.page-faq {
  display: block;
  padding-block: clamp(22px, 4vw, 44px) clamp(64px, 9vw, 112px);
  background:
    radial-gradient(115% 52% at 4% -6%, rgba(43, 240, 208, 0.09), transparent 62%),
    radial-gradient(80% 44% at 104% 6%, rgba(226, 58, 70, 0.07), transparent 66%);
}

/* ---------- 页首 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--line-leaf);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.4vw, 60px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 42em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-muted);
}

.page-faq .faq-hero__side {
  display: grid;
  gap: clamp(16px, 2vw, 22px);
  align-content: start;
}

.page-faq .faq-stat {
  margin: 0;
  border: 1px solid var(--line-leaf);
  background: var(--glass-panel);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.page-faq .faq-stat__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line-leaf);
}

.page-faq .faq-stat__item:last-child {
  border-bottom: 0;
}

.page-faq .faq-stat dt {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--accent-cyan-soft);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--line-leaf);
  font-size: 13px;
  line-height: 1.4;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--dur-1) var(--ease), background var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--bg-abyss);
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
    align-items: start;
  }
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-block {
  padding-top: clamp(38px, 6vw, 76px);
  scroll-margin-top: clamp(16px, 3vw, 40px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
  }
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-stack {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border-left: 3px solid var(--line-leaf);
  background: var(--bg-field);
  transition: border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--accent-cyan);
  background: linear-gradient(90deg, rgba(43, 240, 208, 0.08), transparent 64%), var(--bg-field);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  outline-offset: -2px;
}

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

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

.page-faq .qa__plain {
  flex: none;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
}

.page-faq .qa__verdict {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  overflow-wrap: break-word;
  color: var(--text-primary);
}

.page-faq .qa__sign {
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1.5px;
  background: var(--accent-cyan);
  transform: translateY(-50%);
}

.page-faq .qa__sign::after {
  transform: translateY(-50%) rotate(90deg);
  transition: transform var(--dur-1) var(--ease);
}

.page-faq .qa[open] .qa__sign::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .qa__body {
  padding: 4px 18px 18px;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

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

.page-faq .qa__tag {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent-cyan-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line-leaf);
  background: var(--bg-field);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .figure-frame__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-leaf);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-figure--inline {
  margin-top: clamp(20px, 3vw, 34px);
  max-width: 780px;
}

/* ---------- 口径对比 ---------- */
.page-faq .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .scope-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line-leaf);
  background: var(--bg-field);
}

.page-faq .scope-card[hidden] {
  display: none;
}

.page-faq .scope-card__head {
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-faq .scope-card__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-faq .scope-card__rows {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-leaf);
}

.page-faq .scope-card__rows li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-leaf);
}

.page-faq .scope-card__rows li:last-child {
  border-bottom: 0;
}

.page-faq .scope-card__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
}

.page-faq .scope-card__val {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-faq .filter-status {
  min-height: 1.2em;
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

@media (min-width: 560px) {
  .page-faq .scope-card__rows li {
    grid-template-columns: 8.5em minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 860px) {
  .page-faq .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 区间读法 ---------- */
.page-faq .faq-note {
  margin-bottom: clamp(20px, 3vw, 32px);
  padding: 14px 18px;
  border-left: 3px solid var(--accent-cyan);
  background: linear-gradient(90deg, rgba(43, 240, 208, 0.11), transparent 70%);
}

.page-faq .faq-note__verdict {
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.72;
  color: var(--text-primary);
}

.page-faq .grain-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2vw, 20px);
}

.page-faq .grain-item {
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line-leaf);
  background: var(--glass-panel);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.page-faq .grain-item__idx {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-gold);
}

.page-faq .grain-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
}

.page-faq .grain-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-muted);
}

@media (min-width: 780px) {
  .page-faq .grain-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 提示条 ---------- */
.page-faq .faq-alert {
  margin-top: clamp(20px, 3vw, 30px);
  padding: 14px 18px;
  border: 1px dashed var(--line-leaf);
  background: var(--bg-field);
}

.page-faq .faq-alert p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .faq-alert strong {
  color: var(--accent-cyan-soft);
}

.page-faq .faq-alert--red {
  border-color: rgba(226, 58, 70, 0.52);
}

.page-faq .faq-alert--red strong {
  color: var(--accent-red);
}

/* ---------- 指标定义 ---------- */
.page-faq .metric-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-faq .metric-panel {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line-leaf);
  border-top: 2px solid var(--line-leaf);
  background: var(--bg-field);
}

.page-faq .metric-panel--cyan {
  border-top-color: var(--accent-cyan);
}

.page-faq .metric-panel--gold {
  border-top-color: var(--accent-gold);
}

.page-faq .metric-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 800;
  color: var(--text-primary);
}

.page-faq .metric-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .metric-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-leaf);
}

.page-faq .metric-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .metric-list__idx {
  grid-row: span 2;
  padding-top: 3px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-cyan);
}

.page-faq .metric-list__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-faq .metric-list p {
  grid-column: 2;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-muted);
}

@media (min-width: 880px) {
  .page-faq .metric-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 反馈纠错 ---------- */
.page-faq .report-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.8vw, 18px);
  counter-reset: step;
}

.page-faq .report-step {
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line-leaf);
  background: var(--bg-field);
  counter-increment: step;
}

.page-faq .report-step::before {
  content: "0" counter(step);
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-gold);
}

.page-faq .report-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
}

.page-faq .report-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .report-step a,
.page-faq .faq-crosslink a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .report-step a:hover,
.page-faq .faq-crosslink a:hover {
  color: var(--accent-cyan-soft);
}

@media (min-width: 760px) {
  .page-faq .report-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-faq .report-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 关联说明 ---------- */
.page-faq .faq-crosslink {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-leaf);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ---------- 窄屏收紧 ---------- */
@media (max-width: 460px) {
  .page-faq .qa__summary {
    padding: 13px 14px;
    gap: 10px;
  }

  .page-faq .qa__body {
    padding: 4px 14px 16px;
  }

  .page-faq .faq-figure--inline {
    max-width: 100%;
  }
}