.page-faq {
  --faq-sticky-top: 104px;
  display: block;
  background: var(--deep);
}

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

.page-faq .faq-crumbs__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 16px;
  padding-bottom: 16px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: clamp(48px, 8vw, 108px) 0 clamp(52px, 7vw, 96px);
  color: var(--paper);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-faq .faq-hero__aside-text {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 17em;
  font-size: clamp(30px, 5vw, 54px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: var(--fs-lede);
  line-height: 1.75;
  color: rgba(232, 241, 247, 0.8);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px 28px;
}

.page-faq .faq-hero__facts li {
  display: grid;
  gap: 6px;
}

.page-faq .faq-hero__num {
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-hero__cap {
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(18px, 2.4vw, 32px);
    align-items: start;
  }

  .page-faq .faq-hero__aside {
    grid-column: 1 / span 3;
    padding-top: 8px;
  }

  .page-faq .faq-hero__body {
    grid-column: 5 / span 7;
  }
}

/* ---------- 问答区 ---------- */

.page-faq .faq-board {
  padding: clamp(44px, 6vw, 92px) 0 clamp(64px, 8vw, 120px);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-board__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

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

.page-faq .faq-side__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-side__link {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line-ink);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.page-faq .faq-side__link .mono {
  font-size: 11px;
  color: var(--steel);
  transition: color var(--dur) ease;
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--mid);
  border-bottom-color: var(--cyan);
}

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

@media (min-width: 960px) {
  .page-faq .faq-board__grid {
    grid-template-columns: 228px minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 84px);
    align-items: start;
  }

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

.page-faq .faq-side__figure {
  margin: 28px 0 0;
}

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

.page-faq .faq-lead {
  margin: 0 0 clamp(28px, 4vw, 44px);
}

/* 筛选 */

.page-faq .faq-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-ink);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  border: 0;
  background: none;
}

.page-faq .faq-filter .filter-chip {
  cursor: pointer;
  font-family: var(--font-sans);
  transition: color var(--dur) ease, border-color var(--dur) ease, background-color var(--dur) ease;
}

.page-faq .faq-filter .filter-chip:hover,
.page-faq .faq-filter .filter-chip:focus-visible {
  border-color: var(--cyan);
  color: var(--mid);
}

.page-faq .faq-filter .filter-chip[aria-pressed="true"] {
  background: var(--haze);
  border-color: var(--cyan);
  color: var(--deep);
}

.page-faq .faq-count {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* 分组 */

.page-faq .faq-group {
  padding: clamp(26px, 3.4vw, 44px) clamp(16px, 2.4vw, 34px);
  border-top: 1px solid var(--line-ink);
  border-radius: var(--radius);
  scroll-margin-top: var(--faq-sticky-top);
}

.page-faq .faq-group:nth-of-type(even) {
  background: var(--mist);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  margin-bottom: 10px;
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 900;
  line-height: 1.32;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

@media (min-width: 700px) {
  .page-faq .faq-group__head {
    grid-template-columns: 3.2em minmax(0, 1fr);
    column-gap: 16px;
    align-items: baseline;
  }

  .page-faq .faq-group__no {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-group__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-group__note {
    grid-column: 2;
    grid-row: 2;
  }
}

/* 折叠条目 */

.page-faq .faq-item {
  border-top: 1px solid var(--line-ink);
}

.page-faq .faq-item:first-child {
  border-top: 0;
}

.page-faq .faq-q {
  display: block;
}

.page-faq .faq-q__summary {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr) 1.6em;
  gap: 10px;
  align-items: baseline;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q__summary::marker {
  content: "";
}

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

.page-faq .faq-q__no {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-q__title {
  margin: 0;
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--dur) ease;
}

.page-faq .faq-q__summary:hover .faq-q__title {
  color: var(--mid);
}

.page-faq .faq-q__mark {
  position: relative;
  justify-self: end;
  align-self: center;
  width: 14px;
  height: 14px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--steel);
  transform: translateY(-50%);
  transition: transform var(--dur) ease, background-color var(--dur) ease;
}

.page-faq .faq-q__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-q[open] .faq-q__mark::before,
.page-faq .faq-q[open] .faq-q__mark::after {
  background: var(--cyan);
}

.page-faq .faq-q[open] .faq-q__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-q[open] .faq-q__title {
  color: var(--deep);
}

.page-faq .faq-q__body {
  margin: 0 0 20px 0;
  padding: 0 0 0 14px;
  max-width: 42em;
  border-left: 1px solid var(--line-ink);
  transition: border-color var(--dur) ease;
}

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

@media (min-width: 640px) {
  .page-faq .faq-q__body {
    margin-left: calc(2.6em + 10px);
    padding-left: 18px;
  }
}

.page-faq .faq-q__body p {
  margin: 0 0 14px;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink-soft);
}

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

.page-faq .faq-q__link {
  margin-top: 6px;
  font-size: 14px;
}

/* ---------- 收尾 ---------- */

.page-faq .faq-outro {
  padding: clamp(52px, 7vw, 100px) 0;
  color: var(--paper);
}

.page-faq .faq-outro__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .faq-outro h2 {
  margin: 0 0 14px;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-outro p {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: var(--lh-body);
  color: rgba(232, 241, 247, 0.78);
}

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

@media (min-width: 880px) {
  .page-faq .faq-outro__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(32px, 5vw, 72px);
    align-items: center;
  }

  .page-faq .faq-outro__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 1ms !important;
  }
}