/* ===== 数据与隐私 · 页面专属样式（作用域 .page-privacy） ===== */

.page-privacy {
  --privacy-scope-rule: var(--line-600);
  --privacy-cyan-wash: rgba(59, 224, 209, 0.08);
  --privacy-amber-wash: rgba(255, 180, 58, 0.07);
  background: var(--void-000);
  color: var(--paper-000);
}

/* ---------- 首屏 ---------- */

.page-privacy .privacy-hero {
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-privacy .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate-500);
  margin-bottom: clamp(28px, 5vw, 52px);
}

.page-privacy .breadcrumb a {
  color: var(--paper-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-privacy .breadcrumb a:hover {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-privacy .breadcrumb [aria-current="page"] {
  color: var(--cyan-400);
}

.page-privacy .privacy-hero__top {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-privacy .privacy-hero__main {
  min-width: 0;
  max-width: 62ch;
}

.page-privacy .privacy-hero__main .index {
  display: block;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan-400);
  margin: 0;
}

.page-privacy .privacy-hero h1 {
  margin: 18px 0 0;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--paper-000);
}

.page-privacy .privacy-hero .lede {
  margin: 20px 0 0;
  max-width: 44ch;
  font-size: clamp(15px, 3.4vw, 19px);
  line-height: 1.8;
  color: var(--paper-400);
}

.page-privacy .privacy-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
}

.page-privacy .stamp {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  padding: 8px 16px;
  border: 1px solid var(--amber-700);
  border-radius: var(--radius-pill);
  background: var(--privacy-amber-wash);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--amber-400);
  white-space: nowrap;
}

.page-privacy .stamp__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber-400);
  flex: none;
}

.page-privacy .stamp__time {
  color: var(--amber-400);
}

.page-privacy .privacy-hero__figure {
  margin: clamp(40px, 7vw, 72px) 0 0;
}

.page-privacy .privacy-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
}

.page-privacy .privacy-hero__figure .figure__caption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-500);
  max-width: 60ch;
}

/* ---------- 目录 + 正文双栏 ---------- */

.page-privacy .privacy-body {
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-privacy .privacy-grid {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
  align-items: start;
}

.page-privacy .privacy-toc__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate-500);
}

.page-privacy .privacy-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-privacy .privacy-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 8px 14px;
  border: 1px solid var(--privacy-scope-rule);
  border-radius: var(--radius-pill);
  color: var(--paper-400);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-privacy .privacy-toc__link .mono {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--slate-500);
  transition: color 0.2s var(--ease);
}

@media (max-width: 959px) {
  .page-privacy .privacy-toc__link.is-active {
    background: var(--privacy-cyan-wash);
  }
}

.page-privacy .privacy-toc__link:hover,
.page-privacy .privacy-toc__link.is-active {
  color: var(--cyan-400);
  border-color: var(--cyan-700);
}

.page-privacy .privacy-toc__link:hover .mono,
.page-privacy .privacy-toc__link.is-active .mono {
  color: var(--cyan-400);
}

.page-privacy .privacy-main {
  min-width: 0;
}

/* ---------- 正文章节 ---------- */

.page-privacy .privacy-sec {
  padding: clamp(34px, 5vw, 56px) 0;
  border-top: 1px solid var(--privacy-scope-rule);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-privacy .privacy-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-privacy .privacy-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 20px;
}

.page-privacy .privacy-sec__head .index {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-privacy .privacy-sec h2 {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--paper-000);
}

.page-privacy .privacy-sec__body > p {
  margin: 0 0 18px;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper-400);
}

.page-privacy .privacy-sec__body > p:last-child {
  margin-bottom: 0;
}

/* ---------- 四类信息 ---------- */

.page-privacy .cat-grid {
  display: grid;
  gap: 0;
  margin: 26px 0 6px;
}

.page-privacy .cat {
  display: grid;
  gap: 9px;
  padding: 20px 0 20px 20px;
  border-left: 2px solid var(--privacy-scope-rule);
  transition: border-color 0.2s var(--ease);
}

.page-privacy .cat--amber {
  border-left-color: var(--amber-700);
}

@media (hover: hover) {
  .page-privacy .cat:hover {
    border-left-color: var(--cyan-400);
  }
  .page-privacy .cat--amber:hover {
    border-left-color: var(--amber-400);
  }
}

