@charset "utf-8";

html { scroll-behavior: smooth; }
#globalMain, #globalContents{ overflow: visible; }
#globalWrapper { box-sizing: border-box; }


/* Variables & Setup -------------------- */
:root {
  scroll-padding: 80px;
}

.setruss-container-wrapper {
  container-type: inline-size;
  container-name: setruss-container-wrapper;
}

.setruss-container * { box-sizing: border-box; }

:root .setruss-container {
  --color-black: #111;
  --color-lightgray: #ddd;
  --color-white: #fff;
  --color-red: #da0000;
  --color-purple: #795284;
  --color-link: #0000FF;
  --color-card-bg: #eaeaea;
  --color-card-lb: #333333;
  --color-accent: #d9f000;
  & .sec-product.basic{
    --color-card-bg: #e4ebec;
    --color-card-lb: #078dac;
  }
  & .sec-product.object{
    --color-card-bg: #F0EEF4;
    --color-card-lb: #6e096b;
  }
  & .sec-trussspacer{
    --color-card-lb: #0C7C48;
  }
  --hover-opacity: 0.7;
  --padding-inline-common: 1.5rem;
  --card-pdin: 1.5rem;
}

/* common -------------------- */ 
.setruss-container {
  max-width: 1120px;
  margin-inline: auto;
  padding-bottom: 2rem;
  font-family: "Noto Sans JP", sans-serif;
  background-color: var(--color-white);
  color: var(--color-black);
  font-size: 16px;
  line-height: 1.4;
@container setruss-container-wrapper (max-width: 768px) {
  font-size: 14px;
}

  & section {
    padding-block: 2rem;
    &:last-of-type{padding-bottom: 0;}
  }

  & figure{ 
    text-align: center;
    & > figcaption{
      display: inline-block;
      font-size: 85%;
      margin-top: .25rem;
      &::before{content: "〈";}
      &::after{content: "〉";}
    }
  }

  & img{
    max-width: 100%;
    height: auto;
    vertical-align: bottom;
  }

  & a{
    color: inherit;
    text-decoration: none;
  }

  & span{
    color: inherit;
    font-weight: inherit;
  }
}

#wrapper .setruss-container{
  & .inner{
    padding-inline: var(--padding-inline-common);
  }
}


/* element -------------------- */
/* 見出し */
.setruss-container .el-heading-g{
  & h2{
    margin-bottom: 1rem;
    padding-bottom: .25rem;
    padding-inline: .75rem;
    border: 0 solid var(--color-card-lb);
    border-left-width: .5rem;
    border-bottom-width: 1px;
    font-size: 175%;
    font-weight: bold;
  }

  & p{
    padding-inline: 1rem;
    font-size: 125%;
    &::before{content: "＼ ";}
    &::after{content: "／";}
  }
@container setruss-container-wrapper (max-width: 600px) {
  font-size: 85%;
}
}

/* CTAボタン */
.setruss-container  .el-btn-cta{
  display: block;
  width: 80%;
  min-width: fit-content;
  margin-inline: auto;
  padding-top: .4rem;
  padding-bottom: .6rem;
  padding-inline: 2rem;
  border-radius: .5rem;
  background-color: var(--color-black);
  color: var(--color-white);
  text-align: center;
  letter-spacing: 0.1em;
  
  &:hover{
    opacity: var(--hover-opacity);
  }
}

/* 文字リンク */
.setruss-container .el-tlink{
  display: inline-block;
  padding-inline: .3em;
  border-radius: .25em;
  color: var(--color-link);
  font-weight: bold;

  &:hover{
    background-color: var(--color-link);
    color: var(--color-white);
  }
}

/* 視覚的に非表示 */
.setruss-container .el-visually-hidden{
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* 文章 */
.setruss-container .paragraph{
  line-height: 1.7;
  & + .paragraph{
    margin-top: .5rem;
  }
}

/* swiper -------------------- */
:root .setruss-container{
  --swiper-navigation-sides-offset: -1.5rem;
}

.setruss-container {
  & .swiper-container-wrapper{
    position: relative;
  }

  & .swiper-button-prev,
  & .swiper-button-next {
    position: absolute;
    top: 50%;
    z-index: 2;

    & > svg{
      display: none;
    }

    &::after{
      content: "";
      display: block;
      width: 2rem;
      height: 2rem;
      background: url(../img/assets/btn-prevnext.png) center / contain no-repeat;
      vertical-align: middle;
    }    
  }
  & .swiper-button-prev::after{ transform: rotate(90deg); }
  & .swiper-button-next::after{ transform: rotate(-90deg); }
}

/* Section-by-section -------------------- */
/* FV --------------------*/
.setruss-container .sec-fv{
  position: relative;
  padding-inline: var(--padding-inline-common);
  padding-block: 1rem;
  background: url("../img/fv-bg.jpg") center / cover no-repeat;
  color: var(--color-white);
  text-shadow: 0 0 .5rem var(--color-black);

  &::after{
    content: "";
    display: block;
    position: absolute;
    z-index: 0;
    inset: 0;
    background-color: #00000099;
  }
}

