body {
  background: url("../img/main_bg.png") repeat-y center;
  background-size: cover;
  margin: 0;
  padding: 0; }

.main-visual {
  position: relative;
  background: url("../img/main_bg.jpg") no-repeat center top;
  background-size: cover;
  color: #fff;
  min-height: 880px;
  padding-top: 0px;
  box-sizing: border-box;
  overflow: hidden; }
  @media (max-width: 768px) {
    .main-visual {
      min-height: 645px; } }
  .main-visual .main-inner {
    max-width: 1150px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 2rem;
    height: 100%;
    padding: 2rem 1rem;
    box-sizing: border-box;
    position: relative;
    z-index: 2; }
  .main-visual .main-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start; }
    .main-visual .main-content .main-logo {
      font-size: 2.6rem;
      font-weight: 800; }
    .main-visual .main-content .main-title {
      margin: 0.5rem auto 1rem;
      text-align: center; }
      .main-visual .main-content .main-title img.campus {
        margin-bottom: 1.0rem; }
      .main-visual .main-content .main-title img {
        width: auto;
        margin: 0 auto;
        max-width: 100%;
        height: auto; }
      .main-visual .main-content .main-title .main-subtitle {
        font-size: 2rem;
        font-weight: 700;
        margin-top: 1.2rem;
        line-height: 1.5;
        text-align: center; }
      @media (max-width: 768px) {
        .main-visual .main-content .main-title {
          width: 100%; }
          .main-visual .main-content .main-title img.campus {
            width: 80%; }
          .main-visual .main-content .main-title .main-subtitle {
            font-size: 1.4rem; } }
  .main-visual .circle-images {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; }
    .main-visual .circle-images .circle {
      position: absolute;
      width: 100px;
      height: auto;
      opacity: 0;
      transform: translateY(20px);
      pointer-events: none;
      animation: fadeInUp 1.2s ease-out forwards, softMove 5s ease-in-out 1.4s infinite alternate; }
      .main-visual .circle-images .circle.delay01 {
        animation-delay: 0.3s, 1.6s; }
      .main-visual .circle-images .circle.delay02 {
        animation-delay: 0.5s, 1.8s; }
      .main-visual .circle-images .circle.delay03 {
        animation-delay: 0.8s, 2.1s; }
      .main-visual .circle-images .circle.delay04 {
        animation-delay: 1s, 2.3s; }
      .main-visual .circle-images .circle.delay05 {
        animation-delay: 0.7s, 2.5s; }
      .main-visual .circle-images .circle.circle-01 {
        width: 320px;
        top: 87%;
        left: 70%; }
      .main-visual .circle-images .circle.circle-02 {
        width: 230px;
        top: 180%;
        right: 0%; }
      .main-visual .circle-images .circle.circle-03 {
        width: 190px;
        height: 190px;
        bottom: -120%;
        left: 58%; }
      .main-visual .circle-images .circle.circle-04 {
        width: 210px;
        top: 175%;
        left: 0%; }
      .main-visual .circle-images .circle.circle-05 {
        width: 235px;
        top: 110%;
        left: 10%; }
      @media (max-width: 768px) {
        .main-visual .circle-images .circle {
          border-width: 4px; }
          .main-visual .circle-images .circle.circle-01 {
            width: 150px;
            top: 100%;
            left: 60%; }
          .main-visual .circle-images .circle.circle-02 {
            width: 110px;
            top: 165%;
            right: -6%; }
          .main-visual .circle-images .circle.circle-03 {
            width: 95px;
            height: 95px;
            top: 200%;
            left: 55%; }
          .main-visual .circle-images .circle.circle-04 {
            width: 115px;
            top: 180%;
            left: -8%; }
          .main-visual .circle-images .circle.circle-05 {
            width: 130px;
            top: 130%;
            left: 12%; } }

.fadeup {
  opacity: 0;
  animation: fadeIn 1.2s ease-out forwards; }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px); }
  to {
    opacity: 1;
    transform: translateY(0); } }
@keyframes softMove {
  0% {
    transform: translateY(0px) scale(1);
    opacity: 1; }
  50% {
    transform: translateY(-3px) scale(1.02);
    opacity: 0.95; }
  100% {
    transform: translateY(3px) scale(1);
    opacity: 0.9; } }