.page-faq {
  position: relative;
  --faq-section-gap: 2rem;
  --faq-item-radius: 12px;
  --faq-bg-decor-opacity: 0.06;
  --faq-number-color: var(--color-primary);
  --faq-number-size: 1.25rem;
  --faq-section-number-size: 2.5rem;
}

.page-faq .faq-bg-decor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: var(--faq-bg-decor-opacity);
  z-index: -1;
  pointer-events: none;
  user-select: none;
}

.page-faq .page-container {
  padding: 1.25rem 1rem 2.5rem;
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.page-faq .breadcrumb-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

.page-faq .breadcrumb-link:hover {
  color: var(--color-primary);
}

.page-faq .breadcrumb-sep {
  color: var(--color-text-secondary);
  opacity: 0.5;
}

.page-faq .breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
}

/* 页面标题 */
.page-faq .faq-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 2px solid var(--color-border);
}

.page-faq .faq-title {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 0.5rem 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.75rem;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-faq .faq-title .section-number {
  font-size: 1.5em;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.page-faq .faq-title-text {
  font-size: 1em;
  color: var(--color-text);
}

.page-faq .faq-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin: 0.5rem 0 0 0;
  line-height: 1.6;
  max-width: 36em;
}

/* 区块通用 */
.page-faq .faq-section {
  margin-bottom: var(--faq-section-gap);
  padding: 0;
}

.page-faq .faq-section-title {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0 0 0.25rem 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.page-faq .faq-section-title .section-number {
  font-size: var(--faq-section-number-size);
  color: var(--color-accent);
  font-family: var(--font-mono);
  line-height: 1;
  letter-spacing: 0.06em;
  opacity: 0.85;
}

.page-faq .faq-section-label {
  font-size: 1em;
  color: var(--color-text);
}

.page-faq .faq-section-desc {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin: 0.25rem 0 1rem 0;
  padding-left: calc(var(--faq-section-number-size) + 0.5rem);
  line-height: 1.5;
}

/* 手风琴项 */
.page-faq .faq-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--faq-item-radius);
  margin-bottom: 0.625rem;
  overflow: hidden;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.page-faq .faq-item:hover {
  border-color: var(--color-primary-dim);
}

.page-faq .faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-dim);
}

.page-faq .faq-question {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  background: transparent;
  transition: background var(--transition-speed) ease;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-question::marker {
  display: none;
  content: '';
}

.page-faq .faq-question:hover {
  background: var(--color-glass);
}

.page-faq .faq-item[open] .faq-question {
  background: var(--color-primary-dim);
}

.page-faq .faq-number {
  font-family: var(--font-mono);
  font-size: var(--faq-number-size);
  font-weight: 700;
  color: var(--faq-number-color);
  min-width: 1.8em;
  text-align: right;
  flex-shrink: 0;
  line-height: 1;
  transition: color var(--transition-speed) ease;
}

.page-faq .faq-item[open] .faq-number {
  color: var(--color-accent);
}

.page-faq .faq-text {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.page-faq .faq-item[open] .faq-text {
  color: var(--color-primary);
}

.page-faq .faq-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-speed) ease;
}

.page-faq .faq-icon::before,
.page-faq .faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-text-secondary);
  border-radius: 1px;
  transition: background var(--transition-speed) ease, transform var(--transition-speed) ease;
}

.page-faq .faq-icon::before {
  width: 2px;
  height: 0.75rem;
}

.page-faq .faq-icon::after {
  width: 0.75rem;
  height: 2px;
}

.page-faq .faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.page-faq .faq-item[open] .faq-icon::before,
.page-faq .faq-item[open] .faq-icon::after {
  background: var(--color-accent);
}

/* 答案区域 */
.page-faq .faq-answer {
  padding: 0 1rem 1rem 1rem;
  color: var(--color-text);
  font-size: 0.9rem;
  line-height: 1.7;
  animation: faq-fadeInUp 0.35s ease-out;
}

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

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

.page-faq .faq-answer a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--color-primary-dim);
  transition: color var(--transition-speed) ease, text-decoration-color var(--transition-speed) ease;
}

.page-faq .faq-answer a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.page-faq .faq-image {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 0.75rem 0 0 0;
  border: 1px solid var(--color-border);
  object-fit: cover;
}

/* 联系方式列表 */
.page-faq .faq-contact-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.page-faq .faq-contact-list li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding-left: 0.75rem;
  border-left: 2px solid var(--color-primary-dim);
}

/* 信任声明 */
.page-faq .faq-trust {
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  border-radius: var(--faq-item-radius);
  text-align: center;
}

.page-faq .faq-trust-text {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* 动画 */
@keyframes faq-fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(-6px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 移动端优先：窄屏优化 */
@media (max-width: 479px) {
  .page-faq .page-container {
    padding: 1rem 0.75rem 2rem;
  }

  .page-faq .faq-title {
    font-size: 1.4rem;
    flex-wrap: wrap;
  }

  .page-faq .faq-title .section-number {
    font-size: 1.3em;
  }

  .page-faq .faq-section-title {
    font-size: 1.1rem;
    flex-wrap: wrap;
  }

  .page-faq .faq-section-title .section-number {
    font-size: 2rem;
  }

  .page-faq .faq-section-desc {
    padding-left: 0;
    font-size: 0.8125rem;
  }

  .page-faq .faq-question {
    padding: 0.75rem 0.75rem;
    gap: 0.5rem;
  }

  .page-faq .faq-number {
    font-size: 1rem;
    min-width: 1.5em;
  }

  .page-faq .faq-text {
    font-size: 0.875rem;
  }

  .page-faq .faq-answer {
    padding: 0 0.75rem 0.75rem 0.75rem;
    font-size: 0.85rem;
  }

  .page-faq .faq-icon {
    width: 1rem;
    height: 1rem;
  }

  .page-faq .faq-icon::before {
    height: 0.625rem;
  }

  .page-faq .faq-icon::after {
    width: 0.625rem;
  }
}

/* 桌面端 */
@media (min-width: 768px) {
  .page-faq .page-container {
    padding: 1.5rem 2rem 3rem;
  }

  .page-faq .breadcrumb {
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
  }

  .page-faq .faq-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
  }

  .page-faq .faq-title {
    font-size: 2.25rem;
    gap: 1rem;
  }

  .page-faq .faq-subtitle {
    font-size: 1rem;
  }

  .page-faq .faq-section {
    margin-bottom: 2.5rem;
  }

  .page-faq .faq-section-title {
    font-size: 1.5rem;
  }

  .page-faq .faq-section-title .section-number {
    font-size: 3rem;
  }

  .page-faq .faq-section-desc {
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
  }

  .page-faq .faq-item {
    margin-bottom: 0.75rem;
  }

  .page-faq .faq-question {
    padding: 1rem 1.25rem;
    gap: 0.75rem;
  }

  .page-faq .faq-number {
    font-size: 1.375rem;
    min-width: 2em;
  }

  .page-faq .faq-text {
    font-size: 1rem;
  }

  .page-faq .faq-answer {
    padding: 0 1.25rem 1.25rem 1.25rem;
    font-size: 0.9375rem;
  }

  .page-faq .faq-image {
    max-width: 80%;
  }

  .page-faq .faq-trust {
    padding: 1.25rem 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .page-container {
    padding: 2rem 2.5rem 4rem;
  }

  .page-faq .faq-title {
    font-size: 2.75rem;
  }

  .page-faq .faq-image {
    max-width: 60%;
  }
}