.page-faq {
  --faq-panel: var(--c-cabin);
  --faq-hair: var(--c-line);
  background: var(--c-void);
  color: var(--c-stardust);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(40px, 7vw, 96px)) 0 clamp(32px, 5vw, 64px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 78% at 80% 8%, rgba(59, 42, 107, 0.58), transparent 68%),
    radial-gradient(36% 58% at 6% 92%, rgba(53, 224, 208, 0.10), transparent 70%);
}

.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  line-height: 0.94;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 46ch;
  color: var(--c-body);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-hero__media {
  border-top: 1px solid var(--faq-hair);
  padding-top: 14px;
}

/* ---------- 索引与问答 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 4vw, 56px);
}

.page-faq .faq-body__head {
  max-width: 62ch;
}

.page-faq .faq-body__note {
  margin-top: 10px;
  font-size: 15px;
}

.page-faq .faq-filter {
  margin: clamp(20px, 3vw, 32px) 0 clamp(28px, 4vw, 48px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 46px);
}

.page-faq .faq-index {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 0 10px;
  scrollbar-width: none;
}

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

.page-faq .faq-index .anchor-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 12px;
  border: 1px solid var(--c-orbit);
  border-radius: var(--radius);
  color: var(--c-observ);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-faq .faq-index .anchor-index__link span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-line);
  transition: color 160ms ease-out;
}

.page-faq .faq-index .anchor-index__link:hover,
.page-faq .faq-index .anchor-index__link:focus-visible,
.page-faq .faq-index .anchor-index__link.is-active {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .faq-index .anchor-index__link.is-active span,
.page-faq .faq-index .anchor-index__link:hover span {
  color: var(--c-cyan);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 62px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-stardust);
}

.page-faq .faq-group__tag {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-observ);
  white-space: nowrap;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  border-top: 0;
}

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

.page-faq .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  background: none;
  border: 0;
  color: var(--c-stardust);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: color 160ms ease-out;
}

.page-faq .accordion__trigger:hover .accordion__q {
  color: var(--c-cyan);
}

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

.page-faq .accordion__idx {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-observ);
}

.page-faq .accordion__q {
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 500;
  line-height: 1.5;
  transition: color 160ms ease-out;
}

.page-faq .accordion__mark {
  position: relative;
  flex: 0 0 auto;
  align-self: center;
  margin-left: auto;
  width: 13px;
  height: 13px;
  transition: transform 200ms ease-out;
}

.page-faq .accordion__mark::before,
.page-faq .accordion__mark::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
}

.page-faq .accordion__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-faq .accordion__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
}

.page-faq .accordion__item[data-open] .accordion__mark {
  transform: rotate(45deg);
}

.page-faq .accordion__item[data-open] .accordion__q {
  color: var(--c-cyan);
}

.page-faq .accordion__panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 200ms ease-out;
}

.page-faq .accordion__body {
  padding: 0 0 clamp(18px, 2.4vw, 26px) 40px;
}

.page-faq .accordion__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-body);
}

.page-faq .accordion__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.45);
}

.page-faq .accordion__body a:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 自助排查 ---------- */
.page-faq .faq-fix__lede {
  max-width: 54ch;
  margin-top: 12px;
}

.page-faq .faq-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 46px);
  margin-top: clamp(26px, 3.6vw, 48px);
}

.page-faq .faq-fix__list {
  display: flex;
  flex-direction: column;
  gap: clamp(22px, 3vw, 34px);
  min-width: 0;
}

.page-faq .faq-fix__item {
  padding-left: clamp(16px, 2vw, 24px);
  border-left: 1px solid var(--c-orbit);
}

.page-faq .faq-fix__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-orange);
}

.page-faq .faq-fix__title {
  margin: 0 0 12px;
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 600;
  color: var(--c-stardust);
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  margin-bottom: 9px;
  padding-left: 28px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-body);
}

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

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-cyan);
}

.page-faq .faq-fix__media {
  align-self: start;
}

/* ---------- 联系收尾 ---------- */
.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: end;
}

.page-faq .faq-help__copy {
  margin-top: 14px;
  max-width: 56ch;
  color: var(--c-body);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 移动端收窄 ---------- */
@media (max-width: 640px) {
  .page-faq .accordion__body {
    padding-left: 0;
  }

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

  .page-faq .faq-group__head {
    gap: 10px;
  }
}

/* ---------- 桌面端栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: 1.15fr 1fr;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: 1fr auto;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--c-orbit);
  }

  .page-faq .faq-index .anchor-index__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 10px 0 10px 15px;
  }

  .page-faq .faq-index .anchor-index__link:hover,
  .page-faq .faq-index .anchor-index__link:focus-visible,
  .page-faq .faq-index .anchor-index__link.is-active {
    border-left-color: var(--c-orange);
    color: var(--c-cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__panel,
  .page-faq .accordion__mark,
  .page-faq .accordion__q,
  .page-faq .faq-index .anchor-index__link {
    transition: none;
  }
}