.page-faq {
  --faq-gap: 20px;
  --faq-line: 1px solid var(--line);
  --faq-radius: 0;
}

.page-faq .faq-head {
  padding-bottom: 8px;
}

.page-faq .faq-head h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(28px, 6.4vw, 58px);
  line-height: 1.22;
  letter-spacing: 0.01em;
  margin: 10px 0 0;
  color: var(--paper);
  max-width: 18ch;
}

.page-faq .faq-head__lead {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
  margin: 18px 0 0;
}

.page-faq .faq-head__marks {
  list-style: none;
  margin: 24px 0 0;
  padding: 18px 0 0;
  border-top: var(--faq-line);
  display: grid;
  gap: 12px;
}

.page-faq .faq-head__marks li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-head__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
  min-width: 52px;
}

/* 同步节奏面板 */
.page-faq .faq-sync {
  display: grid;
  gap: var(--faq-gap);
  padding: 22px;
  background: var(--ink-2);
  border: var(--faq-line);
}

.page-faq .faq-sync h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4.4vw, 34px);
  line-height: 1.3;
  margin: 8px 0 0;
  color: var(--paper);
}

.page-faq .faq-sync__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 14px 0 0;
  max-width: 58ch;
}

.page-faq .faq-tick {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 20px;
  padding: 8px 16px 8px 14px;
  background: rgba(198, 255, 61, 0.08);
  border: 1px solid var(--lime-dim);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-tick__label {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-tick__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-tick__unit {
  font-family: var(--font-narrow);
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 22px 0 0;
  background: var(--line);
  border: var(--faq-line);
}

.page-faq .faq-stat {
  background: var(--ink-3);
  padding: 14px 14px 16px;
}

.page-faq .faq-stat dt {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-stat dd {
  margin: 8px 0 0;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  color: var(--paper);
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-sync__fig {
  border: var(--faq-line);
}

.page-faq .media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-3);
}

.page-faq .media__cap {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 10px 12px;
  border-top: var(--faq-line);
  background: var(--ink-2);
}

/* 分类目录 */
.page-faq .faq-cats {
  display: grid;
  gap: 28px;
}

.page-faq .faq-cats__index h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1.3;
  margin: 8px 0 0;
  color: var(--paper);
}

.page-faq .faq-cats__hint {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 10px 0 0;
}

.page-faq .faq-catlist {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: var(--faq-line);
}

.page-faq .faq-catlist li {
  border-bottom: var(--faq-line);
}

.page-faq .faq-catlist a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px;
  color: var(--paper);
  text-decoration: none;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-faq .faq-catlist a:hover,
.page-faq .faq-catlist a:focus-visible {
  color: var(--lime);
  padding-left: 10px;
}

.page-faq .faq-catlist__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--lime);
  letter-spacing: 0.06em;
}

.page-faq .faq-catlist__name {
  font-family: var(--font-sans);
  font-size: 15px;
}

.page-faq .faq-cats__body {
  display: grid;
  gap: 22px;
}

.page-faq .faq-cats__fig {
  border: var(--faq-line);
}

.page-faq .faq-detlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--faq-line);
}

.page-faq .faq-det {
  background: var(--ink-2);
  padding: 16px 16px 18px;
  scroll-margin-top: 96px;
}

.page-faq .faq-det h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  color: var(--paper);
}

.page-faq .faq-det__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--on-lime);
  background: var(--lime);
  padding: 2px 6px;
}

.page-faq .faq-det p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* 答疑 */
.page-faq .faq-qa__head h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 36px);
  line-height: 1.3;
  margin: 8px 0 0;
  color: var(--paper);
}

.page-faq .faq-qa__lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
  margin: 14px 0 0;
}

.page-faq .faq-qagrid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-faq .qa-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
}

.page-faq .qa-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-faq .qa-item {
  border-top: var(--faq-line);
  border-left: 2px solid transparent;
  transition: border-left-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .qa-item:last-of-type {
  border-bottom: var(--faq-line);
}

.page-faq .qa-item[open] {
  border-left-color: var(--lime);
  background: rgba(12, 32, 27, 0.72);
}

.page-faq .qa-item summary {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 12px 14px 14px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
}

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

.page-faq .qa-item summary:hover {
  color: var(--lime);
}

.page-faq .qa-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-faq .qa-item__key {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--lime-dim);
}

.page-faq .qa-item[open] .qa-item__key {
  color: var(--lime);
}

.page-faq .qa-item__body {
  padding: 0 14px 16px 14px;
}

.page-faq .qa-item__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}

/* 来源与可信度 */
.page-faq .faq-source {
  display: grid;
  gap: 28px;
}

.page-faq .faq-source__main h2 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 34px);
  line-height: 1.3;
  margin: 8px 0 0;
  color: var(--paper);
}

.page-faq .faq-source__main > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
  margin: 16px 0 0;
}

.page-faq .faq-timeline {
  margin-top: 24px;
  border-left-color: var(--orange);
  background: var(--ink-2);
  border: var(--faq-line);
  border-left: 2px solid var(--orange);
}

.page-faq .faq-timeline summary {
  font-family: var(--font-narrow);
  letter-spacing: 0.04em;
  font-size: 14px;
}

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

.page-faq .faq-timeline__list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  border-top: var(--faq-line);
  padding-top: 12px;
}

.page-faq .faq-timeline__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-faq .faq-timeline__list strong {
  display: block;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--paper);
}

.page-faq .faq-timeline__list p {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-trust {
  background: var(--ink-2);
  border: var(--faq-line);
  padding: 22px 20px 20px;
  position: relative;
}

.page-faq .faq-trust h3 {
  margin: 6px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

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

.page-faq .faq-trust li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--lime-dim);
}

.page-faq .faq-trust li strong {
  color: var(--lime);
  font-family: var(--font-narrow);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 4px;
}

.page-faq .faq-trust__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--faq-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--orange);
}

/* 下一步 */
.page-faq .faq-next__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 4vh, 28px);
  line-height: 1.3;
  margin: 0 0 18px;
  color: var(--paper);
}

.page-faq .faq-next {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next__card {
  display: block;
  padding: 20px 18px;
  background: var(--ink-2);
  border: var(--faq-line);
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: background-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  background: var(--ink-3);
  transform: translateY(-2px);
}

.page-faq .faq-next__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--on-lime);
  background: var(--lime);
  padding: 3px 8px;
}

.page-faq .faq-next__card strong {
  display: block;
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
}

.page-faq .faq-next__card p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-next__go {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-narrow);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-next__foot {
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-next__foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-dim);
}

@media (min-width: 700px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-sync__fig {
    max-height: 320px;
    overflow: hidden;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-sync {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    padding: 32px;
    gap: 32px;
  }

  .page-faq .faq-sync__fig {
    max-height: none;
  }

  .page-faq .faq-cats {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 2fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-cats__index {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-cats__body {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-faq .faq-cats__fig {
    grid-row: span 2;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-qagrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 40px;
  }

  .page-faq .faq-source {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-catlist a,
  .page-faq .qa-item,
  .page-faq .faq-next__card {
    transition: none;
  }

  .page-faq .faq-next__card:hover {
    transform: none;
  }
}
<<<END>>>