.page-faq {
  --kf-lift: #1D1834;
  --kf-rule: rgba(74, 63, 115, .72);
  padding-block: 1.5rem 4rem;
}

.page-faq .kf-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.25rem;
  max-width: 82rem;
  margin: 0 auto;
  padding-inline: 1rem;
}

@media (min-width: 60rem) {
  .page-faq .kf-wrap {
    grid-template-columns: 11.5rem minmax(0, 1fr);
    gap: 3rem;
    padding-inline: 2rem;
  }
}

/* ---------- 左轨道 ---------- */
.page-faq .kf-rail {
  align-self: start;
  border-left: 2px solid var(--edge);
  padding-left: .9rem;
}

@media (min-width: 60rem) {
  .page-faq .kf-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
    max-height: calc(100vh - var(--header-h) - 2.5rem);
    overflow-y: auto;
  }
}

.page-faq .kf-rail .arc-rail__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--haze);
  text-transform: uppercase;
}

.page-faq .kf-rail .arc-rail__list {
  list-style: none;
  margin: .7rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

@media (min-width: 60rem) {
  .page-faq .kf-rail .arc-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: .1rem;
  }
}

.page-faq .kf-rail .arc-rail__link {
  display: block;
  padding: .38rem .55rem;
  font-size: .93rem;
  font-weight: 700;
  color: var(--haze);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color .16s var(--ease), background-color .16s var(--ease),
    border-color .16s var(--ease);
}

.page-faq .kf-rail .arc-rail__link:hover,
.page-faq .kf-rail .arc-rail__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--volt);
  background: rgba(47, 210, 255, .09);
}

.page-faq .kf-rail .arc-rail__link[aria-current="true"] {
  color: var(--ink);
  border-left-color: var(--neon);
  background: rgba(168, 85, 247, .15);
}

/* ---------- 首屏 ---------- */
.page-faq .kf-hero {
  margin-bottom: 3rem;
}

.page-faq .kf-hero .arc-crumb {
  margin-bottom: 1.1rem;
}

.page-faq .kf-hero .arc-h1 {
  margin: .5rem 0 .9rem;
  max-width: 22em;
}

.page-faq .kf-hero .arc-lead {
  max-width: 38em;
}

.page-faq .kf-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 1.9rem 0 0;
  background: var(--edge);
  border: 2px solid var(--edge);
}

@media (min-width: 48rem) {
  .page-faq .kf-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .kf-stat {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  background: var(--panel);
}

.page-faq .kf-stat__label {
  display: block;
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--haze);
}

.page-faq .kf-stat__num {
  display: block;
  margin: .4rem 0 0;
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.05;
  color: var(--amber);
}

.page-faq .kf-stat__unit {
  margin-left: .2rem;
  font-size: .76rem;
  font-weight: 500;
  color: var(--haze);
}

/* ---------- 区块 ---------- */
.page-faq .kf-sec {
  margin-bottom: 3.25rem;
  scroll-margin-top: calc(var(--header-h) + 1.25rem);
}

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

.page-faq .kf-sub {
  max-width: 36em;
  margin: .7rem 0 1.4rem;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-faq .kf-sec .arc-h2 {
  margin-bottom: .2rem;
}

/* ---------- 图片 ---------- */
.page-faq .kf-figure {
  margin: 0 0 1.6rem;
}

.page-faq .kf-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  background: var(--panel);
  border: 2px solid var(--edge);
  box-shadow: var(--shadow-hard);
}

.page-faq .kf-figure figcaption {
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--haze);
}

@media (min-width: 60rem) {
  .page-faq .kf-split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 18rem;
    gap: 2rem;
    align-items: start;
  }

  .page-faq .kf-figure--side {
    margin-bottom: 0;
  }
}

.page-faq .kf-figure--side img {
  aspect-ratio: 10 / 7;
}

/* ---------- 折叠面板 ---------- */
.page-faq .kf-panels {
  display: grid;
  gap: .7rem;
}

.page-faq .arc-panel {
  border: 2px solid var(--edge);
  border-left: 4px solid var(--neon);
  background: var(--panel);
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease),
    transform .16s var(--ease);
}

