.page-faq {
  --faq-rule: var(--line-soft);
  --faq-gap: clamp(52px, 6.5vw, 92px);
  padding-bottom: clamp(72px, 9vw, 120px);
}

.page-faq .crumbs {
  padding-top: 22px;
}

/* ── 首屏 ───────────────────────────────── */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4vw, 48px) 0 clamp(20px, 3vw, 32px);
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

.page-faq .faq-hero__axis {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber-500);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__axis {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 10px;
  }
}

.page-faq .faq-hero__axis-num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
}

.page-faq .faq-hero__axis-line {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--amber-500);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__axis-line {
    width: 1px;
    height: 46px;
  }
}

.page-faq .faq-hero__axis-label {
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--mist);
}

.page-faq .faq-hero__main .display-1 {
  margin: 12px 0 0;
  max-width: 18em;
}

.page-faq .faq-hero__main .lede {
  margin: 20px 0 0;
  max-width: var(--read);
  color: var(--mist);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-strong);
  border-block: 1px solid var(--line-strong);
}

@media (min-width: 780px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 18px 16px;
  background: var(--ink-900);
  min-width: 0;
}

.page-faq .faq-stats .stat__value {
  font-family: var(--mono);
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--amber-300);
  white-space: nowrap;
}

.page-faq .faq-stats .stat__label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-hero__rule {
  height: 22px;
  margin-top: clamp(26px, 3.5vw, 44px);
  border-bottom: 1px solid var(--line-soft);
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 28px);
  background-repeat: repeat-x;
  background-position: left top;
  background-size: 28px 10px;
}

/* ── 分类标签 ───────────────────────────── */

.page-faq .faq-tabs {
  display: flex;
  gap: 0;
  margin-top: 4px;
  padding-bottom: 2px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-tab {
  position: relative;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-right: 30px;
  padding: 14px 0 13px;
  font-size: 14px;
  letter-spacing: .05em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease);
}

.page-faq .faq-tab__n {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--amber-500);
}

.page-faq .faq-tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--amber-500);
  transition: right .22s var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  color: var(--paper);
}

.page-faq .faq-tab:hover::after,
.page-faq .faq-tab:focus-visible::after {
  right: 0;
}

.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--outline, var(--amber-500));
  outline-offset: 3px;
}

/* ── 主体两栏 ───────────────────────────── */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: clamp(24px, 3vw, 40px);
}

@media (min-width: 1120px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 96px;
    gap: 60px;
  }
}

.page-faq .faq-flow {
  min-width: 0;
}

/* ── 问答组 ─────────────────────────────── */

.page-faq .faq-group {
  padding-block: clamp(40px, 5vw, 68px);
  scroll-margin-top: 120px;
}

.page-faq .faq-group:first-child {
  padding-top: clamp(26px, 3vw, 40px);
}

.page-faq .faq-group .section__head {
  max-width: 46em;
}

.page-faq .faq-group .section__note {
  margin-top: 14px;
  color: var(--mist);
  max-width: var(--read);
}

.page-faq .faq-divider {
  height: 1px;
  background-image: repeating-linear-gradient(90deg, var(--line-strong) 0 1px, transparent 1px 11px);
}

/* ── 折叠问答 ───────────────────────────── */

.page-faq .qa-list {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa {
  position: relative;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa__q {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 14px;
  align-items: baseline;
  gap: 14px;
  padding: 18px 14px 18px 18px;
  margin-inline: -14px;
  border-radius: 3px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--amber-500);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .2s var(--ease);
}

.page-faq .qa[open] .qa__q::before {
  transform: scaleY(1);
}

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  background: var(--ink-700);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--outline, var(--amber-500));
  outline-offset: 2px;
}

.page-faq .qa__code {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--amber-500);
}

.page-faq .qa__text {
  font-size: clamp(16px, 1.6vw, 17px);
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .qa__mark {
  position: relative;
  align-self: center;
  width: 12px;
  height: 12px;
  justify-self: end;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--amber-500);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 5px;
  height: 1px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 5px;
  width: 1px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 26px 22px 18px;
  border-left: 2px solid transparent;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: var(--read);
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .qa__a .num {
  color: var(--celadon-200);
}

/* ── 图形容器 ───────────────────────────── */

.page-faq .media-frame {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .media-frame .media-frame__note {
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ── 刻度五档 ───────────────────────────── */

.page-faq .faq-marks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border-block: 1px solid var(--line-soft);
}

@media (min-width: 720px) {
  .page-faq .faq-marks {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-faq .faq-mark {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-700);
  border-top: 1px solid transparent;
  min-width: 0;
}

