.page-faq {
  --faq-rule: 1px solid rgba(91, 101, 112, 0.34);
  --faq-soft-rule: 1px solid rgba(91, 101, 112, 0.24);
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  padding-top: calc(var(--header-h) + clamp(1.8rem, 5vw, 4rem));
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 1.2rem;
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--text);
  max-width: 15em;
}

.page-faq .faq-hero .lede {
  max-width: 40em;
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.85;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(91, 101, 112, 0.5);
  border-radius: 999px;
  background: rgba(14, 27, 46, 0.72);
  color: var(--text);
  font-size: 0.875rem;
  text-decoration: none;
  transition: border-color 0.24s ease, color 0.24s ease, background-color 0.24s ease;
}

.page-faq .faq-chip .mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-bright);
  background: rgba(63, 224, 255, 0.09);
}

.page-faq .faq-hero-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero-figure .media-frame {
  border: var(--panel-border);
}

.page-faq .media-figure .media-caption {
  margin-top: 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-body {
  display: grid;
  gap: 1.6rem;
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

/* 索引：移动端为横向滚动条 */
.page-faq .faq-index {
  border: var(--panel-border);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(19, 38, 61, 0.92), rgba(7, 17, 31, 0.92));
  padding: 0.9rem 1rem 1rem;
  min-width: 0;
}

.page-faq .faq-index-title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: none;
}

.page-faq .faq-index-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--text);
  font-size: 0.875rem;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.24s ease, color 0.24s ease, background-color 0.24s ease;
}

.page-faq .faq-index-list a .mono {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  border-color: rgba(63, 224, 255, 0.55);
  background: rgba(63, 224, 255, 0.08);
  color: var(--cyan-bright);
}

.page-faq .faq-index-note {
  margin: 0.9rem 0 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-index-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 184, 75, 0.5);
  padding-bottom: 0.15rem;
}

.page-faq .faq-index-cta:hover,
.page-faq .faq-index-cta:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  min-width: 0;
}

.page-faq .faq-group {
  border-top: var(--faq-rule);
  padding-top: clamp(1.4rem, 3vw, 2rem);
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 1.1rem;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.8vw, 1.95rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-group-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-list {
  display: grid;
}

.page-faq .faq-item {
  border-bottom: var(--faq-soft-rule);
  transition: background-color 0.3s ease;
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(19, 38, 61, 0.55), rgba(7, 17, 31, 0));
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1rem 0.35rem 1rem 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1.0313rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 3px;
}

.page-faq .faq-q-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  padding-top: 0.2em;
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  transition: color 0.24s ease;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--gold);
  transition: color 0.24s ease;
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--cyan-bright);
}

.page-faq .faq-item summary:hover .faq-q-text {
  color: var(--cyan-bright);
}

.page-faq .faq-a {
  padding: 0 0.9rem 1.3rem 1.75rem;
  font-size: 0.9688rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}

.page-faq .faq-a p {
  margin: 0 0 0.75em;
}

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

.page-faq .faq-a strong {
  color: var(--text);
  font-weight: 600;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 0.5rem 0 0.85rem;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 1.95rem;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-aside {
  margin: 0.8rem 0 0;
  padding: 0.65rem 0.9rem;
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(245, 184, 75, 0.08);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .faq-aside .mono {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 255, 0.4);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--cyan-bright);
  border-bottom-color: var(--cyan-bright);
}

/* 联系前准备 */
.page-faq .faq-support {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.page-faq .faq-support-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-support-figure .media-frame {
  border: var(--panel-border);
}

.page-faq .faq-checklist {
  border: var(--panel-border);
  border-radius: var(--radius);
  background: rgba(19, 38, 61, 0.6);
  padding: 1rem 1.1rem 1.15rem;
  min-width: 0;
}

.page-faq .faq-checklist-title {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-checklist ol {
  list-style: none;
  counter-reset: faq-check;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-checklist li {
  counter-increment: faq-check;
  position: relative;
  padding-left: 1.9rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .faq-checklist li::before {
  content: counter(faq-check, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-checklist li span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 结尾引导 */
.page-faq .faq-tail {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.5rem;
  padding: clamp(1.2rem, 3vw, 1.9rem);
  border: 1px solid rgba(245, 184, 75, 0.36);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(245, 184, 75, 0.14), rgba(63, 224, 255, 0.08));
}

.page-faq .faq-tail-copy {
  min-width: 0;
  flex: 1 1 20rem;
}

.page-faq .faq-tail-copy h2 {
  margin: 0.5rem 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}

.page-faq .faq-tail-copy p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

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

/* 平板及以上：侧栏索引 */
@media (min-width: 768px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-a {
    padding-left: 2.35rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-faq .faq-hero-figure {
    margin-bottom: 0.4rem;
  }

  .page-faq .faq-body {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.6rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
    padding: 1.1rem 1.1rem 1.2rem;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    overflow: visible;
    gap: 0.15rem;
  }

  .page-faq .faq-index-list a {
    width: 100%;
    border-radius: var(--radius);
    padding: 0.55rem 0.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-index-list a,
  .page-faq .faq-q-text,
  .page-faq .faq-item summary::after {
    transition: none;
  }
}