.page-faq {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

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

.page-faq .container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 20px 0 36px;
  background:
    radial-gradient(circle at 88% 6%, rgba(56, 242, 208, 0.16), transparent 52%),
    radial-gradient(circle at 4% 92%, rgba(164, 74, 53, 0.22), transparent 46%),
    linear-gradient(196deg, var(--ink-lift) 0%, var(--ink) 64%);
  border-bottom: 2px solid var(--line-strong);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(138, 143, 134, 0.14) 0 1px, transparent 1px 56px);
  pointer-events: none;
}

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

.page-faq .breadcrumbs {
  margin-bottom: 22px;
}

.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: 11px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-faq .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--moss);
}

.page-faq .breadcrumb-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumb-current {
  color: var(--paper);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(32px, 8vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
  text-shadow: 3px 3px 0 rgba(3, 8, 7, 0.7);
}

.page-faq .faq-hero__sub {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.62;
  color: rgba(242, 237, 227, 0.78);
}

.page-faq .faq-hero__panel {
  padding: 18px 16px;
  border: 2px solid var(--line-strong);
  border-top: 3px solid var(--cyan);
  background: rgba(3, 8, 7, 0.55);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
}

.page-faq .faq-steps__num {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(56, 242, 208, 0.5);
  padding: 1px 6px;
}

.page-faq .faq-steps__text {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(242, 237, 227, 0.86);
}

.page-faq .faq-hero__cta {
  display: inline-block;
  width: 100%;
  text-align: center;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-top: 32px;
  padding-bottom: 64px;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail {
  position: static;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  min-height: 44px;
  white-space: nowrap;
  text-decoration: none;
  color: rgba(242, 237, 227, 0.72);
  border: 1px solid var(--line);
  background: rgba(12, 42, 32, 0.55);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-rail__label {
  font-size: 13px;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan);
}

.page-faq .faq-rail__link.is-active {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-rail__link.is-active .faq-rail__num {
  color: var(--ink);
}

.page-faq .faq-rail__note {
  display: none;
}

/* ---------- 章节 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 34px;
  min-width: 0;
}

.page-faq .faq-chapter {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-top: 20px;
  border-top: 3px solid var(--moss);
  min-width: 0;
}

.page-faq .faq-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .faq-chapter__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--clay);
}

.page-faq .faq-chapter__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 27px);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-faq .faq-chapter__rule {
  margin: 0 0 18px;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--cyan-soft);
  border: 1px solid rgba(56, 242, 208, 0.42);
  border-left: 3px solid var(--cyan);
  background: rgba(56, 242, 208, 0.07);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
}

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

.page-faq .faq-item__sum {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item__mark {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  letter-spacing: 0.08em;
  color: var(--moss);
  flex: none;
}

.page-faq .faq-q {
  flex: 1;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-item__sum::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__sum::after {
  content: "\2212";
  color: var(--flare);
}

.page-faq .faq-item[open] .faq-item__mark {
  color: var(--cyan);
}

.page-faq .faq-item__sum:hover .faq-q,
.page-faq .faq-item__sum:focus-visible .faq-q {
  color: var(--cyan-soft);
}

.page-faq .faq-item__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-a {
  padding: 0 0 18px 30px;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: rgba(242, 237, 227, 0.76);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 208, 0.45);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 适配章节：米白纸面 ---------- */
.page-faq .faq-chapter--paper {
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--black);
  border-top: 3px solid var(--clay);
  box-shadow: var(--shadow-hard);
  padding: 20px 16px;
}

.page-faq .faq-chapter--paper .faq-chapter__title {
  color: var(--ink);
}

.page-faq .faq-chapter--paper .faq-chapter__num {
  color: var(--clay);
}

.page-faq .faq-chapter--paper .faq-chapter__rule {
  color: var(--ink);
  background: rgba(56, 242, 208, 0.24);
  border-color: rgba(3, 8, 7, 0.35);
  border-left-color: var(--moss);
}

.page-faq .faq-chapter--paper .faq-item {
  border-bottom-color: rgba(3, 8, 7, 0.18);
}

