.page-faq {
  --faq-line: rgba(46, 74, 63, .75);
  padding-bottom: calc(var(--bar) + 36px);
}

.page-faq .breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 26px;
}

.page-faq .faq-hero__head {
  border-left: 3px solid var(--green);
  padding-left: 18px;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 7.6vw, 74px);
  font-weight: 700;
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-family: var(--font-serif);
  font-size: clamp(16px, 2.3vw, 20px);
  line-height: 1.68;
  color: var(--paper);
  opacity: .88;
}

.page-faq .faq-hero__figure {
  margin: 28px 0 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 5;
  object-fit: cover;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 分类索引 + 问答主体 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-top: 40px;
}

.page-faq .faq-index {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--faq-line);
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: color .16s ease, transform .16s ease;
}

.page-faq .faq-index__list > li:first-child .faq-index__link {
  border-top: 0;
}

.page-faq .faq-index__link::before {
  content: "";
  flex: 0 0 16px;
  height: 2px;
  background: var(--line);
  transition: background .16s ease;
}

.page-faq .faq-index__link:hover {
  color: var(--cyan);
  transform: translateX(4px);
}

.page-faq .faq-index__link:hover::before {
  background: var(--cyan);
}

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

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-index__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 181, .35);
}

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

.page-faq .faq-group {
  scroll-margin-top: 108px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
  padding-top: 36px;
  border-top: 2px solid var(--line);
}

/* ---------- 分组配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 18px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
  overflow: hidden;
}

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

.page-faq .faq-figure .media__caption {
  padding: 10px 14px;
  border-top: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin-top: 14px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color .16s ease, box-shadow .16s ease;
}

.page-faq .qa[open] {
  border-color: var(--orange);
  box-shadow: 4px 4px 0 rgba(255, 138, 61, .18);
}

.page-faq .qa__q {
  position: relative;
  display: block;
  padding: 15px 48px 15px 16px;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--cyan);
  transition: color .16s ease;
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--orange);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .qa__a {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa__a p + p {
  margin-top: 10px;
}

.page-faq .qa__a strong {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 14.5px;
  letter-spacing: .04em;
  color: var(--orange);
}

.page-faq .qa__more a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 181, .38);
}

.page-faq .qa__more a:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 末尾引导 ---------- */
.page-faq .faq-callout {
  margin-top: 46px;
  padding: 22px 20px;
  display: grid;
  gap: 12px;
  border: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--soft);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-callout__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-callout__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-callout .btn {
  justify-self: start;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 22px;
  }

  .page-faq .faq-index__list > li:nth-child(2) .faq-index__link {
    border-top: 0;
  }

  .page-faq .faq-callout {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 24px 26px;
  }

  .page-faq .faq-callout__title,
  .page-faq .faq-callout__text {
    grid-column: 1;
  }

  .page-faq .faq-callout .btn {
    grid-column: 2;
    grid-row: 1 / span 2;
    justify-self: end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding-top: 34px;
  }

  .page-faq .faq-hero__head {
    max-width: 62ch;
    padding-left: 24px;
  }

  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: block;
  }

  .page-faq .faq-index__list > li:nth-child(2) .faq-index__link {
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .qa__q {
    font-size: 16.5px;
    padding: 17px 52px 17px 18px;
  }

  .page-faq .qa__a {
    padding: 16px 18px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}