:root {
    color: #333;
}

body {
    font-family: "Hiragino Kaku Gothic StdN W4";
    padding: 0;
    margin: 0 auto;
}

img {
    width: 100%;
}

header {
    margin: 140px 0 40px 0;
}

h2 {
    font-size: 20px;
}

h3 {
    font-size: 16px;
    font-weight: 300;
}

.r-btn {
    background: #f4f4f4;
}

header h1 {
    font-size: 26px;
    font-weight: normal;
    letter-spacing: 8px;
    text-align: center;
}

header h3 {
    margin-top: 20px;
    font-size: 15px;
    font-weight: normal;
    text-align: center;
}

.concept {
    display: flex;
    margin-bottom: 49px;
}

.concept-title {
    width: 249px;
    margin: 191px 34px 0 50px;
}

.concept-title img {
    width: auto;
    height: 100px;
}
.concept-img img {
    width: 512px;
}

.concept-title p {
    font-family: "Hiragino Kaku Gothic StdN W3", "Hiragino Kaku Gothic W3",
    "Hiragino Kaku Gothic Pro", "游ゴシック体", "Yu Gothic", YuGothic,
    "メイリオ", Meiryo, "MS Pゴシック", "MS PGothic", sans-serif;
    margin-top: 34px;
    font-size: 14px;
    font-weight: 300;
    letter-spacing: .7px;
    line-height: 26px;
    letter-spacing: .05em;
    text-align: left;
}

.painting {
    display: inline-flex;
    justify-content: center;
    margin-bottom: 58px;
}

.title-block {
    padding-right: 77px;
    border-right: 1px solid #bbb;
}

.title-block img {
    width: 365px;
    display: table;
    margin-bottom: 30px;
}

.text-title img {
    width: 84px;
}

.text-naturalWood img {
    width: 116px;
}

.red-txt {
    color: #842f2f;
    font-size: 12px;
    font-weight: bold;
}

.red-txt span {
    color: #333;
}

.t-discription {
    font-size: 13px;
    width: 365px;
}

.discription-block {
    padding-left: 77px;
    width: 681px;
}

.discription-block h2 {
    margin: 0 0 24px 0;
    font-weight: normal;
}

.discription-block p {
    font-size: 13px;
}

.image-list, .image-list-min {
    display: flex;
    justify-content: space-between;
	align-items: flex-start;
}
.image-list:not(:first-of-type) {
    margin-top: 38px;
}

.image-list-min {
    margin-top: 22px;
}

.image-list-min img {
    margin: 0;
    width: 158px;
    height: 367px;
}

.image-list img {
    margin: 0;
    width: 158px;
    height: 588px;
}

.image-list-ikus-lumber {
    margin-top: 22px;
    display: flex;
    justify-content: space-between;
}
.image-list-ikus-lumber img {
    margin: 0;
    width: 158px;
    height: 367px;
}

.image-list-lumber {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding-right: 16px;
}

.image-list-lumber img {
    width: 332px;
    height: 175px;
}

.image-list-ikus {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.bw-section {
    display: flex;
    font-family: "Hiragino Kaku Gothic StdN W3", "Hiragino Kaku Gothic W3",
    "Hiragino Kaku Gothic Pro", "游ゴシック体", "Yu Gothic", YuGothic,
    "メイリオ", Meiryo, "MS Pゴシック", "MS PGothic", sans-serif;
    justify-content: flex-start;
    font-weight: 300;
    width: 100%;
    margin: 25px 0;
}

.bw-section:last-of-type {
    margin-bottom: 0;
}

.n-list {
    margin-top: 20px;
}

.bw-section .t-txt {
    line-height: 23px;
    color: #842f2f;
    font-size: 13px;
}

.bw-section .t-txt h5 {
    font-weight: normal;
    font-size: 13px;
    margin-top: 0;
}

.bw-section p {
    line-height: 23px;
    margin: 0;
}

.t-txt span {
    color: #333;
}

.u-block {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    margin-top: 56px;
}

.t-txt, .b-right {
    margin-right: 15px;
}

.b-right, .b-left, .t-txt, .bw-section p {
    width: 331px;
}

.b-right p, .b-left p {
    line-height: 26px;
    margin-bottom: 0;
}

.b-right p span, .b-left p span {
    line-height: 22px;
    font-size: 12px;
}

@media (max-width: 1199px) {
    .concept {
        width: 100%;
    }
    .concept-title {
        width: 40%;
        margin: 0;
    }
    .concept-img {
        width: 60%;
    }
    .concept-img img {
        width: 100%;
        height: auto;
    }
    .painting {
        width: 100%;
    }
    .title-block, .discription-block {
        width: 50%;
        box-sizing: border-box;
    }
    .title-block > img {
        width: 100%;
    }
    .t-discription {
        width: 100%;
    }
    .image-list {
        flex-wrap: wrap;
    }
    .image-list img, .image-list-min img {
        width: calc(25% - 5px);
        height: 158px;
    }


    .image-list-lumber {
        padding-right: 8px;
    }

    .image-list-lumber img {
        width: 200px;
        height: 112.5px;
    }
    .image-list-lumber img:first-child {
        padding-bottom: 8px;
    }


    .image-list-ikus img {
        width: 98.75px;
        height: 233px;
    }
    .image-list-ikus img:first-child {
        padding-right: 8px;
    }
}

@media (max-width: 768px) {
    .u-block {
        flex-wrap: wrap;
        margin: 0;
    }

    .b-left, .b-right {
        width: 100%;
        margin: 0;
    }

    .br-sp {
        display: none;
    }

    .image-list-lumber {
        padding-right: 8px;
    }

    .image-list-lumber img {
        width: 142px;
        height: 74.5px;
    }
    .image-list-lumber img:first-child {
        padding-bottom: 8px;
    }


    .image-list-ikus img {
        width: 66.38px;
        height: 157.5px;
    }
    .image-list-ikus img:first-child {
        padding-right: 8px;
    }
}