.page-faq {
  --faq-rail-w: 148px;
  --faq-col-gap: 44px;
  --faq-paper-line: rgba(21, 19, 15, 0.14);
  background: var(--df-ink-900);
  color: var(--df-ivory-050);
  overflow-x: clip;
}

.page-faq img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-faq .faq-topbar {
  background: var(--df-ink-900);
  border-bottom: 1px solid var(--df-hair);
}

.page-faq .faq-topbar .df-shell {
  padding-top: 18px;
  padding-bottom: 18px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background:
    radial-gradient(880px 420px at 84% -14%, rgba(198, 161, 91, 0.17), transparent 68%),
    linear-gradient(180deg, #0b0c0e 0%, #101216 100%);
  border-bottom: 1px solid var(--df-hair);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-size: clamp(30px, 7.2vw, 56px);
}

.page-faq .faq-hero__lead .df-lede {
  max-width: 46em;
}

.page-faq .faq-hero__aside {
  padding: 20px 0 0;
  border-top: 1px solid var(--df-gold-line);
}

.page-faq .faq-hero__aside-num {
  margin: 0 0 8px;
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 42px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--df-gold-500);
}

.page-faq .faq-hero__aside-text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--df-ivory-mute);
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-idx-band {
  background: var(--df-cream-100);
  color: var(--df-ink-on-paper);
  border-bottom: 1px solid var(--df-hair);
}

.page-faq .faq-idx-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  margin-bottom: 18px;
}

.page-faq .faq-idx-head .df-title-sm {
  color: var(--df-ink-on-paper);
}

.page-faq .faq-idx-head .df-note {
  color: #6b6154;
}

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

.page-faq .faq-idx__link {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  padding: 16px 8px 16px 0;
  border-bottom: 1px solid var(--faq-paper-line);
  color: inherit;
  text-decoration: none;
  transition: background-color 0.18s var(--df-ease), padding-left 0.18s var(--df-ease);
}

.page-faq .faq-idx__num {
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: #8a6f38;
  transition: color 0.18s var(--df-ease);
}

.page-faq .faq-idx__label {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-idx__meta {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.6;
  color: #6b6154;
}

.page-faq .faq-idx__link:hover,
.page-faq .faq-idx__link:focus-visible {
  background: rgba(198, 161, 91, 0.16);
  padding-left: 10px;
}

.page-faq .faq-idx__link:hover .faq-idx__num,
.page-faq .faq-idx__link:focus-visible .faq-idx__num {
  color: #8a5a12;
}

/* ---------- 视觉带 ---------- */
.page-faq .faq-plate {
  background: var(--df-ink-900);
  border-bottom: 1px solid var(--df-hair);
}

.page-faq .faq-plate__media {
  margin: 0;
}

.page-faq .faq-plate__media img {
  width: 100%;
  border: 1px solid var(--df-hair);
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

.page-faq .faq-plate__media .df-media__label {
  margin-top: 12px;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-body {
  background: var(--df-ink-900);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-rail__list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 14px;
  border: 1px solid var(--df-hair);
  color: var(--df-ivory-mute);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.18s var(--df-ease), color 0.18s var(--df-ease), background-color 0.18s var(--df-ease);
}

.page-faq .faq-rail__num {
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--df-gray-500);
  transition: color 0.18s var(--df-ease);
}

.page-faq .faq-rail__label {
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: var(--df-gold-line);
  background: rgba(198, 161, 91, 0.08);
  color: var(--df-amber-400);
}

.page-faq .faq-rail__list a:hover .faq-rail__num,
.page-faq .faq-rail__list a:focus-visible .faq-rail__num {
  color: var(--df-amber-400);
}

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

.page-faq .faq-group {
  padding: 34px 0;
  border-top: 1px solid var(--df-hair);
  scroll-margin-top: calc(var(--df-header-h) + 28px);
}

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

.page-faq .faq-group__head {
  margin-bottom: 18px;
}

.page-faq .faq-group__kicker {
  margin: 0 0 8px;
  font-family: var(--df-font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--df-gold-500);
}

.page-faq .faq-group__head .df-title-md {
  margin: 0;
  line-height: 1.3;
}

.page-faq .faq-group__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-inline-media {
  margin: 0;
}

.page-faq .faq-inline-media img {
  width: 100%;
  border: 1px solid var(--df-hair);
  object-fit: cover;
  aspect-ratio: 12 / 8.5;
}

