.page-faq {
  --faq-cut: 14px;
  --faq-cut-sm: 9px;
  --faq-rule: rgba(142, 154, 155, 0.42);
  --faq-rule-soft: rgba(142, 154, 155, 0.22);
  padding-top: 22px;
  padding-bottom: 0;
  color: var(--ink);
}

/* 面包屑 */
.page-faq .crumbs {
  margin-bottom: 20px;
}
.page-faq .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-faq .crumbs__link,
.page-faq .crumbs__current {
  color: var(--silver);
  text-decoration: none;
}
.page-faq .crumbs__link:hover {
  color: var(--cinnabar);
  text-decoration: underline;
}
.page-faq .crumbs__current {
  color: var(--green-800);
}

/* 首屏封面 */
.page-faq .faq-cover {
  display: grid;
  gap: 26px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--faq-rule-soft);
}
.page-faq .faq-cover h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--green-900);
}
.page-faq .faq-cover .lede {
  margin: 0;
  max-width: 40rem;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .section__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
}
.page-faq .faq-cover__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-rule-soft);
}
.page-faq .faq-cover__stats dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--silver);
}
.page-faq .faq-cover__stats dd {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 30px);
  color: var(--gold-deep);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-cover__stats .unit {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-soft);
}

/* 图片容器通用 */
.page-faq .media-frame {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  background: var(--green-800);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}
.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .media-frame__cap {
  margin: 0;
  padding: 10px 14px;
  background: var(--green-900);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--paper-2);
}
.page-faq .faq-banner {
  margin-top: 26px;
}

/* 目录锚点条 */
.page-faq .faq-anchor {
  position: sticky;
  top: 64px;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 24px 0 34px;
  padding: 8px 12px;
  overflow-x: auto;
  background: var(--green-800);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-sm)) 0, 100% var(--faq-cut-sm), 100% 100%, 0 100%);
}
.page-faq .faq-anchor .anchor-rail__title {
  flex: 0 0 auto;
  margin: 0;
  padding-right: 10px;
  border-right: 1px solid rgba(201, 162, 83, 0.45);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.page-faq .faq-anchor__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-anchor .anchor-rail__link {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--paper);
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease;
}
.page-faq .faq-anchor .anchor-rail__link:hover,
.page-faq .faq-anchor .anchor-rail__link:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}
.page-faq .faq-anchor .anchor-rail__link[data-active] {
  border-color: var(--cinnabar);
  color: var(--gold);
}

/* 通用小节标题 */
.page-faq .section__head {
  max-width: 46rem;
}
.page-faq .section__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 5.4vw, 32px);
  line-height: 1.3;
  color: var(--green-900);
}
.page-faq .section__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* 检索区 */
.page-faq .faq-lookup {
  padding-bottom: 8px;
}
.page-faq .faq-search {
  margin-top: 22px;
  padding: 18px 18px 16px;
  border-left: 4px solid var(--cinnabar);
  background: var(--paper-2);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}
.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green-800);
}
.page-faq .faq-search__input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 13px 15px;
  border: 1px solid var(--faq-rule);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--ink);
  appearance: none;
}
.page-faq .faq-search__input::placeholder {
  color: var(--silver);
}
.page-faq .faq-search__input:focus {
  outline: 2px solid var(--cinnabar);
  outline-offset: 1px;
  border-color: var(--cinnabar);
}
.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}
.page-faq .faq-quick__title {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
}
.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-quick .chip {
  display: inline-block;
  padding: 7px 12px;
  background: var(--green-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
  transition: background-color 200ms ease, color 200ms ease;
}
.page-faq .faq-quick .chip:hover,
.page-faq .faq-quick .chip:focus-visible {
  background: var(--gold);
  color: var(--green-900);
}

/* 折叠分组 */
.page-faq .faq-groups {
  padding-top: 44px;
}
.page-faq .faq-fold {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.page-faq .faq-fold__sum {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  background: var(--green-700);
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-sm)) 0, 100% var(--faq-cut-sm), 100% 100%, 0 100%);
  transition: background-color 200ms ease;
}
.page-faq .faq-fold__sum::-webkit-details-marker {
  display: none;
}
.page-faq .faq-fold__sum:hover {
  background: var(--green-800);
}
.page-faq .faq-fold__sum:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}
.page-faq .faq-fold__no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
}
.page-faq .faq-fold__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}
.page-faq .faq-fold__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--silver);
}
.page-faq .faq-fold__arrow {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(-45deg);
  transition: transform 240ms ease;
}
.page-faq .faq-fold__item[open] .faq-fold__arrow {
  transform: rotate(45deg);
}
.page-faq .faq-fold__body {
  padding: 18px 0 26px;
}

