.page-faq {
  --faq-rail-w: 236px;
  --faq-item-bg: #101A26;
  --faq-item-bg-hover: #16323B;
}

/* ---------- 头部 ---------- */
.page-faq .faq-head {
  position: relative;
  padding-block: 40px 28px;
  background:
    radial-gradient(115% 95% at 100% 0%, var(--glow-a), transparent 62%),
    radial-gradient(85% 90% at 0% 100%, var(--glow-b), transparent 58%);
}

.page-faq .faq-head__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-head__text .ui-breadcrumb {
  margin-bottom: 20px;
}

.page-faq .faq-head__text .ui-title {
  margin: 10px 0 0;
  max-width: 22ch;
}

.page-faq .faq-head__text .ui-lede {
  margin-top: 18px;
  max-width: 46ch;
}

.page-faq .faq-head__quick {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-head__quick a {
  display: inline-block;
  font-size: 13px;
  line-height: 1;
  padding: 9px 14px;
  color: var(--ice);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(127, 211, 232, .06);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
  transition: background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-head__quick a:hover,
.page-faq .faq-head__quick a:focus-visible {
  background: rgba(127, 211, 232, .16);
  border-color: var(--ice);
  color: var(--white);
}

.page-faq .faq-head__media {
  margin: 0;
  align-self: start;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding-block: 12px 72px;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 28px;
}

/* ---------- 左侧分类轨道 ---------- */
.page-faq .faq-rail {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 16px;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  color: var(--steel);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 14px;
  line-height: 1;
  padding: 10px 14px;
  color: var(--text-dim);
  background: var(--ink-2);
  border: 1px solid transparent;
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-rail__no {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ice);
  opacity: .8;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--white);
  border-color: var(--line);
}

.page-faq .faq-rail__link:target,
.page-faq .faq-rail__link.is-active {
  color: var(--white);
  border-color: var(--ice);
  background: var(--teal-deep);
}

.page-faq .faq-rail__hint {
  display: none;
  margin: 20px 0 0;
  color: var(--steel);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 24px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "no desc";
  column-gap: 14px;
  row-gap: 6px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  grid-area: no;
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--ice);
}

.page-faq .faq-group__title {
  grid-area: title;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

.page-faq .faq-group__desc {
  grid-area: desc;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  background: var(--faq-item-bg);
  border: 1px solid var(--line);
  margin-bottom: 10px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(127, 211, 232, .4);
  background: var(--faq-item-bg-hover);
}

.page-faq .faq-item[open] {
  border-color: rgba(127, 211, 232, .45);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 18px 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color .22s var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  color: var(--ice);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: -2px;
}

.page-faq .faq-item__chev {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-left: auto;
  margin-top: 7px;
  border-right: 2px solid var(--ice);
  border-bottom: 2px solid var(--ice);
  transform: rotate(45deg);
  transition: transform .28s var(--ease);
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(225deg);
  border-color: var(--lime);
}

.page-faq .faq-item__a {
  padding: 0 20px 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  animation: faq-drop .26s var(--ease) both;
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--lime);
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-strong {
  font-family: var(--font-data);
  font-size: 1.08em;
  font-weight: 700;
  color: var(--lime);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--lime);
}

/* ---------- 要点与等宽标签 ---------- */
.page-faq .faq-bullets {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-bullets > li {
  position: relative;
  padding-left: 18px;
}

.page-faq .faq-bullets > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--ice);
  transform: rotate(45deg);
}

.page-faq .faq-bullets b {
  color: var(--white);
  font-weight: 600;
}

.page-faq .faq-hint {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .faq-tag {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .06em;
  padding: 3px 8px;
  color: var(--ice);
  background: rgba(127, 211, 232, .1);
  border: 1px solid var(--line);
  border-left: 2px solid var(--lime);
}

/* ---------- 收藏章节的双列 ---------- */
.page-faq .faq-save__layout {
  display: grid;
  gap: 22px;
}

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

/* ---------- 联系收尾 ---------- */
.page-faq .faq-contact {
  --fc-ink: #17202B;
  --fc-dim: #4C5866;
  --fc-line: rgba(23, 32, 43, .16);
}

.page-faq .faq-contact .faq-group__head {
  border-bottom-color: var(--line);
}

.page-faq .faq-contact__panel {
  background: var(--paper);
  color: var(--fc-ink);
  padding: 22px 20px 24px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  display: grid;
  gap: 18px;
}

.page-faq .faq-contact__item {
  border-left: 3px solid var(--orange);
  padding-left: 14px;
}

.page-faq .faq-contact__key {
  margin: 0 0 5px !important;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #8A5A2C;
}

.page-faq .faq-contact__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fc-dim);
}

.page-faq .faq-contact__lines {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--fc-line);
  border-bottom: 1px solid var(--fc-line);
}

.page-faq .faq-contact__lines .contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 0;
  font-size: 14px;
}

.page-faq .faq-contact__lines .contact-line__key {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .1em;
  color: #8A5A2C;
  min-width: 42px;
  align-self: center;
}

.page-faq .faq-contact__lines a {
  color: var(--fc-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
}

.page-faq .faq-contact__lines a:hover {
  color: #B65A17;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--fc-dim);
}

.page-faq .faq-contact__note a {
  color: #B65A17;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-head {
    padding-block: 56px 36px;
  }

  .page-faq .faq-head__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: center;
    gap: 40px;
  }

  .page-faq .faq-head__media {
    align-self: center;
  }

  .page-faq .faq-save__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, .72fr);
    align-items: start;
    gap: 26px;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 20px 22px 18px 24px;
  }

  .page-faq .faq-item__a {
    padding: 0 24px 26px;
    font-size: 15px;
  }

  .page-faq .faq-contact__panel {
    padding: 28px 26px 30px;
    gap: 20px;
  }

  .page-faq .faq-contact__lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 24px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-head {
    padding-block: 68px 44px;
  }

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

  .page-faq .faq-body {
    padding-block: 20px 96px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 32px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 4px 0 4px 18px;
  }

  .page-faq .faq-rail__label {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: .24em;
    position: absolute;
    left: -34px;
    top: 4px;
    margin: 0;
    color: var(--steel);
  }

  .page-faq .faq-rail {
    position: sticky;
    padding-left: 24px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    padding: 11px 14px;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    clip-path: none;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(127, 211, 232, .07);
    border-left-color: var(--steel);
  }

  .page-faq .faq-rail__link:target,
  .page-faq .faq-rail__link.is-active {
    background: linear-gradient(90deg, rgba(127, 211, 232, .16), transparent 88%);
    border-left-color: var(--ice);
  }

  .page-faq .faq-rail__hint {
    display: block;
  }

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

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: 20px;
    padding-bottom: 18px;
    margin-bottom: 22px;
  }

  .page-faq .faq-group__no {
    font-size: 46px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__chev,
  .page-faq .faq-head__quick a,
  .page-faq .faq-rail__link {
    transition: none;
  }
}