/* ===== 页面作用域：.page-privacy ===== */
.page-privacy {
  position: relative;
  color: var(--color-text, #FFFFFF);
  background: var(--color-bg, #050505);
  min-height: 100vh;
  padding: calc(var(--nav-height, 64px) + 1.5rem) 0 3rem;
  overflow-x: hidden;
}

/* ----- 背景装饰层 ----- */
.privacy-bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.08;
  mix-blend-mode: screen;
}
.privacy-bg-layer img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ----- 面包屑 ----- */
.breadcrumb {
  position: relative;
  z-index: 2;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 var(--space-sm, 1rem) var(--space-md, 2rem);
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.875rem;
  color: var(--color-text-secondary, #B3B3B3);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-accent, #1A5CFF);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--color-accent-highlight, #39FF14);
  text-shadow: 0 0 8px var(--color-accent-highlight, #39FF14);
}
.breadcrumb-sep {
  color: var(--color-text-secondary, #B3B3B3);
  font-size: 0.75rem;
}
.breadcrumb [aria-current="page"] {
  color: var(--color-text, #FFFFFF);
  font-weight: 500;
}

/* ----- Hero 区域 ----- */
.privacy-hero {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md, 2rem);
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 var(--space-sm, 1rem) var(--space-lg, 3rem);
}
.privacy-hero-img {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--color-accent, #1A5CFF);
  box-shadow: 0 0 30px rgba(26, 92, 255, 0.3), inset 0 0 20px rgba(26, 92, 255, 0.1);
  transition: transform 0.4s ease;
}
.privacy-hero-img:hover {
  transform: scale(1.04);
}
.hero-shield {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.privacy-hero-text {
  text-align: center;
}
.privacy-hero-text h1 {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading, 'Space Grotesk', sans-serif);
  font-weight: 700;
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text, #FFFFFF);
}
.privacy-subtitle {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.95rem, 2vw, 1.2rem);
  color: var(--color-text-secondary, #B3B3B3);
  letter-spacing: 0.04em;
  margin: 0;
  position: relative;
  display: inline-block;
}
.privacy-subtitle::after {
  content: '';
  display: block;
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent, #1A5CFF), var(--color-accent-secondary, #7B2FF7));
  margin: 0.75rem auto 0;
  border-radius: 2px;
}

/* ----- 介绍段落 ----- */
.privacy-intro {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto var(--space-lg, 3rem);
  padding: 0 var(--space-sm, 1rem);
}
.privacy-intro-msg {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #B3B3B3);
  background: var(--glass, rgba(255,255,255,0.05));
  border-left: 3px solid var(--color-accent, #1A5CFF);
  padding: var(--space-sm, 1rem) var(--space-md, 2rem);
  border-radius: 0 var(--radius, 0.25rem) var(--radius, 0.25rem) 0;
  margin: 0;
}

/* ----- 内容容器 ----- */
.privacy-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-sm, 1rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 2rem);
}

/* ----- 章节卡片 (可折叠) ----- */
.privacy-section {
  background: var(--color-surface, #1A1A1A);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius, 0.25rem);
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}
.privacy-section:hover {
  border-color: rgba(26, 92, 255, 0.3);
  box-shadow: 0 0 24px rgba(26, 92, 255, 0.08);
}
.privacy-section[data-privacy-section="security"]:hover {
  border-color: rgba(57, 255, 20, 0.25);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.06);
}
.privacy-section[data-privacy-section="contact"]:hover {
  border-color: rgba(123, 47, 247, 0.3);
  box-shadow: 0 0 24px rgba(123, 47, 247, 0.08);
}

/* ----- details / summary 折叠交互 ----- */
.privacy-details {
  display: block;
  width: 100%;
}
.privacy-details[open] .expand-indicator {
  transform: rotate(45deg);
  color: var(--color-accent, #1A5CFF);
}
.privacy-details[open] .privacy-section {
  border-color: var(--color-accent, #1A5CFF);
}

.privacy-summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 1rem);
  padding: var(--space-md, 2rem);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
}
.privacy-summary::-webkit-details-marker {
  display: none;
}
.privacy-summary:hover {
  background: rgba(255,255,255,0.02);
}
.privacy-summary:focus-visible {
  outline: 2px solid var(--color-accent, #1A5CFF);
  outline-offset: -2px;
  border-radius: var(--radius, 0.25rem);
}

.section-icon {
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
  width: 2.4rem;
  height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26, 92, 255, 0.1);
  border-radius: 50%;
  transition: background 0.3s, box-shadow 0.3s;
  box-shadow: 0 0 8px rgba(26, 92, 255, 0.15);
}
.privacy-section[data-privacy-section="security"] .section-icon {
  background: rgba(57, 255, 20, 0.08);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.12);
}
.privacy-section[data-privacy-section="contact"] .section-icon {
  background: rgba(123, 47, 247, 0.1);
  box-shadow: 0 0 8px rgba(123, 47, 247, 0.15);
}
.privacy-summary:hover .section-icon {
  background: rgba(26, 92, 255, 0.2);
  box-shadow: 0 0 16px rgba(26, 92, 255, 0.3);
}
.privacy-section[data-privacy-section="security"] .privacy-summary:hover .section-icon {
  background: rgba(57, 255, 20, 0.15);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.25);
}
.privacy-section[data-privacy-section="contact"] .privacy-summary:hover .section-icon {
  background: rgba(123, 47, 247, 0.2);
  box-shadow: 0 0 16px rgba(123, 47, 247, 0.3);
}

.section-heading {
  font-family: var(--font-heading, 'Space Grotesk', sans-serif);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--color-text, #FFFFFF);
  margin: 0;
  flex: 1;
  letter-spacing: -0.01em;
}

