.page-faq {
  --faq-soft: #CFE0E4;
  --faq-radius: 2px;
}

/* 首屏 */
.page-faq .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-block: clamp(20px, 4vw, 40px) clamp(28px, 5vw, 56px);
  border-bottom: 3px solid var(--line);
}

.page-faq .faq-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 15em;
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-counts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px clamp(20px, 4vw, 40px);
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.page-faq .faq-count {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-count b {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  color: var(--pitch);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-count span {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

.page-faq .faq-hero-media {
  margin: 0;
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.05);
}

.page-faq .faq-hero-caption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mute);
  border-top: 2px solid var(--line);
}

/* 筛选条 */
.page-faq .filter-bar {
  margin-block: clamp(18px, 3vw, 28px) clamp(20px, 3vw, 32px);
}

/* 主布局 */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

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

/* 左侧坐标索引 */
.page-faq .faq-index {
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  border-radius: var(--faq-radius);
  padding: 18px 16px;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--live);
}

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

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 11px 6px;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: var(--panel-2);
  transform: translateX(3px);
}

.page-faq .faq-index-name {
  font-size: 14px;
  line-height: 1.4;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-faq .faq-dot--pitch { background: var(--pitch); }
.page-faq .faq-dot--signal { background: var(--signal); }
.page-faq .faq-dot--live { background: var(--live); }

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 2px solid var(--line);
  font-size: 11px;
  color: var(--mute);
}

/* 问题组 */
.page-faq .faq-group {
  margin-bottom: clamp(28px, 4vw, 44px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 6px;
  padding-top: 14px;
  margin-bottom: 16px;
  border-top: 3px solid var(--pitch);
}

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

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-media {
  margin: 0 0 18px;
  border: 2px solid var(--line);
  background: var(--panel);
}

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

.page-faq .faq-media-caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--mute);
  border-top: 2px solid var(--line);
}

/* 手风琴 */
.page-faq .qa {
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  margin-bottom: 12px;
  border-radius: var(--faq-radius);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-faq .qa:hover {
  border-color: var(--panel-2);
}

.page-faq .qa[open] {
  border-color: var(--signal);
  box-shadow: inset 6px 0 0 var(--signal), var(--shadow-soft);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 22px;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-q-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mute);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}

.page-faq .qa-q {
  font-size: clamp(15px, 1.7vw, 16.5px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .qa-toggle {
  position: relative;
  display: block;
  width: 22px;
  height: 22px;
  border: 2px solid var(--line);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .qa-toggle::before,
.page-faq .qa-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--paper);
  transform: translate(-50%, -50%);
}

.page-faq .qa-toggle::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa-toggle::after {
  width: 2px;
  height: 10px;
  transition: opacity 0.2s ease;
}

.page-faq .qa[open] .qa-toggle {
  background: var(--signal);
  border-color: var(--signal);
}

.page-faq .qa[open] .qa-toggle::before {
  background: var(--ink);
}

.page-faq .qa[open] .qa-toggle::after {
  opacity: 0;
}

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

.page-faq .qa-body p {
  margin: 0 0 10px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

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

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

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

.page-faq .ts {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--live);
  border-bottom: 1px solid var(--live);
  padding-bottom: 1px;
  font-variant-numeric: tabular-nums;
}

/* 联系区块 */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  margin-top: clamp(12px, 2vw, 20px);
  padding: clamp(20px, 4vw, 38px);
  border: 3px solid var(--line);
  background: linear-gradient(160deg, var(--panel-2) 0%, var(--panel) 72%);
  box-shadow: var(--shadow-hard);
  border-radius: var(--faq-radius);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-contact-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.15;
  color: var(--paper);
}

.page-faq .faq-contact-text {
  margin: 0 0 18px;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-contact-rows {
  display: grid;
  gap: 0;
}

.page-faq .faq-contact-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.page-faq .faq-contact-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mute);
  padding-top: 2px;
}

.page-faq .faq-contact-val {
  color: var(--paper);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-val a {
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--signal-soft);
}

.page-faq .faq-contact-val a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-faq .faq-contact-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-contact-next {
  padding-top: 18px;
  border-top: 2px solid var(--line);
}

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

.page-faq .faq-next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-next-list a {
  display: block;
  padding: 12px 14px;
  border: 2px solid var(--line);
  background: rgba(6, 20, 27, 0.5);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-next-list a:hover,
.page-faq .faq-next-list a:focus-visible {
  border-color: var(--signal);
  background: var(--panel);
  transform: translate(-2px, -2px);
}

/* 移动端优先，平板起分栏 */
@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-contact-next {
    padding-top: 0;
    padding-left: clamp(18px, 3vw, 32px);
    border-top: 0;
    border-left: 2px solid var(--line);
  }

  .page-faq .qa > summary {
    padding: 17px 20px;
    gap: 14px;
  }

  .page-faq .qa-body {
    padding: 0 20px 18px 56px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-group-head {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-layout {
    grid-template-columns: 288px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa-toggle,
  .page-faq .qa-toggle::after,
  .page-faq .faq-index-link,
  .page-faq .faq-next-list a {
    transition: none;
  }
}
<<<END>>>