:root {
  --bg: #0a0e17;
  --bg-elevated: #111827;
  --bg-card: #161f33;
  --fg: #e2e8f0;
  --fg-muted: #8194b2;
  --fg-dim: #4a5d7a;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-subtle: rgba(56, 189, 248, 0.08);
  --green: #4ade80;
  --red: #f87171;
  --border: rgba(255,255,255,0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* === NAV === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--fg);
  letter-spacing: -0.02em;
}

/* === HERO === */
.hero {
  padding: 10rem 2rem 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: 780px;
  margin: 0 auto;
  position: relative;
}
.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  border: 1px solid rgba(56, 189, 248, 0.2);
  margin-bottom: 2rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: #fff;
}
.hero-sub {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto 3rem;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* === PROOF === */
.proof {
  padding: 5rem 2rem;
}
.proof-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.2s;
}
.proof-card:hover {
  border-color: rgba(56, 189, 248, 0.25);
}
.proof-icon {
  color: var(--accent);
  font-size: 1.2rem;
  margin-bottom: 1rem;
}
.proof-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #fff;
  letter-spacing: -0.01em;
}
.proof-card p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === HOW === */
.how {
  padding: 5rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.how-inner {
  max-width: 720px;
  margin: 0 auto;
}
.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 3rem;
  text-align: center;
}
.how-steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.how-step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.step-num {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent-subtle);
  border: 1px solid rgba(56, 189, 248, 0.15);
  flex-shrink: 0;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === COMPARISON === */
.comparison {
  padding: 5rem 2rem;
}
.comparison-inner {
  max-width: 800px;
  margin: 0 auto;
}
.comparison h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 3rem;
  text-align: center;
}
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.compare-col {
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--border);
}
.compare-old {
  background: rgba(248, 113, 113, 0.04);
  border-color: rgba(248, 113, 113, 0.15);
}
.compare-new {
  background: var(--accent-subtle);
  border-color: rgba(56, 189, 248, 0.2);
}
.compare-header {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: #fff;
  letter-spacing: -0.01em;
}
.compare-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.compare-col li {
  font-size: 0.9rem;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.compare-x {
  color: var(--red);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.compare-check {
  color: var(--green);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* === CLOSING === */
.closing {
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
}
.closing::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}
.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 1.5rem;
}
.closing-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

/* === FOOTER === */
.footer {
  padding: 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fg-dim);
}
.footer-copy {
  font-size: 0.8rem;
  color: var(--fg-dim);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero { padding: 8rem 1.5rem 4rem; }
  .hero-stats { gap: 1.25rem; }
  .stat-divider { display: none; }
  .proof-inner { grid-template-columns: 1fr; }
  .comparison-grid { grid-template-columns: 1fr; }
  .how-step { flex-direction: column; gap: 0.75rem; }
  .footer-inner { flex-direction: column; gap: 0.75rem; text-align: center; }
  .nav { padding: 1rem 1.5rem; }
}
@media (max-width: 480px) {
  .hero { padding: 7rem 1rem 3rem; }
  .hero-sub { font-size: 1rem; }
  .proof-card, .compare-col { padding: 1.5rem; }
}