/* ==========================================================================
   常见问答 · page-faq
   ========================================================================== */

.page-faq {
  --faq-accent: var(--gold-lt);
  --faq-line: rgba(200, 162, 39, .3);
  --faq-fg: var(--paper);
  --faq-fg-soft: rgba(245, 242, 234, .74);

  display: block;
  position: relative;
  color: var(--paper);
  font-family: var(--font-sans);
  background:
    radial-gradient(1000px 560px at 86% -12%, rgba(58, 42, 107, .52), transparent 62%),
    radial-gradient(780px 460px at 2% 1%, rgba(14, 79, 74, .4), transparent 60%),
    var(--navy);
  -webkit-font-smoothing: antialiased;
}

.page-faq .faq-hero__inner,
.page-faq .faq-group__inner,
.page-faq .faq-filterbar__inner,
.page-faq .faq-cta__inner {
  width: 100%;
  max-width: var(--wide);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: calc(var(--head-h) + clamp(52px, 9vw, 104px)) clamp(46px, 6vw, 78px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 162, 39, .55), transparent);
}

.page-faq .faq-hero .kb-crumbs {
  margin: 0 0 clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--gold-lt);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  color: rgba(245, 242, 234, .76);
}

.page-faq .faq-hero__metrics {
  margin-top: clamp(30px, 4.4vw, 50px);
  padding-top: 24px;
  border-top: 1px solid rgba(200, 162, 39, .26);
}

.page-faq .faq-hero__metrics .kb-metric__value {
  color: var(--gold-lt);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 筛选条 ---------- */

.page-faq .faq-filterbar {
  position: sticky;
  top: var(--head-h);
  z-index: 6;
  background: rgba(11, 27, 51, .95);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(200, 162, 39, .2);
  border-bottom: 1px solid rgba(200, 162, 39, .2);
  padding-block: 13px;
}

.page-faq .faq-filterbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
}

.page-faq .faq-filterbar__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: rgba(245, 242, 234, .58);
}

.page-faq .faq-filterbar .kb-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .kb-filter__btn {
  font-family: inherit;
  font-size: 13px;
  line-height: 1;
  padding: 8px 15px;
  border: 1px solid rgba(200, 162, 39, .42);
  border-radius: 999px;
  background: transparent;
  color: rgba(245, 242, 234, .82);
  cursor: pointer;
  transition: background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .kb-filter__btn:hover {
  border-color: var(--gold-lt);
  color: var(--gold-lt);
}

.page-faq .kb-filter__btn[aria-pressed="true"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy);
  font-weight: 700;
}

/* ---------- 分组画板 ---------- */

.page-faq .faq-group {
  position: relative;
  padding-block: clamp(46px, 6.6vw, 86px);
}

.page-faq .faq-group.skin-navy {
  --faq-accent: var(--gold-lt);
  --faq-line: rgba(200, 162, 39, .3);
  --faq-fg: var(--paper);
  --faq-fg-soft: rgba(245, 242, 234, .74);
  background: var(--navy-2);
  color: var(--paper);
}

.page-faq .faq-group.skin-paper {
  --faq-accent: #8a6c10;
  --faq-line: rgba(26, 26, 31, .16);
  --faq-fg: var(--ink);
  --faq-fg-soft: rgba(26, 26, 31, .68);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-group.skin-indigo {
  --faq-accent: var(--gold-lt);
  --faq-line: rgba(231, 204, 106, .3);
  --faq-fg: var(--paper);
  --faq-fg-soft: rgba(245, 242, 234, .76);
  background: var(--indigo);
  color: var(--paper);
}

.page-faq .faq-group.skin-teal {
  --faq-accent: var(--gold-lt);
  --faq-line: rgba(63, 191, 160, .34);
  --faq-fg: var(--paper);
  --faq-fg-soft: rgba(245, 242, 234, .76);
  background: var(--teal);
  color: var(--paper);
}

.page-faq .faq-group.skin-wine {
  --faq-accent: var(--gold-lt);
  --faq-line: rgba(231, 204, 106, .3);
  --faq-fg: var(--paper);
  --faq-fg-soft: rgba(245, 242, 234, .76);
  background: var(--wine);
  color: var(--paper);
}

