/* ============ 核对知识库 / knowledge (faq) ============ */

.page-faq {
  --kb-line: rgba(78, 90, 97, .22);
  --kb-line-soft: rgba(78, 90, 97, .1);
  --kb-line-dark: rgba(174, 186, 192, .22);
  background: var(--mist);
  color: var(--rock);
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */

.page-faq .kb-hero {
  padding: clamp(28px, 7vw, 76px) 0 clamp(24px, 4vw, 44px);
  background:
    linear-gradient(180deg, #E8F0F3 0%, rgba(243, 246, 247, 0) 78%),
    var(--mist);
  border-bottom: 1px solid var(--kb-line);
}

.page-faq .kb-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  margin-top: 22px;
}

.page-faq .kb-hero__title {
  margin: 12px 0 0;
  color: var(--lake-deep);
  font-size: clamp(29px, 6.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  max-width: 17em;
}

.page-faq .kb-hero__lead {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.66;
  color: var(--rock);
}

.page-faq .kb-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--kb-line);
  border: 1px solid var(--kb-line);
}

.page-faq .kb-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--mist);
}

.page-faq .kb-stats__num {
  font-family: var(--font-mono);
  font-size: 27px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--lake);
}

.page-faq .kb-stats__label {
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--rock);
}

/* ---------- 速查条 ---------- */

.page-faq .kb-quick {
  background: var(--lake-deep);
  border-bottom: 1px solid rgba(174, 186, 192, .18);
  z-index: 5;
}

.page-faq .kb-quick__inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-faq .kb-quick__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--rock-light);
  text-transform: uppercase;
}

.page-faq .kb-quick__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .kb-chip {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: #CFE3EA;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(174, 186, 192, .28);
  text-decoration: none;
  transition: color .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .kb-chip:hover,
.page-faq .kb-chip:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

/* ---------- 速查表 ---------- */

.page-faq .kb-fit {
  padding-top: clamp(36px, 6vw, 64px);
}

.page-faq .kb-fit__head {
  max-width: 46em;
  margin-bottom: 22px;
}

.page-faq .kb-fit__head .h-section {
  margin: 10px 0 8px;
  color: var(--lake-deep);
}

.page-faq .kb-fit__head .note {
  color: var(--rock);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .kb-fit__tablewrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--kb-line);
}

.page-faq .kb-fit__table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
}

.page-faq .kb-fit__table thead th {
  background: var(--lake-deep);
  color: #D8E9EF;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .1em;
  text-align: left;
  padding: 12px 16px;
  white-space: nowrap;
}

.page-faq .kb-fit__table td {
  padding: 13px 16px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--rock);
  border-bottom: 1px solid var(--kb-line-soft);
  vertical-align: top;
}

.page-faq .kb-fit__table tbody tr:nth-child(even) {
  background: rgba(20, 106, 140, .045);
}

.page-faq .kb-fit__table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .kb-fit__table .num {
  font-family: var(--font-mono);
  color: var(--lake-deep);
  white-space: nowrap;
}

/* ---------- 问题组 ---------- */

.page-faq .kb-groups {
  padding-top: clamp(32px, 5vw, 52px);
}

.page-faq .kb-group {
  border-left: 2px solid var(--kb-line);
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .kb-group[open] {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(229, 255, 79, .26), rgba(229, 255, 79, 0) 220px);
}

.page-faq .kb-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 20px 16px 20px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .kb-group__head:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-faq .kb-group__num {
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--rock-light);
  transition: color .25s var(--ease);
}

.page-faq .kb-group[open] .kb-group__num {
  color: var(--lake);
}

.page-faq .kb-group__title {
  display: block;
  margin: 0;
  font-size: clamp(18px, 3.6vw, 23px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--lake-deep);
}

.page-faq .kb-group__hint {
  display: block;
  margin-top: 5px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--rock);
}

.page-faq .kb-group__mark {
  align-self: center;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--lake-deep);
  border: 1px solid var(--kb-line);
  transition: background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .kb-group__mark::after {
  content: "+";
}

