.page-faq {
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 面包屑留白 ---------- */
.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 26px);
}

/* ---------- 首屏：斜切色块 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4.5vw, 52px) 0 clamp(38px, 6.5vw, 82px);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(122deg, rgba(30, 107, 255, 0.20) 0%, rgba(30, 107, 255, 0) 54%),
    linear-gradient(298deg, rgba(34, 211, 238, 0.12) 0%, rgba(34, 211, 238, 0) 46%);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 0 94%);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
    gap: 54px;
    align-items: end;
  }
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(27px, 4.4vw, 48px);
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 58ch;
}

.page-faq .faq-hero__cta {
  margin-top: clamp(24px, 3vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 首屏右侧状态面板 */
.page-faq .faq-hero__meter {
  position: relative;
  padding-left: 22px;
  border-left: 1px solid var(--line-strong);
}

@media (min-width: 940px) {
  .page-faq .faq-hero__meter {
    padding-left: 34px;
  }
}

.page-faq .faq-hero__num {
  display: block;
  font-size: clamp(56px, 9.5vw, 104px);
  line-height: 0.84;
  letter-spacing: -0.045em;
  color: var(--paper);
  text-shadow: 0 0 38px rgba(30, 107, 255, 0.42);
}

.page-faq .faq-hero__unit {
  display: block;
  margin-top: 10px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--rock);
}

.page-faq .faq-hero__bars {
  display: flex;
  gap: 3px;
  margin-top: 24px;
  height: 4px;
}

.page-faq .faq-hero__bars span {
  display: block;
  height: 100%;
}

.page-faq .faq-hero__bars span:nth-child(1) { flex: 62; background: var(--blue); }
.page-faq .faq-hero__bars span:nth-child(2) { flex: 48; background: var(--cyan); }
.page-faq .faq-hero__bars span:nth-child(3) { flex: 54; background: var(--clay); }
.page-faq .faq-hero__bars span:nth-child(4) { flex: 46; background: var(--moss); }

.page-faq .faq-hero__legend {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .faq-hero__legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--rock);
}

/* ---------- 检索索引 ---------- */
.page-faq .faq-head__note {
  max-width: 34ch;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .faq-index {
  margin-top: clamp(26px, 3.6vw, 42px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 900px) {
  .page-faq .faq-index {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

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

@media (max-width: 580px) {
  .page-faq .faq-index__grid {
    grid-template-columns: 1fr;
  }
}

.page-faq .faq-tag {
  position: relative;
  display: block;
  padding: 20px 20px 24px;
  background: var(--ink-2);
  color: var(--paper);
  text-decoration: none;
  transition: background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  background: var(--ink-3);
  box-shadow: inset 0 0 0 1px var(--cyan), 0 0 30px -14px rgba(34, 211, 238, 0.75);
  outline: none;
}

.page-faq .faq-tag__num {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-tag__arrow {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 13px;
  color: var(--rock);
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-tag:hover .faq-tag__arrow,
.page-faq .faq-tag:focus-visible .faq-tag__arrow {
  color: var(--cyan);
  transform: translateX(3px);
}

.page-faq .faq-tag__name {
  display: block;
  margin-top: 30px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-faq .faq-tag__meta {
  display: block;
  margin-top: 9px;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--rock);
}

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

.page-faq .faq-index__cap {
  margin-top: 14px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--rock);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  margin-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item > summary {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 16px;
  align-items: baseline;
  padding: 20px 6px 20px 18px;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s var(--ease);
}

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

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line-strong);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-item > summary:hover {
  background: rgba(14, 22, 38, 0.55);
}

.page-faq .faq-item[open] > summary::before {
  background: var(--cyan);
  box-shadow: 0 0 18px -3px rgba(34, 211, 238, 0.9);
}

.page-faq .faq-item__code {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--rock);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__code {
  color: var(--cyan);
}

.page-faq .faq-item__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-item__caret {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 4px;
  align-self: start;
  flex: none;
}

.page-faq .faq-item__caret::before,
.page-faq .faq-item__caret::after {
  content: "";
  position: absolute;
  background: var(--rock);
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-item__caret::before {
  left: 0;
  top: 50%;
  width: 12px;
  height: 1px;
}

.page-faq .faq-item__caret::after {
  top: 0;
  left: 50%;
  width: 1px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-item__caret::after {
  transform: scaleY(0);
}

.page-faq .faq-item[open] .faq-item__caret::before {
  background: var(--cyan);
}

.page-faq .faq-item__body {
  padding: 0 clamp(0px, 6vw, 80px) 26px 18px;
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(242, 239, 233, 0.8);
}

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

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.4);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-item__body a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-item__steps {
  margin: 12px 0 14px;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 9px;
}

.page-faq .faq-item__steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(242, 239, 233, 0.86);
}

.page-faq .faq-item__steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 4px;
}

/* ---------- 历史版本资料区 ---------- */
.page-faq .faq-archive {
  margin-top: clamp(24px, 3vw, 36px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

@media (min-width: 1020px) {
  .page-faq .faq-archive {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-archive__fig {
    position: sticky;
    top: 84px;
  }
}

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

.page-faq .faq-archive__cap {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .faq-archive__cap .mono {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--clay);
  border: 1px solid rgba(194, 113, 75, 0.5);
  padding: 2px 7px;
}

.page-faq .faq-archive__list .faq-list {
  margin-top: 0;
}

/* ---------- 结尾客服引导带 ---------- */
.page-faq .faq-callout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: clamp(30px, 4.4vw, 52px) 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  position: relative;
}

.page-faq .faq-callout::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(72px, 12vw, 168px);
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

@media (min-width: 880px) {
  .page-faq .faq-callout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 52px;
    align-items: start;
  }
}

.page-faq .faq-callout__copy h2 {
  margin: 14px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.015em;
}

.page-faq .faq-callout__copy p {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(242, 239, 233, 0.78);
}

.page-faq .faq-callout__meta {
  color: var(--rock) !important;
  font-size: 13px !important;
}

.page-faq .faq-callout__actions {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-faq .faq-mail {
  display: grid;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--ink-2);
  border-left: 2px solid var(--blue);
}

.page-faq .faq-mail__k {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--rock);
}

.page-faq .faq-mail__v {
  font-size: clamp(14px, 2.4vw, 18px);
  letter-spacing: -0.01em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-mail .copy-btn {
  justify-self: start;
  margin-top: 4px;
}

.page-faq .faq-mail__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--rock);
}

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

/* 窄屏收口 */
@media (max-width: 480px) {
  .page-faq .faq-item > summary {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding-left: 14px;
  }

  .page-faq .faq-item__code {
    grid-column: 1 / -1;
    margin-bottom: 2px;
  }

  .page-faq .faq-item__body {
    padding-left: 14px;
  }

  .page-faq .faq-tag {
    padding: 18px 16px 20px;
  }

  .page-faq .faq-tag__name {
    margin-top: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .faq-tag__arrow,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::before,
  .page-faq .faq-item__caret::before,
  .page-faq .faq-item__caret::after {
    transition: none;
  }
}

页面已完成。主体 HTML 与专属 CSS 同步输出，作用域限定在 `.page-faq`，未触碰共享选择器。