.page-faq {
  font-family: var(--ax-font-sans);
  color: var(--ax-text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 52px) 0 clamp(18px, 2.5vw, 30px);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-size: clamp(34px, 5.6vw, 62px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.05;
  color: var(--ax-ink);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 42em;
  font-family: var(--ax-font-serif);
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.85;
  color: var(--ax-slate);
}

.page-faq .faq-chiprow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--ax-line);
  border-radius: var(--ax-radius-pill);
  background: var(--ax-white);
  color: var(--ax-ink);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 160ms var(--ax-ease), color 160ms var(--ax-ease);
}

.page-faq .faq-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ax-slate-soft);
  transition: background-color 160ms var(--ax-ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--ax-ink);
  color: var(--ax-ink-deep);
}

.page-faq .faq-chip:hover::before,
.page-faq .faq-chip:focus-visible::before {
  background: var(--ax-ink-mid);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-nav {
  border-top: 2px solid var(--ax-ink);
  padding-top: 14px;
}

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

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

.page-faq .faq-nav__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(62, 90, 107, 0.16);
  color: var(--ax-slate);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 160ms var(--ax-ease), border-color 160ms var(--ax-ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--ax-ink);
  border-bottom-color: var(--ax-ink);
}

.page-faq .faq-nav__no {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ax-slate-mid);
  transition: color 160ms var(--ax-ease);
}

.page-faq .faq-nav__link:hover .faq-nav__no {
  color: var(--ax-ink-mid);
}

.page-faq .faq-nav__note {
  margin: 18px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--ax-slate-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ax-slate-mid);
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-block {
  padding-top: clamp(18px, 2.6vw, 30px);
  border-top: 1px solid var(--ax-line);
  margin-bottom: clamp(30px, 4.5vw, 56px);
  scroll-margin-top: 88px;
}

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

.page-faq .faq-block:target {
  border-top-color: var(--ax-amber);
}

.page-faq .faq-block:target .faq-block__no {
  background: var(--ax-amber);
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 14px;
  align-items: center;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-block__no {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  line-height: 1;
  padding: 6px 9px;
  border-radius: var(--ax-radius-sm);
  color: var(--ax-white);
  background: var(--ax-ink-deep);
  transition: background-color 160ms var(--ax-ease);
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--ax-ink);
}

.page-faq .faq-block__desc {
  grid-column: 1 / -1;
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ax-slate);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(62, 90, 107, 0.16);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: center;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--ax-ink-mid);
  outline-offset: 3px;
  border-radius: var(--ax-radius-sm);
}

.page-faq .faq-item__no {
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ax-slate-mid);
}

.page-faq .faq-item__text {
  font-size: clamp(16px, 1.5vw, 17.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--ax-ink);
  transition: color 160ms var(--ax-ease);
}

.page-faq .faq-item__q:hover .faq-item__text {
  color: var(--ax-ink-mid);
}

.page-faq .faq-item__mark {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--ax-slate);
  border-radius: 2px;
  transition: transform 200ms var(--ax-ease), opacity 200ms var(--ax-ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 0 16px;
  padding: 14px 18px;
  background: rgba(246, 243, 236, 0.92);
  border-left: 2px solid var(--ax-slate-soft);
  border-radius: 0 var(--ax-radius-md) var(--ax-radius-md) 0;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-reveal 200ms var(--ax-ease) both;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ax-slate);
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ax-line);
  border-radius: var(--ax-radius-lg);
  background: var(--ax-white);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--ax-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  line-height: 1.7;
  color: var(--ax-slate-mid);
}

.page-faq .faq-figure--wide {
  margin-bottom: clamp(28px, 4vw, 48px);
  padding-top: clamp(8px, 1.5vw, 16px);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(14px, 2vw, 22px);
}

.page-faq .faq-support__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--ax-line);
  border-radius: var(--ax-radius-md);
  background: var(--ax-white);
}

.page-faq .faq-support__key {
  margin: 0;
  font-family: var(--ax-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ax-slate-mid);
}

.page-faq .faq-support__val {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ax-ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__val a {
  color: var(--ax-ink);
  text-decoration: none;
  border-bottom: 1px dashed var(--ax-slate-mid);
  transition: border-bottom-color 140ms var(--ax-ease);
}

.page-faq .faq-support__val a:hover {
  border-bottom-style: solid;
  border-bottom-color: var(--ax-ink);
}

.page-faq .faq-support__hint {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ax-slate-mid);
}

.page-faq .faq-support__card .ax-btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-support {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 236px) minmax(0, 1fr);
    gap: clamp(36px, 4.5vw, 80px);
  }

  .page-faq .faq-nav {
    position: sticky;
    top: clamp(80px, 10vh, 120px);
    align-self: start;
  }

  .page-faq .faq-chiprow {
    display: none;
  }

  .page-faq .faq-item__q {
    grid-template-columns: 52px minmax(0, 1fr) 18px;
  }

  .page-faq .faq-item__a {
    margin-left: 64px;
    padding: 16px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-chip,
  .page-faq .faq-chip::before,
  .page-faq .faq-nav__link,
  .page-faq .faq-nav__no,
  .page-faq .faq-item__text,
  .page-faq .faq-block__no {
    transition: none;
  }
}