.page-faq {
  --faq-paper-line: rgba(22, 19, 15, .14);
  --faq-hair: rgba(126, 154, 147, .26);
  --faq-hair-soft: rgba(126, 154, 147, .12);
  --faq-q-pad: clamp(16px, 2.4vw, 28px);
  --faq-bar-h: 56px;

  background: var(--mk-ink);
  color: var(--mk-cold);
}

/* ---------- 首屏：直接进入主题，无传统 Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero__inner {
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero .mk-crumb {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--mk-narrow);
  font-weight: 600;
  font-size: clamp(30px, 5.6vw, 60px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--mk-cold);
  max-width: 18em;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 34em;
  color: var(--mk-sage);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 52px);
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 14px;
  border-left: 2px solid var(--mk-amber);
}

.page-faq .faq-hero__meta-num {
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1;
  color: var(--mk-cold);
}

.page-faq .faq-hero__meta-label {
  font-size: 13px;
  color: var(--mk-sage);
  letter-spacing: .04em;
}

.page-faq .faq-hero__banner {
  border-top: 1px solid var(--faq-hair);
  overflow: hidden;
}

.page-faq .faq-hero__banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  opacity: .55;
}

/* ---------- 索引条：滚动后吸附在顶栏之下 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--mk-header-h);
  z-index: 5;
  background: rgba(11, 42, 34, .95);
  border-bottom: 1px solid var(--faq-hair);
  backdrop-filter: blur(6px);
}

.page-faq .faq-index__list {
  display: flex;
  gap: clamp(16px, 2.6vw, 36px);
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: var(--faq-bar-h);
  font-size: 14px;
  line-height: 1;
  color: var(--mk-sage);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .18s var(--mk-ease), border-color .18s var(--mk-ease);
}

.page-faq .faq-index__no {
  font-size: 11px;
  color: var(--mk-amber);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--mk-cold);
}

.page-faq .faq-index__link[aria-current="location"] {
  color: var(--mk-cyan);
  border-bottom-color: var(--mk-cyan);
}

/* ---------- 分组骨架 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--faq-hair);
  scroll-margin-top: calc(var(--mk-header-h) + var(--faq-bar-h));
}

.page-faq .faq-group:first-of-type {
  border-top: 0;
}

.page-faq .faq-group--alt {
  background: var(--mk-ink-2);
}

.page-faq .faq-group__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 44px);
}

.page-faq .faq-group__no {
  display: block;
  font-size: 12px;
  color: var(--mk-amber);
}

.page-faq .faq-group__title {
  margin: 10px 0 0;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.2;
  color: var(--mk-cold);
}

.page-faq .faq-group__note {
  margin: 12px 0 0;
  max-width: 24em;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mk-sage);
}

/* ---------- 问答：原生 details，奶油纸区 ---------- */
.page-faq .faq-list {
  background: var(--mk-paper);
  color: var(--mk-brown);
  border-top: 2px solid var(--mk-amber);
}

.page-faq .faq-item {
  border-top: 1px solid var(--faq-paper-line);
}

.page-faq .faq-item:first-child {
  border-top: 0;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 18px var(--faq-q-pad);
  cursor: pointer;
  list-style: none;
  font-family: var(--mk-narrow);
  font-weight: 600;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.5;
  color: var(--mk-brown);
  transition: background-color .18s var(--mk-ease);
}

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

.page-faq .faq-item__q:hover {
  background: rgba(22, 19, 15, .04);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--mk-amber);
  outline-offset: -2px;
}

.page-faq .faq-item__no {
  font-size: 12px;
  line-height: 2.1;
  color: var(--mk-amber);
}

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

.page-faq .faq-item__q::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-right: 1.5px solid var(--mk-brown);
  border-bottom: 1.5px solid var(--mk-brown);
  transform: rotate(45deg);
  transition: transform .22s var(--mk-ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item[open] .faq-item__q {
  background: rgba(22, 19, 15, .04);
}

.page-faq .faq-item__a {
  padding: 0 var(--faq-q-pad) 24px;
  animation: faq-answer-in .22s var(--mk-ease);
}

.page-faq .faq-answer {
  margin: 0 0 10px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mk-brown);
}

.page-faq .faq-answer:first-child {
  font-weight: 600;
}

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

.page-faq .faq-answer .mk-num {
  color: var(--mk-brown);
}

.page-faq .faq-figure {
  margin: 18px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--faq-paper-line);
}

.page-faq .faq-figure__cap {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(22, 19, 15, .58);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-group--tight {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-next__lead {
  margin: 0;
  font-family: var(--mk-narrow);
  font-weight: 600;
  font-size: clamp(16px, 1.9vw, 20px);
  color: var(--mk-cold);
}

.page-faq .faq-next__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-next__item {
  border-bottom: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-next__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 2px;
  font-family: var(--mk-narrow);
  font-weight: 600;
  font-size: 16px;
  color: var(--mk-cyan);
  text-decoration: none;
  transition: color .18s var(--mk-ease);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  color: var(--mk-cold);
}

.page-faq .faq-next__hint {
  font-family: var(--mk-sans);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mk-sage);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-group__inner {
    grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: calc(var(--mk-header-h) + var(--faq-bar-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-next__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 40px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__banner img {
    max-height: 340px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-index__link,
  .page-faq .faq-next__link {
    transition: none;
  }
}
<<<END>>>