:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a2035;
  --bg-card-accent: #0f2a1f;
  --text-primary: #f0f4ff;
  --text-secondary: #8b9cc7;
  --text-muted: #5b6b8f;
  --accent: #3bf0a0;
  --accent-dim: #1a8f5c;
  --accent-glow: rgba(59, 240, 160, 0.15);
  --gradient-start: #3bf0a0;
  --gradient-end: #00c2ff;
  --border: #1e2a42;
  --radius: 12px;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.1;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  position: relative;
  background: 
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59, 240, 160, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(0, 194, 255, 0.05) 0%, transparent 50%),
    var(--bg-primary);
}

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

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--accent-dim);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 32px;
  background: var(--accent-glow);
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem);
  margin-bottom: 28px;
  letter-spacing: -0.03em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 56px;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat-number {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Problem Section */
.problem {
  padding: 120px 24px;
  background: var(--bg-secondary);
}

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

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 56px;
  text-align: center;
}

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

.problem-card {
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

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

.problem-card.new {
  background: var(--bg-card-accent);
  border-color: var(--accent-dim);
}

.card-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.problem-card.new .card-label {
  color: var(--accent);
}

.problem-card ul {
  list-style: none;
  padding: 0;
}

.problem-card li {
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding-left: 20px;
  position: relative;
}

.problem-card li:last-child {
  border-bottom: none;
}

.problem-card.old li::before {
  content: '\2715';
  position: absolute;
  left: 0;
  color: #ff5c5c;
  font-size: 0.8rem;
}

.problem-card.new li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.9rem;
}

/* Features */
.features {
  padding: 120px 24px;
  background: var(--bg-primary);
}

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

.features h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  text-align: center;
  margin-bottom: 12px;
}

.features-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 64px;
}

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

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

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

.feature-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.feature h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.feature p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 120px 24px;
  background: var(--bg-secondary);
  text-align: center;
}

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

.closing h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 24px;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
}

.closing-vision {
  padding: 32px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(59, 240, 160, 0.06), rgba(0, 194, 255, 0.04));
  border: 1px solid var(--accent-dim);
}

.closing-vision p {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
}

/* Footer */
.site-footer {
  padding: 48px 24px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

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

/* Responsive */
@media (max-width: 768px) {
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .problem-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .hero {
    padding: 80px 20px 60px;
    min-height: auto;
  }
  
  .problem, .features, .closing {
    padding: 80px 20px;
  }
}