.front-concept{
  position: relative;
  padding: 110px 0 0px;
  background: #f3f2ef;
  overflow: hidden;
}

.front-concept::after{
  /* 背景の薄い装飾 */
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0,0,0,0.02), rgba(0,0,0,0.02)),
    linear-gradient(rgba(0,0,0,0.018), rgba(0,0,0,0.018)),
    linear-gradient(rgba(0,0,0,0.015), rgba(0,0,0,0.015)),
    linear-gradient(rgba(0,0,0,0.018), rgba(0,0,0,0.018)),
    linear-gradient(rgba(0,0,0,0.015), rgba(0,0,0,0.015)),
    linear-gradient(rgba(0,0,0,0.015), rgba(0,0,0,0.015));
  background-size:
    220px 150px,
    260px 180px,
    180px 130px,
    240px 170px,
    170px 120px,
    220px 150px;
  background-position:
    20% 8%,
    60% 8%,
    84% 16%,
    73% 46%,
    10% 72%,
    58% 76%;
  background-repeat: no-repeat;
  transform: rotate(-12deg) scale(1.08);
  opacity: .12;
}

/* =========================================================
   CONCEPT 背景：流れる画像
   完全ループ版
========================================================= */

.concept-flow-bg{
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.2;
}

.concept-flow-bg__track{
  position: absolute;
  left: 50%;
  top: 50%;
  display: flex;
  justify-content: center;
  gap: 10px;
  width: 300vw;
  min-width: 4200px;
  height: 460%;
  padding: 0;
  box-sizing: border-box;
  transform: translate(-50%, -50%) rotate(-12deg);
}

.concept-flow-bg__col{
  width: 340px;
  flex: 0 0 340px;
  overflow: hidden;
}

.concept-flow-bg__loop{
  display: flex;
  flex-direction: column;
  animation: conceptDiagonalFlowLoop 150s linear infinite;
}

.concept-flow-bg__col:nth-child(2) .concept-flow-bg__loop{
  animation-duration: 160s;
}

.concept-flow-bg__col:nth-child(3) .concept-flow-bg__loop{
  animation-duration: 170s;
}

.concept-flow-bg__col:nth-child(4) .concept-flow-bg__loop{
  animation-duration: 180s;
}

.concept-flow-bg__col:nth-child(5) .concept-flow-bg__loop{
  animation-duration: 190s;
}

.concept-flow-bg__col:nth-child(6) .concept-flow-bg__loop{
  animation-duration: 200s;
}

.concept-flow-bg__col:nth-child(7) .concept-flow-bg__loop{
  animation-duration: 210s;
}

.concept-flow-bg__col:nth-child(8) .concept-flow-bg__loop{
  animation-duration: 220s;
}

.concept-flow-bg__col:nth-child(9) .concept-flow-bg__loop{
  animation-duration: 230s;
}

.concept-flow-bg__col:nth-child(10) .concept-flow-bg__loop{
  animation-duration: 240s;
}

.concept-flow-bg__set{
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.concept-flow-bg__set img{
  display: block;
  width: 340px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: grayscale(100%);
  opacity: 0.35;
}

@keyframes conceptDiagonalFlowLoop{
  0%{
    transform: translateY(0);
  }

  100%{
    transform: translateY(-50%);
  }
}

@media screen and (max-width: 767px){

  .concept-flow-bg{
    opacity: 0.055;
  }

  .concept-flow-bg__track{
    gap: 8px;
    width: 320vw;
    min-width: 2000px;
    height: 430%;
  }

  .concept-flow-bg__col{
    width: 220px;
    flex-basis: 220px;
  }

  .concept-flow-bg__set{
    gap: 8px;
  }

  .concept-flow-bg__set img{
    width: 220px;
    opacity: 0.43;
  }

}




.home-concept__inner{
  /* 上段本文エリアの横幅 */
  position: relative;
  z-index: 3;
  width: 90%;
  max-width: 1080px;
  margin: 0 auto;
}

.home-concept__head{
  /* CONCEPT 見出しの余白 */
  margin-bottom: 34px;
}

.home-concept__title{
  /* CONCEPT 見出し */
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.34em;
  font-weight: 600;
  color: #d2ac2c;
}

.home-concept__sub{
  /* 未使用の小見出し用 */
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: #8f8f8f;
}

.home-concept__body{
  /* 本文全体 */
  max-width: 760px;
}

.home-concept__catch{
  /* 大きいキャッチコピー */
  margin: 0 0 44px;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 53px;
  line-height: 1.3;
  font-weight: 500;
  color: #111;
}

.home-concept__text p{
  /* 本文段落 */
  margin: 0 0 28px;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.08em;
  font-weight: 400;
  color: #5a5a5a;
}

.home-concept__text p:last-child{
  margin-bottom: 0;
}

.home-concept__footer{
  /* 下部ボタンの余白 */
  margin-top: 54px;
}

.home-concept__button,
.home-concept__button:visited,
.home-concept__button:active{
  /* 「キクザワの家づくりについて」ボタン */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-width: 304px;
  height: 54px;
  padding: 0 34px;
  background: transparent;
  border: 1px solid #d8d2cb;
  color: #17120f;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
}

.home-concept__button:hover{
  background: #17120f;
  border-color: #17120f;
  color: #ffffff;
  text-decoration: none;
}

.home-concept__button-arrow{
  /* ボタン右側の矢印ラッパー */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
}

