/* Document */

.document_group:not(:last-of-type) {
    margin-bottom: 5em;
}
.document_group h3.title {
    font-size: 1.3em;
}
.document_group_desc {
    margin-bottom: 2em;
}
.document_group_desc p {
    font-size: 1.1em;
    line-height: 2em;
    line-height: 1.5em;
}
.document_pane {
    float: left;
    width: 32%;
    width: 48%;
    color: #909090;
    background: #fafafa;
	border: solid 1px #ddd;
    border-radius: 10px;
    transition: all 300ms ease-in-out;
}
.document_pane:hover {
    transform: scale(1.03);
    transition: all 200ms ease-in-out;
}
.document_pane a {
    position: relative;
    display: block;
    padding: 1.2em 1.5em;
    width: 100%;
    height: 100%;
    text-decoration: none;
}
.document_pane a::before {
    position: absolute;
    top: 1.2em;
    right: 1.5em;
    content: '';
    width: 23px;
    height: 23px;
    background: url(../images/common/icon_download.png) no-repeat center / 100%;
    opacity: 0.3;
}
._document_pane:nth-of-type(3n - 1) {
    margin: 0 2%;
}
._document_pane:nth-of-type(3n + 1) {
    clear: both;
}
._document_pane:nth-last-of-type(n + 4) {
    margin-bottom: 1.5em;
}
.document_pane:nth-of-type(even) {
    float: right;
}
.document_pane:nth-of-type(2n + 1) {
    clear: both;
}
.document_pane:nth-last-of-type(n + 3) {
    margin-bottom: 1.5em;
}
.document_cover {
    float: left;
    width: 16%;
}
.document_date {
    position: absolute;
    bottom: 1.2em;
    right: 1.5em;
    color: #aaa;
    font-size: 0.9em;
    letter-spacing: 0;
    line-height: 1.2em;
}
.document_pane h4 {
    float: right;
    width: 80%;
    padding-right: 30px;
    font-weight: 500;
    line-height: 1.5em;
}
.document_pane h4 span {
    margin-left: 0.5em;
    font-size: 0.8em;
    font-weight: 400;
    letter-spacing: 0;
}