.page-faq {
  --faq-gap: clamp(26px, 4.5vw, 56px);
  --faq-paper-edge: #e7dcc8;
  --faq-shadow: 0 26px 60px -34px rgba(6, 11, 34, .92);
  display: block;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 7vw, 76px) 0 clamp(38px, 6vw, 72px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 150%;
  background:
    radial-gradient(58% 66% at 80% 14%, rgba(90, 60, 196, .58), transparent 68%),
    radial-gradient(42% 52% at 8% 86%, rgba(53, 224, 214, .16), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.4vw, 3.35rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--star-92);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(.95rem, 1.6vw, 1.0625rem);
  line-height: 1.78;
  color: var(--star-70);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
  align-content: start;
  padding-top: 6px;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 88px;
}

.page-faq .faq-stat__v {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  line-height: 1.1;
  color: var(--gold);
}

.page-faq .faq-stat__l {
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--star-45);
}

.page-faq .faq-body {
  padding-bottom: clamp(48px, 8vw, 100px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

/* 侧栏：分组胶囊 */
.page-faq .faq-side__inner {
  padding: 18px;
  border-radius: var(--r-panel);
  border: 1px solid rgba(90, 60, 196, .38);
  background: linear-gradient(158deg, rgba(43, 26, 99, .62), rgba(6, 11, 34, .82));
}

.page-faq .faq-side__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--star-45);
}

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

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

.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  padding: 10px 15px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(247, 249, 255, .16);
  background: rgba(247, 249, 255, .04);
  color: var(--star-70);
  font-size: .875rem;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  color: var(--star-92);
  border-color: rgba(53, 224, 214, .55);
  background: rgba(53, 224, 214, .1);
}

.page-faq .faq-cat.is-active,
.page-faq .faq-cat[aria-pressed="true"] {
  color: var(--ink-deep);
  border-color: transparent;
  background: linear-gradient(120deg, var(--cyan), #6ff0e6 55%, var(--gold));
  box-shadow: 0 10px 26px -14px rgba(53, 224, 214, .8);
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--gold);
}

.page-faq .faq-cat.is-active .faq-cat__num,
.page-faq .faq-cat[aria-pressed="true"] .faq-cat__num {
  color: var(--galaxy);
}

.page-faq .faq-cat__count {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: 2px 7px;
  border-radius: var(--r-pill);
  background: rgba(53, 224, 214, .14);
  color: var(--cyan);
}

.page-faq .faq-cat.is-active .faq-cat__count,
.page-faq .faq-cat[aria-pressed="true"] .faq-cat__count {
  background: rgba(6, 11, 34, .18);
  color: var(--ink-deep);
}

.page-faq .faq-side__foot {
  margin: 16px 0 0;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--star-45);
}

.page-faq .faq-side__foot .link-inline {
  color: var(--cyan);
}

/* 主列 */
.page-faq .faq-main {
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3.4vw, 40px);
  min-width: 0;
}

.page-faq .faq-status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--star-45);
}

.page-faq .faq-group {
  position: relative;
  padding: clamp(22px, 3.4vw, 40px);
  border-radius: var(--r-panel);
  background: linear-gradient(178deg, var(--paper) 0%, #efe7d8 100%);
  box-shadow: var(--faq-shadow);
  scroll-margin-top: 110px;
  min-width: 0;
}

.page-faq .faq-group::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image: radial-gradient(rgba(19, 22, 34, .055) 1px, transparent 1px);
  background-size: 15px 15px;
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-group > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 16px;
  margin-bottom: clamp(14px, 2vw, 22px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-paper-edge);
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1;
  color: var(--nebula);
}

.page-faq .faq-group__head .h-section {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  line-height: 1.3;
  color: var(--ink-88);
}

.page-faq .faq-group__intro {
  grid-column: 2;
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink-62);
}

/* 图注 */
.page-faq .faq-figure {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--faq-paper-edge);
  background: #fff;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--faq-paper-edge);
  background: rgba(225, 214, 193, .38);
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--ink-62);
}

/* 折叠问答 */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-paper-edge);
}

.page-faq .faq-list .accordion__item {
  border-bottom: 1px solid var(--faq-paper-edge);
}

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

.page-faq .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 4px;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-88);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .accordion__trigger:hover,
.page-faq .accordion__trigger:focus-visible {
  color: var(--nebula);
}

.page-faq .faq-q__text {
  display: block;
  min-width: 0;
}

.page-faq .faq-q__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1px solid rgba(90, 60, 196, .42);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-q__icon::before,
.page-faq .faq-q__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--nebula);
  transform: translate(-50%, -50%);
  transition: opacity var(--dur) var(--ease);
}

.page-faq .faq-q__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-q__icon::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__icon {
  transform: rotate(180deg);
  background: rgba(90, 60, 196, .12);
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__icon::after {
  opacity: 0;
}

.page-faq .accordion__panel {
  padding: 0 4px 20px;
  max-width: 64ch;
  font-size: .9375rem;
  line-height: 1.82;
  color: var(--ink-62);
}

.page-faq .accordion__panel p {
  margin: 0;
}

.page-faq .accordion__panel .link-inline {
  color: var(--nebula);
  border-bottom: 1px solid rgba(90, 60, 196, .4);
  text-decoration: none;
}

/* 收束区 */
.page-faq .faq-outro {
  position: relative;
  overflow: hidden;
  margin-top: clamp(8px, 1.5vw, 16px);
  padding: clamp(26px, 3.6vw, 44px);
  border-radius: var(--r-panel);
  border: 1px solid rgba(90, 60, 196, .42);
  background: linear-gradient(135deg, rgba(43, 26, 99, .88), rgba(6, 11, 34, .95));
}

.page-faq .faq-outro__rail {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--gold), transparent);
}

.page-faq .faq-outro .h-section {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  line-height: 1.35;
  color: var(--star-92);
}

.page-faq .faq-outro__text {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--star-70);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-outro__actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--r-pill);
  font-size: .9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-outro__actions .btn--gold {
  background: linear-gradient(120deg, var(--gold), #ffd692);
  color: var(--ink-deep);
  box-shadow: 0 14px 32px -18px rgba(242, 178, 80, .9);
}

.page-faq .faq-outro__actions .btn--ghost {
  border-color: rgba(247, 249, 255, .3);
  color: var(--star-92);
}

.page-faq .faq-outro__actions .btn:hover,
.page-faq .faq-outro__actions .btn:focus-visible {
  transform: translateY(-2px);
}

.page-faq .faq-outro__actions .btn--ghost:hover,
.page-faq .faq-outro__actions .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-hero__stats {
    justify-content: flex-end;
    text-align: right;
    padding-top: 0;
  }

  .page-faq .faq-stat {
    align-items: flex-end;
  }
}

/* 桌面端 */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(216px, 258px) minmax(0, 1fr);
  }

  .page-faq .faq-side {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-cats {
    flex-direction: column;
    overflow: visible;
    gap: 7px;
    padding-bottom: 0;
  }

  .page-faq .faq-cat {
    width: 100%;
    justify-content: flex-start;
    padding: 11px 14px;
  }

  .page-faq .faq-cat__name {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .page-faq .faq-group {
    padding: clamp(30px, 3.2vw, 44px);
  }

  .page-faq .faq-figure {
    max-width: 720px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-q__icon,
  .page-faq .accordion__trigger,
  .page-faq .faq-outro__actions .btn {
    transition-duration: .01ms;
  }

  .page-faq .faq-outro__actions .btn:hover,
  .page-faq .faq-outro__actions .btn:focus-visible {
    transform: none;
  }
}