/* ===== 页面专属：隐私政策 ===== */
.page-privacy {
  --privacy-hero-bg-start: #1A3A5C;
  --privacy-hero-bg-end: #0D0D0D;
  --privacy-card-bg: #FFFFFF;
  --privacy-border-accent: #E53935;
  --privacy-section-hover-border: #4CAF50;
  --privacy-num-color: #FFD700;
  --privacy-summary-focus: #2B5A8C;

  font-family: var(--font-body);
  color: var(--color-neutral-dark);
  background-color: var(--color-neutral-light);
  line-height: 1.7;
  padding: 0 calc(var(--space-unit) * 2);
}

/* ---- 面包屑 ---- */
.privacy-breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--space-unit) * 2) 0 calc(var(--space-unit) * 1);
  font-size: calc(var(--base-size) - 4px);
  color: var(--color-primary-light);
}
.privacy-breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 1);
}
.privacy-breadcrumb li {
  display: flex;
  align-items: center;
  gap: calc(var(--space-unit) * 1);
}
.privacy-breadcrumb li + li::before {
  content: "›";
  color: var(--color-highlight);
  font-weight: 700;
  font-size: 1.2em;
}
.privacy-breadcrumb a {
  color: var(--color-primary-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.privacy-breadcrumb a:hover,
.privacy-breadcrumb a:focus-visible {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}
.privacy-breadcrumb [aria-current="page"] {
  color: var(--color-neutral-dark);
  font-weight: 600;
}

/* ---- 英雄区 ---- */
.privacy-hero {
  max-width: var(--max-width);
  margin: 0 auto;
  background: linear-gradient(135deg, var(--privacy-hero-bg-start), var(--privacy-hero-bg-end));
  border-radius: var(--radius);
  box-shadow: var(--shadow-strong);
  border: var(--border-width) solid var(--color-primary-light);
  overflow: hidden;
}
.privacy-hero__inner {
  display: flex;
  flex-direction: column;
  padding: calc(var(--space-unit) * 4) calc(var(--space-unit) * 3);
  gap: calc(var(--space-unit) * 3);
}
.privacy-hero__text {
  color: var(--color-neutral-light);
  flex: 1 1 60%;
}
.privacy-hero__lock {
  color: var(--color-highlight);
  margin-bottom: calc(var(--space-unit) * 1);
  display: block;
}
.privacy-hero h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2rem, 6vw, 3.2rem);
  color: var(--color-neutral-light);
  margin: 0 0 calc(var(--space-unit) * 1) 0;
  line-height: 1.15;
  letter-spacing: 0.02em;
}
.privacy-hero__sub {
  font-size: calc(var(--base-size) - 2px);
  color: var(--color-highlight);
  margin: 0 0 calc(var(--space-unit) * 2) 0;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.privacy-hero__desc {
  font-size: var(--base-size);
  color: rgba(255, 255, 255, 0.88);
  max-width: 56ch;
  margin: 0 0 calc(var(--space-unit) * 3) 0;
  line-height: 1.65;
}
.privacy-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 2);
}
.privacy-hero__actions .btn {
  font-size: calc(var(--base-size) - 2px);
  padding: calc(var(--space-unit) * 1.5) calc(var(--space-unit) * 3);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
  border: none;
  font-weight: 600;
}
.privacy-hero__actions .btn-secondary {
  background-color: var(--color-secondary);
  color: #fff;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.25);
}
.privacy-hero__actions .btn-secondary:hover,
.privacy-hero__actions .btn-secondary:focus-visible {
  background-color: #3d9142;
  transform: translate(-1px, -1px);
  box-shadow: 6px 6px 0 rgba(0,0,0,0.3);
}
.privacy-hero__visual {
  flex: 1 1 35%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: calc(var(--space-unit) * 2);
}
.privacy-hero__img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 2px solid var(--color-highlight);
  box-shadow: 4px 4px 0 rgba(0,0,0,0.3);
  object-fit: cover;
  display: block;
}
.privacy-hero__wave {
  color: var(--color-highlight);
  width: 100%;
  max-width: 300px;
  height: auto;
  opacity: 0.7;
}

