@charset "utf-8";

@media screen and (min-width : 769px) {

    #contents_area {
        color: #333;
    }

    .inner {
        position: relative;
        margin: 0 auto;
        width: 980px;
    }

    .inner::after {
        content: "";
        display: block;
        clear: both;
    }
    
    #nav {
        position: relative;
        width: 200px;
        float: left;
    }

    #nav_inner {
        height: 100%;
    }

    #nav .logo {
        position: absolute;
        top: 0;
        left: 0;
        width: 205px;
        height: 127px;
        z-index: 1;
    }

    #nav .logo img {
        max-width: 100%;
    }

    #nav_list {
        position: relative;
        margin-top: 90px;
        width: 194px;
        height: calc(100% - 90px) !important;
        background-color: #f2f2f2;
        border-top-right-radius: 10px;
        border-bottom-right-radius: 10px;
        background: url(../image_common/nav_bg.jpg) repeat-y;
        background-size: 194px 6px;
    }

    #nav_list_inner {
        width: 189px;
    }

    .nav_list {
        padding: 16px 8px 32px;
    }

    #nav_list:before {
        display: block;
        content: "";
        width: 194px;
        height: 16px;
        background: url(../image_common/nav_bg_tp.jpg) no-repeat top;
        background-size: 194px 16px;
    }

    #nav_list:after {
        position: absolute;
        bottom: 0;
        display: block;
        content: "";
        width: 194px;
        height: 16px;
        background: url(../image_common/nav_bg_btm.jpg) no-repeat bottom;
        background-size: 194px 16px;
    }

    .nav_list li p {
        margin: 16px 0 10px;
        padding-left: 5px;
        color: #c51a22;
        font-size: 15px;
        font-weight: bold;
    }

    .nav_list li.engine p {
        margin-bottom: 6px;
    }

    .nav_list li {
        font-size: 12px;
        line-height: 1.5;
    }

    .nav_list li.parents {
        position: relative;
        padding-bottom: 5px;
    }

    .nav_list li:not(:last-child).parents:after {
        position: absolute;
        bottom: 0;
        content: "";
        width: 100%;
        height: 1.5px;
        background: linear-gradient(0deg, #c31c24 0%, #c51a22 36.8132%, rgba(92,0,10,1) 100%);
    }

    .nav_list li ul {
        padding-left: 6px;
    }

    .nav_list li ul li {
        margin-bottom: 10px;
        padding-left: 10px;
        text-indent: -10px;
    }

    #nav .nav_list li a {
        color: #333;
    }

    #nav .nav_list li.current a {
        color: #c51a22;
        text-decoration: underline;
    }

    .nav_list li ul li a:before {
        position: relative;
        top: 3px;
        display: inline-block;
        margin-right: 5px;
        content: "";
        width: 6px;
        height: 12px;
        background: url(../image_common/parts_ico_ap_arrow.png) no-repeat;
        background-size: 6px auto;
    }

    .nav_list li ul.ac_parts_list li a:before {
        background: url(../image_common/parts_ico_ac_arrow.png) no-repeat;
        background-size: 6px auto;
    }

    .nav_list ul.ap_parts_list li.current a:before {
        background: url(../image_common/parts_ico_red_arrow.png) no-repeat;
        background-size: 6px auto;
    }

    .ac_parts_list {
        margin-top: 13px;
        padding-top: 15px;
        position: relative;
    }

    .ac_parts_list:before {
        position: absolute;
        top: 0;
        left: 16px;
        display: block;
        content: "";
        width: 156px;
        height: 1.5px;
        background: linear-gradient(0deg, #fff 0%, #999 100%);
    }

    #nav .nav_list .ac_parts_list a {
        color: #666;
    }

    #hdnav {
        position: absolute;
        top: 8px;
        right: 0;
    }

    #hdnav ul {
        display: flex;
    }

    #hdnav li:not(:first-child) {
        padding-left: 23px;
    }

    #hdnav li a{
        color: #333;
        font-size: 10px;
    }

    #hdnav li a:before {
        position: relative;
        top: 1px;
        display: inline-block;
        margin-right: 5px;
        content: "";
        width: 0px;
        height: 0px;
        border-top: 4px solid transparent;
        border-left: 4px solid #e40615;
        border-bottom: 4px solid transparent;
    }
    
    

    /* ------------------------------------------------------------
    *
        #main
    *
    ------------------------------------------------------------ */

    #main {
        width: 780px;
        float: right;
    }

    #main img {
        vertical-align: middle;
    }

    #page {
        display: flex;
    }

    #main .m_head {
        margin-bottom: 35px;
    }

    #main .m_head h1 {
        margin: 45px 0 12px;
        padding: 0 0 5px 50px;
        border-bottom: 2.5px solid #e40615;
        font-size: 28px;
        font-weight: bold;
    }

    .m_head .eng {
        padding-left: 20px;
        font-size: 16px;
        font-weight: normal;
    }

    .m_head_in {
        padding-left: 50px;
        width: 699px;
        line-height: 1.5;
    }

    .m_head p {
        font-size: 16px;
    }

    .m_head h2 {
        margin: 35px 0 0;
        font-size: 22px;
        font-weight: bold;
        line-height: 1.56;
    }

