.page-faq {
  --faq-accent: var(--jj-line);
  padding-bottom: 24px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding: 22px 0 0;
  font-size: 13px;
  font-family: var(--jj-mono);
  letter-spacing: .04em;
  color: var(--jj-cream-55);
}

.page-faq .breadcrumbs a {
  color: var(--jj-cream-72);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--jj-ease), border-color .25s var(--jj-ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--jj-cyan);
  border-bottom-color: var(--jj-cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 34px 0 60px;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(36px, 8.4vw, 74px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--jj-cream);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.78;
  color: var(--jj-cream-72);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--jj-radius);
  overflow: hidden;
  border: 1px solid var(--jj-rule);
  aspect-ratio: 14 / 9;
  background: var(--jj-moss);
}

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

/* ---------- 筛选区 ---------- */
.page-faq .faq-shell {
  margin-top: 30px;
}

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 6px;
}

.page-faq .faq-filter {
  font-family: var(--jj-mono);
  font-size: 13px;
  letter-spacing: .05em;
  padding: 9px 17px;
  border-radius: 999px;
  border: 1px solid var(--jj-rule-strong);
  background: rgba(42, 50, 47, .45);
  color: var(--jj-cream-72);
  cursor: pointer;
  transition: color .25s var(--jj-ease), border-color .25s var(--jj-ease), background-color .25s var(--jj-ease);
}

.page-faq .faq-filter:hover {
  color: var(--jj-cream);
  border-color: var(--jj-cream-55);
}

.page-faq .faq-filter.is-active {
  color: var(--jj-cyan);
  border-color: var(--jj-cyan);
  background: rgba(56, 242, 194, .12);
}

.page-faq .faq-filter--data.is-active {
  color: var(--jj-amber);
  border-color: var(--jj-amber);
  background: rgba(233, 169, 63, .13);
}

.page-faq .faq-filter--device.is-active {
  color: var(--jj-cream);
  border-color: rgba(243, 238, 228, .78);
  background: rgba(243, 238, 228, .12);
}

.page-faq .faq-filter--coop.is-active {
  color: var(--jj-clay);
  border-color: var(--jj-clay);
  background: rgba(196, 103, 74, .15);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  margin-top: 36px;
  display: grid;
  gap: 48px;
}

.page-faq .faq-group {
  --faq-accent: var(--jj-line);
  border-top: 1px solid var(--jj-rule);
  padding-top: 20px;
}

.page-faq .faq-group--entry { --faq-accent: var(--jj-cyan); }
.page-faq .faq-group--data { --faq-accent: var(--jj-amber); }
.page-faq .faq-group--device { --faq-accent: var(--jj-cream); }
.page-faq .faq-group--coop { --faq-accent: var(--jj-clay); }

.page-faq .faq-group[hidden] {
  display: none;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.page-faq .faq-group__title {
  position: relative;
  margin: 0;
  padding-left: 18px;
  font-family: var(--jj-serif);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--jj-cream);
}

.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--faq-accent);
}

.page-faq .faq-group__count {
  flex: 0 0 auto;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--jj-cream-55);
}

.page-faq .faq-group__media {
  margin: 0 0 20px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--jj-rule);
  aspect-ratio: 12 / 7;
  background: var(--jj-moss);
}

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

/* ---------- 问答卡片 ---------- */
.page-faq .faq-card {
  border: 1px solid var(--jj-rule);
  border-left: 3px solid var(--faq-accent);
  border-radius: 12px;
  background: rgba(29, 58, 48, .46);
  margin: 0 0 10px;
  transition: background-color .3s var(--jj-ease), border-color .3s var(--jj-ease);
}

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

.page-faq .faq-card:hover {
  border-color: var(--jj-rule-strong);
  border-left-color: var(--faq-accent);
}

.page-faq .faq-card__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--jj-cream-86);
}

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

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

.page-faq .faq-card__no {
  flex: 0 0 auto;
  min-width: 42px;
  padding-top: 3px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--faq-accent);
}

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

.page-faq .faq-card__mark {
  flex: 0 0 auto;
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--jj-rule-strong);
  border-radius: 50%;
  color: var(--jj-cream-72);
  transition: border-color .25s var(--jj-ease), color .25s var(--jj-ease);
}

