*{box-sizing:border-box}
html,body{margin:0;padding:0;scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Sans","Noto Sans JP",sans-serif;
  background:
    radial-gradient(circle at top left, rgba(232,218,200,.45), transparent 28%),
    linear-gradient(180deg,#f8f5f0 0%,#f5f2ec 100%);
  color:#171717;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
button,input,select,textarea{font:inherit}
button{cursor:pointer}