.page-faq .faq-mark__v {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--amber-300);
}

.page-faq .faq-mark__n {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-mark--ok {
  background: var(--ink-500);
  border-top-color: var(--celadon-500);
}

.page-faq .faq-mark--ok .faq-mark__v {
  color: var(--celadon-200);
}

.page-faq .faq-mark--top {
  border-top-color: var(--vermilion);
}

.page-faq .faq-scale-note {
  margin: 20px 0 0;
  max-width: var(--read);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ── 术语表 ─────────────────────────────── */

.page-faq .faq-glossary {
  width: 100%;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-glossary th,
.page-faq .faq-glossary td {
  text-align: left;
  vertical-align: top;
  padding: 15px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-glossary thead th {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .16em;
  color: var(--mist);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 12px;
}

.page-faq .faq-glossary tbody th {
  width: 34%;
  font-weight: 500;
}

@media (min-width: 700px) {
  .page-faq .faq-glossary tbody th {
    width: 30%;
  }
}

.page-faq .faq-glossary td {
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-term {
  display: block;
  position: relative;
  font-style: normal;
  font-size: 16px;
  font-weight: 500;
  color: var(--paper);
  cursor: help;
  border-bottom: 1px dotted var(--line-strong);
  width: fit-content;
}

.page-faq .faq-term__en {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--amber-500);
}

@media (hover: hover) {
  .page-faq .faq-term::after {
    content: attr(data-tip);
    position: absolute;
    left: 0;
    bottom: calc(100% + 8px);
    z-index: 5;
    display: block;
    width: max-content;
    max-width: 240px;
    padding: 8px 10px;
    border-radius: 3px;
    background: var(--ink-500);
    border: 1px solid var(--line-strong);
    font-family: var(--sans);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: 0;
    color: var(--paper);
    opacity: 0;
    transform: translateY(4px);
    pointer-events: none;
    transition: opacity .16s var(--ease), transform .16s var(--ease);
  }

  .page-faq .faq-term:hover::after,
  .page-faq .faq-term:focus-visible::after {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 查询路径 ───────────────────────────── */

.page-faq .faq-path {
  position: relative;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-path::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--line-strong);
}

.page-faq .faq-path__item {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 20px;
  padding-bottom: 30px;
}

.page-faq .faq-path__item:last-child {
  padding-bottom: 0;
}

.page-faq .faq-path__n {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--amber-500);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--amber-500);
}

.page-faq .faq-path__title {
  margin: 4px 0 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-faq .faq-path__body p {
  margin: 8px 0 0;
  max-width: var(--read);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-path__body a {
  color: var(--amber-300);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-path__body a:hover,
.page-faq .faq-path__body a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--amber-500);
}

/* ── 侧栏刻度 ───────────────────────────── */

.page-faq .faq-scale {
  display: none;
}

@media (min-width: 1120px) {
  .page-faq .faq-scale {
    display: block;
  }

  .page-faq .faq-scale__inner {
    position: sticky;
    top: 128px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 16px 0;
  }
}

.page-faq .faq-scale__cap {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-faq .faq-scale__svg {
  width: 76px;
  height: auto;
  max-width: 100%;
}

.page-faq .faq-scale__svg .sc-rail {
  stroke: var(--line-strong);
  stroke-width: 1;
}

.page-faq .faq-scale__svg .sc-ticks line {
  stroke: var(--mist);
  stroke-width: 1;
}

.page-faq .faq-scale__svg .sc-labels text {
  fill: var(--mist);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
}

.page-faq .faq-scale__svg .sc-dot {
  fill: var(--amber-500);
}

.page-faq .faq-scale__foot {
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.7;
  letter-spacing: .06em;
  text-align: center;
  color: var(--mist);
  opacity: .75;
}

/* ── 窄屏收尾 ───────────────────────────── */

@media (max-width: 560px) {
  .page-faq .faq-hero__main .display-1 {
    max-width: none;
  }

  .page-faq .faq-stats .stat {
    padding: 14px 12px;
  }

  .page-faq .qa__q {
    grid-template-columns: auto minmax(0, 1fr) 12px;
    gap: 10px;
    padding-inline: 14px 12px;
    margin-inline: -12px;
  }

  .page-faq .qa__a {
    padding-right: 8px;
  }

  .page-faq .faq-glossary th,
  .page-faq .faq-glossary td {
    padding: 13px 10px;
  }

  .page-faq .faq-glossary tbody th {
    width: 42%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__q::before,
  .page-faq .faq-tab,
  .page-faq .faq-tab::after,
  .page-faq .faq-path__body a {
    transition: none;
  }
}