body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f8fa;
  color: #222;
}

.container {
  max-width: 900px;
  margin: 80px auto;
  padding: 0 24px;
}

.hero {
  background: #fff;
  border: 1px solid #dfe5eb;
  border-radius: 16px;
  padding: 56px 48px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .05);
}

.hero h1 {
  margin: 0;
  font-size: 38px;
  letter-spacing: .02em;
}

.subtitle {
  margin-top: 8px;
  color: #667;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0;
}

.keywords span {
  padding: 7px 14px;
  border-radius: 999px;
  background: #edf4fb;
  color: #174a78;
  border: 1px solid #cbdced;
}

.intro {
  margin-top: 40px;
  max-width: 700px;
  line-height: 1.9;
  font-size: 17px;
}

.notice {
  margin-top: 40px;
  color: #667;
  font-size: 14px;
}

.button {
  display: inline-block;
  margin-top: 16px;
  padding: 12px 22px;
  border-radius: 8px;
  background: #315f8c;
  color: white;
  text-decoration: none;
}

.button:hover {
  background: #244a70;
}

.header {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 24px 0;
  text-align: right;
}

.header p {
  margin: 0;
}

.header a {
  color: #667;
  font-size: 14px;
  text-decoration: none;
}

.header a:hover {
  color: #315f8c;
}