.page-faq {
  --faq-band-a: var(--coral);
  --faq-band-b: var(--gold);
  --faq-card-bg: var(--pearl);
  --faq-card-line: rgba(28, 90, 128, 0.22);
  display: block;
  background: var(--mist);
  color: var(--ink);
  padding-bottom: 96px;
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 28px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}
.page-faq .breadcrumbs__link {
  color: var(--sea-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}
.page-faq .breadcrumbs__link:hover {
  color: var(--coral-700);
  border-bottom-color: var(--coral-700);
}
.page-faq .breadcrumbs__sep {
  color: var(--slate);
  opacity: 0.6;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 48px 0 56px;
}
.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: end;
}
.page-faq .faq-hero__text .eyebrow {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--coral-700);
  margin: 0;
}
.page-faq .faq-hero h1 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--sea-900);
}
.page-faq .faq-hero .section-lead {
  margin: 24px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}
.page-faq .faq-hero__figure {
  margin: 0;
}
.page-faq .faq-hero__figure .media-frame__img,
.page-faq .faq-group__aside .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}
.page-faq .faq-hero__figure .media-frame__img {
  aspect-ratio: 12 / 7;
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-hub {
  padding-top: 8px;
}
.page-faq .faq-hub__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  padding: 20px 0 26px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-hub__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .filter-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--sea-700);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  padding: 10px 15px;
  border-radius: 0;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}
.page-faq .filter-btn:hover {
  border-color: var(--coral);
  color: var(--coral-700);
}
.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--sea-900);
  outline-offset: 2px;
}
.page-faq .filter-btn.is-active,
.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--coral);
  border-color: var(--coral);
  color: #fff;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-list {
  padding-top: 56px;
}
.page-faq .faq-group {
  position: relative;
  padding-left: 20px;
}
.page-faq .faq-group + .faq-group {
  margin-top: 64px;
}
.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 4px;
  background: linear-gradient(180deg, var(--faq-band-a), var(--faq-band-b));
}
.page-faq .faq-group[data-tags="account"] {
  --faq-band-a: var(--sea-500);
  --faq-band-b: var(--teal);
}
.page-faq .faq-group[data-tags="sync"] {
  --faq-band-a: var(--teal-700);
  --faq-band-b: var(--teal);
}
.page-faq .faq-group[data-tags="rule"] {
  --faq-band-a: var(--coral-700);
  --faq-band-b: var(--gold);
}
.page-faq .faq-group[data-tags="download"] {
  --faq-band-a: var(--gold);
  --faq-band-b: var(--coral);
}
.page-faq .faq-group[data-tags="version"] {
  --faq-band-a: var(--teal);
  --faq-band-b: var(--sea-500);
}
.page-faq .faq-group[data-tags="contact"] {
  --faq-band-a: var(--coral);
  --faq-band-b: var(--gold);
}
.page-faq .faq-group.is-out {
  display: none;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding-bottom: 26px;
}
.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 40px;
  line-height: 0.9;
  color: var(--faq-band-a);
  letter-spacing: -0.02em;
}
.page-faq .faq-group__headtext {
  min-width: 0;
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 4vw, 26px);
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--sea-900);
}
.page-faq .faq-group__lead {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-group__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}
.page-faq .faq-group__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}
.page-faq .faq-group__aside {
  margin: 0;
}
.page-faq .faq-group__aside .media-frame__img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-card {
  border: 1px solid var(--faq-card-line);
  background: var(--faq-card-bg);
  border-radius: 0;
  transition: border-color 180ms ease, background-color 180ms ease;
}
.page-faq .faq-card:hover {
  border-color: var(--sea-500);
}
.page-faq .faq-card[open] {
  border-color: var(--coral);
  background: #fff;
}
.page-faq .faq-card__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-card__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-card__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--coral);
}
.page-faq .faq-card[open] .faq-card__q::after {
  content: "−";
}
.page-faq .faq-card__q:focus-visible {
  outline: 2px solid var(--sea-900);
  outline-offset: -2px;
}
.page-faq .faq-card__qt {
  flex: 1;
  margin: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.6;
  color: var(--sea-900);
}
.page-faq .faq-card__a {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}
.page-faq .faq-card__a p {
  margin: 0 0 10px;
}
.page-faq .faq-card__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-card__a a {
  color: var(--coral-700);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 65, 15, 0.4);
}
.page-faq .faq-card__a a:hover {
  border-bottom-color: var(--coral-700);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  counter-reset: faqstep;
}
.page-faq .faq-steps li {
  position: relative;
  padding-left: 38px;
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}
.page-faq .faq-steps li:first-child {
  margin-top: 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(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--coral-700);
}

/* ---------- 收尾分组 ---------- */
.page-faq .faq-group--help {
  padding: 32px 24px 34px;
  background: var(--sea-900);
}
.page-faq .faq-group--help::before {
  background: linear-gradient(180deg, var(--coral), var(--gold));
}
.page-faq .faq-group--help .faq-group__num {
  color: var(--gold);
}
.page-faq .faq-group--help .faq-group__title {
  color: #fff;
}
.page-faq .faq-group--help .faq-group__lead {
  color: rgba(232, 238, 242, 0.72);
}
.page-faq .faq-group--help .faq-steps--wide {
  max-width: 46em;
  margin-top: 0;
}
.page-faq .faq-group--help .faq-steps--wide li {
  color: var(--mist);
}
.page-faq .faq-group--help .faq-steps--wide li::before {
  color: var(--gold);
}
.page-faq .faq-group__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 18px;
  margin: 28px 0 0;
}
.page-faq .faq-group__cta .btn {
  text-decoration: none;
}
.page-faq .faq-group__ctahint {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(232, 238, 242, 0.66);
}

/* ---------- 页尾提示条 ---------- */
.page-faq .faq-note {
  padding: 56px 0 0;
}
.page-faq .faq-note__inner {
  border-top: 1px solid var(--line-soft);
  padding-top: 26px;
}
.page-faq .faq-note__text {
  margin: 0;
  max-width: 46em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}
.page-faq .faq-note__text a {
  color: var(--sea-500);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-note__text a:hover {
  color: var(--coral-700);
  border-bottom-color: var(--coral-700);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq {
    padding-bottom: 120px;
  }
  .page-faq .faq-hero {
    padding: 64px 0 72px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }
  .page-faq .faq-group {
    padding-left: 28px;
  }
  .page-faq .faq-group__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 18px;
  }
  .page-faq .faq-group__grid--single {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-faq .faq-group__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }
  .page-faq .faq-group--help {
    padding: 44px 40px 46px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-group {
    padding-left: 36px;
  }
  .page-faq .faq-group__num {
    font-size: 52px;
  }
  .page-faq .faq-group__head {
    gap: 24px;
    padding-bottom: 30px;
  }
  .page-faq .faq-card__q {
    padding: 20px 24px;
  }
  .page-faq .faq-card__a {
    padding: 0 24px 22px;
  }
  .page-faq .faq-hero__figure {
    transform: translateY(-8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .filter-btn,
  .page-faq .breadcrumbs__link {
    transition: none;
  }
  .page-faq .faq-hero__figure {
    transform: none;
  }
}