.page-faq {
  background: var(--ink-900);
  color: var(--mist);
  overflow-x: clip;
}

.page-faq .faq-wrap {
  padding-block: 24px 80px;
}

.page-faq .faq-crumbs {
  margin-bottom: 26px;
  font-size: 13px;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 32px;
  padding-block: 4px 40px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__plate {
  display: inline-block;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.14;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 22px;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-hero__status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gray-dim);
}

.page-faq .faq-hero__fig {
  margin: 0;
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-faq .faq-hero__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--gray-dim);
}

/* 布局：左侧粘性目录 + 右侧问答流 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 44px;
}

.page-faq .faq-toc {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 14px;
}

.page-faq .faq-toc__head {
  margin: 0 0 12px;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--amber);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__link {
  display: block;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--gray);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--mist);
  background: var(--amber-soft);
  border-left-color: var(--amber);
  outline: none;
}

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

/* 章节 */
.page-faq .faq-section {
  padding-bottom: 60px;
}

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

.page-faq .faq-section__lede {
  margin: 0 0 26px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-section__lede a {
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--amber);
}

.page-faq .faq-section__lede a:hover {
  color: var(--amber);
}

/* 分类索引 */
.page-faq .cat-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .cat-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 18px;
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .cat-card:hover {
  border-color: var(--amber);
  background: var(--ink-800);
}

.page-faq .cat-card__count {
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-faq .cat-card__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.page-faq .cat-card__desc {
  flex: 1;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .cat-card__link {
  font-size: 13px;
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line);
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}

.page-faq .cat-card__link:hover {
  color: var(--amber);
  text-decoration-color: var(--amber);
}

/* 六步清单 */
.page-faq .check-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-faq .check-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.page-faq .check-step {
  padding: 22px 16px 22px 18px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: background var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-faq .check-step:hover {
  background: var(--amber-soft);
  border-left-color: var(--amber);
}

.page-faq .check-step__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .check-step__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .check-step__body {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .check-step__watch {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--jade);
}

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

.page-faq .check-fig {
  margin: 0;
}

.page-faq .check-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-faq .check-fig figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray-dim);
}

/* 问答手风琴 */
.page-faq .qa-list {
  border-top: 1px solid var(--line);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-left-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .qa-item:hover {
  background: var(--amber-soft);
}

.page-faq .qa-item:hover,
.page-faq .qa-item[data-open] {
  border-left-color: var(--amber);
}

.page-faq .step-card__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 12px 18px 14px;
  background: none;
  border: 0;
  color: inherit;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}

.page-faq .step-card__head:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .step-card__num {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .step-card__title {
  flex: 1;
  min-width: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .step-card__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .step-card__sign::before,
.page-faq .step-card__sign::after {
  content: "";
  position: absolute;
  background: var(--amber);
}

.page-faq .step-card__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 1.5px;
}

.page-faq .step-card__sign::after {
  left: 7px;
  top: 0;
  width: 1.5px;
  height: 16px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa-item[data-open] .step-card__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .step-card__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease);
}

.page-faq .step-card__panel > div {
  overflow: hidden;
  padding: 0 16px 0 46px;
}

.page-faq .qa-item[data-open] .step-card__panel {
  grid-template-rows: 1fr;
}

.page-faq .qa-item[data-open] .step-card__panel > div {
  padding-bottom: 18px;
}

.page-faq .step-card__panel p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .qa-concl {
  margin: 0 !important;
  padding-left: 10px;
  border-left: 2px solid var(--jade);
  font-size: 13.5px !important;
  color: var(--jade) !important;
}

/* 求助区 */
.page-faq .help-card {
  margin-top: 8px;
  padding: 36px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-faq .help-card__lede {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .help-list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .help-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .help-list .ds-mono {
  color: var(--amber);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-faq .help-card__cta {
  display: inline-block;
}

.page-faq .help-channels {
  margin-top: 28px;
  padding: 22px 20px;
  background: var(--paper);
  color: var(--ink-900);
  border-radius: var(--radius);
}

.page-faq .help-channels__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ink-700);
}

.page-faq .help-channels__row {
  display: grid;
  gap: 2px;
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .help-channels__row span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-700);
}

.page-faq .help-channels__row strong {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 600;
  word-break: break-all;
  color: var(--ink-900);
}

.page-faq .help-channels__note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid rgba(8, 25, 42, .16);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-700);
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-faq .cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .check-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .check-step:nth-child(odd) {
    border-right: 1px solid var(--line);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-wrap {
    padding-block: 32px 96px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 52px;
    align-items: center;
    padding-block: 12px 52px;
  }

  .page-faq .help-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 44px;
    align-items: start;
    padding: 56px 44px;
  }

  .page-faq .help-channels {
    margin-top: 0;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 76px;
  }

  .page-faq .check-wrap {
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card__panel,
  .page-faq .step-card__sign::after,
  .page-faq .cat-card,
  .page-faq .check-step,
  .page-faq .qa-item,
  .page-faq .faq-toc__link {
    transition: none;
  }
}
<<<END>>>