.page-faq {
  --faq-step-rail: 56px;
  --faq-rule: rgba(42, 37, 32, 0.14);
  display: block;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-crumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(18px, 3vw, 30px) clamp(20px, 4vw, 40px);
}

.page-faq .faq-hero__frame {
  padding: clamp(20px, 4vw, 42px);
  background:
    linear-gradient(160deg, var(--paper) 0%, var(--paper-deep) 62%, var(--sand-soft) 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: var(--fs-hero);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 900;
  max-width: 16em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-facts {
  margin: 0;
  padding: 16px 18px;
  background: rgba(246, 241, 231, 0.72);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
}

.page-faq .faq-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--faq-rule);
}

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

.page-faq .faq-facts__row:first-child {
  padding-top: 0;
}

.page-faq .faq-facts dt {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  flex: none;
}

.page-faq .faq-facts dd {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
  text-align: right;
}

.page-faq .faq-hero__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 两栏主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  padding-block: clamp(10px, 2vw, 20px) clamp(40px, 7vw, 76px);
}

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

.page-faq .faq-toc-col {
  order: -1;
}

.page-faq .faq-toc {
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
  padding-block: 12px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  padding-left: 2px;
}

.page-faq .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .toc__link {
  display: block;
  white-space: nowrap;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--cyan-soft);
  color: var(--cyan-deep);
  font-size: 13px;
  line-height: 1.6;
  text-decoration: none;
  transition: background-color .18s ease, color .18s ease;
}

.page-faq .toc__link:hover,
.page-faq .toc__link:focus-visible {
  background: var(--sand);
  color: var(--ink);
}

.page-faq .toc__link[data-active="true"] {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  padding-block: clamp(26px, 4vw, 46px);
}

.page-faq .faq-section + .faq-section {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-section__title {
  margin: 0;
  font-size: var(--fs-h2);
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-faq .faq-section__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 准备事项 ---------- */
.page-faq .faq-prep {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-prep__item {
  padding: 16px 18px;
  background: var(--cyan-soft);
  border-radius: var(--radius);
  border-left: 3px solid var(--cyan-deep);
}

.page-faq .faq-prep__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-prep__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-figure .media {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--cyan-soft);
}

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

/* ---------- 五步阶梯 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-step-rail) minmax(0, 1fr);
  gap: 14px;
  padding: 16px 16px 16px 10px;
  border-radius: var(--radius);
  box-shadow: inset 0 -1px 0 var(--faq-rule);
  transition: background-color .25s ease, box-shadow .25s ease;
}

.page-faq .step:has(.step__input:checked) {
  background: var(--cyan-soft);
  box-shadow: inset 0 -1px 0 rgba(74, 112, 118, 0.22);
}

.page-faq .step__marker {
  position: relative;
  display: grid;
  place-items: center;
  align-self: start;
  width: var(--faq-step-rail);
  height: var(--faq-step-rail);
  border-radius: 50%;
  background: var(--sand-soft);
  cursor: pointer;
  transition: background-color .22s ease;
}

.page-faq .step:hover .step__marker {
  background: var(--sand);
}

.page-faq .step__marker:focus-within {
  outline: 2px solid var(--cyan-deep);
  outline-offset: 2px;
}

.page-faq .step__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  border-radius: 50%;
}

.page-faq .step__num {
  grid-area: 1 / 1;
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--cyan-deep);
  transition: opacity .18s ease;
}

.page-faq .step__tick {
  grid-area: 1 / 1;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
  opacity: 0;
  transform: scale(.6);
  transition: opacity .18s ease, transform .18s ease;
}

.page-faq .step__input:checked ~ .step__num {
  opacity: 0;
}

.page-faq .step__input:checked ~ .step__tick {
  opacity: 1;
  transform: scale(1);
}

.page-faq .step__body {
  min-width: 0;
  padding-top: 4px;
}

.page-faq .step__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .step__hint {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .step__more {
  margin-top: 10px;
  border-left: 2px solid var(--cyan);
  padding-left: 12px;
}

.page-faq .step__more > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 2px 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan-deep);
  cursor: pointer;
  list-style: none;
}

