.page-faq {
  --faq-line: #DCE3ED;
  --faq-card: #FFFFFF;
  --faq-ink-soft: #59657A;
  background: var(--bb-mist);
  color: var(--bb-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  padding-bottom: 64px;
  overflow-x: hidden;
}

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

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-faq__top {
  padding-top: 26px;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-narrow);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--faq-ink-soft);
  margin-bottom: 20px;
}

.page-faq .breadcrumb a {
  color: var(--bb-blue);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

.page-faq .breadcrumb__sep {
  color: var(--bb-silver);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-intro {
  position: relative;
  padding: 8px 0 32px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-intro::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 104px;
  height: 4px;
  background: linear-gradient(90deg, var(--bb-blue) 0 62%, var(--bb-amber) 62% 100%);
}

.page-faq .faq-intro .eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bb-blue);
}

.page-faq .faq-intro h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(27px, 6.2vw, 52px);
  line-height: 1.24;
  letter-spacing: -0.012em;
  margin: 0 0 16px;
  max-width: 22ch;
  color: var(--bb-ink);
}

.page-faq .faq-intro__lede {
  max-width: 38em;
  font-size: 16.5px;
  color: var(--faq-ink-soft);
  margin: 0 0 26px;
}

.page-faq .faq-intro__lede a {
  color: var(--bb-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 95, 255, 0.32);
}

.page-faq .faq-intro__lede a:hover {
  border-bottom-color: var(--bb-blue);
}

.page-faq .faq-stats {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
}

.page-faq .faq-stat {
  border-left: 3px solid var(--bb-blue);
  padding-left: 12px;
}

.page-faq .faq-stat__num {
  display: block;
  font-size: 30px;
  line-height: 1.1;
  font-weight: 600;
  color: var(--bb-navy);
  letter-spacing: -0.02em;
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-ink-soft);
}

/* ---------- 目录 ---------- */

.page-faq .anchor-index {
  margin-top: 28px;
  padding: 20px 16px;
  background: var(--bb-pale);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-faq .anchor-index__title {
  margin: 0 0 12px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bb-navy);
}

.page-faq .anchor-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .anchor-index a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  font-size: 15px;
  color: var(--bb-ink);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--dur) var(--ease),
    border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .anchor-index a:hover,
.page-faq .anchor-index a:focus-visible {
  background: #ffffff;
  border-left-color: var(--bb-blue);
  color: var(--bb-navy);
}

.page-faq .anchor-index .mono {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--bb-blue);
}

/* ---------- 区块通用 ---------- */

.page-faq .faq-sec {
  padding: 42px 0;
}

.page-faq .faq-sec--teal {
  background: var(--bb-teal);
  color: var(--bb-mist);
}

.page-faq .faq-sec--dark {
  background: var(--bb-black);
  color: var(--bb-mist);
}

.page-faq .faq-sec--schedule {
  background: var(--bb-pale);
}

.page-faq .sec-head {
  max-width: 44em;
  margin-bottom: 26px;
}

.page-faq .sec-head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bb-blue);
}

.page-faq .sec-head h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.3;
  letter-spacing: -0.006em;
  margin: 0 0 12px;
}

.page-faq .sec-head__lede {
  margin: 0;
  font-size: 15.5px;
  color: var(--faq-ink-soft);
}

.page-faq .faq-sec--teal .sec-head .eyebrow,
.page-faq .faq-sec--dark .sec-head .eyebrow {
  color: var(--bb-amber);
}

.page-faq .faq-sec--teal .sec-head__lede,
.page-faq .faq-sec--dark .sec-head__lede {
  color: rgba(244, 246, 249, 0.78);
}

.page-faq .img-frame__caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--faq-ink-soft);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-sec--teal .img-frame__caption,
.page-faq .faq-sec--dark .img-frame__caption {
  color: rgba(244, 246, 249, 0.72);
  border-top-color: rgba(201, 210, 220, 0.24);
}