.page-faq .kb-group[open] .kb-group__mark {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-faq .kb-group[open] .kb-group__mark::after {
  content: "–";
}

.page-faq .kb-group__body {
  padding: 4px 16px 28px 18px;
}

/* ---------- 问答 ---------- */

.page-faq .kb-qa {
  padding: 18px 0;
  border-top: 1px solid var(--kb-line-soft);
}

.page-faq .kb-qa:first-child {
  border-top: none;
  padding-top: 6px;
}

.page-faq .kb-qa__q {
  display: flex;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--lake-deep);
}

.page-faq .kb-qa__q::before {
  content: "›";
  flex: none;
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--lake);
}

.page-faq .kb-qa__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.66;
}

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

.page-faq .kb-qa__a .tag {
  margin-bottom: 0;
}

/* ---------- 步骤 ---------- */

.page-faq .kb-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .kb-steps li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 15px;
  line-height: 1.6;
}

.page-faq .kb-steps__num {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  color: var(--lake-deep);
  background: rgba(20, 106, 140, .09);
  border: 1px solid var(--kb-line);
}

/* ---------- 插图 ---------- */

.page-faq .kb-fig {
  margin: 20px 0 0;
  border: 1px solid var(--kb-line);
  background: #fff;
  overflow: hidden;
}

.page-faq .kb-fig__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: linear-gradient(140deg, #DCE9EE 0%, #B9CFD8 55%, #93B3C0 100%);
}

.page-faq .kb-fig__cap {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  line-height: 1.5;
  color: #C4D7DE;
  background: var(--lake-deep);
}

/* ---------- 收尾联系区 ---------- */

.page-faq .kb-help {
  background: var(--ink);
  color: #C9DAE0;
  padding: clamp(48px, 7vw, 80px) 0;
  border-top: 1px solid rgba(174, 186, 192, .16);
}

.page-faq .kb-help__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .kb-help__text .eyebrow {
  color: var(--term);
}

.page-faq .kb-help__text .h-section {
  margin: 10px 0 14px;
  color: #F0F6F8;
  letter-spacing: -0.01em;
}

.page-faq .kb-help__text p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.68;
  color: #A7BFC8;
  max-width: 34em;
}

.page-faq .kb-help__text .link-more {
  color: var(--lime);
}

.page-faq .kb-help__note {
  font-size: 13px !important;
  color: #7E9AA4 !important;
}

.page-faq .kb-help__list {
  margin: 0;
  border-top: 1px solid var(--kb-line-dark);
}

.page-faq .kb-help__row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--kb-line-dark);
  font-size: 15px;
  line-height: 1.55;
}

.page-faq .kb-help__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: #7E9AA4;
  padding-top: 3px;
}

.page-faq .kb-help__row dd {
  margin: 0;
  color: #E6F0F3;
  word-break: break-word;
}

.page-faq .kb-help__row dd a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(229, 255, 79, .38);
}

.page-faq .kb-help__row dd a:hover,
.page-faq .kb-help__row dd a:focus-visible {
  border-bottom-color: var(--lime);
}

/* ---------- 宽屏 ---------- */

@media (min-width: 900px) {

  .page-faq .kb-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 56px;
    align-items: end;
  }

  .page-faq .kb-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .kb-quick {
    position: sticky;
    top: 0;
  }

  .page-faq .kb-quick__inner {
    flex-direction: row;
    align-items: center;
    gap: 20px;
  }

  .page-faq .kb-group__head {
    padding: 26px 24px 26px 28px;
  }

  .page-faq .kb-group__body {
    padding: 8px 24px 36px 28px;
    max-width: 78ch;
  }

  .page-faq .kb-qa__q {
    font-size: 16.5px;
  }

  .page-faq .kb-help__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 72px;
  }
}

@media (min-width: 1200px) {
  .page-faq .kb-group__head {
    padding-left: 34px;
  }

  .page-faq .kb-group__body {
    padding-left: 34px;
  }
}

/* ---------- 减少动效 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-chip,
  .page-faq .kb-group,
  .page-faq .kb-group__num,
  .page-faq .kb-group__mark {
    transition: none;
  }
}