@charset "UTF-8";
/* 素材ページ一覧（/material のみ。分類別一覧・個別ページは page-material.css）。T279 全面デザイン刷新。
   main.mm は 1100px 固定のため、背景を持つ区画は画面幅いっぱいに広げ、中身は max-width の箱に収める。 */

:root {
  --m-brown: #b1774c;
  --m-dark: #4f4038;
  --m-gold: #c9a063;
  --m-cream: #f7f2e9;
  --m-line: #e3d9c8;
  --m-text: #2b2623;
  --m-serif: "游明朝", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ Ｐ明朝", serif;
}

main.mm { width: 100%; margin-bottom: 0; }
#box-01, .bg-area, #orig, #box-03 { width: 100vw; margin-left: calc(50% - 50vw); }
.dn { display: none; }
.ca2-box { margin-top: 0; }

/*============================
 ヒーロー + 導入（#box-01）
============================*/
#box-01 .inner { background: var(--m-cream); padding: 0 0 72px; }
#box-01 .inner .bg-box {
  position: relative; width: 100%; min-height: 440px; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(rgba(40,28,20,.45), rgba(40,28,20,.45)), url(../images/material/bg-01.png) center / cover no-repeat;
}
#box-01 .inner .bg-box .ttl { text-align: center; color: #fff; padding: 0 20px; }
#box-01 .inner .bg-box .ttl .en { display: block; font-family: 'Barlow', sans-serif; font-size: 16px; letter-spacing: .4em; color: #f1dfb8; margin-bottom: 18px; text-transform: uppercase; }
#box-01 .inner .bg-box .ttl .ss { display: block; font-family: var(--m-serif); font-size: 22px; letter-spacing: .2em; margin-bottom: 8px; text-shadow: 0 1px 12px rgba(0,0,0,.5); }
#box-01 .inner .bg-box .ttl .bb { display: block; font-family: var(--m-serif); font-size: 52px; letter-spacing: .18em; line-height: 1.4; text-shadow: 0 1px 14px rgba(0,0,0,.55); }
#box-01 .inner .txt-01 { margin: 64px auto 28px; padding: 0 20px; text-align: center; color: var(--m-brown); font-family: var(--m-serif); font-size: 32px; letter-spacing: .12em; line-height: 1.7; }
#box-01 .inner .txt-01::after { content: ""; display: block; width: 48px; height: 2px; background: var(--m-gold); margin: 28px auto 0; }
#box-01 .inner .txt-box { padding: 0 20px; text-align: center; color: var(--m-text); font-family: var(--m-serif); font-size: 18px; letter-spacing: .08em; line-height: 2.2; }
#box-01 .inner .txt-box p + p { margin-top: 1em; }

/*============================
 空気環境（#o-box）+ 素材一覧（#box-02）
============================*/
.bg-area { background: #54453c url(../images/material/bg-04.jpg) center top / auto no-repeat; padding: 150px 20px 100px; }
.bg-area #o-box .inner .bg-box { max-width: 840px; margin: 0 auto 72px; background: #fff; border-radius: 12px; padding: 44px 56px 40px; box-shadow: 0 12px 40px rgba(40,28,20,.22); }
.bg-area #o-box .inner .bg-box .ttl { color: var(--m-brown); font-size: 22px; font-weight: 500; letter-spacing: .08em; line-height: 1.7; text-align: center; margin-bottom: 20px; }
.bg-area #o-box .inner .bg-box .txt-01 { color: var(--m-text); font-size: 16px; line-height: 2; letter-spacing: .04em; }

