.page-faq {
  --faq-gap: clamp(14px, 2.2vw, 22px);
  --faq-rail-w: 236px;
  background: var(--ink-950);
  color: var(--text-100);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* 面包屑 */
.page-faq .crumb {
  padding-top: clamp(14px, 2vw, 22px);
  font-size: var(--fs-note);
  line-height: var(--lh-note);
}

.page-faq .crumb a {
  color: var(--blue-300);
  text-decoration: none;
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  text-decoration: underline;
}

.page-faq .crumb .crumb__sep {
  margin-inline: 0.55em;
  color: var(--grid-700);
}

.page-faq .crumb [aria-current="page"] {
  color: var(--text-400);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 32px);
  padding-block: clamp(26px, 4.6vw, 52px) clamp(28px, 4.6vw, 56px);
  border-bottom: 1px solid var(--grid-700);
}

.page-faq .faq-hero h1 {
  margin: 0.38em 0 0;
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--text-100);
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 1.05em 0 0;
  color: var(--text-400);
  font-size: 16px;
  line-height: var(--lh-body);
}

.page-faq .faq-hero__lede a {
  color: var(--blue-300);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-hero__lede a:hover,
.page-faq .faq-hero__lede a:focus-visible {
  color: var(--cyan-400);
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--grid-700);
  border-left: 3px solid var(--blue-600);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--ink-850), var(--ink-900));
}

.page-faq .faq-hero__stats > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-faq .faq-hero__stats dt {
  color: var(--text-400);
  font-size: var(--fs-note);
  line-height: var(--lh-note);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__stats dd {
  margin: 0;
  color: var(--blue-300);
  font-size: 18px;
  font-weight: 700;
}

/* 分诊 */
.page-faq .faq-triage {
  padding-block: clamp(32px, 5.6vw, 66px) clamp(20px, 3.6vw, 40px);
}

.page-faq .faq-triage__fig {
  margin: clamp(18px, 3vw, 30px) 0 0;
}

.page-faq .faq-triage__fig .figure__frame img,
.page-faq .faq-migrate-fig .figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .triage-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: var(--faq-gap);
}

.page-faq .triage-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 16px;
  border: 1px solid var(--grid-700);
  border-radius: var(--radius);
  background: var(--ink-850);
  color: var(--text-100);
  text-decoration: none;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .triage-card:hover,
.page-faq .triage-card:focus-visible {
  border-color: var(--blue-600);
  background: var(--ink-900);
  transform: translateY(-2px);
}

.page-faq .triage-card__num {
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--blue-300);
}

.page-faq .triage-card__name {
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-faq .triage-card__desc {
  font-size: var(--fs-note);
  line-height: var(--lh-note);
  color: var(--text-400);
}

.page-faq .triage-card__count {
  margin-top: auto;
  padding-top: 8px;
  font-size: var(--fs-note);
  color: var(--cyan-400);
}

/* 主体：索引 + 问答流 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 44px);
  padding-top: clamp(18px, 3vw, 32px);
  border-top: 1px solid var(--grid-700);
}

.page-faq .faq-rail {
  padding: 16px 14px;
  border: 1px solid var(--grid-700);
  border-radius: var(--radius);
  background: var(--ink-850);
}

.page-faq .faq-rail__h {
  margin: 0 0 10px;
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--text-400);
  font-size: var(--fs-note);
  line-height: var(--lh-note);
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--text-100);
  border-left-color: var(--blue-600);
  background: rgba(47, 107, 255, 0.09);
}

.page-faq .faq-rail__list .mono {
  flex: none;
  color: var(--blue-300);
}

.page-faq .faq-stream {
  display: grid;
  gap: clamp(32px, 5vw, 58px);
  min-width: 0;
}

/* 问答分区 */
.page-faq .faq-block {
  scroll-margin-top: 118px;
}

.page-faq .faq-block__head {
  padding: 0 0 14px 14px;
  border-left: 2px solid var(--blue-600);
  border-bottom: 1px solid var(--grid-700);
}

.page-faq .faq-block__head h2 {
  margin: 0.32em 0 0;
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--text-100);
}

.page-faq .faq-block__lede {
  max-width: 68ch;
  margin: 0.75em 0 0;
  color: var(--text-400);
  font-size: 15.5px;
  line-height: var(--lh-body);
}

.page-faq .faq-list {
  margin-top: 4px;
}

.page-faq .qa {
  border-bottom: 1px solid var(--grid-700);
}

.page-faq .qa > summary {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 15px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--text-100);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.58;
  transition: color 160ms var(--ease);
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--blue-300);
}