/* ---------- 流程 ---------- */

.page-faq .flow-figure {
  margin: 0 0 28px;
  background: #ffffff;
  border: 1px solid var(--faq-line);
}

.page-faq .flow-figure img {
  width: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

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

.page-faq .step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px 14px;
  padding: 20px 18px;
  background: var(--faq-card);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  transition: transform var(--dur) var(--ease);
}

.page-faq .step:hover {
  transform: translateY(-2px);
}

.page-faq .step__num {
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--bb-blue);
  padding-top: 4px;
}

.page-faq .step__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bb-navy);
  line-height: 1.4;
}

.page-faq .step__body p {
  margin: 0;
  font-size: 15.5px;
  color: var(--faq-ink-soft);
}

.page-faq .step__body p a {
  color: var(--bb-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 95, 255, 0.3);
}

.page-faq .step__body p a:hover {
  border-bottom-color: var(--bb-blue);
}

/* ---------- 折叠块 ---------- */

.page-faq .collapse {
  margin-top: 14px;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .collapse__head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--bb-blue);
}

.page-faq .collapse__icon {
  flex: none;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease);
}

.page-faq .collapse__head[aria-expanded="true"] .collapse__icon {
  transform: rotate(225deg) translate(-1px, -1px);
}

.page-faq .collapse__body[hidden] {
  display: none;
}

.page-faq .prep-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: grid;
  gap: 6px;
}

.page-faq .prep-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  background: var(--bb-blue);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

/* ---------- 勘测 ---------- */

.page-faq .survey {
  display: grid;
  gap: 26px;
}

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

.page-faq .survey-item {
  padding: 16px 0;
  border-top: 1px solid rgba(201, 210, 220, 0.26);
}

.page-faq .survey-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .survey-item h3 {
  margin: 0 0 6px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-narrow);
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
}

.page-faq .survey-item h3 .mono {
  flex: none;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--bb-amber);
}

.page-faq .survey-item p {
  margin: 0;
  font-size: 15px;
  color: rgba(244, 246, 249, 0.78);
}

.page-faq .survey__figure {
  margin: 0;
  border: 1px solid rgba(201, 210, 220, 0.34);
  background: rgba(18, 22, 28, 0.4);
}

.page-faq .survey__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 资质清单 ---------- */

.page-faq .audit {
  display: grid;
  gap: 24px;
}

.page-faq .audit-list {
  list-style: none;
  margin: 0;
  padding: 6px 18px 10px;
  background: #ffffff;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-faq .audit-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
}

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

.page-faq .audit-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 5px 0 0;
  accent-color: var(--bb-blue);
  cursor: pointer;
}

.page-faq .audit-item label {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--bb-ink);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .audit-item input:checked + label {
  color: var(--bb-silver);
  text-decoration: line-through;
}

.page-faq .audit-item label a {
  color: var(--bb-blue);
  text-decoration: none;
}

.page-faq .audit-item label a:hover {
  text-decoration: underline;
}

.page-faq .audit-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bb-navy);
  background: var(--bb-pale);
  vertical-align: 1px;
}

.page-faq .audit-aside {
  padding: 22px 20px;
  background: var(--bb-navy);
  color: rgba(244, 246, 249, 0.86);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .audit-aside__title {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #ffffff;
}

.page-faq .audit-aside p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .audit-aside .btn {
  display: inline-block;
}

/* ---------- 家电与电脑分册 ---------- */

.page-faq .diff {
  display: grid;
  gap: 18px;
}

.page-faq .diff-card {
  padding: 24px 20px;
  background: #1A2029;
  border-top: 4px solid var(--bb-blue);
}

.page-faq .diff-card--pc {
  border-top-color: var(--bb-amber);
}

.page-faq .diff-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: #ffffff;
}

.page-faq .diff-card__lede {
  margin: 0 0 16px;
  font-size: 14.5px;
  color: rgba(244, 246, 249, 0.72);
}

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

.page-faq .diff-list li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 246, 249, 0.88);
}