.bg-area #box-02 .inner .ttl { color: #fff; font-family: var(--m-serif); font-size: 42px; font-weight: 400; letter-spacing: .14em; line-height: 1.5; text-align: center; margin-bottom: 20px; }
.bg-area #box-02 .inner .ttl .ss { display: block; font-size: 20px; letter-spacing: .16em; margin-bottom: 8px; color: #e8d7b6; }
.bg-area #box-02 .inner .txt-box-01 { color: #fff; font-size: 16px; line-height: 2; letter-spacing: .06em; text-align: center; margin-bottom: 44px; }
.bg-area #box-02 .inner .li-box { max-width: 1200px; margin: 0 auto; background: transparent; padding: 0; }
.bg-area #box-02 .inner .li-box .list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.bg-area #box-02 .inner .li-box .list li { position: relative; display: flex; flex-direction: column; width: auto; margin: 0; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 6px 22px rgba(0,0,0,.18); padding-bottom: 24px; }
.bg-area #box-02 .inner .li-box .list .li-pic { order: 0; margin: 0 0 18px; }
.bg-area #box-02 .inner .li-box .list .li-pic img { display: block; width: 100%; height: 190px; object-fit: cover; }
.bg-area #box-02 .inner .li-box .li-ttlname { position: absolute; top: 12px; left: 12px; z-index: 1; margin: 0; padding: 3px 12px; background: rgba(79,64,56,.88); color: #fff; font-size: 13px; font-weight: 500; letter-spacing: .1em; line-height: 1.8; border-radius: 999px; text-align: center; }
.bg-area #box-02 .inner .li-box .list .li-ttl { margin: 0 18px 8px; color: var(--m-brown); font-size: 19px; font-weight: 600; letter-spacing: .06em; line-height: 1.5; text-align: left; }
.bg-area #box-02 .inner .li-box .list .li-txt-box-01 { margin: 0 18px 14px; padding: 0 0 14px; border-bottom: 1px solid var(--m-line); color: var(--m-text); font-size: 15px; font-weight: 600; letter-spacing: .04em; line-height: 1.7; text-align: left; }
.bg-area #box-02 .inner .li-box .list .li-txt-box-02 { margin: 0 18px; color: #4a423d; font-size: 14.5px; line-height: 1.9; letter-spacing: .02em; }
.bg-area #box-02 .inner .li-box .list .li-txt-box-02 p + p { margin-top: .7em; }

/*============================
 オリジナルしっくい（#orig）
============================*/
#orig .bx { background: var(--m-cream); padding: 96px 20px 120px; }
#orig .bx .ttl { text-align: center; font-size: 22px; letter-spacing: .12em; line-height: 1.6; margin-bottom: 52px; }
#orig .bx .ttl span { display: block; margin-top: 6px; font-size: 40px; letter-spacing: .1em; }
#orig .inner, #orig .inner1, #orig .inner2, #orig .inner3 { width: 100%; max-width: 1100px; margin: 0 auto 96px; position: relative; }
#orig .inner3 { margin-bottom: 0; }
#orig img { display: block; width: 100%; height: auto; border-radius: 12px; }

#orig .inner .in-inner, #orig .inner2 .in-inner2, #orig .inner3 .in-inner3 { width: auto; margin: 0; display: grid; grid-template-columns: 1fr 1fr; column-gap: 56px; row-gap: 14px; align-items: start; }
#orig .ttl1, #orig .ttl2 { color: var(--m-brown); font-size: 22px; font-weight: 600; letter-spacing: .06em; line-height: 1.6; text-align: left; margin: 0; }
#orig .txt1, #orig .txt3 { margin: 0; font-size: 16px; line-height: 2; letter-spacing: .04em; }
#orig .txt2 { margin: 0; font-size: 13px; line-height: 1.8; color: #6b625b; }
/* しっくい: 画像 左 / 文章 右 */
#orig .inner .in-inner .img1 { grid-column: 1; grid-row: 1 / span 3; position: static; margin: 0; }
#orig .inner .in-inner .ttl1, #orig .inner .in-inner .txt1, #orig .inner .in-inner .txt2 { grid-column: 2; }
/* 比較表 */
#orig .inner1 { background: #fff; border-radius: 16px; padding: 40px; box-shadow: 0 6px 24px rgba(79,64,56,.08); }
#orig .inner1 .img2 { text-align: center; }
/* 空気比較: 文章 左 / グラフ 右 */
#orig .inner2 .in-inner2 .ttl2, #orig .inner2 .in-inner2 .txt3 { grid-column: 1; }
#orig .inner2 .in-inner2 .sc { grid-column: 2; grid-row: 1 / span 2; }
#orig .inner2 .in-inner2 .img3 { position: static; }
/* 国の基準: 表 左 / 文章 右 */
#orig .inner3 .in-inner3 { align-content: center; }
#orig .inner2 .in-inner2 { align-content: center; }
#orig .inner3 .in-inner3 .img4 { grid-column: 1; grid-row: 1 / span 2; position: static; margin: 0; }
#orig .inner3 .in-inner3 .ttl2, #orig .inner3 .in-inner3 .txt3 { grid-column: 2; }

