.page-faq {
  --faq-sidebar-w: 280px;
  --faq-media-maxw: 600px;
  --faq-hero-deco: radial-gradient(circle, rgba(255, 215, 0, 0.16) 0%, transparent 70%);
}

/* ===== 帮助中心首屏 ===== */
.page-faq .faq-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 68%, #1D3461 100%);
  color: var(--white);
  padding: 2.25rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: var(--faq-hero-deco);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: 18%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.14) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumb {
  margin-bottom: 2rem;
}

.page-faq .faq-hero .crumb__item {
  color: rgba(255, 255, 255, 0.65);
}

.page-faq .faq-hero .crumb__item a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-hero .crumb__item a:hover {
  color: var(--gold);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 2.25rem;
  align-items: end;
}

.page-faq .faq-hero__intro {
  max-width: 46rem;
}

.page-faq .faq-hero__intro .skew-accent {
  display: inline-block;
  margin-bottom: 1rem;
}

.page-faq .faq-hero__title {
  font-family: var(--font-disp);
  font-size: clamp(2.2rem, 7vw, 3.5rem);
  line-height: 1.08;
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-faq .faq-hero__lead {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0 0 1.75rem;
  max-width: 42rem;
}

.page-faq .faq-hero__intro .btn--gold {
  margin-top: 0.25rem;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-m);
  overflow: hidden;
  margin: 0;
}

.page-faq .faq-hero__stat {
  background: rgba(11, 30, 58, 0.72);
  padding: 1rem 1.25rem;
}

.page-faq .faq-hero__stat dt {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 0.25rem;
}

.page-faq .faq-hero__stat dd {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
  margin: 0;
  line-height: 1.2;
}

/* ===== 主体布局 ===== */
.page-faq .faq-layout {
  background: var(--bg-mist);
  padding: 2.5rem 0 4rem;
  position: relative;
}

.page-faq .faq-layout::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--orange) 100%);
}

.page-faq .faq-layout__inner {
  display: grid;
  gap: 2.25rem;
  align-items: start;
}

/* ===== 侧边导航 ===== */
.page-faq .faq-sidebar__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.page-faq .faq-sidebar__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.page-faq .faq-sidebar__nav a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  background: var(--white);
  border: 1px solid var(--line-light);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-faq .faq-sidebar__nav a:hover {
  border-color: var(--gold);
  color: var(--navy);
  transform: translateY(-2px);
}

.page-faq .faq-sidebar__note {
  background: var(--white);
  border: 1px solid var(--line-light);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-m);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: flex-start;
}

.page-faq .faq-sidebar__note p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-sidebar__note strong {
  display: block;
  color: var(--ink);
  margin-bottom: 0.15rem;
}

.page-faq .faq-sidebar__note a {
  color: var(--navy);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 2px;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-sidebar__note a:hover {
  color: var(--orange);
}

/* ===== 内容区 ===== */
.page-faq .faq-content {
  display: grid;
  gap: 2.25rem;
  min-width: 0;
}

.page-faq .faq-group {
  background: var(--white);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-l);
  box-shadow: 0 4px 20px rgba(11, 30, 58, 0.05);
  padding: 1.5rem;
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: 1.25rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--line-light);
}

.page-faq .faq-group__index {
  font-family: var(--font-disp);
  font-size: 2.25rem;
  line-height: 1;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  flex-shrink: 0;
}

.page-faq .faq-group__title {
  font-family: var(--font-disp);
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 0 0 0.25rem;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__sub {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ===== 手风琴条目 ===== */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-light);
}

.page-faq .faq-item:last-of-type {
  border-bottom: none;
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--ink);
  padding: 1.1rem 2.75rem 1.1rem 0;
  position: relative;
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--navy);
}

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.125rem;
  transition: transform var(--t-base) var(--ease), background var(--t-base) var(--ease), color var(--t-base) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: translateY(-50%) rotate(45deg);
  background: var(--gold);
  color: var(--navy);
}

.page-faq .faq-item__a {
  padding: 0 2.75rem 1.25rem 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-faq .faq-item__a p {
  margin: 0 0 0.75rem;
}

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

.page-faq .faq-item__a a {
  color: var(--navy);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

.page-faq .faq-item__a .tag-pill {
  margin-top: 0.75rem;
}

/* ===== 图解媒体 ===== */
.page-faq .faq-media {
  margin: 1.25rem 0 1rem;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line-light);
  background: var(--bg-mist);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-media figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: var(--white);
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--line-light);
}

/* ===== 底部联系引导 ===== */
.page-faq .faq-help {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-m);
  padding: 1.5rem;
  margin-top: 1.25rem;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 160px;
  height: 160px;
  background: var(--faq-hero-deco);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-help__text {
  position: relative;
  z-index: 1;
}

.page-faq .faq-help__label {
  font-family: var(--font-disp);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
  margin: 0 0 0.25rem;
}

.page-faq .faq-help__text p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  line-height: 1.6;
}

.page-faq .faq-help .btn {
  position: relative;
  z-index: 1;
}

/* ===== 桌面端 ===== */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 3.5rem 0 4rem;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.6fr 1fr;
    gap: 3rem;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-hero__stat {
    padding: 1.15rem 1.25rem;
  }

  .page-faq .faq-layout {
    padding: 4rem 0 5rem;
  }

  .page-faq .faq-layout__inner {
    grid-template-columns: var(--faq-sidebar-w) 1fr;
    gap: 3.5rem;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h-scroll) + 2rem);
  }

  .page-faq .faq-sidebar__nav {
    flex-direction: column;
    gap: 0;
    background: var(--white);
    border: 1px solid var(--line-light);
    border-radius: var(--radius-m);
    overflow: hidden;
    margin-bottom: 1.25rem;
  }

  .page-faq .faq-sidebar__nav a {
    border: none;
    border-radius: 0;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--line-light);
    display: block;
    font-weight: 600;
    transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), padding var(--t-fast) var(--ease);
  }

  .page-faq .faq-sidebar__nav a:last-child {
    border-bottom: none;
  }

  .page-faq .faq-sidebar__nav a:hover {
    background: rgba(255, 215, 0, 0.12);
    border-left: 3px solid var(--gold);
    padding-left: 1.1rem;
    transform: none;
  }

  .page-faq .faq-sidebar__note {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .page-faq .faq-sidebar__note p {
    max-width: 11rem;
  }

  .page-faq .faq-sidebar__note a {
    flex-shrink: 0;
  }

  .page-faq .faq-content {
    gap: 2.75rem;
  }

  .page-faq .faq-group {
    padding: 2rem;
  }

  .page-faq .faq-media {
    max-width: var(--faq-media-maxw);
    margin: 1.25rem 0 1rem;
  }

  .page-faq .faq-help {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 1.75rem 2rem;
  }

  .page-faq .faq-help__text {
    max-width: 30rem;
  }
}