.page-faq {
  --faq-line: var(--bw-stone);
  --faq-soft: var(--bw-mist);
  --faq-step-line: rgba(107, 75, 201, 0.25);
  background: var(--bw-paper);
  color: var(--bw-ink);
  font-family: var(--bw-font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq .bw-shell {
  width: 100%;
  max-width: var(--bw-shell);
  margin: 0 auto;
  padding: 0 18px;
  box-sizing: border-box;
}

.page-faq .bw-mono {
  font-family: var(--bw-font-mono);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0 4px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--bw-moss);
}
.page-faq .faq-crumb a {
  color: var(--bw-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-faq .faq-crumb a:hover {
  border-bottom-color: var(--bw-green);
}
.page-faq .faq-crumb__sep {
  color: var(--bw-stone);
}
.page-faq .faq-crumb__now {
  color: var(--bw-moss);
}

/* ---------- 通用小标与标题 ---------- */
.page-faq .faq-kicker {
  margin: 0 0 10px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bw-green);
}
.page-faq .faq-h1 {
  margin: 0 0 14px;
  font-family: var(--bw-font-display);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--bw-ink);
}
.page-faq .faq-h2 {
  margin: 0 0 10px;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--bw-ink);
}
.page-faq .faq-lede {
  margin: 0;
  font-family: var(--bw-font-body);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.85;
  color: var(--bw-ink);
  max-width: 44em;
}
.page-faq .faq-lead-sm {
  margin: 0;
  font-family: var(--bw-font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--bw-moss);
  max-width: 46em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 18px 0 26px;
}
.page-faq .faq-hero__inner {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr);
}
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 13px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--bw-green);
  text-decoration: none;
  background: var(--faq-soft);
  clip-path: var(--bw-cut-xs);
  transition: background 160ms ease, color 160ms ease;
}
.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--bw-green);
  color: var(--bw-paper);
}

.page-faq .faq-hero__card {
  background: var(--bw-sand);
  color: var(--bw-sand-deep);
  padding: 22px 20px 18px;
  clip-path: var(--bw-cut);
}
.page-faq .faq-hero__card-title {
  margin: 0 0 14px;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--bw-sand-deep);
}
.page-faq .faq-quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-quick li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid rgba(138, 95, 22, 0.24);
}
.page-faq .faq-quick li:last-child {
  border-bottom: 0;
}
.page-faq .faq-quick__n {
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-sand-deep);
  flex: none;
}
.page-faq .faq-quick a {
  color: var(--bw-sand-deep);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}
.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-hero__card-foot {
  margin: 16px 0 0;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--bw-sand-deep);
}

/* ---------- 区块外壳 ---------- */
.page-faq .faq-block {
  padding: 34px 0;
  border-top: 1px solid var(--faq-line);
}
.page-faq .faq-head {
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--faq-line);
}

/* ---------- 换机前准备 ---------- */
.page-faq .faq-prep {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}
.page-faq .faq-prep__item {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--bw-paper);
  clip-path: var(--bw-cut-sm);
  box-shadow: inset 0 0 0 1px var(--faq-line);
}
.page-faq .faq-prep__n {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-green);
  margin-bottom: 8px;
}
.page-faq .faq-prep__title {
  margin: 0 0 8px;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  color: var(--bw-ink);
}
.page-faq .faq-prep__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bw-moss);
}
.page-faq .faq-tip {
  margin: 16px 0 0;
  padding: 12px 14px;
  background: var(--faq-soft);
  border-left: 3px solid var(--bw-lift);
  font-size: 14px;
  line-height: 1.75;
  color: var(--bw-ink);
}
.page-faq .faq-tip a {
  color: var(--bw-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 五步流程 ---------- */
.page-faq .faq-block--steps {
  background:
    linear-gradient(180deg, rgba(228, 241, 236, 0.72) 0%, rgba(251, 250, 246, 0) 42%);
}
.page-faq .faq-figure {
  margin: 0 0 22px;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--bw-mist);
  clip-path: var(--bw-cut);
}
.page-faq .faq-figure figcaption,
.page-faq .faq-mobile__fig figcaption {
  margin-top: 8px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--bw-moss);
}

