.page-faq {
  --faq-nav-w: 236px;
  --faq-pad: clamp(14px, 2.2vw, 20px);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(26px, 4.5vw, 52px);
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 84% 14%, rgba(53, 224, 208, 0.14), transparent 58%),
    radial-gradient(circle at 8% 88%, rgba(232, 178, 58, 0.10), transparent 55%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__text {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-title {
  margin: 0;
  font-size: clamp(28px, 7vw, 56px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--white);
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--white);
}

.page-faq .faq-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 6px 0 0;
  padding: 0;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 2px solid var(--line);
  background: rgba(17, 28, 46, 0.78);
  color: var(--white);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-jump a:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.page-faq .faq-jump .n {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-hero__figure {
  min-width: 0;
}

.page-faq .faq-figure {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard);
}

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

.page-faq .faq-figure .figure__caption {
  border-top: 2px solid var(--line);
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-faq .faq-body {
  padding: clamp(30px, 6vw, 72px) 0 clamp(36px, 7vw, 84px);
}

.page-faq .faq-body__inner {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
  align-items: start;
}

/* 左侧分组导航 */
.page-faq .faq-nav {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: var(--faq-pad);
  box-shadow: var(--hard);
  min-width: 0;
}

.page-faq .faq-nav__top {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-nav__label {
  flex: none;
  writing-mode: vertical-rl;
  height: 92px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.34em;
  color: var(--gold);
}

.page-faq .faq-nav__title {
  margin: 0;
  font-size: 14.5px;
  font-weight: 800;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-nav__link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 6px 10px;
  border-left: 2px solid transparent;
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-nav__link:hover {
  border-left-color: var(--gold);
  background: rgba(232, 178, 58, 0.08);
  color: var(--gold);
}

.page-faq .faq-nav__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-nav__foot {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--gray);
  word-break: break-word;
}

.page-faq .faq-nav__foot a {
  display: inline-block;
  margin-top: 6px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 2px solid rgba(232, 178, 58, 0.45);
}

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

/* 问答组 */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-group {
  margin: 0 0 clamp(26px, 4vw, 46px);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-group__num {
  flex: none;
  padding-bottom: 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__hint {
  margin-left: auto;
  padding-bottom: 4px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--gray);
  white-space: nowrap;
}

.page-faq .faq-group__media {
  margin-top: 18px;
}

.page-faq .faq-figure--sm {
  max-width: 520px;
}

/* 条目 */
.page-faq .faq-item {
  border: 2px solid var(--line);
  background: var(--panel);
  margin-bottom: 12px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.page-faq .faq-item[open] {
  border-color: var(--gold);
  box-shadow: 6px 6px 0 rgba(122, 90, 22, 0.45);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px;
  min-height: 44px;
  padding: 15px var(--faq-pad);
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 19px;
  line-height: 1.2;
  color: var(--gold);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .faq-item__mark {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--gold);
}

.page-faq .faq-a {
  padding: 0 var(--faq-pad) var(--faq-pad);
}

.page-faq .faq-a__inner {
  display: grid;
  gap: 10px;
  padding-top: 14px;
  border-top: 2px solid var(--line);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--white);
}

.page-faq .faq-a .k {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.02em;
}

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

.page-faq .faq-a a:hover {
  color: var(--cyan);
}

.page-faq .faq-a__note {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--gray);
}

/* 底部去向 */
.page-faq .faq-next {
  margin-top: clamp(8px, 2vw, 18px);
  border: 2px solid var(--line);
  background: linear-gradient(160deg, rgba(17, 28, 46, 0.96), rgba(10, 18, 32, 0.96));
  box-shadow: var(--hard);
  padding: clamp(18px, 3vw, 30px);
}

.page-faq .faq-next__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.8vw, 26px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--white);
}

.page-faq .faq-next__lead {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-next__list a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  align-content: start;
  min-height: 44px;
  padding: 12px 14px;
  border: 2px solid var(--line);
  background: rgba(10, 18, 32, 0.6);
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-next__list a:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-faq .faq-next__num {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-next__list strong {
  font-size: 15px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-next__list a span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.page-faq .faq-next__foot {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--gray);
  word-break: break-word;
}

.page-faq .faq-next__foot a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 2px solid rgba(232, 178, 58, 0.45);
}

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

@media (min-width: 700px) {
  .page-faq .faq-a__inner {
    grid-template-columns: minmax(0, 1fr) 84px;
    gap: 18px;
    align-items: start;
  }

  .page-faq .faq-a__note {
    text-align: right;
    padding-top: 4px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 46fr) minmax(0, 58fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-hero__figure {
    order: -1;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__inner {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: clamp(28px, 3.6vw, 52px);
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-nav__link,
  .page-faq .faq-item,
  .page-faq .faq-next__list a {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-next__list a:hover {
    transform: none;
  }
}