.sec-fv .unit-box{
  position: relative;
  z-index: 1;
}

.sec-fv .heading-g{
  aspect-ratio: 5/2;
  display: grid;
  place-items: center;

  & > h2{
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    font-size: 220%;
    font-weight: bold;
    letter-spacing: 0.05em;

    & > span:nth-child(2){ 
      font-size: 125%;
    }  
  }
@container setruss-container-wrapper (max-width: 1024px) {
  & > h2{
    font-size: 200%;
  }
}
@container setruss-container-wrapper (max-width: 920px) {
  & > h2{
    font-size: 150%;
  }
}
@container setruss-container-wrapper (max-width: 600px) {
  & > h2{
    & > span:nth-child(2){
      font-size: 100%;
    }
  }
}
@container setruss-container-wrapper (max-width: 480px) {
  & > h2{
    align-items: start;
  }
}
}

.sec-fv .text-block{
  border-top: 1px solid var(--color-white);
  padding-top: 1rem;
  font-size: 112%;
@container setruss-container-wrapper (max-width: 600px) {
  font-size: 100%;
}
}  

/* Benefit --------------------*/
.setruss-container .sec-benefit{
  padding-block: 5rem;
  padding-inline: var(--padding-inline-common);
  background-color: var(--color-accent);
}

.sec-benefit .lead-text{
  width: fit-content;
  margin-inline: auto;
  font-size: clamp(12px, 175%, 3.8vw);
  white-space: nowrap;
  &::before{content: "＼ ";}
  &::after{content: " ／";}
}

.sec-benefit .benefit-list{
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem 3rem;
  margin-top: 2rem;

  & > li{
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 1rem;
  }

@container setruss-container-wrapper (max-width: 850px) {
  & > li{
    grid-template-columns: 55px 1fr;
  }
}
@container setruss-container-wrapper (max-width: 768px) {
  flex-direction: column;
}
}

.sec-benefit .symbol-mark{
  padding: 1rem;
  border-radius: 100vmax;
  background-color: var(--color-black);
@container setruss-container-wrapper (max-width: 850px) {
  padding: .75rem;
}
}

.sec-benefit .benefit-txt{
  height: fit-content;
  margin-block: auto;
  font-size: 135%;
@container setruss-container-wrapper (max-width: 350px) {
  font-size: 100%;
}
}

/* 目次 --------------------*/
.sec-toc .el-heading-g{
  margin-top: 1rem;
}

.sec-toc .table-of-contents > ul{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem 2rem;
  width: fit-content;
  margin-inline: auto;

  & > li{
    padding-block: .5rem;
    padding-inline: .75rem;
    border-bottom: 1px solid var(--color-black);
    font-size: 125%;
    font-weight: bold;
  }

@container setruss-container-wrapper (max-width: 768px) {
  grid-template-columns: 100%;
  gap: 0;

  & > li{
    &:last-child{border-width: 0;}
  }
}

@container setruss-container-wrapper (max-width: 414px) {
  & > li{
    font-size: 100%;
  }
}
}

.sec-toc .ttl{
  position: relative;
  display: block;
  padding-block: .5rem;
  padding-right: 2em;

  &::after{
    content: "";
    display: block;
    width: 1.4em;
    height: 1.4em;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: url(../img/assets/chevron_black.png) center / contain no-repeat;
    vertical-align: middle; 
  }

  &:hover{
    opacity: var(--hover-opacity);
    &::after{ margin-top: 3px; }
  }
}

/* トラス選びのポイント -------------------- */
.sec-point .unit-box{
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 1.5rem;
@container setruss-container-wrapper (max-width: 920px) {
  grid-template-columns: 1fr 250px;
}
@container setruss-container-wrapper (max-width: 768px) {
  grid-template-columns: 100%;
}
}

.sec-point .image-block{
  display: flex;
  gap: .5rem;
@container setruss-container-wrapper (max-width: 920px) {
  flex-direction: column;
}
@container setruss-container-wrapper (max-width: 768px) {
  flex-direction: row;
}
}

/*  トラスセット：基本 -------------------- */
/*  トラスセット：オブジェ -------------------- */
.sec-product .product-list{
  display: flex;
  flex-wrap: wrap;
  gap: 3rem 2rem;
  margin-top: 2rem;

  & > li{
    width: calc((100% - 2rem)/2);
    background-color: var(--color-card-bg);
  @container setruss-container-wrapper (max-width: 600px) {
    width: 100%;
    max-width: 450px;
    margin-inline: auto;
  }
  }
}

.sec-product .sub-heading {
  background-color: var(--color-card-lb);
  color: var(--color-white);
  padding-top: .2rem;
  padding-bottom: .4rem;
  padding-inline: var(--card-pdin);
  text-align: center;
  font-size: 150%;
  font-weight: bold;
}

.sec-product .unit-box {
  position: relative;
  height: 100%;
  padding-block: 1.5rem;
  padding-bottom: 4.5rem;
  padding-inline: var(--card-pdin);
}

