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

html {
  overflow-y: scroll;
  scrollbar-gutter: stable;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--ink, #18181b);
  background: #ffffff;
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  font-size: 0.8rem;
  color: var(--muted, #999);
}
.site-footer a {
  color: var(--muted, #999);
  text-decoration: none;
  margin: 0 0.5rem;
}
.site-footer a:hover {
  text-decoration: underline;
}

/* Feature highlight pulse — from trail tip ?feature= links */
.feature-highlight {
  outline: 3px solid #2563eb;
  outline-offset: 4px;
  border-radius: 6px;
  animation: feature-pulse 1s ease-in-out 3;
}
@keyframes feature-pulse {
  0%, 100% { outline-color: #2563eb; }
  50% { outline-color: #93c5fd; }
}

/* Trail breadcrumb — back to quiz trail */
.trail-breadcrumb {
  background: var(--surface, #f8f9fa);
  border-bottom: 1px solid var(--line, #e5e7eb);
  padding: 0.35rem 1rem;
  text-align: center;
}
.trail-breadcrumb-link {
  font-size: 0.8rem;
  color: var(--accent, #3b82f6);
  text-decoration: none;
  font-weight: 500;
}
.trail-breadcrumb-link:hover {
  text-decoration: underline;
}