/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  line-height: 1.6;
  color: #251D03;
  background-color: #FFFFFF;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  opacity: 1;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* Container */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Main Content */
.main-content {
  padding-top: 75px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  html {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
  
  html {
    font-size: 13px;
  }
}