.page-faq {
  background: var(--ink);
  color: var(--white);
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-inline: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 26px 44px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(255, 77, 28, 0.18), transparent 58%),
    radial-gradient(90% 80% at 100% 6%, rgba(0, 229, 255, 0.12), transparent 62%),
    var(--ink);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.2vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--gray);
  font-size: 1rem;
  line-height: 1.78;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 26, 51, 0.7);
  color: var(--white);
  font-size: 0.88rem;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--brand);
  background: rgba(255, 77, 28, 0.16);
}

.page-faq .faq-chip__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
}

.page-faq .faq-chip:nth-child(2) .faq-chip__dot { background: var(--cyan); }
.page-faq .faq-chip:nth-child(3) .faq-chip__dot { background: var(--gold); }
.page-faq .faq-chip:nth-child(4) .faq-chip__dot { background: var(--brand-soft); }
.page-faq .faq-chip:nth-child(5) .faq-chip__dot { background: var(--gray); }
.page-faq .faq-chip:nth-child(6) .faq-chip__dot { background: var(--brand); }

.page-faq .faq-hero__art {
  position: relative;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-faq .faq-hero__tag {
  position: absolute;
  top: -12px;
  left: 22px;
  z-index: 1;
  padding: 5px 12px;
  border: 1px solid rgba(255, 200, 87, 0.5);
  border-radius: 6px;
  background: var(--black);
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

/* ---------- 正文布局 ---------- */
.page-faq .faq-body {
  padding-block: 46px 74px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 34px;
}

.page-faq .faq-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-side-nav {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 26, 51, 0.55);
}

.page-faq .faq-side-nav__label {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

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

.page-faq .faq-side-nav__list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--gray);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-side-nav__list a:hover,
.page-faq .faq-side-nav__list a:focus-visible {
  color: var(--white);
  border-color: var(--brand);
  background: rgba(255, 77, 28, 0.14);
}

.page-faq .faq-livehint {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 26, 51, 0.95), rgba(2, 4, 10, 0.95));
  box-shadow: 5px 5px 0 rgba(27, 36, 64, 0.6);
}

.page-faq .faq-livehint__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--cyan);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
}

.page-faq .faq-livehint__pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.16);
}

.page-faq .faq-livehint__text {
  margin: 10px 0 16px;
  color: var(--gray);
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-faq .faq-livehint .btn {
  width: 100%;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: 58px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  grid-column: 1;
  font-family: var(--font-num);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__lead {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  max-width: 62ch;
  color: var(--gray);
  font-size: 0.94rem;
  line-height: 1.75;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(18, 26, 51, 0.92), rgba(8, 13, 26, 0.92));
  box-shadow: 5px 5px 0 rgba(27, 36, 64, 0.55);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.page-faq .faq-item[open] {
  border-color: rgba(255, 77, 28, 0.5);
  box-shadow: 5px 5px 0 rgba(255, 77, 28, 0.16);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-height: 44px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(255, 200, 87, 0.55);
  border-radius: 50%;
  color: var(--gold);
  transition: transform 0.22s ease, border-color 0.22s ease, color 0.22s ease;
}

.page-faq .faq-item__mark::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 5px;
  right: 5px;
  height: 2px;
  margin-top: -1px;
  border-radius: 2px;
  background: currentColor;
}

.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 5px;
  bottom: 5px;
  width: 2px;
  margin-left: -1px;
  border-radius: 2px;
  background: currentColor;
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
  border-color: var(--brand);
  color: var(--brand);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
  color: var(--gray);
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--white);
}

/* ---------- 索引跳转示意图 ---------- */
.page-faq .faq-route {
  margin: 0 0 22px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(2, 4, 10, 0.6);
}

.page-faq .faq-route svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-route__node {
  fill: var(--panel);
  stroke: var(--line);
  stroke-width: 1.4;
  transition: stroke 0.2s ease, fill 0.2s ease;
}

.page-faq .faq-route__node--end {
  fill: rgba(255, 77, 28, 0.14);
  stroke: rgba(255, 77, 28, 0.45);
}

.page-faq .faq-route__label {
  fill: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
}

.page-faq .faq-route__line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.6;
  stroke-dasharray: 5 5;
}

.page-faq .faq-route:hover .faq-route__node {
  stroke: var(--cyan);
}

.page-faq .faq-route:hover .faq-route__line {
  animation: faq-route-dash 1.4s linear infinite;
}

.page-faq .faq-route figcaption {
  margin-top: 12px;
  color: var(--gray);
  font-size: 0.85rem;
  line-height: 1.7;
}

@keyframes faq-route-dash {
  to { stroke-dashoffset: -20; }
}

/* ---------- 图文并排 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 22px;
}

.page-faq .faq-figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  margin: 0 auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  padding-inline: 6px;
  color: var(--gray);
  font-size: 0.84rem;
  line-height: 1.7;
}

/* ---------- 回到顶部 ---------- */
.page-faq .faq-backtop {
  margin: 46px 0 0;
}

.page-faq .faq-backtop a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--gray);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-backtop a::before {
  content: "↑";
  color: var(--brand);
  font-size: 1rem;
}

.page-faq .faq-backtop a:hover,
.page-faq .faq-backtop a:focus-visible {
  color: var(--white);
  border-color: var(--brand);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-wrap {
    padding-inline: 32px;
  }

  .page-faq .faq-hero {
    padding-block: 34px 56px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 20px 54px;
  }

  .page-faq .faq-route {
    padding: 22px;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: start;
    gap: 26px;
  }

  .page-faq .faq-livehint .btn {
    width: auto;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 52px;
  }

  .page-faq .faq-body {
    padding-block: 60px 96px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

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

  .page-faq .faq-side-nav__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-faq .faq-side-nav__list a {
    min-height: 44px;
    padding: 0 12px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 8px 8px 0;
  }

  .page-faq .faq-side-nav__list a:hover,
  .page-faq .faq-side-nav__list a:focus-visible {
    border-left-color: var(--brand);
    background: rgba(255, 77, 28, 0.12);
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 68px;
  }
}

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

  .page-faq .faq-item__mark,
  .page-faq .faq-chip,
  .page-faq .faq-backtop a {
    transition: none;
  }
}