.page-faq {
  display: block;
  color: var(--white);
  background:
    linear-gradient(180deg, rgba(43, 54, 65, 0.55) 0, rgba(10, 12, 11, 0.96) 260px, var(--ink) 520px);
  padding: 20px 0 88px;
}

.page-faq .faq-narrow {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* 首屏 */
.page-faq .crumbs {
  padding: 14px 0 0;
}

.page-faq .faq-hero {
  padding: 30px 0 28px;
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 5.6vw, 48px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 16px 0 18px;
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 60ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--mist);
}

/* 分类信息图 */
.page-faq .faq-map {
  margin: 24px 0 28px;
  border: 1px solid var(--grid);
  background: var(--ink-2);
  overflow: hidden;
}

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

/* 四象限分类入口 */
.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 44px;
}

.page-faq .faq-cat {
  position: relative;
  display: block;
  padding: 16px 60px 16px 16px;
  background: var(--ink-2);
  border: 1px solid var(--grid);
  border-top: 2px solid var(--grid);
  color: var(--white);
  text-decoration: none;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.page-faq .faq-cat:hover {
  border-color: var(--neon);
  background: #1b2024;
  transform: translateY(-2px);
}

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

.page-faq .faq-cat__icon {
  display: block;
  margin-bottom: 10px;
  color: var(--silver);
  transition: color 180ms ease;
}

.page-faq .faq-cat:hover .faq-cat__icon {
  color: var(--neon);
}

.page-faq .faq-cat__num {
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--neon);
}

.page-faq .faq-cat__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-20);
  letter-spacing: -0.01em;
}

.page-faq .faq-cat__hint {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--silver);
}

/* 问答分组 */
.page-faq .faq-group {
  padding: 30px 0 6px;
  border-top: 1px solid var(--grid);
  scroll-margin-top: 128px;
}

.page-faq .faq-group:target .faq-group__head h2 {
  color: var(--neon);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 4vw, 28px);
  letter-spacing: -0.02em;
  transition: color 160ms ease;
}

.page-faq .faq-group__count {
  flex: none;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--silver);
}

/* 折叠问答 */
.page-faq .faq-list {
  border-top: 1px solid var(--grid);
}

.page-faq .qa {
  border-bottom: 1px solid var(--grid);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-16);
  font-weight: 500;
  line-height: 1.55;
  color: var(--white);
  transition: color 160ms ease;
}

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

.page-faq .qa__q:hover {
  color: var(--neon);
}

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

.page-faq .qa__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--neon);
}

.page-faq .qa__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .qa__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
  transition: transform 160ms ease, opacity 160ms ease;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 30px 20px 2px;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover {
  color: var(--neon-2);
}

.page-faq .qa__a a:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* 移动端章节 */
.page-faq .faq-group--split {
  display: grid;
  gap: 8px;
}

.page-faq .faq-group__figure {
  margin: 22px auto 6px;
  max-width: 260px;
  border: 1px solid var(--grid);
}

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

/* 咨询引导 */
.page-faq .faq-help {
  margin-top: 56px;
  padding: 26px 20px 28px;
  border: 1px solid var(--grid);
  border-left: 4px solid var(--neon);
  background: var(--ink-2);
}

.page-faq .faq-help h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 4vw, 28px);
  letter-spacing: -0.02em;
}

.page-faq .faq-help p {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-help a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-help a:hover {
  color: var(--neon-2);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--ink);
}

.page-faq .faq-help__key {
  flex: none;
  width: 52px;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--silver);
}

.page-faq .faq-help__val {
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-help__tip {
  padding: 12px 14px;
  border-left: 4px solid var(--neon);
  background: rgba(180, 255, 46, 0.06);
  color: var(--white);
  font-size: var(--fs-14);
}

.page-faq .faq-help .btn {
  margin-top: 4px;
}

/* 平板及以上 */
@media (min-width: 600px) {
  .page-faq {
    padding: 28px 0 104px;
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-faq .faq-cat {
    padding: 18px 66px 18px 18px;
  }

  .page-faq .qa__q {
    padding: 18px 2px;
  }

  .page-faq .faq-help {
    padding: 30px 28px 32px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-group--split {
    grid-template-columns: minmax(0, 1fr) 240px;
    column-gap: 28px;
    align-items: start;
  }

  .page-faq .faq-group__main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-group__figure {
    grid-column: 2;
    grid-row: 1;
    margin: 34px 0 0;
    max-width: none;
  }

  .page-faq .faq-group--split .qa__a {
    padding-right: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .qa__q,
  .page-faq .qa__sign::after,
  .page-faq .faq-cat__icon,
  .page-faq .faq-group__head h2 {
    transition: none;
  }

  .page-faq .faq-cat:hover {
    transform: none;
  }
}