.page-faq {
  --faq-gap: clamp(20px, 3vw, 34px);
  --faq-line: var(--line);
}

/* 面包屑 */
.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 18px;
  padding-bottom: 4px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-faq .faq-crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

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

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -140px;
  width: 620px;
  height: 460px;
  background: linear-gradient(140deg, var(--spring) 0%, var(--winter) 48%, transparent 74%);
  opacity: .15;
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(40px, 7.2vw, 76px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.02;
}

.page-faq .faq-hero__lede {
  margin-top: 20px;
  max-width: 36ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__meta .num {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
}

.page-faq .faq-hero__meta .rule {
  width: 1px;
  height: 18px;
  background: var(--faq-line);
}

.page-faq .faq-hero__aside {
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--r);
}

.page-faq .faq-hero__aside-title {
  margin: 0 0 14px;
  color: var(--muted);
}

.page-faq .faq-hero__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-hero__links a {
  display: block;
  padding: 11px 10px 11px 16px;
  position: relative;
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  border-radius: 6px;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-hero__links a::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 2px;
  background: var(--season);
  opacity: .55;
  transition: opacity .2s var(--ease), top .2s var(--ease), bottom .2s var(--ease);
}

.page-faq .faq-hero__links a:hover,
.page-faq .faq-hero__links a:focus-visible {
  background: rgba(255, 255, 255, .06);
  color: var(--accent);
}

.page-faq .faq-hero__links a:hover::before,
.page-faq .faq-hero__links a:focus-visible::before {
  opacity: 1;
  top: 8px;
  bottom: 8px;
}

/* 字段说明 */
.page-faq .faq-fields__grid {
  margin-top: var(--faq-gap);
}

.page-faq .faq-field {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-field::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--fc, var(--winter));
}

.page-faq .faq-field:hover {
  transform: translateY(-3px);
  border-color: var(--fc, var(--winter));
}

.page-faq .faq-field__key {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-faq .faq-field__name {
  margin: 8px 0 12px;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .faq-field__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-field__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-field__note .num {
  font-family: var(--mono);
  font-weight: 600;
  color: var(--fc, var(--winter));
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: var(--faq-gap) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--panel-2);
}

.page-faq .faq-figure--inline {
  margin-top: 24px;
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 18px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--faq-line);
}

/* 问答主体 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-toc {
  position: sticky;
  top: calc(var(--hdr) + 26px);
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 4px;
}

.page-faq .faq-toc__list a {
  display: block;
  padding: 9px 10px 9px 14px;
  position: relative;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid var(--faq-line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--text);
  border-left-color: var(--accent);
}

.page-faq .faq-qa {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--hdr) + 24px);
  min-width: 0;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 8px;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .faq-group__bar {
  display: inline-block;
  width: 20px;
  height: 4px;
  border-radius: 2px;
  background: var(--fc, var(--season));
  flex: none;
}

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

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  transition: color .2s var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::before {
  content: "+";
  flex: none;
  width: 22px;
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--accent);
  text-align: center;
}

.page-faq .faq-item[open] > summary::before {
  content: "–";
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--accent);
}

.page-faq .faq-answer {
  padding: 0 0 20px 34px;
  max-width: 62ch;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 结尾提示 */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: clamp(24px, 3.4vw, 38px);
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .faq-cta__text {
  max-width: 52ch;
}

.page-faq .faq-cta__text h2 {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
}

.page-faq .faq-cta__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

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

/* 响应式 */
@media (max-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-hero__lede {
    max-width: none;
  }

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

  .page-faq .faq-toc {
    position: static;
  }

  .page-faq .faq-toc__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }

  .page-faq .faq-toc__list a {
    border-left: 0;
    border-bottom: 2px solid var(--faq-line);
    padding: 8px 12px;
    white-space: nowrap;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    border-bottom-color: var(--accent);
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero::before {
    width: 420px;
    height: 340px;
    right: -110px;
    opacity: .12;
  }

  .page-faq .faq-hero__meta {
    gap: 8px 12px;
  }

  .page-faq .faq-hero__meta .rule {
    display: none;
  }

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

  .page-faq .faq-answer {
    padding-left: 0;
  }

  .page-faq .faq-item > summary {
    gap: 8px;
  }

  .page-faq .faq-cta__actions {
    width: 100%;
  }

  .page-faq .faq-cta__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

.page-faq {
  --fc: transparent;
}