:root {
  --bg: #0a0a0c;
  --bg-elevated: #111114;
  --bg-card: #16161a;
  --fg: #e8e6e3;
  --fg-muted: #8a8a8f;
  --fg-dim: #5a5a60;
  --mint: #3dffa2;
  --mint-glow: rgba(61, 255, 162, 0.15);
  --mint-subtle: rgba(61, 255, 162, 0.08);
  --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;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 48px 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  right: -300px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--mint-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  max-width: 900px;
  position: relative;
  z-index: 1;
}

.hero-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--mint);
  margin-bottom: 32px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
}

.mint {
  color: var(--mint);
  text-shadow: 0 0 60px var(--mint-glow);
}

.hero-lede {
  font-size: 1.25rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--fg-dim);
  margin-top: 4px;
}

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

/* ========== PROBLEM ========== */
.problem {
  padding: 120px 48px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--mint);
  margin-bottom: 24px;
}

.problem-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 700px;
  margin-bottom: 64px;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 32px;
  transition: border-color 0.3s ease;
}

.problem-card:hover {
  border-color: rgba(61, 255, 162, 0.2);
}

.problem-stat {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--mint);
  margin-bottom: 16px;
}

.problem-card p {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ========== FEATURES ========== */
.features {
  padding: 120px 48px;
}

.features-container {
  max-width: 900px;
  margin: 0 auto;
}

.feature-block {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  padding: 48px 0;
}

.feature-number {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-dim);
  min-width: 40px;
  padding-top: 6px;
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-content p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 600px;
}

.feature-divider {
  height: 1px;
  background: var(--border);
}

/* ========== CLOSING ========== */
.closing {
  padding: 120px 48px 140px;
  position: relative;
  text-align: center;
}

.closing-container {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.closing-accent {
  width: 60px;
  height: 4px;
  background: var(--mint);
  margin: 0 auto 40px;
  border-radius: 2px;
  box-shadow: 0 0 20px var(--mint-glow);
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.closing-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.8;
}

/* ========== FOOTER ========== */
.site-footer {
  padding: 48px;
  border-top: 1px solid var(--border);
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg);
}

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

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .hero {
    padding: 100px 24px 60px;
    min-height: auto;
  }

  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .problem {
    padding: 80px 24px;
  }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .features {
    padding: 80px 24px;
  }

  .feature-block {
    flex-direction: column;
    gap: 16px;
    padding: 32px 0;
  }

  .closing {
    padding: 80px 24px 100px;
  }

  .site-footer {
    padding: 32px 24px;
  }

  .footer-container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero-glow {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -150px;
  }
}

/* ========== SITE NAV (landing page) ========== */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 64px;
  background: rgba(10,10,12,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}
.site-nav-brand span { color: var(--mint); }

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
}
.site-nav-link:hover { color: var(--fg); background: var(--bg-elevated); }

.site-nav-cta {
  padding: 8px 18px;
  background: var(--mint);
  color: #0a0a0c;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  font-family: var(--font-display);
  transition: opacity 0.2s;
}
.site-nav-cta:hover { opacity: 0.85; }

/* ========== HERO CTAs ========== */
.hero-ctas {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-btn-primary {
  display: inline-block;
  padding: 16px 32px;
  background: var(--mint);
  color: #0a0a0c;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s, box-shadow 0.2s;
}
.hero-btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 0 32px var(--mint-glow);
}

.hero-btn-ghost {
  display: inline-block;
  padding: 16px 32px;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}
.hero-btn-ghost:hover { color: var(--fg); border-color: rgba(255,255,255,0.2); }

@media (max-width: 768px) {
  .site-nav { padding: 0 20px; }
  .site-nav-link { display: none; }
  .hero-ctas { flex-direction: column; align-items: flex-start; }
}