/* ===== 常见问答页 · page-faq ===== */

.page-faq {
  --faq-rail: 228px;
  --faq-gap: 56px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 44px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(30, 122, 75, .20), transparent 62%),
    linear-gradient(180deg, rgba(20, 36, 58, .92), rgba(11, 20, 32, 1));
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  align-items: center;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
  max-width: 20em;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: var(--step-4);
  line-height: 1.78;
  color: rgba(244, 241, 232, .82);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
}

.page-faq .faq-stat dt {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--hair);
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 24px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__fig {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  filter: saturate(.94) contrast(1.04);
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 44px 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-shell {
  padding-top: 34px;
  padding-bottom: 12px;
}

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

/* ---------- 分组目录 ---------- */
.page-faq .faq-toc {
  margin: 0 0 34px;
}

.page-faq .faq-toc__cap {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--green-hi);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 12px 10px 12px 12px;
  border-left: 2px solid transparent;
  color: var(--paper);
  text-decoration: none;
  font-size: var(--step-5);
  transition: background-color .18s ease-out, border-color .18s ease-out, color .18s ease-out;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: rgba(30, 122, 75, .16);
  border-left-color: var(--green-hi);
  color: #fff;
}

.page-faq .faq-toc__num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--green-hi);
}

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

.page-faq .faq-toc__count {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--hair);
  white-space: nowrap;
}

.page-faq .faq-toc__tip {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--hair);
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    display: grid;
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
    padding-top: 52px;
    padding-bottom: 26px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--strip-h) + 32px);
    margin-bottom: 0;
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--strip-h) + 24px);
  padding-bottom: 42px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0 14px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-family: var(--f-mono);
  font-size: var(--step-6);
  letter-spacing: .16em;
  color: var(--green-hi);
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  margin: 0;
  font-size: var(--step-3);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-group__count {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--hair);
  border: 1px solid var(--line);
  padding: 3px 9px;
  white-space: nowrap;
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-card {
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  background: rgba(20, 36, 58, .38);
  transition: border-left-color .18s ease-out, background-color .18s ease-out;
}

.page-faq .faq-card + .faq-card {
  border-top: 0;
}

.page-faq .faq-card[open] {
  border-left-color: var(--green);
  background: rgba(20, 36, 58, .72);
}

.page-faq .faq-card__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--step-4);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .faq-card__q:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

.page-faq .faq-card__mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-card__mark::before,
.page-faq .faq-card__mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
}

.page-faq .faq-card__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-card__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
  transition: transform .18s ease-out, opacity .18s ease-out;
}

.page-faq .faq-card[open] .faq-card__mark::before {
  background: var(--green-hi);
}

.page-faq .faq-card[open] .faq-card__mark::after {
  transform: rotate(90deg);
  opacity: 0;
}

.page-faq .faq-card__a {
  padding: 0 18px 20px;
  animation: faqAnswerIn .18s ease-out both;
}

.page-faq .faq-card__a p {
  margin: 0;
  max-width: 68ch;
  font-size: var(--step-4);
  line-height: 1.78;
  color: rgba(244, 241, 232, .8);
}

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

.page-faq .faq-key {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  color: var(--gold);
  font-weight: 600;
}

@keyframes faqAnswerIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 步骤序列 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 68ch;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: var(--step-5);
  line-height: 1.72;
  color: rgba(244, 241, 232, .8);
}

.page-faq .faq-steps__n {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-align: center;
  padding: 3px 0;
  color: var(--gold);
  border: 1px solid var(--line-strong);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-fig {
  margin: 22px 0 24px;
  display: grid;
  gap: 14px;
  align-items: center;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-faq .faq-fig figcaption {
  margin: 0;
  font-family: var(--f-mono);
  font-size: var(--step-6);
  line-height: 1.72;
  letter-spacing: .01em;
  color: var(--hair);
}

@media (min-width: 760px) {
  .page-faq .faq-fig {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 26px;
    margin: 24px 0 26px;
  }
}

/* ---------- 联系收束（暖纸区） ---------- */
.page-faq .faq-outro {
  margin-top: 26px;
  padding: 52px 0 60px;
  background: var(--paper);
  color: var(--ink-900);
  border-top: 3px solid var(--green);
}

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

.page-faq .faq-outro__num {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: var(--step-6);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .faq-outro__title {
  margin: 0 0 16px;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
  max-width: 20em;
}

.page-faq .faq-outro__lede {
  margin: 0 0 32px;
  max-width: 62ch;
  font-size: var(--step-4);
  line-height: 1.78;
  color: rgba(11, 20, 32, .78);
}

.page-faq .faq-routes {
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-route {
  padding: 16px 0 18px;
  border-top: 1px solid rgba(11, 20, 32, .18);
}

.page-faq .faq-route__tag {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--green);
}

.page-faq .faq-route__subj {
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: var(--step-5);
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink-900);
  word-break: break-word;
}

.page-faq .faq-route__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(11, 20, 32, .68);
}

@media (min-width: 760px) {
  .page-faq .faq-routes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-route {
    padding: 18px 20px 20px 0;
  }

  .page-faq .faq-route + .faq-route {
    padding-left: 20px;
    border-left: 1px solid rgba(11, 20, 32, .14);
  }
}

.page-faq .faq-contact {
  display: grid;
  gap: 16px;
  padding: 24px 0 0;
  border-top: 1px solid rgba(11, 20, 32, .18);
}

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

.page-faq .faq-contact__k {
  margin: 0 0 5px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(11, 20, 32, .55);
}

.page-faq .faq-contact__v {
  margin: 0;
  font-size: var(--step-5);
  line-height: 1.62;
  color: var(--ink-900);
  word-break: break-word;
}

@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

.page-faq .faq-contact__note {
  margin: 20px 0 26px;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(11, 20, 32, .64);
}

.page-faq .faq-outro .btn--gold {
  color: var(--ink-900);
}

/* ---------- 返回顶部 ---------- */
.page-faq .to-top {
  margin: 0;
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-card__mark::after,
  .page-faq .faq-toc__link {
    transition: none;
  }

  .page-faq .faq-card__a {
    animation: none;
  }
}