:root {
  --bg: #0d0e12;
  --bg-elevated: #16171d;
  --border: #2a2b33;
  --text: #f2f2f4;
  --text-secondary: #9a9ba3;
  --accent: #4f8cff;
  --green: #34c759;
  --yellow: #ffcc00;
  --red: #ff453a;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 14, 18, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

.nav-links a:hover { color: var(--text); }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero {
  text-align: center;
  padding: 96px 0 48px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover { background: #3d7ae8; }

.btn-secondary {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover { background: #1c1d24; }

.requirement {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.mockup-section {
  display: flex;
  justify-content: center;
  padding: 24px 0 80px;
}

.app-screenshot {
  max-width: min(428px, 92vw);
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.features { padding: 40px 0 80px; }

.features h2 {
  text-align: center;
  font-size: 28px;
  margin-bottom: 40px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.feature-icon {
  font-size: 22px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.feature-card code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}

.download-section {
  text-align: center;
  padding: 40px 0 96px;
}

.download-section h2 { font-size: 28px; margin-bottom: 12px; }
.download-section p {
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.install-command {
  display: inline-block;
  text-align: left;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 20px;
  margin: 0 0 24px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  color: var(--text);
  line-height: 1.7;
}

.footer {
  text-align: center;
  padding: 32px 24px 48px;
  color: var(--text-secondary);
  font-size: 13px;
  border-top: 1px solid var(--border);
}

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

@media (max-width: 720px) {
  .feature-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
}