/* 教室について（右に大きな写真、白い角丸の文の箱を重ねる。左下にもう1枚の写真、下に色のボタン3つ） */
.about {
  position: relative;
  z-index: 0;
  padding: 40px 0 80px;
}
@media (min-width: 960px) { .about { padding-bottom: 150px; } }

.about__en {
  top: 48px;
  left: 0;
  right: 0;
  line-height: 100px;
  text-align: center;
}
@media (min-width: 768px) { .about__en { left: 64px; text-align: left; } }
@media (min-width: 960px) {
  .about__en { top: 24px; left: 50%; right: auto; margin-left: -740px; line-height: 200px; }
}

.about__ttl {
  position: relative;
  color: var(--main);
  font-family: var(--f-maru);
  font-weight: 700;
  font-size: clamp(24px, 2.5vw + 16px, 40px);
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 40px;
}
.about__ttl br { display: none; }
@media (min-width: 960px) {
  .about__block { margin-top: 69px; padding-left: 40px; }
  .about__ttl { margin: 0 0 0 calc(50% - 436px); text-align: left; }
  .about__ttl br { display: inline; }
}

/* 写真と文の箱 */
.about__visual { margin: 0 24px; }
@media (min-width: 769px) and (max-width: 959px) { .about__visual { margin: 0 40px; } }
.about__img {
  position: relative;
  height: max(40vw + 162px, 312px);
  border-radius: 40px;
  overflow: hidden;
}
.about__img img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
}
.about__lead {
  margin: 40px 20px 0;
  font-size: 14px;
  line-height: 2.2857;
}
.about__lead p + p { margin-top: 1em; }
.about__sign { margin-top: 1.5em; }
@media (min-width: 768px) { .about__lead { margin: 40px 40px 0; } }
@media (min-width: 960px) {
  .about__visual {
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    margin: 0;
  }
  .about__img {
    z-index: -1;
    flex: none;
    align-self: stretch;
    width: calc(50vw + 29px);
    height: auto;
    margin: -185px 0 96px -165px;
    border-radius: 120px 0 0 120px;
  }
  .about__img img { object-position: center 30%; }
  .about__lead {
    flex: none;
    width: 600px;
    margin: 0;
    padding: 72px 72px 64px;
    border-radius: 70px;
    background: var(--white);
    font-size: 16px;
    line-height: 2;
  }
}

/* 左下の写真（960px 以上） */
.about__sub { display: none; }
@media (min-width: 960px) {
  .about__sub {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 50%;
    z-index: -1;
    display: block;
    height: 382px;
    margin-right: 304px;
    border-radius: 0 120px 120px 0;
    overflow: hidden;
  }
  .about__sub img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
}
@media (min-width: 1536px) {
  .about__sub { left: 50%; margin-left: -740px; border-radius: 120px; }
}

/* 色のボタン3つ */
.about__btns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 16px;
  margin: 32px 16px 0;
}
@media (min-width: 768px) { .about__btns { margin: 32px 40px 0; } }
@media (min-width: 960px) { .about__btns { gap: 0 40px; max-width: 880px; margin: 34px auto 0; } }
.btn--icon svg { width: 28px; height: 28px; }
@media (max-width: 959px) {
  .btn--icon { flex-direction: column; gap: 4px; padding: 12px 6px 14px; font-size: 13px; line-height: 1.4; }
}
@media (min-width: 960px) { .btn--icon svg { width: 30px; height: 30px; } }

/* お知らせの札（白い角丸の札を2つ） */
.info {
  display: grid;
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--side);
}
@media (min-width: 960px) {
  .info { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-top: 140px; }
}
.info__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 16px 20px;
  border-radius: 16px;
  background: var(--white);
  text-align: center;
}
@media (min-width: 960px) {
  .info__card { flex-direction: row; gap: 20px; padding: 16px 24px; text-align: left; }
}
.info__logo {
  flex: none;
  color: var(--main-ink);
  font-family: var(--f-maru);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-align: center;
}
.info__logo span { display: block; font-size: 10px; letter-spacing: 0.12em; }
.info__photo {
  flex: none;
  width: 72px;
  height: 72px;
  border-radius: 16px;
  object-fit: cover;
  object-position: 35% center;
}
.info__text {
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
}
@media (min-width: 960px) {
  .info__text { flex: 1; font-size: 15px; }
}
.info__sns { display: flex; gap: 12px; }
.info__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--main-btn);
  color: var(--white);
  transition: transform 0.3s ease-out;
}
.info__icon--line { background: var(--line); }
.info__icon svg { width: 26px; height: 26px; fill: currentColor; }
@media (hover: hover) { .info__icon:hover { transform: scale(1.08); } }