.page-faq {
  --faq-rail: 250px;
  --faq-pad: 22px;
  background:
    radial-gradient(120% 80% at 92% -12%, rgba(18, 63, 85, 0.9) 0%, rgba(6, 24, 38, 0) 62%),
    var(--ink);
  color: var(--porcelain);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  padding-bottom: 64px;
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-flow {
  padding-top: 20px;
}

.page-faq .breadcrumb {
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.page-faq .section {
  padding: 44px 0 0;
}

.page-faq .section-head {
  margin-bottom: 20px;
}

.page-faq .section-head__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-size: clamp(22px, 5.4vw, 34px);
  margin: 8px 0 0;
  color: var(--porcelain);
}

.page-faq .section-head__note {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  color: var(--silver);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 6px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -120px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 227, 208, 0.16), rgba(47, 227, 208, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-size: clamp(30px, 8vw, 60px);
  margin: 10px 0 0;
  max-width: 13em;
  color: var(--porcelain);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 16px;
  font-weight: 400;
  color: var(--silver);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--amber);
  line-height: 1;
}

.page-faq .faq-hero__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 分类概览 */
.page-faq .faq-cats__body {
  display: grid;
  gap: 20px;
}

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

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

.page-faq .faq-cat {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  background: var(--panel);
  border: 1px solid transparent;
  color: var(--porcelain);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  background: var(--band);
  border-color: var(--line);
  color: var(--porcelain);
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-cat__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--porcelain);
}

.page-faq .faq-cat__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--sage);
  white-space: nowrap;
}

/* 问答区 */
.page-faq .faq-qa__layout {
  display: grid;
  gap: 22px;
}

.page-faq .faq-index {
  background: var(--panel);
  border-radius: var(--r-md);
  padding: 16px 18px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--band);
  color: var(--silver);
  font-size: 13.5px;
  white-space: nowrap;
}

.page-faq .faq-index__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--panel);
  color: var(--porcelain);
}

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-faq .faq-group {
  margin-bottom: 30px;
  scroll-margin-top: 90px;
}

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

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--porcelain);
}

.page-faq .faq-group__title .mono-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-faq .faq-item {
  position: relative;
  background: var(--panel);
  border-radius: var(--r-md);
  margin-bottom: 10px;
  overflow: hidden;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 227, 208, 0));
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.24s var(--ease);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--porcelain);
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--cyan);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -4px;
}

.page-faq .faq-item__q::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 6px;
  margin-left: auto;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
  margin-top: 10px;
}

.page-faq .faq-item__a {
  padding: 0 20px 18px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__next {
  font-size: 14px;
  color: var(--sage);
}

/* 检索与定位 */
.page-faq .faq-locate__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-locate__panel {
  padding: var(--faq-pad);
}

.page-faq .faq-locate__panel .mono-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 10px;
}

.page-faq .faq-locate__panel p {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--silver);
}

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

.page-faq .faq-keywords a {
  display: inline-block;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-keywords a:hover,
.page-faq .faq-keywords a:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 227, 208, 0.1);
  color: var(--porcelain);
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

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

/* 条目状态 */
.page-faq .faq-review__grid {
  display: grid;
  gap: 12px;
}

.page-faq .faq-review__card {
  background: var(--panel);
  border-radius: var(--r-md);
  padding: 20px;
  border-top: 2px solid var(--line);
}

.page-faq .faq-review__card--cyan {
  border-top-color: var(--cyan);
}

.page-faq .faq-review__card--amber {
  border-top-color: var(--amber);
}

.page-faq .faq-review__card--sage {
  border-top-color: var(--sage);
}

.page-faq .faq-review__card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--porcelain);
}

.page-faq .faq-review__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

/* 联系 */
.page-faq .faq-help__panel {
  background: linear-gradient(155deg, var(--band) 0%, var(--panel) 52%, var(--ink) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px 22px;
}

.page-faq .faq-help__panel h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-size: clamp(24px, 6vw, 38px);
  color: var(--porcelain);
}

.page-faq .faq-help__panel > p {
  margin: 0 0 20px;
  max-width: 52ch;
  font-size: 15px;
  color: var(--silver);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--porcelain);
  word-break: break-word;
}

.page-faq .faq-help__list span {
  min-width: 44px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* 平板与桌面 */
@media (min-width: 720px) {
  .page-faq {
    --faq-pad: 26px;
  }

  .page-faq .section {
    padding-top: 56px;
  }

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

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

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

  .page-faq .faq-item__q {
    padding: 18px 24px;
    font-size: 16px;
  }

  .page-faq .faq-item__a {
    padding: 0 24px 20px 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-qa__layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-index__list a {
    border-radius: var(--r-sm);
    background: transparent;
    padding: 9px 12px;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    background: var(--band);
  }

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

  .page-faq .faq-locate__figure {
    grid-column: 1 / -1;
  }

  .page-faq .faq-review__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-cats__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-hero {
    padding-top: 34px;
  }

  .page-faq .faq-help__panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 8px 40px;
    padding: 44px 40px;
  }

  .page-faq .faq-help__panel > .eyebrow,
  .page-faq .faq-help__panel > h2,
  .page-faq .faq-help__panel > p,
  .page-faq .faq-help__list {
    grid-column: 1;
  }

  .page-faq .faq-help__panel > .btn {
    grid-column: 2;
    grid-row: 2 / span 3;
    align-self: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-item__q::after,
  .page-faq .faq-cat,
  .page-faq a {
    transition: none;
  }
}
<<<END>>>