:root {
  --bg-primary: #171C17;
  --bg-surface: #1E241E;
  --bg-surface-light: #282F28;
  --border-color: #3D4A3D;
  --text-primary: #FAF6F0;
  --text-secondary: #B5AFA5;
  --text-muted: #9A958C;
  --color-accent: #D4A855;
  --color-stats: #9E7B9E;
  --color-tools: #7B9E7B;
  --color-learn: #6B9E9E;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

a { color: inherit; text-underline-offset: 3px; }

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 5px;
  border-radius: 0.25rem;
}

.skip-link {
  position: absolute;
  top: 1rem;
  left: 1rem;
  transform: translateY(-200%);
  padding: 0.5rem 1rem;
  background: var(--bg-surface);
  z-index: 1;
}

.skip-link:focus { transform: translateY(0); }

.container { max-width: 720px; width: 100%; }
header { text-align: center; margin-bottom: 2.5rem; }

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.tagline { color: var(--text-secondary); font-size: 1.125rem; }
.sites { display: flex; flex-direction: column; gap: 1.25rem; }

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  padding: 1.75rem;
  text-decoration: none;
  display: block;
}

a.card {
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.card.stats { --card-color: var(--color-stats); }
.card.tools { --card-color: var(--color-tools); }
.card.learn { --card-color: var(--color-learn); }

a.card:hover {
  background: var(--bg-surface-light);
  border-color: var(--card-color);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.card-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.card-indicator.stats { background: var(--color-stats); }
.card-indicator.tools { background: var(--color-tools); }
.card-indicator.learn { background: var(--color-learn); }
.card-title { font-size: 1.5rem; font-weight: 600; line-height: 1.3; }
.card-description { color: var(--text-secondary); margin-bottom: 1rem; }
.card-features { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.feature-tag {
  background: var(--bg-surface-light);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
}

.visit-link { display: block; margin-top: 1.25rem; color: var(--color-accent); }
footer { margin-top: 2rem; text-align: center; color: var(--text-muted); font-size: 0.875rem; }
.back-link { display: inline-block; margin-bottom: 2rem; color: var(--text-secondary); }
.privacy-content h2 { margin: 1.5rem 0 0.5rem; font-size: 1.25rem; }
.privacy-content p + p { margin-top: 0.75rem; }

@media (max-width: 480px) {
  body { padding: 2rem 1.25rem; }
  h1 { font-size: 2rem; }
  .card { padding: 1.25rem; }
  .card-title { font-size: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  a.card { transition: none; }
  a.card:hover { transform: none; }
}