.page-faq {
  --faq-sticky-top: 96px;
  --faq-gap: 20px;
}

.page-faq .faq-hero {
  display: grid;
  gap: 32px;
  padding-top: 10px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--line-moss);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lede {
  margin-top: 14px;
  max-width: 52ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .fact {
  padding-top: 12px;
  border-top: 2px solid var(--line-moss);
}

.page-faq .fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--amber);
}

.page-faq .fact__unit {
  font-size: 12px;
  margin-left: 3px;
  color: var(--fog);
}

.page-faq .fact__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog);
}

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

.page-faq .faq-hero__media .media__frame {
  border: 2px solid var(--line-moss);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--turf-deep);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-hero__media .media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog);
}

/* 目录 + 正文 */
.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  padding-top: 30px;
  padding-bottom: 56px;
}

.page-faq .faq-toc__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fog);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__list li {
  flex: 0 0 auto;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  min-height: 44px;
  border: 1px solid var(--line-moss);
  background: var(--turf-deep);
  color: var(--bone);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-color: var(--signal);
  background: var(--panel-ink);
  transform: translateY(-1px);
}

.page-faq .faq-toc__list a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal);
}

/* 章节 */
.page-faq .faq-section {
  padding-top: 26px;
  margin-bottom: 40px;
  border-top: 1px solid var(--line-moss);
}

.page-faq .faq-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-section__head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.page-faq .faq-section:target .faq-section__num {
  color: var(--amber);
}

.page-faq .faq-section__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

.page-faq .faq-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog);
}

/* 步骤条 */
.page-faq .steps {
  display: grid;
  gap: 0;
  margin-top: 6px;
}

.page-faq .step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line-moss);
}

.page-faq .step:first-child {
  border-top: 2px solid var(--line-moss);
}

.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
  color: var(--signal);
}

.page-faq .step__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--fog);
}

/* 问答手风琴 */
.page-faq .qa {
  margin-top: 12px;
  border-top: 1px solid var(--line-moss);
  background: transparent;
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--bone);
  transition: color 180ms ease;
}

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

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--signal);
}

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

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}

.page-faq .qa__body {
  padding: 0 0 16px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--fog);
}

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

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

.page-faq .qa__body a {
  color: var(--signal);
}

/* 版本小测验 */
.page-faq .quiz {
  margin-top: 18px;
  padding: 18px;
  border: 2px solid var(--line-moss);
  background: var(--panel-ink);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .quiz__options {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.page-faq .quiz__opt {
  display: block;
}

.page-faq .quiz__opt:focus-within {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .quiz__chip {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line-moss);
  background: var(--turf-deep);
  color: var(--fog);
  font-size: 14px;
  line-height: 1.6;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.page-faq .quiz__chip:hover {
  border-color: var(--signal-dim);
  color: var(--bone);
  transform: translateY(-1px);
}

.page-faq .quiz__result {
  display: none;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-moss);
  font-size: 14px;
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .quiz__result--stable {
  display: block;
}

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

.page-faq .quiz__verdict {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .quiz__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 2px;
}

.page-faq .quiz__link:hover,
.page-faq .quiz__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-faq .quiz__link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .quiz:has(#faq-s1:checked) label[for="faq-s1"],
.page-faq .quiz:has(#faq-s2:checked) label[for="faq-s2"],
.page-faq .quiz:has(#faq-s3:checked) label[for="faq-s3"] {
  border-color: var(--signal);
  background: rgba(77, 255, 184, 0.08);
  color: var(--bone);
}

.page-faq .quiz:has(#faq-s2:checked) .quiz__result--stable,
.page-faq .quiz:has(#faq-s3:checked) .quiz__result--stable {
  display: none;
}

.page-faq .quiz:has(#faq-s2:checked) .quiz__result--regular {
  display: block;
}

.page-faq .quiz:has(#faq-s3:checked) .quiz__result--long {
  display: block;
}

/* 版本对比卡 */
.page-faq .version-pair {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.page-faq .version-card {
  padding: 18px;
  border: 2px solid var(--line-moss);
  background: var(--turf-deep);
}

.page-faq .version-card--stable {
  border-color: var(--signal-dim);
}

.page-faq .version-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-faq .version-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--bone);
}

.page-faq .version-card__text {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--fog);
}

.page-faq .meters {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .meter {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 10px;
}

.page-faq .meter__label {
  font-size: 12px;
  color: var(--fog);
}

.page-faq .meter__value {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--bone);
  justify-self: end;
}

.page-faq .meter__track {
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  background: var(--line-moss);
}

