.page-faq {
  --faq-pad: clamp(20px, 4vw, 44px);
  position: relative;
  padding: var(--faq-pad) 0 clamp(48px, 8vw, 96px);
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 96px 96px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 96px 96px,
    var(--night);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: clamp(24px, 5vw, 48px);
}

.page-faq .faq-crumbs a {
  color: var(--mid);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

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

.page-faq .faq-crumbs span[aria-current="page"] {
  color: var(--text);
}

/* 首屏 */
.page-faq .faq-hero {
  max-width: 900px;
  padding-bottom: clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--narrow);
  font-size: clamp(28px, 6.2vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-family: var(--serif);
  font-size: clamp(15px, 2.2vw, 17px);
  color: var(--text);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__meta .num {
  font-size: 18px;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  margin-top: clamp(28px, 5vw, 52px);
}

.page-faq .faq-index {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-index__list a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-index__list a .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--grid-gray);
  font-variant-numeric: tabular-nums;
  transition: color 0.18s var(--ease);
}

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

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

.page-faq .faq-index__note {
  margin: 16px 0 0;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.8;
}

/* 分组 */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group__tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--narrow);
  font-size: clamp(19px, 3.2vw, 26px);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--white);
}

/* 折叠条目 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--text-dim);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--signal);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--signal-soft);
}

.page-faq .faq-item summary:focus-visible {
  outline: 1px solid var(--signal-soft);
  outline-offset: 3px;
}

.page-faq .faq-item__num {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--grid-gray);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-item__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .faq-item__a {
  padding: 0 0 20px 0;
  max-width: 66ch;
  font-size: 14.5px;
  color: var(--text);
}

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

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

.page-faq .faq-item__a .faq-status {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--pitch);
}

.page-faq .faq-item__a .faq-status--contact {
  color: var(--signal-soft);
}

/* 对照表 */
.page-faq .faq-compare {
  width: 100%;
  margin: 16px 0 4px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-faq .faq-compare caption {
  text-align: left;
  padding-bottom: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line-faint);
  overflow-wrap: anywhere;
}

.page-faq .faq-compare thead th {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--ice);
  background: var(--sky-deep);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-compare tbody th {
  font-weight: 500;
  color: var(--text);
  width: 58%;
}

.page-faq .faq-compare tbody td {
  color: var(--white);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

/* 图 */
.page-faq .faq-figure {
  margin: 12px 0 18px;
  border: 1px solid var(--line-soft);
  background: var(--night-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-figure figcaption {
  padding: 9px 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--text-dim);
}

/* 纠错分栏 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

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

.page-faq .faq-figure--side {
  margin: 0;
  align-self: start;
}

/* 收尾 */
.page-faq .faq-group--next {
  border-top: 1px solid var(--line);
  padding-top: clamp(20px, 4vw, 32px);
  margin-bottom: 0;
}

.page-faq .faq-next__lede {
  margin: 14px 0 18px;
  max-width: 58ch;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--text);
}

.page-faq .faq-next__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-faq .faq-next__list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-next__list .link-tag {
  justify-self: start;
  font-size: 15px;
  font-weight: 600;
  color: var(--ice);
}

.page-faq .faq-next__list li > span {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 4vw, 44px);
  }

  .page-faq .faq-item summary {
    padding: 18px 0;
  }

  .page-faq .faq-item__a {
    padding-left: 34px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(200px, 250px) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    align-self: start;
    border-top: none;
    padding-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 44px);
    align-items: start;
  }

  .page-faq .faq-split .faq-compare {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-index__list a,
  .page-faq .faq-index__list a .num,
  .page-faq .faq-crumbs a {
    transition: none;
  }
}
<<<END>>>