.page-faq {
  --faq-border: #E3E9F4;
  --faq-text: #2C3852;
  display: block;
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 顶部 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 132px 0 0;
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(27, 63, 160, .55) 0%, rgba(6, 13, 31, 0) 62%),
    var(--navy-900);
  color: var(--on-dark);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(34, 49, 79, .9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 49, 79, .9) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .5;
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 30px;
}

.page-faq .faq-hero .breadcrumb__link {
  color: var(--on-dark-dim);
  text-decoration: none;
}

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

.page-faq .faq-hero .breadcrumb__current {
  color: var(--on-dark);
}

.page-faq .faq-hero h1 {
  max-width: 17ch;
  margin: 18px 0 0;
  color: #FFFFFF;
}

.page-faq .faq-hero .lede {
  max-width: 60ch;
  margin-top: 24px;
  color: var(--on-dark-dim);
  font-size: 17px;
  line-height: 1.8;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 52px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: rgba(34, 49, 79, .9);
  border: 1px solid rgba(34, 49, 79, .9);
}

.page-faq .faq-stats li {
  background: rgba(14, 35, 80, .78);
  padding: 22px 22px 24px;
}

.page-faq .faq-stats b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.page-faq .faq-stats span {
  display: block;
  margin-top: 12px;
  font-family: var(--font-note);
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: .04em;
  color: var(--on-dark-dim);
}

/* 顶部窄幅通栏图 */
.page-faq .faq-band {
  position: relative;
  margin: 64px 0 0;
}

.page-faq .faq-band img {
  display: block;
  width: 100%;
  height: clamp(170px, 24vw, 300px);
  object-fit: cover;
  object-position: center 45%;
}

.page-faq .faq-band::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(6, 13, 31, .55) 0%, rgba(6, 13, 31, .05) 46%, rgba(6, 13, 31, .92) 100%);
  pointer-events: none;
}

.page-faq .faq-band__cap {
  position: absolute;
  right: 24px;
  bottom: 16px;
  z-index: 1;
  font-family: var(--font-note);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(234, 241, 255, .72);
}

/* ---------- 主区 ---------- */
.page-faq .faq-body {
  padding: 88px 0 104px;
}

.page-faq .faq-grid {
  align-items: start;
  row-gap: 48px;
}

/* 左栏索引 */
.page-faq .faq-index__card {
  padding: 26px 24px 24px;
  background: var(--navy-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
  color: var(--on-dark);
}

.page-faq .faq-index__label {
  margin: 0 0 18px;
  font-family: var(--font-note);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(34, 49, 79, .95);
  color: var(--on-dark);
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .faq-index__link span {
  font-family: var(--font-display);
  font-size: 12px;
  color: var(--slate);
  letter-spacing: -.02em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--gold);
  padding-left: 6px;
}

.page-faq .faq-index__meta {
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-dark-dim);
}

/* 右栏问答流 */
.page-faq .faq-flow {
  position: relative;
  background-image: linear-gradient(to right, rgba(34, 49, 79, .075) 1px, transparent 1px);
  background-size: 96px 100%;
  background-position: -1px 0;
}

.page-faq .faq-group {
  margin-bottom: 60px;
  scroll-margin-top: 96px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group:target {
  animation: faq-target 1.4s var(--ease);
}

@keyframes faq-target {
  0% { box-shadow: inset 3px 0 0 var(--gold); }
  100% { box-shadow: inset 3px 0 0 rgba(245, 179, 1, 0); }
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--navy-800);
  margin-bottom: 2px;
}

.page-faq .faq-group__num {
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: -.02em;
  color: var(--blue);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 2.4vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--ink);
}

/* 折叠面板 */
.page-faq .details__item {
  background: #FFFFFF;
  border-bottom: 1px solid var(--faq-border);
  border-left: 1px solid var(--faq-border);
  border-right: 1px solid var(--faq-border);
}

.page-faq .details__summary {
  position: relative;
  display: block;
  padding: 22px 54px 22px 24px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: color .18s var(--ease), padding-left .2s var(--ease), background-color .18s var(--ease);
}

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

.page-faq .details__summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .22s var(--ease);
}

.page-faq .details__summary::after {
  content: "";
  position: absolute;
  right: 26px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .22s var(--ease), border-color .18s var(--ease);
}

