.page-faq {
  padding-top: var(--pad-top);
  padding-bottom: 96px;
  background: var(--ink-900);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 32px;
  padding: 40px 0 36px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(32px, 7vw, 64px);
  line-height: 1.08;
  letter-spacing: -.035em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 48ch;
  margin: 0;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero__search {
  display: flex;
  flex-direction: column;
  gap: 9px;
  max-width: 520px;
  margin-top: 26px;
}

.page-faq .faq-hero__search .search-input {
  width: 100%;
  padding: 14px 20px;
  font: inherit;
  font-size: 15px;
  color: var(--paper);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-faq .faq-hero__search .search-input::placeholder {
  color: var(--muted);
}

.page-faq .faq-hero__search .search-input:focus {
  outline: none;
  background: var(--ink-700);
  border-color: var(--cyan-400);
}

.page-faq .search-hint {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--muted);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-faq .faq-stat {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-faq .faq-stat li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 12px;
  background: var(--ink-800);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 25px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .faq-stat__label {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 34px;
  padding-top: 44px;
}

/* ---------- 锚点目录 ---------- */
.page-faq .faq-toc {
  padding: 18px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-toc ol {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 4px;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  background: var(--ink-700);
  color: var(--cyan-300);
  border-left-color: var(--cyan-400);
}

.page-faq .faq-toc .index-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan-400);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-bottom: 38px;
  scroll-margin-top: 120px;
}

.page-faq .faq-section + .faq-section {
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--cyan-400);
}

.page-faq .faq-section.is-active .faq-section__num {
  color: var(--orange-500);
}

.page-faq .faq-section h2 {
  margin: 0;
  font-size: clamp(23px, 4vw, 34px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-section__lede {
  max-width: 62ch;
  margin: 12px 0 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--r-card);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--ink-700);
  border-left-color: var(--cyan-400);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.2;
  color: var(--cyan-400);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--orange-500);
}

.page-faq .faq-item > summary:hover {
  color: var(--cyan-300);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
  border-radius: 4px;
}

.page-faq .faq-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-item[open] .faq-num {
  color: var(--cyan-400);
}

.page-faq .faq-answer {
  padding: 0 18px 18px 44px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-answer a:hover {
  color: var(--cyan-300);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  object-fit: cover;
  filter: saturate(.9) contrast(1.05);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 回到顶部 ---------- */
.page-faq .faq-top {
  margin: 6px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-top a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13.5px;
  letter-spacing: .08em;
  color: var(--cyan-300);
  text-decoration: none;
  border: 1px solid var(--cyan-400);
  border-radius: var(--r-pill);
  transition: background .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-top a:hover {
  background: var(--cyan-400);
  color: var(--ink-950);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, .85fr);
    gap: 56px;
    align-items: end;
    padding: 64px 0 52px;
  }

  .page-faq .faq-body {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 60px;
    padding-top: 60px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 116px;
    padding: 20px 18px;
  }

  .page-faq .faq-section {
    padding-bottom: 48px;
  }

  .page-faq .faq-section + .faq-section {
    padding-top: 48px;
  }

  .page-faq .faq-item > summary {
    font-size: 17px;
    padding: 17px 22px;
  }

  .page-faq .faq-answer {
    padding: 0 22px 20px 54px;
  }
}
</style>
<<<END>>>
</main>