.page-disclaimer {
  --clause-marker-color: var(--color-accent-secondary);
  --clause-heading-color: var(--color-primary-fg);
  --clause-text-color: var(--color-neutral-gray);
  --clause-border-color: var(--color-border-subtle);
  --clause-hover-bg: var(--color-surface-light);
  --terms-icon-size: 120px;
  --terms-title-size: 2rem;
  --clause-gap: 1.5rem;
  --clause-padding: 1.25rem;
  --clause-radius: 4px;
  --terms-max-width: 840px;
}

.page-disclaimer .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--header-total) + var(--space-lg)) var(--space-md) var(--space-2xl);
}

.page-disclaimer .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--size-small);
  color: var(--color-neutral-gray);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.02em;
}

.page-disclaimer .breadcrumb a {
  color: var(--color-brand-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-disclaimer .breadcrumb a:hover,
.page-disclaimer .breadcrumb a:focus-visible {
  color: var(--color-accent-secondary);
  outline: none;
  text-decoration: underline;
}

.page-disclaimer .breadcrumb a:focus-visible {
  outline: 2px solid var(--color-accent-secondary);
  outline-offset: 2px;
  border-radius: 2px;
}

.page-disclaimer .breadcrumb span[aria-current="page"] {
  color: var(--color-primary-fg);
  font-weight: 600;
}

.page-disclaimer .terms-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  position: relative;
}

.page-disclaimer .terms-icon {
  margin: 0 auto var(--space-lg);
  width: var(--terms-icon-size);
  height: var(--terms-icon-size);
  border: 2px solid var(--color-brand-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-surface-dark);
  box-shadow: 0 0 32px rgba(211, 47, 47, 0.12);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-disclaimer .terms-icon:hover {
  border-color: var(--color-accent-secondary);
  box-shadow: 0 0 40px rgba(255, 193, 7, 0.08);
}

.page-disclaimer .terms-icon img {
  width: 80%;
  height: 80%;
  object-fit: contain;
  display: block;
}

.page-disclaimer .terms-title {
  font-family: var(--font-heading);
  font-size: var(--terms-title-size);
  font-weight: 800;
  color: var(--color-primary-fg);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 var(--space-sm);
  line-height: 1.15;
}

.page-disclaimer .terms-subtitle {
  font-family: var(--font-body);
  font-size: var(--size-body);
  color: var(--color-neutral-gray);
  max-width: 640px;
  margin: 0 auto var(--space-sm);
  line-height: 1.6;
}

.page-disclaimer .terms-updated {
  font-family: var(--font-mono);
  font-size: var(--size-small);
  color: var(--color-brand-accent);
  letter-spacing: 0.04em;
  margin-top: var(--space-sm);
  opacity: 0.8;
}

.page-disclaimer .terms-body {
  max-width: var(--terms-max-width);
  margin: 0 auto var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--clause-gap);
}

.page-disclaimer .terms-clause {
  background: var(--color-surface-dark);
  border: var(--border-thin);
  border-left: 4px solid var(--color-brand-accent);
  border-radius: var(--clause-radius);
  overflow: hidden;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.page-disclaimer .terms-clause:hover {
  border-left-color: var(--color-accent-secondary);
  background: var(--clause-hover-bg);
}

.page-disclaimer .clause-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--clause-padding);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.page-disclaimer .clause-header:hover {
  background: var(--color-surface-light);
}

.page-disclaimer .clause-header:focus-visible {
  outline: 2px solid var(--color-accent-secondary);
  outline-offset: -2px;
  border-radius: var(--clause-radius);
}

.page-disclaimer .clause-marker {
  font-size: 0.85rem;
  color: var(--clause-marker-color);
  flex-shrink: 0;
  width: 1.2rem;
  text-align: center;
  transition: transform var(--transition-fast);
  line-height: 1;
}

.page-disclaimer .clause-header[aria-expanded="false"] .clause-marker {
  transform: rotate(90deg);
}

.page-disclaimer .clause-header[aria-expanded="true"] .clause-marker {
  transform: rotate(0deg);
}

.page-disclaimer .clause-heading {
  font-family: var(--font-heading);
  font-size: var(--size-h4);
  font-weight: 700;
  color: var(--clause-heading-color);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.page-disclaimer .clause-content {
  padding: 0 var(--clause-padding) var(--clause-padding);
  color: var(--clause-text-color);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: 1.7;
  overflow: hidden;
  transition: max-height 0.25s ease, padding 0.25s ease;
}

