/* 内容雷达官网 · 文档页样式（服务协议 / 隐私政策） */
:root {
  --accent: #FF3D00;
  --ink: #0A0A0A;
  --muted: #5A5A5A;
  --border: rgba(0,0,0,0.07);
  --card: #FFFFFF;
  --bg: #F5F7FA;
  --max: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "Inter", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.85; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* 顶栏 */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(245,247,250,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 17px; color: var(--ink); }
.logo .dot { width: 24px; height: 24px; border-radius: 50%; background: var(--accent); position: relative; }
.logo .dot::after { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: #fff; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 600; }
.nav-links a:hover { color: var(--ink); }

/* 协议 / 隐私正文 */
.doc {
  margin-top: 40px;
  margin-bottom: 64px;
  padding: 40px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
}

.doc .back {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

.doc h1 {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.doc .updated {
  margin: 12px 0 32px;
  color: var(--muted);
  font-size: 14px;
}

.doc h2 {
  margin: 36px 0 12px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.doc h3 {
  margin: 24px 0 8px;
  font-size: 16px;
  font-weight: 700;
}

.doc p, .doc li {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.doc p { margin: 10px 0; }

.doc ul, .doc ol {
  margin: 8px 0 16px;
  padding-left: 22px;
}

.doc li { margin: 6px 0; }

/* 页脚 */
footer {
  margin-top: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

footer .cols {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
}

footer .links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

footer .links a {
  color: var(--muted);
  font-size: 13px;
}

footer .meta {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

footer .meta a { color: var(--muted); }

@media (max-width: 720px) {
  .doc {
    margin-top: 20px;
    margin-bottom: 40px;
    padding: 24px 20px;
    border-radius: 12px;
  }
  .doc h1 { font-size: 24px; }
  .doc h2 { font-size: 18px; }
}