.page-faq {
  --faq-gap: clamp(32px, 6vw, 72px);
  --faq-accent: var(--signal);
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: 2px solid var(--line);
  padding-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero__inner {
  padding-bottom: clamp(26px, 4vw, 46px);
}

.page-faq .faq-hero .crumb {
  margin-bottom: 20px;
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-faq .faq-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 18ch;
}

.page-faq .faq-lead {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 2px solid var(--line);
  max-width: 660px;
}

.page-faq .faq-facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 13px 15px;
  background: var(--panel);
}

.page-faq .faq-facts .stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--signal);
}

.page-faq .faq-facts .stat-label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  margin: 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-left: 0;
  border-right: 0;
  border-bottom: 0;
}

/* ---------- 关键词工具条 ---------- */
.page-faq .faq-toolbar {
  background: var(--ink-2);
  border-bottom: 2px solid var(--line);
  padding: 14px 0;
}

.page-faq .faq-toolbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
}

.page-faq .faq-toolbar__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--blue);
}

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

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 13px;
  font-size: 13px;
  line-height: 1.2;
  text-decoration: none;
  color: var(--white);
  background: var(--panel);
  border: 2px solid var(--line);
  transition: border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  transform: translateY(-2px);
}

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

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: clamp(32px, 6vw, 64px);
  padding-bottom: clamp(24px, 4vw, 44px);
}

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

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  --faq-accent: var(--signal);
}

.page-faq #group-axis {
  --faq-accent: var(--blue);
}

.page-faq #group-fav {
  --faq-accent: var(--signal);
}

.page-faq #group-update {
  --faq-accent: var(--warm);
}

.page-faq #group-contact {
  --faq-accent: var(--blue);
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-gap);
  padding-top: var(--faq-gap);
  border-top: 2px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(36px, 6vw, 58px);
  font-weight: 700;
  line-height: .88;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--faq-accent);
  opacity: .75;
}

.page-faq .faq-group__meta {
  min-width: 0;
  padding-top: 4px;
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__sub {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  padding: 0;
  background: var(--panel);
  border: 2px solid var(--line);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--faq-accent);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .22s ease;
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item:hover,
.page-faq .faq-item:focus-within {
  border-color: var(--faq-accent);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.page-faq .faq-q {
  display: block;
  position: relative;
  list-style: none;
  cursor: pointer;
  margin: 0;
  padding: 16px 52px 16px 20px;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
  transition: color .18s ease;
}

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

.page-faq .faq-q::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--faq-accent);
  transition: transform .22s ease, opacity .22s ease;
}

.page-faq .faq-item[open] .faq-q::after {
  content: "−";
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -4px;
}

.page-faq .faq-a {
  padding: 14px 20px 18px;
  border-top: 2px solid var(--line);
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-a .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--faq-accent);
  word-break: break-word;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: none; }
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-open .22s ease-out;
}

/* ---------- 右侧窄栏 ---------- */
.page-faq .faq-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-faq .faq-aside__media {
  margin: 0;
  width: 100%;
}

.page-faq .faq-side-card {
  padding: 18px;
  background: var(--ink-2);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--blue);
}

.page-faq .faq-side-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-side-list a {
  display: block;
  padding: 11px 13px;
  font-size: 14px;
  line-height: 1.55;
  text-decoration: none;
  color: var(--white);
  background: var(--panel);
  border-left: 3px solid transparent;
  transition: border-color .18s ease, color .18s ease;
}

.page-faq .faq-side-list a:hover,
.page-faq .faq-side-list a:focus-visible {
  border-left-color: var(--signal);
  color: var(--signal);
}

.page-faq .faq-side-list a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- 尾部入口 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  padding-bottom: clamp(48px, 8vw, 96px);
  border-top: 2px solid var(--line);
  padding-top: clamp(24px, 4vw, 36px);
}

.page-faq .faq-cta__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing: -0.01em;
  color: var(--white);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__media {
    aspect-ratio: 21 / 8;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-col {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-aside {
    grid-column: 2;
    grid-row: 1;
    align-self: start;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-group__head {
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-q::after,
  .page-faq .faq-chip,
  .page-faq .faq-side-list a {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }
}