body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  color: #222;
  line-height: 1.8;
  background: #f7f7f7;
}

.hero {
  background: #0f3f6f;
  color: #fff;
  padding: 48px 20px;
  text-align: center;
}

.area {
  font-size: 14px;
  margin-bottom: 12px;
}

h1 {
  font-size: 30px;
  line-height: 1.4;
  margin: 0 0 20px;
}

.lead {
  font-size: 17px;
  margin-bottom: 28px;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 16px 56px;
}

section {
  background: #fff;
  border-radius: 16px;
  padding: 24px;
  margin: 20px 0;
  box-shadow: 0 4px 14px rgba(0,0,0,0.06);
}

.campaign {
  border: 2px solid #ff7a00;
}

h2 {
  font-size: 22px;
  border-left: 6px solid #0f3f6f;
  padding-left: 12px;
  margin-top: 0;
}

.cta-area {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta {
  display: inline-block;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: bold;
  text-decoration: none;
  min-width: 220px;
  text-align: center;
}

.tel {
  background: #ff7a00;
  color: #fff;
}

.line {
  background: #06c755;
  color: #fff;
}

ul {
  padding-left: 20px;
}

footer {
  text-align: center;
  background: #0f3f6f;
  color: #fff;
  padding: 24px 16px;
}

@media (max-width: 600px) {
  h1 {
    font-size: 24px;
  }

  .hero {
    padding: 36px 16px;
  }

  section {
    padding: 20px;
  }

  .cta {
    width: 100%;
    box-sizing: border-box;
  }
}