.page-faq {
  --faq-stick: 88px;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq .breadcrumbs {
  margin-top: clamp(14px, 2.5vw, 24px);
  margin-bottom: clamp(18px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  padding-bottom: clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--hair-soft);
}

.page-faq .faq-hero__main {
  position: relative;
  min-width: 0;
  padding-left: clamp(14px, 2vw, 26px);
}

.page-faq .faq-hero__main::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), rgba(255, 90, 31, 0));
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__mark {
  color: var(--brand);
  box-shadow: inset 0 -0.16em 0 rgba(255, 90, 31, 0.22);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--ink-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
}

.page-faq .faq-hero__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--hair);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(255, 90, 31, 0.16), transparent 58%),
    linear-gradient(160deg, var(--raise), var(--panel) 62%);
}

.page-faq .faq-hero__panel::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  opacity: 0.55;
  background: repeating-linear-gradient(90deg, var(--grid) 0 2px, transparent 2px 10px);
}

.page-faq .faq-hero__panel-cap {
  margin: 0 0 16px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.page-faq .faq-hero__stats {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-hero__stat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px dashed var(--hair-soft);
}

.page-faq .faq-hero__stat:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-hero__num {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__plus {
  font-size: 0.6em;
}

.page-faq .faq-hero__stat-label {
  color: var(--ink-dim);
  font-size: 13.5px;
  line-height: 1.6;
}

/* ---------- 索引 + 问答双栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(30px, 5vw, 60px);
}

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

.page-faq .faq-nav__cap {
  margin: 0 0 14px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.page-faq .faq-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-nav__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--ink-dim);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--brand);
  background: linear-gradient(90deg, rgba(255, 90, 31, 0.16), rgba(255, 90, 31, 0) 88%);
}

.page-faq .faq-nav__num {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.page-faq .faq-nav__count {
  font-size: 11.5px;
  color: var(--ink-dim);
  padding: 1px 7px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
}

.page-faq .faq-nav__note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--hair-soft);
  color: var(--ink-dim);
  font-size: 12.5px;
  line-height: 1.7;
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--hair-soft);
}

.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-faq .faq-group__num {
  margin: 0 0 6px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--brand);
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.18;
  color: var(--ink);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 70ch;
  color: var(--ink-dim);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .faq-group__list {
  display: grid;
  gap: 10px;
}

/* ---------- 可展开问答组 ---------- */
.page-faq .faq-group__list .expand {
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-md);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-group__list .expand:hover {
  border-color: var(--hair);
  background: var(--raise);
}

.page-faq .expand__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 15px 18px;
  border: 0;
  background: none;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  appearance: none;
}

.page-faq .expand__trigger:focus-visible {
  outline: 2px solid var(--brand-soft);
  outline-offset: -2px;
}

.page-faq .expand__idx {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  transition: color 0.2s ease;
}

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

.page-faq .expand__trigger[aria-expanded="true"] .expand__idx {
  color: var(--brand);
}

.page-faq .expand__icon {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  transition: border-color 0.2s ease;
}

.page-faq .expand__icon::before,
.page-faq .expand__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--ink-dim);
  transition: transform 0.2s ease, background-color 0.2s ease;
  transform: translate(-50%, -50%);
}

.page-faq .expand__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .expand__trigger[aria-expanded="true"] .expand__icon {
  border-color: rgba(255, 90, 31, 0.7);
}

.page-faq .expand__trigger[aria-expanded="true"] .expand__icon::before,
.page-faq .expand__trigger[aria-expanded="true"] .expand__icon::after {
  background: var(--brand);
}

.page-faq .expand__trigger[aria-expanded="true"] .expand__icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .expand__panel {
  overflow: hidden;
}

.page-faq .expand__inner {
  position: relative;
  padding: 4px 20px 20px 50px;
}

.page-faq .expand__inner::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 6px;
  bottom: 22px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), rgba(255, 90, 31, 0.12));
}

.page-faq .expand__inner::after {
  content: "";
  position: absolute;
  left: 22px;
  right: 20px;
  top: 0;
  border-top: 1px dashed var(--hair-soft);
}

.page-faq .expand__inner p {
  margin: 0;
  max-width: 64ch;
  color: var(--ink-body);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-num {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-faq .expand__inner p a,
.page-faq .faq-group__lead a,
.page-faq .faq-foot__text a {
  color: var(--brand-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .expand__inner p a:hover,
.page-faq .faq-group__lead a:hover,
.page-faq .faq-foot__text a:hover {
  color: var(--brand);
}

/* ---------- 分组配图 ---------- */
.page-faq .faq-figure {
  margin: 16px 0 4px;
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--raise);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 16px 12px;
  border-top: 1px dashed var(--hair-soft);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

/* ---------- 页尾引导 ---------- */
.page-faq .faq-foot {
  margin-top: clamp(36px, 6vw, 72px);
}

.page-faq .faq-foot__box {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--hair-soft);
  border-radius: var(--r-lg);
  background:
    linear-gradient(120deg, rgba(255, 90, 31, 0.12), rgba(255, 90, 31, 0) 62%),
    var(--panel);
}

.page-faq .faq-foot__cap {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-dim);
}

.page-faq .faq-foot__text {
  margin: 0;
  max-width: 78ch;
  color: var(--ink-body);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(30px, 5vw, 72px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: var(--faq-stick);
    padding-right: 8px;
    border-right: 1px solid var(--hair-soft);
  }
}

@media (max-width: 959px) {
  .page-faq .faq-nav__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: none;
  }

  .page-faq .faq-nav__list::-webkit-scrollbar {
    display: none;
  }

  .page-faq .faq-nav__link {
    grid-template-columns: auto auto;
    flex: 0 0 auto;
    padding: 8px 14px;
    border: 1px solid var(--hair-soft);
    border-radius: var(--r-pill);
    background: var(--panel);
    white-space: nowrap;
  }

  .page-faq .faq-nav__count {
    display: none;
  }

  .page-faq .faq-nav__note {
    margin-top: 12px;
  }
}

@media (max-width: 560px) {
  .page-faq .expand__trigger {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 10px;
    padding: 14px 16px;
    font-size: 15px;
  }

  .page-faq .expand__icon {
    display: none;
  }

  .page-faq .expand__inner {
    padding: 4px 16px 18px 38px;
  }

  .page-faq .expand__inner::before {
    left: 16px;
  }

  .page-faq .expand__inner::after {
    left: 16px;
    right: 16px;
  }
}