.page-faq {
  --faq-sidebar-width: 220px;
  --faq-gap: 40px;
  --faq-card-bg: rgba(11, 29, 58, 0.6);
  --faq-card-border: rgba(212, 175, 55, 0.2);
  --faq-card-radius: 8px;
  --faq-text-light: rgba(248, 249, 250, 0.85);
  --faq-text-muted: rgba(248, 249, 250, 0.55);
  --faq-gold-line: linear-gradient(90deg, var(--color-accent), transparent 80%);
  --faq-bg-texture: radial-gradient(circle at 15% 30%, rgba(212, 175, 55, 0.04) 0%, transparent 60%),
                    radial-gradient(circle at 85% 70%, rgba(255, 107, 53, 0.03) 0%, transparent 50%);
  position: relative;
  background: var(--color-primary) var(--faq-bg-texture);
  min-height: 60vh;
  padding: 0 0 60px;
  color: var(--faq-text-light);
  font-family: var(--font-body);
  line-height: 1.7;
}

/* 面包屑 */
.page-faq .breadcrumb {
  padding: 20px 0 10px;
  font-size: 13px;
  font-family: var(--font-heading);
  letter-spacing: 0.5px;
  color: var(--faq-text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}
.page-faq .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.25s;
}
.page-faq .breadcrumb a:hover {
  opacity: 0.75;
}
.page-faq .breadcrumb .separator {
  color: var(--faq-text-muted);
  font-size: 12px;
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--faq-text-light);
  font-weight: 600;
}

/* 英雄区 */
.page-faq .faq-hero {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--faq-card-border);
  margin-bottom: 36px;
  position: relative;
}
.page-faq .faq-hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 80px;
  height: 2px;
  background: var(--color-accent);
}
.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 40px;
  color: #fff;
  letter-spacing: -0.3px;
  margin: 0 0 8px;
}
.page-faq .faq-hero .faq-hero-sub {
  font-size: 16px;
  color: var(--faq-text-muted);
  margin: 0;
  font-family: var(--font-body);
}

/* 主布局 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* 侧边栏 */
.page-faq .faq-sidebar {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: 8px;
  padding: 4px 0 12px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) transparent;
  position: relative;
}
.page-faq .faq-sidebar::-webkit-scrollbar {
  height: 4px;
}
.page-faq .faq-sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.page-faq .faq-sidebar::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 4px;
}
.page-faq .faq-filter-btn {
  flex: 0 0 auto;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--faq-text-muted);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.page-faq .faq-filter-btn .faq-filter-num {
  font-size: 11px;
  color: var(--color-accent);
  opacity: 0.6;
  font-weight: 400;
}
.page-faq .faq-filter-btn.is-active,
.page-faq .faq-filter-btn:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}
.page-faq .faq-filter-btn.is-active .faq-filter-num,
.page-faq .faq-filter-btn:hover .faq-filter-num {
  color: var(--color-primary);
  opacity: 1;
}
.page-faq .faq-filter-btn:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 3px;
}

/* 问答区域 */
.page-faq .faq-content {
  flex: 1;
  min-width: 0;
}
.page-faq .faq-section {
  margin-bottom: 48px;
  scroll-margin-top: 120px;
}
.page-faq .faq-section:last-child {
  margin-bottom: 0;
}
.page-faq .faq-section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 26px;
  color: #fff;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.page-faq .faq-section-title .faq-section-num {
  font-size: 18px;
  color: var(--color-accent);
  font-weight: 400;
  letter-spacing: 1px;
}
.page-faq .faq-section-desc {
  font-size: 14px;
  color: var(--faq-text-muted);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(212, 175, 55, 0.12);
}

/* 问答卡片 (details) */
.page-faq .faq-card {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-card-border);
  border-radius: var(--faq-card-radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
}
.page-faq .faq-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 0.3s;
  border-radius: 3px 0 0 3px;
}
.page-faq .faq-card[open]::before {
  background: var(--color-accent);
}
.page-faq .faq-card:hover {
  border-color: rgba(212, 175, 55, 0.35);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.page-faq .faq-card[open] {
  border-color: rgba(212, 175, 55, 0.3);
  box-shadow: 0 6px 28px rgba(0, 0, 0, 0.3);
}

/* 问题 (summary) */
.page-faq .faq-q {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  color: #fff;
  padding: 18px 48px 18px 20px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  position: relative;
  user-select: none;
  transition: color 0.25s;
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q::marker {
  display: none;
  content: '';
}
.page-faq .faq-q::after {
  content: '+';
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 300;
  color: var(--color-cta);
  transition: transform 0.35s ease, color 0.3s;
  line-height: 1;
  font-family: var(--font-heading);
}
.page-faq .faq-card[open] .faq-q::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--color-accent);
}
.page-faq .faq-q:hover {
  color: var(--color-accent);
}
.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: -2px;
  border-radius: var(--faq-card-radius) var(--faq-card-radius) 0 0;
}

/* 答案 (内容区) */
.page-faq .faq-a {
  padding: 0 20px 20px;
  color: var(--faq-text-light);
  font-size: 15px;
  line-height: 1.8;
  animation: faqFadeIn 0.4s ease-out;
}
.page-faq .faq-a p {
  margin: 0 0 12px;
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-a .faq-a-text {
  flex: 1;
  min-width: 0;
}
@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 联系列表 */
.page-faq .faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 10px;
}
.page-faq .faq-contact-list li {
  padding: 4px 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}
.page-faq .faq-contact-list li strong {
  color: var(--color-accent);
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 14px;
}