/* 术语卡片错落堆叠 */
.page-faq .faq-terms {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .term-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  column-gap: 14px;
  padding: 15px 18px 14px 14px;
  border: 1px solid var(--faq-rule-soft);
  border-left: 3px solid var(--silver);
  background: var(--paper);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color 200ms ease, background-color 200ms ease;
}
.page-faq .term-card:hover {
  border-left-color: var(--gold);
  background: #F7F4EC;
}
.page-faq .term-card__no {
  grid-column: 1;
  grid-row: 1 / span 3;
  padding-right: 10px;
  border-right: 1px solid var(--faq-rule-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-deep);
  text-decoration: none;
}
.page-faq .term-card__no:hover,
.page-faq .term-card__no:focus-visible {
  color: var(--cinnabar);
  text-decoration: underline;
}
.page-faq .term-card__name {
  grid-column: 2;
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--green-900);
}
.page-faq .term-card__desc {
  grid-column: 2;
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-faq .term-card__ver {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--silver);
}

/* 呼吸区 */
.page-faq .breath {
  margin: 44px 0;
  text-align: center;
}
.page-faq .breath__line {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 4vw, 26px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--green-800);
}
.page-faq .breath__line::after {
  content: "";
  display: block;
  width: 56px;
  height: 2px;
  margin: 16px auto 0;
  background: var(--cinnabar);
}

/* 返水数据区 */
.page-faq .faq-rebate {
  padding-top: 6px;
}
.page-faq .faq-rebate__grid {
  display: grid;
  gap: 22px;
  margin-top: 22px;
}
.page-faq .faq-chart {
  padding: 16px 14px 14px;
  background: var(--green-900);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}
.page-faq .faq-chart__cap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--paper-2);
}
.page-faq .faq-chart__cap .tag-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cinnabar);
  transition: transform 200ms ease;
}
.page-faq .faq-chart:hover .tag-dot {
  transform: scale(1.4);
}
.page-faq .faq-chart__scroll {
  overflow-x: auto;
}
.page-faq .faq-chart svg {
  display: block;
  width: 100%;
  min-width: 520px;
  height: auto;
}
.page-faq .faq-chart .ch-grid line {
  stroke: rgba(142, 154, 155, 0.26);
  stroke-width: 1;
}
.page-faq .faq-chart .ch-axis text {
  fill: var(--silver);
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: 0.04em;
}
.page-faq .faq-chart .ch-upper {
  fill: none;
  stroke: var(--gold);
  stroke-width: 3;
  stroke-linejoin: round;
}
.page-faq .faq-chart .ch-lower {
  fill: none;
  stroke: var(--silver);
  stroke-width: 2;
  stroke-dasharray: 7 7;
}
.page-faq .faq-chart .ch-dots circle {
  fill: var(--gold);
}
.page-faq .faq-chart .ch-now {
  fill: var(--cinnabar);
}
.page-faq .faq-chart__note {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--silver);
}

/* 旁注栏 */
.page-faq .faq-side {
  display: grid;
  gap: 12px;
  align-content: start;
}
.page-faq .faq-side .note-rail__title {
  margin: 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--faq-rule-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green-800);
}
.page-faq .faq-side .note-rail__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-side__fig {
  margin-top: 4px;
}

