.page-faq {
  display: block;
  padding-bottom: 56px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: var(--frame-w) solid var(--c-line);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(34, 224, 255, .18) 0%, rgba(34, 224, 255, 0) 58%),
    radial-gradient(90% 72% at 4% 100%, rgba(255, 122, 26, .14) 0%, rgba(255, 122, 26, 0) 62%),
    linear-gradient(180deg, var(--c-band) 0%, var(--c-ink-900) 74%);
  padding: 22px 0 30px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(27px, 6vw, 44px);
  line-height: 1.14;
  color: var(--c-white);
  letter-spacing: -.01em;
}

.page-faq .faq-hero__desc {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
}

.page-faq .faq-hero__meta {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-muted);
}

.page-faq .faq-hero__side {
  border: var(--frame-w) solid var(--c-line);
  background: rgba(12, 21, 48, .74);
  box-shadow: 4px 4px 0 rgba(3, 7, 18, .85);
  padding: 16px 16px 18px;
}

.page-faq .faq-hero__side-title {
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--c-white);
}

.page-faq .faq-chips {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__side-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 双栏主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding-top: 28px;
}

.page-faq .faq-index {
  border: var(--frame-w) solid var(--c-line);
  background: var(--c-ink-800);
  padding: 14px 12px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 3px solid transparent;
  color: var(--c-text);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background .16s ease, border-color .16s ease, color .16s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-white);
  background: var(--c-ink-700);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-muted);
  flex: 0 0 auto;
}

/* ---------- 答案分组 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-group {
  border: var(--frame-w) solid var(--c-line);
  border-left-width: 6px;
  background: var(--c-ink-800);
  box-shadow: 5px 5px 0 rgba(3, 7, 18, .85);
  margin-bottom: 24px;
  scroll-margin-top: 96px;
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group--cyan {
  --faq-accent: var(--c-cyan);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-group--orange {
  --faq-accent: var(--c-orange);
  border-left-color: var(--c-orange);
}

.page-faq .faq-group--mint {
  --faq-accent: var(--c-mint);
  border-left-color: var(--c-mint);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  background: var(--c-ink-700);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-group__id {
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--faq-accent, var(--c-cyan));
  flex: 0 0 auto;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(17px, 3.6vw, 21px);
  line-height: 1.3;
  color: var(--c-white);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-muted);
  flex: 0 0 auto;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  color: var(--c-white);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  transition: background .16s ease;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  background: var(--c-ink-700);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--faq-accent, var(--c-cyan));
}

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

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--faq-accent, var(--c-cyan));
  transition: transform .2s ease;
}

.page-faq .faq-item__icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 42px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-reveal .18s ease-out both;
}

@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__a a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-orange-soft);
}

/* 步骤列表 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0 0 10px;
  padding: 0;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 6px;
}

.page-faq .faq-steps li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--faq-accent, var(--c-cyan));
}

/* 组内配图 */
.page-faq .faq-group__media {
  padding: 2px 16px 16px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-group__media .media-frame {
  margin: 0;
}

/* 联系方式与操作 */
.page-faq .faq-contact {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-top: 1px solid var(--c-line);
  background: var(--c-ink-700);
}

.page-faq .faq-contact__key {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-muted);
}

.page-faq .faq-contact__val {
  display: block;
  font-size: 15px;
  line-height: 1.5;
  color: var(--c-white);
  word-break: break-word;
}

.page-faq .faq-group__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-hero__side {
    box-shadow: 3px 3px 0 rgba(3, 7, 18, .85);
  }

  .page-faq .faq-group {
    box-shadow: 3px 3px 0 rgba(3, 7, 18, .85);
  }

  .page-faq .faq-item__a {
    padding-left: 16px;
  }

  .page-faq .faq-index__link {
    padding: 11px 8px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 30px 0 40px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 40px;
    align-items: start;
    margin-top: 22px;
  }

  .page-faq .faq-body {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 32px;
    padding-top: 36px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

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

@media (min-width: 1180px) {
  .page-faq .faq-body {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 40px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__q,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}
<<<END>>>