.page-faq {
  --faq-line: rgba(58, 63, 68, 0.14);
  --faq-ink: rgba(58, 63, 68, 0.78);
  background: var(--paper);
  color: var(--rock);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq .wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 18px;
}

.page-faq .breadcrumb {
  padding-top: 18px;
  font-size: 12px;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--ink-mute);
}

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

.page-faq .breadcrumb a:hover {
  color: var(--orange);
}

.page-faq .breadcrumb li[aria-current] {
  color: var(--rock);
}

/* ---------- 首屏 ---------- */
.page-faq .kb-hero {
  padding-top: 26px;
  padding-bottom: 40px;
}

.page-faq .kb-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

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

.page-faq .kb-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 7.6vw, 56px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--rock);
}

.page-faq .kb-hero-lede {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink);
}

.page-faq .kb-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .kb-hero-panel {
  position: relative;
  padding: 22px 18px 16px;
  background: var(--stone);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper-lg);
}

.page-faq .kb-panel-label {
  position: absolute;
  top: -12px;
  left: 16px;
}

.page-faq .kb-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 12px;
  margin: 8px 0 0;
}

.page-faq .kb-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .kb-fact dt {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}

.page-faq .kb-fact dd {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--rock);
}

.page-faq .kb-fact dd.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

/* ---------- 四类索引 ---------- */
.page-faq .kb-index-head {
  margin-bottom: 24px;
}

.page-faq .kb-map {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .kb-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 16px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  text-decoration: none;
  color: var(--rock);
  transition: transform 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .kb-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--orange);
}

.page-faq .kb-cell--b::before { background: var(--moss); }
.page-faq .kb-cell--c::before { background: var(--blue); background: var(--blue); }
.page-faq .kb-cell--d::before { background: var(--clay); }

.page-faq .kb-cell:hover,
.page-faq .kb-cell:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-paper-lg);
}

.page-faq .kb-cell-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
}

.page-faq .kb-cell-title {
  font-size: 19px;
  font-weight: 500;
  line-height: 1.3;
}

.page-faq .kb-cell-text {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--faq-ink);
}

.page-faq .kb-cell-meta {
  margin-top: auto;
  align-self: flex-start;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--rock);
  background: var(--orange-soft);
}

.page-faq .kb-cell--b .kb-cell-meta { background: rgba(78, 107, 82, 0.16); }
.page-faq .kb-cell--c .kb-cell-meta { background: rgba(47, 107, 255, 0.14); }
.page-faq .kb-cell--d .kb-cell-meta { background: rgba(168, 85, 47, 0.14); }

.page-faq .kb-index-figure {
  margin: 26px 0 0;
}

.page-faq .kb-index-figure .figure-frame {
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper-lg);
  background: var(--silver);
  overflow: hidden;
}

.page-faq .figure-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .figure-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
}

/* ---------- 阅读区 ---------- */
.page-faq .kb-read {
  padding-top: 40px;
}

.page-faq .kb-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-faq .kb-rail {
  padding: 14px 16px;
  background: var(--stone);
  border: 1px solid var(--line);
}

.page-faq .kb-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
}

.page-faq .kb-rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .kb-rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  font-size: 13.5px;
  color: var(--faq-ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 160ms var(--ease), background 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .kb-rail-link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0.6;
}

.page-faq .kb-rail-link:hover {
  color: var(--rock);
  border-left-color: var(--line-strong);
}

.page-faq .kb-rail-link.is-active {
  color: var(--rock);
  background: var(--orange-soft);
  border-left-color: var(--orange);
}

.page-faq .kb-rail-top {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--clay);
  text-decoration: none;
}

.page-faq .kb-rail-top:hover {
  color: var(--orange);
}

.page-faq .kb-block {
  padding: 24px 0 8px;
  border-top: 2px solid var(--rock);
}

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

.page-faq .kb-block-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}

.page-faq .kb-block-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .kb-block h2 {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.page-faq .kb-block-count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--rock);
  transition: color 160ms var(--ease);
}

.page-faq .qa-q::-webkit-details-marker { display: none; }
.page-faq .qa-q::marker { content: ""; }

.page-faq .qa-q:hover { color: var(--clay); }

.page-faq .qa-num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}

.page-faq .qa-text {
  flex: 1 1 auto;
}

.page-faq .qa-chev {
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(-45deg);
  transition: transform 180ms var(--ease);
}