/* 表格区 */
.page-faq .faq-table-scroll {
  margin-top: 26px;
  overflow-x: auto;
  border: 1px solid var(--faq-rule-soft);
}
.page-faq .faq-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-table caption {
  padding: 13px 16px;
  background: var(--paper-2);
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--green-800);
}
.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--faq-rule-soft);
  text-align: left;
  font-size: 14px;
  font-weight: 400;
  color: var(--ink);
}
.page-faq .faq-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--green-800);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--paper);
}
.page-faq .faq-table tbody tr {
  background: var(--paper);
}
.page-faq .faq-table tbody tr:nth-child(even) {
  background: var(--paper-2);
}
.page-faq .faq-table tbody th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--gold-deep);
}
.page-faq .faq-table th:first-child,
.page-faq .faq-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 1;
  background: inherit;
  box-shadow: 2px 0 0 var(--faq-rule-soft);
}
.page-faq .faq-table thead th:first-child {
  background: var(--green-800);
}
.page-faq .faq-table tbody tr.is-current {
  background: #F0DCD4;
}
.page-faq .faq-table tbody tr.is-current td,
.page-faq .faq-table tbody tr.is-current th {
  font-weight: 700;
  color: var(--green-900);
}
.page-faq .faq-table tbody tr.is-current th:first-child {
  box-shadow: inset 4px 0 0 var(--cinnabar), 2px 0 0 var(--faq-rule-soft);
}
.page-faq .faq-table__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-faq .faq-table__foot a {
  color: var(--gold-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
}
.page-faq .faq-table__foot a:hover {
  color: var(--cinnabar);
}

/* 常见疑问 */
.page-faq .faq-ask {
  padding-top: 48px;
}
.page-faq .faq-ask__grid {
  display: grid;
  gap: 0;
  margin-top: 20px;
}
.page-faq .qa {
  border-top: 1px solid var(--faq-rule-soft);
}
.page-faq .qa:last-child {
  border-bottom: 1px solid var(--faq-rule-soft);
}
.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--green-900);
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q::before {
  content: "Q";
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 21px;
  height: 21px;
  margin-top: 2px;
  border: 1px solid var(--cinnabar);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cinnabar);
}
.page-faq .qa__q:hover {
  color: var(--gold-deep);
}
.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 2px;
}
.page-faq .qa__a {
  padding: 0 0 16px 33px;
}
.page-faq .qa__a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* 历史版本时间轴 */
.page-faq .faq-versions {
  padding-top: 48px;
}
.page-faq .faq-timeline {
  position: relative;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 22px;
  left: 68px;
  width: 2px;
  background: var(--faq-rule);
}
.page-faq .faq-timeline__item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 16px;
  padding-bottom: 22px;
}
.page-faq .faq-timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--gold-deep);
  font-variant-numeric: tabular-nums;
}
.page-faq .faq-timeline__body {
  position: relative;
  padding-left: 22px;
}
.page-faq .faq-timeline__body::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -15px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
}
.page-faq .faq-timeline__ver {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--green-800);
}
.page-faq .faq-timeline__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-versions__more {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-versions__more a {
  color: var(--gold-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
}
.page-faq .faq-versions__more a:hover {
  color: var(--cinnabar);
}

/* 下一步 */
.page-faq .faq-next {
  margin: 42px 0 56px;
  padding: 26px 20px 24px;
  background: var(--green-800);
  color: var(--paper);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}
.page-faq .faq-next__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 4.6vw, 26px);
  font-weight: 700;
  color: var(--paper);
}
.page-faq .faq-next__lead {
  margin: 0 0 20px;
  max-width: 44rem;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-2);
}
.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 桌面端 */
@media (min-width: 760px) {
  .page-faq .faq-cover {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }
  .page-faq .faq-cover__main {
    margin-left: 8.333%;
  }
  .page-faq .faq-cover__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 560px;
    margin-left: 8.333%;
  }
  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    padding-bottom: 20px;
  }
  .page-faq .faq-terms .term-card:nth-child(even) {
    transform: translateY(20px);
  }
  .page-faq .faq-ask__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 34px;
  }
  .page-faq .qa:nth-child(2) {
    border-top-color: var(--faq-rule-soft);
  }
  .page-faq .faq-timeline {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 30px;
  }
  .page-faq .faq-timeline::before {
    display: none;
  }
  .page-faq .faq-timeline__item {
    grid-template-columns: 66px 1fr;
    padding-bottom: 26px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-rebate__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
  .page-faq .faq-next {
    padding: 32px 30px 30px;
  }
  .page-faq .faq-groups {
    padding-top: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-fold__arrow,
  .page-faq .faq-fold__sum,
  .page-faq .term-card,
  .page-faq .faq-quick .chip,
  .page-faq .faq-chart__cap .tag-dot {
    transition: none;
  }
  .page-faq .faq-chart:hover .tag-dot {
    transform: none;
  }
}