:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #666;
  --border: #e2e2e2;
  --link: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #eaeaea;
    --bg: #121212;
    --muted: #a0a0a0;
    --border: #2a2a2a;
    --link: #6ea8fe;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

h1 { font-size: 1.6rem; margin-bottom: 4px; }

.meta { color: var(--muted); font-size: 0.9rem; margin-top: 0; }

#content p { margin: 0 0 1em; }

.error { color: #d33; }

.skeleton {
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

/* FAQ accordion (faq.html) */
.faq { border-bottom: 1px solid var(--border); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 32px 16px 0;
  font-weight: 600;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 14px;
  font-size: 1.2rem;
  color: var(--muted);
}
.faq[open] summary::after { content: "\2212"; }
.faq summary:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
.faq-answer { color: var(--fg); padding-bottom: 8px; }