.page-faq {
  --faq-line: rgba(92, 117, 146, 0.34);
  --faq-line-soft: rgba(92, 117, 146, 0.18);
  --faq-pad: clamp(18px, 3.2vw, 34px);
  --faq-gap: clamp(24px, 4.5vw, 56px);
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, rgba(92, 117, 146, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(92, 117, 146, 0.09) 1px, transparent 1px);
  background-size: 96px 96px;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .breadcrumbs {
  padding: 18px 0 4px;
}

.page-faq .breadcrumbs__link {
  color: var(--teal-soft);
}

.page-faq .note a,
.page-faq .faq-item__a a,
.page-faq .faq-switch__body a,
.page-faq .faq-export__note a {
  color: var(--teal-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(18px, 3.5vw, 40px) 0 clamp(30px, 6vw, 72px);
}

.page-faq .faq-hero__wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: stretch;
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: calc(var(--faq-pad) + 16px) var(--faq-pad) var(--faq-pad);
  background: linear-gradient(155deg, rgba(16, 42, 76, 0.92), rgba(10, 23, 48, 0.55) 72%);
  overflow: hidden;
}

.page-faq .faq-hero__ticks {
  position: absolute;
  left: 14px;
  right: 14px;
  top: 9px;
  height: 9px;
  background-image: repeating-linear-gradient(to right, var(--faq-line) 0 1px, transparent 1px 16px);
}

.page-faq .faq-hero__frame .mono-label {
  color: var(--ochre);
}

.page-faq .faq-hero__frame h1 {
  margin: 14px 0 0;
  font-size: clamp(34px, 6.4vw, 68px);
  line-height: 1.12;
  letter-spacing: 0.06em;
  font-weight: 800;
}

.page-faq .faq-hero__frame .lede {
  margin-top: 18px;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.86);
}

.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* 设备概况板 */
.page-faq .faq-board {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: 22px 20px;
  background: rgba(23, 58, 94, 0.42);
}

.page-faq .faq-board .mono-label {
  color: var(--teal-soft);
}

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

.page-faq .faq-board__list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--faq-line-soft);
  font-size: 14px;
}

.page-faq .faq-board__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-board__k {
  color: rgba(242, 239, 230, 0.9);
}

.page-faq .faq-board__v {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal-soft);
  white-space: nowrap;
}

.page-faq .faq-board__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  border-top: 1px solid var(--faq-line);
  padding-top: 16px;
}

.page-faq .faq-board__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-board__cap {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  color: rgba(242, 239, 230, 0.7);
}

/* 区块标题 */
.page-faq .faq-section-head {
  max-width: 58ch;
  margin-bottom: clamp(22px, 3.5vw, 38px);
}

.page-faq .faq-section-head .mono-label {
  color: var(--ochre);
}

.page-faq .faq-section-head h2,
.page-faq .faq-switch__body h2,
.page-faq .faq-contact h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  letter-spacing: 0.04em;
  font-weight: 700;
}

.page-faq .faq-section-head .note {
  margin-top: 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.72);
}

/* 分类索引 + 手风琴 */
.page-faq .faq-topics__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

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

.page-faq .faq-side__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: rgba(242, 239, 230, 0.82);
  text-decoration: none;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius);
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--teal-soft);
  border-color: rgba(47, 182, 166, 0.55);
  background: rgba(47, 182, 166, 0.08);
}

.page-faq .faq-side__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 3.5vw, 38px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-figure .media__img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure .media__caption {
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(242, 239, 230, 0.66);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.05em;
  font-weight: 700;
}

.page-faq .faq-group__count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ochre);
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--radius);
  background: rgba(16, 42, 76, 0.55);
  transition: border-color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color 180ms ease;
}

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

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

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

.page-faq .faq-item__num {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
  padding-top: 4px;
}

.page-faq .faq-item__sign {
  flex: none;
  margin-left: auto;
  padding-top: 2px;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--teal);
}

.page-faq .faq-item__sign::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__sign::before {
  content: "–";
}

.page-faq .faq-item[open] {
  border-color: rgba(47, 182, 166, 0.42);
  background: rgba(23, 58, 94, 0.82);
}

.page-faq .faq-item__a {
  padding: 0 16px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.84);
}

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

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

/* 换设备路径 */
.page-faq .faq-switch {
  padding: clamp(34px, 6vw, 76px) 0;
  border-top: 1px solid var(--faq-line-soft);
  border-bottom: 1px solid var(--faq-line-soft);
  background: linear-gradient(180deg, rgba(16, 42, 76, 0.6), rgba(10, 23, 48, 0) 88%);
}

.page-faq .faq-switch__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-switch__body .mono-label {
  color: var(--ochre);
}