/*============================
 Q&A（#box-03）
============================*/
#box-03 { background: #f4f1ec; padding: 88px 20px 110px; }
#box-03 .inner .ttl { text-align: center; margin-bottom: 30px; }
#box-03 .inner .ttl .ss { display: block; margin-bottom: 8px; color: var(--m-text); font-size: 16px; line-height: 1.9; letter-spacing: .08em; }
#box-03 .inner .ttl .en { font-family: var(--m-serif); font-size: 44px; font-weight: 400; letter-spacing: .12em; line-height: 1.4; color: var(--m-dark); text-transform: uppercase; }
#box-03 .inner .txt-01 { text-align: center; color: #6b625b; font-size: 14px; letter-spacing: .1em; margin-bottom: 14px; }
#box-03 .inner .list { max-width: 960px; margin: 0 auto 40px; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
#box-03 .inner .list li { margin: 0; }
#box-03 .inner .list li a { display: block; width: auto; padding: 9px 22px; border: 1px solid var(--m-gold); border-radius: 999px; background: #fff; color: var(--m-brown); font-size: 14px; font-weight: 500; letter-spacing: .06em; line-height: 1.5; text-align: center; transition: background-color .2s, color .2s; }
#box-03 .inner .list li a:hover { background: var(--m-brown); border-color: var(--m-brown); color: #fff; }
#box-03 .inner .inc-sys { max-width: 960px; margin: 0 auto; }
#box-03 .inner .inc-sys .ttl2 { margin: 52px 0 16px; padding-left: 14px; border-left: 4px solid var(--m-gold); color: var(--m-dark); font-size: 19px; font-weight: 600; letter-spacing: .06em; line-height: 1.6; }
#box-03 .inner .inc-sys .list2 li { margin-bottom: 10px; }
#box-03 .inner .inc-sys .list2 .q-txt, #box-03 .inner .inc-sys .list2 .a-txt { display: flex; flex-wrap: nowrap; align-items: flex-start; gap: 12px; }
#box-03 .inner .inc-sys .list2 .cc { flex: 0 0 auto; width: auto; font-family: var(--m-serif); font-size: 22px; line-height: 30px; }
#box-03 .inner .inc-sys .list2 .sy-txt { flex: 1 1 0; min-width: 0; width: auto; max-width: none; margin: 0; color: var(--m-text); font-size: 16px; line-height: 1.9; letter-spacing: .03em; }
#box-03 .inner .inc-sys .list2 .q-txt { position: relative; cursor: pointer; padding: 14px 54px 14px 18px; background: #fff; border: 1px solid var(--m-line); border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,.04); transition: background-color .2s, border-color .2s; }
#box-03 .inner .inc-sys .list2 .q-txt:hover { background: #fbf6ee; border-color: var(--m-gold); }
#box-03 .inner .inc-sys .list2 .q-txt .cc { color: var(--m-brown); }
#box-03 .inner .inc-sys .list2 .q-txt .sy-txt { font-weight: 600; }
#box-03 .inner .inc-sys .list2 .q-txt::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--m-brown); font-size: 26px; line-height: 1; }
#box-03 .inner .inc-sys .list2 .q-txt.open { background: #fbf6ee; border-color: var(--m-gold); }
#box-03 .inner .inc-sys .list2 .q-txt.open::after { content: "−"; }
#box-03 .inner .inc-sys .list2 .a-txt { margin: 8px 0 14px; padding: 18px 20px 14px; background: #fff; border: 1px solid var(--m-line); border-left: 4px solid #c1272d; border-radius: 8px; }
#box-03 .inner .inc-sys .list2 .a-txt .cc { color: #c1272d; }
#box-03 .inner .inc-sys .list2 .a-txt .sy-txt { font-weight: 400; }
#box-03 .inner .inc-sys .list2 .a-txt img { max-width: 100%; height: auto; border-radius: 6px; }

/* 1100〜1280px 付近: 素材カードを 2 列に */
@media screen and (min-width: 768px) and (max-width: 1099px) {
  .bg-area #box-02 .inner .li-box .list { grid-template-columns: repeat(2, 1fr); }
}

/*============================
 SP
============================*/
@media screen and (max-width: 767px) {
  #box-01 .inner { margin-top: 13.5vw; padding-bottom: 12vw; }
  .sp-img2 { width: 100%; margin: 0; position: static; }
  .sp-img2 img { display: block; width: 100%; height: auto; }
  #box-01 .inner .txt-01 { margin: 9vw auto 5vw; font-size: 5vw; letter-spacing: .06em; }
  #box-01 .inner .txt-01::after { margin-top: 5vw; }
  #box-01 .inner .txt-box { font-size: 3.9vw; line-height: 2; letter-spacing: .04em; }