    .m_head .copy {
        margin-top: 22px;
        font-size: 16px;
    }

    .main_in {
        margin: 0 auto;
        width: 730px;
    }

    #main .desc {
        font-size: 16px;
    }

    .mb_0 {
        margin-bottom: 0 !important;
    }

    .mb_sm {
        margin-bottom: 6px !important;
    }

    .mb_20 {
        margin-bottom: 20px !important;
    }

    /* ------------------------------------------------------------
    *
        .section
    *
    ------------------------------------------------------------ */
    .section {
        margin-bottom: 0;
        padding-left: 28px;
        color: #333;
        background-color: #fff;
    }

    .center {
        text-align: center;
    }

    .section .pic {
        margin-bottom: 20px;
    }

    .section h2 {
        margin-bottom: 25px;
        font-size: 22px;
        font-weight: bold;
        line-height: 1.56;
    }

    .section .desc {
        margin-bottom: 25px;
        line-height: 1.5em;
    }

    .section .sec_inner {
        margin-left: 20px;
    }

    .bg_gray {
        background-color: #eee;
    }

    .block {
        margin: 0 0 45px;
    }


    /* ------------------------------------------------------------
    *
        title
    *
    ------------------------------------------------------------ */
    .tit_headline {
        padding: 0 0 1px 5px;
        box-sizing: border-box;
        border-bottom: 2px solid #e40615;
        font-size: 21px;
        font-weight: bold;
        line-height: 1.5em;
    }

    .tit_headline span {
        font-size: 14px;
        line-height: 1;
    }

    .tit_headline .up {
        display: block;
    }

    .tit_square {
        position: relative;
        margin-bottom: 22px;
        color: #c51a22;
        font-size: 21px;
        font-weight: bold;
        line-height: 1.2;
    }

    .tit_square span {
        position: relative;
        display: inline-block;
        padding-right: 26px;
        background-color: #fff;
        z-index: 1;
    }

    .tit_square::after {
        position: absolute;
        top: 51%;
        left: 0;
        content: "";
        width: 100%;
        height: 1px;
        background-color: #c51a22;
        transform: translateY(-50%);
    }

    .section .tit_leftline {
        padding-left: 20px;
        border-left: 2px solid #e40615;
        font-size: 16px;
        font-weight: bold;
        line-height: 1.45;
    }
    
    /*------ .section_column ------*/

    .section_column h4 {
        font-size: 22px;
        line-height: 1.4em;
        white-space: nowrap;
    }

    .section_column .desc {
        line-height: 1.5em;
        letter-spacing: 1px;
    }

    .section_column img {
        vertical-align: middle;
    }
    
    /*------ .box ------*/

    .box {
        position: relative;
        margin-bottom: 20px;
        padding: 30px 25px 0;
        border: 2px solid #e6e6e6;
        border-radius: 10px;
        box-sizing: border-box;
        min-height: 254px;
    }

    .box .tit_headline {
        margin-bottom: 10px;
        width: 465px;
    }

    .box .tit_headline.full {
        width: 100%;
    }

    .box .tit_headline.sm {
        width: 383px;
    }

    .box_01 {
        padding-bottom: 17px;
    }

    .box .img {
        position: absolute;
        top: 50px;
        right: 37px;
    }

    .box .img img {
        max-width: 100%;
    }

    .box .box_info {
        padding-left: 5px;
        width: 465px;
        font-size: 16px;
        line-height: 1.6em;
        box-sizing: border-box;
    }

    .box .box_info.sm {
        width: 383px;
    }

    .box .box_info.full {
        width: 100%;
    }

    .box .desc {
        margin-bottom: 15px;
        min-height: 48px;
    }

    .box .cap {
        margin: 12px 0 10px;
    }

    .box .cap li:not(.no_disc),.box .caution li,.bg_box .caution p {
        padding-left: 14px;
        text-indent: -14px;
    }

    .box .cap .no_disc {
        padding-left: 14px;
        font-size: 14px;
        line-height: 1.4em;
    }

    .txt_red {
        color: #e40615;
    }

    .box .caution,.bg_box .caution {
        font-size: 12px;
        line-height: 1.6;
    }

    .box_sm {
        margin-bottom: 25px;
        padding-top: 45px;
        min-height: 251px;
    }

    .box_sm .img {
        top: 13px;
    }

    .box_md {
        padding-top: 50px;
    }

    .box_md .desc {
        margin-bottom: 5px;
    }

    .bg_box {
        padding: 20px 18px 18px;
        background-color: #f2f2f2;
    }

    .bg_box h4 {
        margin-bottom: 12px;
        padding-left: 2px;
        color: #4d4d4d;
        font-size: 18px;
        font-weight: bold;
    }

    .bg_box .desc {
        font-size: 11px;
        line-height: 1.5;
    }

    .bg_box .desc:not(:last-child){
        margin-bottom: 12px;
    }

    .bg_box .caution {
        margin-top: 22px;
    }
    
    /* ------------------------------------------------------------
    *
        #search
    *
    ------------------------------------------------------------ */

    #search {
        margin-top: 40px;
        padding: 50px 0;
        font-size: 16px;
        text-align: center;
        line-height: 1.6;
    }

    .search_btn {
        margin-top: 35px;
        text-align: center;
    }

    .search_btn img {
        width: 458px;
    }
}