:root {
  --bg: #0a0f1a;
  --bg-surface: #111827;
  --bg-card: #1a2236;
  --fg: #e8ecf4;
  --fg-muted: #8b95a8;
  --accent: #00e68a;
  --accent-dim: rgba(0, 230, 138, 0.12);
  --accent-glow: rgba(0, 230, 138, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --red: #ff4d6a;
  --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;
}

/* Nav */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  background: rgba(10, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.logo-mark {
  color: var(--accent);
  margin-right: 0.35rem;
}

/* Hero */
.hero {
  padding: 10rem 2rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-inner {
  max-width: 720px;
}
.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--accent-dim);
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
  margin-bottom: 1.75rem;
  border: 1px solid rgba(0, 230, 138, 0.2);
}
.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;
}
.hero-accent {
  color: var(--accent);
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
}
.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border);
}
.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* Problem */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.problem-label,
.how-label,
.numbers-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.problem h2,
.how h2,
.numbers h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 3rem;
}
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.problem-card {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.problem-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 77, 106, 0.1);
  color: var(--red);
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}
.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* How */
.how {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.how-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.how-step:last-child {
  border-bottom: none;
}
.step-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.5;
  line-height: 1;
}
.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.step-content p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 600px;
}

/* Numbers */
.numbers {
  padding: 6rem 2rem;
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.numbers-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.numbers-text p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-top: 1.5rem;
}
.numbers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.number-card {
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.number-val {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}
.number-desc {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* Closing */
.closing {
  padding: 7rem 2rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.closing-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}
.closing-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto;
}
.closing-line {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 2.5rem auto;
  border-radius: 2px;
}
.closing-tagline {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.01em;
}

/* Footer */
.footer {
  padding: 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-left {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
}
.footer-right {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* Mobile */
@media (max-width: 768px) {
  .hero {
    padding: 7rem 1.25rem 3rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
  }
  .problem, .how, .numbers, .closing {
    padding: 4rem 1.25rem;
  }
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .how-step {
    grid-template-columns: 50px 1fr;
    gap: 1rem;
    padding: 1.75rem 0;
  }
  .step-num {
    font-size: 1.75rem;
  }
  .numbers-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .numbers-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .nav {
    padding: 1rem 1.25rem;
  }
  .closing {
    padding: 5rem 1.25rem;
  }
}