* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
    sans-serif;
}

body {
  background-color: #f8f8f8;
  color: #333;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5px;
}
a {
  text-emphasis: none;
  text-decoration: none;
  color: inherit;
}
a:link {
  font-size: 14px;
}

.hide {
  display: none !important;
}

/* ヘッダー */
header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: #3a7db8;
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo i {
  margin-right: 10px;
}

/* フッター */
footer {
  background-color: #2c3e50;
  color: #fff;
  padding: 60px 0 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-column h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: #3a7db8;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 10px;
}

.footer-column ul li a {
  color: #ccc;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-column ul li a:hover {
  color: #3a7db8;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #3a506b;
  color: #ccc;
  font-size: 0.9rem;
}

.product-img img {
  width: 100%;
}

@media (max-width: 576px) {
  a:link,p,div {
    font-size: 12px;
  }

}