* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #f5f7fb;
  color: #1f2a44;
}

.hero,
.content {
  width: min(880px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 56px 0 24px;
}

.brand {
  margin: 0 0 12px;
  letter-spacing: 0.18em;
  color: #3d5a80;
  font-weight: 700;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
}

.lead,
.card li {
  line-height: 1.7;
  color: #4a5772;
}

.content {
  display: grid;
  gap: 16px;
  padding-bottom: 32px;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(16, 38, 84, 0.08);
  padding: 20px 24px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.card ul {
  margin: 0;
  padding-left: 18px;
}

.icp-footer {
  margin-top: auto;
  padding: 24px 16px 32px;
  text-align: center;
  color: #667085;
  font-size: 13px;
  background: #eef2f8;
}

.icp-footer p {
  margin: 6px 0;
}

.icp-footer a {
  color: #3451b2;
  text-decoration: none;
}

.icp-footer a:hover {
  text-decoration: underline;
}