.page-faq .qa > summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  color: var(--text-400);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  transition: color 160ms var(--ease), transform 160ms var(--ease);
}

.page-faq .qa[open] > summary::after {
  content: "\2212";
  color: var(--blue-600);
}

.page-faq .qa__id {
  flex: none;
  color: var(--blue-300);
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  font-weight: 500;
  letter-spacing: 0.05em;
}

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

.page-faq .qa__a {
  max-width: 74ch;
  padding: 0 4px 20px 0;
  color: var(--text-400);
  font-size: 15.5px;
  line-height: var(--lh-body);
}

.page-faq .qa__a p {
  margin: 0 0 0.85em;
}

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

.page-faq .qa__a ol,
.page-faq .qa__a ul {
  margin: 0.85em 0;
  padding-left: 1.35em;
}

.page-faq .qa__a li {
  margin-bottom: 0.5em;
}

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

.page-faq .qa__a strong {
  color: var(--text-100);
  font-weight: 700;
}

.page-faq .qa__a .mono {
  color: var(--blue-300);
  font-size: 0.92em;
  overflow-wrap: anywhere;
}

.page-faq .qa__a a {
  color: var(--blue-300);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--cyan-400);
}

/* 地址片段比对块 */
.page-faq .addr-check {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px solid var(--grid-700);
  border-left: 3px solid var(--cyan-400);
  border-radius: var(--radius);
  background: var(--ink-900);
}

.page-faq .addr-check__k {
  margin: 0 0 8px;
  color: var(--text-400);
  font-size: var(--fs-note);
  line-height: var(--lh-note);
  letter-spacing: 0.04em;
}

.page-faq .addr-check__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .addr-check__row .addr {
  color: var(--text-100);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq [data-copy] {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
}

.page-faq [data-copy][data-state="copied"] {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

/* 换机流程图 */
.page-faq .faq-migrate-fig {
  margin: clamp(18px, 3vw, 28px) 0 0;
}

.page-faq .faq-migrate-fig .figure__cap {
  color: var(--text-400);
  font-size: var(--fs-note);
}

/* 安全红线区块 */
.page-faq .faq-block--safety {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(255, 107, 61, 0.44);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 107, 61, 0.075), rgba(255, 107, 61, 0) 46%),
    var(--ink-850);
}

.page-faq .faq-block--safety .faq-block__head {
  border-left-color: var(--alert-500);
  border-bottom-color: rgba(255, 107, 61, 0.3);
}

.page-faq .faq-block--safety .qa > summary::after {
  color: rgba(255, 107, 61, 0.85);
}

.page-faq .faq-block--safety .qa[open] > summary::after {
  color: var(--alert-500);
}

/* 滚动显现 */
.page-faq [data-reveal] {
  transition: opacity 340ms var(--ease), transform 340ms var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal],
  .page-faq .triage-card,
  .page-faq .qa > summary,
  .page-faq .qa > summary::after,
  .page-faq .faq-rail__list a {
    transition-duration: 0.01ms;
    transform: none;
  }
}

/* 中等宽度：分诊拼贴 */
@media (min-width: 760px) {
  .page-faq .triage-map {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    grid-auto-rows: minmax(118px, auto);
  }

  .page-faq .triage-card:nth-child(1) {
    grid-column: 1 / 5;
    grid-row: 1 / 3;
  }

  .page-faq .triage-card:nth-child(2) {
    grid-column: 5 / 7;
    grid-row: 1 / 2;
  }

  .page-faq .triage-card:nth-child(3) {
    grid-column: 5 / 7;
    grid-row: 2 / 3;
  }

  .page-faq .triage-card:nth-child(4) {
    grid-column: 1 / 4;
    grid-row: 3 / 4;
  }

  .page-faq .triage-card:nth-child(5) {
    grid-column: 4 / 7;
    grid-row: 3 / 4;
    border-color: rgba(255, 107, 61, 0.4);
  }

  .page-faq .triage-card:nth-child(5):hover,
  .page-faq .triage-card:nth-child(5):focus-visible {
    border-color: var(--alert-500);
  }
}

/* 桌面：非对称图文与粘性索引 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(210px, 3fr);
    align-items: end;
    gap: clamp(26px, 4vw, 56px);
  }

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }

  .page-faq .qa > summary {
    font-size: 17px;
  }

  .page-faq .qa__a {
    font-size: 16px;
  }

  .page-faq .faq-block__lede {
    font-size: 16px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
    gap: clamp(30px, 4vw, 58px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
  }
}
<<<END>>>