.page-faq {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 2px solid var(--line-strong);
  padding: clamp(36px, 6.5vw, 76px) 0 clamp(34px, 5vw, 58px);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% 50%;
  opacity: .16;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(100deg, var(--ink) 6%, rgba(7, 12, 20, .74) 54%, rgba(7, 12, 20, .3) 100%),
    repeating-linear-gradient(90deg, rgba(47, 224, 220, .09) 0 1px, transparent 1px 68px);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 24px;
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.4vw, 3.9rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* 搜索框 */
.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 28px;
  max-width: 560px;
  padding: 4px 6px 4px 14px;
  border: 2px solid var(--line-strong);
  background: var(--board);
  box-shadow: 6px 6px 0 var(--grass);
  transition: border-color .2s ease;
}

.page-faq .faq-search:focus-within {
  border-color: var(--lime);
}

.page-faq .faq-search__icon {
  flex: none;
  color: var(--lime);
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 11px 0;
  border: 0;
  background: transparent;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.4;
  outline: none;
}

.page-faq .faq-search input::placeholder {
  color: var(--mist);
}

.page-faq .faq-search input::-webkit-search-cancel-button {
  filter: invert(1) opacity(.5);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: clamp(34px, 5vw, 64px) 0 88px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

/* ---------- 左侧环节目录 ---------- */
.page-faq .faq-toc {
  min-width: 0;
  border: 2px solid var(--line);
  background: var(--board);
}

.page-faq .faq-toc__head {
  margin: 0;
  padding: 13px 16px;
  border-bottom: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-toc__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: auto auto;
  align-items: baseline;
  gap: 9px;
  padding: 12px 16px;
  border-right: 1px solid var(--line);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s ease, background-color .18s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--white);
  background: rgba(200, 255, 61, .07);
}

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

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-toc__count {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
  margin-bottom: 40px;
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 13px;
  border-bottom: 2px solid var(--line-strong);
  transition: border-color .25s ease;
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--lime);
}

.page-faq .faq-group:target .faq-group__num {
  color: var(--lime);
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  transition: color .25s ease;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.12rem, 2.6vw, 1.55rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__meta {
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-group__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.page-faq .faq-list {
  margin-top: 16px;
}

.page-faq .faq-group__body .faq-list {
  margin-top: 0;
  min-width: 0;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 2px solid var(--line);
  background: var(--board);
  transition: border-color .2s ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item[open] {
  border-color: rgba(200, 255, 61, .5);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 48px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--white);
  transition: background-color .18s ease;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover {
  background: rgba(47, 224, 220, .05);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 15px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--orange);
}

.page-faq .faq-item__id {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-item__a {
  padding: 14px 18px 18px 44px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-item__a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .45);
}

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

/* ---------- 首组侧图 ---------- */
.page-faq .faq-side-media {
  margin: 0;
  border: 2px solid var(--line);
  background: var(--board);
  box-shadow: 6px 6px 0 var(--grass);
  overflow: hidden;
}

.page-faq .faq-side-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 4;
}

/* ---------- 人工接续 ---------- */
.page-faq .faq-handoff {
  margin-top: 16px;
  padding: 22px 22px 24px;
  border: 2px solid var(--line-strong);
  background: var(--board);
  box-shadow: 6px 6px 0 var(--grass);
}

.page-faq .faq-handoff p {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-group--media .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 208px;
    align-items: start;
  }

  .page-faq .faq-item__a {
    padding-left: 48px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
  }

  .page-faq .faq-toc__list > li {
    flex: none;
  }

  .page-faq .faq-toc__link {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
    padding: 11px 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-toc__list > li:last-child .faq-toc__link {
    border-bottom: 0;
  }

  .page-faq .faq-toc__count {
    display: block;
  }

  .page-faq .faq-group {
    margin-bottom: 48px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-group--media .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__q {
    padding: 14px 42px 14px 14px;
    font-size: 15px;
  }

  .page-faq .faq-item__a {
    padding: 13px 14px 16px 14px;
  }

  .page-faq .faq-search {
    box-shadow: 4px 4px 0 var(--grass);
  }
}