.page-faq {
  --faq-rule: rgba(34, 29, 26, 0.18);
  --faq-rule-soft: rgba(34, 29, 26, 0.07);
  --faq-ink-mute: rgba(34, 29, 26, 0.66);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 40px;
  background: var(--paper-white);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-rule-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-rule-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 24px;
}

.page-faq .faq-hero__lead h1 {
  font-size: clamp(27px, 5.4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 800;
  margin: 12px 0 0;
  max-width: 20em;
}

.page-faq .faq-hero__lede {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-mute);
  margin: 18px 0 0;
  max-width: 34em;
}

.page-faq .faq-hero__stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--faq-rule);
  font-size: 13px;
  color: var(--faq-ink-mute);
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--grape);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__card {
  margin: 0;
  background: var(--paper);
  align-self: start;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 36px 0 56px;
}

.page-faq .faq-side__title {
  margin: 0 0 10px;
}

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

.page-faq .faq-side .toc-item {
  flex: 0 0 auto;
}

.page-faq .faq-side .toc-link {
  display: block;
  padding: 8px 12px;
  border: 1px solid var(--faq-rule);
  background: var(--paper-white);
  font-size: 13px;
  line-height: 1.4;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-side .toc-link:hover,
.page-faq .faq-side .toc-link:focus-visible {
  border-color: var(--gold);
  color: var(--grape);
}

.page-faq .faq-side .toc-link[data-current="true"] {
  background: var(--grape);
  border-color: var(--grape);
  color: var(--paper-white);
}

.page-faq .faq-side__hint {
  display: none;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-ink-mute);
  padding: 16px 0 0 12px;
  border-left: 1px solid var(--faq-rule);
  margin: 20px 0 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding: 0 0 44px;
  margin: 0 0 44px;
  border-bottom: 1px solid var(--faq-rule);
  scroll-margin-top: 96px;
}

.page-faq .faq-section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 8px;
}

.page-faq .faq-section__head h2 {
  font-size: clamp(21px, 3.4vw, 28px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
  max-width: 22em;
}

.page-faq .faq-section__intro {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-ink-mute);
  margin: 14px 0 0;
  max-width: 36em;
}

.page-faq .faq-section__tail {
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-ink-mute);
  margin: 26px 0 0;
  padding: 14px 0 0 14px;
  border-left: 2px solid var(--gold);
}

.page-faq .faq-section__tail a {
  color: var(--grape);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .faq-section__tail a:hover {
  color: var(--grape-soft);
  text-decoration-thickness: 2px;
  text-decoration-color: var(--gold);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
  border: 1px solid var(--faq-rule);
  background: var(--paper-white);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--fog);
}

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--faq-ink-mute);
  padding: 10px 12px;
  border-top: 1px solid var(--faq-rule);
}

/* ---------- 步骤折叠 ---------- */
.page-faq .faq-steps {
  margin: 28px 0 0;
  border-top: 1px solid var(--faq-rule);
}

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

.page-faq .faq-step > summary {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 22px;
  align-items: start;
  gap: 10px;
  padding: 16px 0 16px 14px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .faq-step > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--grape);
  transition: background-color var(--dur) var(--ease), width var(--dur) var(--ease);
}

.page-faq .faq-step:hover > summary,
.page-faq .faq-step > summary:focus-visible {
  background: var(--paper-white);
}

.page-faq .faq-step[open] > summary::before {
  width: 2px;
  background: var(--gold);
}

.page-faq .faq-step__no {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
  line-height: 1.5;
}

.page-faq .faq-step__label {
  font-size: 15.5px;
  line-height: 1.6;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-step__mark {
  position: relative;
  width: 22px;
  height: 22px;
  border: 1px solid var(--faq-rule);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.page-faq .faq-step__mark::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--grape);
}

.page-faq .faq-step[open] .faq-step__mark::before {
  content: "−";
  color: var(--gold);
}

.page-faq .faq-step__body {
  padding: 0 0 18px 56px;
}

.page-faq .faq-step__body p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-mute);
  margin: 0;
  max-width: 36em;
}