/* 内联链接 */
.page-faq .faq-link {
  color: var(--color-cta);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 53, 0.3);
  transition: border-color 0.25s, color 0.25s;
}
.page-faq .faq-link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.page-faq .faq-link:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 2px;
  border-bottom: none;
}

/* 提示备注 */
.page-faq .faq-note {
  font-size: 13px;
  color: var(--faq-text-muted);
  font-style: italic;
  background: rgba(212, 175, 55, 0.06);
  padding: 8px 12px;
  border-radius: 4px;
  border-left: 2px solid var(--color-accent);
  margin-top: 8px;
}

/* 图片区 */
.page-faq .faq-figure {
  margin: 16px 0 0;
  max-width: 100%;
}
.page-faq .faq-img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid rgba(212, 175, 55, 0.12);
  display: block;
  object-fit: cover;
  background: rgba(0, 0, 0, 0.2);
}
.page-faq .faq-figcap {
  font-size: 12px;
  color: var(--faq-text-muted);
  margin-top: 6px;
  font-family: var(--font-heading);
  letter-spacing: 0.3px;
}

/* 图标 */
.page-faq .faq-icon-wrap {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-faq .faq-icon {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  background: rgba(212, 175, 55, 0.08);
  border-radius: 8px;
  padding: 6px;
  border: 1px solid rgba(212, 175, 55, 0.15);
}

/* 扩展布局：图文并排 */
.page-faq .faq-card[open] .faq-a {
  display: flex;
  flex-direction: column;
}
@media (min-width: 500px) {
  .page-faq .faq-card[open] .faq-a:has(.faq-a-text + .faq-figure) {
    flex-direction: row;
    gap: 24px;
    align-items: flex-start;
  }
  .page-faq .faq-card[open] .faq-a:has(.faq-a-text + .faq-figure) .faq-a-text {
    flex: 1;
  }
  .page-faq .faq-card[open] .faq-a:has(.faq-a-text + .faq-figure) .faq-figure {
    flex: 0 0 300px;
    margin-top: 0;
  }
  .page-faq .faq-card[open] .faq-a:has(.faq-a-text + .faq-icon-wrap) {
    flex-direction: row;
    gap: 20px;
    align-items: center;
  }
  .page-faq .faq-card[open] .faq-a:has(.faq-a-text + .faq-icon-wrap) .faq-icon-wrap {
    flex: 0 0 auto;
    margin-top: 0;
  }
}

/* ===== 平板及以上 ===== */
@media (min-width: 768px) {
  .page-faq {
    padding: 0 0 80px;
  }
  .page-faq .faq-hero h1 {
    font-size: 48px;
  }
  .page-faq .faq-hero .faq-hero-sub {
    font-size: 18px;
  }
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--faq-gap);
  }
  .page-faq .faq-sidebar {
    flex: 0 0 var(--faq-sidebar-width);
    flex-direction: column;
    overflow-x: visible;
    gap: 6px;
    padding: 8px 0;
    position: sticky;
    top: calc(var(--header-height, 100px) + 20px);
    z-index: 10;
  }
  .page-faq .faq-filter-btn {
    width: 100%;
    border-radius: 6px;
    padding: 12px 18px;
    font-size: 14px;
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(212, 175, 55, 0.12);
    justify-content: flex-start;
  }
  .page-faq .faq-filter-btn .faq-filter-num {
    font-size: 12px;
  }
  .page-faq .faq-filter-btn.is-active {
    background: rgba(212, 175, 55, 0.15);
    color: var(--color-accent);
    border-color: var(--color-accent);
  }
  .page-faq .faq-filter-btn.is-active .faq-filter-num {
    color: var(--color-accent);
  }
  .page-faq .faq-filter-btn:not(.is-active):hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--faq-text-light);
    border-color: rgba(212, 175, 55, 0.3);
  }
  .page-faq .faq-content {
    flex: 1;
    min-width: 0;
  }
  .page-faq .faq-section-title {
    font-size: 28px;
  }
  .page-faq .faq-q {
    font-size: 17px;
    padding: 20px 52px 20px 24px;
  }
  .page-faq .faq-a {
    padding: 0 24px 24px;
    font-size: 16px;
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-faq {
    padding: 0 0 100px;
  }
  .page-faq .faq-hero {
    padding: 28px 0 36px;
    margin-bottom: 44px;
  }
  .page-faq .faq-hero h1 {
    font-size: 56px;
    letter-spacing: -0.5px;
  }
  .page-faq .faq-hero .faq-hero-sub {
    font-size: 19px;
  }
  .page-faq .faq-sidebar {
    --faq-sidebar-width: 240px;
    gap: 8px;
  }
  .page-faq .faq-filter-btn {
    padding: 14px 20px;
    font-size: 15px;
  }
  .page-faq .faq-section-title {
    font-size: 30px;
  }
  .page-faq .faq-section-desc {
    font-size: 15px;
    margin-bottom: 24px;
  }
  .page-faq .faq-card {
    margin-bottom: 14px;
  }
  .page-faq .faq-q {
    font-size: 18px;
    padding: 22px 56px 22px 28px;
  }
  .page-faq .faq-q::after {
    font-size: 26px;
    right: 20px;
  }
  .page-faq .faq-a {
    padding: 0 28px 28px;
    font-size: 16px;
  }
}
</style>

```