.page-faq {
  --faq-gap: 0.5rem;
  --faq-code: rgba(20, 24, 31, 0.06);
  --faq-dark-soft: rgba(244, 239, 230, 0.7);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--navy);
  color: var(--warm);
  padding: calc(var(--header-h) + 2.25rem) 0 2.5rem;
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.3;
  filter: saturate(0.55) contrast(1.05);
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 85% at 10% 8%, rgba(47, 216, 208, 0.18), transparent 62%),
    linear-gradient(180deg, rgba(11, 27, 51, 0.7), rgba(11, 27, 51, 0.97) 74%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumbs,
.page-faq .faq-hero .breadcrumbs__list,
.page-faq .faq-hero .breadcrumbs__item {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(244, 239, 230, 0.58);
}

.page-faq .faq-hero .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.page-faq .faq-hero .breadcrumbs__item + .breadcrumbs__item::before {
  content: " / ";
  color: rgba(244, 239, 230, 0.35);
}

.page-faq .faq-hero .breadcrumbs__item a {
  color: rgba(244, 239, 230, 0.58);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumbs__item a:hover {
  color: var(--cyan);
}

.page-faq .faq-hero .eyebrow {
  margin-top: 1.1rem;
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 0;
  max-width: 18ch;
  color: var(--warm);
}

.page-faq .faq-hero__lead {
  margin: 1rem 0 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.82);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__scale {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.75rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-hero__fact {
  font-size: 13px;
  color: rgba(244, 239, 230, 0.64);
}

.page-faq .faq-hero__fact .num {
  font-size: 1.3rem;
  color: var(--cyan);
  margin-right: 0.35rem;
  vertical-align: -2px;
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-overview {
  padding: 2.75rem 0 3rem;
}

.page-faq .faq-overview__head {
  max-width: 52ch;
  margin-bottom: 2rem;
}

.page-faq .faq-overview__head .eyebrow {
  margin-bottom: 0.5rem;
}

.page-faq .faq-overview__head h2 {
  margin: 0;
}

.page-faq .faq-overview__intro {
  margin: 0.85rem 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .faq-overview__grid {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-overview__frame {
  max-width: 380px;
  border: 1px solid var(--line-strong);
  background: var(--navy);
}

.page-faq .faq-overview__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.page-faq .faq-legend {
  display: block;
  width: 100%;
  max-width: 300px;
  height: auto;
  margin-top: 1rem;
}

.page-faq .faq-overview__note {
  margin: 0.6rem 0 0;
  max-width: 40ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .faq-jump {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-jump__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-jump__link {
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr) auto;
  gap: 0.9rem;
  align-items: start;
  padding: 0.9rem 0.25rem 0.9rem 0;
  text-decoration: none;
  color: var(--ink);
  transition: background var(--ease), padding-left var(--ease);
}

.page-faq .faq-jump__link:hover {
  background: var(--faq-code);
  padding-left: 0.6rem;
}

.page-faq .faq-jump__link[data-active] {
  background: rgba(47, 216, 208, 0.12);
  padding-left: 0.6rem;
}

.page-faq .faq-jump__bar {
  display: block;
  width: 4px;
  height: 100%;
  min-height: 26px;
  background: var(--rock);
}

.page-faq .faq-jump__item:nth-child(1) .faq-jump__bar { background: var(--cyan); }
.page-faq .faq-jump__item:nth-child(2) .faq-jump__bar { background: var(--orange); }
.page-faq .faq-jump__item:nth-child(3) .faq-jump__bar { background: var(--moss); }
.page-faq .faq-jump__item:nth-child(4) .faq-jump__bar { background: var(--clay); }
.page-faq .faq-jump__item:nth-child(5) .faq-jump__bar { background: var(--rock); }

.page-faq .faq-jump__body {
  display: block;
  min-width: 0;
}

.page-faq .faq-jump__name {
  display: block;
  font-size: 1.0625rem;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.page-faq .faq-jump__desc {
  display: block;
  margin-top: 0.25rem;
  font-size: 13px;
  line-height: 1.65;
  color: var(--rock);
}

.page-faq .faq-jump__meta {
  font-size: 12px;
  color: var(--clay);
  padding-top: 0.35rem;
  white-space: nowrap;
}

/* ---------- 分组区块 ---------- */
.page-faq .faq-group {
  padding: 2.5rem 0;
}

.page-faq .faq-group__inner {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-group__head h2 {
  margin: 0.5rem 0 0;
}

.page-faq .faq-group__lead {
  margin: 0.85rem 0 0;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock);
}

.page-faq .faq-group__count {
  margin: 0.9rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-faq .faq-group__count .num {
  font-size: 1.5rem;
  margin-right: 0.3rem;
  vertical-align: -3px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line-strong);
  padding-top: 0.75rem;
}

.page-faq .faq-item {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--line-strong);
  transition: border-color var(--ease);
}

.page-faq .section--paper .faq-item {
  background: var(--warm);
}

.page-faq .faq-item + .faq-item {
  margin-top: var(--faq-gap);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan-deep);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 2.5rem 0.9rem 0.9rem;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  transition: background var(--ease);
}

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

.page-faq .faq-item__q:hover {
  background: var(--faq-code);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0.95rem;
  top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--rock);
  transition: color var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
  color: var(--cyan-deep);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--clay);
  padding-top: 0.2rem;
}

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

.page-faq .faq-item__a {
  padding: 0 1rem 1.05rem 2.6rem;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .faq-item__a p:first-child {
  color: var(--ink);
}

.page-faq .faq-item__a p + p {
  margin-top: 0.6rem;
}

.page-faq .faq-item__a a {
  color: var(--clay);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 回到分组 ---------- */
.page-faq .faq-totop {
  background: var(--warm);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-totop__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.page-faq .faq-totop__scale {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--rock);
}

.page-faq .faq-totop__link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid var(--cyan-deep);
}

.page-faq .faq-totop__link:hover {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

/* ---------- 仍需帮助 ---------- */
.page-faq .faq-help {
  background: var(--navy);
  color: var(--warm);
  padding: 2.75rem 0 3rem;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-help h2 {
  margin: 0.5rem 0 0;
  color: var(--warm);
}

.page-faq .faq-help__lead {
  margin: 0.9rem 0 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-dark-soft);
}

.page-faq .faq-help__list {
  margin: 1.5rem 0 0;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-help__row {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-help__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(244, 239, 230, 0.55);
  padding-top: 0.2rem;
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--warm);
  word-break: break-word;
}

.page-faq .faq-help__mail {
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-faq .faq-help__aside {
  background: var(--navy-2);
  border: 1px solid var(--line-cyan);
  padding: 1.25rem 1.15rem 1.35rem;
}

.page-faq .faq-help__aside-title {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--warm);
}

.page-faq .faq-help__aside-text {
  margin: 0.65rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.7);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.15rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 3.25rem) 0 3.25rem;
  }

  .page-faq .faq-item__a {
    padding-right: 1.75rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-overview {
    padding: 4rem 0;
  }

  .page-faq .faq-overview__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-group {
    padding: 4rem 0;
  }

  .page-faq .faq-group__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 2.75rem;
    align-items: start;
  }

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

  .page-faq .faq-help {
    padding: 4rem 0;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 3rem;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero h1 {
    max-width: 16ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-totop__link {
    transition: none;
  }
}