.page-faq {
  --faq-sticky: 104px;
  --faq-body-text: #BCC9D6;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(30px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .display {
  margin: clamp(14px, 2vw, 24px) 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  color: var(--faq-body-text);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.8;
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 52px);
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 130px;
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
}

.page-faq .faq-facts strong {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .faq-facts li:nth-child(2) strong {
  color: var(--flare);
}

.page-faq .faq-facts li:nth-child(3) strong {
  color: var(--text);
}

.page-faq .faq-facts span {
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  align-items: start;
  padding: clamp(30px, 4.5vw, 60px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-index {
  grid-column: span 3;
  position: sticky;
  top: var(--faq-sticky);
  align-self: start;
}

.page-faq .faq-body {
  grid-column: span 9;
  display: grid;
  gap: clamp(38px, 5.5vw, 78px);
  min-width: 0;
}

/* ---------- 索引 ---------- */
.page-faq .index-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .index-list li {
  border-bottom: 1px solid var(--line);
}

.page-faq .index-list a {
  position: relative;
  display: block;
  padding: 12px 6px 12px 20px;
  font-size: 0.94rem;
  line-height: 1.5;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .index-list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 1px;
  background: var(--stone);
  transition: width 0.2s ease, background 0.2s ease;
}

.page-faq .index-list a:hover,
.page-faq .index-list a:focus-visible {
  color: var(--cyan-bright);
  padding-left: 24px;
}

.page-faq .index-list a[aria-current="true"] {
  color: var(--cyan-bright);
}

.page-faq .index-list a[aria-current="true"]::before {
  width: 14px;
  background: var(--cyan);
}

.page-faq .index-note {
  margin: 18px 0 0;
  padding-left: 20px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--muted);
  border-left: 1px solid var(--clay);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-chapter {
  scroll-margin-top: calc(var(--faq-sticky) + 12px);
  min-width: 0;
}

.page-faq .chapter-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: clamp(12px, 2vw, 20px);
  padding-top: clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--line-strong);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .chapter-num {
  grid-row: span 2;
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--flare);
}

.page-faq .chapter-head h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.1vw, 2.35rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .chapter-sub {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问答折叠面板 ---------- */
.page-faq .qa {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  margin-bottom: 10px;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-faq .qa:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
}

.page-faq .qa > summary {
  position: relative;
  display: block;
  padding: 17px 56px 17px 20px;
  font-size: 1.01rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa > summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .qa[open] > summary::after {
  content: "\2212";
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--cyan-bright);
}

.page-faq .qa-body {
  padding: 0 20px 20px 20px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
}

.page-faq .qa-body p {
  margin: 14px 0 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--faq-body-text);
}

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

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

/* ---------- 图片与图注 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: clamp(22px, 3vw, 32px) 0 0;
  background: var(--ink-2);
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 42%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 224, 194, 0));
}

.page-faq .faq-figure--path {
  aspect-ratio: 1000 / 700;
}

.page-faq .faq-figure--pulse {
  aspect-ratio: 900 / 600;
  margin-top: 0;
}

.page-faq .media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 刷新章节的图文并排 ---------- */
.page-faq .faq-media-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 3vw, 28px);
  align-items: center;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-media-note {
  padding: clamp(16px, 2.5vw, 24px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--flare);
}

.page-faq .faq-media-note p {
  margin: 0 0 12px;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--faq-body-text);
}

.page-faq .faq-stamp {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--cyan) !important;
  margin-bottom: 14px !important;
}

/* ---------- 米白档案区 ---------- */
.page-faq .faq-light {
  --text: var(--ink);
  --muted: #5B6875;
  --panel: rgba(7, 26, 47, 0.045);
  --line: rgba(7, 26, 47, 0.16);
  --line-strong: rgba(7, 26, 47, 0.3);
  --cyan: #0F8C7A;
  --cyan-bright: #0A6153;
  --faq-body-text: #45525F;
  background: var(--bone);
  color: var(--ink);
  padding: clamp(24px, 4vw, 46px);
}

.page-faq .faq-light .chapter-head h2,
.page-faq .faq-light .qa > summary {
  color: var(--ink);
}

.page-faq .faq-light .qa > summary:hover,
.page-faq .faq-light .qa > summary:focus-visible {
  color: var(--cyan-bright);
}

.page-faq .faq-light .qa {
  background: #FFFFFF;
  border-color: rgba(7, 26, 47, 0.14);
}

.page-faq .faq-light .qa[open] {
  border-left-color: var(--cyan);
}

.page-faq .faq-light-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(7, 26, 47, 0.16);
  border: 1px solid rgba(7, 26, 47, 0.16);
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .light-card {
  background: var(--bone);
  padding: clamp(18px, 2.4vw, 24px);
}

.page-faq .light-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.06rem;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .light-card h3::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  margin-right: 9px;
  vertical-align: middle;
  background: var(--clay);
}

.page-faq .light-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: #4E5B68;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: clamp(22px, 3.6vw, 40px);
}

.page-faq .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
}

.page-faq .support-copy p {
  margin: 0 0 16px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .support-copy .note {
  margin: 0;
  padding-left: 16px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .support-channels {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-faq .support-channels .data-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .support-channels .data-row:last-of-type {
  border-bottom: 0;
}

.page-faq .support-channels .data-key {
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .support-channels .data-val {
  font-size: 0.92rem;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .support-channels .btn-row {
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-light-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-media-row {
    grid-template-columns: 1.15fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .support-grid {
    grid-template-columns: 1.05fr 1fr;
  }
}

@media (max-width: 1023px) {
  .page-faq {
    --faq-sticky: 84px;
  }

  .page-faq .faq-index,
  .page-faq .faq-body {
    grid-column: 1 / -1;
  }

  .page-faq .faq-index {
    position: static;
    margin-bottom: clamp(24px, 4vw, 36px);
  }

  .page-faq .index-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border-top: 0;
  }

  .page-faq .index-list li {
    border-bottom: 0;
  }

  .page-faq .index-list a {
    padding: 8px 14px;
    font-size: 0.86rem;
    border: 1px solid var(--line);
  }

  .page-faq .index-list a::before {
    display: none;
  }

  .page-faq .index-list a:hover,
  .page-faq .index-list a:focus-visible {
    padding-left: 14px;
    border-color: var(--line-strong);
  }

  .page-faq .index-list a[aria-current="true"] {
    border-color: var(--cyan);
  }

  .page-faq .index-note {
    padding-left: 14px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-hero .display {
    max-width: none;
  }

  .page-faq .faq-facts {
    gap: 16px;
  }

  .page-faq .faq-facts li {
    flex: 1 1 44%;
    min-width: 0;
  }

  .page-faq .qa > summary {
    padding: 15px 48px 15px 16px;
    font-size: 0.96rem;
  }

  .page-faq .qa > summary::after {
    right: 16px;
  }

  .page-faq .qa-body {
    padding: 0 16px 18px 16px;
  }

  .page-faq .faq-media-note {
    padding: 16px;
  }
}
<<<END>>>