.page-faq {
  --faq-muted: rgba(28, 31, 36, .72);
  --faq-cut: 16px;
  background: var(--snow);
  color: var(--ink);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .breadcrumbs__item {
  display: inline-flex;
  align-items: center;
}

.page-faq .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin: 0 8px;
  color: var(--glacier);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 84px) 0 clamp(44px, 7vw, 92px);
  background:
    radial-gradient(circle at 84% 16%, rgba(46, 211, 198, .18), transparent 46%),
    radial-gradient(circle at 6% 96%, rgba(242, 106, 46, .16), transparent 44%),
    linear-gradient(158deg, var(--graphite) 0%, var(--night) 62%, #0b1626 100%);
  color: var(--snow);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(169, 182, 194, .14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 182, 194, .14) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: .5;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lava), var(--pulse) 46%, transparent 94%);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 50px);
  align-items: center;
}

.page-faq .faq-hero .breadcrumbs__link {
  color: var(--glacier);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumbs__link:hover {
  color: var(--pulse);
}

.page-faq .faq-hero .breadcrumbs__current {
  color: var(--frost);
}

.page-faq .faq-hero .eyebrow {
  margin-top: 20px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -.01em;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--frost);
}

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

.page-faq .faq-hero__figure {
  margin: 0;
  padding: 10px;
  border: 1px solid rgba(169, 182, 194, .28);
  background: rgba(20, 35, 58, .58);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--glacier);
}

/* ---------- 高频入口条 ---------- */

.page-faq .faq-hot {
  padding: clamp(24px, 3.4vw, 34px) 0;
  background: var(--frost);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hot__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--night);
}

.page-faq .faq-hot__row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.page-faq .faq-hot__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--lava);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.4;
  transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .faq-hot__item:hover,
.page-faq .faq-hot__item:focus-visible {
  transform: translateX(4px);
  border-left-color: var(--pulse);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-hot__num {
  flex: none;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--ice);
}

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

/* ---------- 主体：索引 + 问答 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-top: clamp(38px, 6vw, 72px);
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-faq .faq-index {
  padding: 18px 18px 20px;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-top: 3px solid var(--ice);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-index__head {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--glacier);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--snow);
  border: 1px solid transparent;
  border-left: 2px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--frost);
  border-left-color: var(--lava);
}

.page-faq .faq-index__no {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ice);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-muted);
}

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

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

/* ---------- 分类区块 ---------- */

.page-faq .faq-cat {
  margin-bottom: clamp(36px, 5vw, 58px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: baseline;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-cat__num {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--lava);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 2.7vw, 30px);
  line-height: 1.2;
  letter-spacing: -.005em;
}

.page-faq .faq-cat__desc {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 折叠面板 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  background: #fff;
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--ice);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: border-color .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--pulse);
}

.page-faq .faq-item[open] {
  border-left-color: var(--lava);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item__idx {
  flex: none;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--glacier);
}

.page-faq .faq-item__text {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(16px, 1.8vw, 17.5px);
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-left: auto;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: var(--ice);
  transition: transform .26s var(--ease), background .26s var(--ease);
}

.page-faq .faq-item__mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: rotate(0deg);
}

.page-faq .faq-item[open] .faq-item__mark::before,
.page-faq .faq-item[open] .faq-item__mark::after {
  background: var(--lava);
}

.page-faq .faq-item__a {
  margin: 0 20px;
  padding: 14px 0 20px;
  border-top: 1px dashed var(--line-soft);
  animation: faqReveal .26s var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--faq-muted);
}

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

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-cat--support {
  padding: clamp(22px, 3.2vw, 34px);
  background:
    radial-gradient(circle at 92% 8%, rgba(46, 211, 198, .16), transparent 46%),
    linear-gradient(155deg, var(--night), var(--graphite));
  border: 1px solid rgba(169, 182, 194, .22);
  color: var(--snow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-cat--support .faq-cat__head {
  border-bottom-color: rgba(169, 182, 194, .24);
}

.page-faq .faq-cat--support .faq-cat__num {
  color: var(--lava);
}

.page-faq .faq-cat--support .faq-cat__title {
  color: var(--snow);
}

.page-faq .faq-cat--support .faq-cat__desc {
  color: var(--frost);
  opacity: .86;
}

.page-faq .faq-support {
  display: grid;
  gap: 16px;
  margin-bottom: 22px;
}

.page-faq .faq-support__card {
  padding: 16px 18px;
  background: rgba(244, 247, 249, .07);
  border: 1px solid rgba(169, 182, 194, .22);
  border-left: 3px solid var(--grass);
}

.page-faq .faq-support__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--pulse);
}

.page-faq .faq-support__value {
  margin: 0;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  word-break: break-all;
  color: var(--snow);
}

.page-faq .faq-support__hint {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--frost);
  opacity: .86;
}

.page-faq .faq-support__copy {
  margin-top: 12px;
}

.page-faq .faq-support__figure {
  margin: 0;
  border: 1px solid rgba(169, 182, 194, .22);
}

.page-faq .faq-support__figure img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-faq .faq-cat--support .faq-item {
  background: rgba(244, 247, 249, .06);
  border-color: rgba(169, 182, 194, .22);
  border-left-color: var(--grass);
}

.page-faq .faq-cat--support .faq-item:hover {
  border-left-color: var(--pulse);
}

.page-faq .faq-cat--support .faq-item[open] {
  border-left-color: var(--lava);
}

.page-faq .faq-cat--support .faq-item__idx {
  color: var(--pulse);
}

.page-faq .faq-cat--support .faq-item__text {
  color: var(--snow);
}

.page-faq .faq-cat--support .faq-item__a {
  border-top-color: rgba(169, 182, 194, .2);
}

.page-faq .faq-cat--support .faq-item__a p {
  color: var(--frost);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hot__row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-support {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-support__figure {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-faq .faq-body {
    grid-template-columns: 264px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 98px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hot__row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, .9fr) minmax(0, .9fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-faq .faq-support__figure {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}