.page-privacy .cat__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-privacy .cat--amber .cat__tag {
  color: var(--amber-400);
}

.page-privacy .cat__text {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-400);
}

/* ---------- 保留期限清单 ---------- */

.page-privacy .fact-list {
  list-style: none;
  margin: 8px 0 24px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-privacy .fact-list__item {
  display: grid;
  gap: 7px;
  padding: 18px 0;
  border-bottom: 1px solid var(--privacy-scope-rule);
}

.page-privacy .fact-list__key {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-privacy .fact-list__item--amber .fact-list__key {
  color: var(--amber-400);
}

.page-privacy .fact-list__val {
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-400);
}

/* ---------- 折叠条款 ---------- */

.page-privacy .privacy-fold {
  margin-top: 20px;
  border: 1px solid var(--privacy-scope-rule);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  overflow: hidden;
}

.page-privacy .privacy-fold > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper-000);
  transition: color 0.2s var(--ease);
}

.page-privacy .privacy-fold > summary::-webkit-details-marker {
  display: none;
}

.page-privacy .privacy-fold > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-privacy .privacy-fold[open] > summary::after {
  content: "–";
}

.page-privacy .privacy-fold > summary:hover {
  color: var(--cyan-400);
}

.page-privacy .privacy-fold .fold__body {
  padding: 0 20px 20px;
  margin: 0;
  border-top: 1px solid var(--privacy-scope-rule);
}

.page-privacy .privacy-fold .fold__body p {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--paper-400);
}

/* ---------- 邮箱与复制 ---------- */

.page-privacy .privacy-email {
  font-family: var(--font-mono);
  font-size: clamp(13px, 3.2vw, 16px);
  letter-spacing: 0.02em;
  color: var(--cyan-400);
  word-break: break-all;
}

.page-privacy .copy-row {
  margin: 0 0 18px;
}

.page-privacy .copy-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 18px;
  border: 1px solid var(--privacy-scope-rule);
  border-radius: var(--radius-pill);
  background: var(--ink-800);
  color: var(--paper-400);
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-privacy .copy-btn:hover {
  color: var(--cyan-400);
  border-color: var(--cyan-700);
}

.page-privacy .copy-btn.is-copied {
  color: var(--amber-400);
  border-color: var(--amber-700);
}

/* ---------- 提示块与返回顶部 ---------- */

.page-privacy .privacy-note {
  margin-top: 26px;
  padding: 20px 22px;
  border-left: 3px solid var(--amber-700);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(90deg, var(--privacy-amber-wash), transparent 72%);
}

.page-privacy .privacy-note p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--paper-400);
}

.page-privacy .privacy-backtop {
  margin-top: clamp(38px, 6vw, 64px);
  padding-top: 28px;
  border-top: 1px solid var(--privacy-scope-rule);
}

.page-privacy .privacy-backtop .btn {
  white-space: nowrap;
}

/* ---------- 平板及以上 ---------- */

@media (min-width: 720px) {
  .page-privacy .cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 48px);
  }

  .page-privacy .fact-list__item {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

/* ---------- 桌面：左侧常驻目录 ---------- */

@media (min-width: 960px) {
  .page-privacy .privacy-hero {
    padding-top: calc(var(--header-h) + 64px);
  }

  .page-privacy .privacy-hero__top {
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    gap: clamp(32px, 6vw, 80px);
  }

  .page-privacy .privacy-hero__main {
    flex: 1 1 auto;
  }

  .page-privacy .privacy-hero__meta {
    flex: none;
    padding-top: 6px;
  }

  .page-privacy .privacy-grid {
    grid-template-columns: minmax(150px, 200px) minmax(0, 1fr);
    column-gap: clamp(40px, 7vw, 108px);
  }

  .page-privacy .privacy-toc {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-privacy .privacy-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-privacy .privacy-toc__link {
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--privacy-scope-rule);
    border-radius: 0;
    padding: 11px 0;
    background: none;
    font-size: 13.5px;
  }

  .page-privacy .privacy-main {
    max-width: 720px;
  }
}

/* ---------- 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-toc__link,
  .page-privacy .cat,
  .page-privacy .copy-btn,
  .page-privacy .breadcrumb a,
  .page-privacy .privacy-fold > summary {
    transition: none;
  }
}
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