@charset "utf-8";
html,
body {
    height: auto;
}

* {
    box-sizing: border-box;
}

img {
    vertical-align: middle;
    max-width: 100%;
}

a {
    color: #333333;
}

.btn {
    background-color: #4da1ca;
    border: 0.1rem solid #4da1ca;
    border-radius: .4rem;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    font-size: 1.6rem;
    font-weight: 700;
    width: 100%;
    max-width: 300px;
    height: 4.8rem;
    letter-spacing: .1rem;
    line-height: 4.8rem;
    padding: 0 3.0rem;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 16px;
    line-height: 1.8em;
    color: #333333;
    background-color: #ffffff;
    /* text-shadow: 1px 2px 2px rgba(0, 0, 0, 0.3);*/
    -webkit-text-size-adjust: 100%;
    overflow-wrap: break-word;
    margin: 0;
    overflow-x: hidden;
    width: 100%;
}

.inner {
    width: 1024px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

a {
    text-decoration: none;
}

.mb {
    margin-bottom: 40px;
}

.mt {
    margin-top: 40px;
}

.mmt {
    margin-top: -40px;
}

.mmtxl {
    margin-top: -130px;
}

.mbm {
    margin-bottom: 20px;
}

.mtm {
    margin-bottom: 20px;
}

.mbxl2 {
    margin-bottom: 80px;
}

.mbxl {
    margin-bottom: 260px;
}

.pb {
    padding-bottom: 40px;
}

.pt {
    padding-top: 40px;
}

.ptxl {
    padding-top: 80px;
}

.pbm {
    padding-bottom: 20px;
}

.ptm {
    padding-bottom: 20px;
}

.cen {
    text-align: center;
}

.left {
    text-align: left;
}

.right {
    text-align: right;
}

.wrap {
    width: 100%;
}

.w40 {
    width: 39%;
}

.w50 {
    width: 49%;
}

.w60 {
    width: 59%;
}

.space {
    height: 60px;
}

.fontb {
    font-size: 120%;
}

.fontm {
    font-size: 80%;
    line-height: 1.6em;
}

h1 {
    font-size: 200%;
    font-weight: 700;
    line-height: 1.2em;
}

blockquote {
    padding: .25em 1em;
    border-left: 2px solid #0c0000;
    border-right: 2px solid #0c0000;
}

strong {
    font-style: normal;
    font-weight: 700;
}

.key {
    text-align: center;
}

.key img {
    width: 60%;
}

footer {
    background: #ffffff;
}

footer .cen img {
    width: 200px;
}

.copy {
    font-size: 80%;
    color: #999999;
}


/**Hover*/

a:hover,
a:hover img {
    opacity: 1;
    -webkit-animation: flash 1.0s;
    animation: flash 1.0s;
}

@-webkit-keyframes flash {
    0% {
        opacity: .4;
    }
    100% {
        opacity: 1;
    }
}

@keyframes flash {
    0% {
        opacity: .4;
    }
    100% {
        opacity: 1;
    }
}


/*body*/

header {
    width: 100%;
    border-bottom: 1px solid #e4e4e4;
    position: fixed;
    top: 0;
    left: 0;
    background: #ffffff;
    z-index: 10;
}

header .flexb {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-weight: bold;
    font-size: 20px;
    letter-spacing: 0.1em;
    margin-left: 35px;
    margin-right: 30px;
}

header h2 {
    font-family: "Noto Sans CJK JP";
    font-weight: normal;
    font-size: 16px;
    letter-spacing: 0.1em;
    text-align: left;
    color: #b2b2b2;
    margin-right: auto;
}

a.submitbtn {
    background: #000;
    font-weight: bold;
    font-size: 20px;
    letter-spacing: 0.1em;
    text-decoration: none;
    color: #fff;
    display: inline-block;
    padding: 35px;
    text-align: center;
}

a.submitbtn:after {
    content: "→";
    margin-left: 10px;
}

section.key {
    min-height: 860px;
    width: 100%;
    margin-top: 100px;
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    align-content: center;
    justify-content: center;
    background-image: url(img/key_bg.jpg);
    background-position: right top;
    background-size: auto 100%;
    background-repeat: no-repeat;
}

