.page-faq {
  --faq-measure: 780px;
  --faq-gutter: 20px;
  --faq-rule: rgba(217, 169, 78, 0.42);
  display: block;
  background: var(--ink-night);
  color: var(--paper);
  padding-top: 104px;
  padding-bottom: 0;
}

.page-faq .faq-crumbs {
  margin-bottom: 34px;
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: 72px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-title {
  font-weight: 300;
  font-size: clamp(36px, 7.2vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  margin: 14px 0 20px;
  color: var(--paper);
  max-width: 14em;
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--note);
}

.page-faq .faq-hero-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--board);
  aspect-ratio: 1400 / 600;
  clip-path: polygon(0 0, calc(100% - 44px) 0, 100% 44px, 100% 100%, 0 100%);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06) brightness(0.92);
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 31, 26, 0.18) 0%, rgba(16, 42, 35, 0.68) 64%, rgba(5, 13, 11, 0.94) 100%);
}

@media (min-width: 980px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
    gap: 60px;
  }

  .page-faq .faq-hero-copy {
    padding-right: 12px;
  }
}

/* ---------- 索引轨道 ---------- */
.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1200px) {
  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    gap: 13px;
    position: fixed;
    top: 196px;
    left: 20px;
    z-index: 4;
  }

  .page-faq .faq-rail a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--note);
    background: none;
    border: 0;
    padding: 0;
    transition: color 160ms var(--ease);
  }

  .page-faq .faq-rail .rail-num {
    font-family: var(--mono);
    font-variant-numeric: tabular-nums;
    color: var(--gold);
    font-size: 11px;
  }

  .page-faq .faq-rail .rail-tick {
    display: block;
    width: 14px;
    height: 1px;
    background: var(--sketch);
    transition: background-color 160ms var(--ease), width 160ms var(--ease);
  }

  .page-faq .faq-rail .rail-label {
    opacity: 0;
    transition: opacity 160ms var(--ease), color 160ms var(--ease);
  }

  .page-faq .faq-rail a:hover .rail-label,
  .page-faq .faq-rail a:focus-visible .rail-label,
  .page-faq .faq-rail a[aria-current="true"] .rail-label {
    opacity: 1;
    color: var(--gold-soft);
  }

  .page-faq .faq-rail a[aria-current="true"] .rail-tick {
    width: 24px;
    background: var(--cyan);
  }
}

@media (min-width: 1480px) {
  .page-faq .faq-rail {
    left: calc((100vw - var(--shell)) / 2 - 4px);
  }
}

/* ---------- 主体流 ---------- */
.page-faq .faq-body {
  padding-top: 48px;
  padding-bottom: 24px;
}

.page-faq .faq-flow {
  max-width: var(--faq-measure);
  display: flex;
  flex-direction: column;
  gap: 88px;
}

.page-faq .faq-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
}

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

.page-faq .faq-chips .chip {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
}

@media (min-width: 1200px) {
  .page-faq .faq-chips {
    display: none;
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  position: relative;
  scroll-margin-top: 148px;
}

.page-faq .faq-group + .faq-group {
  padding-top: 88px;
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(100%, 640px);
  height: 1px;
  background: var(--gold);
  opacity: 0.45;
  transform: rotate(-1.4deg);
  transform-origin: left center;
}

.page-faq .faq-group-head {
  margin-bottom: 32px;
}

.page-faq .faq-group-index {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
}

.page-faq .faq-group-num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-faq .faq-group-tag {
  font-size: 12px;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--note);
}

.page-faq .faq-group-title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 600;
  line-height: 1.26;
  letter-spacing: -0.006em;
  color: var(--paper);
  max-width: 18em;
}

.page-faq .faq-group-lede {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--note);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
}

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

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--pitch);
}

.page-faq .faq-q {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 46px 20px 0;
  font-size: 16px;
  line-height: 1.62;
  color: var(--paper);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-q-num {
  flex: none;
  width: 30px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-top: 4px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--note);
}

