.page-faq {
  --faq-index-w: 204px;
  --faq-text: rgba(230, 234, 230, .82);
  --faq-lime-soft: rgba(200, 240, 75, .12);
  --faq-gold-soft: rgba(233, 180, 76, .16);
  padding-bottom: 84px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 88px 0 40px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto -20%;
  height: 460px;
  background:
    radial-gradient(48% 90% at 18% 45%, rgba(200, 240, 75, .13), transparent 68%),
    radial-gradient(52% 88% at 84% 6%, rgba(15, 59, 51, .92), transparent 70%);
  pointer-events: none;
}

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

.page-faq .faq-hero-title {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-size: clamp(54px, 15vw, 124px);
  font-weight: 800;
  line-height: .88;
  letter-spacing: -.03em;
  color: var(--chalk);
}

.page-faq .faq-hero-lede {
  max-width: 46em;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-text);
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-hero-stat dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mute);
}

.page-faq .faq-hero-stat dd {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--lime);
}

/* 主体两栏 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

/* 主题索引 */
.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mute);
  text-transform: uppercase;
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-index-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index-link {
  display: block;
  padding: 9px 15px;
  white-space: nowrap;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--chalk);
  text-decoration: none;
  transition: border-color .22s ease, background-color .22s ease, color .22s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--line-lime);
  color: var(--lime);
}

/* 问题流 */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
  margin-bottom: 54px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 40px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .3s ease;
}

.page-faq .faq-group:target .faq-group-head {
  border-color: var(--line-lime);
}

.page-faq .faq-group-num {
  flex: none;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(24px, 6vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--chalk);
}

/* 问题条目 */
.page-faq .faq-item {
  position: relative;
  padding-left: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 3px;
  background: var(--lime);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .3s cubic-bezier(.2, .7, .3, 1);
}

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

.page-faq .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--chalk);
  transition: color .2s ease;
}

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

.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--lime);
}

.page-faq .faq-marker {
  position: relative;
  flex: none;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  transition: background-color .24s ease, border-color .24s ease;
}

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

.page-faq .faq-marker::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-marker::after {
  width: 1.5px;
  height: 12px;
  transition: transform .26s ease, opacity .26s ease;
}

.page-faq .faq-item[open] .faq-marker {
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-item[open] .faq-marker::before,
.page-faq .faq-item[open] .faq-marker::after {
  background: var(--pitch);
}

.page-faq .faq-item[open] .faq-marker::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-body {
  padding-bottom: 22px;
}

.page-faq .faq-a {
  max-width: 42em;
  margin: 0;
  font-size: 16px;
  line-height: 1.82;
  color: var(--faq-text);
}

.page-faq .faq-a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--line-lime);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--line-gold);
}

.page-faq .faq-key {
  display: inline-block;
  padding: 0 7px;
  font-family: var(--font-mono);
  font-size: .94em;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  background: var(--faq-gold-soft);
  border-radius: 6px;
}

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

.page-faq .faq-more a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-lime);
  border-radius: var(--r-pill);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--lime);
  text-decoration: none;
  transition: background-color .22s ease, color .22s ease, transform .22s ease;
}

.page-faq .faq-more a::after {
  content: "→";
  font-family: var(--font-mono);
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  background: var(--faq-lime-soft);
  transform: translateY(-1px);
}

/* 配图 */
.page-faq .faq-media {
  margin: 22px 0 26px;
}

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

.page-faq .faq-media .media-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mute);
}

.page-faq .faq-media--tilt {
  transform: rotate(-1.4deg);
  transform-origin: 50% 0;
}

/* 联系分组 */
.page-faq .faq-group--contact {
  padding: 26px 22px 28px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(15, 59, 51, .92), transparent 62%),
    var(--char);
}

.page-faq .faq-group--contact .faq-group-head {
  margin-bottom: 16px;
  border-bottom-color: var(--line);
}

.page-faq .faq-contact-lede {
  max-width: 40em;
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-text);
}

.page-faq .faq-contact-list {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  align-items: baseline;
  font-size: 15px;
  color: var(--chalk);
}

.page-faq .faq-contact-label {
  flex: none;
  min-width: 5em;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mute);
}

.page-faq .faq-contact-list a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--line-lime);
}

.page-faq .faq-contact-list a:hover,
.page-faq .faq-contact-list a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--line-gold);
}

.page-faq .faq-contact-note {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

/* 结束装饰 */
.page-faq .faq-scan {
  margin-top: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-scan-rail {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-scan-dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--lime);
  opacity: .7;
}

.page-faq .faq-scan-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 30%, var(--line-strong) 70%, transparent);
}

.page-faq .faq-scan-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-scan-tags li {
  padding: 5px 12px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-pill);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mute);
}

/* 中等屏幕 */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 100px 0 48px;
  }

  .page-faq .faq-a {
    font-size: 17px;
  }

  .page-faq .faq-q {
    font-size: 19px;
  }
}

/* 桌面：左索引右内容 */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 98px;
  }

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

  .page-faq .faq-index-link {
    white-space: normal;
    border-color: transparent;
    border-radius: var(--r-md);
    padding: 8px 12px;
    color: var(--mute);
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: var(--faq-lime-soft);
    border-color: var(--line-lime);
    color: var(--lime);
  }

  .page-faq .faq-group--contact {
    padding: 32px 30px 34px;
  }

  .page-faq .faq-scan-tags {
    gap: 10px;
  }
}

/* 大屏：正文宽度收敛，留出呼吸感 */
@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr) 92px;
  }

  .page-faq .faq-stream {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-marker,
  .page-faq .faq-marker::after,
  .page-faq .faq-more a,
  .page-faq .faq-index-link {
    transition: none;
  }

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