:root {
  --bg: #0a0f1a;
  --bg-elevated: #111827;
  --bg-card: #1a2235;
  --fg: #e8edf5;
  --fg-muted: #8b9ab5;
  --accent: #22d3a7;
  --accent-dim: rgba(34, 211, 167, 0.12);
  --accent-glow: rgba(34, 211, 167, 0.25);
  --warn: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  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: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4rem 2rem;
  text-align: center;
  position: relative;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-dim) 0%, transparent 60%);
}

.hero-inner {
  max-width: 720px;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero h1 .accent {
  color: var(--accent);
}

.lede {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
}

.hero-visual {
  margin-top: 4rem;
}

.flow-diagram {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.06);
}

.flow-step {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}

.flow-step.active {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
}

.flow-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  font-size: 0.75rem;
  font-weight: 600;
}

.flow-step.active .flow-icon {
  background: var(--accent);
  color: var(--bg);
}

.flow-arrow {
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--fg-muted), var(--accent));
  border-radius: 2px;
}

/* PROBLEM */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
}

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

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 3rem;
  text-align: center;
  letter-spacing: -0.02em;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.problem-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.05);
}

.problem-stat {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--warn);
  margin-bottom: 0.5rem;
}

.problem-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* HOW */
.how {
  padding: 6rem 2rem;
}

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

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
  text-align: center;
  letter-spacing: -0.02em;
}

.how-subtitle {
  text-align: center;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 3.5rem;
  font-size: 1.05rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.feature {
  padding: 2rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.2s;
}

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

.feature-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1rem;
}

.feature h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.feature p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* NUMBERS */
.numbers {
  padding: 6rem 2rem;
  background: var(--bg-elevated);
}

.numbers-inner {
  max-width: 800px;
  margin: 0 auto;
}

.numbers-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.numbers-comparison {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
}

.numbers-col {
  flex: 1;
  padding: 2.5rem 2rem;
}

.numbers-col.after {
  background: var(--accent-dim);
}

.col-label {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.5rem;
  color: var(--fg-muted);
}

.numbers-col.after .col-label {
  color: var(--accent);
}

.metric {
  margin-bottom: 1.2rem;
}

.metric .val {
  display: block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
}

.numbers-col.after .val {
  color: var(--accent);
}

.metric .desc {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

.numbers-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* CLOSING */
.closing {
  padding: 8rem 2rem;
  text-align: center;
}

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

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.closing-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* HERO CTA */
.hero-cta {
  margin-top: 2rem;
}

.cta-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: var(--radius-sm);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s;
}

.cta-btn:hover {
  opacity: 0.88;
}

/* FOOTER */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.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-weight: 700;
  font-size: 1.1rem;
}

.footer-meta {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .flow-diagram {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem;
  }
  
  .flow-arrow {
    width: 2px;
    height: 20px;
    background: linear-gradient(180deg, var(--fg-muted), var(--accent));
  }

  .numbers-comparison {
    flex-direction: column;
  }

  .numbers-divider {
    padding: 1rem 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

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