.page-faq {
  --faq-radius: 2px;
  --faq-gap: 20px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  display: block;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(102deg, rgba(11, 22, 34, 0.97) 0%, rgba(11, 22, 34, 0.88) 44%, rgba(18, 38, 58, 0.5) 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 40px;
  padding-bottom: 36px;
  display: grid;
  gap: 18px;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 18em;
  font-size: clamp(30px, 7.2vw, 62px);
  line-height: 1.06;
  letter-spacing: 0.01em;
  font-weight: 400;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 40em;
  color: rgba(232, 241, 248, 0.86);
  font-size: 16px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 6px 0 0;
  padding: 16px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stats li {
  display: grid;
  gap: 2px;
}

.page-faq .faq-hero__num {
  font-size: clamp(24px, 5vw, 34px);
  line-height: 1;
  color: var(--white);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 40px;
  padding-bottom: 64px;
}

/* 左轨索引 */
.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--bg-2);
  padding: 16px;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 8px;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid var(--line);
  font-size: 15px;
  transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--acc);
  background: rgba(57, 255, 136, 0.07);
  color: var(--white);
}

.page-faq .faq-index__num {
  color: var(--cyan);
  font-size: 12px;
}

.page-faq .faq-index__hint {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

/* 问答流 */
.page-faq .faq-flow {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-group {
  display: grid;
  gap: 16px;
  min-width: 0;
  scroll-margin-top: 130px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 6px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
}

.page-faq .faq-group__num {
  font-size: 30px;
  line-height: 1;
  color: var(--acc);
  grid-row: span 2;
  align-self: center;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--ink);
}

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

/* 折叠问答 */
.page-faq .faq-q {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--bg-2);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}

.page-faq .faq-q:hover {
  border-color: var(--line-2);
}

.page-faq .faq-q[open] {
  border-color: rgba(34, 211, 238, 0.65);
  box-shadow: inset 2px 0 0 0 var(--cyan);
  background: var(--bg-deep);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-q__title {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-q[open] .faq-q__title {
  color: var(--white);
}

.page-faq .faq-q__mark {
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--cyan);
  border-bottom: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform var(--t-fast);
  margin-right: 4px;
}

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

.page-faq .faq-q__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-q__body p {
  margin: 0;
  max-width: 36em;
  color: rgba(232, 241, 248, 0.84);
  font-size: 15px;
}

/* 平板图文分栏 */
.page-faq .faq-group__split {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.page-faq .faq-group__col {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.page-faq .faq-figure {
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-figure__media {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--bg-deep);
}

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

.page-faq .faq-figure figcaption {
  padding-left: 2px;
}

/* 改版变更对照 */
.page-faq .faq-move {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-move__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-move__from {
  color: var(--muted);
  font-size: 14px;
}

.page-faq .faq-move__arrow {
  color: var(--orange);
  font-family: var(--mono);
  font-size: 14px;
}

.page-faq .faq-move__to {
  color: var(--ink);
  font-size: 15px;
}

.page-faq .faq-move__note {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--amber);
  background: rgba(255, 194, 75, 0.05);
}

.page-faq .faq-move__note p {
  margin: 0;
  max-width: 46em;
  color: rgba(232, 241, 248, 0.85);
}

.page-faq .faq-move__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 4px 0 0;
}

/* 反馈 */
.page-faq .faq-feedback {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.page-faq .faq-feedback__main {
  display: grid;
  gap: 12px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--bg-3);
}

.page-faq .faq-feedback__title {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--acc);
}

.page-faq .faq-feedback__main > p {
  margin: 0;
  max-width: 38em;
  color: rgba(232, 241, 248, 0.86);
  font-size: 15px;
}

.page-faq .faq-feedback__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-feedback__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-size: 15px;
  color: rgba(232, 241, 248, 0.88);
}

.page-faq .faq-feedback__num {
  color: var(--cyan);
  font-size: 13px;
  line-height: 1.9;
}

.page-faq .faq-feedback__list strong {
  color: var(--white);
  font-weight: 500;
}

.page-faq .faq-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 6px;
}

.page-faq .faq-feedback__aside {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  border-radius: var(--faq-radius);
  background: var(--bg-2);
}

.page-faq .faq-feedback__facts {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-feedback__facts > div {
  display: grid;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-feedback__facts > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-feedback__facts dt {
  margin: 0;
}

.page-faq .faq-feedback__value {
  margin: 0;
  color: var(--white);
  font-family: var(--mono);
  font-size: 15px;
  word-break: break-word;
}

.page-faq .faq-feedback__aside > p {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

/* 术语对照 */
.page-faq .faq-terms {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-terms__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-fast);
}

.page-faq .faq-terms__row:hover {
  background: rgba(34, 211, 238, 0.05);
}

.page-faq .faq-terms__row dt {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-terms__row dd {
  margin: 0;
  font-size: 15px;
  color: rgba(232, 241, 248, 0.85);
  max-width: 40em;
}

/* 收尾 */
.page-faq .faq-cta {
  display: grid;
  gap: 14px;
  padding: 22px 18px;
  border: 1px solid var(--line-2);
  border-radius: var(--faq-radius);
  background: linear-gradient(96deg, rgba(14, 42, 34, 0.9) 0%, rgba(18, 38, 58, 0.9) 62%, rgba(11, 22, 34, 0.95) 100%);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  color: var(--ink);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .copy-mail[data-copied] .copy-mail__label,
.page-faq .copy-mail[data-copied]::after {
  color: var(--acc);
}

@media (min-width: 720px) {
  .page-faq .faq-hero__inner {
    padding-top: 56px;
    padding-bottom: 48px;
    gap: 22px;
  }

  .page-faq .faq-move__row {
    grid-template-columns: minmax(0, 12em) auto minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
    padding: 16px 6px;
  }

  .page-faq .faq-terms__row {
    grid-template-columns: minmax(0, 9em) minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
    padding: 16px 6px;
  }

  .page-faq .faq-feedback__main {
    padding: 24px 22px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 48px;
    padding-top: 56px;
    padding-bottom: 88px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-feedback {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-flow {
    gap: 56px;
  }

  .page-faq .faq-cta {
    padding: 28px 26px;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q__mark,
  .page-faq .faq-index__link,
  .page-faq .faq-terms__row {
    transition: none;
  }
}