.page-faq {
  --faq-sec-pad: clamp(1.9rem, 4.4vw, 2.9rem);
  --faq-radius: 12px;
  position: relative;
  isolation: isolate;
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(780px, 92vh);
  background:
    radial-gradient(110% 62% at 6% 0%, rgba(47, 227, 208, .11), transparent 62%),
    radial-gradient(78% 54% at 94% 4%, rgba(122, 107, 255, .11), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: clamp(1.1rem, 3vw, 1.7rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.6rem, 4.4vw, 2.8rem) 0 clamp(1.6rem, 3.6vw, 2.6rem);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.5rem);
  max-width: 40rem;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.6vw, 3.7rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--warm);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 0;
  color: var(--mist);
  font-size: clamp(0.98rem, 2.3vw, 1.1rem);
  line-height: 1.78;
  max-width: 36rem;
}

.page-faq .faq-hero__beat {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0;
  font-family: var(--mono);
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--score);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: .2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__chip {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--mist);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .28rem .68rem;
  background: rgba(16, 31, 56, .55);
}

/* ---------- 主体网格 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.8rem, 4vw, 2.6rem);
  padding-bottom: clamp(3.4rem, 8vw, 6rem);
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 196px minmax(0, 1fr);
    column-gap: clamp(2.2rem, 4.6vw, 4.4rem);
    align-items: start;
  }
}

/* ---------- 锚点目录 ---------- */
.page-faq .faq-rail {
  position: relative;
  min-width: 0;
}

@media (min-width: 1024px) {
  .page-faq .faq-rail__sticky {
    position: sticky;
    top: 1.8rem;
  }
}

.page-faq .faq-rail__label {
  margin: 0 0 .6rem;
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

@media (max-width: 1023px) {
  .page-faq .faq-rail__label {
    display: none;
  }
}

.page-faq .faq-toc-wrap {
  min-width: 0;
}

.page-faq .faq-toc {
  display: flex;
  gap: .35rem;
  margin: 0;
  padding: 0 0 .4rem;
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.page-faq .faq-toc::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc__item {
  flex: 0 0 auto;
}

@media (min-width: 1024px) {
  .page-faq .faq-toc {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-toc__item {
    flex: 0 0 auto;
  }
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: center;
  gap: .5rem;
  white-space: nowrap;
  font-size: .86rem;
  line-height: 1.5;
  padding: .62rem .9rem;
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  border-radius: 999px;
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

@media (min-width: 1024px) {
  .page-faq .faq-toc__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: .5rem .7rem .5rem .85rem;
    margin-left: -1px;
  }
}

.page-faq .faq-toc__link:hover {
  color: var(--warm);
}

.page-faq .faq-toc__link[aria-current] {
  color: var(--warm);
  border-left-color: var(--orange);
  background: rgba(255, 106, 43, .08);
}

.page-faq .faq-toc__num {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .06em;
}

/* ---------- 章节 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-sec {
  position: relative;
  padding: var(--faq-sec-pad) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar-h) + 1.4rem);
}

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

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  margin-bottom: .9rem;
}

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
  line-height: 1.28;
  letter-spacing: -0.012em;
  color: var(--warm);
  text-wrap: balance;
}

.page-faq .faq-sec p {
  margin: 0 0 .9rem;
  color: var(--mist);
  font-size: clamp(0.94rem, 2.2vw, 1rem);
  line-height: 1.82;
}

.page-faq .faq-sec strong {
  color: var(--warm);
  font-weight: 600;
}

.page-faq .faq-note {
  margin-top: 1.1rem !important;
  padding: .85rem 1rem;
  border-left: 2px solid var(--line);
  background: linear-gradient(90deg, rgba(16, 31, 56, .8), rgba(10, 20, 38, 0));
  border-radius: 0 var(--faq-radius) var(--faq-radius) 0;
  font-size: .9rem !important;
}

.page-faq .faq-sec__path {
  display: inline-block;
  margin-top: .35rem;
  font-size: .88rem;
}

/* ---------- 同步清单 ---------- */
.page-faq .sync-list {
  list-style: none;
  margin: 1.2rem 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .sync-list__item {
  display: grid;
  gap: .2rem;
  padding: .8rem .95rem;
  background: var(--panel);
}

@media (min-width: 640px) {
  .page-faq .sync-list__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }
}

.page-faq .sync-list__key {
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--cyan);
}

.page-faq .sync-list__val {
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.68;
}

/* ---------- 图片 ---------- */
.page-faq .faq-fig {
  margin: 1.4rem 0;
}

.page-faq .faq-fig .media {
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

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

.page-faq .faq-fig__cap {
  margin-top: .6rem;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--mist);
  opacity: .85;
}

/* ---------- 路径图 ---------- */
.page-faq .pathmap {
  list-style: none;
  margin: 1.25rem 0 1.2rem;
  padding: 0;
  display: grid;
  gap: .8rem;
}

@media (min-width: 880px) {
  .page-faq .pathmap {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.35rem;
  }
}

