.page-faq {
  --faq-gap: 24px;
  --faq-rail-w: 208px;
  --faq-side-w: 244px;
  display: block;
}

.page-faq .faq-crumbs {
  margin-bottom: 6px;
}

/* ---------- 页头 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 46px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  opacity: .55;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: center;
  margin-top: 20px;
}

.page-faq .faq-hero__eyebrow {
  color: var(--mint);
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-size: clamp(27px, 4vw, 45px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--white);
  margin: 12px 0 0;
  max-width: 18em;
}

.page-faq .faq-hero__lede {
  color: var(--on-dark);
  font-size: 16px;
  line-height: 1.78;
  max-width: 34em;
  margin: 14px 0 0;
}

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

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: linear-gradient(140deg, rgba(22, 53, 127, .8), rgba(6, 13, 36, .95));
}

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

/* ---------- 主体三栏 ---------- */

.page-faq .faq-main {
  padding: 40px 0 62px;
}

.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

/* ---------- 左栏：搜索 + 索引 ---------- */

.page-faq .faq-rail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .faq-search {
  display: block;
  padding: 13px 13px 15px;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--line-light);
}

.page-faq .faq-search__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--slate);
  margin-bottom: 8px;
}

.page-faq .faq-search__input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-light);
  background: var(--paper);
  color: var(--on-light);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  outline: none;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: var(--slate);
  opacity: .8;
}

.page-faq .faq-search__input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(22, 53, 127, .18);
}

.page-faq .faq-index__head {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--slate);
  margin: 0 0 10px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  color: var(--on-light);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--white);
  border-color: var(--line-green);
  color: var(--ink);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 1px;
  background: var(--white);
}

.page-faq .faq-index__no {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: .02em;
}

.page-faq .faq-index__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-faq .faq-index__count {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--slate);
}

.page-faq .faq-index__link:hover .faq-index__no {
  color: var(--ink);
}

/* ---------- 中栏：问答 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 18px);
  margin-bottom: 40px;
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 6px 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-light);
  margin-bottom: 18px;
}

.page-faq .faq-group__no {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  background: var(--ink);
  padding: 3px 10px;
  border-radius: var(--r-pill);
  letter-spacing: .04em;
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.4vw, 29px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-group__desc {
  grid-column: 2;
  grid-row: 2;
  color: var(--slate);
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0;
  max-width: 40em;
}

.page-faq .faq-group__figure {
  margin: 0 0 18px;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line-light);
  background: linear-gradient(160deg, rgba(22, 53, 127, .1), rgba(56, 216, 232, .1));
}

.page-faq .faq-group__figure .media__caption {
  display: block;
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
  background: var(--white);
}

.page-faq .faq-item {
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  background: var(--white);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

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

.page-faq .faq-item:hover {
  border-color: var(--line-green);
  transform: translateY(-1px);
  box-shadow: 0 14px 26px -22px rgba(6, 13, 36, .75);
}

.page-faq .faq-item:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px rgba(22, 53, 127, .2);
}

.page-faq .faq-item__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
  padding: 15px 16px;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
}

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

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

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  color: var(--on-light);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-item__body p {
  margin: 0;
}

/* ---------- 右栏：快捷入口 ---------- */

.page-faq .faq-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-side__head {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--slate);
  margin: 0;
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 13px 14px 15px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-light);
  background: var(--white);
  text-decoration: none;
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}

.page-faq .faq-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-green);
  box-shadow: 0 16px 28px -22px rgba(6, 13, 36, .8);
}

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

.page-faq .faq-card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}

.page-faq .faq-card__desc {
  font-size: 13px;
  line-height: 1.62;
  color: var(--slate);
}

.page-faq .faq-side__note {
  padding: 16px 16px 18px;
  border-radius: var(--r-md);
  background: linear-gradient(155deg, var(--ink), var(--blue));
  color: var(--on-dark);
}

.page-faq .faq-side__note p {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
}

.page-faq .faq-side__note-sub {
  display: block;
  margin: 6px 0 14px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(217, 226, 242, .82);
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 32px 0 56px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 22px 30px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--bar-h) + 18px);
    align-self: start;
  }

  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-index__name {
    white-space: normal;
  }

  .page-faq .faq-side {
    grid-column: 1 / -1;
  }

  .page-faq .faq-side__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-side__note {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 18px;
  }

  .page-faq .faq-side__note p {
    flex: 0 0 auto;
  }

  .page-faq .faq-side__note-sub {
    flex: 1 1 220px;
    margin: 0;
  }

  .page-faq .faq-item__head {
    padding: 16px 20px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 18px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 42px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr) var(--faq-side-w);
    gap: 26px 32px;
  }

  .page-faq .faq-side {
    grid-column: auto;
    position: sticky;
    top: calc(var(--bar-h) + 18px);
    align-self: start;
  }

  .page-faq .faq-side__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-side__note {
    display: block;
    flex-wrap: nowrap;
  }

  .page-faq .faq-side__note-sub {
    margin: 6px 0 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-card,
  .page-faq .faq-index__link,
  .page-faq .faq-search__input {
    transition: none;
  }

  .page-faq .faq-item:hover,
  .page-faq .faq-card:hover {
    transform: none;
  }
}