/* =========================================================
   HQ Background: Style
   key: ren-concept-paper
   name: LG ラウンジ蓮
   group: set
   type: Style
   layer: concept
   value:
   selector:
   ========================================================= */

/* =========================================================
   Concept Background
   ========================================================= */

section#home_sec_concept {
  background-color: #3d4979;
  background-image:
    url("../img/overlay_noise.webp"), url("../img/concept_bg.webp");
  background-repeat: repeat, no-repeat;
  background-position:
    center,
    top right;
  background-size: 80px, 50%;
}

/* =========================================================
   Heading（Color Only）
   ========================================================= */

section#home_sec_concept .c-heading-plain {
  color: #fff;
}

/* =========================================================
   Concept Paper (Refinement)
   ========================================================= */

.paper {
  border: 1px solid rgba(0, 0, 0, 0.1);
}

/* セクション余白 */
section#home_sec_concept {
  padding: 80px 0;
}

/* 紙の横幅と中央配置 */
section#home_sec_concept .paper {
  max-width: 950px;
  margin: 0 auto;
  padding: 10px; /* ←これが外枠 */
  background: #e5dccf; /* 外側の紙色 */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

/* 紙の中身 */
section#home_sec_concept .paper .concept_txt {
  background: rgba(230, 220, 200, 0.7);
  backdrop-filter: blur(2px);
  padding: 40px 40px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

section#home_sec_concept .concept_txt {
  color: #565a78;
  font-size: 17px;
  line-height: 2;
}

/* 段落の整え */
section#home_sec_concept .paper p {
  line-height: 1.9;
  padding-bottom: 14px;
  margin-bottom: 0;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 767px) {
  section#home_sec_concept h3.common {
    margin-bottom: 24px;
  }

  section#home_sec_concept h3.common .en {
    font-size: 40px;
    margin-bottom: 22px;
  }

  section#home_sec_concept h3.common .jp {
    font-size: 12px;
  }

  section#home_sec_concept {
    padding: 50px 0;
  }

  section#home_sec_concept .paper {
    margin: 0 15px;
  }

  section#home_sec_concept .paper .concept_txt {
    padding: 25px 20px 10px;
  }
}