/* ---- 章节容器 ---- */
.privacy-sections {
  max-width: var(--max-width);
  margin: calc(var(--space-unit) * 4) auto;
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-unit) * 3);
}

/* ---- 单个章节 (可展开) ---- */
.privacy-section {
  background-color: var(--privacy-card-bg);
  border: var(--border-width) solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow-strong);
  overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.privacy-section:hover {
  border-color: var(--privacy-section-hover-border);
  box-shadow: 6px 6px 0 rgba(0,0,0,0.2);
}
.privacy-section[open] {
  border-color: var(--privacy-section-hover-border);
}

/* 章节标题 (summary) */
.privacy-section__header {
  display: flex;
  align-items: center;
  gap: calc(var(--space-unit) * 2);
  padding: calc(var(--space-unit) * 2.5) calc(var(--space-unit) * 3);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color 0.2s;
}
.privacy-section__header::-webkit-details-marker {
  display: none;
}
.privacy-section__header:hover,
.privacy-section__header:focus-visible {
  background-color: rgba(26, 58, 92, 0.04);
}
.privacy-section__header:focus-visible {
  outline: 2px solid var(--privacy-summary-focus);
  outline-offset: -2px;
}
.privacy-section__num {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: 1.6rem;
  color: var(--privacy-num-color);
  line-height: 1;
  min-width: 2.4rem;
  text-shadow: 1px 1px 0 rgba(0,0,0,0.08);
}
.privacy-section__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: calc(var(--base-size) + 4px);
  color: var(--color-primary);
  flex: 1;
  letter-spacing: 0.02em;
}
.privacy-section__chevron {
  color: var(--color-primary-light);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.privacy-section[open] .privacy-section__chevron {
  transform: rotate(180deg);
}

/* 章节内容体 */
.privacy-section__body {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-unit) * 2.5);
  padding: 0 calc(var(--space-unit) * 3) calc(var(--space-unit) * 3);
  border-top: 1px solid rgba(26, 58, 92, 0.12);
  padding-top: calc(var(--space-unit) * 2.5);
}
.privacy-section__icon {
  color: var(--color-primary-light);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background-color: rgba(76, 175, 80, 0.08);
  border: 1px solid rgba(76, 175, 80, 0.2);
}
.privacy-section__icon svg {
  width: 40px;
  height: 40px;
}
.privacy-section__content {
  flex: 1;
  font-size: var(--base-size);
  color: var(--color-neutral-dark);
}
.privacy-section__content p {
  margin: 0 0 calc(var(--space-unit) * 1.5) 0;
}
.privacy-section__content p:last-child {
  margin-bottom: 0;
}
.privacy-section__content a {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.privacy-section__content a:hover,
.privacy-section__content a:focus-visible {
  color: var(--color-accent);
}

/* ---- 底部信息区 ---- */
.privacy-extra {
  max-width: var(--max-width);
  margin: 0 auto calc(var(--space-unit) * 5);
}
.privacy-extra__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: calc(var(--space-unit) * 2.5);
  padding: calc(var(--space-unit) * 3);
  background-color: var(--privacy-card-bg);
  border: var(--border-width) solid var(--color-primary-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-strong);
  text-align: center;
}
.privacy-extra__statement {
  font-size: calc(var(--base-size) - 2px);
  color: var(--color-primary-light);
  margin: 0;
  max-width: 50ch;
}
.privacy-extra__links {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space-unit) * 2);
  justify-content: center;
}
.privacy-extra__links .btn-outline {
  display: inline-block;
  padding: calc(var(--space-unit) * 1.2) calc(var(--space-unit) * 3);
  font-size: calc(var(--base-size) - 2px);
  font-weight: 600;
  color: var(--color-primary);
  background-color: transparent;
  border: var(--border-width) solid var(--color-primary);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 3px 3px 0 rgba(0,0,0,0.1);
}
.privacy-extra__links .btn-outline:hover,
.privacy-extra__links .btn-outline:focus-visible {
  background-color: var(--color-primary);
  color: #fff;
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 rgba(0,0,0,0.18);
}

