.page-faq {
  --faq-rail: 252px;
  --faq-grid-line: rgba(62, 110, 126, 0.10);
  background: var(--pearl);
  color: var(--ink);
}

/* 面包屑 */
.page-faq .faq-crumbs {
  padding: clamp(16px, 3vw, 30px) 0 0;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(18px, 3.5vw, 36px) 0 clamp(36px, 6vw, 76px);
  background-image:
    linear-gradient(to right, var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  color: var(--sea);
  letter-spacing: 0.3em;
  font-size: 12px;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 13em;
  font-size: clamp(34px, 6.4vw, 70px);
  line-height: 1.08;
  letter-spacing: 0.06em;
  font-weight: 800;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: rgba(20, 35, 43, 0.82);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-hero__figure .figure-media,
.page-faq .faq-help__figure .figure-media {
  min-width: 0;
}

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

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

/* 主体两栏 */
.page-faq .faq-body {
  padding: clamp(36px, 5.5vw, 78px) 0 clamp(48px, 8vw, 104px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

/* 左侧索引 */
.page-faq .faq-index {
  min-width: 0;
  border: 2px solid var(--ink);
  background: var(--white);
  padding: 16px 16px 18px;
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--sea);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--coral);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--sea);
  background: var(--mist);
}

.page-faq .faq-index__foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-index__hint {
  margin: 0 0 6px;
  font-size: 13px;
  color: rgba(20, 35, 43, 0.66);
}

.page-faq .faq-index__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--sea-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--coral);
  padding-bottom: 2px;
}

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

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    padding: 20px 18px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list a {
    width: 100%;
    border-radius: 6px;
    white-space: normal;
  }
}

/* 问题分组 */
.page-faq .faq-panels {
  min-width: 0;
}

.page-faq .faq-topic {
  scroll-margin-top: 110px;
}

.page-faq .faq-topic + .faq-topic {
  margin-top: clamp(34px, 5vw, 56px);
}

.page-faq .faq-topic__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.page-faq .faq-topic__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--coral);
}

.page-faq .faq-topic__title {
  margin: 0;
  font-size: clamp(21px, 2.9vw, 30px);
  letter-spacing: 0.04em;
  line-height: 1.3;
}

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

/* 手风琴 */
.page-faq .qa {
  border-top: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 2vw, 18px);
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__n {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--coral);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15px, 1.7vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.01em;
  overflow-wrap: break-word;
}

.page-faq .qa__q:hover .qa__text {
  color: var(--sea-deep);
}

.page-faq .qa__sign {
  flex: 0 0 auto;
  position: relative;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  transition: background-color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--sea);
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .qa__sign::before {
  width: 10px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .qa__sign::after {
  width: 1.5px;
  height: 10px;
  transform: translate(-50%, -50%);
}

.page-faq .qa[open] .qa__sign {
  background: var(--coral);
  border-color: var(--coral);
}

.page-faq .qa[open] .qa__sign::before,
.page-faq .qa[open] .qa__sign::after {
  background: var(--ink);
}

.page-faq .qa[open] .qa__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__a {
  padding: 0 0 20px clamp(26px, 3vw, 42px);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(20, 35, 43, 0.82);
}

/* 仍未解决 */
.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  padding: clamp(44px, 7vw, 92px) 0;
  background-color: var(--deep);
  background-image:
    linear-gradient(to right, rgba(246, 244, 238, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(246, 244, 238, 0.07) 1px, transparent 1px);
  background-size: 80px 80px;
  color: var(--pearl);
  scroll-margin-top: 90px;
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-help__eyebrow {
  margin: 0 0 12px;
  color: var(--coral);
  letter-spacing: 0.3em;
  font-size: 12px;
}

.page-faq .faq-help__title {
  margin: 0;
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1.25;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-faq .faq-help__text {
  margin: 16px 0 0;
  max-width: 32em;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(246, 244, 238, 0.82);
}

.page-faq .faq-help__list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  max-width: 34em;
}

.page-faq .faq-help__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 11px 0;
  border-top: 1px solid rgba(246, 244, 238, 0.2);
}

.page-faq .faq-help__list li:last-child {
  border-bottom: 1px solid rgba(246, 244, 238, 0.2);
}

.page-faq .faq-help__k {
  flex: 0 0 44px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--coral);
}

.page-faq .faq-help__list a,
.page-faq .faq-help__v {
  color: var(--pearl);
  font-size: 15px;
  overflow-wrap: anywhere;
}

.page-faq .faq-help__list a {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-help__list a:hover {
  color: var(--coral);
}

.page-faq .faq-help__note {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(246, 244, 238, 0.7);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-help__btn-line {
  border-color: rgba(246, 244, 238, 0.65);
  color: var(--pearl);
}

.page-faq .faq-help__figure {
  margin: 0;
  border: 2px solid rgba(246, 244, 238, 0.42);
  background: var(--indigo);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.28);
}

.page-faq .faq-help__figure .figure-caption {
  color: rgba(246, 244, 238, 0.72);
}

@media (min-width: 900px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__sign,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
}