.page-faq {
  --faq-gap: clamp(28px, 5vw, 56px);
  background: var(--k-carbon);
  color: var(--k-paper);
  font-family: var(--k-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 46px) 0 0;
  background: linear-gradient(155deg, var(--k-ink) 0%, var(--k-ink-2) 32%, var(--k-carbon) 82%);
  border-bottom: 2px solid var(--k-line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -8%;
  width: 52%;
  height: 146%;
  background: repeating-linear-gradient(118deg, rgba(43, 217, 255, 0.11) 0 1px, rgba(43, 217, 255, 0) 1px 15px);
  transform: rotate(-7deg);
  pointer-events: none;
  z-index: 0;
}

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

.page-faq .faq-hero__intro {
  padding-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 20ch;
  color: var(--k-paper);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--k-mist);
}

.page-faq .faq-hero__fig {
  margin: 0;
  border: 2px solid var(--k-line);
  box-shadow: var(--k-shadow);
  background: var(--k-ink);
}

.page-faq .faq-hero__fig .k-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--k-line);
  color: var(--k-mist);
  font-size: 13px;
  font-family: var(--k-mono);
  letter-spacing: 0.02em;
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  padding-top: var(--faq-gap);
  padding-bottom: var(--faq-gap);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 246px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

/* ---------- 侧栏索引 ---------- */

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

.page-faq .faq-rail__label {
  display: none;
  margin: 0 0 12px;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-bottom: 2px solid var(--k-line);
  color: var(--k-mist);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--k-ease), border-color 0.18s var(--k-ease), background 0.18s var(--k-ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--k-paper);
  border-bottom-color: var(--k-lime);
  background: var(--k-ink);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--k-blue);
  outline-offset: 2px;
}

.page-faq .faq-rail__num {
  font-family: var(--k-mono);
  font-size: 12px;
  color: var(--k-lime);
  letter-spacing: 0.06em;
}

@media (min-width: 900px) {
  .page-faq .faq-rail__label {
    display: block;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-rail__link {
    border-bottom: none;
    border-left: 2px solid var(--k-line);
    padding: 10px 12px;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--k-lime);
    border-bottom-color: transparent;
  }
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  border-top: 2px solid var(--k-line);
  padding-top: clamp(14px, 2vw, 20px);
  scroll-margin-top: 110px;
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-gap);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--k-mono);
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 700;
  line-height: 1;
  padding-top: 3px;
  color: var(--k-lime);
  letter-spacing: 0.02em;
}

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

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--k-display);
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--k-paper);
}

.page-faq .faq-group__sub {
  margin: 7px 0 0;
  font-family: var(--k-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--k-mist);
}

/* ---------- 折叠列表 ---------- */

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 2px solid var(--k-line);
  background: var(--k-ink);
  transition: border-color 0.18s var(--k-ease), background 0.18s var(--k-ease), box-shadow 0.18s var(--k-ease);
}

.page-faq .faq-item:hover {
  border-color: var(--k-silver);
}

.page-faq .faq-item[open] {
  background: var(--k-ink-2);
  border-color: var(--k-lime);
  box-shadow: var(--k-shadow-lime);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--k-paper);
  transition: color 0.18s var(--k-ease);
}

.page-faq .faq-q::-webkit-details-marker,
.page-faq .faq-q::marker {
  display: none;
  content: "";
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--k-blue);
  outline-offset: -2px;
}

.page-faq .faq-q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 2px solid var(--k-blue);
  border-bottom: 2px solid var(--k-blue);
  transform: rotate(45deg);
  transition: transform 0.2s var(--k-ease), border-color 0.2s var(--k-ease);
}

.page-faq .faq-item[open] > .faq-q::after {
  transform: rotate(-135deg);
  border-color: var(--k-lime);
}

.page-faq .faq-a {
  margin: 0 16px 16px;
  padding: 13px 16px;
  background: rgba(22, 51, 38, 0.55);
  border-left: 4px solid var(--k-lime);
  color: var(--k-mist);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-a p {
  margin: 0;
}

.page-faq .faq-a p + p {
  margin-top: 9px;
}

.page-faq .faq-a strong {
  color: var(--k-paper);
  font-weight: 700;
}

/* ---------- 步骤编号 ---------- */

.page-faq .faq-steps {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 32px;
  margin-top: 7px;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--k-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--k-lime);
}

/* ---------- 分组内的左右分栏 ---------- */

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

@media (min-width: 760px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 210px) minmax(0, 1fr);
    align-items: start;
    gap: 20px;
  }
}

.page-faq .faq-split__fig {
  margin: 0;
  border: 2px solid var(--k-line);
  background: var(--k-ink);
  box-shadow: var(--k-shadow);
}

.page-faq .faq-split__fig .k-figure__cap {
  padding: 10px 12px;
  border-top: 1px solid var(--k-line);
  font-size: 12px;
  line-height: 1.6;
  color: var(--k-mist);
}

/* ---------- 收尾联系块 ---------- */

.page-faq .faq-group--outro {
  border-top-color: var(--k-orange);
}

.page-faq .faq-outro {
  border: 2px solid var(--k-line);
  background: linear-gradient(160deg, var(--k-ink-2) 0%, var(--k-ink) 70%, var(--k-carbon) 100%);
  padding: clamp(20px, 4vw, 30px);
  box-shadow: var(--k-shadow-orange);
}

.page-faq .faq-outro__text {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--k-paper);
}

.page-faq .faq-outro__list {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-outro__list li {
  display: grid;
  gap: 3px;
  padding-left: 14px;
  border-left: 2px solid var(--k-line);
}

.page-faq .faq-outro__key {
  font-family: var(--k-mono);
  font-size: 11px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--k-mist);
}

.page-faq .faq-outro__val {
  font-family: var(--k-mono);
  font-size: clamp(15px, 3.2vw, 18px);
  color: var(--k-lime);
  overflow-wrap: anywhere;
}

.page-faq .faq-outro__hint {
  font-size: 13px;
  color: var(--k-mist);
}

.page-faq .faq-outro__act {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-outro__alt {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--k-mist);
}

.page-faq .faq-outro__alt a {
  color: var(--k-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-outro__alt a:hover,
.page-faq .faq-outro__alt a:focus-visible {
  color: var(--k-lime);
}

/* ---------- 图片通用约束 ---------- */

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q::after,
  .page-faq .faq-rail__link {
    transition: none;
  }
}
<<<END>>>