-col.old h3 {
  color: var(--red-soft);
}

.diff-col.new h3 {
  color: var(--mint);
}

.diff-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.diff-col li {
  font-size: 0.95rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.diff-col.old li::before {
  content: '\2013';
  position: absolute;
  left: 0;
  color: var(--red-soft);
}

.diff-col.new li::before {
  content: '+';
  position: absolute;
  left: 0;
  color: var(--mint);
  font-weight: 600;
}

/* ===== CLOSING ===== */
.closing {
  padding: 100px 0 80px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.closing h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

.footer-right {
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--fg-dim);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 80px 0 60px; }
  .metrics-grid { grid-template-columns: 1fr; gap: 32px; }
  .steps { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}