.page-faq .faq-switch__body > p {
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.82);
}

.page-faq .faq-steps {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-steps__item:last-child {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-steps__num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--gold);
  padding-top: 4px;
}

.page-faq .faq-steps__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing: 0.03em;
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-switch__body .note {
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.7);
}

.page-faq .faq-switch__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(23, 58, 94, 0.4);
}

.page-faq .faq-switch__figure .media__img {
  display: block;
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-faq .faq-switch__figure .media__caption {
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: rgba(242, 239, 230, 0.66);
  border-top: 1px solid var(--faq-line-soft);
}

/* 设备端适配 */
.page-faq .faq-adapt {
  padding: clamp(34px, 6vw, 72px) 0;
}

.page-faq .faq-devices {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-device {
  border: 1px solid var(--faq-line-soft);
  border-top: 2px solid var(--ochre);
  border-radius: var(--radius);
  padding: 18px;
  background: rgba(23, 58, 94, 0.38);
  transition: border-color 180ms ease, background-color 180ms ease;
}

.page-faq .faq-device:hover {
  border-color: rgba(122, 216, 203, 0.45);
  background: rgba(23, 58, 94, 0.6);
}

.page-faq .faq-device h3 {
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: 0.03em;
}

.page-faq .faq-device p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-device .tag {
  display: inline-block;
  margin-top: 14px;
}

/* 注册三步 */
.page-faq .faq-register {
  padding: clamp(34px, 6vw, 72px) 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-register__cards {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(22px, 3.5vw, 34px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-register__card {
  padding: clamp(20px, 3vw, 30px);
  background: rgba(16, 42, 76, 0.52);
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-register__card:last-child {
  border-bottom: 0;
}

.page-faq .faq-register__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-register__card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  letter-spacing: 0.03em;
}

.page-faq .faq-register__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 239, 230, 0.8);
}

/* 记录导出 */
.page-faq .faq-export {
  padding: clamp(34px, 6vw, 72px) 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-export__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

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

.page-faq .faq-export__item {
  border-left: 2px solid var(--teal);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 16px;
  background: rgba(23, 58, 94, 0.42);
}

.page-faq .faq-export__item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  color: var(--paper);
}

.page-faq .faq-export__item span {
  font-size: 14px;
  line-height: 1.78;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-export__note {
  border: 1px solid rgba(198, 138, 58, 0.5);
  border-radius: var(--radius);
  padding: 20px;
  background: rgba(198, 138, 58, 0.1);
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.88);
}

.page-faq .faq-export__note p {
  margin: 0;
}

.page-faq .faq-export__note p + p {
  margin-top: 12px;
}

.page-faq .faq-export__note strong {
  color: var(--gold);
  letter-spacing: 0.04em;
}

/* 联系支持前 */
.page-faq .faq-ask {
  padding: clamp(34px, 6vw, 76px) 0 0;
}

.page-faq .faq-ask__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-ask__list {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-faq .faq-ask__item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-ask__item:last-child {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-ask__label {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-ask__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  letter-spacing: 0.03em;
}

.page-faq .faq-ask__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.8);
}

.page-faq .faq-ask .note {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(242, 239, 230, 0.7);
}

.page-faq .faq-contact {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(160deg, rgba(23, 58, 94, 0.78), rgba(10, 23, 48, 0.72));
}

.page-faq .faq-contact .mono-label {
  color: var(--ochre);
}

.page-faq .faq-contact h2 {
  font-size: clamp(20px, 2.6vw, 26px);
}

.page-faq .faq-contact__rows {
  margin-top: 18px;
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--faq-line-soft);
  font-size: 14px;
}

.page-faq .faq-contact__row:first-child {
  border-top: 1px dashed var(--faq-line-soft);
}

.page-faq .faq-contact__label {
  font-size: 12.5px;
  color: rgba(242, 239, 230, 0.66);
}

.page-faq .faq-contact__value {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--teal-soft);
  word-break: break-all;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

/* 断点：手风琴正文缩进 */
@media (min-width: 480px) {
  .page-faq .faq-item__a {
    padding-left: 44px;
  }
}

@media (min-width: 680px) {
  .page-faq .faq-devices {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-register__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-register__card {
    border-bottom: 0;
    border-right: 1px solid var(--faq-line-soft);
  }

  .page-faq .faq-register__card:last-child {
    border-right: 0;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-export__layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-ask__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__wrap {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-switch__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-topics__layout {
    grid-template-columns: 224px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .faq-side__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 12px 0 12px 16px;
  }

  .page-faq .faq-side__link:hover,
  .page-faq .faq-side__link:focus-visible {
    background: rgba(47, 182, 166, 0.08);
    border-left-color: var(--teal);
  }
}

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