.page-faq {
  --faq-rail-w: 232px;
  --faq-hair: 1px solid var(--raise);
  display: block;
  padding: 0 0 88px;
  color: var(--read);
  background:
    radial-gradient(880px 420px at 90% -12%, rgba(61, 116, 255, 0.16), transparent 62%),
    radial-gradient(640px 320px at 2% 2%, rgba(228, 3, 46, 0.1), transparent 60%),
    var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 36px 0 48px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  width: 128px;
  height: 6px;
  background: linear-gradient(90deg, var(--red) 0 48%, var(--blue) 48% 100%);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--read);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-faq .faq-hero-figure {
  margin: 0;
}

.page-faq .faq-hero-figure .figure-frame {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: var(--faq-hair);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 48px 100%, 0 calc(100% - 48px));
}

.page-faq .faq-hero-figure .figure-frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(217, 168, 60, 0.55), rgba(217, 168, 60, 0));
  pointer-events: none;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  padding: 8px 0 12px;
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--raise);
  border: var(--faq-hair);
}

.page-faq .faq-index-list > li {
  background: var(--panel);
}

.page-faq .faq-index-list a {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 16px 16px 18px;
  min-height: 108px;
  text-decoration: none;
  color: var(--read);
  border-top: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  background: var(--raise);
  border-top-color: var(--blue);
}

.page-faq .faq-index-num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-faq .faq-index-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-index-list .badge {
  color: var(--gold);
  border-color: rgba(217, 168, 60, 0.42);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 32px;
}

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

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 14px;
  text-decoration: none;
  color: var(--silver);
  background: var(--panel);
  border: var(--faq-hair);
  border-left: 2px solid var(--raise);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-rail-list a .mono {
  font-size: 12px;
  color: var(--mute);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  color: var(--read);
  border-left-color: var(--gold);
  background: var(--raise);
}

.page-faq .faq-rail-list a.is-active {
  color: var(--read);
  border-left-color: var(--gold);
  background: var(--raise);
}

.page-faq .faq-rail-list a.is-active .mono {
  color: var(--gold);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 48px;
  scroll-margin-top: calc(var(--head-h) + 24px);
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--faq-hair);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: var(--faq-hair);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  background: linear-gradient(90deg, rgba(61, 116, 255, 0.07), transparent 62%);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 15px 6px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-faq .faq-q-idx {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-faq .faq-q-text {
  font-size: 16px;
  line-height: 1.55;
  color: var(--read);
}

.page-faq .faq-item[open] .faq-q-text {
  color: var(--blue-lt);
}

.page-faq .faq-caret {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .faq-caret::before,
.page-faq .faq-caret::after {
  content: "";
  position: absolute;
  background: var(--silver);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-caret::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .faq-caret::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-caret::before {
  background: var(--gold);
}

.page-faq .faq-item[open] .faq-caret::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 6px 18px 6px;
  max-width: 680px;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-faq .faq-a a {
  color: var(--blue-lt);
  text-decoration: none;
  border-bottom: 1px dashed rgba(127, 163, 255, 0.5);
}

.page-faq .faq-a a:hover {
  color: var(--read);
  border-bottom-color: var(--gold);
}

.page-faq .faq-a-hint {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(217, 168, 60, 0.08);
  border: 1px solid rgba(217, 168, 60, 0.34);
}

.page-faq .faq-item--key::before {
  content: "";
  position: absolute;
  inset: 0;
  border-left: 2px solid var(--gold);
  pointer-events: none;
}

.page-faq .faq-item--key {
  background: linear-gradient(90deg, rgba(217, 168, 60, 0.08), transparent 55%);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
}

.page-faq .faq-figure .figure-frame {
  overflow: hidden;
  background: var(--panel);
  border: var(--faq-hair);
  clip-path: polygon(0 0, calc(100% - 36px) 0, 100% 36px, 100% 100%, 0 100%);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-figure .figure-cap {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  scroll-margin-top: calc(var(--head-h) + 24px);
}

.page-faq .faq-help-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  padding: 24px 22px 26px;
  background: var(--panel);
  border: var(--faq-hair);
  border-left: 2px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%);
}

.page-faq .faq-help-text p {
  margin: 0 0 12px;
  max-width: 680px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

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

.page-faq .faq-help-text a {
  color: var(--blue-lt);
  text-decoration: none;
  border-bottom: 1px dashed rgba(127, 163, 255, 0.5);
}

.page-faq .faq-help-text a:hover {
  color: var(--read);
  border-bottom-color: var(--gold);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 48px 0 56px;
  }

  .page-faq h1 {
    font-size: 42px;
  }

  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-a {
    padding-left: 54px;
  }
}

@media (min-width: 960px) {
  .page-faq {
    padding-bottom: 112px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 48px;
    padding: 64px 0 72px;
  }

  .page-faq h1 {
    font-size: 52px;
  }

  .page-faq .faq-index-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
    padding-top: 48px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 24px);
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-top: var(--faq-hair);
  }

  .page-faq .faq-rail-list li {
    border-bottom: var(--faq-hair);
  }

  .page-faq .faq-rail-list a {
    white-space: normal;
    padding: 11px 14px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--raise);
  }

  .page-faq .faq-rail-list a:hover,
  .page-faq .faq-rail-list a:focus-visible,
  .page-faq .faq-rail-list a.is-active {
    background: var(--panel);
    border-left-color: var(--gold);
  }

  .page-faq .faq-help-card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    padding: 28px 28px 30px;
  }

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

  .page-faq .faq-group {
    margin-bottom: 64px;
  }
}

@media (min-width: 1200px) {
  .page-faq h1 {
    font-size: 56px;
  }

  .page-faq .faq-a {
    padding-left: 62px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-caret::before,
  .page-faq .faq-caret::after,
  .page-faq .faq-index-list a,
  .page-faq .faq-rail-list a,
  .page-faq .faq-item {
    transition: none;
  }
}