.page-faq {
  color: var(--ink);
  font-family: var(--font-body);
}

.page-faq .faq-hero {
  padding: 1.5rem 0 2rem;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-hero h1 {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 6vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  max-width: 24ch;
}

.page-faq .faq-hero .lede {
  margin: 1rem 0 0;
  max-width: 46ch;
  font-size: 0.95rem;
  line-height: 1.8;
}

/* 三项快速核对 */
.page-faq .quick-check {
  margin-top: 2rem;
  display: grid;
  gap: 1.5rem;
}

.page-faq .quick-check__intro h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.3;
}

.page-faq .quick-check__intro > p {
  margin: 0;
  max-width: 40ch;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .check-list {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .check-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding: 0.9rem 1rem;
  background: var(--glove);
}

.page-faq .check-list__num {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  background: var(--red);
  color: var(--glove);
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 1;
}

.page-faq .check-list__body strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.page-faq .check-list__body span {
  display: block;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .version-badge {
  display: inline-block;
  margin: 0 0.15rem;
  padding: 0.05rem 0.5rem;
  background: var(--yellow);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.92em;
  line-height: 1.5;
}

.page-faq .quick-check__figure {
  margin: 0;
}

.page-faq .quick-check__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  background: var(--paper);
  object-fit: cover;
}

.page-faq .quick-check__figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 索引 + 问答流 */
.page-faq .faq-layout {
  margin-top: 2.5rem;
  display: grid;
  gap: 2rem;
}

.page-faq .faq-toc__label {
  margin: 0 0 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.page-faq .faq-toc__list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--grid);
  background: var(--glove);
  color: var(--ink);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--red);
  color: var(--red);
}

.page-faq .faq-toc__num {
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--red);
}

.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  --accent: var(--red);
  margin-bottom: 2.5rem;
  scroll-margin-top: 4.5rem;
}

.page-faq .faq-group--login {
  --accent: var(--blue);
}

.page-faq .faq-group--switch {
  --accent: var(--red-deep);
}

.page-faq .faq-group--version {
  --accent: var(--ink);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-bottom: 0.35rem;
  padding-top: 0.55rem;
  border-top: 3px solid var(--accent);
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.35;
}

.page-faq .faq-group__note {
  margin: 0 0 0.9rem;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--grid);
  background: var(--glove);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  padding: 0.9rem 2.6rem 0.9rem 0.9rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.93rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 0.85rem;
  top: 0.85rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--accent);
}

.page-faq .faq-item[open] {
  box-shadow: inset 3px 0 0 var(--accent);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item__body {
  padding: 0 1.1rem 1.1rem 1.1rem;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-item__body p {
  margin: 0 0 0.6rem;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body ol {
  margin: 0.35rem 0 0.65rem;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.25rem;
}

.page-faq .faq-item__body a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.page-faq .group-media {
  margin: 1.4rem 0 0;
}

.page-faq .group-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  background: var(--paper);
  object-fit: cover;
}

.page-faq .group-media figcaption {
  margin-top: 0.5rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 联系收口 */
.page-faq .faq-support {
  margin: 1rem 0 2.5rem;
  scroll-margin-top: 4.5rem;
}

.page-faq .faq-support__card {
  padding: 1.4rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--grid);
  border-left: 6px solid var(--red);
}

.page-faq .faq-support__kicker {
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
}

.page-faq .faq-support__card h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  line-height: 1.35;
}

.page-faq .faq-support__card > p {
  margin: 0 0 1rem;
  max-width: 52ch;
  font-size: 0.88rem;
  line-height: 1.8;
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 0 0 1.2rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .faq-support__list li {
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem 0.85rem;
  background: var(--glove);
  font-size: 0.85rem;
}

.page-faq .faq-support__list span {
  color: var(--muted);
  font-size: 0.76rem;
}

.page-faq .faq-support__list strong {
  font-weight: 600;
  word-break: break-word;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-faq .faq-support__fine {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-support__fine a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

@media (min-width: 48rem) {
  .page-faq .faq-hero {
    padding-top: 2rem;
  }

  .page-faq .quick-check {
    margin-top: 2.5rem;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 2rem;
  }

  .page-faq .faq-support__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support__card {
    padding: 1.8rem 1.6rem;
  }
}

@media (min-width: 62rem) {
  .page-faq .faq-layout {
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 5rem;
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 0;
    margin-bottom: 1.2rem;
    overflow: visible;
    padding-bottom: 0;
    border-top: 1px solid var(--grid);
  }

  .page-faq .faq-toc__link {
    padding: 0.7rem 0.2rem;
    border: 0;
    border-bottom: 1px solid var(--grid);
    background: transparent;
    white-space: normal;
    font-size: 0.88rem;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    padding-left: 0.45rem;
  }

  .page-faq .faq-item > summary {
    padding-left: 1.1rem;
    font-size: 0.98rem;
  }

  .page-faq .faq-item__body {
    padding: 0 1.5rem 1.2rem 1.1rem;
  }

  .page-faq .faq-support__card {
    padding: 2rem 2.2rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-toc__link,
  .page-faq .faq-item > summary {
    transition: padding 0.2s var(--ease-out), color 0.2s var(--ease-out);
  }
}