.page-faq {
  --faq-line: rgba(110, 122, 118, .34);
  --faq-line-soft: rgba(110, 122, 118, .18);
  --faq-hover: rgba(255, 138, 61, .09);
  background: var(--c-night);
  color: var(--text-hi);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.page-faq .zone--paper,
.page-faq .zone--paper {
  --text-hi: var(--c-ink);
  --text-mid: #46564F;
  --text-low: var(--c-stone);
}

.page-faq [id^="q-"] {
  scroll-margin-top: 110px;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  color: var(--text-low);
  margin: 0 0 28px;
}

.page-faq .crumbs a {
  color: var(--text-mid);
  text-decoration: none;
  transition: color 180ms var(--ease);
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--c-orange);
}

.page-faq .crumbs__sep {
  color: var(--text-low);
  opacity: .7;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: 40px 0 26px;
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: clamp(24px, 4.6vw, 56px);
  background:
    radial-gradient(115% 88% at 90% -14%, rgba(255, 138, 61, .15), transparent 62%),
    linear-gradient(178deg, rgba(14, 42, 36, .92), rgba(7, 23, 20, .97));
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 34px;
  height: 34px;
  border: 1px solid var(--c-orange);
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--radius);
}

.page-faq .faq-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
  border-bottom-right-radius: var(--radius);
}

.page-faq .faq-hero__cols {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.4vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -.022em;
  margin: 14px 0 0;
  max-width: 19ch;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(.9375rem, 2.2vw, 1.0625rem);
  line-height: 1.8;
  color: var(--text-mid);
}

.page-faq .faq-hero__aside .v-note {
  font-family: var(--font-num);
  font-size: .6875rem;
  letter-spacing: .2em;
  color: var(--text-low);
  margin: 0;
}

/* ---------- 跳转条 ---------- */
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 8px;
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-jump__label {
  font-family: var(--font-num);
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--text-low);
  margin-right: 6px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  color: var(--text-mid);
  font-size: .8125rem;
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--c-orange);
  border-color: var(--c-orange);
  background: var(--faq-hover);
}

.page-faq .faq-jump__idx {
  font-family: var(--font-num);
  font-size: .625rem;
  color: var(--c-orange);
  opacity: .85;
}

/* ---------- 刻度分隔 ---------- */
.page-faq .faq-seam {
  height: 18px;
  background-image: repeating-linear-gradient(90deg, currentColor 0 1px, transparent 1px 16px);
  opacity: .2;
  pointer-events: none;
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-block {
  padding: 62px 0;
}

.page-faq .faq-block__head {
  max-width: 44rem;
  margin-bottom: 34px;
}

.page-faq .section__title.faq-block__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.6vw, 2.125rem);
  line-height: 1.22;
  letter-spacing: -.018em;
  margin: 10px 0 0;
}

.page-faq .section__lead.faq-block__lead {
  margin: 14px 0 0;
  max-width: 35em;
  line-height: 1.78;
  color: var(--text-mid);
  font-size: .9688rem;
}

.page-faq .faq-block__foot {
  margin: 30px 0 0;
  font-size: .9063rem;
  color: var(--text-mid);
}

.page-faq .faq-block__foot .link-more {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, .45);
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-block__foot .link-more:hover {
  border-bottom-color: var(--c-orange);
}

/* ---------- 快速上手 ---------- */
.page-faq .faq-start__grid {
  display: grid;
  gap: 38px;
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step-list__item {
  position: relative;
  padding-left: 52px;
  padding-bottom: 28px;
}

.page-faq .step-list__item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 34px;
  bottom: 4px;
  width: 1px;
  background: var(--faq-line);
}

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

.page-faq .step-list__item:last-child::before {
  display: none;
}

.page-faq .step-list__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-orange);
  border-radius: 50%;
  background: var(--c-night);
  color: var(--c-orange);
  font-family: var(--font-num);
  font-size: .6875rem;
  letter-spacing: .04em;
}

.page-faq .zone--paper .step-list__num {
  background: var(--c-paper);
}

.page-faq .step-list__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  line-height: 1.45;
  letter-spacing: -.01em;
  margin: 0 0 8px;
  color: var(--text-hi);
}

