.page-faq {
  --faq-line: rgba(143, 163, 184, .3);
  background: var(--k8-paper);
  color: var(--k8-graphite);
}

.page-faq .faq-group,
.page-faq .faq-q {
  scroll-margin-top: 108px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background:
    repeating-linear-gradient(90deg, rgba(143, 163, 184, .09) 0 1px, transparent 1px 88px),
    linear-gradient(160deg, #0B1B33 0%, #12294A 62%, #103050 100%);
  color: var(--k8-paper);
  padding: clamp(1.5rem, 3.5vw, 2.25rem) 0 clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid rgba(54, 240, 208, .24);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -55% 55%;
  height: 150%;
  background: linear-gradient(120deg, rgba(54, 240, 208, .15), rgba(124, 92, 255, .1) 55%, transparent 78%);
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero > .k8-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  margin-bottom: clamp(1.25rem, 3.5vw, 2rem);
}

.page-faq .faq-crumbs a {
  color: rgba(242, 245, 247, .85);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--k8-cyan);
}

.page-faq .faq-crumbs .k8-crumbs__item {
  color: rgba(242, 245, 247, .6);
}

.page-faq .faq-crumbs .k8-crumbs__sep {
  color: rgba(143, 163, 184, .6);
}

.page-faq .faq-hero__title {
  font-family: var(--k8-display);
  font-weight: 800;
  font-size: clamp(2rem, 6.4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0 0 1rem;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: 0 0 clamp(1.5rem, 4vw, 2.25rem);
  font-size: clamp(.98rem, 1.6vw, 1.08rem);
  line-height: 1.8;
  color: rgba(242, 245, 247, .8);
}

.page-faq .faq-hot__label {
  font-family: var(--k8-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--k8-cyan);
  margin: 0 0 .8rem;
}

.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .5rem;
}

.page-faq .faq-hot__list a {
  display: block;
  padding: .8rem .95rem;
  background: rgba(11, 27, 51, .55);
  border: 1px solid rgba(143, 163, 184, .32);
  border-left: 2px solid var(--k8-cyan);
  color: var(--k8-paper);
  text-decoration: none;
  font-size: .92rem;
  line-height: 1.5;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.page-faq .faq-hot__list a:hover,
.page-faq .faq-hot__list a:focus-visible {
  background: rgba(54, 240, 208, .13);
  border-color: var(--k8-cyan);
  transform: translateY(-2px);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.page-faq .faq-toc {
  border-top: 2px solid var(--k8-ink-900);
  padding-top: .9rem;
  min-width: 0;
}

.page-faq .faq-toc__title {
  font-family: var(--k8-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--k8-cyan-dark);
  margin: 0 0 .85rem;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0 0 .35rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc__item {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  padding: .45rem .7rem;
  border: 1px solid var(--k8-line);
  background: #fff;
  color: var(--k8-graphite);
  text-decoration: none;
  font-size: .84rem;
  white-space: nowrap;
  transition: border-color .18s ease, background .18s ease, color .18s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--k8-cyan-dark);
  background: rgba(54, 240, 208, .1);
  color: var(--k8-ink-900);
}

.page-faq .faq-toc__num {
  font-family: var(--k8-mono);
  font-size: .72rem;
  color: var(--k8-cyan-dark);
}

.page-faq .faq-toc__card {
  background: var(--k8-ink-900);
  border-left: 2px solid var(--k8-violet);
  padding: 1.1rem 1.15rem 1.25rem;
}

.page-faq .faq-toc__cardtitle {
  font-family: var(--k8-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--k8-cyan);
  margin: 0 0 .75rem;
}

.page-faq .faq-toc__cardlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-toc__cardlist a {
  display: flex;
  align-items: center;
  gap: .5rem;
  color: rgba(242, 245, 247, .88);
  text-decoration: none;
  font-size: .88rem;
  line-height: 1.5;
}

.page-faq .faq-toc__cardlist a::before {
  content: "→";
  font-family: var(--k8-mono);
  font-size: .8rem;
  color: var(--k8-cyan);
  flex: 0 0 auto;
}

.page-faq .faq-toc__cardlist a:hover,
.page-faq .faq-toc__cardlist a:focus-visible {
  color: var(--k8-cyan);
}

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

/* ---------- 筛选条 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  padding: .85rem 0 1.05rem;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 1.9rem;
}

.page-faq .faq-filter .k8-filter__label {
  font-family: var(--k8-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--k8-cyan-dark);
  margin-right: .3rem;
}

.page-faq .faq-filter .k8-filter__btn {
  font-family: var(--k8-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  padding: .4rem .72rem;
  border: 1px solid var(--k8-line);
  background: transparent;
  color: #46566a;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.page-faq .faq-filter .k8-filter__btn:hover,
.page-faq .faq-filter .k8-filter__btn:focus-visible {
  border-color: var(--k8-cyan-dark);
  color: var(--k8-ink-900);
}