  .bg-area { background: #54453c url(../images/material/bg-ptn-01.jpg) repeat; padding: 10vw 4vw 12vw; }
  .bg-area #o-box .inner .bg-box { padding: 6vw 5vw 6vw; margin-bottom: 10vw; border-radius: 10px; }
  .sp-img { margin: 0 -5vw 4vw; }
  .sp-img img { display: block; width: 100%; height: auto; }
  .bg-area #o-box .inner .bg-box .ttl { font-size: 4.6vw; margin-bottom: 4vw; }
  .bg-area #o-box .inner .bg-box .txt-01 { font-size: 3.8vw; line-height: 1.95; }
  .bg-area #box-02 .inner .ttl { font-size: 6.4vw; letter-spacing: .08em; }
  .bg-area #box-02 .inner .ttl .ss { font-size: 3.8vw; }
  .bg-area #box-02 .inner .txt-box-01 { font-size: 3.8vw; margin-bottom: 8vw; }
  .bg-area #box-02 .inner .li-box .list { grid-template-columns: 1fr; gap: 6vw; padding: 0; width: auto; background: transparent; }
  .bg-area #box-02 .inner .li-box .list li { padding-bottom: 5vw; }
  .bg-area #box-02 .inner .li-box .list .li-pic { margin-bottom: 4vw; }
  .bg-area #box-02 .inner .li-box .list .li-pic img { height: 52vw; }
  .bg-area #box-02 .inner .li-box .li-ttlname { font-size: 3.4vw; top: 3vw; left: 3vw; }
  .bg-area #box-02 .inner .li-box .list .li-ttl { margin: 0 4.5vw 2vw; font-size: 4.8vw; }
  .bg-area #box-02 .inner .li-box .list .li-txt-box-01 { margin: 0 4.5vw 3vw; font-size: 3.9vw; padding-bottom: 3vw; }
  .bg-area #box-02 .inner .li-box .list .li-txt-box-02 { margin: 0 4.5vw; font-size: 3.8vw; line-height: 1.9; letter-spacing: .02em; }

  #orig .bx { padding: 12vw 5vw 14vw; width: auto; }
  #orig .bx .ttl { font-size: 4vw; margin-bottom: 6vw; }
  #orig .bx .ttl span { font-size: 6.4vw; }
  #orig .inner, #orig .inner1, #orig .inner2, #orig .inner3 { width: 100%; margin-bottom: 12vw; }
  #orig .inner3 { margin-bottom: 0; }
  #orig .inner .in-inner, #orig .inner2 .in-inner2, #orig .inner3 .in-inner3 { display: block; width: auto; }
  #orig .ttl1, #orig .ttl2 { font-size: 4.6vw; text-align: center; margin-bottom: 4vw; }
  #orig .txt1, #orig .txt3 { font-size: 3.7vw; line-height: 2; margin-bottom: 3vw; }
  #orig .txt2 { font-size: 3.2vw; }
  #orig .inner .in-inner .img1 { width: 100%; margin: 0 auto 4vw; }
  #orig .inner1 { padding: 4vw; overflow: hidden; border-radius: 10px; }
  #orig .inner1 .sc, #orig .inner2 .sc { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  #orig .inner1 .img2, #orig .inner2 .img3 { width: 140vw; height: auto; overflow: visible; }
  #orig .inner1 .img2 img, #orig .inner2 .img3 img { width: 140vw; max-width: none; border-radius: 0; }
  #orig .inner2 .sc { margin-bottom: 5vw; }
  #orig .inner3 .in-inner3 .img4 { width: 100%; margin: 0 auto 5vw; }

  #box-03 { padding: 12vw 4vw 14vw; }
  #box-03 .inner .ttl .ss { font-size: 3.8vw; }
  #box-03 .inner .ttl .en { font-size: 9vw; }
  #box-03 .inner .txt-01 { font-size: 3.6vw; }
  #box-03 .inner .list { gap: 2.4vw; margin-bottom: 8vw; }
  #box-03 .inner .list li { width: calc(50% - 1.2vw); }
  #box-03 .inner .list li a { padding: 2.6vw 1vw; font-size: 3.7vw; }
  #box-03 .inner .inc-sys { width: 100%; }
  #box-03 .inner .inc-sys .ttl2 { margin: 10vw 0 3vw; font-size: 4.6vw; padding-left: 3vw; }
  #box-03 .inner .inc-sys .list2 .sy-txt { font-size: 3.9vw; line-height: 1.85; }
  #box-03 .inner .inc-sys .list2 .cc { font-size: 5.4vw; line-height: 7vw; }
  #box-03 .inner .inc-sys .list2 .q-txt { padding: 3vw 10vw 3vw 3vw; gap: 2.5vw; }
  #box-03 .inner .inc-sys .list2 .q-txt::after { right: 3vw; font-size: 6vw; }
  #box-03 .inner .inc-sys .list2 .a-txt { padding: 3.5vw 3vw 2.5vw; gap: 2.5vw; }
}