.sec-product .ttl {
  width: fit-content;
  margin-inline: auto;
  font-size: 125%;
  font-weight: bold;
}

.sec-product .price {
  width: fit-content;
  margin-inline: auto;
  color: var(--color-red);
  letter-spacing: 0.05em;
}

.sec-product .swiper-container-wrapper {
  max-width: 400px !important;
  margin-inline: auto;
  margin-top: 1rem;
}

.sec-product .supplement {
  width: fit-content;
  margin-inline: auto;
  margin-top: .5rem;
  font-size: 85%;
}

.sec-product .comment {
  margin-block: 1rem;
}

.sec-product .el-btn-cta {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translate(-50%, -100%);
}

.sec-product .note {
  margin-top: .5rem;
}

/* トラススペーサーについて -------------------- */
.sec-trussspacer article{
  margin-top: 1.5rem;
  & + article{
    margin-top: 3rem;
  }
}
.sec-trussspacer .sub-heading{
  margin-bottom: .5rem;
  font-size: 150%;
  font-weight: bold;
  &.role::before{content: "💡";}
  &.kinds::before{content: "🧩";}  
}

.sec-trussspacer .explanation-box{
  margin-top: 1rem;
  & + .explanation-box{
    margin-top: 2rem;
  }

  & .title{
    margin-bottom: .25rem;
    font-weight: bold;
  }
}

.sec-trussspacer .unit-box{
  display: flex;
  align-items: center;
  gap: 1rem 1.5rem;
@container setruss-container-wrapper (max-width: 768px) {
  flex-direction: column;
}
}

.sec-trussspacer .text-block{
  flex: 1;
}

.sec-trussspacer .image-box{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem ;
  width: 300px;
  & > figure{
    height: 150px;
    & > img{
      display: block;
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
  }
@container setruss-container-wrapper (max-width: 768px) {
  flex-direction: row;
  width: 100%;
}
}

.sec-trussspacer .tx-calculation{
  display: inline-block;
  padding-inline: .5rem;
  background-color: var(--color-card-bg);
}

.sec-trussspacer .product-list{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 1rem;
  margin-top: 1.5rem;
  margin-inline: auto;
  & > li{
    display: flex;
    flex-direction: column;
    background-color: var(--color-card-bg);
    & > div{
      flex: 1;
      height: 100%;
      display: flex;
      flex-direction: column;
      padding-block: 1.5rem;
      padding-inline: var(--card-pdin);
    }
  }
  & hr{
    width: 100%;
    margin-block: 1.5rem 1rem;
    border: 1px dashed var(--color-card-lb);
  }
@container setruss-container-wrapper (max-width: 600px) {
  grid-template-columns: 100%;
  max-width: 450px;
}
}

.sec-trussspacer .ttl{
  background-color: var(--color-card-lb);
  color: var(--color-white);
  padding-top: .2rem;
  padding-bottom: .4rem;
  padding-inline: var(--card-pdin);
  text-align: center;
  font-size: 150%;
}

.sec-trussspacer .desc{
  flex: 1;
  margin-bottom: 1rem;
}

.sec-trussspacer .el-btn-cta{
  margin-top: 1rem;
}


.sec-trussspacer .caution-note{
  width: fit-content;
  margin-inline: auto;
  margin-top: 1.5rem;
}

/* 部材を個別に選ぶ -------------------- */
.sec-selectparts .product-list{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;

  & > li{
    border:  2px solid var(--color-black);
    background-color: var(--color-accent);
    
    & > a{
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-left: .5rem;
      aspect-ratio: 5/1;
      &:hover{
        background-color: var(--color-black);
        color: var(--color-accent);
      }
      &::after{
        content: "";
        display: block;
        width: 30%;
        height: 100%;
        background: url(../img/selectparts/square-truss.png) center / contain no-repeat;
      }
    }

    & a.square-truss::after{background-image: url(../img/selectparts/square-truss.png);}
    & a.triangular-truss::after{background-image: url(../img/selectparts/triangular-truss.png);}
    & a.flat-truss::after{background-image: url(../img/selectparts/flat-truss.png);}
    & a.other-parts::after{background-image: url(../img/selectparts/other-parts.png);}
    & a.mini-truss::after{background-image: url(../img/selectparts/mini-truss.png);}
  }

@container setruss-container-wrapper (max-width: 768px) {
  grid-template-columns: repeat(2, 1fr);
}
@container setruss-container-wrapper (max-width: 500px) {
  grid-template-columns: 100%;
}
}

.sec-selectparts .ttl{
  font-size: 150%;
  font-weight: bold;
  padding: .5rem;
@container setruss-container-wrapper (max-width: 920px) {
  font-size: 125%;
}
}


/* 関連バナー -------------------- */
.sec-related .banner-list{
  display: flex;
  flex-direction: column;
  gap: 1rem;

  & > li:hover{
    opacity: var(--hover-opacity);
  }
}

.sec-related .image-block{
  & > img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
  }
@container setruss-container-wrapper (max-width: 600px) {
  aspect-ratio: 5/1;
  &.op-left{
    & > img{
      object-position: left center
    }
  }
}
}