:root {
  --bg: #050505;
  --surface: #0d0d0d;
  --border: #1a1a1a;
  --text: #e0e0e0;
  --muted: #666;
  --primary: #0066ff;
  --primary-hover: #0055dd;
  --accent: #00ff88;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav {
  position: sticky;
  top: 0;
  background: rgba(5, 5, 5, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  padding: 14px 0;
}

.nav-inner { display: flex; align-items: center; justify-content: space-between; }

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-sm { padding: 6px 16px; font-size: 0.8rem; }

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--muted); }

/* Hero */
.hero {
  padding: 120px 0 80px;
  text-align: center;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 48px; }

.hero-code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: inline-block;
  text-align: left;
}

.hero-code code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.85rem;
  color: var(--accent);
  line-height: 1.8;
}

/* Features */
.features { padding: 80px 0; }

.features h2, .how-it-works h2, .get-started h2 {
  font-size: 2.2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: #333; }

.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--muted); }

/* How It Works */
.how-it-works { padding: 80px 0; background: var(--surface); }

.steps {
  display: flex;
  gap: 32px;
  justify-content: center;
}

.step {
  text-align: center;
  max-width: 280px;
}

.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
}

.step h3 { margin-bottom: 8px; }
.step p { font-size: 0.9rem; color: var(--muted); }

/* Get Started */
.get-started { padding: 80px 0; text-align: center; }

.install-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 32px;
  display: inline-block;
  margin-bottom: 32px;
}

.install-block code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 1.1rem;
  color: var(--accent);
}

.quick-commands {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.cmd {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.cmd-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cmd code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text);
}

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

footer p { font-size: 0.9rem; color: var(--muted); }
footer a { color: var(--primary); text-decoration: none; }
footer a:hover { text-decoration: underline; }

.footer-sub { font-size: 0.8rem; margin-top: 8px; }

/* Architecture */
.architecture { padding: 80px 0; }

.arch-diagram { text-align: center; margin-bottom: 40px; }
.arch-layer { display: inline-flex; flex-direction: column; align-items: center; gap: 8px; }
.arch-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 0.9rem;
  min-width: 200px;
}
.arch-box.highlight { border-color: var(--primary); color: var(--primary); }
.arch-arrow { color: var(--muted); font-size: 1.2rem; }

.arch-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 500px;
  margin: 0 auto;
}
.stack-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--surface);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.stack-label { color: var(--muted); font-size: 0.85rem; }
.stack-value { font-size: 0.85rem; font-weight: 500; }

/* Comparisons */
.comparisons { padding: 80px 0; background: var(--surface); }

.compare-table {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  border-collapse: collapse;
}
.compare-table th, .compare-table td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.compare-table th { color: var(--muted); font-weight: 500; }
.compare-table td:first-child { text-align: left; }

/* FAQ */
.faq { padding: 80px 0; }

.faq-grid { max-width: 600px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--text);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "+ "; color: var(--primary); }
.faq-item[open] summary::before { content: "- "; }

.faq-item p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* CTA */
.cta {
  padding: 100px 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, #0a1628 100%);
}

.cta h2 {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.cta p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* Testimonials */
.testimonials { padding: 80px 0; background: var(--surface); }

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.testimonial {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.testimonial p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text);
  margin-bottom: 12px;
  font-style: italic;
}

.testimonial .author {
  font-size: 0.8rem;
  color: var(--muted);
}

/* Newsletter */
.newsletter {
  padding: 80px 0;
  text-align: center;
}

.newsletter h2 { margin-bottom: 8px; }
.newsletter p { color: var(--muted); margin-bottom: 24px; }

.newsletter-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 400px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}
.newsletter-form input:focus { border-color: var(--primary); }

/* Stats */
.stats { padding: 60px 0; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  padding: 24px;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Security */
.security { padding: 80px 0; background: var(--surface); }

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.security-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.security-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.security-card p { font-size: 0.9rem; color: var(--muted); }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { flex-direction: column; align-items: center; }
  .quick-commands { flex-direction: column; align-items: center; }
  .nav-links { gap: 16px; }
  .nav-links a:not(.btn) { display: none; }
}