:root {
  --brand: #3b5bdb;
  --brand-dark: #2f49b0;
  --brand-soft: #eef1ff;
  --ink: #1c2333;
  --ink-2: #4a5468;
  --muted: #7b8496;
  --line: #e6e9f2;
  --bg: #f7f8fc;
  --white: #fff;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(28, 35, 51, .06);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--bg); padding: 2px 6px; border-radius: 6px; font-size: 13px; }
.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 800px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* 顶栏 */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.logo { width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--brand), #6b8cff); color: #fff; display: grid; place-items: center; font-weight: 700; }
.logo-img { width: 34px; height: 34px; border-radius: 10px; display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text b { font-size: 16px; }
.brand-text small { font-size: 11px; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 15px; }
.nav-links a { color: var(--ink-2); }
.nav-links a.on { color: var(--brand); font-weight: 600; }

/* 按钮 */
.btn {
  display: inline-block; background: var(--brand); color: #fff !important; padding: 10px 18px;
  border-radius: 10px; border: 0; cursor: pointer; font-size: 15px; font-weight: 600; text-align: center;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; }
.btn-sm { padding: 6px 12px; font-size: 14px; border-radius: 8px; }
.btn-lg { padding: 13px 26px; font-size: 16px; }
.btn.ghost { background: var(--brand-soft); color: var(--brand) !important; }
.btn.ghost:hover { background: #e2e8ff; }

/* 首屏 */
.hero { background: linear-gradient(180deg, var(--brand-soft), #fff 80%); padding: 56px 0 40px; }
.hero-inner { display: flex; align-items: center; gap: 40px; }
.hero-text { flex: 1.2; }
.hero-text h1 { font-size: 40px; line-height: 1.25; margin: 14px 0 12px; letter-spacing: -.5px; }
.hero-text .lead { color: var(--ink-2); font-size: 16px; margin: 0 0 24px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.tag { display: inline-block; background: #fff; color: var(--brand); border: 1px solid #d6ddff; padding: 5px 12px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.hero-card { flex: .8; display: flex; justify-content: center; }
.phone { width: 250px; background: #fff; border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); padding: 12px; }
.phone-bar { display: flex; gap: 5px; padding: 2px 4px 10px; }
.phone-bar i { width: 8px; height: 8px; border-radius: 50%; background: #dde2f0; }
.phone-body { background: var(--bg); border-radius: 16px; padding: 14px; }
.mini-title { font-weight: 700; margin-bottom: 8px; }
.mini-progress { height: 8px; background: #e5e8f4; border-radius: 99px; overflow: hidden; margin-bottom: 12px; }
.mini-progress span { display: block; height: 100%; background: var(--brand); }
.mini-row { background: #fff; border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
.mini-row em { font-style: normal; color: var(--muted); font-size: 12px; }

/* 区块 */
.section { padding: 52px 0; }
.section.alt { background: var(--bg); }
.section h2 { font-size: 26px; margin: 0 0 8px; }
.page-title { font-size: 30px; margin: 0 0 10px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 22px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--ink-2); font-size: 14px; }
.two-col { display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: start; }

/* 公告 */
.news { list-style: none; padding: 0; margin: 16px 0 0; }
.news-item { border-bottom: 1px dashed var(--line); padding: 14px 0; }
.news-item:last-child { border-bottom: 0; }
.news-item b { font-size: 16px; }
.news-item p { margin: 4px 0 0; color: var(--ink-2); font-size: 14px; }
.news-item .muted { margin-left: 10px; font-size: 13px; }
.pill { background: var(--brand-soft); color: var(--brand); font-size: 12px; padding: 2px 8px; border-radius: 99px; margin-left: 8px; }
.pager { display: flex; gap: 8px; margin-top: 20px; }
.pager a { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-2); }
.pager a.on { background: var(--brand); border-color: var(--brand); color: #fff; }
.crumb { font-size: 13px; color: var(--muted); }

/* 隐私政策信息条（版本号 / 生效日期 / 编辑日期） */
.policy-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0 6px; }
.policy-meta .meta-item {
  background: #eef1ff; color: var(--brand); border: 1px solid #dbe2ff; border-radius: 999px;
  padding: 5px 12px; font-size: 13px;
}
.policy-meta .meta-item b { color: var(--brand); }

/* 富文本 */
.rich { margin-top: 18px; color: var(--ink-2); line-height: 1.9; font-size: 15px; }
.rich h3 { color: var(--ink); font-size: 16px; margin: 26px 0 10px; padding-left: 10px; border-left: 3px solid var(--brand); }
.rich h3:first-child { margin-top: 4px; }
.rich h4 { color: var(--ink); font-size: 15px; margin: 20px 0 8px; }
.rich p { margin: 0 0 12px; }
.rich ul, .rich ol { padding-left: 22px; margin: 0 0 14px; }
.rich li { margin-bottom: 6px; }
.rich strong, .rich b { color: var(--ink); }
.rich blockquote { margin: 0 0 14px; padding: 8px 14px; background: #f7f8fc; border-left: 3px solid var(--line); color: var(--ink-2); }

/* 下载区 */
.download-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.steps { padding-left: 20px; color: var(--ink-2); font-size: 14px; }
.steps li { margin-bottom: 8px; }

/* 表单 */
.form { margin-top: 20px; }
.form label { display: block; margin-bottom: 16px; font-weight: 600; font-size: 14px; }
.form input, .form textarea {
  width: 100%; margin-top: 6px; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; font-weight: 400; background: #fff; color: var(--ink); resize: vertical;
}
.form input:focus, .form textarea:focus { outline: 2px solid #c9d4ff; border-color: var(--brand); }
.req { color: #e03131; }
.ok { background: #e7f8ee; border: 1px solid #b7e6ca; color: #1c7c47; padding: 14px 16px; border-radius: 10px; margin-top: 18px; }
.tbl { width: 100%; border-collapse: collapse; margin-top: 18px; }
.tbl th, .tbl td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; font-size: 14px; }
.tbl th { background: var(--bg); }

/* 页脚 */
.footer { border-top: 1px solid var(--line); background: var(--bg); padding: 34px 0 20px; margin-top: 20px; }
.footer-inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer b { font-size: 16px; }
.footer p { margin: 4px 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 16px; align-items: flex-start; font-size: 14px; }
.copyright { margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.copyright a { color: var(--muted); }
.copyright a:hover { color: var(--brand); text-decoration: underline; }

@media (max-width: 860px) {
  .hero-inner, .two-col { flex-direction: column; display: flex; }
  .grid { grid-template-columns: 1fr; }
  .hero-text h1 { font-size: 30px; }
  .nav-links { gap: 12px; font-size: 14px; }
  .nav-links a.btn { display: none; }
}