.page-faq {
  --faq-rail-w: 212px;
  --faq-radius: var(--r-md);
}

/* ---------- 开篇 ---------- */
.page-faq .faq-head {
  padding-top: clamp(1.75rem, 4.5vw, 3rem);
  padding-bottom: clamp(1.75rem, 4.5vw, 3rem);
}

.page-faq .faq-head .breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-head .eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding-bottom: .35rem;
  border-bottom: 2px solid var(--amber);
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--amber-deep);
}

.page-faq .faq-head .page-title {
  margin: 0 0 1.125rem;
  max-width: 16ch;
  font-size: clamp(2.125rem, 5.6vw, 3.75rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-head .page-lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-index__body .section-title {
  margin: 0 0 .5rem;
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-index__body .section-lede {
  margin: 0 0 1.5rem;
  max-width: 46ch;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-index__item {
  background: var(--silver);
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: .75rem;
  padding: .9375rem 1.125rem;
  border-left: 3px solid transparent;
  text-decoration: none;
  color: var(--ink);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--amber);
  background: #ffffff;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  line-height: 1.75;
  letter-spacing: .02em;
  color: var(--amber-deep);
}

.page-faq .faq-index__text {
  display: block;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-index__text strong {
  display: block;
  margin-bottom: .125rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .faq-index__figure {
  margin: 0;
}

.page-faq .faq-index__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 11 / 7;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--silver);
}

@media (min-width: 900px) {
  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左窄目录 + 右宽问答 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-rail {
  padding-top: .875rem;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-rail__title {
  margin: 0 0 .75rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .125rem;
}

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: .375rem;
  align-items: baseline;
  padding: .5rem .5rem .5rem .25rem;
  border-radius: var(--r-sm);
  font-size: .875rem;
  line-height: 1.55;
  text-decoration: none;
  color: var(--ink);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--glass);
  color: var(--amber-deep);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  color: var(--muted);
}

@media (max-width: 999px) {
  .page-faq .faq-rail__list {
    display: flex;
    gap: .5rem;
    overflow-x: auto;
    padding-bottom: .5rem;
    scrollbar-width: none;
  }
  .page-faq .faq-rail__list::-webkit-scrollbar {
    display: none;
  }
  .page-faq .faq-rail__list li {
    flex: 0 0 auto;
  }
  .page-faq .faq-rail__link {
    grid-template-columns: auto minmax(0, 1fr);
    white-space: nowrap;
    padding: .4375rem .875rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--silver);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

/* ---------- 筛选 ---------- */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .filter-btn {
  padding: .5rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--silver);
  font: inherit;
  font-size: .875rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .filter-btn:hover {
  border-color: var(--amber);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--deep);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 1rem;
  align-items: baseline;
  margin-bottom: 1.5rem;
  padding-bottom: .875rem;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber-deep);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.375rem, 2.8vw, 1.875rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-group__lede {
  grid-column: 2 / -1;
  margin: .625rem 0 0;
  max-width: 56ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-group__figure {
  margin: 1.5rem 0 0;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 25 / 16;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--silver);
}

/* ---------- 折叠问答 ---------- */
.page-faq .accordion {
  display: grid;
  gap: .75rem;
}

.page-faq .accordion-item {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--silver);
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

@media (hover: hover) {
  .page-faq .accordion-item:hover {
    border-color: rgba(232, 128, 31, .55);
  }
}

.page-faq .accordion-item[data-open] {
  border-color: var(--amber);
  background: #ffffff;
}

.page-faq .accordion-item__h {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion-item__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: .875rem;
  width: 100%;
  padding: 1rem 1.125rem;
  border: 0;
  border-radius: var(--faq-radius);
  background: none;
  font: inherit;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
}

.page-faq .accordion-item__trigger:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .accordion-item__no {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--amber-deep);
}

.page-faq .accordion-item__q {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.55;
}

.page-faq .accordion-item__sign {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-faq .accordion-item__sign::before,
.page-faq .accordion-item__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--muted);
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .accordion-item__sign::after {
  transform: rotate(90deg);
}

