.page-faq {
  --faq-step-col: 3rem;
  --faq-divider: 1px solid var(--line);
}

/* 首屏：非对称双栏 */
.page-faq .faq-h1 {
  margin: 0.5rem 0 1rem;
  font-size: clamp(1.7rem, 6.6vw, 2.85rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-lede {
  max-width: 36em;
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-inline-link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--text);
  border-bottom-color: var(--brass-lit);
}

.page-faq .faq-brief {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--brass);
}

.page-faq .faq-brief__list {
  list-style: none;
  counter-reset: brief;
  margin: 0.75rem 0 0;
  padding: 0;
}

.page-faq .faq-brief__list li {
  counter-increment: brief;
  border-top: var(--faq-divider);
}

.page-faq .faq-brief__list li:last-child {
  border-bottom: var(--faq-divider);
}

.page-faq .faq-brief__list a {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  align-items: baseline;
  padding: 0.55rem 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-brief__list a::before {
  content: counter(brief, decimal-leading-zero);
  color: var(--brass-lit);
}

.page-faq .faq-brief__list a:hover,
.page-faq .faq-brief__list a:focus-visible {
  color: var(--neon);
}

.page-faq .faq-brief__note {
  margin: 0.9rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 筛选条 */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 1.25rem 0 1.5rem;
}

.page-faq .filter-btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 0.45rem 0.7rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .filter-btn:hover {
  color: var(--text);
  border-color: var(--karst-lift);
}

.page-faq .filter-btn[aria-pressed="true"] {
  color: var(--neon);
  border-color: var(--neon);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-faq .filter-count-wrap {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-left: auto;
}

.page-faq .filter-count {
  color: var(--brass-lit);
}

/* 现象索引卡片 */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--faq-divider);
}

.page-faq .faq-card {
  padding: 1.1rem 0;
  border-bottom: var(--faq-divider);
}

.page-faq .faq-card.is-filtered {
  display: none;
}

.page-faq .faq-card__tag {
  display: inline-block;
  margin: 0 0 0.5rem;
}

.page-faq .faq-card__q {
  margin: 0 0 0.4rem;
  font-size: 1.0625rem;
  line-height: 1.45;
  color: var(--text);
}

.page-faq .faq-card__a {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-card__go {
  margin: 0.6rem 0 0;
}

.page-faq .faq-card__go a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-card__go a:hover,
.page-faq .faq-card__go a:focus-visible {
  color: var(--text);
}

/* 排查步骤 */
.page-faq .step-list {
  list-style: none;
  counter-reset: step;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-faq .step {
  counter-increment: step;
  display: grid;
  grid-template-columns: var(--faq-step-col) 1fr;
  gap: 0 0.75rem;
  padding: 1.05rem 0;
  border-top: var(--faq-divider);
}

.page-faq .step:last-child {
  border-bottom: var(--faq-divider);
}

.page-faq .step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
  padding-top: 0.15rem;
}

.page-faq .step__body h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--text);
}

.page-faq .step__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 分支标记 */
.page-faq .branch-mark {
  margin: 1.25rem 0 0;
  color: var(--karst-lift);
}

.page-faq .branch-mark svg {
  display: block;
  width: 100%;
  max-width: min(320px, 100%);
  height: auto;
}

.page-faq .branch-mark__note {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: min(320px, 100%);
  margin: 0.5rem 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-faq .branch-mark__note span:last-child {
  text-align: right;
}

/* 旁注列 */
.page-faq .faq-aside {
  margin-top: 2rem;
}

.page-faq .faq-aside .aside-note {
  margin-top: 1.25rem;
}

.page-faq .media-frame__caption {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .media-frame img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 兼容异常三类 */
.page-faq .type-list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--faq-divider);
  margin-top: 1rem;
}

.page-faq .type {
  padding: 1.1rem 0;
  border-bottom: var(--faq-divider);
}

.page-faq .type__no {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

.page-faq .type__name {
  margin: 0 0 0.45rem;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .type__desc {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .type__fix {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--karst-lift);
}

.page-faq .faq-compat-row {
  margin-top: 2rem;
}

.page-faq .compat {
  padding: 1.1rem 1.15rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.page-faq .compat__steps {
  list-style: none;
  counter-reset: compat;
  margin: 1rem 0 0;
  padding: 0;
}