.expand-indicator {
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--color-text-secondary, #B3B3B3);
  flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s;
  line-height: 1;
}

/* ----- 折叠内容主体 ----- */
.section-body {
  padding: 0 var(--space-md, 2rem) var(--space-md, 2rem);
  animation: privacyFadeIn 0.4s ease;
}
@keyframes privacyFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.section-body p {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #B3B3B3);
  margin: 0 0 var(--space-sm, 1rem);
}
.section-body p:last-child {
  margin-bottom: 0;
}

.privacy-list {
  margin: 0 0 var(--space-sm, 1rem);
  padding: 0 0 0 1.5rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary, #B3B3B3);
  list-style: none;
}
.privacy-list li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
}
.privacy-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent, #1A5CFF);
  font-weight: 700;
}
.privacy-section[data-privacy-section="security"] .privacy-list li::before {
  color: var(--color-accent-highlight, #39FF14);
}
.privacy-section[data-privacy-section="contact"] .privacy-list li::before {
  color: var(--color-accent-secondary, #7B2FF7);
}
.privacy-list strong {
  color: var(--color-text, #FFFFFF);
  font-weight: 600;
}

.highlight-note {
  background: rgba(26, 92, 255, 0.06);
  border-left: 3px solid var(--color-accent, #1A5CFF);
  padding: 0.75rem var(--space-sm, 1rem);
  border-radius: 0 var(--radius, 0.25rem) var(--radius, 0.25rem) 0;
  margin-bottom: var(--space-sm, 1rem);
  font-size: 0.95rem;
}
.privacy-section[data-privacy-section="security"] .highlight-note {
  background: rgba(57, 255, 20, 0.05);
  border-left-color: var(--color-accent-highlight, #39FF14);
}
.privacy-section[data-privacy-section="contact"] .highlight-note {
  background: rgba(123, 47, 247, 0.06);
  border-left-color: var(--color-accent-secondary, #7B2FF7);
}

.section-body a {
  color: var(--color-accent, #1A5CFF);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s, text-shadow 0.2s;
}
.section-body a:hover {
  color: var(--color-accent-highlight, #39FF14);
  text-shadow: 0 0 8px rgba(57, 255, 20, 0.3);
  text-decoration: underline;
}

.contact-list li {
  padding-left: 0;
}
.contact-list li::before {
  display: none;
}

/* ----- 底部信任声明 ----- */
.privacy-footer-note {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: var(--space-xl, 4rem) auto 0;
  padding: 0 var(--space-sm, 1rem);
  text-align: center;
}
.privacy-trust {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  color: var(--color-text-secondary, #B3B3B3);
  background: var(--glass, rgba(255,255,255,0.05));
  padding: 0.6rem 1.2rem;
  border-radius: 2rem;
  border: 1px solid rgba(255,255,255,0.06);
}
.trust-icon {
  color: var(--color-accent, #1A5CFF);
  font-size: 1.1rem;
}
.privacy-update-note {
  margin: var(--space-md, 2rem) 0 0;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #B3B3B3);
  opacity: 0.6;
}

/* ===== 响应式 ===== */

/* 移动端窄屏 */
@media (max-width: 639px) {
  .page-privacy {
    padding-top: calc(var(--nav-height, 64px) + 1rem);
    padding-bottom: 2rem;
  }
  .breadcrumb {
    padding-bottom: var(--space-sm, 1rem);
    font-size: 0.8rem;
  }
  .privacy-hero {
    gap: var(--space-sm, 1rem);
    padding-bottom: var(--space-md, 2rem);
  }
  .privacy-hero-img {
    width: 90px;
    height: 90px;
  }
  .privacy-hero-text h1 {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }
  .privacy-intro-msg {
    font-size: 0.95rem;
    padding: var(--space-sm, 1rem);
  }
  .privacy-summary {
    padding: var(--space-sm, 1rem);
    gap: 0.75rem;
  }
  .section-icon {
    width: 2rem;
    height: 2rem;
    font-size: 1.2rem;
  }
  .section-heading {
    font-size: 1rem;
  }
  .expand-indicator {
    font-size: 1.3rem;
  }
  .section-body {
    padding: 0 var(--space-sm, 1rem) var(--space-sm, 1rem);
  }
  .privacy-list {
    padding-left: 1rem;
  }
  .privacy-list li {
    padding-left: 1rem;
  }
  .highlight-note {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }
  .privacy-trust {
    font-size: 0.78rem;
    padding: 0.5rem 1rem;
  }
}

/* 桌面宽屏 */
@media (min-width: 640px) {
  .privacy-hero {
    flex-direction: row;
    justify-content: center;
    text-align: left;
    gap: var(--space-lg, 3rem);
  }
  .privacy-hero-text {
    text-align: left;
  }
  .privacy-subtitle::after {
    margin: 0.75rem 0 0;
  }
  .privacy-summary {
    padding: var(--space-md, 2rem) var(--space-lg, 3rem);
  }
  .section-body {
    padding: 0 var(--space-lg, 3rem) var(--space-md, 2rem);
  }
  .privacy-content {
    gap: var(--space-lg, 3rem);
  }
  .privacy-intro {
    padding: 0 var(--space-lg, 3rem);
  }
  .privacy-footer-note {
    padding: 0 var(--space-lg, 3rem);
  }
}

/* 大桌面 */
@media (min-width: 1024px) {
  .privacy-hero-img {
    width: 150px;
    height: 150px;
  }
  .privacy-hero {
    gap: var(--space-xl, 4rem);
  }
  .privacy-section {
    backdrop-filter: blur(4px);
  }
}