.page-faq {
  --faq-rail-w: 236px;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 18px 0 0;
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--blue);
}

.page-faq .crumbs a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .crumbs a:hover {
  border-bottom-color: var(--blue);
}

.page-faq .crumbs > span:last-child {
  color: var(--ink);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 40px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 45% 0;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px);
  background-size: 100% 32px;
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -58%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(58, 107, 135, 0.22), rgba(58, 107, 135, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--orange-deep);
}

.page-faq h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--blue-deep);
  max-width: 15em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.85;
}

.page-faq .faq-hero__note {
  position: relative;
  top: 4px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--stone);
  box-shadow: 5px 5px 0 var(--blue-light);
}

.page-faq .faq-hero__note-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.page-faq .faq-hero__note p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

/* 左窄右宽 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 30px 0 56px;
}

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

.page-faq .rail__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--blue);
}

.page-faq .faq-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-faq .faq-toc__item {
  position: relative;
  flex: 0 0 auto;
  min-width: 168px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-toc__item.is-active {
  background: var(--blue-light);
  border-left-color: var(--orange);
}

.page-faq .faq-toc__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange-deep);
}

.page-faq .faq-toc__label {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
}

.page-faq .faq-toc__hint {
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.55;
  color: var(--blue);
}

/* 分区 */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-sec {
  padding-bottom: 44px;
}

.page-faq .faq-sec + .faq-sec {
  border-top: 1px solid var(--line-soft);
  padding-top: 36px;
}

.page-faq .faq-sec__no {
  margin: 0;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange-deep);
}

.page-faq h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 33px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--blue-deep);
}

.page-faq .faq-sec > p {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-sec > p a,
.page-faq .faq-step__body a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--blue-light);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-sec > p a:hover,
.page-faq .faq-step__body a:hover {
  border-bottom-color: var(--orange);
}

/* 编号步骤 */
.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  bottom: 26px;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 22px;
}

.page-faq .faq-step:last-child {
  padding-bottom: 4px;
}

.page-faq .faq-step__no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--blue-deep);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step__body {
  padding-top: 5px;
}

.page-faq .faq-step__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.8;
}

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

.page-faq .faq-figure .figure__frame {
  border: 1px solid var(--line);
  background: var(--stone);
  overflow: hidden;
}

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

.page-faq .faq-figure .figure__cap {
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  color: var(--blue);
}

/* 三步对照 */
.page-faq .faq-compare {
  margin: 22px 0 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-compare__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-compare__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--orange-deep);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-compare__what {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--blue-deep);
}

.page-faq .faq-compare__do {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--blue-light);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

/* 小屏提示带 */
.page-faq .faq-banner {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-top: 18px;
  padding: 18px;
  background: var(--blue-light);
  border-left: 3px solid var(--blue);
}

.page-faq .faq-banner__icon {
  display: block;
  color: var(--blue-deep);
}

.page-faq .faq-banner h2 {
  margin: 0;
  font-size: clamp(21px, 4vw, 27px);
  color: var(--blue-deep);
}

.page-faq .faq-banner p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.75;
}

/* 短条目列表 */
.page-faq .faq-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-list li {
  position: relative;
  padding: 14px 0 14px 20px;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.75;
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

/* 诊断码横带 */
.page-faq .faq-diag {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 20px;
  padding: 18px;
  background: var(--blue-deep);
  color: var(--paper);
}

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

.page-faq .faq-diag__label {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue-light);
}

.page-faq .faq-diag__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-diag__btn {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  padding: 9px 16px;
  border: 1px solid var(--orange);
  border-radius: 0;
  background: transparent;
  color: var(--paper);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-diag__btn:hover {
  background: var(--orange);
  color: var(--paper);
}

.page-faq .faq-diag__btn[data-copied] {
  background: var(--sage);
  border-color: var(--sage);
  color: var(--paper);
}

/* 末尾跳转 */
.page-faq .faq-sec__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 0;
}

.page-faq .faq-sec__links a {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--orange);
}

.page-faq .faq-sec__links a:hover {
  color: var(--orange-deep);
}

@media (min-width: 760px) {
  .page-faq .faq-compare__head {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 22px;
    padding: 0 0 10px;
    border-bottom: 1px solid var(--line);
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--blue);
  }

  .page-faq .faq-compare__row {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 22px;
    align-items: start;
  }

  .page-faq .faq-compare__do {
    padding-left: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 34px 0 54px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 44px;
  }

  .page-faq .faq-hero__note {
    top: 8px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 48px;
    padding: 40px 0 72px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-faq .faq-toc {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__item {
    min-width: 0;
    padding: 11px 12px 11px 14px;
    border: 0;
    border-left: 2px solid var(--line-soft);
    background: transparent;
  }

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

  .page-faq .faq-toc__item.is-active {
    background: var(--blue-light);
    border-left-color: var(--orange);
  }

  .page-faq .faq-diag {
    padding: 20px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__item,
  .page-faq .faq-diag__btn,
  .page-faq .crumbs a,
  .page-faq .faq-sec > p a,
  .page-faq .faq-step__body a {
    transition: none;
  }
}
<<<END>>>