.page-faq {
  --faq-gap: 14px;
  --faq-soft: rgba(20, 42, 85, 0.55);
  background:
    radial-gradient(900px 420px at 92% -6%, rgba(108, 74, 182, 0.34), transparent 68%),
    radial-gradient(720px 380px at -10% 20%, rgba(0, 229, 255, 0.1), transparent 70%),
    var(--ink-0);
  color: var(--moon);
  font-family: var(--font-body);
  padding-bottom: 64px;
  overflow-x: hidden;
}

.page-faq h1,
.page-faq h2,
.page-faq .toc-title {
  font-family: var(--font-display);
  margin: 0;
}

/* 面包屑 */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--dust);
}

.page-faq .crumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 16px 0 24px;
}

.page-faq .faq-hero .kicker {
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 7vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  max-width: 18ch;
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  display: inline-block;
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 247, 255, 0.86);
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-faq .faq-hero-tags li {
  font-size: 12.5px;
  line-height: 1.4;
  padding: 6px 11px;
  color: var(--moon);
  border: 1px solid var(--ink-2);
  background: rgba(31, 58, 110, 0.5);
  border-radius: 2px;
}

/* 费用速查 */
.page-faq .faq-quick {
  margin-top: 8px;
  padding: 18px 16px 16px;
  border: 1px solid var(--ink-2);
  border-top: 2px solid var(--cyan);
  background: linear-gradient(158deg, rgba(20, 42, 85, 0.92), rgba(11, 27, 58, 0.75));
  border-radius: 3px;
}

.page-faq .quick-head h2 {
  font-size: clamp(20px, 4.4vw, 26px);
  font-weight: 700;
  line-height: 1.2;
}

.page-faq .quick-head p {
  margin: 8px 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dust);
  max-width: 60ch;
}

.page-faq .quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-faq .quick-card {
  position: relative;
  padding: 12px 12px 14px;
  background: var(--ink-0);
  border: 1px solid var(--ink-2);
  border-radius: 2px;
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--ink-2);
}

.page-faq .quick-card--cyan::before { background: var(--cyan); }
.page-faq .quick-card--purple::before { background: var(--nebula); }
.page-faq .quick-card--orange::before { background: var(--orange); }
.page-faq .quick-card--dust::before { background: var(--dust); }

.page-faq .quick-label {
  margin: 6px 0 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--moon);
}

.page-faq .quick-amount {
  margin: 0 0 8px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
  color: var(--cyan);
}

.page-faq .quick-card--orange .quick-amount { color: var(--orange); }
.page-faq .quick-card--dust .quick-amount { color: var(--moon); }

.page-faq .faq-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-faq .quick-unit {
  font-size: 12px;
  color: var(--dust);
  letter-spacing: 0.03em;
}

.page-faq .quick-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--dust);
}

.page-faq .quick-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--ink-2);
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(244, 247, 255, 0.8);
}

/* 图例 */
.page-faq .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 14px;
}

.page-faq .legend-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--dust);
}

.page-faq .legend-swatch {
  width: 12px;
  height: 12px;
  flex: none;
  border-radius: 1px;
}

.page-faq .legend-swatch--cyan { background: var(--cyan); }
.page-faq .legend-swatch--orange { background: var(--orange); }
.page-faq .legend-swatch--green { background: var(--green); }

/* 工作台布局 */
.page-faq .faq-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 28px;
}

/* 目录树 */
.page-faq .faq-toc {
  border: 1px solid var(--ink-2);
  background: var(--faq-soft);
  border-radius: 3px;
  padding: 14px 12px;
}

.page-faq .toc-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  margin: 0 0 12px;
  padding-left: 2px;
}

.page-faq .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2px;
}

.page-faq .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--dust);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms var(--ease), background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .toc-list a:hover,
.page-faq .toc-list a:focus-visible {
  color: var(--moon);
  background: var(--ink-0);
  border-left-color: var(--cyan);
  outline: none;
}

.page-faq .toc-list a:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-faq .toc-idx {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
  flex: none;
}

.page-faq .toc-help {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-2);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--dust);
}

.page-faq .toc-help p {
  margin: 0 0 4px;
  word-break: break-word;
}

.page-faq .toc-help p:first-child {
  color: var(--moon);
  font-weight: 700;
  font-size: 13px;
}

.page-faq .toc-help-line {
  font-family: var(--font-num);
  color: var(--moon);
  letter-spacing: 0.02em;
}

.page-faq .toc-help-note {
  font-size: 12px;
  color: var(--dust);
}

.page-faq .toc-help-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
}

.page-faq .toc-help-link:hover,
.page-faq .toc-help-link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 章节 */
.page-faq .faq-sec {
  border-top: 1px solid var(--ink-2);
  padding: 22px 0 6px;
  scroll-margin-top: 16px;
}

.page-faq .faq-sec:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 12px;
  margin-bottom: 14px;
}

.page-faq .sec-idx {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
  padding-top: 4px;
  letter-spacing: 0.04em;
}