.page-faq .meter__fill {
  display: block;
  height: 100%;
  background: var(--signal);
}

.page-faq .version-card--regular .meter__fill {
  background: var(--amber);
}

.page-faq .lvl-1 { width: 20%; }
.page-faq .lvl-2 { width: 40%; }
.page-faq .lvl-3 { width: 60%; }
.page-faq .lvl-4 { width: 80%; }
.page-faq .lvl-5 { width: 100%; }

/* 筛选章节 */
.page-faq .filter-grid {
  display: grid;
  gap: 22px;
}

.page-faq .filter-grid__media {
  margin: 0;
}

.page-faq .filter-grid__media .media__frame {
  border: 2px solid var(--line-moss);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--turf-deep);
}

.page-faq .filter-grid__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-faq .filter-grid__media .media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog);
}

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

.page-faq .bullets li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--fog);
}

.page-faq .bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 12px;
  height: 2px;
  background: var(--signal);
}

.page-faq .bullets strong {
  color: var(--bone);
  font-weight: 700;
}

/* 阅读舒适度 */
.page-faq .comfort-grid {
  display: grid;
  gap: 14px;
  margin-top: 4px;
}

.page-faq .comfort-card {
  padding: 16px;
  border-left: 3px solid var(--signal-dim);
  background: var(--turf-deep);
}

.page-faq .comfort-card__title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--bone);
}

.page-faq .comfort-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--fog);
}

/* 联系卡 */
.page-faq .contact-card {
  margin-top: 18px;
  padding: 18px;
  border: 2px solid var(--line-moss);
  background: var(--panel-ink);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 12px;
}

.page-faq .copy-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-moss);
}

.page-faq .copy-line__label {
  flex: 0 0 68px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fog);
}

.page-faq .copy-line__value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--bone);
  text-decoration: none;
  border-bottom: 1px solid var(--line-moss);
  padding-bottom: 1px;
  word-break: break-all;
}

.page-faq .copy-line__value:hover,
.page-faq .copy-line__value:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-faq .copy-line__value:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .copy-line__action {
  margin-left: auto;
}

.page-faq .contact-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--fog);
}

.page-faq .faq-inline-link {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--fog);
}

.page-faq .faq-inline-link a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  padding-bottom: 1px;
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-inline-link a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-faq .faq-inline-link a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .qa__body a {
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
}

/* 底部引导带 */
.page-faq .cta-band {
  display: grid;
  gap: 16px;
  margin-bottom: 56px;
  padding: 22px;
  border: 2px solid var(--line-moss);
  background: linear-gradient(135deg, var(--turf-deep) 0%, var(--panel-ink) 100%);
  box-shadow: var(--shadow-hard);
}

.page-faq .cta-band__text {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bone);
}

.page-faq .cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 平板及桌面 */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
    gap: 40px;
    padding-top: 18px;
  }

  .page-faq .faq-hero__actions {
    margin-top: 28px;
  }

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

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .step {
    grid-template-columns: 1fr;
    border-top: 2px solid var(--line-moss);
    padding-top: 16px;
    padding-bottom: 0;
  }

  .page-faq .step:first-child {
    border-top: 2px solid var(--line-moss);
  }

  .page-faq .version-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-faq .cta-band {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 26px 28px;
  }

  .page-faq .cta-band__text {
    font-size: 24px;
  }
}

@media (min-width: 900px) {
  .page-faq .filter-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
    gap: 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    padding-top: 44px;
    padding-bottom: 72px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list li {
    flex: 0 0 auto;
  }

  .page-faq .faq-toc__list a {
    width: 100%;
    padding: 10px 0;
    min-height: 0;
    border: 0;
    border-bottom: 1px solid var(--line-moss);
    background: transparent;
    font-size: 14px;
    white-space: normal;
    transition: color 180ms ease, padding-left 180ms ease;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    background: transparent;
    color: var(--signal);
    padding-left: 6px;
    transform: none;
  }

  .page-faq .faq-toc__list a::before {
    content: "";
    flex: 0 0 auto;
    width: 14px;
    height: 2px;
    background: var(--signal-dim);
  }

  .page-faq .faq-toc__list a:hover::before,
  .page-faq .faq-toc__list a:focus-visible::before {
    background: var(--signal);
  }

  .page-faq .faq-hero__title {
    font-size: clamp(38px, 4.6vw, 62px);
  }

  .page-faq .faq-section {
    padding-top: 34px;
    margin-bottom: 52px;
  }

  .page-faq .qa summary {
    font-size: 16px;
  }
}
<<<END>>>