.page-faq {
  --faq-idx: 236px;
  --faq-gap: 36px;
  --faq-focus: rgba(232, 85, 45, 0.35);
  padding-bottom: 56px;
}

.page-faq .breadcrumb {
  margin: 18px 0 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin: 0 0 20px;
  padding: 26px 18px 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 48px),
    radial-gradient(120% 90% at 6% 0%, rgba(232, 85, 45, 0.22), transparent 62%),
    linear-gradient(168deg, var(--panel), var(--ink) 72%);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(27px, 8vw, 36px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--sand);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--sand);
}

.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 数字条 ---------- */
.page-faq .faq-facts {
  display: grid;
  gap: 10px;
  margin: 0 0 26px;
  grid-template-columns: 1fr;
}

.page-faq .faq-facts .data-block {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border-left: 3px solid var(--lava);
  background: rgba(18, 51, 41, 0.72);
}

.page-faq .faq-facts .data-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: 0.02em;
}

.page-faq .faq-facts .data-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--steel-soft);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: block;
}

.page-faq .faq-index {
  margin-bottom: 6px;
}

.page-faq .faq-index-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  white-space: nowrap;
  font-size: 13px;
  text-decoration: none;
  color: var(--steel-soft);
  background: rgba(18, 51, 41, 0.6);
  border: 1px solid var(--line);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index-link .n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--sand);
  border-color: var(--lava);
  background: rgba(31, 92, 70, 0.45);
}

/* ---------- 分组 ---------- */
.page-faq .qa-group {
  padding: 24px 0 10px;
  border-top: 1px solid var(--line);
}

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

.page-faq .grp-no {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  padding: 4px 6px;
  color: var(--lava);
  border: 1px solid var(--lava);
}

.page-faq .grp-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.02em;
  color: var(--sand);
}

.page-faq .grp-tag {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--steel);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa {
  position: relative;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa-q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 42px 15px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--sand);
  transition: color 0.18s ease, background 0.18s ease;
}

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

.page-faq .qa-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--lava);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.2s ease;
}

.page-faq .qa[open] > .qa-q {
  color: #ffffff;
  background: linear-gradient(90deg, rgba(232, 85, 45, 0.1), transparent 62%);
}

.page-faq .qa[open] > .qa-q::before {
  transform: scaleY(1);
}

.page-faq .qa-q:hover {
  color: #ffffff;
}

.page-faq .qa-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa-mark {
  position: absolute;
  right: 14px;
  top: 20px;
  width: 12px;
  height: 12px;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--amber);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .qa-mark::before {
  left: 0;
  right: 0;
  top: 5px;
  height: 2px;
}

.page-faq .qa-mark::after {
  top: 0;
  bottom: 0;
  left: 5px;
  width: 2px;
}

.page-faq .qa[open] .qa-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 18px 18px 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sand);
}

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

.page-faq .qa-a p + p {
  margin-top: 10px;
}

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

.page-faq .qa-inline:hover,
.page-faq .qa-inline:focus-visible {
  color: var(--lava);
}

.page-faq .hl {
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--ink);
  background: var(--amber);
}

/* ---------- 结论条 ---------- */
.page-faq .qa-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin: 18px 0 4px;
  padding: 14px 16px;
  color: var(--ink);
  background: var(--paper);
  border-left: 4px solid var(--lava);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .qa-note p {
  margin: 0;
  flex: 1 1 240px;
  font-size: 13.5px;
  line-height: 1.7;
}

.page-faq .qa-note-link {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--pitch);
  text-decoration: none;
  border-bottom: 2px solid var(--lava);
  padding-bottom: 2px;
}

.page-faq .qa-note-link:hover,
.page-faq .qa-note-link:focus-visible {
  color: var(--alert);
}

/* ---------- 图片 ---------- */
.page-faq .fig {
  position: relative;
  margin: 4px 0 20px;
}

.page-faq .fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .fig::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 31, 23, 0.12), rgba(11, 31, 23, 0.55));
}

.page-faq .fig .media-caption {
  position: relative;
  z-index: 1;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--steel-soft);
}

/* ---------- 联系分组 ---------- */
.page-faq .qa-group--contact {
  margin-top: 8px;
  padding: 24px 16px 18px;
  background: linear-gradient(160deg, var(--panel), rgba(11, 31, 23, 0.9));
  border-top: 2px solid var(--amber);
}

.page-faq .qa-group--contact .qa {
  border-color: var(--line);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-facts .data-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 14px 16px;
  }

  .page-faq .faq-hero {
    padding: 34px 28px 40px;
  }

  .page-faq .qa-q {
    font-size: 16px;
    padding: 17px 44px 17px 18px;
  }

  .page-faq .qa-a {
    padding: 0 26px 20px 18px;
    font-size: 15px;
  }
}

/* ---------- 桌面端：左侧索引 + 右侧问答 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 46px 48px 60px;
    border-bottom: 0;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
  }

  .page-faq .faq-hero h1 {
    font-size: clamp(36px, 3.6vw, 54px);
    max-width: 22ch;
  }

  .page-faq .faq-lead {
    font-size: 16px;
  }

  .page-faq .faq-body {
    display: grid;
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
    padding-top: 8px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
    margin-bottom: 0;
    padding: 14px 0;
    border-left: 1px solid var(--line);
  }

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

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    margin-bottom: 0;
    padding-bottom: 0;
  }

  .page-faq .faq-index-link {
    white-space: normal;
    padding: 11px 12px 11px 13px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    font-size: 13.5px;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    border-left-color: var(--lava);
    background: rgba(31, 92, 70, 0.32);
  }

  .page-faq .qa-group {
    padding: 30px 0 12px;
  }

  .page-faq .qa-group:first-child {
    padding-top: 12px;
  }

  .page-faq .grp-title {
    font-size: 26px;
  }

  .page-faq .qa-q {
    font-size: 16.5px;
  }

  .page-faq .qa-a {
    max-width: 68ch;
  }

  .page-faq .qa-note {
    padding: 16px 20px;
  }

  .page-faq .qa-group--contact {
    padding: 28px 24px 22px;
  }

  .page-faq .fig {
    margin: 6px 0 24px;
  }
}

@media (min-width: 1200px) {
  .page-faq .qa-a {
    padding-right: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-q,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after,
  .page-faq .qa-q::before,
  .page-faq .faq-index-link {
    transition: none;
  }
}
<<<END>>>