.page-faq .sec-head h2 {
  font-size: clamp(20px, 4vw, 28px);
  font-weight: 700;
  line-height: 1.22;
}

.page-faq .sec-sub {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dust);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0 0 16px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--ink-2);
  border-radius: 2px;
  background: linear-gradient(140deg, var(--ink-1), var(--ink-0));
}

.page-faq .faq-figure figcaption {
  margin-top: 7px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--dust);
}

/* 折叠问答 */
.page-faq .qa {
  border: 1px solid var(--ink-2);
  background: var(--ink-1);
  border-radius: 2px;
  margin: 0 0 9px;
  transition: box-shadow 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .qa:hover {
  border-color: var(--ink-2);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.16);
}

.page-faq .qa[open] {
  box-shadow: inset 2px 0 0 var(--cyan);
  background: rgba(20, 42, 85, 0.92);
}

.page-faq .qa > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 13px 14px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--moon);
  transition: color 180ms var(--ease);
}

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

.page-faq .qa > summary::before {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  border-left: 6px solid var(--cyan);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 200ms var(--ease);
}

.page-faq .qa[open] > summary::before {
  transform: rotate(90deg);
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--cyan);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .qa-body {
  padding: 0 14px 14px 36px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 247, 255, 0.88);
}

.page-faq .qa-body p {
  margin: 0 0 9px;
}

.page-faq .qa-body p:last-child,
.page-faq .qa-body ol:last-child,
.page-faq .qa-body ul:last-child {
  margin-bottom: 0;
}

.page-faq .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.42);
}

.page-faq .inline-link:hover,
.page-faq .inline-link:focus-visible {
  border-bottom-color: var(--cyan);
  background: rgba(0, 229, 255, 0.09);
}

.page-faq .plain-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.page-faq .plain-list li {
  line-height: 1.7;
}

/* 步骤路径 */
.page-faq .steps {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-faq .steps li {
  position: relative;
  margin-left: 11px;
  padding: 0 0 16px 34px;
  border-left: 1px dashed var(--ink-2);
}

.page-faq .steps li:last-child {
  border-left-color: transparent;
  padding-bottom: 2px;
}

.page-faq .steps .step-num {
  position: absolute;
  left: -12px;
  top: 0;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  font-family: var(--font-num);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink-0);
  background: var(--cyan);
  border-radius: 50%;
}

.page-faq .step-title {
  margin: 0 0 3px;
  font-size: 14px;
  font-weight: 700;
  color: var(--moon);
  line-height: 1.5;
}

.page-faq .step-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--dust);
}

.page-faq .steps--compact {
  margin-bottom: 10px;
}

.page-faq .steps--compact .step-num {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--ink-2);
}

.page-faq .ver-code {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--cyan);
  padding: 1px 5px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.28);
  border-radius: 2px;
}

/* 版本章节双栏 */
.page-faq .version-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-figure--square {
  margin: 0;
}

/* 联系块 */
.page-faq .faq-help {
  margin-top: 16px;
  padding: 16px 15px;
  border: 1px solid var(--ink-2);
  border-left: 3px solid var(--orange);
  background: linear-gradient(120deg, rgba(108, 74, 182, 0.24), rgba(20, 42, 85, 0.7));
  border-radius: 2px;
}

.page-faq .faq-help p {
  margin: 0 0 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 247, 255, 0.88);
  word-break: break-word;
}

.page-faq .faq-help .help-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--moon);
  margin-bottom: 8px;
}

.page-faq .faq-help .help-note {
  font-size: 12.5px;
  color: var(--dust);
}

.page-faq .faq-help .help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 0;
}

/* 平板 */
@media (min-width: 640px) {
  .page-faq .faq-quick {
    padding: 20px 20px 18px;
  }

  .page-faq .quick-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-body {
    padding-left: 0;
  }

  .page-faq .faq-sec {
    padding-top: 24px;
    margin-bottom: 4px;
  }

  .page-faq .faq-figure {
    margin-bottom: 18px;
  }
}

/* 桌面工作台 */
@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 88px;
  }

  .page-faq .faq-hero {
    padding: 20px 0 28px;
  }

  .page-faq .faq-workbench {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 32px;
    margin-top: 34px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 18px;
    padding: 16px 14px;
  }

  .page-faq .toc-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-body {
    min-width: 0;
  }

  .page-faq .version-layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 20px;
    align-items: start;
  }

  .page-faq .qa > summary {
    font-size: 15px;
    padding: 14px 16px;
  }

  .page-faq .qa-body {
    padding: 0 16px 16px 39px;
  }
}

/* 大屏 */
@media (min-width: 1200px) {
  .page-faq .faq-workbench {
    grid-template-columns: minmax(0, 3.6fr) minmax(0, 8.4fr);
    gap: 40px;
  }

  .page-faq .faq-hero h1 {
    max-width: 22ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .qa,
  .page-faq .qa > summary::before,
  .page-faq .toc-list a {
    transition: none;
  }

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