.page-faq {
  --faq-acc: var(--db-gold);
  --faq-gap: clamp(26px, 5vw, 52px);
  position: relative;
  background:
    radial-gradient(880px 420px at 10% -8%, rgba(63, 216, 206, 0.10), transparent 62%),
    radial-gradient(760px 360px at 94% 2%, rgba(233, 180, 76, 0.09), transparent 60%),
    var(--db-ink);
  color: var(--db-text);
  font-family: var(--db-font-body);
  padding-bottom: clamp(40px, 7vw, 88px);
  overflow-x: clip;
}

.page-faq .faq-shell {
  max-width: var(--db-max);
  margin: 0 auto;
  padding-inline: var(--db-pad);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 0 4px;
  font-family: var(--db-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--db-muted);
}
.page-faq .faq-crumbs a {
  color: var(--db-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.22s var(--db-ease), border-color 0.22s var(--db-ease);
}
.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--db-cyan);
  border-bottom-color: var(--db-cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
  padding: clamp(20px, 4vw, 38px) 0 clamp(26px, 5vw, 46px);
  border-bottom: 1px solid var(--db-line);
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--db-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--db-cyan);
}
.page-faq .faq-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--db-cyan);
  flex: none;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--db-font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--db-text);
  max-width: 16ch;
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 36ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--db-muted);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__figure {
  margin: 0;
  background: linear-gradient(150deg, var(--db-console), var(--db-ink) 70%);
  border: 1px solid var(--db-line);
  overflow: hidden;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.92;
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-index {
  margin-top: var(--faq-gap);
}
.page-faq .faq-index__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 22px;
}
.page-faq .faq-index__head h2 {
  margin: 0;
  font-family: var(--db-font-head);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 26px);
  letter-spacing: -0.01em;
  color: var(--db-text);
}
.page-faq .faq-index__head p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--db-muted);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--db-line);
}
.page-faq .faq-filter__btn {
  appearance: none;
  -webkit-appearance: none;
  padding: 9px 15px;
  border: 1px solid var(--db-line);
  border-radius: var(--db-radius);
  background: rgba(20, 38, 74, 0.35);
  color: var(--db-muted);
  font-family: var(--db-font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color 0.22s var(--db-ease), border-color 0.22s var(--db-ease), background-color 0.22s var(--db-ease);
}
.page-faq .faq-filter__btn:hover,
.page-faq .faq-filter__btn:focus-visible {
  color: var(--db-text);
  border-color: var(--db-cyan);
}
.page-faq .faq-filter__btn:focus-visible {
  outline: 2px solid var(--db-gold);
  outline-offset: 2px;
}
.page-faq .faq-filter__btn[data-filter-state="active"] {
  color: var(--db-ink);
  background: var(--db-gold);
  border-color: var(--db-gold);
  font-weight: 700;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: var(--faq-gap);
  scroll-margin-top: 90px;
}
.page-faq .faq-group--gold { --faq-acc: var(--db-gold); }
.page-faq .faq-group--cyan { --faq-acc: var(--db-cyan); }
.page-faq .faq-group--orange { --faq-acc: var(--db-orange); }
.page-faq .faq-group--indigo { --faq-acc: var(--db-cyan); }
.page-faq .faq-group--wine { --faq-acc: var(--db-gold); }

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--db-line);
}
.page-faq .faq-group__head::before {
  content: "";
  width: 3px;
  height: 20px;
  background: var(--faq-acc);
  flex: none;
}
.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--db-font-head);
  font-weight: 700;
  font-size: clamp(19px, 2.7vw, 23px);
  letter-spacing: -0.01em;
  color: var(--db-text);
}
.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-acc);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  border-bottom: 1px solid var(--db-line);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--db-line);
  transition: opacity 0.22s var(--db-ease);
}
.page-faq .faq-item:last-child {
  border-bottom: 0;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 4px 16px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.62;
  color: var(--db-text);
  transition: color 0.22s var(--db-ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:hover {
  color: var(--db-cyan);
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--db-gold);
  outline-offset: 3px;
}
.page-faq .faq-item__num {
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--db-muted);
  min-width: 22px;
}
.page-faq .faq-item__text {
  min-width: 0;
}
.page-faq .faq-item__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  flex: none;
  color: var(--db-muted);
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 0.22s var(--db-ease), background-color 0.22s var(--db-ease);
}
.page-faq .faq-item__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}
.page-faq .faq-item__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}
.page-faq .faq-item[open] .faq-item__mark {
  color: var(--db-gold);
}
.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateX(-50%) scaleY(0);
}
.page-faq .faq-item[open] .faq-item__num {
  color: var(--faq-acc);
}

.page-faq .faq-item__a {
  margin: 0 0 20px 34px;
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--faq-acc);
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--db-muted);
  animation: faq-reveal 0.26s var(--db-ease) both;
}
.page-faq .faq-item__a p {
  margin: 0;
}
.page-faq .faq-item__a a {
  color: var(--db-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 216, 206, 0.4);
  transition: color 0.22s var(--db-ease), border-color 0.22s var(--db-ease);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--db-gold);
  border-bottom-color: var(--db-gold);
}

@keyframes faq-reveal {
  from { opacity: 0; transform: translateX(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 反馈填写面板 ---------- */
.page-faq .faq-feedback {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin-top: 22px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--db-line);
  border-left: 3px solid var(--db-orange);
  background: linear-gradient(140deg, rgba(20, 38, 74, 0.72), rgba(7, 14, 28, 0.85));
}
.page-faq .faq-feedback__kicker {
  margin: 0;
  font-family: var(--db-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--db-orange);
}
.page-faq .faq-feedback h3 {
  margin: 10px 0 0;
  font-family: var(--db-font-head);
  font-weight: 700;
  font-size: clamp(18px, 2.5vw, 21px);
  letter-spacing: -0.01em;
  color: var(--db-text);
}
.page-faq .faq-feedback__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-faq .faq-feedback__list li {
  padding-left: 14px;
  border-left: 1px solid var(--db-line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--db-muted);
}
.page-faq .faq-feedback__list span {
  display: inline-block;
  margin-right: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--db-orange);
}
.page-faq .faq-feedback__figure {
  margin: 0;
  border: 1px solid var(--db-line);
  overflow: hidden;
}
.page-faq .faq-feedback__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 底部引导条 ---------- */
.page-faq .faq-more {
  position: sticky;
  bottom: 0;
  z-index: 5;
  margin-top: var(--faq-gap);
  border-top: 1px solid var(--db-line);
  background: rgba(12, 23, 48, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.page-faq .faq-more__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  max-width: var(--db-max);
  margin: 0 auto;
  padding: 14px var(--db-pad);
}
.page-faq .faq-more__text {
  flex: 1 1 260px;
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--db-muted);
}
.page-faq .faq-more__cta {
  flex: none;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
  .page-faq .faq-feedback {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: center;
  }
  .page-faq .faq-item__q {
    padding: 18px 6px 18px 2px;
    gap: 16px;
  }
  .page-faq .faq-item__a {
    margin-left: 38px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-item__num {
    min-width: 30px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__q,
  .page-faq .faq-filter__btn {
    transition: none;
  }
}