.page-faq .faq-chapter--paper .faq-q {
  color: var(--ink);
}

.page-faq .faq-chapter--paper .faq-item__mark {
  color: var(--clay);
}

.page-faq .faq-chapter--paper .faq-item__sum::after {
  color: var(--moss);
}

.page-faq .faq-chapter--paper .faq-item[open] .faq-item__sum::after {
  color: var(--flare);
}

.page-faq .faq-chapter--paper .faq-item__sum:hover .faq-q,
.page-faq .faq-chapter--paper .faq-item__sum:focus-visible .faq-q {
  color: var(--clay);
}

.page-faq .faq-chapter--paper .faq-a p {
  color: rgba(3, 8, 7, 0.78);
}

.page-faq .faq-chapter--paper .faq-a a {
  color: var(--clay);
  border-bottom-color: rgba(164, 74, 53, 0.5);
}

.page-faq .faq-chapter--paper .faq-a a:hover,
.page-faq .faq-chapter--paper .faq-a a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-faq .faq-chapter--paper .mono {
  color: var(--clay);
}

/* ---------- 适配章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
}

.page-faq .faq-figure .media-frame__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

.page-faq .faq-figure .media-frame__caption {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(3, 8, 7, 0.62);
  padding-top: 8px;
}

/* ---------- 联系章节 ---------- */
.page-faq .faq-chapter--dark {
  border-top-color: var(--flare);
  background:
    linear-gradient(168deg, rgba(79, 111, 82, 0.32), transparent 58%),
    var(--ink-lift);
  padding: 20px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-faq .faq-chapter--dark .faq-chapter__title {
  color: var(--paper);
}

.page-faq .faq-support {
  margin-top: 22px;
  border: 2px solid var(--black);
  box-shadow: var(--shadow-hard);
  background: var(--moss);
  padding: 16px 14px;
}

.page-faq .faq-support__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(3, 8, 7, 0.32);
}

.page-faq .faq-support__row:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-support__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: rgba(3, 8, 7, 0.66);
}

.page-faq .faq-support__value {
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--black);
  word-break: break-word;
}

.page-faq .faq-support__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(3, 8, 7, 0.28);
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(3, 8, 7, 0.76);
}

.page-faq .faq-support__note a {
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid rgba(3, 8, 7, 0.6);
}

.page-faq .faq-support__note a:hover,
.page-faq .faq-support__note a:focus-visible {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .container {
    padding: 0 28px;
  }

  .page-faq .faq-hero {
    padding: 26px 0 48px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-hero__cta {
    width: auto;
  }

  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    padding-top: 44px;
    padding-bottom: 88px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__list li {
    margin-bottom: 2px;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    padding: 9px 12px;
    white-space: normal;
    margin-left: -1px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: rgba(56, 242, 208, 0.08);
    border-left-color: var(--cyan);
  }

  .page-faq .faq-rail__link.is-active {
    background: rgba(56, 242, 208, 0.14);
    border-left: 2px solid var(--cyan);
    color: var(--cyan-soft);
  }

  .page-faq .faq-rail__link.is-active .faq-rail__num {
    color: var(--cyan);
  }

  .page-faq .faq-rail__note {
    display: block;
    margin: 18px 0 0;
    padding-left: 12px;
    font-size: 11.5px;
    line-height: 1.6;
    color: var(--stone);
  }

  .page-faq .faq-body {
    gap: 46px;
  }

  .page-faq .faq-chapter {
    padding-top: 26px;
  }

  .page-faq .faq-chapter--paper,
  .page-faq .faq-chapter--dark {
    padding: 26px 26px 30px;
  }

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

  .page-faq .faq-a {
    padding-left: 34px;
    padding-right: 40px;
  }

  .page-faq .faq-support__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

  .page-faq .faq-support {
    padding: 18px 22px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-shell {
    grid-template-columns: 260px minmax(0, 1fr);
  }

  .page-faq .faq-chapter__num {
    font-size: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-item__sum {
    transition: none;
  }
}
<<<END>>>