.page-faq {
  --faq-radius: 6px;
  --faq-shadow: 0 1px 0 rgba(13, 13, 17, 0.04), 0 10px 28px rgba(13, 13, 17, 0.05);
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

/* ---------- 顶部斜切深色带 ---------- */
.page-faq .faq-headband {
  background: var(--ink);
  padding-top: calc(var(--header-h) + 14px);
  padding-bottom: 78px;
  clip-path: polygon(0 0, 100% 0, 100% 58%, 0 100%);
}
.page-faq .faq-headband__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
}
.page-faq .faq-headband .v28-crumb__link {
  color: rgba(247, 244, 239, 0.7);
  text-decoration: none;
  transition: color 240ms var(--ease);
}
.page-faq .faq-headband .v28-crumb__link:hover,
.page-faq .faq-headband .v28-crumb__link:focus-visible {
  color: var(--cyan);
}
.page-faq .faq-headband .v28-crumb__item--current {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--bone);
  padding: 44px 0 68px;
}
.page-faq .faq-hero__grid {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
  display: grid;
  gap: 34px;
  align-items: center;
}
.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--gray);
}
.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--red);
}
.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 88px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-faq .faq-hero__brand {
  display: block;
  color: var(--red);
}
.page-faq .faq-hero__lead {
  margin: 0 0 30px;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--gray);
}
.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 36px;
  margin: 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}
.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.page-faq .faq-hero__statnum {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-faq .faq-hero__statlabel {
  font-size: 13px;
  color: var(--gray);
}
.page-faq .faq-hero__figure {
  margin: 0;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--faq-radius);
  object-fit: cover;
  background: var(--paper);
}

/* ---------- 问答工作台 ---------- */
.page-faq .faq-desk {
  background: var(--bone);
  padding-bottom: 64px;
}
.page-faq .faq-desk__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
}
.page-faq .faq-desk__grid {
  display: grid;
  gap: 28px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

/* 目录 */
.page-faq .faq-toc {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}
.page-faq .faq-toc__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gray);
  border-bottom: 1px solid transparent;
  transition: color 240ms var(--ease), border-color 240ms var(--ease);
}
.page-faq .faq-toc__summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-toc__summary::marker {
  content: "";
}
.page-faq .faq-toc[open] .faq-toc__summary {
  border-bottom-color: var(--line-soft);
  color: var(--ink);
}
.page-faq .faq-toc__summaryNum {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--red);
}
.page-faq .faq-toc__list {
  margin: 0;
  padding: 6px 0;
  list-style: none;
  counter-reset: none;
}
.page-faq .faq-toc__item {
  margin: 0;
}
.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 11px 18px;
  border-left: 3px solid transparent;
  color: var(--ink);
  text-decoration: none;
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease);
}
.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(34, 211, 197, 0.09);
}
.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}
.page-faq .faq-toc__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
}
.page-faq .faq-toc__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}

/* 分组 */
.page-faq .faq-group {
  margin-bottom: 60px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-group:last-child {
  margin-bottom: 0;
}
.page-faq .faq-group__head {
  margin-bottom: 20px;
}
.page-faq .faq-group__num {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
}
.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-faq .faq-group__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}
.page-faq .faq-group__figure {
  margin: 0 0 24px;
}
.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  border-radius: var(--faq-radius);
  object-fit: cover;
  background: var(--paper);
}

/* 答案卡片 */
.page-faq .faq-group__list {
  display: grid;
  gap: 12px;
}
.page-faq .faq-card {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  box-shadow: var(--faq-shadow);
  transition: border-color 280ms var(--ease), box-shadow 280ms var(--ease);
}
.page-faq .faq-card[open] {
  border-color: rgba(34, 211, 197, 0.55);
  box-shadow: 0 1px 0 rgba(13, 13, 17, 0.04), 0 16px 36px rgba(13, 13, 17, 0.08);
}
.page-faq .faq-card__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 14px;
  min-height: 48px;
  padding: 19px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
}
.page-faq .faq-card__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-card__q::marker {
  content: "";
}
.page-faq .faq-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--gray);
}
.page-faq .faq-card[open] .faq-card__idx {
  color: var(--cyan-deep);
}
.page-faq .faq-card__qtext {
  min-width: 0;
}
.page-faq .faq-card__mark {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  align-self: center;
}
.page-faq .faq-card__mark::before,
.page-faq .faq-card__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 2px;
  margin-top: -1px;
  background: var(--gray);
  transition: transform 280ms var(--ease), background-color 280ms var(--ease);
}
.page-faq .faq-card__mark::after {
  transform: rotate(90deg);
}
.page-faq .faq-card[open] .faq-card__mark::after {
  transform: rotate(0deg);
}
.page-faq .faq-card[open] .faq-card__mark::before,
.page-faq .faq-card[open] .faq-card__mark::after {
  background: var(--red);
}
.page-faq .faq-card__body {
  padding: 0 18px 20px;
}
.page-faq .faq-card__text {
  margin: 0 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

