.page-faq {
  --faq-pad: clamp(20px, 4vw, 48px);
  background: var(--ink-900);
  color: var(--text-100);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-block: 28px 0;
  font-size: 13px;
  color: var(--text-400);
  letter-spacing: .02em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 40px 56px;
  border-bottom: 1px solid var(--rule-600);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(620px 320px at 88% 4%, rgba(53, 224, 196, .10), transparent 68%),
    radial-gradient(420px 280px at 6% 96%, rgba(255, 122, 58, .09), transparent 70%);
}
.page-faq .faq-hero__inner {
  position: relative;
}
.page-faq .faq-hero__kicker {
  margin: 0 0 22px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--aqua-400);
  text-transform: uppercase;
}
.page-faq .faq-hero h1 {
  margin: 0 0 22px;
  max-width: 20ch;
  font-size: clamp(30px, 5.2vw, 58px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--text-100);
}
.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: 0 0 32px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--text-100);
  opacity: .82;
}

.page-faq .faq-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
  margin: 0 0 34px;
  padding: 22px 0 0;
  border-top: 1px solid var(--rule-600);
  list-style: none;
}
.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  color: var(--text-400);
}
.page-faq .faq-hero__meta li .mk-mono {
  font-size: 20px;
  font-weight: 700;
  color: var(--amber-300);
  letter-spacing: .02em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  padding-block: 52px 88px;
}

/* ---------- 侧栏索引 ---------- */
.page-faq .faq-aside__label {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--text-400);
}
.page-faq .faq-toc ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule-600);
}
.page-faq .faq-toc li {
  border-bottom: 1px solid var(--rule-600);
}
.page-faq .faq-toc a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 13px 2px;
  font-size: 14px;
  color: var(--text-100);
  text-decoration: none;
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}
.page-faq .faq-toc a .mk-mono {
  font-size: 12px;
  color: var(--text-400);
  transition: color .2s var(--ease);
}
.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--aqua-400);
  padding-left: 6px;
}
.page-faq .faq-toc a:hover .mk-mono,
.page-faq .faq-toc a:focus-visible .mk-mono {
  color: var(--aqua-400);
}
.page-faq .faq-toc a[aria-current] {
  color: var(--aqua-400);
  padding-left: 6px;
  border-left: 2px solid var(--aqua-400);
  margin-left: -2px;
}
.page-faq .faq-toc a[aria-current] .mk-mono {
  color: var(--ember-500);
}

.page-faq .faq-aside__tip {
  margin-top: 26px;
  padding: 18px 16px;
  border: 1px solid var(--rule-600);
  background: var(--glass-700);
  backdrop-filter: blur(6px);
}
.page-faq .faq-aside__tip p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-400);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  margin-bottom: 72px;
}
.page-faq .faq-sec:last-child {
  margin-bottom: 0;
}
.page-faq .faq-sec .mk-section__head {
  border-top: 1px solid var(--rule-600);
  padding-top: 22px;
}
.page-faq .faq-sec .mk-section__num {
  color: var(--ember-500);
  font-size: 13px;
  letter-spacing: .1em;
}
.page-faq .faq-sec .mk-section__title {
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text-100);
}
.page-faq .faq-sec .mk-section__note {
  max-width: 56ch;
  color: var(--text-400);
  line-height: 1.8;
}
.page-faq .faq-sec__intro,
.page-faq .faq-sec__tail {
  max-width: 62ch;
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
}
.page-faq .faq-sec__tail a,
.page-faq .faq-sec__intro a {
  color: var(--aqua-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 196, .35);
}
.page-faq .faq-sec__tail a:hover,
.page-faq .faq-sec__intro a:hover {
  border-bottom-color: var(--aqua-400);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-cat {
  margin-top: 34px;
}
.page-faq .faq-cat__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-400);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--rule-600);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__no {
  flex: none;
  min-width: 46px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ember-500);
}
.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-100);
  transition: color .2s var(--ease);
}
.page-faq .faq-item summary:hover .faq-item__q {
  color: var(--aqua-400);
}
.page-faq .faq-item__mark {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--aqua-400);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}
.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}
.page-faq .faq-item__mark::after {
  top: 0;
  left: 6px;
  width: 1.5px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 0 22px 60px;
  max-width: 68ch;
}
.page-faq .faq-item__a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--aqua-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 196, .35);
}
.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--aqua-400);
}
.page-faq .faq-item__a .mk-checklist {
  margin: 4px 0 0;
}

