.page-faq {
  --faq-gap: clamp(20px, 3vw, 34px);
  --faq-cut: 16px;
  padding-top: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

/* 顶部窄幅氛围图 */
.page-faq .faq-hero {
  position: relative;
}

.page-faq .faq-hero__frame {
  margin: 0;
  aspect-ratio: 1600 / 420;
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-hero__frame .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.08) brightness(0.86);
}

.page-faq .faq-hero__frame .media-frame__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--green);
  background: rgba(5, 7, 10, 0.72);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 6px 12px;
}

/* 首屏文字 */
.page-faq .faq-intro {
  margin-top: clamp(28px, 5vw, 56px);
}

.page-faq .faq-intro__index {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin: 0;
}

.page-faq .faq-intro__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5.6vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 20ch;
}

.page-faq .faq-intro__lead {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

/* 主题索引条 */
.page-faq .faq-jump {
  margin-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-jump__list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease), color 240ms var(--ease);
}

.page-faq .faq-jump__link .mono {
  font-size: 12px;
  color: var(--blue);
  letter-spacing: 0.06em;
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--green);
  background: var(--green-glow);
  color: var(--green);
}

/* 分组网格 */
.page-faq .faq-groups {
  margin-top: clamp(32px, 5vw, 62px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-group {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 1px;
  background: var(--green);
  opacity: 0.7;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 1 / -1;
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-group__body {
  margin-top: 6px;
}

/* 折叠问答 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 6px 18px 16px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  transition: color 240ms var(--ease), background-color 240ms var(--ease);
}

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

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: var(--green);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 240ms var(--ease);
}

.page-faq .faq-q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  margin-left: auto;
  border-right: 2px solid var(--graphite);
  border-bottom: 2px solid var(--graphite);
  transform: rotate(45deg);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-faq .faq-item[open] > .faq-q::before {
  transform: scaleY(1);
}

.page-faq .faq-item[open] > .faq-q::after {
  border-color: var(--green);
  transform: rotate(-135deg);
}

.page-faq .faq-q:hover {
  background: var(--green-glow);
}

.page-faq .faq-q:focus-visible {
  outline: 1px solid var(--blue);
  outline-offset: 2px;
}

.page-faq .faq-a {
  padding: 0 26px 20px 16px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-inline-link {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: color 240ms var(--ease), border-color 240ms var(--ease);
}

.page-faq .faq-inline-link:hover {
  color: var(--green);
  border-color: var(--green);
}

/* 组内配图 */
.page-faq .faq-group__media {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  aspect-ratio: 820 / 520;
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .faq-group__media .media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.8) contrast(1.1);
}

.page-faq .faq-group__media .media-frame__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--blue);
  background: rgba(5, 7, 10, 0.75);
  border-top: 1px solid var(--line);
  padding: 5px 10px;
}

/* 客服组 */
.page-faq .faq-group--wide {
  border-color: rgba(0, 229, 255, 0.28);
}

.page-faq .faq-group--wide::after {
  background: var(--blue);
  width: 72px;
}

/* 页面底部延伸入口 */
.page-faq .faq-next {
  margin-top: clamp(44px, 7vw, 88px);
}

.page-faq .faq-next__rule {
  height: 2px;
  margin-bottom: clamp(20px, 3vw, 32px);
  opacity: 0.8;
}

.page-faq .faq-next__title {
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1.25rem, 2.4vw, 1.75rem);
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-faq .faq-next__grid {
  align-items: stretch;
}

.page-faq .faq-next__card {
  display: block;
  margin-bottom: var(--faq-gap);
  padding: 22px 24px 26px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--white);
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  border-color: var(--green);
  background: linear-gradient(135deg, var(--green-glow), transparent 62%);
}

.page-faq .faq-next__card-index {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--blue);
  margin-bottom: 12px;
}

.page-faq .faq-next__card-title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-next__card-text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 平板及以上：两列不等宽 */
@media (min-width: 860px) {
  .page-faq .faq-intro__title {
    font-size: clamp(2.6rem, 5.2vw, 4.2rem);
  }

  .page-faq .faq-groups {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-faq .faq-group--wide {
    grid-column: 1 / -1;
  }

  .page-faq .faq-group__body--split {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-group__body--split .faq-item:nth-child(3) {
    grid-column: 1 / -1;
  }

  .page-faq .faq-next__card {
    margin-bottom: 0;
  }
}

/* 桌面：进一步拉开留白与索引感 */
@media (min-width: 1180px) {
  .page-faq .faq-jump__list {
    gap: 14px;
  }

  .page-faq .faq-group {
    padding: 38px 40px 32px;
  }

  .page-faq .faq-q {
    padding-right: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q::before,
  .page-faq .faq-q::after,
  .page-faq .faq-jump__link,
  .page-faq .faq-next__card,
  .page-faq .faq-inline-link {
    transition: none;
  }
}