/* 既存の細線・幾何学の語彙を、選んだ章の背景余白にだけ添える。 */
:is(#philosophy,#work,#team,#people,#strength-two,#stations-2)::before {
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background-repeat:no-repeat;
  background-position:center;
  background-size:100% 100%;
  pointer-events:none;
}
:is(#philosophy,#work,#team)::before {
  background-image:url("../images/section-dots.svg");
}
:is(#people,#strength-two,#stations-2)::before {
  background-image:url("../images/section-lines.svg");
}