.page-faq {
  --faq-accent: var(--be-cyan);
  display: block;
  background: var(--be-void);
  color: var(--be-text);
}

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

/* ---------- 面包屑 ---------- */
.page-faq .be-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-block: 26px 4px;
  font-family: var(--be-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--be-muted);
}

.page-faq .be-breadcrumb__link {
  color: var(--be-cyan);
  text-decoration: none;
}

.page-faq .be-breadcrumb__link:hover {
  text-decoration: underline;
}

.page-faq .be-breadcrumb__sep {
  color: var(--be-line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--be-line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(34, 224, 255, .14), transparent 58%),
    radial-gradient(80% 70% at 0% 100%, rgba(255, 122, 47, .10), transparent 62%),
    var(--be-void);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -22% -12%;
  z-index: -1;
  pointer-events: none;
  transform: rotate(-2.4deg);
  background-image:
    repeating-linear-gradient(112deg, rgba(34, 224, 255, .085) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(112deg, rgba(233, 239, 246, .04) 0 1px, transparent 1px 24px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 36px;
  padding-block: 52px 60px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--be-sans);
  font-size: clamp(32px, 7.4vw, 56px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.012em;
}

.page-faq .faq-hero__text {
  margin-top: 18px;
  max-width: 40ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  align-self: start;
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  overflow: hidden;
  background: var(--be-line);
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 18px 16px;
  background: rgba(17, 28, 43, .88);
  border-top: 2px solid transparent;
}

.page-faq .faq-hero__stat:nth-child(1) { border-top-color: var(--be-cyan); }
.page-faq .faq-hero__stat:nth-child(2) { border-top-color: var(--be-orange); }
.page-faq .faq-hero__stat:nth-child(3) { border-top-color: var(--be-green); }
.page-faq .faq-hero__stat:nth-child(4) { border-top-color: var(--be-amber); }

.page-faq .faq-hero__num {
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: var(--be-text);
}

.page-faq .faq-hero__unit {
  font-family: var(--be-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--be-muted);
}

.page-faq .faq-hero__desc {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--be-muted);
}

/* ---------- 索引 ---------- */
.page-faq .faq-index {
  padding-block: 56px 8px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  overflow: hidden;
  background: var(--be-line-soft);
}

.page-faq .faq-index__item {
  display: flex;
  background: var(--be-slate);
}

.page-faq .faq-index__link {
  flex: 1;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no label"
    "no hint";
  gap: 3px 14px;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--be-text);
  border-left: 3px solid transparent;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}

.page-faq .faq-index__link:hover {
  background: #16273a;
  border-left-color: var(--be-cyan);
}

.page-faq .faq-index__link[aria-current="true"] {
  border-left-color: var(--be-cyan);
  background: var(--be-cyan-soft);
}

.page-faq .faq-index__no {
  grid-area: no;
  align-self: start;
  font-size: 22px;
  font-weight: 800;
  color: var(--be-cyan);
  line-height: 1.1;
}

.page-faq .faq-index__label {
  grid-area: label;
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-index__hint {
  grid-area: hint;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--be-muted);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  padding-block: 64px 24px;
}

.page-faq .faq-qa__intro {
  max-width: 46ch;
  margin-bottom: 34px;
}

.page-faq .faq-qa__heading {
  margin: 12px 0 0;
  font-size: clamp(24px, 4.4vw, 32px);
  font-weight: 800;
  line-height: 1.2;
}

.page-faq .faq-qa__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--be-muted);
}

.page-faq .faq-qa__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-faq .faq-group {
  position: relative;
  padding: 26px 20px 18px;
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  background: var(--be-slate);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--faq-accent);
}

.page-faq .faq-group--a { --faq-accent: var(--be-cyan); }
.page-faq .faq-group--b { --faq-accent: var(--be-orange); }
.page-faq .faq-group--c { --faq-accent: var(--be-green); }
.page-faq .faq-group--d { --faq-accent: var(--be-amber); }
.page-faq .faq-group--e { --faq-accent: var(--be-muted); }

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--be-line);
}

.page-faq .faq-group__no {
  font-size: 24px;
  font-weight: 800;
  color: var(--faq-accent);
  line-height: 1;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--be-muted);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--be-line-soft);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:hover .faq-item__title {
  color: var(--be-cyan);
}

