.page-faq {
  --faq-quiet: rgba(232, 241, 245, 0.78);
  --faq-soft: rgba(232, 241, 245, 0.62);
  background: var(--k-bg);
  color: var(--k-white);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: 22px;
}
.page-faq .faq-crumb__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--k-font-mono);
  font-size: var(--k-fs-xs);
  letter-spacing: 0.06em;
  color: var(--k-muted);
}
.page-faq .faq-crumb__inner a {
  color: var(--k-muted);
  text-decoration: none;
  transition: color 0.2s var(--k-ease);
}
.page-faq .faq-crumb__inner a:hover {
  color: var(--k-neon);
}
.page-faq .faq-crumb__inner [aria-current="page"] {
  color: var(--k-white);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(34px, 5vw, 60px);
  background:
    radial-gradient(90% 70% at 6% 0%, rgba(43, 227, 176, 0.11), transparent 62%),
    radial-gradient(70% 60% at 100% 8%, rgba(108, 124, 255, 0.12), transparent 60%),
    linear-gradient(180deg, #101820 0%, var(--k-bg) 100%);
  border-bottom: 1px solid var(--k-line);
}
.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--k-gap-md);
}
@media (min-width: 1024px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(230px, 0.45fr);
    align-items: end;
  }
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: clamp(22px, 3.2vw, 44px);
  border: 1px solid var(--k-line);
  border-radius: var(--k-r-4) var(--k-r-1) var(--k-r-4) var(--k-r-1);
  background: linear-gradient(180deg, rgba(20, 26, 34, 0.94), rgba(11, 15, 20, 0.88));
  box-shadow: var(--k-shadow);
  overflow: hidden;
}
.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, var(--k-grid-line) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, var(--k-grid-line) 0 1px, transparent 1px 88px);
  opacity: 0.2;
  pointer-events: none;
}
.page-faq .faq-hero__frame > * {
  position: relative;
}
.page-faq .faq-ticks {
  display: block;
  height: 9px;
  margin-bottom: 20px;
  background-image: repeating-linear-gradient(90deg, var(--k-muted) 0 1px, transparent 1px 22px);
  opacity: 0.55;
  -webkit-mask-image: linear-gradient(90deg, #000 0%, #000 58%, transparent 100%);
  mask-image: linear-gradient(90deg, #000 0%, #000 58%, transparent 100%);
}
.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  max-width: 24ch;
  font-size: clamp(29px, 4.6vw, 52px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--faq-quiet);
}

.page-faq .faq-finder {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 28px;
  padding: 14px 16px;
  border: 1px solid var(--k-line);
  border-left: 3px solid var(--k-signal);
  border-radius: var(--k-r-2) var(--k-r-4) var(--k-r-2) var(--k-r-4);
  background: rgba(11, 15, 20, 0.66);
}
.page-faq .faq-finder__label {
  font-size: var(--k-fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k-muted);
}
.page-faq .faq-finder__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-finder__links a {
  padding: 6px 13px;
  font-size: 13.5px;
  color: var(--k-white);
  text-decoration: none;
  border: 1px solid var(--k-line);
  border-radius: 12px 3px 12px 3px;
  transition: border-color 0.22s var(--k-ease), color 0.22s var(--k-ease), background 0.22s var(--k-ease);
}
.page-faq .faq-finder__links a:hover,
.page-faq .faq-finder__links a:focus-visible {
  color: var(--k-neon);
  border-color: rgba(43, 227, 176, 0.6);
  background: rgba(14, 59, 51, 0.5);
}

.page-faq .faq-hero__aside {
  align-self: stretch;
}
.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
@media (min-width: 1024px) {
  .page-faq .faq-stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}
.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0 12px 14px;
  border-left: 1px solid var(--k-line);
}
.page-faq .faq-stats__num {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  line-height: 1;
  color: var(--k-neon);
}
.page-faq .faq-stats__label {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--k-muted);
}

/* ---------- 分类总览 ---------- */
.page-faq .faq-overview {
  padding-top: var(--k-gap-lg);
}
.page-faq .faq-overview__head {
  margin-bottom: var(--k-gap-md);
}
.page-faq .faq-overview__title {
  max-width: 26ch;
}
.page-faq .faq-overview__lead {
  max-width: 60ch;
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-cats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
@media (min-width: 620px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1060px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-faq .faq-cat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 14px;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(180deg, rgba(20, 26, 34, 0.96), rgba(13, 18, 25, 0.92));
  border: 1px solid var(--k-line);
  border-radius: 2px 14px 2px 14px;
  transition: border-color 0.24s var(--k-ease), transform 0.24s var(--k-ease);
}
.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(43, 227, 176, 0.55);
}
.page-faq .faq-cat__num {
  font-size: var(--k-fs-xs);
  letter-spacing: 0.1em;
  color: var(--k-neon);
}
.page-faq .faq-cat__name {
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-faq .faq-cat__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--k-muted);
}
.page-faq .faq-cat__go {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--k-line-soft);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--k-white);
}