.page-faq .qa[open] .qa-chev {
  transform: rotate(45deg);
}

.page-faq .qa-a {
  margin-left: 4px;
  padding: 0 0 16px 14px;
  border-left: 2px solid var(--orange-soft);
}

.page-faq .qa-a p {
  margin: 0 0 10px;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-ink);
}

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

.page-faq .qa-a ol {
  margin: 0 0 10px;
  padding-left: 18px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-ink);
}

.page-faq .qa-a ol li { margin-bottom: 4px; }

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

.page-faq .qa-a a:hover { color: var(--orange); }

.page-faq .kb-adapt-figure {
  margin: 20px 0 22px;
  max-width: 640px;
}

.page-faq .kb-adapt-figure .figure-frame {
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-paper);
  background: var(--silver);
  overflow: hidden;
}

/* ---------- 底部求助 ---------- */
.page-faq .kb-help {
  margin-top: 40px;
  padding-top: 44px;
  padding-bottom: 48px;
}

.page-faq .kb-help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-faq .kb-help-label {
  display: inline-block;
  margin-bottom: 14px;
}

.page-faq .kb-help h2 {
  margin: 0 0 14px;
  font-size: clamp(22px, 5vw, 32px);
  font-weight: 300;
  line-height: 1.25;
  color: var(--silver);
}

.page-faq .kb-help-main p {
  margin: 0 0 20px;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(237, 241, 244, 0.74);
}

.page-faq .kb-help-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .kb-checklist {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(237, 241, 244, 0.18);
}

.page-faq .kb-checklist li {
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid rgba(237, 241, 244, 0.18);
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(237, 241, 244, 0.9);
  position: relative;
}

.page-faq .kb-checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 17px;
  width: 8px;
  height: 8px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-faq .kb-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .kb-contact-mail {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--silver);
  word-break: break-all;
}

.page-faq .kb-copy {
  padding: 7px 14px;
  font-size: 12.5px;
  font-family: var(--font-sans);
  color: var(--silver);
  background: transparent;
  border: 1px solid rgba(237, 241, 244, 0.42);
  cursor: pointer;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .kb-copy:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.page-faq .copy-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--moss);
}

.page-faq .kb-help-note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(237, 241, 244, 0.66);
}

.page-faq .kb-help-note a {
  color: var(--orange);
  text-decoration: none;
}

.page-faq .kb-help-note a:hover { text-decoration: underline; }

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .wrap { padding: 0 32px; }

  .page-faq .kb-hero-grid {
    grid-template-columns: 6fr 5fr;
    align-items: start;
    gap: 40px;
  }

  .page-faq .kb-map {
    grid-template-columns: 1.08fr 0.92fr;
    grid-auto-rows: minmax(112px, auto);
    gap: 14px;
  }

  .page-faq .kb-cell--a { grid-column: 1; grid-row: 1 / span 2; }
  .page-faq .kb-cell--b { grid-column: 2; grid-row: 1; }
  .page-faq .kb-cell--c { grid-column: 2; grid-row: 2; }
  .page-faq .kb-cell--d { grid-column: 1 / -1; grid-row: 3; }

  .page-faq .kb-cell--d .kb-cell-text { max-width: 42em; }

  .page-faq .kb-facts { grid-template-columns: 1fr 1fr; }

  .page-faq .kb-help-grid {
    grid-template-columns: 5fr 6fr;
    gap: 48px;
  }
}

@media (min-width: 1000px) {
  .page-faq .kb-hero { padding-top: 36px; padding-bottom: 54px; }

  .page-faq .kb-layout {
    grid-template-columns: 208px 1fr;
    gap: 52px;
    align-items: start;
  }

  .page-faq .kb-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    padding: 16px 14px;
  }

  .page-faq .kb-rail-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .kb-rail-link {
    padding: 9px 10px;
  }

  .page-faq .qb-hero-panel { max-width: none; }

  .page-faq .kb-block { padding: 32px 0 10px; }

  .page-faq .qa-q { font-size: 15.5px; padding: 16px 0; }

  .page-faq .qa-a { padding-left: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-cell,
  .page-faq .qa-chev,
  .page-faq .kb-copy,
  .page-faq .kb-rail-link {
    transition: none;
  }

  .page-faq .kb-cell:hover,
  .page-faq .kb-cell:focus-visible {
    transform: none;
  }
}
<<<END>>>