.page-faq {
  --faq-shadow: 0 18px 44px rgba(3, 8, 18, .45);
  --faq-hair: rgba(5, 10, 20, .14);
  --faq-on-deep: #C9D3DE;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(16px, 2.6vw, 24px);
  padding: 0;
  list-style: none;
  font-size: 13px;
}
.page-faq .breadcrumb-link {
  color: var(--muted);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--cyan);
  outline: none;
}
.page-faq .breadcrumb-current {
  color: var(--paper);
  font-weight: 600;
}

/* ---------- 框景首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 4vw, 40px) 0 clamp(34px, 6vw, 72px);
  background:
    radial-gradient(900px 420px at 88% -16%, rgba(47, 243, 208, .18), transparent 64%),
    radial-gradient(620px 340px at 4% 108%, rgba(255, 106, 42, .1), transparent 70%),
    linear-gradient(158deg, #050A14 0%, #0B1B33 56%, #0A1526 100%);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: var(--gutter);
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--line) 0 8px, transparent 8px 20px);
  opacity: .75;
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 3.4vw, 38px);
  background: rgba(5, 10, 20, .55);
  box-shadow: inset 0 0 0 1px rgba(47, 243, 208, .07);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 42px);
}
.page-faq .faq-hero__copy { min-width: 0; }
.page-faq .faq-hero__kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--cyan);
  border-radius: var(--radius);
}
.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-sans);
  font-size: clamp(30px, 5.6vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-faq .faq-hero__text {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--faq-on-deep);
}

/* ---------- 首屏跳转三角 ---------- */
.page-faq .faq-jump { min-width: 0; }
.page-faq .faq-jump__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.page-faq .faq-jump__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-jump__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper);
  text-decoration: none;
  background: rgba(11, 27, 51, .78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .18s var(--ease), transform .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  border-color: var(--cyan);
  background: rgba(19, 41, 75, .95);
  transform: translateY(-2px);
  outline: none;
}
.page-faq .faq-jump__list .mono {
  font-size: 11px;
  color: var(--cyan);
}

/* ---------- 主体区 ---------- */
.page-faq .faq-main {
  padding: clamp(28px, 5vw, 64px) 0 clamp(44px, 7vw, 96px);
}
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

/* 侧边索引 */
.page-faq .faq-side {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: linear-gradient(180deg, rgba(11, 27, 51, .96), rgba(19, 41, 75, .92));
}
.page-faq .faq-side__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}
.page-faq .faq-side__list {
  display: grid;
  gap: 2px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}
.page-faq .faq-side__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: border-color .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(47, 243, 208, .09);
  outline: none;
}
.page-faq .faq-side__num {
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: .04em;
}
.page-faq .faq-side__note {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

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

/* ---------- 索引面板 ---------- */
.page-faq .faq-intro {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, var(--deep), var(--slate));
  box-shadow: var(--faq-shadow);
}
.page-faq .faq-intro__head {
  padding: clamp(18px, 3.2vw, 30px);
}
.page-faq .faq-intro__tag {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-faq .faq-intro__title {
  margin: 0 0 10px;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-faq .faq-intro__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-on-deep);
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: 0;
  border-top: 1px solid var(--line);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-figure__cap {
  padding: 10px 18px 14px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}
.page-faq .faq-figure--inline {
  margin-top: 16px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(19, 41, 75, .06);
}
.page-faq .faq-figure--inline .faq-figure__cap {
  color: var(--ink-soft);
  background: rgba(19, 41, 75, .06);
}

/* 热门问题 */
.page-faq .faq-hot {
  padding: clamp(16px, 3vw, 26px);
  border-top: 1px solid var(--line);
}
.page-faq .faq-hot__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}
.page-faq .faq-hot__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hot__list a {
  display: inline-block;
  padding: 7px 12px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--paper);
  text-decoration: none;
  background: rgba(244, 247, 245, .05);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-hot__list a:hover,
.page-faq .faq-hot__list a:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

/* ---------- 问答展签 ---------- */
.page-faq .faq-cat {
  position: relative;
  margin-top: clamp(22px, 4vw, 42px);
  overflow: hidden;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--faq-shadow);
}
.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--cyan);
}
.page-faq .faq-cat--contact::before { background: var(--orange); }

.page-faq .faq-cat__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(16px, 2.8vw, 26px) clamp(16px, 2.8vw, 30px);
  background: linear-gradient(120deg, var(--deep), var(--slate));
  border-bottom: 1px solid var(--line);
  color: var(--paper);
}
.page-faq .faq-cat__index {
  flex: 0 0 auto;
  padding-top: 5px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}
.page-faq .faq-cat--contact .faq-cat__index { color: var(--orange); }
.page-faq .faq-cat__title {
  margin: 0 0 6px;
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-faq .faq-cat__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}
.page-faq .faq-cat__body {
  padding: 2px clamp(12px, 2.4vw, 22px) clamp(12px, 2.4vw, 20px);
}

.page-faq .faq-item {
  border-top: 1px solid var(--faq-hair);
}
.page-faq .faq-item:first-child { border-top: 0; }
.page-faq .faq-item:target { background: rgba(47, 243, 208, .12); }

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px clamp(6px, 1.4vw, 12px);
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  transition: color .18s var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan-deep);
  outline: none;
}
.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--cyan-deep);
}
.page-faq .faq-item__text { min-width: 0; }
.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  margin-left: auto;
  border: 1px solid rgba(5, 10, 20, .35);
  border-radius: 2px;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--cyan-deep);
}
.page-faq .faq-item__icon::before {
  width: 9px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 9px;
  transform: translate(-50%, -50%);
  transition: transform .18s var(--ease);
}
.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 clamp(6px, 1.4vw, 12px) 16px calc(28px + clamp(6px, 1.4vw, 12px));
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-item__a p { margin: 0 0 10px; }
.page-faq .faq-item__a p:last-child { margin-bottom: 0; }
.page-faq .faq-item__a a {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--ink);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero::after { display: none; }
  .page-faq .faq-cat__head { flex-direction: column; gap: 8px; }
  .page-faq .faq-cat__index { padding-top: 0; }
  .page-faq .faq-item__a { padding-left: calc(22px + 6px); }
  .page-faq .faq-hot__list a { font-size: 12.5px; }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 252px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-faq .faq-item__q { font-size: 16.5px; }
  .page-faq .faq-item__a { font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__list a,
  .page-faq .faq-hot__list a,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-side__list a {
    transition: none;
  }
  .page-faq .faq-jump__list a:hover,
  .page-faq .faq-jump__list a:focus-visible {
    transform: none;
  }
}