*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  padding-top: 100px;
  font-family:var(--font-sans);
  background:var(--color-bg);               /* 전체 배경 완전 블랙 */
  color:var(--color-text);
  line-height:1.6;
  font-weight:300;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:opacity .3s ease}
a:hover{opacity:.6}

.skip-link{
  position:absolute;top:-100%;left:0;
  background:var(--color-text);
  color:#000;
  padding:1rem;z-index:1000;
}
.skip-link:focus{top:0}

/* 페이지별 그레인 끄고 싶을 때 */
body.no-grain .grain{display:none !important}