/* ===== 答疑中心 页面专属样式（作用域 .page-faq） ===== */

.page-faq {
  padding-bottom: 76px;
}

/* ---------- 首屏头部 ---------- */
.page-faq .faq-head {
  display: grid;
  gap: 22px;
  padding: 36px 0 26px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head__title {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-size: 30px;
  line-height: 1.26;
  letter-spacing: .02em;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .faq-head__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--bone-78);
}

/* 右侧概览面板 */
.page-faq .faq-head__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  align-self: start;
  background: var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-meta__row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 13px 14px 15px;
  background: var(--panel);
}

.page-faq .faq-meta__k {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--bone-46);
}

.page-faq .faq-meta__v {
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.4;
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 主题速查条 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: 8px;
  padding: 22px 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-snap-type: x proximity;
}

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

.page-faq .faq-jump__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
  padding: 9px 16px;
  font-size: 14px;
  line-height: 1.4;
  letter-spacing: .02em;
  color: var(--bone-62);
  background: var(--layer);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  color: var(--ink);
  background: var(--cyan);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-groups {
  padding-top: 18px;
}

.page-faq .faq-group {
  padding: 32px 0 6px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-faq .faq-group:first-child {
  padding-top: 24px;
  border-top: 0;
}

.page-faq .faq-group__no {
  display: block;
  padding-top: 2px;
  font-family: var(--font-data);
  font-size: 19px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.34;
  letter-spacing: .04em;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .faq-group__note {
  max-width: 58ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--bone-62);
}

/* ---------- 单条问答（原生 details 手风琴） ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 19px 46px 19px 0;
  list-style: none;
  font-size: 16px;
  line-height: 1.65;
  color: var(--bone);
  cursor: pointer;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover {
  color: var(--cyan-soft);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 展开箭头 */
.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  top: 23px;
  right: 14px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .26s var(--ease), top .26s var(--ease);
}

.page-faq .faq-item[open] summary {
  color: var(--cyan-soft);
}

.page-faq .faq-item[open] summary::after {
  top: 27px;
  transform: rotate(225deg);
}

/* 答案区 */
.page-faq .faq-a p {
  max-width: 66ch;
  margin: 0 0 22px;
  padding: 16px 20px 18px;
  background: linear-gradient(100deg, rgba(56, 242, 200, .075), rgba(56, 242, 200, .012));
  border-left: 2px solid var(--cyan);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--bone-78);
}

.page-faq .faq-a a {
  color: var(--cyan-soft);
  border-bottom: 1px solid rgba(155, 246, 224, .4);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-a a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 10px;
  padding: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--bone-46);
}

/* ---------- 收尾行动区 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 42px;
  padding: 26px 22px;
  background: linear-gradient(115deg, var(--panel) 0%, var(--panel-2) 100%);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-faq .faq-cta__text {
  flex: 1 1 260px;
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: .02em;
  color: var(--bone);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-head {
    padding: 46px 0 30px;
  }

  .page-faq .faq-head__title {
    font-size: 38px;
    line-height: 1.2;
  }

  .page-faq .faq-head__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-meta__row {
    padding: 15px 18px 17px;
  }

  .page-faq .faq-meta__v {
    font-size: 15px;
  }

  .page-faq .faq-cta {
    padding: 30px 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 30px;
    padding: 42px 0 10px;
  }

  .page-faq .faq-group:first-child {
    padding-top: 28px;
  }

  .page-faq .faq-group__rail {
    position: relative;
  }

  .page-faq .faq-group__no {
    position: sticky;
    top: 112px;
    font-size: 25px;
  }

  .page-faq .faq-group__title {
    font-size: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 1fr) 268px;
    align-items: end;
    gap: 48px;
    padding: 58px 0 34px;
  }

  .page-faq .faq-head__meta {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-meta__row {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    padding: 15px 20px;
  }

  .page-faq .faq-group__body {
    max-width: 800px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-head__title {
    font-size: 46px;
    line-height: 1.16;
    max-width: 22ch;
  }

  .page-faq .faq-jump {
    padding-top: 26px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-jump__item,
  .page-faq .faq-a a {
    transition: none;
  }
}