body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  overflow-x:hidden;
}

.back-square1{
    width: 2450px;
    height: 600px;
    background: yellow;
    position: absolute;
    top: 1000px;
    left: -260px;
    transform: rotate(160deg);
    
}

.back-square2{
  width: 100px;
  height: 100px;
  background: yellow;
  position: absolute;
  top: 100px;
  left: 100px;
}

header {
  display: flex;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid #000;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  position: relative;
}
.hero {
  position: relative;
  display: flex;
  align-items: center; /* 縦の中心を揃える */
}

.circle-svg{
    position: absolute;
    top: 110px;  /* 上から100pxの位置に配置 */
    left: 1500px; /* 左から200pxの位置に配置 */
}

.circle, .triangle, .square{
  position: absolute;
  z-index: 0;
}

.square{
  width: 230px;
  height: 230px;
  background: yellow;
  position: absolute;
  top: 300px;
  left: 800px;
  animation: rotate 10s linear infinite; 
}
.circle {
  width: 345px;
  height: 345px;
  background: yellow;
  border-radius: 50%;
  top:20px;
}

.triangle {
  width: 0;
  height: 0;
  border-left: 150px solid transparent;
  border-right: 150px solid transparent;
  border-bottom: 300px solid yellow;
  transform: rotate(315deg);
  position: absolute;
  top: 500px;
  left: 90px;
  animation: rotate 8s linear infinite; 
}

.logo {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: cursive;
  font-size: 90px;
  margin-top: 50px;
  margin-left: 140px;
  margin-right:420px;
  position: relative;
  z-index: 1;
}

.vision{
  position: relative;
  z-index: 1;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.hero {
  text-align: center;
  padding: 100px 20px;
  position: relative;
}

.hero h2 {
  font-size: 48px;
}

.hero strong {
  font-weight: bold;
}
.vision p{
 font-size: 24px;;
}

.contact-btn {
  display: inline-block;
  margin-top: 20px;
  padding: 24px 60px;
  background-color: yellow;
  text-decoration: none;
  color: #000;
  font-weight: bold;
 
}

section {
  padding: 80px 20px;
  margin-bottom: 90px;
}

section h2 {
  font-size: 36px;
  margin-bottom: 40px;
}

section p {
  max-width: 950px;
  margin: 0 auto;
  line-height: 1.5;
}

.concept{
  position: relative;
}

.about{
  position: relative;
}

.concept h2{
  margin-left: 130px;
  font-size: 96px;
}
.concept p{
  font-size: 25px;
}
.about h2{
  margin-left: 1300px;
  font-size: 96px;
}
.about p{
  font-size:25px;
}
.works h2{
  font-size: 96px;
}
@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
/* ===== レスポンシブ対応 ===== */
@media (max-width: 768px) {
  .circle {
    width: 50px;
    height: 50px;
  }

  .triangle {
    border-left: 30px solid transparent;
    border-right: 30px solid transparent;
    border-bottom: 60px solid yellow;
    top: 40px;
    left: 20px;
  }

  .logo {
    font-size: 18px;
    margin-left: 10px;
  }

  .header-right a {
    display: none; /* Instagramリンク非表示 */
  }

  .hero h2 {
    font-size: 24px;
  }

  section {
    padding: 40px 15px;
  }

  section h2 {
    font-size: 28px;
  }
}