:root {
  --bg: #0a0a0a;
  --fg: #e8e8e8;
  --fg-muted: #888;
  --accent: #c8ff00;
  --accent-dim: rgba(200,255,0,0.12);
  --card-bg: #141414;
  --card-border: #222;
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', 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: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* HERO */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 48px 80px;
  position: relative;
  overflow: hidden;
}

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

.hero-grid {
  max-width: 900px;
}

.hero-label {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -2px;
  margin-bottom: 32px;
}

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

.hero-sub {
  font-size: 19px;
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.6;
}

.hero-stripe {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 60%);
}

/* FEATURES */
.features {
  padding: 120px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-tag {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 20px;
}

.features-header {
  margin-bottom: 64px;
}

.features-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -1px;
  max-width: 700px;
}

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

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 40px 36px;
  transition: border-color 0.3s ease;
}

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

.feature-num {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* METRICS */
.metrics {
  padding: 100px 48px;
  background: var(--card-bg);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.metrics-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
  margin-top: 48px;
}

.metric-val {
  font-family: var(--font-heading);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 12px;
}

.metric-label {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* CLOSING */
.closing {
  padding: 140px 48px;
  text-align: center;
}

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

.closing h2 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 28px;
}

.closing-sub {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.closing-mark {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 6px;
  color: var(--accent);
  opacity: 0.6;
}

/* FOOTER */
.site-footer {
  padding: 32px 48px;
  border-top: 1px solid var(--card-border);
}

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

.footer-left, .footer-right {
  font-size: 13px;
  color: var(--fg-muted);
}

.footer-right a {
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-right a:hover {
  color: var(--accent);
}

/* MOBILE */
@media (max-width: 768px) {
  .hero {
    padding: 80px 24px 60px;
    min-height: 80vh;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .hero-sub {
    font-size: 16px;
  }

  .features {
    padding: 80px 24px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 28px 24px;
  }

  .metrics {
    padding: 60px 24px;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .closing {
    padding: 80px 24px;
  }

  .site-footer {
    padding: 24px;
  }

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