@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,600;0,700;0,800;1,400&display=swap');

:root {
  --bg-main: #0a0b0d;
  --bg-surface: #101216;
  --bg-surface-elevated: #16191f;
  --border-color: #242933;
  --border-active: #3b4252;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #57606a;
  
  --accent-green: #00ff88;
  --accent-green-dim: rgba(0, 255, 136, 0.12);
  --accent-cyan: #00e5ff;
  --accent-cyan-dim: rgba(0, 229, 255, 0.12);
  --accent-amber: #ffb400;
  --accent-amber-dim: rgba(255, 180, 0, 0.12);
  --accent-red: #ff4757;
  --accent-red-dim: rgba(255, 71, 87, 0.15);

  --font-mono: 'JetBrains Mono', 'Geist Mono', 'SFMono-Regular', Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAVBAR */
.navbar {
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-main);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.5px;
  font-size: 15px;
  color: var(--text-primary);
}

.brand-logo .term-prefix {
  color: var(--accent-green);
}

.brand-tag {
  font-size: 10px;
  text-transform: uppercase;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 13px;
}

.nav-links a:hover {
  color: var(--accent-green);
  text-decoration: none;
}

/* HERO SECTION */
.hero-section {
  padding: 80px 0 60px 0;
  border-bottom: 1px solid var(--border-color);
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--accent-green-dim);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--accent-green);
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 820px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

/* METRICS STRIP */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border-color);
  border: 1px solid var(--border-color);
  margin-top: 40px;
}

.metric-item {
  background: var(--bg-surface);
  padding: 20px;
}

.metric-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.metric-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-green);
}

/* SECTION TITLES */
.section {
  padding: 70px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 36px;
}

.section-tag {
  color: var(--accent-green);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: 10px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 14px;
  max-width: 720px;
}

/* ARCHITECTURE STEPS */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.arch-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 24px;
  position: relative;
}

.arch-step-num {
  font-size: 12px;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 12px;
}

.arch-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}

.arch-card-desc {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.6;
}

/* FOOTER */
.footer {
  padding: 50px 0 30px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-brand h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 12px;
  max-width: 400px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 11px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-actions {
    flex-direction: column;
  }
}