body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  margin: 0;
  padding: 0;
  background: #fafafa;
  color: #333;
  line-height: 1.7;
}

.site-header {
  background: #2d6a4f;
  color: #fff;
  text-align: center;
  padding: 20px 10px;
}
.site-title {
  margin: 0;
  font-size: 1.8em;
}

main {
  max-width: 900px;
  margin: 20px auto;
  padding: 0 16px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

section {
  margin: 30px 0;
}

h2 {
  font-size: 1.4em;
  margin-bottom: 12px;
  color: #2d6a4f;
}

.intro p {
  margin: 0;
}

.example-img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 16px auto;
  border: 1px solid #ccc;
  border-radius: 8px;
}

.example-steps {
  list-style: disc;
  padding-left: 20px;
}

.usage ol {
  padding-left: 20px;
}
.usage li {
  margin-bottom: 10px;
}

.note {
  font-size: 0.9em;
  color: #666;
  margin-top: 10px;
}

.btn-area {
  text-align: center;
  margin: 30px 0;
}
.btn-primary {
  display: inline-block;
  background: #2d6a4f;
  color: #fff;
  padding: 12px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
}
.btn-primary:hover {
  background: #1b4332;
}

.site-footer {
  text-align: center;
  padding: 15px 0;
  font-size: 0.9em;
  background: #f5f5f5;
  margin-top: 30px;
}

/* 見本画像のサイズ調整 */
.example-img {
  display: block;
  max-width: 300px;  /* PC表示時の最大幅を600pxに制限 */
  width: 100%;       /* 画面幅いっぱいまで広げる（ただしmax-widthの範囲内） */
  height: auto;
  margin: 16px auto;
  border: 1px solid #ccc;
  border-radius: 8px;
}