.page-faq {
  --faq-ink-soft: rgba(14, 21, 18, 0.72);
  --faq-pad: 44px;
  background: var(--mist);
  color: var(--on-light);
  font-family: var(--font-body);
}

.page-faq .container {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.page-faq .faq-band {
  padding-block: var(--faq-pad);
}

.page-faq .faq-band--mist {
  background: var(--mist);
  color: var(--on-light);
}

.page-faq .faq-band--green {
  background: var(--green);
  color: var(--on-dark);
}

.page-faq .faq-band--night {
  background: var(--night);
  color: var(--on-dark);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--faq-ink-soft);
}

.page-faq .breadcrumb__link {
  color: var(--faq-ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}

.page-faq .breadcrumb__link:hover {
  color: var(--zhu);
  border-bottom-color: var(--jin);
}

.page-faq .breadcrumb__sep {
  color: var(--jin);
}

/* 首屏 */
.page-faq .faq-hero {
  margin-top: 22px;
}

.page-faq .kicker {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* 三步路径 */
.page-faq .path-3__heading {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.3;
  margin: 38px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-on-light);
}

.page-faq .path-3 {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .path-3__node {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--green);
  color: var(--on-dark);
  border-top: 3px solid var(--jin);
  transition: background var(--t), border-color var(--t);
}

.page-faq .path-3__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--jin);
}

.page-faq .path-3__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.35;
  color: var(--on-dark);
}

.page-faq .path-3__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted-on-dark);
}

.page-faq .path-3__tip {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-on-dark);
  font-size: 12px;
  line-height: 1.65;
  color: var(--jin-light);
}

.page-faq .path-3__node:hover {
  background: var(--night);
  border-top-color: var(--jin-light);
}

.page-faq .path-3__node:hover::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 10px;
  height: 10px;
  background: var(--jin);
}

/* 图片 */
.page-faq .figure-frame {
  margin: 26px 0 0;
}

.page-faq .figure-frame__media {
  background: var(--night);
  border: 1px solid var(--line-on-light);
  overflow: hidden;
}

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

.page-faq .figure-frame__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

/* 双栏布局 */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

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

.page-faq .index-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .index-rail__link {
  display: block;
  white-space: nowrap;
  padding: 8px 12px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--on-light);
  text-decoration: none;
  border: 1px solid var(--line-on-light);
  scroll-snap-align: start;
  transition: border-color var(--t), color var(--t), background var(--t);
}

.page-faq .index-rail__link:hover {
  border-color: var(--jin);
  color: var(--zhu);
}

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

/* 章节 */
.page-faq .faq-sec {
  margin: 0 0 42px;
  padding-top: 4px;
  scroll-margin-top: 24px;
}

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

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line-on-light);
}

.page-faq .faq-sec__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--zhu);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.32;
  letter-spacing: -0.005em;
}

.page-faq .faq-sec__lead {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* 编号四段 */
.page-faq .code-split {
  display: grid;
  gap: 10px;
  margin: 0 0 22px;
}

.page-faq .code-split__seg {
  padding: 16px;
  background: var(--steel);
  color: var(--on-dark);
  border-top: 3px solid var(--jin);
}

.page-faq .code-split__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--jin-light);
}

.page-faq .code-split__name {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--on-dark);
}

.page-faq .code-split__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(243, 239, 230, 0.72);
}

/* 折叠问答 */
.page-faq .fold {
  border-bottom: 1px solid var(--line-on-light);
  transition: box-shadow var(--t);
}

.page-faq .fold__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.62;
  cursor: pointer;
  list-style: none;
  transition: color var(--t), padding-left var(--t);
}

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

.page-faq .fold__summary:hover {
  color: var(--zhu);
}

.page-faq .fold__icon {
  position: relative;
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border: 1px solid var(--zhu);
}

.page-faq .fold__icon::before,
.page-faq .fold__icon::after {
  content: "";
  position: absolute;
  background: var(--zhu);
}

.page-faq .fold__icon::before {
  left: 50%;
  top: 2px;
  bottom: 2px;
  width: 1px;
  margin-left: -0.5px;
}

.page-faq .fold__icon::after {
  top: 50%;
  left: 2px;
  right: 2px;
  height: 1px;
  margin-top: -0.5px;
}

