:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --text-primary: #f0f0f5;
  --text-secondary: #9898a8;
  --text-muted: #6a6a7a;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-glow: rgba(0, 212, 170, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(0, 212, 170, 0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* === HERO === */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 24px 60px;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.4;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 32px;
  width: fit-content;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

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

.lede {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.hero-visual {
  margin-top: 64px;
}

.flow-diagram {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  flex-wrap: wrap;
  justify-content: center;
}

.flow-node {
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
}

.node-in {
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.25);
  color: #ff8a8a;
}

.node-ai {
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  color: var(--accent);
}

.node-out {
  background: rgba(100, 200, 255, 0.1);
  border: 1px solid rgba(100, 200, 255, 0.25);
  color: #7ecfff;
}

.flow-arrow {
  color: var(--text-muted);
  font-size: 1.5rem;
}

/* === PROBLEM === */
.problem {
  padding: 100px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  max-width: 700px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.problem-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: var(--border-accent);
}

.problem-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.problem-card p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

.problem-cta {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
}

/* === SERVICES === */
.services {
  padding: 100px 24px;
}

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

.services-header {
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--accent);
  margin-bottom: 16px;
}

.services-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

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

.service-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* === HOW === */
.how {
  padding: 100px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.steps-grid {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 250px;
  padding: 32px;
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.35;
  margin-bottom: 16px;
  line-height: 1;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.step-connector {
  display: none;
}

/* === CLOSING === */
.closing {
  padding: 120px 24px;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.2;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.closing-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: 36px;
}

.closing-accent {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: inline-block;
}

/* === FOOTER === */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-contact {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* === MOBILE === */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 60px 20px 40px;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-divider {
    display: none;
  }

  .problem {
    padding: 60px 20px;
  }

  .services {
    padding: 60px 20px;
  }

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

  .how {
    padding: 60px 20px;
  }

  .steps-grid {
    flex-direction: column;
  }

  .step {
    padding: 24px 0;
  }

  .closing {
    padding: 80px 20px;
  }

  .flow-diagram {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }

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