:root { color-scheme: light dark; }

body {
  margin: 0;
  background: var(--app-bg, #fafafa);
  color: var(--app-text, #18181b);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}

.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 72px;
}

.faq-hero {
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--app-line, rgba(0, 0, 0, .12));
}

.faq-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .65;
}

.faq-wrap h1 {
  margin: 0 0 14px;
  font-size: 30px;
  line-height: 1.32;
  font-weight: 700;
}

.faq-lede {
  margin: 0;
  font-size: 16px;
  max-width: 70ch;
  opacity: .86;
}

.faq-note {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--app-accent, #f59e0b);
  background: color-mix(in srgb, var(--app-text, #000) 4%, transparent);
  font-size: 14px;
}

.faq-toc {
  margin: 26px 0 8px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.faq-toc a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--app-line, rgba(0, 0, 0, .14));
  border-radius: 999px;
  font-size: 13px;
  text-decoration: none;
  color: inherit;
  opacity: .85;
}

.faq-toc a:hover {
  opacity: 1;
  border-color: var(--app-accent, #f59e0b);
}

.faq-group {
  margin: 34px 0 0;
}

.faq-group > h2 {
  margin: 0 0 14px;
  font-size: 19px;
  font-weight: 700;
}

.faq-group details {
  margin: 0 0 10px;
  padding: 14px 16px;
  border: 1px solid var(--app-line, rgba(0, 0, 0, .12));
  border-radius: 10px;
}

.faq-group details[open] {
  border-color: color-mix(in srgb, var(--app-accent, #f59e0b) 55%, transparent);
}

.faq-group summary {
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
}

.faq-group details p {
  margin: 10px 0 0;
  font-size: 14.5px;
  opacity: .9;
}

.faq-group details ul {
  margin: 10px 0 0;
  padding-left: 20px;
  font-size: 14.5px;
  opacity: .9;
}

.faq-wrap a {
  color: inherit;
}

.faq-foot {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--app-line, rgba(0, 0, 0, .12));
  font-size: 13.5px;
  opacity: .72;
}

@media (max-width: 560px) {
  .faq-wrap h1 { font-size: 24px; }
  .faq-wrap { padding: 20px 14px 56px; }
}