.page-faq .step__more > summary::-webkit-details-marker {
  display: none;
}

.page-faq .step__more > summary::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform .24s ease;
}

.page-faq .step__more[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .step__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 辨认要点 ---------- */
.page-faq .faq-checks {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-checks li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-checks li strong {
  color: var(--ink);
  font-weight: 700;
}

.page-faq .faq-checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 13px;
  height: 7px;
  border-left: 2px solid var(--cyan-deep);
  border-bottom: 2px solid var(--cyan-deep);
  transform: rotate(-45deg);
}

.page-faq .faq-hint {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hint p:last-child {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 替代路径 ---------- */
.page-faq .faq-fallbacks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-fallback {
  padding: 16px 18px;
  background: var(--sand-soft);
  border-radius: var(--radius);
  border-top: 2px solid var(--sand);
}

.page-faq .faq-fallback__case {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .faq-fallback__do {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-fallback__do a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-fallback__do a:hover {
  color: var(--flame);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 2px;
}

.page-faq .faq-item {
  padding: 0 14px;
  border-bottom: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  transition: background-color .24s ease;
}

.page-faq .faq-item[open] {
  background: var(--sand-soft);
  border-bottom-color: transparent;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.65;
  cursor: pointer;
  list-style: none;
  transition: color .18s ease;
}

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

.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  margin-top: 7px;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--cyan-deep);
  border-bottom: 1.5px solid var(--cyan-deep);
  transform: rotate(45deg);
  transition: transform .24s ease, border-color .18s ease;
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--cyan-deep);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item__a {
  padding: 0 0 16px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-item__a a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--flame);
}

/* ---------- 收束段 ---------- */
.page-faq .faq-outro {
  background: var(--cyan-soft);
  border-top: 1px solid rgba(74, 112, 118, 0.24);
}

.page-faq .faq-outro__inner {
  padding-block: clamp(32px, 5vw, 58px);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-size: var(--fs-h3);
  line-height: 1.35;
  letter-spacing: -0.01em;
  font-weight: 900;
  max-width: 22em;
}

.page-faq .faq-outro__text {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-outro__text a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-outro__text a:hover {
  color: var(--flame);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-outro__save {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-section__head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(18px, 3vw, 34px);
    align-items: end;
  }

  .page-faq .faq-prep {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-prep__item:first-child {
    grid-column: 1 / -1;
  }

  .page-faq .faq-fallbacks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-fallback:last-child {
    grid-column: 1 / -1;
  }

  .page-faq .step {
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 20px;
    padding: 20px 20px 20px 12px;
  }

  .page-faq .step__marker {
    width: 62px;
    height: 62px;
  }

  .page-faq .step__num {
    font-size: 30px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(26px, 3.6vw, 46px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 206px;
    align-items: start;
  }

  .page-faq .faq-toc-col {
    order: 0;
    position: sticky;
    top: 28px;
    align-self: start;
  }

  .page-faq .faq-toc {
    border-top: 0;
    border-bottom: 0;
    border-left: 2px solid var(--cyan-soft);
    padding-block: 0;
    padding-left: 14px;
  }

  .page-faq .faq-toc__title {
    margin-bottom: 12px;
    padding-left: 10px;
  }

  .page-faq .toc__list {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .toc__link {
    border-radius: var(--radius);
    background: transparent;
    border-left: 2px solid transparent;
    margin-left: -16px;
    padding: 7px 10px 7px 14px;
    white-space: normal;
    color: var(--muted);
    font-size: 14px;
  }

  .page-faq .toc__link:hover,
  .page-faq .toc__link:focus-visible {
    background: var(--sand-soft);
    color: var(--ink);
  }

  .page-faq .toc__link[data-active="true"] {
    background: var(--sand-soft);
    color: var(--ink);
    font-weight: 700;
    border-left-color: var(--flame);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .step__marker,
  .page-faq .step__num,
  .page-faq .step__tick,
  .page-faq .step__more > summary::after,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .toc__link {
    transition: none;
  }
}
<<<END>>>