.page-faq .faq-overview__media,
.page-faq .faq-group__media {
  margin: var(--k-gap-md) 0 0;
}
.page-faq .faq-overview__media img,
.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--k-line);
  border-radius: var(--k-r-3) var(--k-r-1) var(--k-r-3) var(--k-r-1);
  object-fit: cover;
}
.page-faq .faq-overview__media .k-media__cap,
.page-faq .faq-group__media .k-media__cap {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--k-muted);
}

/* ---------- 双栏问答区 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--k-gap-md);
  width: 100%;
  max-width: var(--k-shell);
  margin: 0 auto;
  padding: var(--k-gap-lg) var(--k-gutter) var(--k-gap-lg);
}
@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(190px, 232px) minmax(0, 1fr);
    gap: var(--k-gap-lg);
  }
}

.page-faq .faq-index {
  align-self: start;
}
@media (min-width: 960px) {
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}
.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: var(--k-fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--k-muted);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 12px;
  border-left: 1px solid var(--k-line);
}
@media (min-width: 960px) {
  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
}
.page-faq .faq-index__list a {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-left: -1px;
  padding: 10px 0 10px 14px;
  font-size: 14px;
  color: var(--k-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--k-ease), border-color 0.2s var(--k-ease);
}
.page-faq .faq-index__list a:hover {
  color: var(--k-white);
}
.page-faq .faq-index__list a[aria-current="true"] {
  color: var(--k-neon);
  border-left-color: var(--k-neon);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-qa {
  min-width: 0;
}
.page-faq .faq-group + .faq-group {
  margin-top: var(--k-gap-lg);
}
.page-faq .faq-group__head {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--k-line);
}
.page-faq .faq-group__title {
  margin: 10px 0 0;
  max-width: 30ch;
  font-size: clamp(21px, 2.5vw, 29px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-faq .faq-item {
  position: relative;
  margin-bottom: 10px;
  background: var(--k-panel);
  border: 1px solid var(--k-line-soft);
  border-radius: 2px 12px 2px 12px;
  overflow: hidden;
  transition: border-color 0.24s var(--k-ease);
}
.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--k-neon);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.3s var(--k-ease);
}
.page-faq .faq-item[open] {
  border-color: rgba(43, 227, 176, 0.42);
}
.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--k-white);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--k-font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--k-neon);
  transition: transform 0.26s var(--k-ease);
}
.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(45deg);
}
.page-faq .faq-item__idx {
  flex: none;
  font-size: var(--k-fs-xs);
  letter-spacing: 0.08em;
  color: var(--k-muted);
}
.page-faq .faq-item__a {
  padding: 0 20px 18px 46px;
}
.page-faq .faq-item__a p {
  max-width: 58ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-quiet);
}
.page-faq .faq-item__a a {
  color: var(--k-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 176, 0.42);
}
.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--k-neon);
}

.page-faq .faq-group--export .faq-item:nth-of-type(4) {
  margin-bottom: 0;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  margin-top: var(--k-gap-lg);
  padding: clamp(22px, 3.2vw, 40px);
  border: 1px solid var(--k-line);
  border-radius: var(--k-r-4) var(--k-r-1) var(--k-r-4) var(--k-r-1);
  background:
    radial-gradient(80% 90% at 0% 0%, rgba(43, 227, 176, 0.14), transparent 60%),
    linear-gradient(140deg, rgba(14, 59, 51, 0.62), rgba(11, 15, 20, 0.94) 64%);
}
.page-faq .faq-contact__title {
  margin: 10px 0 18px;
  max-width: 26ch;
  font-size: clamp(22px, 2.8vw, 31px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
}
.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--k-gap-sm);
}
@media (min-width: 860px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(220px, 0.65fr);
    gap: var(--k-gap-md);
    align-items: start;
  }
}
.page-faq .faq-contact__main p {
  max-width: 56ch;
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--faq-quiet);
}
.page-faq .faq-contact__mail {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
  font-size: var(--k-fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--k-muted);
}
.page-faq .faq-contact__mail a {
  font-family: var(--k-font-mono);
  font-size: 15px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--k-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 176, 0.45);
}
.page-faq .faq-contact__mail a:hover {
  border-bottom-color: var(--k-neon);
}
.page-faq .faq-contact__side {
  padding-left: 0;
}
@media (min-width: 860px) {
  .page-faq .faq-contact__side {
    padding-left: 20px;
    border-left: 1px solid var(--k-line);
  }
}
.page-faq .faq-contact__side-note {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--faq-soft);
}
.page-faq .faq-contact__side .k-btn {
  display: inline-block;
  text-decoration: none;
}

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