/* ========================================
   page-disclaimer – 使用说明与免责声明
   作用域：.page-disclaimer 内所有专属样式
   移动端优先 + 桌面媒体查询
   ======================================== */

.page-disclaimer {
  --disclaimer-bg-grid: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
                        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  --disclaimer-bg-size: 32px 32px;
  --disclaimer-banner-height: 200px;
  --disclaimer-accordion-radius: 8px;
  --disclaimer-accordion-border: rgba(255,255,255,0.08);

  display: block;
  background-color: var(--color-bg, #0A1F3F);
  background-image: var(--disclaimer-bg-grid);
  background-size: var(--disclaimer-bg-size);
  background-position: 0 0;
  min-height: 60vh;
}

/* ---------- 顶部横幅 ---------- */
.page-disclaimer__banner {
  position: relative;
  width: 100%;
  height: var(--disclaimer-banner-height);
  overflow: hidden;
  background-color: var(--color-surface, #1A2F4F);
}

.page-disclaimer__banner-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  max-width: 100%;
}

.page-disclaimer__banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,31,63,0.15) 0%, rgba(10,31,63,0.50) 100%);
  pointer-events: none;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
  font-family: var(--font-body, 'Roboto Condensed', 'Segoe UI', sans-serif);
  font-size: 0.875rem;
  color: var(--color-text-muted, #B0C4DE);
}

.page-disclaimer__breadcrumb-link {
  color: var(--color-secondary, #00FF88);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s ease);
}

.page-disclaimer__breadcrumb-link:hover,
.page-disclaimer__breadcrumb-link:focus-visible {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
}

.page-disclaimer__breadcrumb-sep {
  color: var(--color-text-muted, #B0C4DE);
  font-size: 1.1em;
  user-select: none;
}

.page-disclaimer__breadcrumb-current {
  color: var(--color-text, #FFFFFF);
  opacity: 0.8;
}

/* ---------- 页面标题 ---------- */
.page-disclaimer__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text, #FFFFFF);
  line-height: 1.15;
  word-break: break-word;
}

.page-disclaimer__title-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: block;
}

.page-disclaimer__subtitle {
  margin-top: 0;
  margin-bottom: 2rem;
  font-family: var(--font-body, 'Roboto Condensed', 'Segoe UI', sans-serif);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted, #B0C4DE);
  max-width: 640px;
}

/* ---------- 手风琴 ---------- */
.page-disclaimer__accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.page-disclaimer__accordion-item {
  background-color: var(--color-surface, #1A2F4F);
  border: 1px solid var(--disclaimer-accordion-border);
  border-radius: var(--disclaimer-accordion-radius);
  overflow: hidden;
  transition: border-color var(--transition-med, 0.35s ease);
  box-shadow: var(--shadow-card, 0 8px 32px rgba(0,0,0,0.3));
}

.page-disclaimer__accordion-item[open] {
  border-color: var(--color-secondary, #00FF88);
}

.page-disclaimer__accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  font-family: var(--font-heading, 'Impact', 'Arial Black', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text, #FFFFFF);
  cursor: pointer;
  background-color: transparent;
  border: none;
  list-style: none;
  user-select: none;
  transition: background-color var(--transition-fast, 0.2s ease);
}

.page-disclaimer__accordion-trigger::-webkit-details-marker {
  display: none;
}

.page-disclaimer__accordion-trigger:hover,
.page-disclaimer__accordion-trigger:focus-visible {
  background-color: rgba(0,255,136,0.06);
}

.page-disclaimer__accordion-trigger:focus-visible {
  outline: 2px solid var(--color-secondary, #00FF88);
  outline-offset: -2px;
}

.page-disclaimer__accordion-trigger-text {
  flex: 1;
}

.page-disclaimer__accordion-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--color-text-muted, #B0C4DE);
  transition: transform var(--transition-med, 0.35s ease), color var(--transition-med, 0.35s ease);
}

.page-disclaimer__accordion-item[open] .page-disclaimer__accordion-icon {
  transform: rotate(180deg);
  color: var(--color-secondary, #00FF88);
}

/* 手风琴内容 */
.page-disclaimer__accordion-content {
  padding: 0 1.25rem 1.5rem 1.25rem;
  animation: disclaimer-fade-in 0.4s ease forwards;
}

@keyframes disclaimer-fade-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 列表样式 */
.page-disclaimer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.page-disclaimer__list-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-family: var(--font-body, 'Roboto Condensed', 'Segoe UI', sans-serif);
  font-size: 0.975rem;
  line-height: 1.65;
  color: var(--color-text, #FFFFFF);
}

.page-disclaimer__list-label {
  font-weight: 700;
  font-size: 1.025rem;
  color: var(--color-secondary, #00FF88);
  letter-spacing: 0.01em;
}

.page-disclaimer__highlight {
  color: var(--color-accent, #FF6B35);
  font-style: normal;
  font-weight: 600;
}

/* ---------- 底部联系区 ---------- */
.page-disclaimer__footer-section {
  margin-top: 1rem;
  padding-top: 1.75rem;
  padding-bottom: 2.5rem;
  border-top: 1px solid var(--disclaimer-accordion-border);
}

.page-disclaimer__footer-text {
  font-family: var(--font-body, 'Roboto Condensed', 'Segoe UI', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-muted, #B0C4DE);
  max-width: 600px;
}

.page-disclaimer__link {
  color: var(--color-secondary, #00FF88);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast, 0.2s ease), text-decoration var(--transition-fast, 0.2s ease);
}

.page-disclaimer__link:hover,
.page-disclaimer__link:focus-visible {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
}

/* ---------- 响应式：桌面（≥768px） ---------- */
@media (min-width: 768px) {
  .page-disclaimer {
    --disclaimer-banner-height: 240px;
  }

  .page-disclaimer__banner-img {
    object-position: center 25%;
  }

  .page-disclaimer__breadcrumb {
    padding-top: 1.75rem;
    font-size: 0.95rem;
  }

  .page-disclaimer__title {
    font-size: 3rem;
    gap: 1rem;
    margin-top: 2rem;
  }

  .page-disclaimer__title-icon {
    width: 44px;
    height: 44px;
  }

  .page-disclaimer__subtitle {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
  }

  .page-disclaimer__accordion {
    gap: 1rem;
    max-width: 880px;
  }

  .page-disclaimer__accordion-trigger {
    padding: 1.25rem 1.75rem;
    font-size: 1.375rem;
  }

  .page-disclaimer__accordion-content {
    padding: 0 1.75rem 1.75rem 1.75rem;
  }

  .page-disclaimer__list-item {
    font-size: 1.025rem;
    flex-direction: row;
    gap: 0.5rem;
  }

  .page-disclaimer__list-label {
    flex-shrink: 0;
    min-width: 8rem;
    font-size: 1.05rem;
  }

  .page-disclaimer__footer-section {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }

  .page-disclaimer__footer-text {
    font-size: 1.05rem;
  }
}

/* ---------- 桌面大屏（≥1200px） ---------- */
@media (min-width: 1200px) {
  .page-disclaimer__banner {
    height: 260px;
  }

  .page-disclaimer__title {
    font-size: 3.5rem;
  }

  .page-disclaimer__title-icon {
    width: 48px;
    height: 48px;
  }

  .page-disclaimer__accordion {
    max-width: 960px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer__accordion-content {
    animation: none;
  }
  .page-disclaimer__accordion-icon {
    transition: none;
  }
  .page-disclaimer__accordion-item {
    transition: none;
  }
  .page-disclaimer__accordion-trigger {
    transition: none;
  }
  .page-disclaimer__link {
    transition: none;
  }
}