:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #555570;
  --accent: #00d4aa;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --accent-soft: rgba(0, 212, 170, 0.08);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', 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: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent), #00e6b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-glow {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Problem */
.problem {
  padding: 120px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem-label, .cap-label, .how-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.problem h2, .capabilities h2, .how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  margin-bottom: 60px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

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

.stat-number {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Capabilities */
.capabilities {
  padding: 120px 24px;
}

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

.cap-card {
  padding: 36px 30px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease;
}

.cap-card:hover {
  border-color: rgba(0, 212, 170, 0.3);
}

.cap-icon {
  font-size: 1.8rem;
  margin-bottom: 20px;
  filter: grayscale(0.3);
}

.cap-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.cap-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* How It Works */
.how {
  padding: 120px 24px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.how-step {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.how-step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--fg-dim);
  letter-spacing: -0.04em;
  line-height: 1;
  min-width: 100px;
}

.step-content h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: 1rem;
  color: var(--fg-muted);
  max-width: 500px;
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 140px 24px;
  text-align: center;
}

.closing-content {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 28px;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 48px;
}

.closing-vision {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent);
  padding: 16px 28px;
  background: var(--accent-soft);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: 100px;
  display: inline-block;
}

/* Footer */
.site-footer {
  padding: 60px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

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

/* Responsive */
@media (max-width: 768px) {
  .hero { min-height: 80vh; padding: 100px 20px 60px; }
  .hero-glow { width: 350px; height: 350px; }
  .problem, .capabilities, .how, .closing { padding: 80px 20px; }
  .problem-grid { grid-template-columns: 1fr; gap: 20px; }
  .cap-grid { grid-template-columns: 1fr; gap: 16px; }
  .how-step { flex-direction: column; gap: 16px; padding: 32px 0; }
  .step-num { font-size: 2.5rem; min-width: auto; }
  .stat-number { font-size: 2.4rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-badge { font-size: 10px; padding: 6px 16px; }
}