/* 图尺 · 首页宣传页 */
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: linear-gradient(160deg, #f5f7fa 0%, #e8ecf1 100%);
  color: #1a1a1a;
  font-size: 15px;
  line-height: 1.6;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}
.hero {
  text-align: center;
  margin-bottom: 40px;
}
.hero h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.hero .tagline {
  font-size: 16px;
  color: #555;
  margin: 0;
}
.card {
  background: #fff;
  border: 1px solid #e0e4e8;
  border-radius: 8px;
  padding: 24px 28px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}
.card h2 {
  font-size: 16px;
  margin: 0 0 12px;
  font-weight: 600;
}
.card ul {
  margin: 0;
  padding-left: 20px;
}
.card li { margin-bottom: 6px; }
.footer {
  text-align: center;
  font-size: 13px;
  color: #888;
  margin-top: 32px;
}