.page-faq .accordion-item[data-open] .accordion-item__sign::before {
  background: var(--amber);
}

.page-faq .accordion-item[data-open] .accordion-item__sign::after {
  transform: rotate(0deg);
  background: var(--amber);
}

.page-faq .accordion-item__panel {
  display: none;
  position: relative;
  padding: 0 1.125rem 1.25rem 3rem;
}

.page-faq .accordion-item[data-open] .accordion-item__panel {
  display: block;
}

.page-faq .accordion-item__panel::before {
  content: "";
  position: absolute;
  left: 1.4rem;
  top: .125rem;
  bottom: 1.5rem;
  width: 2px;
  border-radius: 2px;
  background: var(--amber);
}

/* ---------- 步骤与列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .625rem;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  column-gap: .75rem;
  align-items: start;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-steps__no {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: .3rem;
  border-radius: 50%;
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  line-height: 1;
  color: var(--mist);
}

.page-faq .faq-bullets {
  list-style: none;
  margin: 0 0 .875rem;
  padding: 0;
  display: grid;
  gap: .4375rem;
}

.page-faq .faq-bullets li {
  position: relative;
  padding-left: 1.125rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8125rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

.page-faq .faq-note {
  margin: .875rem 0 0;
  padding: .75rem .875rem;
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(232, 128, 31, .07);
  font-size: .875rem;
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 三要素说明表 ---------- */
.page-faq .faq-defs {
  margin: 0;
  display: grid;
  gap: .625rem;
}

.page-faq .faq-defs__row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: .875rem;
  padding: .625rem 0;
  border-bottom: 1px dashed var(--line);
}

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

.page-faq .faq-defs__key {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  line-height: 1.8;
  color: var(--amber-deep);
}

.page-faq .faq-defs__val {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--ink);
}

@media (max-width: 520px) {
  .page-faq .faq-defs__row {
    grid-template-columns: minmax(0, 1fr);
    gap: .125rem;
  }
}

/* ---------- 反馈区块 ---------- */
.page-faq .faq-feedback {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-feedback__label {
  margin: 0 0 .875rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--amber-deep);
}

.page-faq .faq-contact {
  display: grid;
  gap: 1.125rem;
  padding: clamp(1.25rem, 3vw, 1.875rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .625rem .875rem;
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: .9375rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
}

@media (min-width: 720px) {
  .page-faq .faq-feedback {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    column-gap: 2.5rem;
  }
  .page-faq .faq-feedback .faq-contact {
    grid-column: 1 / -1;
  }
}

/* ---------- 目录说明 ---------- */
.page-faq .faq-toc {
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-toc__head {
  max-width: 56ch;
  margin-bottom: 1.5rem;
}

.page-faq .faq-toc__head .section-title {
  margin: 0 0 .5rem;
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-toc__lede {
  margin: 0;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-toc__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: .625rem;
}

.page-faq .faq-toc__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .625rem;
  align-items: baseline;
  padding: .75rem .875rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--silver);
  font-size: .875rem;
  line-height: 1.6;
  color: var(--ink);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-toc__item--flag {
  border-color: var(--amber);
  background: linear-gradient(160deg, rgba(232, 128, 31, .14), rgba(232, 128, 31, .02));
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  color: var(--muted);
}

.page-faq .faq-toc__item--flag .faq-toc__num {
  color: var(--amber-deep);
}

.page-faq .faq-toc__flag {
  display: inline-block;
  margin-left: .375rem;
  padding: 0 .3rem;
  border-radius: 3px;
  background: var(--amber);
  font-size: .625rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--deep);
  vertical-align: .1em;
}

.page-faq .faq-toc__foot {
  margin: 1.5rem 0 0;
  max-width: 68ch;
  font-size: .875rem;
  line-height: 1.85;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-rail__link,
  .page-faq .filter-btn,
  .page-faq .accordion-item,
  .page-faq .accordion-item__sign::before,
  .page-faq .accordion-item__sign::after,
  .page-faq .faq-toc__item {
    transition-duration: .01ms;
  }
}
<<<END>>>