.page-faq .faq-step__body a {
  color: var(--grape);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 现象对照表 ---------- */
.page-faq .faq-table-wrap {
  margin: 26px 0 0;
  border: 1px solid var(--faq-rule);
  overflow-x: auto;
  background: var(--paper-white);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-table th {
  text-align: left;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--ink);
  background: var(--fog);
  padding: 12px 14px;
  border-bottom: 1px solid var(--faq-rule);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--faq-rule-soft);
  color: var(--ink);
  vertical-align: top;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(227, 225, 218, 0.42);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(201, 162, 74, 0.12);
}

.page-faq .faq-table td:last-child {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--grape);
  white-space: nowrap;
}

/* ---------- 检索说明 ---------- */
.page-faq .faq-search-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 26px 0 0;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-search-card {
  background: var(--paper-white);
  padding: 20px 18px;
}

.page-faq .faq-search-card h3 {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0 0 10px;
  color: var(--grape);
}

.page-faq .faq-search-card p {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink-mute);
  margin: 0;
}

.page-faq .faq-search-card--examples {
  background: var(--fog);
}

.page-faq .faq-query-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 12px;
  padding: 0;
}

.page-faq .faq-query {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--pine);
  background: var(--paper-white);
  border: 1px solid var(--ink);
  padding: 6px 10px;
  white-space: nowrap;
}

.page-faq .faq-search-card p.faq-search-card__note {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--faq-ink-mute);
}

/* ---------- 浏览器与设备 ---------- */
.page-faq .faq-device-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 26px 0 0;
}

.page-faq .faq-device-grid__figure {
  margin: 0;
  align-self: start;
}

.page-faq .faq-check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-check-list li {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-ink-mute);
  padding: 13px 0 13px 0;
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-check-list__key {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--paper-white);
  background: var(--pine);
  padding: 2px 8px;
  margin-right: 8px;
  vertical-align: 1px;
}

/* ---------- 咨询引导 ---------- */
.page-faq .faq-escape {
  background: var(--pine);
  color: var(--paper-white);
  padding: 44px 0 40px;
  scroll-margin-top: 96px;
}

.page-faq .faq-escape__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-escape__eyebrow {
  color: var(--gold);
}

.page-faq .faq-escape h2 {
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  color: var(--paper-white);
  max-width: 20em;
}

.page-faq .faq-escape__lead p {
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(255, 252, 245, 0.82);
  margin: 16px 0 0;
  max-width: 34em;
}

.page-faq .faq-escape__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

.page-faq .faq-report-list {
  list-style: none;
  counter-reset: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(255, 252, 245, 0.18);
  border: 1px solid rgba(255, 252, 245, 0.24);
}

.page-faq .faq-report-list li {
  background: var(--pine);
  padding: 16px 16px 16px 18px;
  position: relative;
}

.page-faq .faq-report-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--gold);
}

.page-faq .faq-report-list__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
  display: block;
  margin-bottom: 6px;
}

.page-faq .faq-report-list strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-white);
  line-height: 1.5;
}

.page-faq .faq-report-list p {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 252, 245, 0.76);
  margin: 6px 0 0;
}

.page-faq .faq-escape__contact {
  margin: 32px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid rgba(255, 252, 245, 0.24);
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(255, 252, 245, 0.88);
}

.page-faq .faq-escape__contact p {
  margin: 0;
}

.page-faq .faq-escape__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin-right: 10px;
}

/* ---------- 结尾提示 ---------- */
.page-faq .faq-foot-hint {
  margin: 34px 0 52px;
  padding: 18px 0 0;
  border-top: 1px solid var(--faq-rule);
  display: grid;
  gap: 8px;
}

.page-faq .faq-foot-hint p {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: 0.03em;
  color: var(--faq-ink-mute);
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-escape__contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px 24px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 28px 0 52px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 48px;
    align-items: end;
    margin-top: 32px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    padding: 52px 0 72px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-side .toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-side .toc-link {
    border: 0;
    border-left: 2px solid var(--faq-rule);
    background: transparent;
    padding: 7px 0 7px 12px;
    white-space: normal;
  }

  .page-faq .faq-side .toc-link[data-current="true"] {
    background: transparent;
    border-left-color: var(--grape);
    color: var(--grape);
    font-weight: 700;
  }

  .page-faq .faq-side__hint {
    display: block;
  }

  .page-faq .faq-section {
    padding-bottom: 56px;
    margin-bottom: 56px;
  }

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

  .page-faq .faq-device-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-escape {
    padding: 64px 0 56px;
  }

  .page-faq .faq-escape__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}
<<<END>>>