CSSで色・余白・レイアウトを整える

styles.css全文：色、余白、カードとスマートフォンの配置を定義

*{
  box-sizing:border-box
}
html{
  scroll-behavior:smooth
}
body{
  margin:0;
  font-family:system-ui,sans-serif;
  color:#302a24;
  background:#fffdf8;
  line-height:1.9
}
a{
  color:#784725;
  text-underline-offset:4px
}
a:focus-visible{
  outline:3px solid #2867c8;
  outline-offset:5px
}
.site-header{
  display:flex;
  justify-content:space-between;
  gap:20px;
  padding:22px 6%;
  border-bottom:1px solid #dccdbb
}
.site-header>a{
  font-weight:800;
  text-decoration:none
}
.site-header nav{
  display:flex;
  gap:24px;
  flex-wrap:wrap
}
main{
  width:min(100% - 40px,1000px);
  margin:auto
}
section{
  padding:60px 0;
  scroll-margin-top:25px
}
h1{
  font-size:clamp(32px,6vw,60px);
  line-height:1.4
}
h2{
  font-size:28px
}
h3{
  font-size:21px
}
.label{
  color:#875e37;
  font-size:14px;
  font-weight:700
}
.intro img{
  display:block;
  width:100%;
  height:auto;
  border-radius:14px;
  margin-top:35px
}
.cta{
  display:inline-block;
  background:#70452c;
  color:white;
  padding:12px 22px;
  border-radius:6px;
  text-decoration:none
}
.menu-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
  list-style:none;
  padding:0
}
.menu-grid li{
  padding:25px;
  border:1px solid #dccdbb;
  border-radius:10px;
  background:white
}
dl{
  display:grid;
  grid-template-columns:160px 1fr
}
dt,dd{
  padding:14px;
  border-bottom:1px solid #dccdbb;
  margin:0
}
dt{
  font-weight:700
}
footer{
  padding:35px 6%;
  background:#eee4d5
}
@media(max-width:640px){
  .site-header{
  display:block
}
.site-header nav{
  margin-top:15px;
  gap:18px
}
.menu-grid{
  grid-template-columns:1fr
}
section{
  padding:38px 0
}
dl{
  grid-template-columns:1fr
}
dt{
  border-bottom:0;
  padding-bottom:0
}
dd{
  padding-top:6px
}

}
@media(prefers-reduced-motion:reduce){
  html{
  scroll-behavior:auto
}

}