body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", Arial, sans-serif;
  line-height: 1.7;
  color: #222;
  background: #fff;
}

/* 中央コンテンツ */
.container {
  width: 90%;
  max-width: 700px;
  margin: 0 auto;
  padding: 40px 0;
}

/* 見出し */
h1 {
  font-size: 40px;
  line-height: 1.4;
  margin-bottom: 20px;
}

h2 {
  font-size: 22px;
  margin-top: 60px;
  margin-bottom: 15px;
  border-left: 4px solid #111;
  padding-left: 10px;
}

/* 段落 */
p {
  font-size: 16px;
  margin-bottom: 15px;
  line-height: 1.8;
}

.lead {
  font-size: 16px;
}

/* リスト */
ul {
  padding-left: 20px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 8px;
}

.btn {
  display: inline-block;
  max-width: 100%;
  box-sizing: border-box;
  white-space: nowrap;

  margin-top: 50px;
  padding: 15px 28px;
  background: #111;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;

  font-weight: bold;
  text-align: center;
  position: relative;

  box-shadow: 0 4px 0 #c0c0c0;
  transition: 0.1s;
}

.btn:hover {
  transform: translateY(4px);
  box-shadow: none;
}

.box {
  box-sizing: border-box;
}


/* プロフBOX */
.profile-box {
  border: 1px solid #ddd;
  padding: 16px;
  border-radius: 8px;
  background: #fafafa;
  margin: 20px 0;
}

.profile-box p {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.7;
  color: #333;
}

.profile-box p:last-child {
  margin-bottom: 0;
  font-size: 14px;
  color: #666;
}

.footer {
  text-align: center;
  margin-top: 60px;
  padding: 20px 0;
  font-size: 12px;
  color: #999;
}

.footer p {
  font-size: 12px;
  margin: 0 0 8px;
}

.footer a {
  color: inherit;
  text-decoration: none;
}

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

/* スマホ対応 */
@media screen and (max-width: 768px) {
  h1 {
    font-size: 27px;
  }

  h2 {
    font-size: 18px;
  }

  .container {
    padding: 25px 0;
  }

 .btn {
    display: block;
    width: 100%;
    white-space: normal;
}