.page-faq {
  --faq-rule: rgba(201, 214, 226, 0.18);
  --faq-rule-gold: rgba(217, 164, 65, 0.62);
  --faq-answer-bg: #F4F7FB;
  --faq-answer-ink: #101B26;
  color: var(--frost);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 38px;
  border-bottom: 1px solid var(--faq-rule);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(95, 200, 240, 0.16), transparent 56%),
    linear-gradient(0deg, rgba(217, 164, 65, 0.08), transparent 40%);
  pointer-events: none;
}

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

.page-faq .crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .crumb li + li::before {
  content: "/";
  margin-right: 10px;
  color: rgba(201, 214, 226, 0.35);
}

.page-faq .crumb a {
  color: var(--ice-soft);
  text-decoration: none;
}

.page-faq .crumb a:hover {
  color: var(--gold);
}

.page-faq .crumb li[aria-current] {
  color: var(--silver);
  opacity: 0.68;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 17ch;
  font-size: clamp(32px, 6.2vw, 74px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lead {
  margin: 24px 0 0;
  max-width: var(--measure);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 44px;
  margin: 34px 0 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 36px 0 76px;
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

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

/* ---------- 控制条 ---------- */
.page-faq .faq-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-tools__hint {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(201, 214, 226, 0.72);
}

.page-faq .faq-tools__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-tools__btns .btn {
  padding: 9px 16px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 32px 0 8px;
}

.page-faq .faq-figure .frame {
  display: block;
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-figure .frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--silver);
  opacity: 0.62;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: 44px;
  scroll-margin-top: 84px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  display: block;
  height: 3px;
  width: 128px;
  margin-top: -2px;
  background: linear-gradient(90deg, var(--faq-rule-gold), rgba(217, 164, 65, 0));
  transform: skewY(-4deg);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
}

.page-faq .faq-group__no {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 3.1vw, 33px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__intro {
  margin: 12px 0 0;
  max-width: var(--measure);
  font-size: 15px;
  line-height: 1.72;
  color: rgba(201, 214, 226, 0.78);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin-top: 16px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
  transition: border-color 180ms var(--ease);
}

.page-faq .faq-item[open] {
  border-bottom-color: var(--faq-rule-gold);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 22px;
  gap: 10px;
  align-items: start;
  padding: 18px 0;
  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(--ice);
  outline-offset: 4px;
}

.page-faq .faq-item__no {
  padding-top: 5px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ice-soft);
  transition: color 180ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--gold);
}

.page-faq .faq-item__text {
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 600;
  line-height: 1.52;
  color: var(--frost);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 4px;
  border: 1px solid var(--faq-rule-gold);
  border-radius: var(--radius-sharp);
  transition: background-color 180ms var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__sign::before {
  width: 10px;
  height: 1px;
}

.page-faq .faq-item__sign::after {
  width: 1px;
  height: 10px;
  transition: opacity 180ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 0 18px;
  padding: 18px 16px 20px;
  background: var(--faq-answer-bg);
  color: var(--faq-answer-ink);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-sharp);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: var(--measure);
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a a {
  color: var(--ice-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--cinnabar-deep);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: 20px 18px;
  border: 1px solid var(--faq-rule-gold);
  background: rgba(18, 32, 46, 0.74);
  border-radius: var(--radius-sharp);
}

.page-faq .faq-contact__label {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
}

.page-faq .faq-contact__k {
  min-width: 68px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: rgba(201, 214, 226, 0.78);
}

.page-faq .faq-contact__v {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--frost);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-rule);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(201, 214, 226, 0.72);
}

/* ---------- 右侧分类索引 ---------- */
.page-faq .faq-axis {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 56px 0 48px;
  }

  .page-faq .faq-item__q {
    grid-template-columns: 66px minmax(0, 1fr) 24px;
    gap: 16px;
    padding: 21px 0;
  }

  .page-faq .faq-item__a {
    margin-left: 82px;
    padding: 20px 24px 22px;
    font-size: 15.5px;
  }

  .page-faq .faq-contact {
    padding: 24px 26px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body__inner {
    grid-template-columns: minmax(0, 1fr) 92px;
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-axis {
    display: block;
    position: sticky;
    top: calc(var(--coordbar-h, 34px) + 28px);
    padding-top: 6px;
  }

  .page-faq .faq-axis__title {
    margin: 0 0 18px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: rgba(201, 214, 226, 0.55);
  }

  .page-faq .faq-axis__list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .page-faq .faq-axis__list a {
    display: block;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    padding-left: 9px;
    border-left: 1px solid var(--faq-rule);
    font-size: 12.5px;
    letter-spacing: 0.2em;
    color: rgba(201, 214, 226, 0.72);
    text-decoration: none;
    transition: color 180ms var(--ease), border-left-color 180ms var(--ease);
  }

  .page-faq .faq-axis__list a:hover,
  .page-faq .faq-axis__list a:focus-visible {
    color: var(--gold);
    border-left-color: var(--gold);
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-group {
    padding-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__no,
  .page-faq .faq-item__sign,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-axis__list a {
    transition: none;
  }
}