.page-faq .faq-filter .k8-filter__btn[aria-pressed="true"] {
  background: var(--k8-cyan);
  border-color: var(--k8-cyan);
  color: var(--k8-ink-900);
  font-weight: 700;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.page-faq .faq-group[hidden] {
  display: none;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: .8rem;
  padding-bottom: .85rem;
  border-bottom: 2px solid var(--k8-ink-900);
  margin-bottom: .25rem;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  margin-top: .2rem;
  font-family: var(--k8-mono);
  font-size: .78rem;
  font-weight: 700;
  line-height: 1.5;
  padding: .12rem .42rem;
  background: var(--k8-ink-900);
  color: var(--k8-paper);
}

.page-faq .faq-group__headtext {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-group__title {
  font-family: var(--k8-display);
  font-weight: 800;
  font-size: clamp(1.22rem, 2.8vw, 1.6rem);
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--k8-ink-900);
  margin: 0 0 .45rem;
}

.page-faq .faq-group__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: #55677d;
}

/* ---------- 图 ---------- */
.page-faq .faq-fig {
  margin: 1.25rem 0 1.4rem;
  background: var(--k8-ink-900);
  border: 1px solid rgba(143, 163, 184, .35);
}

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

.page-faq .faq-fig figcaption {
  font-family: var(--k8-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  line-height: 1.6;
  color: rgba(143, 163, 184, .95);
  padding: .62rem .9rem;
  border-top: 1px solid rgba(143, 163, 184, .22);
}

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem 1.15rem;
  margin: 0 0 1.15rem;
  padding: .68rem .9rem;
  background: var(--k8-ink-900);
  color: rgba(242, 245, 247, .86);
  font-family: var(--k8-mono);
  font-size: .74rem;
  letter-spacing: .04em;
}

.page-faq .faq-legend__dot {
  display: inline-block;
  width: .58rem;
  height: .58rem;
  margin-right: .4rem;
  vertical-align: middle;
}

.page-faq .faq-legend__dot--classic {
  background: var(--k8-cyan);
}

.page-faq .faq-legend__dot--added {
  background: var(--k8-orange);
}

/* ---------- 问答 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-line);
  transition: background .18s ease, box-shadow .18s ease;
}

.page-faq .faq-q:hover {
  background: rgba(18, 41, 74, .035);
}

.page-faq .faq-q[open] {
  background: linear-gradient(90deg, rgba(54, 240, 208, .1), rgba(54, 240, 208, 0) 62%);
  box-shadow: inset 2px 0 0 var(--k8-cyan);
}

.page-faq .faq-q__trigger {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: 1rem .85rem 1rem .5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: .99rem;
  line-height: 1.62;
  color: var(--k8-ink-900);
}

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

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

.page-faq .faq-q__trigger:focus-visible {
  outline: 2px solid var(--k8-violet);
  outline-offset: -2px;
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  font-family: var(--k8-mono);
  font-size: .74rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--k8-cyan-dark);
  padding-top: .32rem;
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--k8-mono);
  font-size: 1.15rem;
  line-height: 1;
  padding-top: .18rem;
  color: var(--k8-cyan-dark);
  transition: color .2s ease;
}

.page-faq .faq-q[open] .faq-q__trigger::after {
  content: "−";
  color: var(--k8-orange);
}

.page-faq .faq-q__body {
  padding: 0 1rem 1.15rem 2.35rem;
  font-size: .94rem;
  line-height: 1.78;
  color: #3c4a5c;
}

.page-faq .faq-q__body p {
  margin: 0 0 .7rem;
}

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

.page-faq .faq-q__body a {
  color: var(--k8-ink-800);
  text-decoration: underline;
  text-decoration-color: var(--k8-violet);
  text-underline-offset: 3px;
}

.page-faq .faq-q__body a:hover,
.page-faq .faq-q__body a:focus-visible {
  color: var(--k8-cyan-dark);
}

/* ---------- 收尾提示 ---------- */
.page-faq .faq-note {
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--k8-orange);
  background: var(--k8-orange-pale);
}

.page-faq .faq-note p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.74;
  color: #5a3a20;
}

.page-faq .faq-note a {
  color: #7a3a10;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--k8-ink-900);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hot__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-q__body {
    padding-left: 2.5rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.75rem);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    margin-left: .1rem;
    border-left: 1px solid var(--faq-line);
  }

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

  .page-faq .faq-toc__link {
    display: flex;
    align-items: baseline;
    white-space: normal;
    border: 0;
    background: transparent;
    margin-left: -1px;
    padding: .5rem 0 .5rem .9rem;
    border-left: 2px solid transparent;
    font-size: .9rem;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-left-color: var(--k8-cyan);
    background: rgba(54, 240, 208, .08);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hot__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>