/* ---- 底部装饰线 ---- */
.privacy-divider {
  max-width: var(--max-width);
  margin: 0 auto calc(var(--space-unit) * 2);
  color: var(--color-primary-light);
  opacity: 0.5;
  pointer-events: none;
}

/* ========== 响应式 ========== */
/* 移动端优先 —— 以上为基础样式，适应窄屏 */

/* 平板及桌面 (≥768px) */
@media screen and (min-width: 768px) {
  .page-privacy {
    padding: 0 calc(var(--space-unit) * 4);
  }
  .privacy-hero__inner {
    flex-direction: row;
    align-items: center;
    padding: calc(var(--space-unit) * 5) calc(var(--space-unit) * 4);
  }
  .privacy-hero__visual {
    align-items: flex-end;
  }
  .privacy-hero__img {
    width: 300px;
    height: 200px;
  }
  .privacy-hero__wave {
    max-width: 260px;
  }
  .privacy-section__body {
    flex-direction: row;
    align-items: flex-start;
  }
  .privacy-section__icon {
    width: 64px;
    height: 64px;
    margin-top: calc(var(--space-unit) * 1);
  }
  .privacy-section__icon svg {
    width: 44px;
    height: 44px;
  }
  .privacy-section__title {
    font-size: calc(var(--base-size) + 8px);
  }
  .privacy-section__num {
    font-size: 2rem;
  }
  .privacy-extra__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    padding: calc(var(--space-unit) * 3) calc(var(--space-unit) * 4);
  }
  .privacy-extra__statement {
    text-align: left;
  }
  .privacy-divider svg {
    height: 48px;
  }
}

/* 大桌面 (≥1024px) */
@media screen and (min-width: 1024px) {
  .privacy-hero__inner {
    padding: calc(var(--space-unit) * 6) calc(var(--space-unit) * 5);
  }
  .privacy-hero h1 {
    font-size: 3.6rem;
  }
  .privacy-hero__sub {
    font-size: var(--base-size);
  }
  .privacy-section {
    border-width: calc(var(--border-width) + 1px);
  }
  .privacy-section__header {
    padding: calc(var(--space-unit) * 3) calc(var(--space-unit) * 4);
  }
  .privacy-section__body {
    padding: calc(var(--space-unit) * 3) calc(var(--space-unit) * 4);
  }
  .privacy-section__content {
    font-size: calc(var(--base-size) + 1px);
  }
}

/* 打印样式 */
@media print {
  .page-privacy {
    background: #fff;
    color: #000;
    padding: 1in 0.5in;
    --shadow-strong: none;
  }
  .privacy-hero {
    background: #f0f0f0 !important;
    border: 1px solid #333;
    box-shadow: none;
  }
  .privacy-hero__text {
    color: #000 !important;
  }
  .privacy-hero h1 {
    color: #000 !important;
  }
  .privacy-hero__sub {
    color: #555 !important;
  }
  .privacy-hero__desc {
    color: #222 !important;
  }
  .privacy-hero__actions .btn {
    display: none;
  }
  .privacy-section {
    break-inside: avoid;
    border-color: #333;
    box-shadow: none;
  }
  .privacy-section__num {
    color: #333 !important;
    text-shadow: none;
  }
  .privacy-section__title {
    color: #000 !important;
  }
  .privacy-section__chevron {
    display: none;
  }
  .privacy-divider {
    display: none;
  }
  .privacy-extra__inner {
    border-color: #333;
    box-shadow: none;
  }
  .privacy-breadcrumb a {
    color: #333;
  }
  .privacy-breadcrumb [aria-current="page"] {
    color: #000;
  }
}