.page-faq {
  --faq-bg: var(--bg-dark);
  --faq-card-bg: var(--bg-card);
  --faq-accent: var(--color-blue);
  --faq-border: var(--color-silver);
  --faq-text: var(--text-primary);
  --faq-muted: var(--text-secondary);
  --faq-radius: 8px;
  background-color: var(--faq-bg);
  color: var(--faq-text);
  font-family: var(--body-font);
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.page-faq .container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ---------- 面包屑 ---------- */
.page-faq__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--faq-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.page-faq__breadcrumb a {
  color: var(--faq-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.page-faq__breadcrumb a:hover {
  color: var(--color-yellow);
}
.page-faq__sep {
  color: var(--faq-muted);
  font-size: 1.2rem;
}

/* ---------- 首屏 ---------- */
.page-faq__hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 2.5rem;
}
.page-faq__hero-img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--faq-radius);
  border: 2px solid var(--faq-border);
  box-shadow: var(--shadow-strong);
  margin-bottom: 1.5rem;
  width: 800px;
}
.page-faq__title {
  font-family: var(--heading-font);
  font-size: clamp(2.2rem, 6vw, 4rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  color: var(--faq-text);
  line-height: 1.1;
}
.page-faq__subtitle {
  font-size: 1.1rem;
  color: var(--faq-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- 布局：侧边栏 + 问答 ---------- */
.page-faq__layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ---------- 侧边栏 ---------- */
.page-faq__sidebar {
  background-color: var(--faq-card-bg);
  border: 2px solid var(--faq-border);
  border-radius: var(--faq-radius);
  padding: 1.5rem 1.2rem;
  box-shadow: var(--shadow-strong);
}
.page-faq__sidebar-heading {
  font-family: var(--heading-font);
  font-size: 1.6rem;
  text-transform: uppercase;
  color: var(--faq-accent);
  margin: 0 0 1rem;
  letter-spacing: 0.02em;
}
.page-faq__navlist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq__navlink {
  display: block;
  padding: 0.6rem 1rem;
  background-color: transparent;
  border: 1px solid var(--faq-border);
  border-radius: 4px;
  color: var(--faq-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}
.page-faq__navlink:hover,
.page-faq__navlink:focus {
  background-color: var(--faq-accent);
  border-color: var(--faq-accent);
  color: #fff;
}

/* ---------- 问答区 ---------- */
.page-faq__questions {
  flex: 1;
}

/* ---------- 区块标题 ---------- */
.page-faq__section {
  margin-bottom: 2.5rem;
  scroll-margin-top: 2rem;
}
.page-faq__section-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-family: var(--heading-font);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  text-transform: uppercase;
  color: var(--faq-text);
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}
.page-faq__section-num {
  font-size: 2.2rem;
  color: var(--faq-accent);
  font-family: var(--heading-font);
  line-height: 1;
}
.page-faq__section-intro {
  color: var(--faq-muted);
  margin: 0 0 1.2rem;
  font-size: 1rem;
  border-left: 4px solid var(--faq-accent);
  padding-left: 1rem;
}

/* ---------- 手风琴 ---------- */
.page-faq__accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-faq__item {
  background-color: var(--faq-card-bg);
  border: 2px solid var(--faq-border);
  border-radius: var(--faq-radius);
  box-shadow: var(--shadow-strong);
  overflow: hidden;
  transition: border-color 0.3s;
}
.page-faq__item[open] {
  border-color: var(--faq-accent);
}

.page-faq__item-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.2rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 1.05rem;
  transition: background-color 0.2s;
}
.page-faq__item-header::-webkit-details-marker {
  display: none;
}
.page-faq__item-header:hover {
  background-color: rgba(33,150,243,0.08);
}

.page-faq__item-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 4px;
  border: 1px solid var(--faq-border);
  background-color: var(--faq-bg);
}

.page-faq__item-title {
  flex: 1;
  color: var(--faq-text);
}

.page-faq__item-arrow {
  font-size: 0.85rem;
  color: var(--faq-accent);
  transition: transform 0.3s ease;
}
.page-faq__item[open] .page-faq__item-arrow {
  transform: rotate(180deg);
}

.page-faq__item-body {
  padding: 0 1.2rem 1.2rem;
  color: var(--faq-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  border-top: 1px solid var(--faq-border);
  padding-top: 1rem;
}
.page-faq__item-body p {
  margin: 0;
}

/* ---------- 联系卡片 ---------- */
.page-faq__contact-card {
  background-color: var(--faq-card-bg);
  border: 2px solid var(--faq-accent);
  border-radius: var(--faq-radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-strong);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-faq__contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--faq-border);
}
.page-faq__contact-item:last-of-type {
  border-bottom: none;
}
.page-faq__contact-label {
  font-weight: 700;
  color: var(--faq-accent);
  min-width: 120px;
  font-size: 0.95rem;
}
.page-faq__contact-value {
  color: var(--faq-text);
  word-break: break-all;
  font-size: 0.95rem;
}
.page-faq__contact-note {
  font-size: 0.85rem;
  color: var(--faq-muted);
  margin: 0;
  font-style: italic;
}
.page-faq__contact-btn {
  align-self: flex-start;
  margin-top: 0.5rem;
}

/* ---------- 更多帮助 ---------- */
.page-faq__more-help {
  text-align: center;
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px dashed var(--faq-border);
  border-radius: var(--faq-radius);
  color: var(--faq-muted);
  font-size: 0.95rem;
}
.page-faq__more-help a {
  color: var(--faq-accent);
  text-decoration: none;
  font-weight: 600;
}
.page-faq__more-help a:hover {
  text-decoration: underline;
}

/* ---------- 桌面端（≥768px） ---------- */
@media (min-width: 768px) {
  .page-faq__layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-faq__sidebar {
    position: sticky;
    top: 2rem;
    width: 240px;
    flex-shrink: 0;
  }
  .page-faq__questions {
    min-width: 0;
    max-width: 780px;
  }
  .page-faq__contact-item {
    flex-wrap: nowrap;
  }
  .page-faq__contact-label {
    min-width: 160px;
  }
}

/* ---------- 桌面大屏（≥1024px） ---------- */
@media (min-width: 1024px) {
  .page-faq__hero-content {
    flex-direction: row;
    text-align: left;
    gap: 2.5rem;
    align-items: center;
  }
  .page-faq__hero-img {
    width: 400px;
    height: 240px;
    margin-bottom: 0;
  }
  .page-faq__title {
    text-align: left;
  }
  .page-faq__subtitle {
    text-align: left;
    margin: 0;
  }
  .page-faq__sidebar {
    width: 280px;
  }
}
</style>