.page-faq {
  --faq-rail-w: 178px;
  padding: 22px 0 72px;
  background:
    radial-gradient(760px 380px at 84% -6%, rgba(200, 255, 61, 0.055), transparent 70%),
    radial-gradient(620px 360px at 4% 14%, rgba(127, 216, 201, 0.045), transparent 72%),
    var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-faq .breadcrumbs {
  margin-bottom: 24px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-bottom: 42px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 18ch;
  font-size: clamp(29px, 6.4vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.022em;
  color: var(--paper);
}

.page-faq .faq-h1-mark {
  color: var(--lime);
}

.page-faq .faq-lede {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.8;
  color: var(--paper);
  opacity: 0.78;
}

.page-faq .faq-hero-media {
  margin: 28px 0 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--ink-2);
  overflow: hidden;
  aspect-ratio: 12 / 5;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.6) contrast(1.1) brightness(0.82);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

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

.page-faq .faq-rail {
  order: -1;
  min-width: 0;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-rail-title {
  margin: 0 0 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--clay);
}

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

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

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px 7px 9px;
  border: 1px solid var(--line);
  border-left-width: 2px;
  background: var(--ink-2);
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
  background: rgba(200, 255, 61, 0.06);
}

.page-faq .faq-rail-no {
  font-family: var(--font-num);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--clay);
}

.page-faq .faq-rail-link:hover .faq-rail-no,
.page-faq .faq-rail-link:focus-visible .faq-rail-no {
  color: var(--lime);
}

.page-faq .faq-rail-label {
  font-weight: 600;
}

/* ---------- 分节 ---------- */
.page-faq .faq-group {
  margin-bottom: 48px;
  scroll-margin-top: 92px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: center;
  padding: 0 0 12px;
  border-bottom: 2px solid var(--line);
  margin-bottom: 14px;
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-size: clamp(19px, 3.4vw, 26px);
  line-height: 1.24;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-faq .faq-group-head h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 10px;
  background: var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  transform: translateY(-2px);
}

.page-faq .faq-group-intro {
  max-width: 64ch;
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 问答折叠条目 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(46, 79, 63, 0.55);
}

.page-faq .qa {
  border-left: 2px solid var(--line);
  border-bottom: 1px solid rgba(46, 79, 63, 0.55);
  background: transparent;
  transition: background-color 0.25s var(--ease), border-left-color 0.25s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(200, 255, 61, 0.075), rgba(200, 255, 61, 0) 66%);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 8px;
  padding: 15px 12px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14px, 1.75vw, 16.5px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa-q::marker {
  content: "";
}

.page-faq .qa-q:hover,
.page-faq .qa-q:focus-visible {
  color: var(--lime);
}

.page-faq .qa-idx {
  padding-top: 4px;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.page-faq .qa[open] .qa-idx {
  color: var(--lime);
}

.page-faq .qa-mark {
  position: relative;
  width: 13px;
  height: 13px;
  margin-top: 6px;
  justify-self: end;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .qa-mark::before {
  width: 13px;
  height: 2px;
}

.page-faq .qa-mark::after {
  width: 2px;
  height: 13px;
}

.page-faq .qa[open] .qa-mark::before {
  background: var(--orange);
}

.page-faq .qa[open] .qa-mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa-a {
  padding: 0 14px 18px 14px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-faq .qa[open] .qa-a {
  animation: faq-answer-in 0.28s var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .qa-a p {
  margin: 0 0 10px;
}

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

.page-faq .qa-a a {
  color: var(--lime);
  text-decoration: underline;
  text-decoration-color: rgba(200, 255, 61, 0.4);
  text-underline-offset: 3px;
}

.page-faq .qa-a a:hover {
  text-decoration-color: var(--lime);
}

/* 步骤串 */
.page-faq .qa-steps {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: qa-step;
}

.page-faq .qa-steps li {
  position: relative;
  padding: 0 0 14px 28px;
  counter-increment: qa-step;
  line-height: 1.72;
}

.page-faq .qa-steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: var(--ink-2);
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.page-faq .qa-steps li::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 23px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(46, 79, 63, 0));
}

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

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

/* ---------- 章节内配图 ---------- */
.page-faq .faq-inline-media {
  margin: 24px 0 6px;
  padding-left: 14px;
  border-left: 2px solid var(--lime);
}

.page-faq .faq-inline-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 2px solid var(--line);
  background: var(--ink-2);
  filter: saturate(0.65) contrast(1.08) brightness(0.85);
}

.page-faq .faq-inline-media figcaption {
  margin-top: 9px;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 自检清单 ---------- */
.page-faq .faq-check {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-check-item {
  position: relative;
}

.page-faq .faq-check-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-check-label {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-left-width: 2px;
  background: var(--ink-2);
  color: var(--paper);
  font-size: 14.5px;
  line-height: 1.65;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-check-label:hover {
  border-color: var(--line-2);
  background: #0D231C;
}

.page-faq .faq-check-input:focus-visible + .faq-check-label {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .faq-check-box {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid var(--line-2);
  background: var(--ink);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-check-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0);
  transform-origin: center;
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-check-input:checked + .faq-check-label {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(200, 255, 61, 0.07), rgba(200, 255, 61, 0) 70%);
  color: var(--muted);
}

.page-faq .faq-check-input:checked + .faq-check-label .faq-check-box {
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-check-input:checked + .faq-check-label .faq-check-box::after {
  transform: rotate(-45deg) scale(1);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  margin-top: 40px;
  padding: 24px 20px;
  border: 2px solid var(--line);
  border-left: 4px solid var(--orange);
  background:
    linear-gradient(120deg, rgba(255, 122, 26, 0.1), rgba(11, 15, 13, 0) 64%),
    var(--ink-2);
  box-shadow: var(--shadow);
}

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.8vw, 23px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-cta p {
  max-width: 60ch;
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面端：右侧编号轨道 ---------- */
@media (min-width: 960px) {
  .page-faq {
    padding: 34px 0 96px;
  }

  .page-faq .faq-hero {
    margin-bottom: 56px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 760px) var(--faq-rail-w);
    justify-content: space-between;
    gap: 44px;
  }

  .page-faq .faq-rail {
    order: 0;
    position: sticky;
    top: 84px;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-rail-link {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    gap: 10px;
    width: 100%;
    padding: 10px 0 10px 12px;
    border: 0;
    border-left: 2px solid var(--line);
    background: transparent;
    white-space: normal;
    font-size: 13px;
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link:focus-visible {
    background: rgba(200, 255, 61, 0.05);
  }

  .page-faq .qa-q {
    grid-template-columns: 34px minmax(0, 1fr) 22px;
    gap: 12px;
    padding: 17px 18px;
  }

  .page-faq .qa-a {
    padding: 0 22px 22px 64px;
  }

  .page-faq .faq-cta {
    padding: 30px 28px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 780px) var(--faq-rail-w);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] .qa-a {
    animation: none;
  }

  .page-faq .qa,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after,
  .page-faq .qa-q,
  .page-faq .qa-idx,
  .page-faq .faq-rail-link,
  .page-faq .faq-check-box,
  .page-faq .faq-check-box::after,
  .page-faq .faq-check-label {
    transition: none;
  }
}
<<<END>>>