:root {
  --bg: #0a0a0b;
  --bg-elevated: #111113;
  --bg-card: #16161a;
  --fg: #ededef;
  --fg-muted: #8b8b94;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.12);
  --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 { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 32px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.5px;
  color: var(--accent);
}

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(110, 231, 183, 0.08), transparent);
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 32px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-badge {
  display: inline-block;
  width: fit-content;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2.5px;
  color: var(--fg);
  margin-bottom: 28px;
}

.hero-sub {
  font-size: 19px;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 620px;
}

.hero-visual {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 32px 80px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -1px;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--fg-muted);
  letter-spacing: 0.5px;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 120px 0;
  background: var(--bg);
}

.problem-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 56px;
}

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

.problem-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 32px;
}

.problem-icon {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
  opacity: 0.6;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 14px;
  color: var(--fg);
}

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

/* ---- HOW ---- */
.how {
  padding: 120px 0;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.how-subtitle {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 72px;
  max-width: 500px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.step:last-child {
  border-bottom: 1px solid var(--border);
}

.step-number {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.25;
  min-width: 60px;
  line-height: 1;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 560px;
}

/* ---- FEATURES ---- */
.features {
  padding: 120px 0;
  background: var(--bg);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 12px;
  color: var(--fg);
}

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

/* ---- CLOSING ---- */
.closing {
  padding: 160px 0;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 120%, rgba(110, 231, 183, 0.06), transparent), var(--bg-elevated);
}

.closing-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 28px;
}

.closing-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--accent);
  letter-spacing: -0.3px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--fg-muted);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero-content {
    padding: 40px 20px 30px;
  }

  .hero-visual {
    padding: 20px 20px 60px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .stat-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: left;
  }

  .stat-number {
    font-size: 32px;
    margin-bottom: 0;
  }

  .problem,
  .how,
  .features,
  .closing {
    padding: 80px 0;
  }

  .problem-inner,
  .how-inner,
  .features-inner,
  .closing-inner {
    padding: 0 20px;
  }

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

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

  .step {
    flex-direction: column;
    gap: 16px;
  }

  .step-number {
    font-size: 36px;
  }

  .how-subtitle {
    font-size: 28px;
    margin-bottom: 48px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding: 0 20px;
  }

  .nav {
    padding: 20px;
  }

  .closing {
    padding: 100px 0;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    letter-spacing: -1.5px;
  }

  .hero-sub {
    font-size: 16px;
  }
}