.page-faq .pathmap__item {
  position: relative;
  padding: 1rem .95rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(16, 31, 56, .95), rgba(10, 20, 38, .85));
}

@media (min-width: 880px) {
  .page-faq .pathmap__item::after {
    content: "";
    position: absolute;
    top: 50%;
    right: -1.35rem;
    width: 1.35rem;
    height: 1px;
    background: var(--cyan);
    opacity: .55;
  }

  .page-faq .pathmap__item:last-child::after {
    display: none;
  }
}

.page-faq .pathmap__num {
  display: inline-block;
  margin-bottom: .5rem;
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .pathmap__title {
  margin: 0 0 .45rem;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.45;
  color: var(--warm);
}

.page-faq .pathmap__body {
  margin: 0 !important;
  font-size: .88rem !important;
  line-height: 1.7 !important;
}

/* ---------- 两步费用 ---------- */
.page-faq .two-step {
  display: grid;
  gap: .7rem;
  margin: 1.25rem 0 0;
}

.page-faq .two-step__arrow {
  justify-self: center;
  align-self: center;
  font-family: var(--mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--cyan);
  transform: rotate(90deg);
}

@media (min-width: 780px) {
  .page-faq .two-step {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: stretch;
    gap: 1rem;
  }

  .page-faq .two-step__arrow {
    transform: none;
  }
}

.page-faq .two-step__card {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding: 1.05rem 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--panel);
}

.page-faq .two-step__card p {
  margin: 0 !important;
  font-size: .88rem !important;
  line-height: 1.72 !important;
}

.page-faq .two-step__card--accent {
  border-color: rgba(255, 106, 43, .42);
  background: linear-gradient(180deg, rgba(255, 106, 43, .1), rgba(16, 31, 56, .92));
}

.page-faq .two-step__badge {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--score);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .18rem .6rem;
}

.page-faq .two-step__title {
  margin: 0;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.005em;
  color: var(--warm);
}

/* ---------- 双栏对照 ---------- */
.page-faq .dual {
  display: grid;
  gap: .8rem;
  margin: 1.2rem 0 1.1rem;
}

@media (min-width: 760px) {
  .page-faq .dual {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

.page-faq .dual__col {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.05rem 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(16, 31, 56, .72);
}

.page-faq .dual__col--warm {
  border-left: 2px solid var(--orange);
}

.page-faq .dual__col .tag {
  align-self: flex-start;
}

.page-faq .dual__title {
  margin: 0;
  font-family: var(--sans);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--warm);
}

.page-faq .dual__col p {
  margin: 0 !important;
  font-size: .88rem !important;
  line-height: 1.72 !important;
}

/* ---------- 侧轨示意 ---------- */
.page-faq .railmap {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .28rem;
  margin: 1.2rem 0;
  padding: .9rem 1rem .9rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(6, 14, 28, .9), rgba(16, 31, 56, .6));
  max-width: 22rem;
}

.page-faq .railmap__bar {
  position: absolute;
  top: .9rem;
  bottom: .9rem;
  left: .72rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
  opacity: .55;
}

.page-faq .railmap__item {
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .03em;
  color: var(--mist);
  padding: .3rem .55rem;
  border-radius: 6px;
}

.page-faq .railmap__item--active {
  color: var(--ink-900);
  background: var(--orange);
  font-weight: 700;
}

/* ---------- 手风琴问答 ---------- */
.page-faq .qa {
  margin-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.page-faq .qa__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem .15rem;
  font-family: var(--sans);
  font-size: clamp(0.95rem, 2.2vw, 1.02rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--warm);
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q:hover {
  color: var(--cyan);
}

.page-faq .qa__q::after {
  content: "";
  flex: 0 0 auto;
  width: .56rem;
  height: .56rem;
  margin-top: .48rem;
  margin-left: auto;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .22s var(--ease);
}

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

.page-faq .qa__a {
  padding: 0 .15rem 1.15rem;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.8;
}

.page-faq .qa__a p {
  margin: 0 0 .55rem;
  font-size: .92rem;
  line-height: 1.8;
}

.page-faq .qa__a .link-arrow {
  font-size: .85rem;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding: clamp(1.4rem, 3.6vw, 2.1rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(255, 106, 43, .12), transparent 58%),
    linear-gradient(180deg, rgba(16, 31, 56, .95), rgba(6, 14, 28, .95));
  box-shadow: var(--shadow-cell);
}

.page-faq .faq-help__title {
  margin: 0 0 .6rem;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  letter-spacing: -0.01em;
  color: var(--warm);
}

.page-faq .faq-help__body {
  margin: 0 0 1.2rem;
  max-width: 34rem;
  color: var(--mist);
  font-size: .94rem;
  line-height: 1.8;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

@media (max-width: 479px) {
  .page-faq .faq-help__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

/* ---------- 降级与动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q::after,
  .page-faq .faq-toc__link {
    transition: none;
  }
}
<<<END>>>