.page-faq .faq-steps {
  display: grid;
  gap: 2px;
}
.page-faq .faq-step {
  position: relative;
  padding-bottom: 12px;
}
.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 40px;
  top: 58px;
  bottom: -2px;
  width: 2px;
  background: var(--faq-step-line);
}
.page-faq .faq-step:last-child::before {
  display: none;
}
.page-faq .faq-step__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.page-faq .faq-step__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 14px 12px 12px;
  background: var(--bw-paper);
  clip-path: var(--bw-cut-sm);
  box-shadow: inset 0 0 0 1px var(--faq-line);
  cursor: pointer;
  transition: background 180ms ease, box-shadow 180ms ease;
}
.page-faq .faq-step__head:hover {
  box-shadow: inset 0 0 0 1px var(--bw-lift);
}
.page-faq .faq-step__num {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-size: 15px;
  font-weight: 700;
  color: var(--bw-paper);
  background: var(--bw-violet);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background 180ms ease;
}
.page-faq .faq-step__main {
  display: block;
  min-width: 0;
}
.page-faq .faq-step__title {
  display: block;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: var(--bw-ink);
}
.page-faq .faq-step__flag {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 9px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--bw-coral);
  border: 1px solid var(--bw-coral);
  border-radius: 999px;
  background: rgba(226, 85, 47, 0.05);
}
.page-faq .faq-step__body {
  display: none;
  margin: 10px 0 0;
  padding: 2px 4px 2px 70px;
}
.page-faq .faq-step__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bw-moss);
}
.page-faq .faq-step__trouble {
  padding: 10px 12px;
  background: var(--faq-soft);
  border-left: 3px solid var(--bw-violet);
  color: var(--bw-ink) !important;
  font-size: 14px !important;
}
.page-faq .faq-step__trouble span {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bw-violet);
  font-weight: 700;
}
.page-faq .faq-step__radio:checked ~ .faq-step__head {
  background: var(--bw-violet);
  box-shadow: inset 0 0 0 1px var(--bw-violet);
}
.page-faq .faq-step__radio:checked ~ .faq-step__head .faq-step__num {
  background: var(--bw-sand);
  color: var(--bw-sand-deep);
}
.page-faq .faq-step__radio:checked ~ .faq-step__head .faq-step__title {
  color: var(--bw-paper);
}
.page-faq .faq-step__radio:checked ~ .faq-step__head .faq-step__flag {
  color: var(--bw-paper);
  border-color: rgba(251, 250, 246, 0.7);
  background: rgba(251, 250, 246, 0.12);
}
.page-faq .faq-step__radio:checked ~ .faq-step__body {
  display: block;
}
.page-faq .faq-step__radio:focus-visible ~ .faq-step__head {
  outline: 2px dashed var(--bw-violet);
  outline-offset: 2px;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
}
.page-faq .faq-q {
  position: relative;
  background: var(--bw-paper);
  clip-path: var(--bw-cut-sm);
  box-shadow: inset 0 0 0 1px var(--faq-line);
  transition: box-shadow 180ms ease;
}
.page-faq .faq-q:hover {
  box-shadow: inset 0 0 0 1px var(--bw-lift);
}
.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--bw-coral);
  transition: width 200ms ease;
  z-index: 1;
}
.page-faq .faq-q[open]::before {
  width: 4px;
}
.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--bw-font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.6;
  color: var(--bw-ink);
}
.page-faq .faq-q > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q > summary:focus-visible {
  outline: 2px dashed var(--bw-coral);
  outline-offset: -4px;
}
.page-faq .faq-q__n {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-green);
  padding-top: 3px;
}
.page-faq .faq-q__t {
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-q__sign {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}
.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background: var(--bw-coral);
  transition: transform 200ms ease, opacity 200ms ease;
}
.page-faq .faq-q__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}
.page-faq .faq-q__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}
.page-faq .faq-q[open] .faq-q__sign::after {
  transform: rotate(90deg);
  opacity: 0;
}
.page-faq .faq-q__a {
  padding: 0 18px 16px 42px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bw-moss);
}
.page-faq .faq-q__a p {
  margin: 0;
}
.page-faq .faq-q__a a {