.page-faq .diff-list .mono {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--bb-amber);
  padding-top: 3px;
}

/* ---------- 排期刻度 ---------- */

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

.page-faq .tick {
  padding: 16px 16px 16px 18px;
  background: #ffffff;
  border-left: 4px solid var(--bb-silver);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .tick:hover {
  border-left-color: var(--bb-blue);
  transform: translateX(2px);
}

.page-faq .tick--now {
  border-left-color: var(--bb-amber);
}

.page-faq .tick--now:hover {
  border-left-color: var(--bb-amber);
}

.page-faq .tick__when {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--bb-blue);
}

.page-faq .tick--now .tick__when {
  color: #C25A11;
}

.page-faq .tick__what {
  display: block;
  margin-top: 3px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--bb-navy);
}

.page-faq .tick__note {
  display: block;
  margin-top: 3px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .schedule-foot {
  margin: 24px 0 0;
  font-size: 15px;
  color: var(--faq-ink-soft);
}

.page-faq .schedule-foot a {
  color: var(--bb-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 95, 255, 0.3);
}

.page-faq .schedule-foot a:hover {
  border-bottom-color: var(--bb-blue);
}

/* ---------- 常见问题 ---------- */

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-faq .filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--bb-silver);
  background: #ffffff;
  color: var(--bb-navy);
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .filter-btn:hover {
  border-color: var(--bb-blue);
  color: var(--bb-blue);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--bb-blue);
  border-color: var(--bb-blue);
  color: #ffffff;
}

.page-faq .qa-list {
  display: grid;
  gap: 14px;
}

.page-faq .qa {
  padding: 18px;
  background: #ffffff;
  border-left: 3px solid var(--bb-pale);
  transition: border-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-left-color: var(--bb-blue);
}

.page-faq .qa[hidden],
.page-faq .qa[data-visible="false"] {
  display: none;
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--bb-navy);
}

.page-faq .qa__q .mono {
  flex: none;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--bb-blue);
}

.page-faq .qa__a {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__a a {
  color: var(--bb-blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 95, 255, 0.3);
}

.page-faq .qa__a a:hover {
  border-bottom-color: var(--bb-blue);
}

/* ---------- 返回目录 ---------- */

.page-faq .back-to-index {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  padding: 10px 18px;
  background: var(--bb-navy);
  color: #ffffff;
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
    visibility var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .back-to-index.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.page-faq .back-to-index:hover {
  background: var(--bb-blue);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-sec {
    padding: 52px 0;
  }

  .page-faq .step {
    grid-template-columns: 60px 1fr;
    gap: 12px 20px;
    padding: 24px 24px;
  }

  .page-faq .step__num {
    font-size: 34px;
  }

  .page-faq .anchor-index {
    padding: 24px 22px;
  }

  .page-faq .anchor-index ol {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .step {
    grid-template-columns: 86px 1fr;
    gap: 14px 26px;
    padding: 28px 30px;
  }

  .page-faq .step__num {
    font-size: 46px;
    letter-spacing: -0.04em;
  }

  .page-faq .ticks {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .tick {
    padding: 18px 14px;
    border-left: 0;
    border-top: 4px solid var(--bb-silver);
  }

  .page-faq .tick:hover {
    border-left-color: transparent;
    border-top-color: var(--bb-blue);
    transform: translateY(-2px);
  }

  .page-faq .tick--now,
  .page-faq .tick--now:hover {
    border-top-color: var(--bb-amber);
  }

  .page-faq .diff {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-faq .survey {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .audit {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-faq .qa-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-intro h1 {
    max-width: 26ch;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-sec {
    padding: 64px 0;
  }

  .page-faq .faq-intro {
    padding-bottom: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .tick,
  .page-faq .back-to-index,
  .page-faq .anchor-index a,
  .page-faq .filter-btn,
  .page-faq .collapse__icon {
    transition: none;
  }

  .page-faq .step:hover,
  .page-faq .tick:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>