.page-disclaimer .clause-content p {
  margin: 0 0 var(--space-md);
}

.page-disclaimer .clause-content p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .clause-list {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.page-disclaimer .clause-list li {
  position: relative;
  padding-left: 1.6rem;
  color: var(--clause-text-color);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: 1.6;
}

.page-disclaimer .clause-list li::before {
  content: "—";
  position: absolute;
  left: 0.2rem;
  color: var(--color-brand-accent);
  font-weight: 600;
}

.page-disclaimer .terms-related {
  max-width: var(--terms-max-width);
  margin: 0 auto;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--clause-border-color);
}

.page-disclaimer .related-heading {
  font-family: var(--font-heading);
  font-size: var(--size-h4);
  font-weight: 700;
  color: var(--color-primary-fg);
  margin: 0 0 var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-disclaimer .related-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.page-disclaimer .related-link {
  font-family: var(--font-body);
  font-size: var(--size-body);
  color: var(--color-brand-accent);
  text-decoration: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-disclaimer .related-link:hover,
.page-disclaimer .related-link:focus-visible {
  color: var(--color-accent-secondary);
  border-bottom-color: var(--color-accent-secondary);
  outline: none;
}

.page-disclaimer .related-link:focus-visible {
  outline: 2px solid var(--color-accent-secondary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* 折叠状态：当 JS 设置 aria-expanded="false" 时隐藏内容 */
.page-disclaimer .clause-header[aria-expanded="false"] + .clause-content {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
}

/* 展开状态：默认内容完整可见（渐进增强） */
.page-disclaimer .clause-header[aria-expanded="true"] + .clause-content {
  max-height: 1000px;
  opacity: 1;
}

/* 无 JS 时始终显示全部内容 */
.page-disclaimer .clause-content {
  max-height: none;
  opacity: 1;
}

/* ===== 响应式设计 ===== */

/* 移动端优先：窄屏适配 */
@media (max-width: 639px) {
  .page-disclaimer .container {
    padding-top: calc(var(--header-total) + var(--space-md));
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .page-disclaimer .terms-icon {
    --terms-icon-size: 80px;
    width: 80px;
    height: 80px;
  }

  .page-disclaimer .terms-icon img {
    width: 70%;
    height: 70%;
  }

  .page-disclaimer .terms-title {
    --terms-title-size: 1.5rem;
    font-size: 1.5rem;
  }

  .page-disclaimer .terms-subtitle {
    font-size: 0.9rem;
  }

  .page-disclaimer .clause-heading {
    font-size: 1.1rem;
  }

  .page-disclaimer .clause-content {
    font-size: 0.9rem;
  }

  .page-disclaimer .clause-header {
    padding: var(--space-md) var(--space-sm);
  }

  .page-disclaimer .clause-content {
    padding: 0 var(--space-sm) var(--space-md);
  }

  .page-disclaimer .terms-related {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .page-disclaimer .related-links {
    flex-direction: column;
    gap: var(--space-md);
  }

  .page-disclaimer .breadcrumb {
    font-size: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
  }
}

/* 平板及以上 */
@media (min-width: 640px) {
  .page-disclaimer .terms-title {
    --terms-title-size: 2.5rem;
    font-size: 2.5rem;
  }

  .page-disclaimer .clause-padding-xl {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

/* 桌面宽屏 */
@media (min-width: 1024px) {
  .page-disclaimer .terms-title {
    --terms-title-size: 2.75rem;
    font-size: 2.75rem;
  }

  .page-disclaimer .terms-body {
    gap: 1.75rem;
  }

  .page-disclaimer .clause-padding-xl {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .page-disclaimer .terms-icon {
    --terms-icon-size: 140px;
    width: 140px;
    height: 140px;
  }

  .page-disclaimer .terms-icon img {
    width: 75%;
    height: 75%;
  }
}

/* 超大屏内容宽度限制 */
@media (min-width: 1440px) {
  .page-disclaimer .terms-body,
  .page-disclaimer .terms-header,
  .page-disclaimer .terms-related {
    max-width: 880px;
  }
}