.home-concept__button-icon{
  /* ボタン矢印SVG */
  width: 18px;
  height: 18px;
  display: block;
  overflow: visible;
}

.home-concept__button-icon path{
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.home-concept__button:hover .home-concept__button-arrow{
  /* ボタンホバー時、矢印を右へ */
  transform: translateX(6px);
}

.home-concept-links{
  /* 下部3カラムリンク全体 */
  position: relative;
  z-index: 3;
  margin-top: 92px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.home-concept-links__item{
  /* 1枚ごとのリンクカード */
  position: relative;
  display: block;
  color: #fff;
  text-decoration: none;
  overflow: hidden;
  min-height: 455px;
}

.home-concept-links__item:hover,
.home-concept-links__item:visited,
.home-concept-links__item:active{
  color: #fff;
  text-decoration: none;
}

.home-concept-links__image{
  /* 背景画像 */
  position: absolute;
  inset: 0;
}

.home-concept-links__image img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.home-concept-links__overlay{
  /* 画像の上の黒い透過 */
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  transition: background 0.3s ease;
}

.home-concept-links__content{
  /* カード内テキスト全体 */
  position: relative;
  z-index: 2;
  height: 100%;
  padding: 78px 24px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.home-concept-links__title{
  /* Performance / Design / Quality */
  margin: 20% 0 0 0;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 40px;
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: #fff;
}

.home-concept-links__sub{
  /* 日本語小見出し */
  margin: 0 0 24px;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: #d2ac2c;
  font-weight: 900;
  text-shadow: 0 0 0.4px #d2ac2c;
}

.home-concept-links__text{
  /* 説明文 */
  margin: 0;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 12px;
  line-height: 2;
  color: #fff;
  font-weight: 900;
}

.home-concept-links__more{
  /* MORE 表示 */
  position: absolute;
  right: 28px;
  bottom: 34px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif !important;
  font-size: 11px;
  line-height: 1;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.65);
  transition: color 0.3s ease;
}

.home-concept-links__more::before{
  /* MORE 左の横線 */
  content: "";
  display: inline-block;
  width: 56px;
  height: 1px;
  background: rgba(255,255,255,0.5);
  vertical-align: middle;
  flex-shrink: 0;
  transition: background 0.3s ease;
}

.home-concept-links__item:hover .home-concept-links__more{
  color: rgba(255,255,255,1);
}

.home-concept-links__item:hover .home-concept-links__more::before{
  background: rgba(255,255,255,0.9);
}

.home-concept-links__more::before{
  /* 上の ::before を上書きしている既存指定
     今は削除せず残す */
  content: "";
  display: block;
  width: 35px;
  height: 1px;
  background: rgba(255,255,255,0.75);
}

.home-concept-links__item:hover .home-concept-links__image img{
  /* ホバー時に画像拡大 */
  transform: scale(1.06);
}

.home-concept-links__item:hover .home-concept-links__overlay{
  /* ホバー時に黒透過を少し薄く */
  background: rgba(0, 0, 0, 0.4);
}

@media screen and (max-width: 1200px){
  .home-concept-links__item{
    min-height: 400px;
  }

  .home-concept-links__content{
    padding: 62px 18px 24px;
  }

  .home-concept-links__title{
    font-size: 40px;
  }

  .home-concept-links__sub{
    margin: 8px 0 18px;
    font-size: 12px;
    font-weight: 900;
  }

  .home-concept-links__text{
    font-size: 11px;
    line-height: 1.5;
  }

  .home-concept-links__more{
    padding-top: 34px;
    font-size: 18px;
  }
}

@media screen and (max-width: 767px){
  .front-concept{
    padding: 70px 0 80px;
  }

  .concept-flow-bg{
    opacity: 0.08;
  }

  .concept-flow-bg__track{
    gap: 36px;
    width: 230vw;
    min-width: 900px;
    height: 210%;
    padding: 0 80px;
  }

  .concept-flow-bg__col{
    gap: 28px;
    width: 150px;
    flex-basis: 150px;
  }

  .concept-flow-bg__col img{
    width: 150px;
  }

  .home-concept__inner{
    width: calc(100% - 32px);
  }

  .home-concept__head{
    margin-bottom: 24px;
  }

  .home-concept__title{
    font-size: 13px;
  }

  .home-concept__sub{
    font-size: 11px;
  }

  .home-concept__catch{
    margin-bottom: 28px;
    font-size: 28px;
    line-height: 1.7;
  }

  .home-concept__text p{
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 2.1;
  }

  .home-concept__footer{
    margin-top: 34px;
  }

  .home-concept__button,
  .home-concept__button:visited,
  .home-concept__button:active{
    width: 100%;
    min-width: 0;
    height: 50px;
    padding: 0 20px;
    font-size: 14px;
  }

  .home-concept-links{
    margin-top: 56px;
    grid-template-columns: 1fr;
  }

  .home-concept-links__item{
    min-height: 360px;
  }

  .home-concept-links__content{
    padding: 56px 24px 28px;
  }

  .home-concept-links__title{
    font-size: 42px;
  }

  .home-concept-links__sub{
    margin: 10px 0 24px;
    font-size: 12px;
    font-weight: 900;
  }

  .home-concept-links__text{
    font-size: 13px;
    line-height: 1.5;
  }

  .home-concept-links__more{
    padding-top: 30px;
    font-size: 20px;
  }

  .home-concept-links__more::before{
    width: 52px;
  }
}