:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ec;
  --fg-muted: #8a8a96;
  --fg-dim: #5a5a66;
  --accent: #00e87b;
  --accent-dim: rgba(0, 232, 123, 0.12);
  --accent-glow: rgba(0, 232, 123, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(0, 232, 123, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  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: 20px 40px;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--fg);
}

.logo-icon {
  color: var(--accent);
  margin-right: 2px;
}

.nav-tag {
  font-size: 13px;
  color: var(--fg-muted);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
}

/* Hero */
.hero {
  padding: 160px 40px 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
}

.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 32px;
  border: 1px solid var(--border-accent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--fg);
}

.hero-sub {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-lede {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  align-items: center;
  padding: 32px 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--fg-muted);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* Problem */
.problem {
  padding: 120px 40px;
  border-top: 1px solid var(--border);
}

.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.problem-left h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  position: sticky;
  top: 120px;
}

.problem-right p {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.problem-right p:last-child {
  color: var(--accent);
  font-weight: 500;
}

/* Features */
.features {
  padding: 120px 40px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 16px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  transition: border-color 0.3s;
}

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

.feature-card-large {
  grid-column: span 2;
}

.feature-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* Pricing */
.pricing {
  padding: 120px 40px;
}

.pricing-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
  max-width: 500px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.price-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}

.price-card-featured {
  border-color: var(--accent);
  position: relative;
  background: linear-gradient(180deg, rgba(0, 232, 123, 0.04) 0%, var(--bg-elevated) 40%);
}

.price-tier {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  margin-bottom: 16px;
}

.price-card-featured .price-tier {
  color: var(--accent);
}

.price-amount {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}

.price-amount span {
  font-size: 18px;
  font-weight: 500;
  color: var(--fg-muted);
}

.price-card ul {
  list-style: none;
}

.price-card li {
  font-size: 15px;
  color: var(--fg-muted);
  padding: 10px 0;
  border-top: 1px solid var(--border);
}

.price-card li:last-child {
  padding-bottom: 0;
}

/* Closing */
.closing {
  padding: 140px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.2;
  pointer-events: none;
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.closing p {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.7;
}

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

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}

.footer-text {
  font-size: 13px;
  color: var(--fg-dim);
}

/* Mobile */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .hero { padding: 120px 20px 60px; }
  .hero-stats {
    flex-direction: column;
    gap: 24px;
    padding: 24px;
    text-align: center;
  }
  .stat-divider {
    width: 100%;
    height: 1px;
  }
  .problem { padding: 80px 20px; }
  .problem-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .problem-left h2 { position: static; }
  .features { padding: 80px 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card-large { grid-column: span 1; }
  .pricing { padding: 80px 20px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .closing { padding: 80px 20px; }
  .footer { padding: 24px 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
  .nav-tag { display: none; }
}