.page-faq {
  --faq-hair: rgba(74, 98, 136, 0.55);
  --faq-paper-rule: rgba(20, 33, 58, 0.16);
  --faq-teal-ink: #0E7C62;
  --faq-shadow: 0 26px 60px -46px rgba(0, 0, 0, 0.92);
  display: block;
}

/* ---------- 页首 ---------- */
.page-faq .faq-crumb {
  margin-bottom: clamp(22px, 3.5vw, 36px);
}

.page-faq .faq-open {
  padding: calc(var(--nav-h) + clamp(26px, 6vw, 68px)) 0 clamp(22px, 3.6vw, 38px);
}

.page-faq .faq-open__head {
  max-width: 64rem;
}

.page-faq .faq-open__head .index-label {
  color: var(--teal);
  margin: 0 0 clamp(14px, 2vw, 20px);
}

.page-faq .faq-open__head .display {
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--text-hi);
}

.page-faq .faq-open__head .lede {
  max-width: 42em;
  margin: 0 0 clamp(20px, 2.6vw, 28px);
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--text-mid);
}

.page-faq .faq-open__meta {
  list-style: none;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--faq-hair);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mid);
}

.page-faq .faq-open__meta .mono {
  color: var(--teal);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec {
  padding: clamp(32px, 5.5vw, 68px) 0;
}

.page-faq .faq-sec--last {
  padding-bottom: clamp(46px, 7vw, 90px);
}

.page-faq .sec-head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 12px;
  margin-bottom: clamp(22px, 3vw, 34px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .sec-head .exhibit-label {
  flex: 0 0 auto;
}

.page-faq .sec-head__rule {
  flex: 1 1 auto;
  min-width: 32px;
  height: 1px;
  background-image: repeating-linear-gradient(90deg, var(--hairline) 0 2px, transparent 2px 9px);
}

.page-faq .split {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .split__aside .display,
.page-faq .qa-side .display {
  margin: 0 0 16px;
  color: var(--text-hi);
}

.page-faq .split__aside .prose,
.page-faq .qa-side .prose {
  margin: 0 0 26px;
  max-width: 38em;
  color: var(--text-mid);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 自查表 ---------- */
.page-faq .check-paper {
  background: var(--paper);
  color: var(--text-on-paper);
  border: 1px solid rgba(20, 33, 58, 0.14);
  box-shadow: var(--faq-shadow);
  padding: clamp(18px, 2.6vw, 30px);
}

.page-faq .check-paper__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-paper-rule);
}

.page-faq .check-paper__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-on-paper);
}

.page-faq .check-paper__note {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(20, 33, 58, 0.62);
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step-row {
  margin: 0;
}

.page-faq .step-row__label {
  display: grid;
  grid-template-columns: 22px 30px minmax(0, 1fr);
  gap: 0 10px;
  align-items: start;
  padding: 14px 8px 14px 2px;
  border-bottom: 1px solid var(--faq-paper-rule);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.page-faq .step-row:last-child .step-row__label {
  border-bottom: 0;
}

.page-faq .step-row__label:hover {
  background: rgba(20, 33, 58, 0.05);
}

.page-faq .step-row__box {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--faq-teal-ink);
  cursor: pointer;
}

.page-faq .step-row__box:focus-visible {
  outline: 2px solid var(--teal-deep);
  outline-offset: 2px;
}

.page-faq .step-row__no {
  padding-top: 3px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(20, 33, 58, 0.55);
}

.page-faq .step-row__body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-faq .step-row__do {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-on-paper);
}

.page-faq .step-row__miss {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(20, 33, 58, 0.68);
}

.page-faq .step-row__label:has(.step-row__box:checked) {
  background: rgba(46, 211, 166, 0.16);
}

.page-faq .step-row__label:has(.step-row__box:checked) .step-row__no {
  color: var(--faq-teal-ink);
}

.page-faq .step-row__label:has(.step-row__box:checked) .step-row__do {
  color: rgba(20, 33, 58, 0.68);
}

.page-faq .check-paper__foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-paper-rule);
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(20, 33, 58, 0.72);
}