.page-faq .faq-q-num::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--cyan);
  transform: rotate(45deg);
  transition: background-color 160ms var(--ease);
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
}

.page-faq .faq-q::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 26px;
  width: 10px;
  height: 10px;
  border-right: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-item[open] .faq-q::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .faq-q:hover {
  color: var(--gold-soft);
}

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

.page-faq .faq-a {
  position: relative;
  padding: 2px 40px 28px 20px;
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 22px;
  width: 1px;
  background: var(--gold);
  opacity: 0;
  transform: scaleY(0.4);
  transform-origin: top center;
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-item[open] .faq-a::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--button-text);
}

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

.page-faq .faq-path {
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--gold-soft);
  letter-spacing: 0.02em;
}

.page-faq .faq-path .faq-link {
  color: var(--gold);
  text-decoration: none;
  background-image: linear-gradient(var(--gold-soft), var(--gold-soft));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .faq-path .faq-link:hover,
.page-faq .faq-path .faq-link:focus-visible {
  color: var(--gold-soft);
  background-size: 100% 1px;
}

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

/* ---------- 入口分组的配图 ---------- */
.page-faq .faq-entry-media {
  position: relative;
  margin: 34px 0 0;
  overflow: hidden;
  background: var(--board);
  aspect-ratio: 1000 / 750;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
}

.page-faq .faq-entry-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.06) brightness(0.88);
}

.page-faq .faq-entry-media figcaption {
  position: absolute;
  left: 18px;
  bottom: 14px;
  max-width: 34em;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gold-soft);
  letter-spacing: 0.02em;
}

.page-faq .faq-entry-media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(16, 42, 35, 0.35) 0%, rgba(16, 42, 35, 0.5) 55%, rgba(5, 13, 11, 0.9) 100%);
}

@media (min-width: 900px) {
  .page-faq .faq-entry-media {
    aspect-ratio: 1000 / 460;
    margin-top: 40px;
  }
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  position: relative;
  margin-top: 96px;
  padding: 68px 0 88px;
  background: var(--board);
  border-top: 1px solid var(--pitch);
  overflow: hidden;
}

.page-faq .faq-outro::before {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  top: 30px;
  height: 1px;
  background: var(--gold);
  opacity: 0.28;
  transform: rotate(-1.2deg);
  pointer-events: none;
}

.page-faq .faq-outro-inner {
  position: relative;
  max-width: var(--faq-measure);
}

.page-faq .faq-outro-title {
  margin: 14px 0 16px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 600;
  line-height: 1.28;
  color: var(--paper);
  max-width: 20em;
}

.page-faq .faq-outro-text {
  margin: 0 0 28px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--note);
}

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

/* ---------- 窄屏 ---------- */
@media (max-width: 760px) {
  .page-faq {
    --faq-gutter: 18px;
    padding-top: 88px;
  }

  .page-faq .faq-hero {
    padding-bottom: 56px;
  }

  .page-faq .faq-hero-media {
    clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  }

  .page-faq .faq-body {
    padding-top: 36px;
  }

  .page-faq .faq-flow {
    gap: 68px;
  }

  .page-faq .faq-group + .faq-group {
    padding-top: 68px;
  }

  .page-faq .faq-q {
    gap: 12px;
    padding: 18px 34px 18px 0;
    font-size: 15px;
  }

  .page-faq .faq-q-num {
    width: 26px;
  }

  .page-faq .faq-q::after {
    right: 6px;
    top: 24px;
  }

  .page-faq .faq-a {
    padding: 2px 12px 24px 15px;
  }

  .page-faq .faq-entry-media {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
  }

  .page-faq .faq-outro {
    margin-top: 72px;
    padding: 56px 0 68px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q::after,
  .page-faq .faq-a::before,
  .page-faq .faq-q-num::before,
  .page-faq .faq-path .faq-link,
  .page-faq .faq-rail a,
  .page-faq .faq-rail .rail-tick,
  .page-faq .faq-rail .rail-label {
    transition: none;
  }
}