.page-faq {
  --faq-index-w: 152px;
  --faq-paper-line: rgba(27, 33, 48, 0.14);
  --faq-paper-ink-soft: rgba(27, 33, 48, 0.80);
  --faq-code-ink: #5A3FD8;
  display: block;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: 108px 0 52px;
  overflow: hidden;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-faq .faq-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 12% 18%, rgba(33, 230, 212, 0.16), transparent 62%),
    radial-gradient(90% 80% at 88% 8%, rgba(124, 92, 255, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(6, 11, 24, 0.42) 0%, rgba(6, 11, 24, 0.92) 70%, var(--gs-void) 100%);
}

.page-faq .faq-hero__shell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-hero__crumb {
  margin-bottom: 4px;
}

.page-faq .faq-hero__sep {
  margin: 0 8px;
  color: var(--gs-line);
}

.page-faq .faq-hero__title {
  max-width: 20ch;
  margin: 0;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  color: var(--gs-silver);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-desk {
  padding-top: 8px;
}

.page-faq .faq-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin: 0 0 24px;
}

.page-faq .faq-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 1 1 260px;
  max-width: 360px;
  background: var(--gs-ink);
  border: var(--gs-edge);
  border-radius: 999px;
  padding: 0 16px;
  transition: border-color 200ms var(--gs-ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--gs-cyan);
}

.page-faq .faq-search__icon {
  display: inline-flex;
  color: var(--gs-silver);
  margin-right: 8px;
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--gs-white);
  font-family: var(--gs-font-body);
  font-size: 14px;
  padding: 12px 0;
}

.page-faq .faq-search__input::placeholder {
  color: var(--gs-silver);
  opacity: 0.75;
}

.page-faq .faq-filters {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
  flex: 1 1 auto;
}

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

.page-faq .faq-live {
  flex: 0 0 auto;
  margin: 0;
  font-family: var(--gs-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gs-silver);
}

/* 索引 + 手风琴布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 18px;
}

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

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--gs-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gs-violet);
  flex: 0 0 auto;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-block;
  padding: 5px 10px;
  border: var(--gs-edge);
  border-radius: 999px;
  font-family: var(--gs-font-mono);
  font-size: 12px;
  color: var(--gs-silver);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--gs-ease), border-color 160ms var(--gs-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--gs-cyan);
  border-color: rgba(33, 230, 212, 0.55);
}

/* 暖纸面板 */
.page-faq .faq-list {
  background: var(--gs-paper);
  color: var(--gs-paper-ink);
  border: var(--gs-edge);
  border-radius: var(--gs-radius);
  padding: 4px 18px;
  box-shadow: var(--gs-shadow);
}

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

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

.page-faq .faq-item__btn {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 6px 14px;
  padding: 18px 0 19px;
  background: none;
  border: 0;
  text-align: left;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

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

.page-faq .faq-item__btn::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--gs-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 160ms var(--gs-ease);
}

.page-faq .faq-item[data-open] .faq-item__btn::after {
  transform: scaleX(1);
}

.page-faq .faq-item__code {
  font-family: var(--gs-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faq-code-ink);
  padding-top: 5px;
}

.page-faq .faq-item__q {
  font-family: var(--gs-font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--gs-paper-ink);
}

.page-faq .faq-item__chev {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 4px;
  border: 1px solid rgba(27, 33, 48, 0.28);
  border-radius: 50%;
  color: var(--gs-paper-ink);
  flex: none;
  transition: border-color 160ms var(--gs-ease);
}

.page-faq .faq-item__chev::before,
.page-faq .faq-item__chev::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

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

.page-faq .faq-item__chev::after {
  width: 1.5px;
  height: 10px;
  transition: transform 200ms var(--gs-ease);
}

.page-faq .faq-item[data-open] .faq-item__chev {
  border-color: var(--gs-cyan);
}

.page-faq .faq-item[data-open] .faq-item__chev::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-answer {
  display: none;
  padding: 0 0 22px;
}

.page-faq .faq-item[data-open] .faq-answer {
  display: block;
}

.page-faq .faq-answer p {
  margin: 0;
  font-family: var(--gs-font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-paper-ink-soft);
  animation: faqReveal 200ms var(--gs-ease) both;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateX(8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ---------- 深度操作区 ---------- */
.page-faq .faq-deep {
  padding-top: 8px;
}

.page-faq .faq-deep__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
}

.page-faq .faq-card__kicker {
  margin: 0;
  font-family: var(--gs-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gs-cyan);
  text-transform: uppercase;
}

.page-faq .faq-card__title {
  margin: 0;
  color: var(--gs-white);
}

.page-faq .faq-card__link {
  margin: 4px 0 0;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 6px 12px;
  font-family: var(--gs-font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--gs-silver);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--gs-font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--gs-cyan);
  padding-top: 4px;
}

.page-faq .faq-steps--bullet li::before {
  content: "—";
  color: var(--gs-orange);
}

.page-faq .faq-steps strong {
  color: var(--gs-white);
  font-weight: 700;
}

/* ---------- 平板专章 ---------- */
.page-faq .faq-tablet {
  display: grid;
  gap: 20px;
  padding: 24px;
}

.page-faq .faq-tablet__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-tablet__media {
  margin: 0;
  border: var(--gs-edge);
  border-radius: var(--gs-radius);
  overflow: hidden;
  background: var(--gs-void);
}

.page-faq .faq-tablet__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-tablet__media figcaption {
  padding: 10px 14px;
  font-family: var(--gs-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gs-silver);
  border-top: var(--gs-edge);
}

/* ---------- 收尾联系 ---------- */
.page-faq .faq-cta__inner {
  display: grid;
  gap: 24px;
  padding: 26px 22px;
  background: var(--gs-stand);
  border: var(--gs-edge);
  border-radius: var(--gs-radius);
  box-shadow: var(--gs-shadow);
}

.page-faq .faq-cta__copy {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-cta__lead {
  margin: 0;
  font-family: var(--gs-font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--gs-silver);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 6px 0 0;
}

.page-faq .faq-cta__side {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 18px;
  background: rgba(6, 11, 24, 0.55);
  border: var(--gs-edge);
  border-radius: var(--gs-radius);
}

.page-faq .faq-cta__note {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gs-silver);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 132px 0 68px;
  }

  .page-faq .faq-list {
    padding: 6px 28px;
  }

  .page-faq .faq-item__btn {
    padding: 22px 0 23px;
    gap: 8px 18px;
  }

  .page-faq .faq-item__q {
    font-size: 18px;
  }

  .page-faq .faq-answer {
    padding: 0 0 26px 46px;
  }

  .page-faq .faq-card {
    padding: 28px;
  }

  .page-faq .faq-cta__inner {
    padding: 36px 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-tools {
    flex-wrap: nowrap;
  }

  .page-faq .faq-live {
    margin-left: auto;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-index {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-deep__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-tablet {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 32px;
    padding: 32px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
    align-items: start;
    padding: 44px 40px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: 56px;
  }

  .page-faq .faq-card {
    padding: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__btn::after,
  .page-faq .faq-item__chev::after {
    transition: none;
  }

  .page-faq .faq-answer p {
    animation: none;
  }
}