.page-faq {
  --faq-hair: 1px solid var(--mist);
  --faq-hair-gold: 1px solid rgba(235, 203, 106, 0.42);
  --faq-soft: rgba(244, 246, 244, 0.72);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 44px;
  color: var(--white);
  background: linear-gradient(180deg, var(--lake-deep) 0%, var(--lake) 70%, var(--lake) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(191, 208, 216, 0.14) 1px, transparent 1px);
  background-size: 88px 100%;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

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

.page-faq .faq-hero .breadcrumbs a {
  color: var(--mist);
}

.page-faq .faq-hero .breadcrumbs a[aria-current="page"] {
  color: var(--metal);
}

.page-faq .faq-hero-frame {
  position: relative;
  padding: 26px 20px 30px;
  border: var(--faq-hair-gold);
  background: rgba(6, 47, 71, 0.42);
}

.page-faq .faq-hero-frame::before,
.page-faq .faq-hero-frame::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
}

.page-faq .faq-hero-frame::before {
  top: -1px;
  left: -1px;
  border-top: 3px solid var(--metal);
  border-left: 3px solid var(--metal);
}

.page-faq .faq-hero-frame::after {
  right: -1px;
  bottom: -1px;
  border-right: 3px solid var(--metal);
  border-bottom: 3px solid var(--metal);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 7.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-faq .faq-lede {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 246, 244, 0.9);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(235, 203, 106, 0.34);
}

.page-faq .faq-hero-stats li {
  padding: 14px 10px 0 0;
  border-right: 1px solid rgba(191, 208, 216, 0.22);
}

.page-faq .faq-hero-stats li:last-child {
  border-right: 0;
}

.page-faq .faq-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(23px, 5vw, 34px);
  line-height: 1;
  color: var(--metal);
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--faq-soft);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chips .chip {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid rgba(235, 203, 106, 0.5);
  background: transparent;
  color: var(--metal);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-chips .chip:hover,
.page-faq .faq-chips .chip:focus-visible {
  background: var(--barley);
  border-color: var(--barley);
  color: var(--lake-deep);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 72px;
}

.page-faq .faq-rail {
  align-self: start;
  padding-top: 14px;
  border-top: 2px solid var(--lake);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--lake);
}

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

.page-faq .faq-toc li {
  flex: 0 0 auto;
}

.page-faq .toc-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: var(--faq-hair);
  background: var(--white);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  border-color: var(--barley);
  color: var(--lake);
}

.page-faq .toc-link[aria-current] {
  border-color: var(--barley);
  color: var(--lake-deep);
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--barley);
}

.page-faq .faq-rail-note {
  display: none;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  margin-bottom: 52px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-sec:last-of-type {
  margin-bottom: 44px;
}

.page-faq .faq-sec-head {
  margin-bottom: 18px;
  padding-top: 16px;
  border-top: 2px solid var(--lake);
}

.page-faq .faq-sec-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--barley);
}

.page-faq .faq-sec-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.8vw, 29px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--lake-deep);
}

.page-faq .faq-sec-note {
  margin: 8px 0 0;
  font-family: var(--font-serif);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--turquoise);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: var(--faq-hair);
}

.page-faq .faq-item {
  border-bottom: var(--faq-hair);
  background: var(--white);
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--sand);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--lake-deep);
}

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

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

.page-faq .faq-q:hover {
  color: var(--lake);
}

.page-faq .faq-q-mark {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 5px;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 12px;
  height: 2px;
  background: var(--barley);
  transition: transform var(--t-mid) var(--ease), opacity var(--t-mid) var(--ease);
}

.page-faq .faq-q-mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-q-mark::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 14px 18px 14px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 68ch;
}

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

.page-faq .faq-points {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  max-width: 68ch;
}

.page-faq .faq-points li {
  position: relative;
  padding: 7px 0 7px 16px;
  border-top: 1px dashed var(--mist);
  font-size: 14px;
}

.page-faq .faq-points li:first-child {
  border-top: 0;
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 0;
  width: 7px;
  height: 2px;
  background: var(--sunset);
}

/* ---------- 图解与影格 ---------- */
.page-faq .faq-diagram {
  margin: 0 0 14px;
  padding: 14px 14px 10px;
  border: var(--faq-hair);
  border-left: 3px solid var(--barley);
  background: var(--lake-deep);
}

.page-faq .faq-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-diagram-cap {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-faq .faq-figure {
  margin: 0 0 14px;
  border: var(--faq-hair);
  background: var(--ice);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04) hue-rotate(-6deg);
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: var(--faq-hair);
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--turquoise);
}

/* ---------- 表格 ---------- */
.page-faq .faq-a .table-wrap {
  margin-top: 12px;
}

/* ---------- 收尾通道 ---------- */
.page-faq .faq-cta {
  padding: 28px 20px 30px;
  border-top: 3px solid var(--barley);
  background: var(--lake-deep);
  color: var(--white);
}

.page-faq .faq-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 4.4vw, 27px);
  line-height: 1.22;
  color: var(--white);
}

.page-faq .faq-cta p {
  max-width: 62ch;
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 246, 244, 0.86);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 中屏 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 34px 0 54px;
  }

  .page-faq .faq-hero-frame {
    padding: 34px 32px 38px;
  }

  .page-faq .faq-q {
    padding: 17px 18px;
    font-size: 16px;
  }

  .page-faq .faq-a {
    padding: 0 18px 20px 42px;
  }

  .page-faq .faq-diagram,
  .page-faq .faq-figure {
    margin-bottom: 16px;
  }

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

/* ---------- 桌面：侧栏吸附 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 60px;
    padding-top: 60px;
    padding-bottom: 96px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    max-height: calc(100vh - var(--header-h) - 56px);
    overflow-y: auto;
  }

  .page-faq .faq-toc {
    display: block;
    padding-bottom: 0;
    overflow: visible;
    border-left: var(--faq-hair);
  }

  .page-faq .faq-toc li {
    display: block;
  }

  .page-faq .toc-link {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 6px;
    margin-left: -1px;
    padding: 10px 0 10px 12px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    white-space: normal;
  }

  .page-faq .toc-link:hover,
  .page-faq .toc-link:focus-visible {
    border-left-color: var(--mist);
    color: var(--lake);
  }

  .page-faq .toc-link[aria-current] {
    border-left-color: var(--barley);
    color: var(--lake-deep);
  }

  .page-faq .faq-rail-note {
    display: block;
    margin-top: 26px;
    padding: 16px;
    border-top: 2px solid var(--barley);
    background: var(--sand);
  }

  .page-faq .faq-rail-note p {
    margin: 0 0 12px;
    font-family: var(--font-serif);
    font-size: 13px;
    line-height: 1.7;
    color: var(--lake-deep);
  }

  .page-faq .faq-sec {
    margin-bottom: 64px;
  }

  .page-faq .faq-sec-head {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 0;
    padding-top: 18px;
  }

  .page-faq .faq-sec-num {
    margin-bottom: 0;
    padding-top: 6px;
  }

  .page-faq .faq-sec-head h2,
  .page-faq .faq-sec-note {
    grid-column: 2;
  }

  .page-faq .faq-q {
    font-size: 16.5px;
  }

  .page-faq .faq-cta {
    padding: 44px 48px 46px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc {
    scroll-behavior: auto;
  }

  .page-faq .faq-q-mark::before,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-item,
  .page-faq .toc-link,
  .page-faq .faq-chips .chip {
    transition: none;
  }
}
<<<END>>>