.page-faq {
  --faq-gold: var(--color-gold, #ffd700);
  --faq-deep-red: var(--color-deep-red, #8b0000);
  --faq-charcoal: var(--color-charcoal, #1a1a1a);
  --faq-dark-gray: var(--color-dark-gray, #2e2e2e);
  --faq-light-gray: var(--color-light-gray, #b0b0b0);
  --faq-white: var(--color-white, #ffffff);
  --faq-red-glass: var(--color-red-glass, rgba(139,0,0,0.3));
  --faq-gold-glass: var(--color-gold-glass, rgba(255,215,0,0.2));
  --faq-font-heading: var(--font-heading, Impact, 'Arial Black', sans-serif);
  --faq-font-body: var(--font-body, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif);
  --faq-font-mono: var(--font-mono, 'Fira Code', 'Courier New', monospace);
  --faq-sidebar-width: 220px;
  --faq-radius: 8px;
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  display: block;
  width: 100%;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  color: var(--faq-light-gray);
  font-family: var(--faq-font-body);
  background: var(--faq-charcoal);
  box-sizing: border-box;
}

/* 顶部区域 */
.page-faq__hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

.page-faq__hero-decor {
  flex-shrink: 0;
}

.page-faq__hero-img {
  display: block;
  width: 120px;
  height: 120px;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 50%;
  background: var(--faq-dark-gray);
  box-shadow: 0 0 0 4px var(--faq-gold-glass), 0 0 30px rgba(255, 215, 0, 0.08);
}

.page-faq__hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.page-faq__breadcrumb {
  font-size: 0.8125rem;
  color: var(--faq-light-gray);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.page-faq__breadcrumb a {
  color: var(--faq-gold);
  text-decoration: none;
  transition: color var(--faq-transition);
}

.page-faq__breadcrumb a:hover,
.page-faq__breadcrumb a:focus-visible {
  color: var(--faq-white);
  text-decoration: underline;
}

.page-faq__breadcrumb-sep {
  color: var(--faq-light-gray);
  opacity: 0.5;
}

.page-faq__breadcrumb [aria-current="page"] {
  color: var(--faq-white);
  font-weight: 600;
}

.page-faq__title {
  font-family: var(--faq-font-heading);
  font-size: 2.25rem;
  line-height: 1.15;
  color: var(--faq-white);
  margin: 0;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.page-faq__subtitle {
  font-size: 1rem;
  color: var(--faq-light-gray);
  max-width: 560px;
  margin: 0;
  line-height: 1.6;
}

/* 主体布局 */
.page-faq__layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* 侧边栏类别导航 */
.page-faq__sidebar {
  flex-shrink: 0;
  width: 100%;
}

.page-faq__category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq__category-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.125rem;
  background: var(--faq-deep-red);
  color: var(--faq-white);
  border: none;
  border-radius: var(--faq-radius);
  font-family: var(--faq-font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--faq-transition), box-shadow var(--faq-transition), transform var(--faq-transition);
  white-space: nowrap;
  user-select: none;
}

.page-faq__category-btn:hover,
.page-faq__category-btn:focus-visible {
  background: #a00000;
  box-shadow: 0 0 0 2px var(--faq-gold-glass);
  outline: none;
}

.page-faq__category-btn.is-active {
  background: var(--faq-gold);
  color: var(--faq-charcoal);
  box-shadow: 0 0 0 2px var(--faq-gold);
}

/* 内容区 */
.page-faq__content {
  flex: 1;
  min-width: 0;
}

.page-faq__category {
  margin-bottom: 2.5rem;
}

.page-faq__category-heading {
  font-family: var(--faq-font-heading);
  font-size: 1.5rem;
  color: var(--faq-white);
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--faq-deep-red);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-faq__category-heading::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.25em;
  background: var(--faq-gold);
  border-radius: 2px;
  flex-shrink: 0;
}

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

.page-faq__item {
  background: var(--faq-dark-gray);
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid rgba(255, 215, 0, 0.08);
  transition: border-color var(--faq-transition);
}

.page-faq__item:focus-within,
.page-faq__item:hover {
  border-color: var(--faq-gold-glass);
}