.page-faq .step-list__text {
  margin: 0;
  max-width: 34em;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-faq .step-list__text .link-more {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, .45);
}

.page-faq .step-list__text .link-more:hover {
  border-bottom-color: var(--c-orange);
}

.page-faq .faq-start__figure {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-ink);
  margin: 0;
}

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

.page-faq .media-frame__caption {
  padding: 12px 16px;
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--text-low);
  border-top: 1px solid var(--faq-line-soft);
}

/* ---------- 账号与反馈的双栏 ---------- */
.page-faq .faq-account__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-account__figure {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-ink);
  margin: 0;
}

/* ---------- 可展开问答 ---------- */
.page-faq .expand {
  border-top: 1px solid var(--faq-line);
}

.page-faq .expand__item {
  border-bottom: 1px solid var(--faq-line);
  transition: background-color 180ms var(--ease);
}

.page-faq .expand__item:hover {
  background: var(--faq-hover);
}

.page-faq .expand__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 19px 6px;
  margin: 0;
  background: none;
  border: 0;
  color: inherit;
  font-family: var(--font-body);
  font-size: clamp(.9375rem, 2.2vw, 1.0625rem);
  font-weight: 700;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color 180ms var(--ease);
}

.page-faq .expand__trigger:hover {
  color: var(--c-orange);
}

.page-faq .expand__trigger:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
  border-radius: 4px;
}

.page-faq .expand__num {
  flex: 0 0 auto;
  padding-top: .32em;
  font-family: var(--font-num);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--c-orange);
  opacity: .85;
}

.page-faq .expand__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .expand__sign {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: .36em;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  color: var(--text-mid);
  transition: border-color 180ms var(--ease), color 180ms var(--ease), transform 220ms var(--ease);
}

.page-faq .expand__sign::before,
.page-faq .expand__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: opacity 180ms var(--ease);
}

.page-faq .expand__sign::before {
  width: 8px;
  height: 1px;
}

.page-faq .expand__sign::after {
  width: 1px;
  height: 8px;
}

.page-faq .expand__item.is-open .expand__sign {
  border-color: var(--c-orange);
  color: var(--c-orange);
  transform: rotate(90deg);
}

.page-faq .expand__item.is-open .expand__sign::after {
  opacity: 0;
}

.page-faq .expand__panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding: 0 6px 0 40px;
  transition: max-height 260ms var(--ease), opacity 200ms var(--ease), padding 260ms var(--ease);
}

.page-faq .expand__item.is-open .expand__panel {
  max-height: 30rem;
  opacity: 1;
  padding-bottom: 22px;
}

.page-faq .expand__panel p {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text-mid);
}

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

.page-faq .expand__panel .link-more {
  color: var(--c-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 61, .45);
}

.page-faq .expand__panel .link-more:hover {
  border-bottom-color: var(--c-orange);
}

/* ---------- 术语小词典 ---------- */
.page-faq .glossary {
  margin: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .glossary__row {
  display: grid;
  gap: 6px;
  padding: 17px 6px;
  border-bottom: 1px solid var(--faq-line);
  transition: background-color 180ms var(--ease), padding-left 200ms var(--ease);
}

.page-faq .glossary__row:hover,
.page-faq .glossary__row:focus-within {
  background: var(--faq-hover);
  padding-left: 16px;
}

.page-faq .glossary dt {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.008em;
  color: var(--text-hi);
}

.page-faq .glossary dd {
  margin: 0;
  max-width: 42em;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-mid);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .glossary__row {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }

  .page-faq .step-list__item {
    padding-left: 58px;
  }

  .page-faq .expand__panel {
    padding-left: 52px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 940px) {
  .page-faq .faq-hero {
    padding: 56px 0 30px;
  }

  .page-faq .faq-hero__cols {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-start__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-account__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-block {
    padding: 82px 0;
  }

  .page-faq .faq-block__head {
    margin-bottom: 42px;
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1180px) {
  .page-faq .faq-account__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .expand__panel,
  .page-faq .expand__sign,
  .page-faq .expand__item,
  .page-faq .glossary__row,
  .page-faq .faq-jump__link {
    transition-duration: 1ms;
  }
}