.page-faq {
  --faq-rule: rgba(30, 45, 69, 0.9);
  --faq-legacy-rule: rgba(142, 42, 53, 0.6);
  --faq-glow: rgba(168, 255, 42, 0.09);
}

/* ---------- 引导区 ---------- */

.page-faq .faq-lead {
  padding-top: clamp(24px, 4vw, 56px);
}

.page-faq .faq-lead .breadcrumbs {
  margin-bottom: clamp(24px, 4vw, 48px);
}

.page-faq .faq-lead__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-faq .faq-lead__text {
  max-width: 680px;
}

.page-faq .faq-lead h1 {
  margin: 18px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .faq-lead__intro {
  margin: 22px 0 0;
  max-width: var(--read);
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.75;
  color: var(--text);
  opacity: 0.86;
}

.page-faq .faq-lead__text::after {
  content: "";
  display: block;
  width: 96px;
  height: 3px;
  margin-top: 32px;
  background: linear-gradient(90deg, var(--accent), var(--signal));
}

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

/* ---------- 索引带 ---------- */

.page-faq .faq-index-band {
  border-top: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-index-band .section__head {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-faq .faq-index__item {
  background: var(--ink);
  min-width: 0;
}

.page-faq .faq-index__item a {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 4px 14px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--text);
  border-left: 3px solid transparent;
  transition: background var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}

.page-faq .faq-index__item a:hover,
.page-faq .faq-index__item a:focus-visible {
  background: var(--faq-glow);
  border-left-color: var(--accent);
  outline: none;
}

.page-faq .faq-index__num {
  grid-row: 1 / 3;
  align-self: start;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.page-faq .faq-index__label {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-index__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 问答区块骨架 ---------- */

.page-faq .faq-block {
  padding-top: clamp(48px, 7vw, 96px);
  scroll-margin-top: 96px;
}

.page-faq .faq-block__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.page-faq .faq-block__head {
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  max-width: 560px;
}

.page-faq .faq-block--legacy .faq-block__head {
  border-left-color: var(--legacy);
}

.page-faq .faq-block h2 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 2.5vw, 34px);
  line-height: 1.24;
  color: var(--text);
}

.page-faq .faq-block__note {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

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

/* ---------- 手风琴 ---------- */

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

.page-faq .faq-block--legacy .faq-list {
  border-top-color: var(--faq-legacy-rule);
}

.page-faq .faq-list .expand {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-block--legacy .faq-list .expand {
  border-bottom-color: var(--faq-legacy-rule);
}

.page-faq .expand__trigger {
  width: 100%;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 4px;
  margin: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur-1) var(--ease);
}

.page-faq .expand__trigger:hover {
  color: var(--accent);
}

.page-faq .expand__trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.page-faq .expand__trigger[aria-expanded="true"] {
  color: var(--accent);
}

.page-faq .faq-block--legacy .expand__trigger:hover,
.page-faq .faq-block--legacy .expand__trigger[aria-expanded="true"] {
  color: var(--yellow);
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.page-faq .faq-block--legacy .faq-q__num {
  color: var(--yellow);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  position: relative;
  width: 15px;
  height: 15px;
  align-self: center;
  margin-left: 8px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}

.page-faq .faq-q__mark::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-q__mark::after {
  left: 50%;
  top: 0;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .expand__trigger[aria-expanded="true"] .faq-q__mark::before,
.page-faq .expand[data-open="true"] .faq-q__mark::before {
  background: var(--accent);
}

.page-faq .expand__trigger[aria-expanded="true"] .faq-q__mark::after,
.page-faq .expand[data-open="true"] .faq-q__mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-block--legacy .expand__trigger[aria-expanded="true"] .faq-q__mark::before,
.page-faq .faq-block--legacy .expand[data-open="true"] .faq-q__mark::before {
  background: var(--yellow);
}

.page-faq .expand__panel {
  overflow: hidden;
}

.page-faq .expand__inner {
  padding: 2px 4px 26px 42px;
  max-width: var(--read);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text);
  opacity: 0.88;
}

.page-faq .expand__inner p {
  margin: 0 0 12px;
}

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

.page-faq .expand__inner a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(var(--accent-rgb), 0.45);
}

.page-faq .expand__inner a:hover {
  border-bottom-color: var(--accent);
}

.page-faq .expand__inner strong {
  color: var(--accent-soft);
  font-weight: 600;
}

.page-faq .faq-block--legacy .expand__inner strong {
  color: var(--yellow);
}

/* ---------- 字段标签 ---------- */

.page-faq .faq-fields {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-fields li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--faq-rule);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-fields__k {
  color: var(--accent);
  font-weight: 700;
}

/* ---------- 数据核对区配图 ---------- */

.page-faq .faq-stats__figure {
  margin: 0 0 28px;
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-contact {
  display: grid;
  gap: 2px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
  margin-bottom: 32px;
}

.page-faq .faq-contact .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 16px 20px;
  background: var(--ink);
  min-width: 0;
}

.page-faq .faq-contact .contact-line__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-contact .contact-line__value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-more {
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-lead__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
  }
}

@media (min-width: 940px) {
  .page-faq .faq-block__inner {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-block__head {
    position: sticky;
    top: 96px;
  }

  .page-faq .expand__inner {
    padding-left: 46px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-block__inner {
    grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
    gap: 72px;
  }
}
</main>