.page-faq {
  --faq-index-w: 232px;
  --faq-gap: clamp(24px, 3.4vw, 48px);
  --faq-inner: clamp(16px, 2.2vw, 26px);
  position: relative;
  padding-block: clamp(40px, 5.5vw, 84px) clamp(72px, 9vw, 140px);
}

.page-faq .xg-breadcrumb {
  margin-bottom: clamp(24px, 3vw, 40px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-lead {
  display: grid;
  gap: 16px;
  max-width: 940px;
  margin-bottom: clamp(44px, 6vw, 88px);
}

.page-faq .faq-lead__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}

.page-faq .faq-lead__body {
  margin: 0;
  max-width: 40ch;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-lead__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 6px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
}

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

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(36, 19, 68, 0.5);
  color: var(--text);
  font-size: 13px;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), background 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--lime);
  background: rgba(184, 255, 63, 0.1);
  transform: translateY(-2px);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(44px, 5.5vw, 80px);
  scroll-margin-top: 110px;
}

.page-faq .faq-group:first-child {
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(22px, 3vw, 36px);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  transition: border-color 260ms var(--ease);
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: rgba(184, 255, 63, 0.6);
}

.page-faq .faq-group__no {
  color: var(--lime);
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 52ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(36, 19, 68, 0.42);
  overflow: hidden;
  transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease), transform 220ms var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item:hover {
  border-color: rgba(184, 255, 63, 0.35);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: rgba(184, 255, 63, 0.45);
  box-shadow: var(--shadow-deep);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(16px, 2.1vw, 24px) var(--faq-inner);
  cursor: pointer;
  list-style: none;
  transition: background 200ms var(--ease);
}

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

.page-faq .faq-q:hover {
  background: rgba(184, 255, 63, 0.05);
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
}

.page-faq .faq-q__mark::before {
  width: 9px;
  height: 1px;
}

.page-faq .faq-q__mark::after {
  width: 1px;
  height: 9px;
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

.page-faq .faq-item[open] .faq-q__mark {
  border-color: var(--lime);
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

/* ---------- 答案：浅色纸层 ---------- */
.page-faq .faq-a {
  padding: clamp(18px, 2.4vw, 28px) var(--faq-inner);
  background: var(--paper);
  border-top: 1px solid var(--paper-line);
  color: var(--text-on-paper);
  animation: faq-paper-in 300ms var(--ease) both;
}

@keyframes faq-paper-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-a p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-on-paper);
}

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

.page-faq .faq-a a {
  color: #3A1F73;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a__warn {
  padding: 12px 14px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 155, 69, 0.14);
  font-size: 0.9rem;
  color: #4A3A6E;
}

.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: 11px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-faq .faq-steps > li::before {
  content: "0" counter(faqstep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim-on-paper);
  padding-top: 4px;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: clamp(24px, 3vw, 40px) 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-figure--region {
  margin-top: clamp(28px, 3.4vw, 44px);
}

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

/* ---------- 地域读数带 ---------- */
.page-faq .faq-readout {
  display: grid;
  gap: 12px;
  margin: 20px 0 clamp(28px, 3.4vw, 44px);
  padding: 0;
  list-style: none;
}

.page-faq .faq-readout__item {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(36, 19, 68, 0.42);
}

.page-faq .faq-readout__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-readout__val {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-readout__hint {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 需要人工介入 ---------- */
.page-faq .faq-help {
  padding: clamp(26px, 3.4vw, 46px);
  border-radius: var(--radius);
}

.page-faq .faq-help .xg-h2 {
  margin: 10px 0 12px;
}

.page-faq .faq-help__lede {
  margin: 0 0 26px;
  max-width: 48ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-dim-on-paper);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 18px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__item {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--paper-line);
}

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

.page-faq .faq-help__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-dim-on-paper);
}

.page-faq .faq-help__val {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text-on-paper);
  word-break: break-word;
}

.page-faq .faq-help__hint {
  margin: 0;
  max-width: 56ch;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-dim-on-paper);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 100px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    width: 100%;
    padding: 11px 0 11px 16px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: none;
    font-size: 14px;
    white-space: normal;
    transition: border-color 180ms var(--ease), color 180ms var(--ease), padding-left 180ms var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--lime);
    background: none;
    padding-left: 22px;
    transform: none;
  }

  .page-faq .faq-readout {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-help__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-help__item {
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid var(--paper-line);
    padding-left: 20px;
  }

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

@media (min-width: 1200px) {
  .page-faq .faq-group--region {
    margin-inline: calc(-1 * clamp(0px, 4vw, 56px));
    padding-inline: clamp(0px, 4vw, 56px);
    border-inline: 1px solid transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .faq-q__mark {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}