.page-faq {
  --faq-rail-w: 258px;
  --faq-anchor: 118px;
  position: relative;
  color: var(--white);
  padding-bottom: clamp(56px, 8vw, 112px);
  background:
    radial-gradient(760px 380px at 88% -6%, rgba(41, 240, 212, 0.13), transparent 68%),
    radial-gradient(620px 340px at 2% 10%, rgba(43, 27, 90, 0.55), transparent 72%),
    var(--ink-900);
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* 面包屑 */
.page-faq .breadcrumbs {
  padding-top: clamp(20px, 3vw, 32px);
}

.page-faq .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .breadcrumbs__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(147, 168, 196, 0.45);
}

.page-faq .breadcrumbs__list a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-faq .breadcrumbs__list a:hover {
  color: var(--cyan);
}

/* 头部 */
.page-faq .faq-head {
  max-width: 940px;
  padding: clamp(24px, 3.6vw, 42px) 0 clamp(26px, 3.6vw, 38px);
}

.page-faq .faq-head .kicker {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-head .display {
  margin: 12px 0 0;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-head .lede {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

/* 状态条 */
.page-faq .faq-status {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 32px);
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-faq .faq-status__cell {
  padding: 14px 18px;
  background: rgba(11, 30, 58, 0.78);
}

.page-faq .faq-status__k {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-status__v {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.3vw, 16px);
  font-variant-numeric: tabular-nums;
  color: var(--white);
}

.page-faq .faq-status__cell--accent .faq-status__v {
  color: var(--cyan);
}

/* 主体两栏 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 54px);
  padding-top: clamp(26px, 3.6vw, 44px);
}

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

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__item {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: rgba(11, 30, 58, 0.62);
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-rail__idx {
  font-size: 11.5px;
  color: var(--cyan);
}

.page-faq .faq-rail__link:hover {
  color: var(--white);
  border-color: var(--line-cyan);
  background: rgba(41, 240, 212, 0.08);
}

.page-faq .faq-rail__help {
  margin-top: 20px;
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(158deg, rgba(14, 53, 64, 0.86), rgba(11, 30, 58, 0.68));
}

.page-faq .faq-rail__help-text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-copy {
  width: 100%;
  margin-top: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--r-s);
  background: rgba(41, 240, 212, 0.09);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  word-break: break-all;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-copy:hover {
  background: rgba(41, 240, 212, 0.18);
  color: var(--white);
}

/* 内容流 */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor);
  padding-bottom: clamp(20px, 3vw, 32px);
  margin-bottom: clamp(24px, 3.6vw, 40px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
  border-bottom: none;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
  padding-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-group__idx {
  font-size: clamp(19px, 2.2vw, 25px);
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 2.1vw, 26px);
  line-height: 1.32;
  color: var(--white);
  transition: color 0.3s var(--ease);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-group:target .faq-group__title {
  color: var(--cyan);
}

/* 图 */
.page-faq .faq-figure {
  margin: 18px 0 6px;
  border-radius: var(--r-m);
  overflow: hidden;
}

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

.page-faq .faq-figure--square {
  max-width: 520px;
}

/* 手风琴 */
.page-faq .faq-list {
  margin-top: clamp(12px, 1.8vw, 18px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.35vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.3;
  color: var(--cyan);
}

.page-faq .faq-q[open] > summary::after {
  content: "−";
}

.page-faq .faq-q > summary:hover,
.page-faq .faq-q > summary:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-q__a {
  max-width: 62ch;
  padding: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-q__a .mono {
  color: var(--cyan);
  font-size: 0.95em;
}

.page-faq .faq-q__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-q__a a:hover {
  color: var(--white);
  border-color: var(--white);
}

/* 人工支持 */
.page-faq .faq-support {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  max-width: 720px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-support__item {
  padding: 14px 16px;
  background: rgba(11, 30, 58, 0.8);
}

.page-faq .faq-support__k {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-support__v {
  display: block;
  font-size: 14px;
  line-height: 1.55;
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-support__note {
  max-width: 640px;
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-support__actions .btn {
  text-decoration: none;
}

.page-faq .faq-group--contact {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  background:
    linear-gradient(150deg, rgba(74, 18, 48, 0.55), rgba(11, 30, 58, 0.85) 62%),
    var(--ink-800);
}

/* 桌面端：左侧固定轴 + 右侧内容流 */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 112px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 3px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__item {
    flex: 1 1 auto;
  }

  .page-faq .faq-rail__link {
    width: 100%;
    padding: 10px 12px;
    border-color: transparent;
    background: transparent;
    font-size: 14px;
    justify-content: flex-start;
  }

  .page-faq .faq-status {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group {
    padding-left: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-copy,
  .page-faq .faq-q > summary,
  .page-faq .faq-group__title {
    transition: none;
  }
}
<<<END>>>