.page-faq {
  --faq-rail: 264px;
  --faq-cut: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq .breadcrumb {
  padding: 18px 0 4px;
  background: var(--ink);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-mute);
}

.page-faq .breadcrumb__item + .faq-breadcrumb-sep,
.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--steel);
}

.page-faq .breadcrumb__link {
  color: var(--text-dim);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--teal);
}

/* ---------- 封面 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 48px;
  background:
    radial-gradient(circle at 84% 8%, rgba(53, 240, 192, .16), transparent 48%),
    linear-gradient(180deg, #0A1223 0%, var(--ink) 82%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(43, 58, 82, .38) 1px, transparent 1px);
  background-size: 92px 100%;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 82%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--teal);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--paper-2);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-status {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 22px 0 0;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper-2);
  background: rgba(255, 138, 61, .1);
  border-left: 3px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-faq .faq-status strong {
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-status__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 6px;
  background: var(--orange);
  border-radius: 50%;
}

.page-faq .faq-symptoms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-symptom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  background: rgba(43, 58, 82, .42);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  transition: background-color .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-symptom::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--teal);
  flex: 0 0 auto;
}

.page-faq .faq-symptom:hover,
.page-faq .faq-symptom:focus-visible {
  background: rgba(53, 240, 192, .14);
  border-color: var(--teal);
  color: var(--paper-2);
  transform: translateY(-2px);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  background: var(--steel-soft);
  clip-path: var(--faq-cut);
}

.page-faq .faq-hero__figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: contrast(1.06) saturate(.92);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, transparent 45%, rgba(7, 12, 26, .78) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--teal);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  padding-top: 40px;
  padding-bottom: 56px;
}

.page-faq .faq-rail__title,
.page-faq .faq-rail__legend-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--text-mute);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: var(--cut-sm);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--teal);
  border-color: var(--teal);
  background: rgba(53, 240, 192, .1);
}

.page-faq .faq-rail__link:hover .faq-rail__num,
.page-faq .faq-rail__link:focus-visible .faq-rail__num {
  color: var(--teal);
}

.page-faq .faq-rail__legend {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-rail__legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-mute);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 52px;
  padding-top: 44px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--teal);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.6vw, 33px);
  line-height: 1.2;
  color: var(--paper-2);
}

.page-faq .faq-group__desc {
  margin: 12px 0 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
  transition: color .2s var(--ease);
}

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

.page-faq .faq-item__summary::marker {
  content: "";
}

.page-faq .faq-item__q {
  flex: 1 1 200px;
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .faq-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--teal);
}

.page-faq .faq-item[open] .faq-item__summary::after {
  content: "−";
}

.page-faq .faq-item__summary:hover .faq-item__q,
.page-faq .faq-item__summary:focus-visible .faq-item__q {
  color: var(--teal);
}

.page-faq .faq-item[open] .faq-item__summary {
  padding-bottom: 12px;
}

.page-faq .faq-item__a {
  padding: 0 0 24px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .tag {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.6;
  white-space: nowrap;
  border: 1px solid transparent;
}

.page-faq .tag--teal {
  color: #052A21;
  background: var(--teal);
  border-color: var(--teal);
}

.page-faq .tag--orange {
  color: #2A1305;
  background: var(--orange);
  border-color: var(--orange);
}

.page-faq .tag--magenta {
  color: #2A0B20;
  background: var(--magenta);
  border-color: var(--magenta);
}

/* ---------- 步骤 ---------- */
.page-faq .steps {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-faq .steps li {
  position: relative;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding-bottom: 16px;
}

.page-faq .steps li:last-child {
  padding-bottom: 0;
}

.page-faq .steps li::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 30px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-faq .steps li:last-child::before {
  display: none;
}

.page-faq .steps__n {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* ---------- 兼容示意图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 26px 0 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: var(--faq-cut);
}

.page-faq .faq-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  opacity: .92;
}

.page-faq .faq-figure__cap {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--teal);
  border-top: 1px solid var(--line);
}

/* ---------- 暖纸支持区 ---------- */
.page-faq .faq-group--paper {
  margin-top: 52px;
  padding: 28px 20px 30px;
  background: var(--paper);
  color: var(--ink-2);
  clip-path: var(--faq-cut);
  border-top: 0;
}

.page-faq .faq-group--paper + .faq-group {
  margin-top: 44px;
}

.page-faq .faq-group--paper .faq-group__num {
  color: #B4571F;
}

.page-faq .faq-group--paper .faq-group__title {
  color: var(--ink-2);
}

.page-faq .faq-group--paper .faq-group__desc {
  color: #4B3F2E;
}

.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .support-card {
  padding: 16px 16px 18px;
  background: rgba(255, 248, 234, .72);
  border: 1px solid rgba(17, 27, 48, .16);
  border-left: 3px solid var(--ink-2);
}

.page-faq .support-card__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: #6B5B44;
}

.page-faq .support-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .support-card__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: #5B4E3B;
}

.page-faq .support-note {
  margin-top: 18px;
  padding: 16px;
  background: rgba(17, 27, 48, .06);
  border: 1px dashed rgba(17, 27, 48, .28);
}

.page-faq .support-note__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: #B4571F;
}

.page-faq .support-note__list {
  margin: 0;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: #3B3125;
}

.page-faq .support-link {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: #4B3F2E;
}

.page-faq .support-link a {
  color: #A34714;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .support-link a:hover,
.page-faq .support-link a:focus-visible {
  color: var(--ink);
}

/* ---------- 接着看 ---------- */
.page-faq .faq-next {
  padding: 40px 0 56px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--pitch) 100%);
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--teal);
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-next__link {
  display: block;
  padding: 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--paper-2);
  text-decoration: none;
  background: rgba(7, 12, 26, .82);
  transition: background-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-next__link span {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  background: rgba(53, 240, 192, .12);
  color: var(--teal);
}

.page-faq .faq-next__link:hover span,
.page-faq .faq-next__link:focus-visible span {
  color: var(--text);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .support-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-group--paper {
    padding: 34px 32px 36px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: end;
    gap: 52px;
  }

  .page-faq .faq-hero__lede {
    font-size: 16px;
  }

  .page-faq .faq-figure {
    max-width: 640px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
    padding-bottom: 72px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    padding: 12px 0;
    white-space: normal;
    background: transparent;
    border: 0;
    border-top: 1px solid var(--line);
    clip-path: none;
  }

  .page-faq .faq-rail__item:last-child .faq-rail__link {
    border-bottom: 1px solid var(--line);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: transparent;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-symptom,
  .page-faq .faq-rail__link,
  .page-faq .faq-next__link,
  .page-faq .faq-item__summary {
    transition: none;
  }

  .page-faq .faq-symptom:hover,
  .page-faq .faq-symptom:focus-visible {
    transform: none;
  }
}
<<<END>>>