.page-faq {
  --faq-link: #8C2F14;
  --faq-link-line: #C9704F;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: calc(var(--mast-h) + 52px) 0 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
  margin-top: 28px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 14ch;
  font-family: var(--font-title);
  font-weight: 200;
  font-size: clamp(2.4rem, 11vw, 5.4rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 62ch;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-hero__figure .figure__frame {
  border: 1px solid var(--hairline-cyan);
}

/* ---------- 数据条 ---------- */
.page-faq .faq-facts {
  list-style: none;
  margin: 44px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hairline);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-facts__item {
  background: var(--space);
  padding: 18px 16px 20px;
}

.page-faq .faq-facts__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-facts__label {
  display: block;
  margin-top: 9px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-toc {
  margin-top: 68px;
  padding: 50px 0 56px;
  background: linear-gradient(180deg, rgba(18, 28, 61, 0.92), rgba(10, 16, 36, 0.55));
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-toc__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hairline-cyan);
}

.page-faq .faq-toc__heading {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-faq .faq-toc__hint {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-faq .faq-toc__label {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin: 0 0 8px;
  padding-bottom: 9px;
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--violet-soft);
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ember);
}

.page-faq .faq-toc__sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-toc__link {
  display: block;
  padding: 7px 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease, padding-left 0.18s ease;
}

.page-faq .faq-toc__link:hover {
  color: var(--white);
  border-bottom-color: var(--hairline-cyan);
  padding-left: 5px;
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 答案区 ---------- */
.page-faq .faq-blocks {
  padding: 20px 0 84px;
}

.page-faq .faq-block {
  padding: 46px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-faq .faq-block:last-child {
  border-bottom: 0;
}

.page-faq .faq-block__index {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--ember);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 300;
  font-size: clamp(1.55rem, 5.4vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-block__lede {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-block__figure {
  margin: 26px 0 0;
  max-width: 320px;
}

.page-faq .faq-block__figure .figure__frame {
  border: 1px solid var(--hairline);
}

.page-faq .faq-block__list {
  margin-top: 28px;
  border-top: 1px solid var(--hairline);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--hairline);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--white);
  transition: color 0.18s ease;
}

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

.page-faq .qa__summary::marker {
  content: "";
}

.page-faq .qa__summary:hover {
  color: var(--cyan);
}

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

.page-faq .qa[open] .qa__summary {
  color: var(--cyan);
}

.page-faq .qa__num {
  flex: none;
  width: 22px;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 9px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .qa__sign::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 1px;
}

.page-faq .qa__sign::after {
  top: 0;
  left: 6px;
  width: 1px;
  height: 14px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__body {
  margin: 0 0 18px;
  padding: 20px 18px 22px;
  background: var(--cream);
  color: var(--ink);
  border-left: 3px solid var(--ember);
}

.page-faq .qa__a {
  margin: 0;
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .qa__links {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(43, 29, 20, 0.2);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: #6B5849;
}

.page-faq .qa__links a {
  margin-right: 16px;
  color: var(--faq-link);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-link-line);
}

.page-faq .qa__links a:hover,
.page-faq .qa__links a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-faq .qa__links a:focus-visible {
  outline: 2px solid var(--faq-link);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 40px;
  }

  .page-faq .qa__body {
    padding: 24px 30px 26px 34px;
  }

  .page-faq .faq-block__figure {
    max-width: 360px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-toc__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px 44px;
  }

  .page-faq .faq-block > .shell {
    display: grid;
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-block__list {
    margin-top: 0;
  }

  .page-faq .faq-block--mobile .faq-block__figure {
    max-width: 300px;
  }
}