.page-faq {
  --faq-rail: 220px;
  --faq-gap: clamp(28px, 4vw, 64px);

  background: var(--sand);
  color: var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: clamp(24px, 4vw, 44px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--rock);
}
.page-faq .breadcrumb a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .breadcrumb a:hover {
  color: var(--pine);
  border-bottom-color: var(--sun);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(28px, 5vw, 56px) clamp(36px, 5vw, 64px);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}
.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(40px, 8vw, 84px);
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--pine);
}
.page-faq .faq-hero__lede {
  max-width: 34ch;
  margin-top: 20px;
}

.page-faq .faq-hero__facts {
  display: grid;
  gap: 10px;
  align-self: end;
}
.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  border-radius: var(--r-sm);
  background: var(--sun-soft);
}
.page-faq .faq-fact:nth-child(2) {
  background: var(--lake-mist);
}
.page-faq .faq-fact__value {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--pine);
}
.page-faq .faq-fact__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--rock);
}

.page-faq .faq-hero__figure {
  margin-top: clamp(28px, 4vw, 52px);
}
.page-faq .faq-figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-main {
  padding-block: clamp(36px, 5vw, 72px) clamp(56px, 7vw, 104px);
}
.page-faq .faq-body {
  display: grid;
  gap: var(--faq-gap);
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--rock);
}
.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--paper);
  color: var(--pine);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-rail__link .mono {
  font-size: 12px;
  color: var(--lake);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-rail__link:hover {
  border-color: var(--sun);
  color: var(--lake);
}
.page-faq .faq-rail__link[aria-current="location"] {
  background: var(--lake);
  border-color: var(--lake);
  color: var(--paper);
}
.page-faq .faq-rail__link[aria-current="location"] .mono {
  color: var(--sun-soft);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 104px;
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 80px);
}
.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 6px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--pine);
}
.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.2;
  color: var(--pine);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  position: relative;
  padding-left: 0;
  border-bottom: 1px solid var(--line-warm);
  transition: padding-left var(--dur) var(--ease);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--lake);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .24s var(--ease);
}
.page-faq .faq-item[open] {
  padding-left: 14px;
}
.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q__idx {
  flex: none;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lake);
}
.page-faq .faq-q__text {
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--pine);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-q__sign {
  position: relative;
  flex: none;
  align-self: center;
  width: 18px;
  height: 18px;
  margin-left: auto;
}
.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background: var(--lake);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-faq .faq-q__sign::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
}
.page-faq .faq-q__sign::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
}
.page-faq .faq-item[open] .faq-q__sign::after {
  transform: scaleY(0);
}
.page-faq .faq-q:hover .faq-q__text {
  color: var(--lake);
}
.page-faq .faq-q:hover .faq-q__sign::before,
.page-faq .faq-q:hover .faq-q__sign::after {
  background: var(--sun);
}

.page-faq .faq-a {
  max-width: 64ch;
  padding: 0 0 22px clamp(0px, 3vw, 30px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-faq .faq-a p {
  margin: 0 0 10px;
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

/* ---------- 正文内链 ---------- */
.page-faq .faq-panels a:not(.btn) {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-panels a:not(.btn):hover {
  color: var(--pine);
  border-bottom-color: var(--sun);
}

/* ---------- 提示条 ---------- */
.page-faq .faq-hint {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 18px 0 6px;
  padding: 16px 20px;
  border-left: 3px solid var(--sun);
  border-radius: var(--r-sm);
  background: var(--sun-soft);
  font-size: 15px;
  line-height: 1.75;
  color: var(--pine);
}
.page-faq .faq-hint__tag {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cinnabar);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 30px 0 0;
}
.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

/* ---------- 联系客服卡 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--r-lg);
  background: var(--pine);
  color: var(--on-dark-strong);
}
.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 164, 65, .3), rgba(217, 164, 65, 0) 68%);
  pointer-events: none;
}
.page-faq .faq-contact__eyebrow {
  position: relative;
  margin: 0;
  color: var(--sun-soft);
}
.page-faq .faq-contact__title {
  position: relative;
  margin: 12px 0 0;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.15;
  color: var(--on-dark-strong);
}
.page-faq .faq-contact__lead {
  position: relative;
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-dark);
}
.page-faq .faq-contact__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.page-faq .faq-contact .btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(245, 240, 230, .38);
}
.page-faq .faq-contact .btn--ghost:hover {
  border-color: var(--sun);
  color: var(--sun-soft);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    padding-bottom: 0;
    overflow: visible;
  }
  .page-faq .faq-rail__link {
    justify-content: flex-start;
    width: 100%;
    padding: 9px 12px;
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
  }
  .page-faq .faq-rail__link:hover {
    background: var(--lake-mist);
    border-color: transparent;
  }
  .page-faq .faq-rail__link[aria-current="location"] {
    background: var(--lake);
    border-color: var(--lake);
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-hero__title {
    letter-spacing: -.02em;
  }
  .page-faq .faq-a {
    padding-left: 0;
    padding-bottom: 18px;
  }
  .page-faq .faq-item[open] {
    padding-left: 12px;
  }
  .page-faq .faq-q {
    gap: 8px;
    padding: 16px 0;
  }
  .page-faq .faq-hint {
    flex-direction: column;
    gap: 6px;
    padding: 14px 16px;
  }
  .page-faq .faq-contact__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}