.page-faq {
  --faq-line: 2px;
  --faq-code-w: 46px;
  display: block;
}

.page-faq .faq-top {
  padding-top: clamp(16px, 2.4vw, 30px);
}

.page-faq .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: clamp(28px, 4vw, 56px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(20px, 3vw, 40px) 0 clamp(24px, 3.4vw, 46px);
  border-bottom: var(--faq-line) solid var(--line);
}

.page-faq .faq-hero__main .eyebrow {
  margin-bottom: 14px;
}

.page-faq .faq-hero__main .display {
  margin: 0 0 20px;
  line-height: 1.02;
  letter-spacing: 0.05em;
  max-width: 16ch;
}

.page-faq .faq-hero__main .lede {
  margin: 0;
  max-width: 46ch;
}

.page-faq .faq-hero__side {
  display: grid;
  gap: 12px;
  align-content: end;
}

.page-faq .tut-metric {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 16px;
  background: var(--panel);
  border-left: 3px solid var(--cyan);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}

.page-faq .tut-metric:nth-child(2) {
  border-left-color: var(--amber);
}

.page-faq .tut-metric:nth-child(3) {
  border-left-color: var(--mauve);
}

.page-faq .tut-metric__value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--white);
  flex: none;
}

.page-faq .tut-metric__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
}

/* ---------- 区块公用 ---------- */
.page-faq .section {
  padding: clamp(40px, 6vw, 88px) 0;
}

.page-faq .section__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: clamp(20px, 2.6vw, 34px);
  border-bottom: 1px solid var(--hair);
  margin-bottom: clamp(24px, 3vw, 44px);
}

.page-faq .section__head .eyebrow {
  margin: 0 0 8px;
}

.page-faq .section-title {
  margin: 0;
}

.page-faq .section-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mauve);
  max-width: 48ch;
}

.page-faq .body-text {
  color: var(--text);
}

.page-faq .faq-after-table {
  margin: clamp(20px, 2.6vw, 32px) 0 0;
  max-width: 62ch;
}

.page-faq .faq-after-query {
  margin: clamp(22px, 2.8vw, 34px) 0 0;
  max-width: 64ch;
}

/* ---------- 步骤条 ---------- */
.page-faq .step-flow {
  display: grid;
}

.page-faq .step-item {
  display: grid;
  grid-template-columns: var(--faq-code-w) minmax(0, 1fr);
  gap: clamp(12px, 1.6vw, 20px);
}

.page-faq .step-item__rail {
  position: relative;
  display: flex;
  justify-content: center;
}

.page-faq .step-item__rail::after {
  content: "";
  position: absolute;
  top: var(--faq-code-w);
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--line);
}

.page-faq .step-item:last-child .step-item__rail::after {
  display: none;
}

.page-faq .step-item__num {
  display: grid;
  place-items: center;
  width: var(--faq-code-w);
  height: var(--faq-code-w);
  flex: none;
  border: 2px solid var(--cyan);
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.page-faq .step-item:nth-child(even) .step-item__num {
  border-color: var(--amber);
  color: var(--amber);
}

.page-faq .step-item__body {
  padding-bottom: clamp(22px, 2.8vw, 38px);
}

.page-faq .step-item__title {
  margin: 8px 0 8px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .step-item__lead {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
  max-width: 54ch;
}

/* ---------- 折叠提示 ---------- */
.page-faq .fold {
  border-left: 2px solid var(--hair);
  padding-left: 14px;
}

.page-faq .fold__body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .fold[data-open="true"] .fold__body {
  max-height: 260px;
  opacity: 1;
}

.page-faq .fold__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mauve);
}

.page-faq .fold__toggle {
  display: inline-block;
  padding: 5px 10px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background var(--fast) var(--ease), border-color var(--fast) var(--ease),
    color var(--fast) var(--ease);
}

.page-faq .fold__toggle:hover,
.page-faq .fold__toggle:focus-visible {
  background: rgba(47, 224, 203, 0.12);
  border-color: var(--cyan);
  color: var(--white);
}

.page-faq .fold[data-open="true"] .fold__toggle {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 图像容器 ---------- */
.page-faq .media-frame {
  position: relative;
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media-frame__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--mauve);
}

.page-faq .media-frame--scan::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    rgba(47, 224, 203, 0.07) 0 1px,
    transparent 1px 5px
  );
}

.page-faq .faq-figure {
  margin-top: clamp(24px, 3.4vw, 44px);
}

/* ---------- 配置对照表 ---------- */
.page-faq .table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 2px solid var(--line);
  background: rgba(14, 23, 41, 0.6);
}

.page-faq .spec-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.page-faq .spec-table thead th {
  padding: 14px 18px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text);
  background: var(--step);
  border-bottom: 2px solid var(--line);
}