/* 跳转条 */
.page-faq .faq-ops {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.page-faq .faq-ops__btn {
  font-size: 14px;
}
.page-faq .faq-ops__btn:hover,
.page-faq .faq-ops__btn:focus-visible {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper);
}
.page-faq .faq-ops__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
  opacity: 1;
  transform: none;
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

/* ---------- 联系与响应 ---------- */
.page-faq .faq-help {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: 66px 0 70px;
}
.page-faq .faq-help__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
}
.page-faq .faq-help__grid {
  display: grid;
  gap: 34px;
}
.page-faq .faq-help__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gray);
}
.page-faq .faq-help__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-faq .faq-help__text {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}
.page-faq .faq-help__side {
  border-left: 3px solid var(--red);
  padding: 4px 0 4px 20px;
}
.page-faq .faq-help__sideTitle {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
}
.page-faq .faq-help__list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}
.page-faq .faq-help__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  color: var(--gray);
}
.page-faq .faq-help__item:last-child {
  border-bottom: 0;
}
.page-faq .faq-help__itemNum {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-deep);
}
.page-faq .faq-help__mail {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-faq .faq-help__mailLabel {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gray);
}
.page-faq .faq-help__mailValue {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ink);
  word-break: break-all;
}

/* ---------- 兜底入口 ---------- */
.page-faq .faq-fallback {
  background: var(--ink);
  color: var(--bone);
  padding: 82px 0 92px;
  clip-path: polygon(0 44px, 100% 0, 100% 100%, 0 100%);
}
.page-faq .faq-fallback__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-l);
  padding-right: var(--pad-r);
}
.page-faq .faq-fallback__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.page-faq .faq-fallback__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--bone);
}
.page-faq .faq-fallback__lead {
  margin: 0 0 34px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 244, 239, 0.68);
}
.page-faq .faq-fallback__cards {
  display: grid;
  gap: 14px;
}
.page-faq .faq-fallback__card {
  display: block;
  padding: 22px 20px 24px;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--faq-radius);
  color: var(--bone);
  text-decoration: none;
  transition: transform 280ms var(--ease), border-color 280ms var(--ease), background-color 280ms var(--ease);
}
.page-faq .faq-fallback__card:hover,
.page-faq .faq-fallback__card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: rgba(34, 211, 197, 0.1);
}
.page-faq .faq-fallback__cardnum {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}
.page-faq .faq-fallback__cardtitle {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
}
.page-faq .faq-fallback__carddesc {
  display: block;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(247, 244, 239, 0.66);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    column-gap: 56px;
    align-items: start;
  }
  .page-faq .faq-fallback__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding: 52px 0 84px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: 60px;
  }
  .page-faq .faq-card__q {
    padding: 22px 26px;
    font-size: 17px;
  }
  .page-faq .faq-card__body {
    padding: 0 26px 24px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-desk__grid {
    grid-template-columns: 264px minmax(0, 1fr);
    column-gap: 64px;
    align-items: start;
  }
  .page-faq .faq-desk__side {
    position: sticky;
    top: calc(var(--header-h) + 18px);
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-fallback__cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 悬停提示仅在支持悬停的设备上隐藏 ---------- */
@media (hover: hover) {
  .page-faq .faq-ops__hint {
    opacity: 0;
    transform: translateX(-6px);
  }
  .page-faq .faq-ops:hover .faq-ops__hint,
  .page-faq .faq-ops:focus-within .faq-ops__hint {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 展开高度过渡 ---------- */
@supports (interpolate-size: allow-keywords) {
  .page-faq .faq-card {
    interpolate-size: allow-keywords;
  }
  .page-faq .faq-card::details-content {
    block-size: 0;
    overflow: hidden;
    transition: block-size 340ms var(--ease), content-visibility 340ms var(--ease);
  }
  .page-faq .faq-card[open]::details-content {
    block-size: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-card__mark::before,
  .page-faq .faq-card__mark::after,
  .page-faq .faq-toc__link,
  .page-faq .faq-ops__hint,
  .page-faq .faq-ops__btn,
  .page-faq .faq-fallback__card {
    transition: none;
  }
  .page-faq .faq-fallback__card:hover,
  .page-faq .faq-fallback__card:focus-visible {
    transform: none;
  }
  .page-faq .faq-card::details-content {
    transition: none;
  }
}