.page-faq .details__summary:hover {
  background: #FBFCFE;
  color: var(--navy-800);
}

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

.page-faq .details__item[open] > .details__summary {
  padding-left: 30px;
  padding-bottom: 12px;
  color: var(--navy-700);
}

.page-faq .details__item[open] > .details__summary::before {
  transform: scaleY(1);
}

.page-faq .details__item[open] > .details__summary::after {
  transform: translateY(-30%) rotate(-135deg);
  border-color: var(--gold);
}

.page-faq .details__body {
  padding: 0 26px 26px 30px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-text);
}

.page-faq .details__body p {
  margin: 0 0 12px;
}

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

/* 编号步骤清单 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 16px 0 14px;
  padding: 0;
  border-top: 1px solid var(--faq-border);
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 10px 0 10px 44px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--faq-text);
  border-bottom: 1px solid var(--faq-border);
}

.page-faq .faq-steps li:last-child {
  border-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: -.02em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

/* 示意图 */
.page-faq .faq-figure {
  margin: 20px 0 4px;
  border: 1px solid var(--faq-border);
  background: #FFFFFF;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
  border-top: 1px solid var(--faq-border);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  margin-top: 68px;
  position: relative;
  padding: 40px 32px 34px;
  background:
    radial-gradient(120% 120% at 88% 0%, rgba(27, 63, 160, .5) 0%, rgba(6, 13, 31, 0) 60%),
    var(--navy-900);
  color: var(--on-dark);
  border-top: 2px solid var(--gold);
  scroll-margin-top: 96px;
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .faq-contact .eyebrow {
  color: var(--gold);
}

.page-faq .faq-contact h2 {
  margin: 14px 0 0;
  color: #FFFFFF;
}

.page-faq .faq-contact__text {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--on-dark-dim);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-contact__facts {
  margin: 0;
  border-top: 1px solid rgba(34, 49, 79, .95);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(34, 49, 79, .95);
}

.page-faq .faq-contact__row dt {
  flex: 0 0 108px;
  font-family: var(--font-note);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--on-dark-dim);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--on-dark);
  word-break: break-word;
}

.page-faq .faq-contact__row dd a {
  color: var(--blue);
  text-decoration: none;
}

.page-faq .faq-contact__row dd a:hover,
.page-faq .faq-contact__row dd a:focus-visible {
  color: var(--gold);
}

.page-faq .faq-contact__tip {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px dashed rgba(34, 49, 79, .95);
  font-size: 13px;
  line-height: 1.75;
  color: var(--on-dark-dim);
  max-width: 70ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
  }
}

@media (max-width: 1023px) {
  .page-faq .faq-hero {
    padding-top: 108px;
  }

  .page-faq .faq-hero h1 {
    max-width: 22ch;
  }

  .page-faq .faq-grid > .sp-4,
  .page-faq .faq-grid > .sp-8 {
    grid-column: 1 / -1;
  }

  .page-faq .faq-stats {
    grid-template-columns: 1fr;
    margin-top: 40px;
  }

  .page-faq .faq-band {
    margin-top: 44px;
  }

  .page-faq .faq-body {
    padding: 64px 0 76px;
  }

  .page-faq .faq-flow {
    background-image: none;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero {
    padding-top: 96px;
  }

  .page-faq .faq-hero .lede {
    font-size: 16px;
  }

  .page-faq .faq-band__cap {
    right: 16px;
    bottom: 12px;
    letter-spacing: .12em;
  }

  .page-faq .faq-group {
    margin-bottom: 44px;
  }

  .page-faq .faq-group__head {
    flex-wrap: wrap;
    gap: 8px;
  }

  .page-faq .details__summary {
    padding: 18px 46px 18px 18px;
    font-size: 16px;
  }

  .page-faq .details__item[open] > .details__summary {
    padding-left: 22px;
  }

  .page-faq .details__body {
    padding: 0 18px 22px 22px;
    font-size: 15px;
  }

  .page-faq .faq-steps li {
    padding-left: 36px;
  }

  .page-faq .faq-contact {
    padding: 32px 20px 28px;
  }

  .page-faq .faq-contact__row dt {
    flex: 0 0 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-group:target {
    animation: none;
  }

  .page-faq .details__summary,
  .page-faq .details__summary::before,
  .page-faq .details__summary::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}