section.key .key_parts {
    display: flex;
    align-items: flex-start;
    flex-direction: column;
    align-content: center;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    margin-top: -3%;
}

section.key .sub {
    background: #b7b7b7;
    padding: 10px 20px;
    color: #ffffff;
    font-weight: bold;
    margin-bottom: 30px;
    display: inline-block;
}

section.key img {
    width: 100%;
    max-width: 665px;
}

.lead {
    font-weight: bold;
    font-size: 42px;
    letter-spacing: 0.1em;
    line-height: 80px;
    color: #000;
}

span.tu {
    text-decoration: underline;
    text-underline-offset: 10px;
    text-decoration-thickness: 3px;
}

section.lead {
    text-align: left;
}

.bigimg01 {
    background: url(img/bigimg01.jpg) center center no-repeat;
    background-attachment: fixed;
    background-size: 100% auto;
    min-height: 400px;
    text-align: right;
}

.bigimg01 img {
    width: 60%;
    margin-top: -30px;
}

.bg_gr {
    background-color: #F8F8F8;
}

.arrow_d {
    position: relative;
    bottom: -100px;
    width: 80%;
}

h4 {
    position: relative;
    padding: 0.25em 3em;
    margin: 0 0;
    top: 0;
    display: inline-block;
}

h4:before,
h4:after {
    position: absolute;
    top: 0;
    content: '';
    width: 10px;
    height: 100%;
    display: inline-block;
    box-sizing: border-box;
}

h4:before {
    border-left: solid 2px #000000;
    border-top: solid 2px #000000;
    border-bottom: solid 2px #000000;
    left: 0;
}

h4:after {
    border-top: solid 2px #000000;
    border-right: solid 2px #000000;
    border-bottom: solid 2px #000000;
    right: 0;
}

h4 p {
    margin: 0;
    padding: 0;
}

footer {
    background: #000000;
    color: #ffffff;
}

footer .flexb {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

footer a {
    text-decoration: none;
    color: #ffffff;
}


/*body*/

@media screen and (min-width: 768px) {
    .sponly {
        display: none;
    }
}

@media screen and (max-width: 768px) {
    body {
        font-size: 16px;
    }
    .inner {
        width: 100%;
        margin: 0 auto;
        position: relative;
        padding: 0 2%;
    }
    .spbr {
        display: block;
    }
    .spl {
        text-align: left;
    }
    .pcpt {
        padding-top: 10px;
        padding-bottom: 0px;
        margin-top: -10px;
    }
    .sppt {
        padding-top: 20px;
    }
    .pconly {
        display: none;
    }
    .mbxl2 {
        margin-bottom: 60px;
    }
    .lead {
        font-weight: bold;
        font-size: 29px;
        letter-spacing: 0.01em;
        line-height: 50px;
        color: #000;
    }
    header {
        padding: 0 2%;
        position: relative;
    }
    header h1 {
        font-weight: bold;
        font-size: 20px;
        letter-spacing: 0.1em;
        margin-left: 10px;
        margin-right: 10px;
        text-align: center;
    }
    header h2 {
        font-weight: normal;
        font-size: 17px;
        letter-spacing: 0.1em;
        text-align: center;
        color: #b2b2b2;
        margin-right: 5px;
    }
    header .flexb>div {
        width: 60%;
    }
    section {}
    a.submitbtn {
        background: #000;
        font-weight: bold;
        font-size: 16px;
        letter-spacing: 0.1em;
        text-decoration: none;
        color: #fff;
        display: inline-block;
        padding: 20px 10px;
        text-align: center;
        line-height: 1.4em;
        width: 220px;
    }
    section.key {
        min-height: 400px;
        width: 100%;
        margin-top: 0px;
        display: flex;
        align-items: flex-start;
        flex-direction: column;
        align-content: center;
        justify-content: center;
        background-image: url(img/key_bg.jpg);
        background-position: right top;
        background-size: auto 100%;
        background-repeat: no-repeat;
    }
    .bigimg01 {
        position: relative;
        background-attachment: inherit;
        background-size: cover;
    }
    .bigimg01 .inner {}
    footer .flexb {
        display: flex;
        flex-direction: column;
        font-size: 12px;
        text-align: center;
    }
}