/* ---------- 分组标题 ---------- */

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

.page-faq .faq-group__head--split {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-faq .faq-group__kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 16px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--faq-accent);
}

.page-faq .faq-group__rule {
  flex: 0 1 130px;
  height: 1px;
  background: linear-gradient(90deg, var(--faq-accent), transparent);
}

.page-faq .faq-group__tag {
  font-size: 11.5px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--faq-fg-soft);
  white-space: nowrap;
}

.page-faq .faq-group__title {
  margin: 0;
  max-width: 24ch;
  color: var(--faq-fg);
}

.page-faq .faq-group__intro {
  margin: 16px 0 0;
  max-width: var(--read);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-fg-soft);
}

.page-faq .faq-group__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: rgba(0, 0, 0, .16);
  overflow: hidden;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 问答条目 ---------- */

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

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: clamp(16px, 2.3vw, 22px) 0;
  margin: 0;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: clamp(16px, 1.7vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.01em;
  color: var(--faq-fg);
  text-align: left;
  cursor: pointer;
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  padding-top: .42em;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--faq-accent);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__chev {
  flex: 0 0 auto;
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: .22em;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}

.page-faq .faq-q__chev::before,
.page-faq .faq-q__chev::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1px;
  background: var(--faq-accent);
  transform: translate(-50%, -50%);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}

.page-faq .faq-q__chev::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .kb-fold[data-open] .faq-q__chev {
  background: var(--faq-accent);
  border-color: var(--faq-accent);
}

.page-faq .kb-fold[data-open] .faq-q__chev::before {
  background: var(--navy);
}

.page-faq .kb-fold[data-open] .faq-q__chev::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .skin-paper.kb-fold[data-open] .faq-q__chev::before,
.page-faq .skin-paper .kb-fold[data-open] .faq-q__chev::before {
  background: var(--paper);
}

/* ---------- 答案 ---------- */

.page-faq .faq-a {
  padding-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-a__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
}

.page-faq .faq-fact {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 11px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--faq-accent);
  background: rgba(200, 162, 39, .08);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.3;
  color: var(--faq-fg-soft);
  white-space: nowrap;
}

.page-faq .faq-fact b {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--faq-accent);
}

.page-faq .faq-a__text {
  margin: 0;
  max-width: var(--read);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-fg-soft);
}

.page-faq .faq-a__link {
  margin: 14px 0 0;
}

.page-faq .faq-a__link a {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--faq-accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

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

/* ---------- 服务分组的双列 ---------- */

.page-faq .faq-group__body--split {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-faq .faq-group__aside {
  margin: 0;
}

.page-faq .faq-group__aside img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--faq-line);
  background: rgba(0, 0, 0, .18);
}

.page-faq .faq-group__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-fg-soft);
}

/* ---------- 结尾 ---------- */

.page-faq .faq-cta {
  position: relative;
  padding-block: clamp(52px, 8vw, 96px);
  background: linear-gradient(140deg, var(--navy-2) 0%, var(--navy) 68%);
  border-top: 1px solid rgba(200, 162, 39, .34);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(38%, 420px);
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--gold), transparent);
}

.page-faq .faq-cta__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-cta__title {
  margin: 0;
  max-width: 22ch;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(245, 242, 234, .74);
}

.page-faq .faq-cta__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 24px;
}

.page-faq .faq-cta__item {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid rgba(200, 162, 39, .34);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--gold-lt);
  word-break: break-all;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-a {
    padding-left: 34px;
    border-left: 2px solid var(--faq-accent);
    margin-left: 2px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-group__head--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  }

  .page-faq .faq-group__figure {
    transform: translateY(6px);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-group__body--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: calc(var(--head-h) + 84px);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-filterbar {
    padding-block: 11px;
  }

  .page-faq .kb-filter__btn {
    font-size: 12px;
    padding: 7px 12px;
  }

  .page-faq .faq-hero__links .kb-btn,
  .page-faq .faq-cta__actions .kb-btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-faq .faq-fact {
    font-size: 11.5px;
  }

  .page-faq .faq-fact b {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .kb-reveal,
  .page-faq .kb-reveal--slow {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .faq-q__chev,
  .page-faq .faq-q__chev::before,
  .page-faq .faq-q__chev::after,
  .page-faq .kb-filter__btn {
    transition: none;
  }
}
</main>