.page-faq {
  --faq-rail-w: 250px;
  --faq-gutter: 28px;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 118px 0 64px;
  border-bottom: 2px solid var(--neon);
}

.page-faq .faq-hero__glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(680px 320px at 82% 8%, rgba(59, 240, 196, 0.16), transparent 68%),
    repeating-linear-gradient(90deg, rgba(201, 214, 208, 0.07) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(201, 214, 208, 0.05) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.page-faq .faq-hero__crumbs {
  margin-bottom: 26px;
  padding: 0;
  border: 0;
}

.page-faq .faq-hero__crumbs .breadcrumbs__link {
  color: var(--neon);
}

.page-faq .faq-hero__crumbs .breadcrumbs__item {
  color: var(--cool);
}

.page-faq .faq-hero__title {
  color: var(--paper);
  margin: 14px 0 0;
  max-width: 16ch;
}

.page-faq .faq-hero__lede {
  color: var(--cool);
  max-width: 60ch;
  margin-top: 20px;
}

.page-faq .faq-hero__quick {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 40px 0 0;
  padding-top: 26px;
  border-top: 2px solid rgba(201, 214, 208, 0.22);
}

.page-faq .faq-hero__quick-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__quick dt {
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-hero__quick dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--paper);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: 56px 0 80px;
}

.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-rail {
  align-self: start;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 22px 20px 20px;
}

.page-faq .faq-rail__title {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 10px 10px 8px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
  border-left: 3px solid transparent;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mid);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(14, 122, 99, 0.08);
  border-left-color: var(--neon);
  color: var(--teal);
}

.page-faq .faq-rail__link:hover .faq-rail__num,
.page-faq .faq-rail__link:focus-visible .faq-rail__num {
  color: var(--teal);
}

.page-faq .faq-rail__hint {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--cool);
  font-size: 13px;
  line-height: 1.6;
  color: var(--mid);
}

/* ---------- 右侧流程区 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-filters {
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.page-faq .faq-filters .filter-btn {
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 8px 14px;
}

.page-faq .faq-group {
  margin-bottom: 64px;
  scroll-margin-top: 130px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 40px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 22px;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  font-weight: 700;
  color: var(--neon);
  -webkit-text-stroke: 1px var(--ink);
  flex: none;
  padding-top: 2px;
}

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

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mid);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 26px;
  border: 2px solid var(--ink);
  background: var(--night);
}

.page-faq .faq-figure .image-frame__media {
  --frame-ratio: 7 / 4;
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-faq .faq-figure .image-frame__caption {
  padding: 12px 16px;
  background: var(--paper);
  border-top: 2px solid var(--ink);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mid);
}

/* ---------- 状态示意图 ---------- */
.page-faq .faq-statuses {
  position: relative;
  z-index: 1;
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 18px 18px 20px;
  margin-bottom: 26px;
}

.page-faq .faq-statuses__lead {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mid);
}

.page-faq .faq-statuses__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .faq-statuses__step {
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-faq .faq-statuses__step + .faq-statuses__step::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--cool);
  display: block;
}

.page-faq .faq-statuses__step + .faq-statuses__step {
  margin-left: 0;
}

.page-faq .faq-statuses__step .tag {
  font-size: 12px;
  padding: 5px 10px;
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
}

.page-faq .faq-item {
  border-top: 1px solid var(--cool);
  transition: background 160ms ease;
}

.page-faq .faq-item:first-child {
  border-top: 2px solid var(--ink);
}

.page-faq .faq-item:last-child {
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-item[open] {
  background: rgba(14, 122, 99, 0.05);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 14px 18px 8px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__sum:hover .faq-item__q {
  color: var(--teal);
}

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

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--mid);
  flex: none;
  width: 28px;
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  transition: color 160ms ease;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
  background: var(--ink);
  transition: transform 180ms ease, background 180ms ease;
}

.page-faq .faq-item__mark::after {
  transform: rotate(90deg);
}

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

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: rotate(0deg);
  background: var(--teal);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--teal);
}

.page-faq .faq-item__body {
  padding: 0 20px 22px 50px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

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

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--ink);
  background: var(--neon);
}

/* ---------- 状态分组纹理 ---------- */
.page-faq .faq-group--status {
  position: relative;
}

.page-faq .faq-group__texture {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .faq-group--status > *:not(.faq-group__texture) {
  position: relative;
  z-index: 1;
}

/* ---------- 收尾引导 ---------- */
.page-faq .faq-next {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--neon);
  padding: 30px 22px 32px;
}

.page-faq .faq-next__eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-next__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 27px);
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-faq .faq-next__text {
  margin: 0 0 24px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cool);
}

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

.page-faq .faq-next__ghost {
  border-color: var(--cool);
  color: var(--paper);
}

.page-faq .faq-next__ghost:hover {
  border-color: var(--neon);
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero {
    padding: 132px 0 72px;
  }

  .page-faq .faq-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-item__sum {
    padding: 20px 18px 20px 10px;
    gap: 18px;
  }

  .page-faq .faq-item__no {
    width: 34px;
    font-size: 13px;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }

  .page-faq .faq-item__body {
    padding: 0 24px 24px 62px;
  }

  .page-faq .faq-next {
    padding: 38px 34px 40px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 150px 0 84px;
  }

  .page-faq .faq-body {
    padding: 76px 0 112px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 60px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 124px;
    padding: 26px 22px 24px;
  }

  .page-faq .faq-group {
    margin-bottom: 84px;
  }

  .page-faq .faq-filters {
    margin-bottom: 52px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-shell {
    grid-template-columns: 286px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }
}