.page-faq {
  --faq-panel: var(--ink-900);
  --faq-dash: rgba(183, 198, 214, 0.28);
  background:
    radial-gradient(120% 55% at 10% 0%, rgba(111, 130, 153, 0.16), transparent 62%),
    radial-gradient(90% 45% at 100% 4%, rgba(36, 42, 92, 0.32), transparent 65%),
    var(--ink-950);
  color: var(--ivory);
  font-family: var(--font-sans);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq [id] {
  scroll-margin-top: 92px;
}

.page-faq .breadcrumbs {
  padding-block: clamp(16px, 2.4vw, 28px) 0;
}

/* ---------- 首屏 ---------- */
.faq-hero {
  padding-block: clamp(24px, 3.6vw, 44px) clamp(36px, 5vw, 68px);
  border-bottom: 1px solid var(--line);
}

.faq-hero__grid {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
}

.faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.faq-hero__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 28px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--mist);
}

.faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
}

.faq-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--aqua);
  font-variant-numeric: tabular-nums;
}

.faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  padding: 8px;
}

.faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.faq-hero__figure figcaption {
  padding: 10px 4px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

/* ---------- 布局：左侧目录 + 右侧内容 ---------- */
.faq-layout {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
  margin-top: clamp(32px, 4.4vw, 60px);
}

.faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.faq-index__list li {
  flex: 0 0 auto;
}

.faq-index__link {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: rgba(11, 42, 35, 0.5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.faq-index__link:hover {
  border-color: var(--line-lit);
  color: var(--aqua-soft);
}

.faq-index__link:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 3px;
}

/* ---------- 内容块 ---------- */
.faq-block {
  padding-bottom: clamp(28px, 4vw, 48px);
  margin-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.faq-block--last {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.faq-block__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 16px;
}

.faq-block__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--flare);
}

.faq-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.faq-block__lead {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.faq-block__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-faq a:hover {
  color: var(--aqua-soft);
}

/* ---------- 三步 ---------- */
.steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.step:hover {
  transform: translateY(-2px);
  border-color: var(--line-lit);
}

.step__index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--aqua);
}

.step h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.4;
}

.step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 两步路径图 ---------- */
.review-map {
  border: 1px solid var(--line);
  background: linear-gradient(155deg, var(--ink-900), var(--ink-950));
  padding: clamp(10px, 1.8vw, 20px);
}

.review-map__svg {
  display: block;
  width: 100%;
  height: auto;
}

.review-legend {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.review-legend li {
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

.review-legend .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--aqua);
  margin-right: 8px;
}

/* ---------- 工具清单 ---------- */
.tool-visual {
  margin: 0 0 16px;
  max-width: 760px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  padding: 6px;
}

.tool-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

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

.tool {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px 16px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.tool:hover {
  border-color: var(--line-lit);
}

.tool__icon {
  flex: none;
  color: var(--aqua);
  line-height: 0;
}

.page-faq .icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.tool h3 {
  margin: 0 0 5px;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
}

.tool p {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--mist);
}

/* ---------- 同步 ---------- */
.sync-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sync-list li {
  padding: 14px 16px;
  border-left: 2px solid var(--aqua);
  background: linear-gradient(90deg, rgba(47, 243, 208, 0.07), rgba(11, 42, 35, 0.35));
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.sync-list strong {
  color: var(--ivory);
  font-weight: 700;
}

/* ---------- 常见问题手风琴 ---------- */
.qa-list {
  border-top: 1px solid var(--line);
}

.qa {
  border-bottom: 1px solid var(--line);
}

.qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

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

.qa__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.qa__title {
  flex: 1;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ivory);
  transition: color var(--dur) var(--ease);
}

.qa__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--aqua);
}

.qa[open] .qa__q::after {
  content: "−";
}

.qa__q:hover .qa__title {
  color: var(--aqua-soft);
}

.qa__q:focus-visible {
  outline: 2px solid var(--aqua);
  outline-offset: 3px;
}

.qa__a {
  padding: 0 0 18px 34px;
}

.qa__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 反馈 ---------- */
.feedback {
  display: grid;
  gap: 20px;
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--flare);
  background: linear-gradient(150deg, rgba(74, 31, 44, 0.55), rgba(8, 32, 27, 0.92));
}

.feedback__copy p {
  margin: 0 0 14px;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.feedback__copy .btn {
  margin-top: 4px;
}

.feedback__rows {
  margin: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.feedback__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--faq-dash);
}

.feedback__row:first-child {
  padding-top: 0;
}

.feedback__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
  text-transform: uppercase;
}

.feedback__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ivory);
  word-break: break-word;
}

.feedback__row dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--aqua-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .review-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feedback__rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 24px;
  }
}

@media (min-width: 920px) {
  .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .qa__title {
    font-size: 16.5px;
  }

  .feedback {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(24px, 3.4vw, 48px);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .faq-index {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .faq-index__list li {
    display: block;
  }

  .faq-index__link {
    display: block;
    margin-left: -1px;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
    white-space: normal;
    font-size: 12.5px;
  }

  .faq-index__link:hover {
    border-left-color: var(--aqua);
    background: rgba(47, 243, 208, 0.05);
  }
}

@media (min-width: 1080px) {
  .tool-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .tool,
  .page-faq .qa__title,
  .page-faq .faq-index__link {
    transition: none;
  }

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