.page-faq {
  --faq-glow: rgba(199, 242, 80, .12);
  --faq-wash: rgba(23, 58, 47, .5);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq .crumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 40px) 0 clamp(26px, 5vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 8%;
  right: -18%;
  width: min(560px, 72vw);
  height: 300px;
  background: radial-gradient(50% 60% at 50% 50%, var(--faq-glow), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 42%;
  height: 1px;
  background: linear-gradient(90deg, var(--lime), transparent);
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-hero__copy {
  max-width: 44rem;
}

.page-faq .faq-hero h1 {
  margin: 0.5rem 0 0;
  font-size: var(--fs-1);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.12;
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  color: var(--text);
  font-size: var(--fs-5);
  line-height: 1.8;
}

.page-faq .faq-hero__lede--sub {
  margin-top: 0.7rem;
  color: var(--muted);
  font-size: 1rem;
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__stat {
  display: grid;
  grid-template-columns: auto auto;
  align-items: baseline;
  gap: 0.25rem 0.5rem;
  padding: 0.9rem 1.05rem;
  background: var(--surface);
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__unit {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--orange);
}

.page-faq .faq-hero__label {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ---------- 分类标签条 ---------- */
.page-faq .faq-index {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 17, 14, .96), rgba(8, 17, 14, .82));
  backdrop-filter: blur(6px);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0.7rem 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  display: inline-block;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--muted);
  font-size: 0.9375rem;
  white-space: nowrap;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-color: var(--lime);
  background: rgba(199, 242, 80, .07);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(32px, 5.5vw, 60px) 0 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 1rem;
  padding: clamp(16px, 2.6vw, 26px);
  border: 1px solid var(--line);
  background: linear-gradient(118deg, var(--indigo) 0%, rgba(30, 27, 69, .35) 68%, transparent 100%);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--lime);
  line-height: 1.5;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: 800;
  letter-spacing: -0.005em;
  line-height: 1.3;
}

.page-faq .faq-group__lede {
  grid-column: 1 / -1;
  margin: 0.65rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-group__body {
  display: grid;
  gap: clamp(22px, 3.5vw, 38px);
  margin-top: clamp(16px, 2.5vw, 26px);
  align-items: start;
}

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  column-gap: 0.85rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .faq-item__no {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.04em;
  padding-top: 0.15rem;
}

.page-faq .faq-item__q {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: var(--fs-4);
  font-weight: 700;
  line-height: 1.45;
}

.page-faq .faq-item__a {
  grid-column: 2;
  grid-row: 2;
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 46rem;
}

.page-faq .faq-item__a a {
  color: var(--lime);
}

.page-faq .faq-group__list > .faq-item:first-child {
  border-left: 2px solid var(--lime);
  border-top-color: var(--line);
  padding-left: clamp(0.85rem, 2vw, 1.35rem);
  background: linear-gradient(90deg, rgba(199, 242, 80, .07), transparent 62%);
}

.page-faq .faq-group__list > .faq-item:nth-child(2) .faq-item__q {
  font-size: 1.0625rem;
}

.page-faq .faq-group__list > .faq-item:nth-child(n + 3) .faq-item__q {
  font-size: 1.0625rem;
  font-weight: 600;
}

.page-faq .faq-group__list > .faq-item:nth-child(n + 2) .faq-item__no {
  color: var(--muted);
}

/* ---------- 图 ---------- */
.page-faq .faq-group__figure {
  margin: 0;
}

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

/* ---------- 可展开进阶说明 ---------- */
.page-faq .faq-deep {
  margin-top: clamp(28px, 4.5vw, 48px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
  background: var(--faq-wash);
}

.page-faq .faq-deep__summary {
  cursor: pointer;
  padding: 1rem clamp(1rem, 2.4vw, 1.6rem);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text);
  list-style: none;
}

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

.page-faq .faq-deep__summary::after {
  content: "＋";
  float: right;
  font-family: var(--font-mono);
  color: var(--orange);
}

.page-faq .faq-deep[open] .faq-deep__summary::after {
  content: "－";
}

.page-faq .faq-deep__body {
  padding: 0 clamp(1rem, 2.4vw, 1.6rem) 1.35rem;
}

.page-faq .faq-deep__list {
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-deep__row {
  display: grid;
  gap: 0.2rem 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-deep__row dt {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--lime);
}

.page-faq .faq-deep__row dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-deep__note {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

.page-faq .faq-deep__note a,
.page-faq .faq-help__more a,
.page-faq .faq-help__note a {
  color: var(--lime);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  margin-top: clamp(36px, 6vw, 72px);
}

.page-faq .faq-help__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.3rem 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-help__idx {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--orange);
  line-height: 1.5;
}

.page-faq .faq-help__title {
  margin: 0;
  font-size: var(--fs-2);
  font-weight: 800;
  line-height: 1.25;
}

.page-faq .faq-help__lede {
  grid-column: 1 / -1;
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-help__sub {
  margin: 0 0 0.85rem;
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-faq .faq-help__list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.9;
}

.page-faq .faq-help__list li::marker {
  color: var(--lime);
}

.page-faq .faq-help__note {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-faq .faq-help__contact {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-faq .faq-help__row {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem clamp(0.9rem, 2vw, 1.25rem);
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .faq-help__key {
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-faq .faq-help__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lime);
  word-break: break-all;
}

.page-faq .faq-help__val--text {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text);
  word-break: normal;
  line-height: 1.7;
}

.page-faq .faq-help__more {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9375rem;
}

/* ---------- 断点 ---------- */
@media (min-width: 721px) {
  .page-faq .faq-deep__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 901px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--header-h);
    z-index: 5;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-group__body {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-group__body--single {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-group__figure {
    position: sticky;
    top: calc(var(--header-h) + 76px);
  }

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

@media (max-width: 480px) {
  .page-faq .faq-item {
    grid-template-columns: 1.9rem minmax(0, 1fr);
    column-gap: 0.6rem;
  }

  .page-faq .faq-hero__num {
    font-size: 1.65rem;
  }

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

  .page-faq .faq-group__idx {
    font-size: 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link {
    transition: none;
  }
}