.page-faq .compat__steps li {
  counter-increment: compat;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0 0.6rem;
  padding: 0.6rem 0;
  border-top: var(--faq-divider);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .compat__steps li::before {
  content: "0" counter(compat) "";
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.page-faq .compat__note {
  margin: 1rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--brass);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 入口替代路径 */
.page-faq .path-list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: var(--faq-divider);
  margin-top: 1rem;
}

.page-faq .path {
  padding: 1.1rem 0;
  border-bottom: var(--faq-divider);
}

.page-faq .path__no {
  margin: 0 0 0.35rem;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

.page-faq .path__name {
  margin: 0 0 0.45rem;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--text);
}

.page-faq .path__desc {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .path-route {
  display: grid;
  grid-template-columns: 4.25rem 1fr;
  gap: 0.5rem;
  align-items: baseline;
  margin: 0 0 0.3rem;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
}

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

.page-faq .path-route__k {
  color: var(--muted);
}

.page-faq .path-route__v {
  color: var(--karst-lift);
  word-break: break-all;
}

.page-faq .path-route:last-child .path-route__v {
  color: var(--neon);
}

/* 键值清单 */
.page-faq .fix-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
}

.page-faq .fix-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
  padding: 0.9rem 0;
  border-top: var(--faq-divider);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .fix-list li:last-child {
  border-bottom: var(--faq-divider);
}

.page-faq .fix-list__k {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

/* 状态词定义列表 */
.page-faq .term-list {
  margin: 1.25rem 0 0;
  padding: 0;
}

.page-faq .term {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.35rem;
  padding: 1rem 0;
  border-top: var(--faq-divider);
}

.page-faq .term:last-child {
  border-bottom: var(--faq-divider);
}

.page-faq .term__key {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
  cursor: help;
}

.page-faq .term__val {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .term__where {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  opacity: 0.55;
  transition: opacity 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .term:hover .term__where,
.page-faq .term:focus-within .term__where {
  opacity: 1;
  color: var(--neon);
}

/* 联络 */
.page-faq .faq-contact__lede {
  max-width: 44em;
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-contact .fix-list li {
  color: var(--text);
}

.page-faq .faq-ending {
  margin: 1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-faq .faq-index {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-card {
    padding: 1.15rem 1.25rem;
    border-right: var(--faq-divider);
  }

  .page-faq .faq-card:nth-child(2n) {
    border-right: 0;
  }

  .page-faq .faq-index > .faq-card:nth-child(2n-1) {
    padding-left: 0;
  }

  .page-faq .faq-index > .faq-card:nth-child(2n) {
    padding-right: 0;
  }

  .page-faq .term {
    grid-template-columns: 9.5rem 1fr;
    gap: 0 1.5rem;
  }

  .page-faq .fix-list li {
    grid-template-columns: 7.5rem 1fr;
    gap: 1.25rem;
    align-items: baseline;
  }

  .page-faq .type-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .type {
    padding: 1.15rem 1.25rem;
    border-right: var(--faq-divider);
  }

  .page-faq .type:last-child {
    border-right: 0;
  }

  .page-faq .type:first-child {
    padding-left: 0;
  }

  .page-faq .type:last-child {
    padding-right: 0;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-brief {
    margin-top: 0.35rem;
    padding-top: 0;
    padding-left: 1.5rem;
    border-top: 0;
    border-left: 1px solid var(--brass);
  }

  .page-faq .faq-aside {
    margin-top: 0;
    padding-left: 1.25rem;
    border-left: var(--faq-divider);
  }

  .page-faq .path-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .path {
    padding: 1.25rem 1.4rem;
    border-right: var(--faq-divider);
  }

  .page-faq .path:last-child {
    border-right: 0;
  }

  .page-faq .path:first-child {
    padding-left: 0;
  }

  .page-faq .path:last-child {
    padding-right: 0;
  }

  .page-faq .step {
    gap: 0 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-brief__list a,
  .page-faq .filter-btn,
  .page-faq .term__where {
    transition: none;
  }
}
<<<END>>>