.page-faq .faq-card__mark::before,
.page-faq .faq-card__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform .25s var(--jj-ease);
}

.page-faq .faq-card__mark::before {
  width: 9px;
  height: 1.5px;
}

.page-faq .faq-card__mark::after {
  width: 1.5px;
  height: 9px;
}

.page-faq .faq-card[open] {
  background: var(--jj-cream);
  border-color: rgba(243, 238, 228, .55);
  border-left-color: var(--faq-accent);
}

.page-faq .faq-card[open] .faq-card__summary {
  color: var(--jj-deep);
}

.page-faq .faq-card[open] .faq-card__no {
  color: var(--jj-deep);
  opacity: .58;
}

.page-faq .faq-card[open] .faq-card__mark {
  border-color: rgba(11, 35, 28, .35);
  color: var(--jj-deep);
}

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

.page-faq .faq-card__body {
  padding: 0 18px 20px;
  color: var(--jj-deep);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-card__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-card__body ol {
  margin: 8px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.page-faq .faq-card__body a {
  color: #0E5B45;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-card__body a:hover {
  color: var(--jj-clay);
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-help {
  padding-top: 8px;
}

.page-faq .faq-help__panel {
  display: grid;
  gap: 30px;
  padding: 30px 22px;
  border-radius: var(--jj-radius);
  border: 1px solid var(--jj-rule-strong);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(56, 242, 194, .10), transparent 58%),
    linear-gradient(160deg, rgba(29, 58, 48, .92), rgba(11, 35, 28, .96));
}

.page-faq .faq-help__lede {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--jj-cream-72);
}

.page-faq .faq-help__lede a {
  color: var(--jj-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 194, .45);
}

.page-faq .faq-help__lede a:hover {
  border-bottom-color: var(--jj-cyan);
}

.page-faq .faq-help__contact {
  padding: 24px 22px;
  border-radius: 16px;
  border: 1px solid var(--jj-rule);
  background: rgba(42, 50, 47, .55);
  backdrop-filter: blur(8px);
}

.page-faq .faq-help__contact .contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__contact .contact-list li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--jj-cream-86);
  word-break: break-word;
}

.page-faq .faq-help__contact .contact-list li + li {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--jj-rule);
}

.page-faq .faq-help__contact .contact-list .font-data {
  display: block;
  margin-bottom: 3px;
  font-size: 12.5px;
  letter-spacing: .09em;
  color: var(--jj-cream-55);
}

.page-faq .faq-help__contact .contact-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--jj-cream-55);
}

.page-faq .faq-help__contact .btn {
  margin-top: 20px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 48px 0 76px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
    gap: 60px;
  }

  .page-faq .faq-hero__copy {
    padding-bottom: 18px;
  }

  .page-faq .faq-hero__media {
    border-radius: 26px;
  }

  .page-faq .faq-card__summary {
    padding: 18px 22px;
    font-size: 17px;
  }

  .page-faq .faq-card__body {
    padding: 0 22px 22px 78px;
  }

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
    gap: 48px;
    padding: 46px 44px;
  }

  .page-faq .faq-help__contact {
    padding: 28px 26px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-stream {
    gap: 58px;
  }

  .page-faq .faq-group__media {
    max-width: 860px;
    margin-left: 0;
    margin-right: auto;
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-hero {
    padding: 24px 0 44px;
  }

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

  .page-faq .faq-card__summary {
    gap: 10px;
    padding: 14px;
    font-size: 15.5px;
  }

  .page-faq .faq-card__no {
    min-width: 36px;
    font-size: 11.5px;
  }

  .page-faq .faq-card__body {
    padding: 0 14px 18px;
    font-size: 15px;
  }

  .page-faq .faq-card__mark {
    width: 20px;
    height: 20px;
  }

  .page-faq .faq-help__panel {
    padding: 24px 16px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-card__mark,
  .page-faq .faq-card__mark::before,
  .page-faq .faq-card__mark::after,
  .page-faq .faq-filter {
    transition: none;
  }
}
<<<END>>>