:root {
  --bg-dark: #0a0a0f;
  --bg-section: #0e0e16;
  --bg-card: #151520;
  --bg-card-hover: #1a1a28;
  --text-primary: #f0f0f5;
  --text-secondary: #9494a8;
  --text-muted: #6a6a80;
  --accent: #5cff95;
  --accent-dim: rgba(92, 255, 149, 0.12);
  --accent-glow: rgba(92, 255, 149, 0.08);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 24px 80px;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(92, 255, 149, 0.06) 0%, transparent 70%),
              var(--bg-dark);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  opacity: 0.4;
}

.hero-badge {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
  border: 1px solid rgba(92, 255, 149, 0.15);
}

.hero h1 {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  margin-bottom: 28px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.7;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 40px;
  padding: 28px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 24px;
  background: var(--bg-section);
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(32px, 5vw, 52px);
  margin-bottom: 60px;
  text-align: center;
}

.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: var(--radius);
  padding: 36px 28px;
  transition: background 0.2s;
}

.problem-card:hover {
  background: var(--bg-card-hover);
}

.problem-icon {
  font-size: 20px;
  color: #ff5c5c;
  margin-bottom: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 92, 92, 0.1);
  border-radius: 10px;
}

.problem-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
  font-weight: 600;
}

.problem-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== HOW IT WORKS ===== */
.how {
  padding: 120px 24px;
  background: var(--bg-dark);
}

.how-inner {
  max-width: 720px;
  margin: 0 auto;
}

.section-tag {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
  text-align: center;
}

.how h2 {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 64px;
  text-align: center;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  min-width: 80px;
  line-height: 1;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FEATURES ===== */
.features {
  padding: 120px 24px;
  background: var(--bg-section);
}

.features-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 64px;
  text-align: center;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.2s, background 0.2s;
}

.feature-card:hover {
  border-color: rgba(92, 255, 149, 0.2);
  background: var(--bg-card-hover);
}

.feature-large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(92, 255, 149, 0.03) 100%);
}

.feature-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 24px;
  background: var(--bg-dark);
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(92, 255, 149, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

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

.closing h2 {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 28px;
}

.closing-text {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}

.closing-accent {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 16px;
  font-weight: 500;
  color: var(--accent);
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: inline-block;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-dark);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    padding: 100px 20px 60px;
    min-height: 80vh;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 20px;
    padding: 24px 32px;
  }
  
  .stat-divider {
    width: 40px;
    height: 1px;
  }
  
  .problem-grid {
    grid-template-columns: 1fr;
  }
  
  .step {
    flex-direction: column;
    gap: 12px;
  }
  
  .step-num {
    font-size: 36px;
    min-width: auto;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-large {
    grid-column: 1;
  }
  
  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  
  .problem, .how, .features, .closing {
    padding: 80px 20px;
  }
}