:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-elevated: #1a1a26;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #6ee7b7;
  --accent-glow: rgba(110, 231, 183, 0.15);
  --accent-warm: #f9a825;
  --red: #ef5350;
  --green: #66bb6a;
  --yellow: #fdd835;
  --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);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 32px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}

/* HERO */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

.hero-content {
  max-width: 680px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.highlight {
  color: var(--accent);
  position: relative;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* DEMO CARD */
.hero-visual {
  display: flex;
  justify-content: center;
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  width: 100%;
  max-width: 600px;
  overflow: hidden;
}

.demo-header {
  display: flex;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.demo-dot.red { background: var(--red); opacity: 0.7; }
.demo-dot.yellow { background: var(--yellow); opacity: 0.7; }
.demo-dot.green { background: var(--green); opacity: 0.7; }

.demo-body {
  padding: 24px;
}

.demo-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  display: block;
  margin-bottom: 8px;
}

.human-label {
  color: var(--accent);
}

.demo-text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--fg-muted);
}

.demo-text.faded {
  opacity: 0.6;
}

.demo-score {
  margin-top: 16px;
  margin-bottom: 16px;
}

.score-bar {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 6px;
}

.score-fill {
  height: 100%;
  background: var(--red);
  border-radius: 100px;
  transition: width 1s ease;
}

.score-fill.safe {
  background: var(--accent);
}

.score-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--red);
}

.safe-text {
  color: var(--accent);
}

.demo-arrow {
  text-align: center;
  color: var(--fg-dim);
  font-size: 1.3rem;
  padding: 4px 0;
}

.demo-input, .demo-output {
  background: var(--bg-elevated);
  padding: 16px;
  border-radius: var(--radius-sm);
}

.demo-output {
  border: 1px solid rgba(110, 231, 183, 0.12);
}

/* WORKFLOW */
.workflow {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
}

.section-header {
  margin-bottom: 60px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
}

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

.step {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius);
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 20px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
}

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

/* FEATURES */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 32px 100px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(110, 231, 183, 0.15);
}

.feature-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* NUMBERS */
.numbers {
  padding: 80px 32px;
  background: linear-gradient(180deg, transparent, var(--accent-glow), transparent);
}

.numbers-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.number-value {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.number-desc {
  color: var(--fg-muted);
  font-size: 0.95rem;
  max-width: 240px;
  margin: 0 auto;
}

/* CLOSING */
.closing {
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 32px;
  text-align: center;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.15;
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

/* FOOTER */
.footer {
  border-top: 1px solid rgba(255,255,255,0.04);
  padding: 40px 32px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

/* CTA BUTTON */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0a0a0f;
  text-decoration: none;
  border-radius: var(--radius-sm);
  padding: 14px 32px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: all 0.2s;
}

.cta-btn:hover {
  background: #86efcb;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(110, 231, 183, 0.3);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero {
    padding: 0 20px 60px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .numbers-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .workflow, .features, .closing {
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav {
    padding: 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .demo-card {
    max-width: 100%;
  }
}