.page-faq {
  --faq-sticky: 104px;
  --faq-gap: clamp(28px, 5vw, 60px);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  padding-block: clamp(26px, 4.5vw, 54px) clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero__text {
  max-width: 52rem;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hero__media {
  margin: clamp(24px, 4vw, 44px) 0 0;
  aspect-ratio: 1600 / 560;
  background: var(--ink-900);
}

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 正文区 ===== */
.page-faq .faq-body {
  padding-block: clamp(20px, 3vw, 36px) clamp(44px, 7vw, 84px);
}

.page-faq .faq-scope > .filter-bar {
  margin-bottom: clamp(24px, 4vw, 40px);
}

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

/* ===== 左侧分类索引 ===== */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 16px 18px 18px;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--cold);
  text-decoration: none;
  transition: color .16s var(--ease);
}

.page-faq .faq-index__link .num {
  font-size: 12px;
  color: var(--slate);
  transition: color .16s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-index__link:hover .num,
.page-faq .faq-index__link:focus-visible .num {
  color: var(--cyan);
}

/* ===== 分组 ===== */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 6vw, 68px);
  padding-top: clamp(24px, 4vw, 42px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-list {
  margin-top: clamp(10px, 2vw, 18px);
}

/* ===== 问答条目 ===== */
.page-faq .faq-item {
  border-top: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  padding-left: 16px;
  transition: border-left-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-list > .faq-item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: rgba(0, 224, 198, .045);
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 10px 15px 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.5;
  color: var(--cold);
}

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

.page-faq .faq-item__label {
  flex: 1 1 auto;
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2212";
}

.page-faq .faq-item__a {
  padding: 0 10px 20px 0;
  max-width: 42rem;
}

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

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

.page-faq .faq-num {
  font-family: var(--font-mono);
  font-size: .95em;
  color: var(--gold);
  border-bottom: 1px solid rgba(226, 166, 90, .55);
  padding-bottom: 1px;
}

/* ===== 境外分组的分栏 ===== */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 32px);
}

.page-faq .faq-side {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 14px;
}

.page-faq .faq-side .media-frame {
  margin: 0;
  aspect-ratio: 1 / 1;
  background: var(--ink-900);
}

.page-faq .faq-side .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .tz-ring {
  display: block;
  width: 100%;
  max-width: 190px;
  height: auto;
  margin: 18px auto 0;
}

.page-faq .tz-ring__legend {
  display: grid;
  gap: 7px;
  margin-top: 14px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
}

.page-faq .tz-ring__legend span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .tz-ring__dot {
  display: inline-block;
  flex: none;
  width: 9px;
  height: 9px;
}

.page-faq .tz-ring__dot--eu { background: var(--cyan); }
.page-faq .tz-ring__dot--sa { background: var(--gold); }
.page-faq .tz-ring__dot--as { background: var(--signal); }

/* ===== 联系信息与收尾 ===== */
.page-faq .faq-contact {
  margin-top: clamp(22px, 3vw, 32px);
  padding: clamp(18px, 3vw, 26px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--signal);
  background: var(--surface);
}

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

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-contact__val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--cold);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-faq a.faq-contact__val:hover,
.page-faq a.faq-contact__val:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  max-width: 44rem;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-cta {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 28px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(115deg, rgba(0, 224, 198, .12), rgba(10, 26, 42, 0) 62%);
}

.page-faq .faq-cta__text {
  margin: 0;
  flex: 1 1 20rem;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cold);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== 平板与桌面 ===== */
@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-index__list {
    display: block;
    margin-top: 12px;
  }

  .page-faq .faq-index__list li + li {
    border-top: 1px solid var(--line-soft);
  }

  .page-faq .faq-index__link {
    padding: 10px 0;
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 264px;
    align-items: start;
  }
}

/* ===== 窄屏收敛 ===== */
@media (max-width: 520px) {
  .page-faq .faq-item {
    padding-left: 12px;
  }

  .page-faq .faq-item__q {
    gap: 12px;
    padding: 13px 6px 13px 0;
  }

  .page-faq .faq-item__a {
    padding-right: 4px;
  }

  .page-faq .faq-index__list {
    gap: 4px 14px;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 1 1 auto;
  }
}