.page-faq .faq-inline-media .df-media__label {
  margin-top: 10px;
}

/* ---------- 展开组 ---------- */
.page-faq .df-accordion__item {
  border-bottom: 1px solid var(--df-hair);
}

.page-faq .df-accordion__item > summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--df-ivory-050);
}

.page-faq .df-accordion__item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .df-accordion__num {
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--df-gray-500);
  padding-top: 4px;
  transition: color 0.18s var(--df-ease);
}

.page-faq .faq-q__text {
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  transition: color 0.18s var(--df-ease);
}

.page-faq .df-accordion__item > summary:hover .faq-q__text,
.page-faq .df-accordion__item > summary:focus-visible .faq-q__text {
  color: var(--df-amber-400);
}

.page-faq .df-accordion__item > summary:hover .df-accordion__num {
  color: var(--df-amber-400);
}

.page-faq .df-accordion__item[open] > summary .faq-q__text {
  color: var(--df-amber-400);
}

.page-faq .df-accordion__item[open] > summary .df-accordion__num {
  color: var(--df-gold-500);
}

.page-faq .df-accordion__icon {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 7px;
  justify-self: end;
}

.page-faq .df-accordion__icon::before,
.page-faq .df-accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--df-gold-500);
  transition: transform 0.22s var(--df-ease), background-color 0.18s var(--df-ease);
}

.page-faq .df-accordion__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .df-accordion__icon::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-faq .df-accordion__item[open] .df-accordion__icon::after {
  transform: scaleY(0);
}

.page-faq .df-accordion__body {
  padding: 0 0 20px;
  color: var(--df-ivory-mute);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .df-accordion__item[open] .df-accordion__body {
  animation: faq-reveal 0.26s var(--df-ease) both;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  position: relative;
  padding-left: 36px;
  counter-increment: faqstep;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  padding: 1px 5px;
  border: 1px solid var(--df-gold-line);
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--df-gold-500);
}

.page-faq .faq-note {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--df-gold-line);
  background: var(--df-brown-850);
}

.page-faq .faq-note__title {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--df-gray-500);
}

.page-faq .faq-note__code {
  font-family: var(--df-font-num);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--df-amber-400);
}

.page-faq .faq-note p {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.75;
}

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

/* ---------- 收口 ---------- */
.page-faq .faq-help {
  background: linear-gradient(180deg, var(--df-brown-850) 0%, #120d09 100%);
  border-top: 1px solid var(--df-gold-line);
}

.page-faq .faq-help__panel {
  border-left: 1px solid var(--df-gold-line);
  padding-left: 20px;
  max-width: 68em;
}

.page-faq .faq-help__panel .df-title-lg {
  margin: 10px 0 16px;
  line-height: 1.22;
}

.page-faq .faq-help__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--df-ivory-mute);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 18px;
}

.page-faq .faq-help__panel .df-note a {
  color: var(--df-amber-400);
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-idx__link {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 4px 18px;
    padding-right: 12px;
  }

  .page-faq .df-accordion__item > summary {
    grid-template-columns: 48px minmax(0, 1fr) 18px;
    gap: 18px;
  }

  .page-faq .df-accordion__body {
    padding-left: 66px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-idx__link {
    grid-template-columns: 68px minmax(0, 1fr) minmax(0, 300px);
    gap: 0 22px;
  }

  .page-faq .faq-idx__meta {
    grid-column: 3;
    text-align: right;
    padding-top: 3px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .faq-hero__aside {
    padding: 0 0 6px 28px;
    border-top: 0;
    border-left: 1px solid var(--df-gold-line);
  }

  .page-faq .faq-group__cols {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-faq .faq-inline-media {
    position: sticky;
    top: calc(var(--df-header-h) + 28px);
  }

  .page-faq .faq-help__panel {
    padding-left: 34px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-col-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--df-header-h) + 32px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--df-hair);
  }

  .page-faq .faq-rail__list a {
    flex-direction: row;
    align-items: baseline;
    gap: 10px;
    margin-left: -1px;
    padding: 12px 8px 12px 16px;
    border: 0;
    border-left: 1px solid transparent;
    white-space: normal;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--df-gold-500);
    background: transparent;
    color: var(--df-amber-400);
  }

  .page-faq .faq-group {
    padding: 48px 0;
  }

  .page-faq .faq-group__head {
    margin-bottom: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .df-accordion__item[open] .df-accordion__body {
    animation: none;
  }

  .page-faq .faq-idx__link,
  .page-faq .df-accordion__icon::before,
  .page-faq .df-accordion__icon::after,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}