.page-faq .spec-table thead th.col-low {
  color: var(--amber);
}

.page-faq .spec-table thead th.col-rec {
  color: var(--cyan);
}

.page-faq .spec-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  padding: 15px 18px;
  text-align: left;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  background: #101B2E;
  border-bottom: 1px solid var(--hair);
  border-right: 1px solid var(--line);
  white-space: nowrap;
}

.page-faq .spec-table tbody td {
  padding: 15px 18px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: 0.03em;
  color: var(--text);
  border-bottom: 1px solid var(--hair);
  white-space: nowrap;
}

.page-faq .spec-table tbody tr:last-child th,
.page-faq .spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .spec-table tbody tr:hover th,
.page-faq .spec-table tbody tr:hover td {
  background: rgba(47, 224, 203, 0.08);
  color: var(--white);
}

/* ---------- 会员权益 ---------- */
.page-faq .member-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 52px);
}

.page-faq .tier-column {
  display: grid;
  gap: 12px;
}

.page-faq .tier {
  padding: 16px 18px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-left: 4px solid var(--mauve);
}

.page-faq .tier--accent {
  border-left-color: var(--amber);
  box-shadow: var(--shadow-sm);
}

.page-faq .tier__name {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-faq .tier__rights {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .tier--accent .tier__rights {
  color: var(--amber);
}

.page-faq .tier__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .benefit-flow .eyebrow {
  margin: 0 0 16px;
}

.page-faq .flow-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .flow-list__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
}

.page-faq .flow-list__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  border-top: 2px solid var(--cyan);
  padding-top: 6px;
}

.page-faq .flow-list--compact .flow-list__num {
  color: var(--amber);
  border-top-color: var(--amber);
}

.page-faq .flow-list__item p {
  margin: 0;
  padding-top: 4px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
  max-width: 52ch;
}

/* ---------- 换机恢复 ---------- */
.page-faq .restore-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 52px);
  align-items: start;
}

.page-faq .restore-figure {
  order: -1;
}

.page-faq .restore-body .flow-list {
  margin-bottom: 22px;
}

.page-faq .restore-body .body-text {
  margin: 0 0 14px;
  max-width: 56ch;
}

/* ---------- 检索技巧 ---------- */
.page-faq .query-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .query-card {
  padding: 18px;
  background: var(--panel);
  border: 2px solid var(--line);
  border-top: 4px solid var(--cyan);
}

.page-faq .query-card:nth-child(2) {
  border-top-color: var(--amber);
}

.page-faq .query-card:nth-child(3) {
  border-top-color: var(--mauve);
}

.page-faq .query-card__label {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mauve);
}

.page-faq .query-card__text {
  display: block;
  padding: 10px 12px;
  background: var(--ink);
  border: 1px dashed var(--line);
  color: var(--mist);
  font-size: 13.5px;
  letter-spacing: 0.03em;
  word-break: break-all;
  user-select: all;
}

/* ---------- 常见问答 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
  max-width: 78ch;
}

.page-faq .qa {
  border: 2px solid var(--line);
  background: rgba(14, 23, 41, 0.66);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  background: rgba(22, 35, 58, 0.72);
}

.page-faq .qa__q {
  position: relative;
  padding: 16px 52px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--white);
}

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

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -6px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(225deg);
  margin-top: -2px;
}

.page-faq .qa__q:hover {
  color: var(--mist);
}

.page-faq .qa__a {
  padding: 0 18px 18px;
  border-top: 1px solid var(--hair);
  margin-top: 2px;
}

.page-faq .qa__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  max-width: 60ch;
}

.page-faq .qa-foot {
  margin-top: clamp(24px, 3vw, 40px);
  padding-top: clamp(20px, 2.6vw, 32px);
  border-top: 1px solid var(--hair);
  display: grid;
  gap: 18px;
}

.page-faq .qa-foot .body-text {
  margin: 0;
  max-width: 60ch;
}

.page-faq .qa-foot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .section__head {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: clamp(24px, 4vw, 64px);
  }

  .page-faq .section-note {
    text-align: right;
    max-width: 34ch;
  }

  .page-faq .faq-hero__side {
    grid-auto-rows: min-content;
  }

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

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

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(28px, 4.5vw, 80px);
    align-items: end;
  }

  .page-faq .member-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: clamp(32px, 5vw, 84px);
  }

  .page-faq .restore-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    column-gap: clamp(32px, 5vw, 84px);
  }

  .page-faq .restore-figure {
    order: 0;
  }

  .page-faq .qa-list {
    max-width: 82ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold__body,
  .page-faq .fold__toggle,
  .page-faq .qa,
  .page-faq .qa__q::after {
    transition: none;
  }

  .page-faq .qa[open] .qa__q::after {
    transform: rotate(225deg);
  }
}
<<<END>>>