/* ---------- 适配说明 ---------- */
.page-faq .faq-device {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}
.page-faq .faq-device__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
  max-width: 60ch;
}
.page-faq .faq-device__text .mk-checklist {
  margin-top: 20px;
}
.page-faq .faq-device__text .mk-checklist strong {
  color: var(--text-100);
}

.page-faq .faq-device__panel {
  padding: 24px 22px;
  background: var(--glass-700);
  border: 1px solid var(--rule-600);
  backdrop-filter: blur(8px);
}
.page-faq .faq-device__panel-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ember-500);
}
.page-faq .faq-device__panel > p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}
.page-faq .faq-device__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  counter-reset: none;
}
.page-faq .faq-device__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px dashed var(--rule-600);
  font-size: 14px;
  color: var(--text-100);
  line-height: 1.7;
}
.page-faq .faq-device__list li:last-child {
  border-bottom: none;
}
.page-faq .faq-device__list li .mk-mono {
  font-size: 12px;
  color: var(--amber-300);
}
.page-faq .faq-device__tail {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
}
.page-faq .faq-device__tail a {
  color: var(--aqua-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 196, .35);
}

/* ---------- 变更归档 ---------- */
.page-faq .faq-archive {
  margin-top: 26px;
  border-top: 1px solid var(--rule-600);
}
.page-faq .faq-archive__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule-600);
  position: relative;
}
.page-faq .faq-archive__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 0;
  background: var(--aqua-400);
  transition: height .3s var(--ease);
}
.page-faq .faq-archive__row:hover::before {
  height: 100%;
}
.page-faq .faq-archive__range {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ember-500);
}
.page-faq .faq-archive__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-100);
}
.page-faq .faq-archive__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-400);
  max-width: 62ch;
}
.page-faq .faq-archive__body .faq-archive__title {
  color: var(--text-100);
}

/* ---------- 图注 ---------- */
.page-faq .faq-figure {
  margin: 32px 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--rule-600);
  background: var(--ink-800);
}
.page-faq .faq-figure .mk-media__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-400);
}

/* ---------- 检索说明 ---------- */
.page-faq .faq-search {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 30px;
  border-top: 1px solid var(--rule-600);
}
.page-faq .faq-search__block {
  padding: 24px 0;
  border-bottom: 1px solid var(--rule-600);
}
.page-faq .faq-search__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--ember-500);
}
.page-faq .faq-search__block h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-100);
}
.page-faq .faq-search__block p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
  max-width: 58ch;
}
.page-faq .faq-copy {
  display: inline-block;
}

/* ---------- 反馈流程 ---------- */
.page-faq .faq-paper {
  margin-top: 30px;
  padding: var(--faq-pad);
}
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px dashed var(--cream-300);
}
.page-faq .faq-step:first-child {
  padding-top: 0;
}
.page-faq .faq-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.page-faq .faq-step__no {
  font-size: 13px;
  font-weight: 700;
  color: var(--ember-500);
  padding-top: 3px;
}
.page-faq .faq-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}
.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: #3a4a44;
  max-width: 58ch;
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--rule-600);
}
.page-faq .faq-split__col .mk-section__note {
  margin: 0 0 16px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-hero__meta li {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .page-faq .faq-archive__row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 24px;
    padding-left: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-block: 56px 68px;
  }
  .page-faq .faq-shell {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 68px;
    padding-block: 64px 104px;
  }
  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-faq .faq-device {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
  }
  .page-faq .faq-search {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--rule-600);
  }
  .page-faq .faq-search__block {
    padding: 26px 24px 26px 0;
    border-bottom: none;
    border-right: 1px solid var(--rule-600);
  }
  .page-faq .faq-search__block:last-child {
    border-right: none;
    padding-right: 0;
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-shell {
    grid-template-columns: 290px minmax(0, 1fr);
    gap: 88px;
  }
  .page-faq .faq-item__a {
    padding-left: 60px;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-item__a {
    padding-left: 0;
  }
  .page-faq .faq-item__no {
    min-width: 38px;
  }
  .page-faq .faq-hero__actions .mk-btn {
    width: 100%;
    text-align: center;
  }
}
<<<END>>>