.orc-lectures, .orc-lectures * { box-sizing: border-box; }
.orc-lectures { width: 100%; margin: 0; padding: 54px 0 150px; color: #111; background: #fff; font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif; font-weight: 400; }
.orc-lectures__heading { width: max-content; max-width: calc(100% - 30px); margin: 0 auto 75px; padding: 5px 7px; border-top: 1px solid #193d7b; border-bottom: 1px solid #193d7b; color: #193d7b; font-size: 19px; line-height: 1.35; font-weight: 700; letter-spacing: .07em; text-align: center; }
.orc-lectures__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 125px 112px; width: calc(100% - 48px); max-width: 1180px; margin: 0 auto; }
.orc-lecture { min-width: 0; margin: 0; }
.orc-lecture__poster-box { display: flex; align-items: center; justify-content: center; width: 100%; height: 430px; }
.orc-lecture__image-link { display: flex; align-items: center; justify-content: center; max-width: 100%; max-height: 100%; }
.orc-lecture__image-link:focus-visible { outline: 3px solid #17448e; outline-offset: 4px; }
.orc-lecture__poster { display: block; width: auto; max-width: 100%; height: auto; max-height: 430px; margin: 0; object-fit: contain; }
.orc-lecture__caption { margin-top: 34px; }
.orc-lecture__date, .orc-lecture__number, .orc-lecture__title { margin: 0; }
.orc-lecture__date, .orc-lecture__number { font-size: 18px; line-height: 1.48; letter-spacing: .04em; }
.orc-lecture__title { margin-top: 10px; font-size: 21px; font-weight: 500; line-height: 1.62; letter-spacing: .02em; }
.orc-lectures__dialog { position: fixed; max-width: min(96vw, 1200px); max-height: 94vh; margin: auto; padding: 42px 12px 12px; border: 0; border-radius: 4px; background: #fff; box-shadow: 0 15px 60px #0007; }
.orc-lectures__dialog::backdrop { background: #000b; }
.orc-lectures__dialog img { display: block; max-width: 100%; max-height: calc(94vh - 54px); width: auto; height: auto; margin: auto; object-fit: contain; }
.orc-lectures__close { position: absolute; top: 2px; right: 7px; min-width: 36px; min-height: 36px; padding: 0; border: 0; background: transparent; color: #222; font-size: 30px; line-height: 1; cursor: pointer; }
@media (max-width: 1100px) {
  .orc-lectures__grid { grid-template-columns: repeat(2, minmax(0, 305px)); justify-content: center; gap: 85px 80px; max-width: 760px; }
}
@media (max-width: 700px) {
  .orc-lectures { padding: 42px 0 80px; }
  .orc-lectures__heading { margin-bottom: 55px; font-size: 18px; }
  .orc-lectures__grid { grid-template-columns: minmax(0, 320px); gap: 68px; width: calc(100% - 34px); max-width: 320px; }
  .orc-lecture__poster-box { height: 430px; }
  .orc-lecture__poster { max-height: 430px; }
  .orc-lecture__caption { margin-top: 27px; }
  .orc-lecture__date, .orc-lecture__number { font-size: 16px; }
  .orc-lecture__title { margin-top: 8px; font-size: 18px; line-height: 1.55; font-weight: bold; }
}
@media (max-width: 380px) {
  .orc-lectures__grid { max-width: 290px; }
  .orc-lecture__poster-box { height: 410px; }
  .orc-lecture__poster { max-height: 410px; }
}