:root {
  --color-primary: #00E5A0;
  --color-primary-hover: #00CC8E;
  --color-secondary: #58A6FF;
  --color-warning: #D29922;
  --color-error: #F85149;
  --color-success: #3FB950;
  --bg: #0D1117;
  --surface: #161B22;
  --border: #30363D;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-tertiary: #484F58;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
  --line-height: 1.6;
  --line-height-heading: 1.3;
  --max-width-prose: 720px;
  --max-width-page: 960px;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 8px;
  padding: 8px 16px;
  background: var(--color-primary);
  color: var(--bg);
  font-weight: 600;
  border-radius: 4px;
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus {
  top: 8px;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  line-height: var(--line-height-heading);
  margin: 0 0 0.5em;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { color: var(--color-primary-hover); }
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.nav-inner {
  max-width: var(--max-width-page);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.125rem;
  text-decoration: none;
}
.nav-brand:hover { color: var(--text-primary); }
.nav-brand svg { flex-shrink: 0; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}
.nav-links a:hover { color: var(--text-primary); }

/* Hero */
.hero {
  text-align: center;
  padding: 80px 24px 64px;
  max-width: var(--max-width-page);
  margin: 0 auto;
}
.hero h1 {
  font-size: 2rem;
  margin-bottom: 16px;
}
.hero .tagline {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: var(--max-width-prose);
  margin: 0 auto 32px;
}

/* Product section */
.products {
  max-width: var(--max-width-page);
  margin: 0 auto;
  padding: 0 24px 64px;
}
.products > h2 {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 24px;
}

/* Product card */
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
  transition: border-color 0.15s;
}
.product-card:hover {
  border-color: var(--text-tertiary);
}
.product-card h2 {
  margin-bottom: 4px;
}
.product-card h2 a {
  color: var(--text-primary);
}
.product-card h2 a:hover {
  color: var(--color-primary);
}
.product-description {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Code blocks */
pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 0 0 24px;
}
pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* Install command */
.install-cmd {
  display: flex;
  align-items: center;
  gap: 8px;
}
.install-cmd .prompt {
  color: var(--text-tertiary);
  user-select: none;
}

/* Feature list */
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  list-style: none;
  padding: 0;
}
.features li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 12px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* Link row */
.link-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.link-row a {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}
.site-footer a {
  color: var(--text-secondary);
}
.site-footer a:hover {
  color: var(--text-primary);
}

/* TextLens page */
.tl-hero {
  padding-bottom: 48px;
}
.tl-breadcrumb {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.tl-breadcrumb a {
  color: var(--text-secondary);
}
.tl-breadcrumb a:hover {
  color: var(--color-primary);
}
.tl-install {
  max-width: 360px;
  margin: 0 auto 24px;
  text-align: left;
}
.tl-highlights {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.tl-highlights li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 4px 14px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}
.tl-section {
  max-width: var(--max-width-page);
  margin: 0 auto;
  padding: 0 24px 56px;
}
.tl-section h2 {
  margin-bottom: 12px;
}
.tl-desc {
  color: var(--text-secondary);
  max-width: var(--max-width-prose);
  margin-bottom: 20px;
}
.tl-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.tl-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.tl-card h3 {
  margin-bottom: 4px;
}
.tl-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.tl-card pre {
  margin-bottom: 0;
}
.tl-cta {
  text-align: center;
  padding-bottom: 64px;
}
.tl-links {
  justify-content: center;
}

/* Syntax highlighting (CSS-only, no JS) */
.tl-kw { color: var(--color-secondary); }
.tl-str { color: var(--color-primary); }
.tl-cmt { color: var(--text-tertiary); }

/* Responsive */
@media (min-width: 640px) {
  .hero {
    padding: 120px 24px 80px;
  }
  .hero h1 {
    font-size: 2.5rem;
  }
  .product-card {
    padding: 40px;
  }
  .tl-hero {
    padding-bottom: 56px;
  }
  .tl-grid {
    grid-template-columns: 1fr 1fr;
  }
}