/* 隐藏 checkbox */
.page-faq__toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

/* 问题标题 */
.page-faq__question {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  transition: background var(--faq-transition);
  min-height: 3.5rem;
}

.page-faq__question:hover,
.page-faq__question:focus-visible {
  background: var(--faq-gold-glass);
}

.page-faq__q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--faq-gold);
  color: var(--faq-charcoal);
  font-family: var(--faq-font-heading);
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
}

.page-faq__q-text {
  flex: 1;
  font-size: 1rem;
  color: var(--faq-white);
  font-weight: 500;
  line-height: 1.4;
}

.page-faq__arrow {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--faq-transition);
  color: var(--faq-gold);
  font-size: 1.125rem;
}

.page-faq__arrow::before {
  content: '▸';
  display: block;
  line-height: 1;
  font-size: 1.25rem;
}

/* 展开状态 */
.page-faq__toggle:checked ~ .page-faq__question .page-faq__arrow {
  transform: rotate(90deg);
}

/* 答案区域 */
.page-faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
  background: transparent;
}

.page-faq__toggle:checked ~ .page-faq__answer {
  max-height: 600px;
  background: var(--faq-gold-glass);
}

.page-faq__answer-inner {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--faq-light-gray);
}

.page-faq__answer-inner p {
  margin: 0 0 0.75rem;
}

.page-faq__answer-inner p:last-child {
  margin-bottom: 0;
}

.page-faq__answer-inner a {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--faq-transition);
}

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

.page-faq__answer-inner strong {
  color: var(--faq-white);
  font-weight: 600;
}

.page-faq__inline-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 0.75rem 0;
  border: 1px solid var(--faq-gold-glass);
  object-fit: cover;
}

.page-faq__contact-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.page-faq__contact-list li {
  padding-left: 1.25rem;
  position: relative;
  color: var(--faq-light-gray);
}

.page-faq__contact-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--faq-gold);
  font-weight: 700;
}

.page-faq__contact-list a {
  color: var(--faq-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* 桌面端布局 */
@media (min-width: 768px) {
  .page-faq {
    padding: 3rem 2rem 4rem;
  }

  .page-faq__hero {
    flex-direction: row;
    justify-content: center;
    gap: 2rem;
    text-align: left;
    margin-bottom: 3rem;
  }

  .page-faq__hero-text {
    align-items: flex-start;
  }

  .page-faq__hero-img {
    width: 200px;
    height: 200px;
  }

  .page-faq__title {
    font-size: 3rem;
  }

  .page-faq__subtitle {
    font-size: 1.0625rem;
  }

  .page-faq__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }

  .page-faq__sidebar {
    width: var(--faq-sidebar-width);
    position: sticky;
    top: calc(var(--header-height, 4rem) + 1rem);
  }

  .page-faq__category-list {
    flex-direction: column;
    gap: 0.5rem;
  }

  .page-faq__category-btn {
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem 1.25rem;
    white-space: normal;
  }

  .page-faq__content {
    flex: 1;
    max-width: 100%;
  }

  .page-faq__category-heading {
    font-size: 1.75rem;
  }

  .page-faq__question {
    padding: 1.125rem 1.5rem;
  }

  .page-faq__q-text {
    font-size: 1.0625rem;
  }

  .page-faq__answer-inner {
    padding: 0 1.5rem 1.5rem;
  }

  .page-faq__inline-img {
    width: 400px;
    max-width: 100%;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 3rem 2.5rem 5rem;
  }

  .page-faq__layout {
    gap: 3.5rem;
  }

  .page-faq__sidebar {
    width: 240px;
  }
}

/* 聚焦可见性 */
.page-faq__question:focus-visible {
  outline: 2px solid var(--faq-gold);
  outline-offset: -2px;
  border-radius: var(--faq-radius);
}

/* 减少运动偏好 */
@media (prefers-reduced-motion: reduce) {
  .page-faq__question,
  .page-faq__answer,
  .page-faq__arrow,
  .page-faq__item,
  .page-faq__category-btn {
    transition: none !important;
  }

  .page-faq__toggle:checked ~ .page-faq__answer {
    max-height: 600px;
  }
}