.page-faq .fold[open] .fold__icon::before {
  display: none;
}

.page-faq .fold[open] {
  box-shadow: inset 3px 0 0 var(--jin);
}

.page-faq .fold[open] > .fold__summary {
  padding-left: 16px;
  color: var(--zhu);
}

.page-faq .fold__body {
  margin: 0;
  padding: 0 0 20px 25px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .fold[open] > .fold__body {
  padding-left: 41px;
}

/* 正文内链 */
.page-faq .link-underline {
  color: var(--zhu);
  text-decoration: none;
  border-bottom: 1px solid var(--paper);
  transition: color var(--t), border-color var(--t);
}

.page-faq .link-underline:hover {
  color: var(--zhu-deep);
  border-bottom-color: var(--jin);
}

/* 术语表 */
.page-faq .faq-terms__heading {
  margin: 10px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.32;
}

.page-faq .faq-terms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line-on-dark);
}

.page-faq .faq-terms__item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line-on-dark);
}

.page-faq .faq-terms__key {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--jin);
}

.page-faq .faq-terms__val {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted-on-dark);
}

/* 疑问与联系 */
.page-faq .faq-help__list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  counter-reset: faq-h;
}

.page-faq .faq-help__item {
  position: relative;
  padding: 11px 0 11px 34px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--faq-ink-soft);
  border-bottom: 1px dashed var(--line-on-light);
}

.page-faq .faq-help__item::before {
  counter-increment: faq-h;
  content: counter(faq-h, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--zhu);
}

.page-faq .faq-contact {
  display: grid;
  gap: 0;
  margin: 0 0 22px;
  border-top: 1px solid var(--line-on-light);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-on-light);
}

.page-faq .faq-contact__key {
  flex: 0 0 auto;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-contact__val {
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .copy-btn {
  padding: 4px 10px;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.6;
  color: var(--zhu);
  background: transparent;
  border: 1px solid var(--line-on-light);
  cursor: pointer;
  transition: color var(--t), border-color var(--t), background var(--t);
}

.page-faq .copy-btn:hover {
  border-color: var(--jin);
  color: var(--zhu-deep);
}

.page-faq .copy-btn.is-copied {
  color: var(--jin);
  border-color: var(--jin);
}

/* 收口 */
.page-faq .faq-cta {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-faq .faq-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.4;
  color: var(--on-dark);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta__actions .btn {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

/* 断点 */
@media (min-width: 700px) {
  .page-faq {
    --faq-pad: 56px;
  }

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

  .page-faq .path-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .page-faq .code-split {
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border: 1px solid var(--line-on-light);
  }

  .page-faq .code-split__seg {
    border-top-width: 3px;
    border-right: 1px solid rgba(243, 239, 230, 0.16);
    border-bottom: 1px solid rgba(243, 239, 230, 0.16);
  }

  .page-faq .code-split__seg:nth-child(2n) {
    border-right: 0;
  }

  .page-faq .code-split__seg:nth-child(n + 3) {
    border-bottom: 0;
  }

  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 44px;
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }

  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-faq .faq-cta__text {
    max-width: 34ch;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero h1 {
    font-size: 46px;
    max-width: 20ch;
  }

  .page-faq .path-3__heading {
    font-size: 24px;
    margin-top: 46px;
  }

  .page-faq .path-3__node {
    padding: 24px 22px 26px;
  }

  .page-faq .faq-sec__title {
    font-size: 27px;
  }

  .page-faq .faq-sec__lead {
    font-size: 15.5px;
  }

  .page-faq .faq-terms__heading {
    font-size: 26px;
  }

  .page-faq .code-split {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .code-split__seg {
    border-right: 1px solid rgba(243, 239, 230, 0.16);
    border-bottom: 0;
  }

  .page-faq .code-split__seg:nth-child(2n) {
    border-right: 1px solid rgba(243, 239, 230, 0.16);
  }

  .page-faq .code-split__seg:last-child {
    border-right: 0;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 218px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

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

  .page-faq .index-rail__link {
    white-space: normal;
    padding: 7px 0 7px 12px;
    font-size: 13px;
    line-height: 1.55;
    border: 0;
    border-left: 3px solid transparent;
  }

  .page-faq .index-rail__link[aria-current="true"] {
    color: var(--zhu);
    font-weight: 700;
    border-left-color: var(--jin);
  }
}
<<<PAGE_CSS_END>>>