.page-faq #fees .arc-panel {
  border-left-color: var(--gold);
}

.page-faq #compare .arc-panel {
  border-left-color: var(--amber);
}

.page-faq #lookup .arc-panel {
  border-left-color: var(--volt);
}

.page-faq #security .arc-panel {
  border-left-color: var(--mint);
}

.page-faq .arc-panel:hover,
.page-faq .arc-panel:focus-within {
  border-top-color: var(--neon);
  border-right-color: var(--neon);
  border-bottom-color: var(--neon);
  box-shadow: 4px 4px 0 0 rgba(74, 63, 115, .95);
  transform: translate(-2px, -2px);
}

.page-faq .arc-panel[open] {
  border-top-color: var(--neon);
  border-right-color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .arc-panel summary {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
}

.page-faq .arc-panel summary::-webkit-details-marker {
  display: none;
}

.page-faq .arc-panel summary::marker {
  content: "";
}

.page-faq .kf-q {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .arc-panel__arrow {
  position: relative;
  flex: 0 0 auto;
  width: 1rem;
  height: 1rem;
  margin-top: .28rem;
  transition: transform .18s var(--ease);
}

.page-faq .arc-panel__arrow::before,
.page-faq .arc-panel__arrow::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--volt);
}

.page-faq .arc-panel__arrow::before {
  width: 1rem;
  height: 2px;
}

.page-faq .arc-panel__arrow::after {
  width: 2px;
  height: 1rem;
  transition: opacity .18s var(--ease);
}

.page-faq .arc-panel[open] .arc-panel__arrow {
  transform: rotate(90deg);
}

.page-faq .arc-panel[open] .arc-panel__arrow::after {
  opacity: 0;
}

.page-faq .arc-panel__body {
  margin: 0 .8rem .85rem;
  padding: .85rem 1rem .95rem 1.5rem;
  border-left: 2px solid rgba(168, 85, 247, .4);
  border-top: 1px solid var(--kf-rule);
  background: var(--kf-lift);
  color: var(--ink-soft);
  font-size: .95rem;
  line-height: 1.75;
}

.page-faq .arc-panel__body p {
  margin: 0;
  max-width: 34em;
}

.page-faq .arc-panel__body a {
  color: var(--volt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .kf-panel--fee {
  background: linear-gradient(100deg, rgba(255, 207, 92, .11), var(--panel) 46%);
}

.page-faq .kf-panel--fee .kf-q {
  color: var(--gold);
}

/* ---------- 速查条件标签 ---------- */
.page-faq .kf-filters {
  list-style: none;
  margin: 0 0 1.3rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-faq .kf-filters .arc-tag {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
}

/* ---------- 咨询清单 ---------- */
.page-faq .kf-ask {
  margin-top: 1.2rem;
  padding: 1.5rem 1.25rem 1.4rem;
  border: 2px solid var(--edge);
  border-left: 6px solid var(--amber);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .kf-ask > p {
  margin: 0;
  max-width: 36em;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-faq .kf-checklist {
  list-style: none;
  margin: 1.15rem 0 1.4rem;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-faq .kf-checklist li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .95rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .kf-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .58rem;
  height: .58rem;
  background: var(--volt);
  box-shadow: 0 0 8px rgba(47, 210, 255, .55);
}

.page-faq .kf-ask__acts {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 0 0 1.3rem;
}

.page-faq .kf-contact {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .85rem;
  line-height: 2;
  color: var(--haze);
  word-break: break-word;
}

.page-faq .kf-links {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--kf-rule);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--haze);
}

.page-faq .kf-links a {
  color: var(--volt);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 210, 255, .45);
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .kf-links a:hover,
.page-faq .kf-links a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--neon);
}

/* ---------- 聚焦态 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .arc-panel,
  .page-faq .arc-panel__arrow,
  .page-faq .arc-rail__link {
    transition: none;
  }

  .page-faq .arc-panel:hover,
  .page-faq .arc-panel:focus-within {
    transform: none;
  }
}