.page-faq {
  background: var(--cn-ice);
  color: var(--cn-ink);
  font-family: var(--cn-font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--cn-night);
  color: var(--cn-ice);
  padding: calc(var(--cn-header-h) + 2.2rem) 0 2.6rem;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-faq .faq-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(11, 35, 56, 0.42) 0%,
    rgba(11, 35, 56, 0.86) 58%,
    var(--cn-night) 100%
  );
}

.page-faq .faq-hero__inner {
  position: relative;
}

.page-faq .faq-hero .cn-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 1.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--cn-frost);
}

.page-faq .faq-hero .cn-breadcrumb a {
  color: var(--cn-ice-70);
  text-decoration: none;
}

.page-faq .faq-hero .cn-breadcrumb a:hover {
  color: var(--cn-gold);
}

.page-faq .faq-hero .cn-breadcrumb__sep {
  color: rgba(169, 200, 232, 0.5);
}

.page-faq .faq-hero__title {
  margin: 0 0 1rem;
  max-width: 16em;
  font-family: var(--cn-font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--cn-ice);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--cn-ice-70);
}

.page-faq .faq-search {
  margin-top: 1.9rem;
  max-width: 620px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--cn-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--cn-gold);
}

.page-faq .faq-search__input {
  box-sizing: border-box;
  display: block;
  width: 100%;
  padding: 0.9rem 1rem;
  font-family: var(--cn-font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--cn-ice);
  background: rgba(245, 249, 253, 0.07);
  border: 1px solid var(--cn-line-dark);
  border-left: 3px solid var(--cn-red);
  border-radius: 0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: background-color 200ms ease, border-color 200ms ease;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(169, 200, 232, 0.62);
}

.page-faq .faq-search__input:focus {
  background: rgba(245, 249, 253, 0.13);
  border-color: var(--cn-gold);
  border-left-color: var(--cn-red);
}

.page-faq .faq-hero__meta {
  margin: 1.35rem 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--cn-frost);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  padding: 0.4rem 0 4rem;
}

.page-faq .faq-group {
  padding: 2.8rem 0 0.6rem;
  scroll-margin-top: calc(var(--cn-header-h) + 1rem);
}

.page-faq .cn-band {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 1.5rem;
}

.page-faq .cn-band__label {
  flex: none;
  font-family: var(--cn-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--cn-red);
  white-space: nowrap;
}

.page-faq .cn-band__rule {
  flex: 1 1 auto;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--cn-red) 0%,
    rgba(215, 38, 61, 0.35) 38%,
    var(--cn-frost) 100%
  );
}

.page-faq .faq-group__title {
  margin: 0 0 0.75rem;
  font-family: var(--cn-font-display);
  font-weight: 800;
  font-size: clamp(1.28rem, 3.4vw, 1.95rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cn-blue);
}

.page-faq .faq-group__intro {
  margin: 0 0 1.5rem;
  max-width: 42em;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--cn-mist);
}

.page-faq .faq-group__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.8rem;
}

/* ---------- 手风琴 ---------- */
.page-faq .cn-fold {
  border-bottom: 1px solid var(--cn-line);
}

.page-faq .cn-fold__trigger {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  padding: 1.05rem 0.2rem;
  background: none;
  border: 0;
  font: inherit;
  text-align: left;
  color: var(--cn-ink);
  cursor: pointer;
  transition: color 180ms ease;
}

.page-faq .cn-fold__trigger:hover {
  color: var(--cn-blue);
}

.page-faq .faq-q__num {
  flex: none;
  padding-top: 0.3rem;
  font-family: var(--cn-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--cn-red);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.6;
}

.page-faq .cn-fold__icon {
  flex: none;
  margin-left: auto;
  padding-top: 0.25rem;
  color: var(--cn-blue);
  line-height: 0;
  transition: transform 240ms ease;
}

.page-faq .cn-fold__icon svg {
  display: block;
}

.page-faq .cn-fold__trigger[aria-expanded="true"] .cn-fold__icon,
.page-faq .cn-fold[data-open="true"] .cn-fold__icon {
  transform: rotate(180deg);
}

.page-faq .cn-fold__panel {
  border-left: 2px solid transparent;
  transition: border-color 220ms ease, background-color 220ms ease;
}

.page-faq .cn-fold__trigger[aria-expanded="true"] + .cn-fold__panel,
.page-faq .cn-fold[data-open="true"] .cn-fold__panel {
  border-left-color: var(--cn-blue);
  background: rgba(27, 110, 194, 0.06);
}

.page-faq .cn-fold__inner {
  padding: 0.15rem 0.9rem 1.25rem 0.9rem;
}

.page-faq .cn-fold__inner p {
  margin: 0 0 0.7rem;
  max-width: 42em;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--cn-ink);
}

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

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

.page-faq .cn-fold__inner a:hover {
  color: var(--cn-red);
}

.page-faq .cn-mono {
  font-family: var(--cn-font-mono);
  font-size: 0.9em;
  letter-spacing: 0.04em;
  word-break: break-all;
}

.page-faq mark {
  background: var(--cn-gold);
  color: var(--cn-ink);
  padding: 0 0.15em;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--cn-night);
  border: 1px solid var(--cn-line);
}

.page-faq .cn-media__caption {
  margin: 0.7rem 0 0;
  padding-left: 0.7rem;
  border-left: 2px solid var(--cn-frost);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--cn-mist);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-tail {
  margin: 2.6rem 0 0;
  padding: 1.8rem 1.3rem;
  background: linear-gradient(
    135deg,
    rgba(27, 110, 194, 0.12) 0%,
    rgba(35, 201, 182, 0.08) 100%
  );
  border: 1px solid var(--cn-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-faq .faq-tail__title {
  margin: 0 0 0.7rem;
  font-family: var(--cn-font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 2.6vw, 1.45rem);
  line-height: 1.35;
  color: var(--cn-night);
}

.page-faq .faq-tail__body {
  margin: 0 0 1.3rem;
  max-width: 44em;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--cn-mist);
}

.page-faq .faq-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: calc(var(--cn-header-h) + 3rem) 0 3.2rem;
  }

  .page-faq .faq-tail {
    padding: 2.2rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group__cols {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: 2.6rem;
    align-items: start;
  }

  .page-faq .faq-group {
    padding-top: 3.6rem;
  }

  .page-faq .cn-fold__trigger {
    padding: 1.15rem 0.3rem;
  }

  .page-faq .faq-q__text {
    font-size: 1.06rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .cn-fold__icon,
  .page-faq .cn-fold__panel,
  .page-faq .cn-fold__trigger {
    transition: none;
  }
}