.page-faq .split__aside .figure {
  margin: 0;
}

/* ---------- 症状标签 ---------- */
.page-faq .symptom-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.page-faq .symptom-tab {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--faq-hair);
  border-radius: 2px;
  background: transparent;
  color: var(--text-mid);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .symptom-tab:hover,
.page-faq .symptom-tab:focus-visible {
  color: var(--text-hi);
  border-color: var(--teal-a56);
  background: var(--teal-a08);
}

.page-faq .symptom-tab__no {
  font-size: 11px;
  color: var(--teal);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--nav-h) + 26px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 4.4vw, 52px);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-hi);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-faq .faq-group__rule {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-mid);
}

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

.page-faq .faq__item:last-child {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq__trigger {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 6px 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-hi);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

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

.page-faq .faq__trigger::marker {
  content: "";
}

.page-faq .faq__trigger:hover {
  color: var(--teal);
  background: var(--paper-a06);
  padding-left: 8px;
}

.page-faq .faq__trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-faq .faq__mark {
  flex: 0 0 auto;
  width: 14px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-mid);
}

.page-faq .faq__mark::before {
  content: "＋";
}

.page-faq .faq__item[open] .faq__mark {
  color: var(--teal);
}

.page-faq .faq__item[open] .faq__mark::before {
  content: "－";
}

.page-faq .faq__panel {
  margin: 0 0 16px;
  padding: 16px 18px;
  border-left: 2px solid var(--teal);
  background: var(--paper);
  color: var(--text-on-paper);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq__panel p {
  margin: 0;
  max-width: 42em;
}

/* ---------- 等宽关键串 ---------- */
.page-faq .fieldcode {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 6px;
  border-radius: 2px;
  background: rgba(20, 33, 58, 0.1);
  color: inherit;
  word-break: break-all;
}

/* ---------- 分步排查 ---------- */
.page-faq .triage {
  display: grid;
  gap: clamp(24px, 3.4vw, 38px);
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-faq .triage__item {
  position: relative;
  padding-left: clamp(18px, 2.4vw, 30px);
  border-left: 1px solid var(--faq-hair);
}

.page-faq .triage__item::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
}

.page-faq .triage__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 500;
  color: var(--text-hi);
}

.page-faq .triage__hint {
  margin: 0;
  max-width: 38em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-mid);
}

.page-faq .triage__steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .triage__step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-faq .triage__step-no {
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-faq .triage__figure {
  margin: 0;
}

/* ---------- 不适用范围 ---------- */
.page-faq .scope__panel {
  border: 1px solid var(--faq-hair);
  border-top: 2px solid var(--amber-deep);
  background: linear-gradient(180deg, rgba(255, 180, 77, 0.06), transparent 44%), var(--ink-800);
  padding: clamp(22px, 3.4vw, 42px);
}

.page-faq .scope__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--text-hi);
}

.page-faq .scope__lead {
  margin: 0 0 24px;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-faq .scope__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .scope__item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mid);
}

.page-faq .scope__item::before {
  content: "×";
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--amber);
}

.page-faq .scope__foot {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-hair);
  max-width: 46em;
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-mid);
}

.page-faq .scope__foot a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-a56);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-faq .step-row__label {
    grid-template-columns: 20px 26px minmax(0, 1fr);
    gap: 0 8px;
  }

  .page-faq .triage__step {
    grid-template-columns: 26px minmax(0, 1fr);
  }

  .page-faq .faq__trigger:hover {
    padding-left: 0;
  }
}

@media (min-width: 960px) {
  .page-faq .split--check {
    grid-template-columns: minmax(0, 0.66fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .split--qa {
    grid-template-columns: minmax(0, 0.36fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .split--triage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
    align-items: start;
  }

  .page-faq .qa-side {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
  }

  .page-faq .symptom-tabs {
    flex-direction: column;
    align-items: stretch;
    margin-top: 6px;
  }

  .page-faq .symptom-tab {
    justify-content: flex-start;
  }

  .page-faq .qa-body {
    padding-left: clamp(8px, 2vw, 26px);
  }
}

@media (min-width: 720px) {
  .page-faq .scope__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .symptom-tab,
  .page-faq .faq__trigger,
  .page-faq .step-row__label,
  .page-faq .scope__foot a {
    transition: none;
  }

  .page-faq .faq__trigger:hover {
    padding-left: 0;
  }
}