  color: var(--bw-green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 小屏阅读 ---------- */
.page-faq .faq-mobile {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr);
}
.page-faq .faq-mobile__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-faq .faq-mobile__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.page-faq .faq-mobile__n {
  flex: none;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-green);
  background: var(--faq-soft);
  clip-path: var(--bw-cut-xs);
}
.page-faq .faq-mobile__list h3 {
  margin: 0 0 4px;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.45;
  color: var(--bw-ink);
}
.page-faq .faq-mobile__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bw-moss);
}
.page-faq .faq-mobile__fig {
  margin: 0;
}
.page-faq .faq-mobile__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--bw-mist);
  clip-path: var(--bw-cut);
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-block--support {
  border-top: 0;
  background: var(--bw-green);
  color: var(--bw-paper);
  padding: 34px 0 40px;
  position: relative;
}
.page-faq .faq-block--support::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 5px;
  background: repeating-linear-gradient(
    -45deg,
    var(--bw-sand) 0 10px,
    var(--bw-green-dark) 10px 20px
  );
}
.page-faq .faq-block--support .faq-kicker {
  color: var(--bw-sand);
}
.page-faq .faq-block--support .faq-h2 {
  color: var(--bw-paper);
}
.page-faq .faq-block--support .faq-lead-sm {
  color: rgba(251, 250, 246, 0.78);
}
.page-faq .faq-support {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}
.page-faq .faq-support__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-support__list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(251, 250, 246, 0.92);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(251, 250, 246, 0.18);
}
.page-faq .faq-support__list li span {
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-sand);
}
.page-faq .faq-support__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .faq-btn {
  display: block;
  text-align: center;
  padding: 13px 18px;
  font-family: var(--bw-font-display);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.4;
  text-decoration: none;
  clip-path: var(--bw-cut-sm);
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}
.page-faq .faq-btn--accent {
  background: var(--bw-coral);
  color: var(--bw-paper);
}
.page-faq .faq-btn--accent:hover,
.page-faq .faq-btn--accent:focus-visible {
  background: var(--bw-coral-dark);
}
.page-faq .faq-btn--plain {
  background: transparent;
  color: var(--bw-paper);
  box-shadow: inset 0 0 0 1px rgba(251, 250, 246, 0.5);
}
.page-faq .faq-btn--plain:hover,
.page-faq .faq-btn--plain:focus-visible {
  background: rgba(251, 250, 246, 0.12);
}
.page-faq .faq-support__note {
  margin: 4px 0 0;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: rgba(251, 250, 246, 0.7);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .bw-shell {
    padding: 0 28px;
  }
  .page-faq .faq-prep {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-q__a {
    padding-left: 46px;
    padding-right: 24px;
  }
  .page-faq .faq-step__body {
    padding-left: 74px;
    padding-right: 18px;
  }
  .page-faq .faq-support__actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
  .page-faq .faq-support__actions .faq-btn {
    flex: 0 0 auto;
    min-width: 180px;
  }
  .page-faq .faq-support__note {
    flex: 1 1 100%;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq {
    font-size: 17px;
  }
  .page-faq .faq-hero {
    padding: 28px 0 40px;
  }
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }
  .page-faq .faq-hero__card {
    padding: 26px 24px 22px;
  }
  .page-faq .faq-block {
    padding: 52px 0;
  }
  .page-faq .faq-head {
    margin-bottom: 28px;
    padding-bottom: 18px;
  }
  .page-faq .faq-mobile {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 46px;
    align-items: start;
  }
  .page-faq .faq-mobile__fig {
    position: sticky;
    top: calc(var(--bw-header-h) + 20px);
  }
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-support__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .page-faq .faq-support__actions .faq-btn {
    min-width: 0;
  }
  .page-faq .faq-steps {
    gap: 4px;
  }
  .page-faq .faq-step__title {
    font-size: 18px;
  }
  .page-faq .faq-figure img {
    max-height: 460px;
  }
}
<<<END>>>