.page-faq {
  --faq-line: rgba(143, 163, 191, 0.18);
  --faq-line-strong: rgba(143, 163, 191, 0.32);
  --faq-measure: 46rem;
  --faq-soft: rgba(244, 247, 251, 0.8);
  display: block;
  color: var(--snow);
  background: var(--ink-deep);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

/* ---------- 面包屑与首屏 ---------- */

.page-faq .breadcrumb {
  padding-top: calc(var(--header-h) + 26px);
  padding-bottom: 2px;
}

.page-faq .faq-hero {
  padding-top: clamp(12px, 2.4vw, 24px);
  padding-bottom: clamp(34px, 6vw, 56px);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-faq .faq-hero-rail .eyebrow {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(34px, 6.4vw, 56px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 42rem;
  font-size: var(--fs-5);
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--faq-line-strong);
  color: var(--snow);
  font-size: var(--fs-6);
  text-decoration: none;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-jump a .mono {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--gold);
  background-color: rgba(242, 183, 5, 0.1);
}

/* ---------- 规则索引 ---------- */

.page-faq .faq-index {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-faq .faq-cover {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-faq .faq-sec-head {
  max-width: 46rem;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-sec-head h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .faq-sec-head p {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-index-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: baseline;
  column-gap: 14px;
  row-gap: 6px;
  padding: 20px 22px 22px;
  background: var(--ink-night);
  color: inherit;
  text-decoration: none;
  transition: background-color 160ms var(--ease);
}

.page-faq .faq-index-num {
  grid-row: 1 / span 2;
  font-size: 26px;
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-faq .faq-index-title {
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.35;
  color: var(--snow);
  transition: color 160ms var(--ease);
}

.page-faq .faq-index-sub {
  font-size: var(--fs-6);
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-index-card:hover,
.page-faq .faq-index-card:focus-visible {
  background: #17355a;
}

.page-faq .faq-index-card:hover .faq-index-title,
.page-faq .faq-index-card:focus-visible .faq-index-title {
  color: var(--gold);
}

.page-faq .faq-band {
  margin: clamp(38px, 6vw, 66px) 0 clamp(18px, 3vw, 30px);
}

.page-faq .faq-band .mono b {
  color: var(--gold);
  font-weight: 600;
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  padding-top: clamp(42px, 7vw, 82px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2.4vw, 26px);
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 2px solid var(--faq-line-strong);
}

.page-faq .faq-group-num {
  flex: none;
  font-size: clamp(30px, 5vw, 40px);
  line-height: 0.9;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: rgba(143, 163, 191, 0.42);
}

.page-faq .faq-group-head h2 {
  margin: 0 0 8px;
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.25;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .faq-group-sub {
  margin: 0;
  font-size: var(--fs-6);
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-list {
  max-width: var(--faq-measure);
  margin-top: clamp(16px, 2.6vw, 26px);
}

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

.page-faq .faq-item summary {
  position: relative;
  display: block;
  padding: 17px 40px 17px 0;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-5);
  font-weight: 600;
  line-height: 1.65;
  color: var(--snow);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 30px;
  width: 12px;
  height: 2px;
  background: var(--gold);
  transition: transform 160ms var(--ease);
}

.page-faq .faq-item summary::before {
  content: "";
  position: absolute;
  right: 13px;
  top: 25px;
  width: 2px;
  height: 12px;
  background: var(--gold);
  transition: transform 160ms var(--ease), opacity 160ms var(--ease);
}

.page-faq .faq-item[open] summary::before {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--gold);
}

.page-faq .faq-answer {
  max-width: 42rem;
  margin-left: 2px;
  padding: 2px 0 22px 18px;
  border-left: 2px solid var(--gold-deep);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
  font-size: var(--fs-5);
  line-height: 1.8;
  color: var(--faq-soft);
}

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

.page-faq .faq-answer em {
  font-style: normal;
  color: var(--snow);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
}

.page-faq .faq-answer a {
  position: relative;
  color: var(--ice);
  text-decoration: none;
  padding-bottom: 1px;
}

.page-faq .faq-answer a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--ice);
  transition: width 200ms var(--ease);
}

.page-faq .faq-answer a:hover::after,
.page-faq .faq-answer a:focus-visible::after {
  width: 100%;
}

/* ---------- 底部求助 ---------- */

.page-faq .faq-next {
  margin-top: clamp(48px, 8vw, 96px);
  padding-top: clamp(34px, 5vw, 58px);
  border-top: 2px solid var(--faq-line-strong);
}

.page-faq .faq-next-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-faq .faq-next-copy .eyebrow {
  margin: 0;
  font-size: var(--fs-7);
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-next-copy h2 {
  margin: 10px 0 14px;
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.26;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .faq-next-copy > p {
  margin: 0;
  max-width: 40rem;
  font-size: var(--fs-5);
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-contact {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.page-faq .faq-contact > div {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-contact dt {
  font-size: var(--fs-6);
  color: var(--mist);
}

.page-faq .faq-contact dd {
  margin: 0;
  font-size: var(--fs-5);
  color: var(--snow);
  word-break: break-word;
}

.page-faq .faq-note {
  margin: 14px 0 0;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: var(--mist);
}

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

.page-faq .faq-next-figure {
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-contact > div {
    grid-template-columns: 7rem minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(230px, 4fr) 7fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
  .page-faq .faq-next-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-faq .faq-list {
    padding-left: clamp(0px, 3vw, 44px);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-faq .faq-contact > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .page-faq .faq-group-head {
    flex-direction: column;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
  }
}