.page-faq .faq-item__mark {
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border: 1px solid var(--be-cyan-edge);
  transform: rotate(45deg);
  transition: background .16s ease;
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--be-cyan);
}

.page-faq .faq-item__title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.62;
  transition: color .16s ease;
}

.page-faq .faq-item[open] .faq-item__title {
  color: var(--be-cyan);
}

.page-faq .faq-item__a {
  padding: 0 2px 16px 18px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--be-muted);
}

.page-faq .faq-item__a a {
  color: var(--be-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--be-cyan-edge);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--be-cyan);
}

/* ---------- 侧栏图 ---------- */
.page-faq .faq-side {
  margin: 0;
  align-self: start;
}

.page-faq .faq-side__media {
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  overflow: hidden;
  background: linear-gradient(160deg, var(--be-teal), var(--be-void) 78%);
}

.page-faq .faq-side__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: .82;
}

.page-faq .faq-side__text {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--be-muted);
}

/* ---------- 规则清单 ---------- */
.page-faq .faq-rules {
  padding-block: 72px 96px;
}

.page-faq .faq-rules__figure {
  margin: 0 0 44px;
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  overflow: hidden;
  background: var(--be-indigo);
}

.page-faq .faq-rules__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .88;
}

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

.page-faq .faq-rule-group:first-of-type {
  margin-top: 0;
}

.page-faq .faq-rule-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--be-line);
}

.page-faq .faq-rule-group__tag {
  color: var(--be-amber);
  border-color: rgba(255, 194, 75, .35);
  font-family: var(--be-mono);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-faq .faq-rule-group__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
}

.page-faq .faq-rule {
  border-bottom: 1px solid var(--be-line-soft);
  border-left: 3px solid transparent;
  padding-left: 14px;
  transition: background .18s ease, border-color .18s ease;
}

.page-faq .faq-rule[open] {
  border-left-color: var(--be-cyan);
  background: var(--be-cyan-soft);
}

.page-faq .faq-rule__head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding: 13px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-rule__no {
  font-size: 14px;
  font-weight: 700;
  color: var(--be-amber);
  letter-spacing: .06em;
}

.page-faq .faq-rule__title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  transition: color .16s ease;
}

.page-faq .faq-rule__head:hover .faq-rule__title {
  color: var(--be-cyan);
}

.page-faq .faq-rule[open] .faq-rule__title {
  color: var(--be-cyan);
}

.page-faq .faq-rule__body {
  padding: 0 2px 16px 46px;
}

.page-faq .faq-rule__dl {
  margin: 0;
}

.page-faq .faq-rule__row {
  display: grid;
  gap: 2px;
  padding-block: 7px;
}

.page-faq .faq-rule__row + .faq-rule__row {
  border-top: 1px dashed var(--be-line-soft);
}

.page-faq .faq-rule__row dt {
  font-family: var(--be-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--be-amber);
}

.page-faq .faq-rule__row dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--be-muted);
}

.page-faq .faq-rules__foot {
  margin-top: 56px;
  padding: 28px 24px;
  border: 1px solid var(--be-line);
  border-radius: var(--be-radius);
  background: linear-gradient(120deg, var(--be-indigo), var(--be-void) 82%);
  display: grid;
  gap: 20px;
}

.page-faq .faq-rules__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  max-width: 40ch;
}

.page-faq .faq-rules__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero__panel {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
    gap: 56px;
    padding-block: 76px 88px;
  }

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

  .page-faq .faq-index__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-group {
    padding: 28px 24px 20px;
  }

  .page-faq .faq-rule__body {
    padding-left: 52px;
  }

  .page-faq .faq-rule__row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }

  .page-faq .faq-rules__foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 32px 32px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-qa__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 36px 28px;
  }

  .page-faq .faq-group--a { grid-column: 1 / 8; }
  .page-faq .faq-side { grid-column: 8 / 13; margin-top: 28px; }
  .page-faq .faq-group--b { grid-column: 6 / 13; }
  .page-faq .faq-group--c { grid-column: 1 / 8; }
  .page-faq .faq-group--d { grid-column: 4 / 11; }
  .page-faq .faq-group--e { grid-column: 7 / 13; }

  .page-faq .faq-rules__figure {
    margin-bottom: 56px;
  }
}