@charset "UTF-8";

/* base (reset)
---------------------------------------------------*/
body {
    width: 100%;
    margin: 0 auto;
    padding: 0;
}
h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin: 0;
    padding: 0;
    font-weight: 400;
}
ul,
ol,
dl,
dt,
dd {
    margin: 0;
    padding: 0;
}
ol,
li {
    list-style: none;
}
img {
    border: none;
    line-height: 0;
    font-size: 0;
    vertical-align: middle;
    max-width: 100%;
}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
    display: block;
}

/* ---------- */
a {
    margin: 0;
    padding: 0;
    font-size: inherit;
    background: transparent;
}
th,
td {
    font-style: normal;
    font-weight: normal;
    font-size: inherit;
    empty-cells: show;
}
input,
select {
    vertical-align: middle;
}
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    border-radius: 0;
}
pre {
    white-space: -moz-pre-wrap; /* Mozilla */
    white-space: pre-wrap; /* CSS3 */
    word-wrap: break-word; /* IE 5.5+ */
}
figure {
    margin: 0;
}

/* Selected Text
---------------------------------------------------*/
::selection {
    background: #191919;
    color: #fff;
}

/* color
---------------------------------------------------*/
:root {
    --main-color: #333333;
    --primary-color: #06c688;
    --secondary-color: #3C91E6;
    --background-color: #fafafa;
    --white-color: #ffffff;
    --orange-color: #F7FF16;
    /*---*/
    --font-size-l: 24px;
    --font-size-m: 20px;
    --font-size-n: 16px;
    --font-size-s: 12px;
    /*--*/
    --length-200: 200px;
    --length-100: 100px;
    --length-60: 60px;
    --length-40: 40px;
    --length-20: 20px;
    --length-10: 10px;
    --length-5: 5px;
}

/* 768px */
@media screen and (max-width: 768px) {
    :root {
        --font-size-l: 5.625vw;
        --font-size-m: 4.375vw;
        --font-size-n: 3.75vw;
        --font-size-s: 2.8125vw;
        /*---*/
        --length-200: 31.25vw;
        --length-100: 15.625vw;
        --length-60: 9.375vw;
        --length-40: 6.25vw;
        --length-20: 3.125vw;
        --length-10: 1.5625vw;
        --length-5: 0.78125vw;
    }
}

/* BASE
---------------------------------------------------*/
html {
    margin: 0;
    padding: 0;
    font-size: 62.5%;
    overflow-y: scroll;
}
body {
    width: 100%;
    line-height: 1;
    color: #333;
    font-size: var(--font-size-n);
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    background: var(--background-color);
    position: relative;
}
* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box
}
:before,
:after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box
}

/* scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    border-radius: 10px;
    box-shadow: inset 0 0 6px rgba(0, 0, 0, .1);
}
::-webkit-scrollbar-thumb {
    background-color: rgba(39, 57, 76, 0.6);
    border-radius: 10px;
    box-shadow:0 0 0 1px rgba(255, 255, 255, .3);
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    body {
        -webkit-text-size-adjust: 100%;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
    }
}

/* link
---------------------------------------------------*/
a {
    text-decoration: none;
}
a:link,
a:visited,
a:active {
    color: var(--main-color);
}
a:hover {
    color: var(--secondary-color);
}
a,
.hover {
    -moz-transition: opacity 0.5s;
    -webkit-transition: opacity 0.5s;
    -o-transition: opacity 0.5s;
    -ms-transition: opacity 0.5s;
    transition: opacity 0.5s;
}
.hover:hover {
    opacity: 0.8;
    -moz-opacity: 0.8;
    filter: alpha(opacity=80);
    -moz-transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -o-transition: all 0.5s;
    -ms-transition: all 0.5s;
    transition: all 0.5s;
}
a.u {
    text-decoration: underline;
}

/* svg
---------------------------------------------------*/
svg {
    fill: #000;
}

/* wrapper
---------------------------------------------------*/
#wrapper {
    position: relative;
}
#main-wrapper {
    max-width: 800px;
    letter-spacing: 0.1em;
    margin: 0 auto;
}
/* contents-wrap */
.contents-wrap {
    position: relative;
    width: 96%;
    max-width: 800px;
    margin: 0 auto;
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    .contents-wrap {
        width: 93.75vw;
    }
}

/* entry
---------------------------------------------------*/
#entry {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    background-color: rgba(0,0,0,0.6);
    padding: var(--length-10);
}
#entry img {
    max-width: 600px;
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    #entry img {
        max-width: none;
        width: 93.75vw;
    }
}

/* mv
---------------------------------------------------*/
#mv .inner {
    position: relative;
}
#mv .inner .figures,
#mv .inner .figures .figure,
#mv .inner .figures .figure img {
    width: 100%;
}
#mv .inner .logo {
    position: absolute;
    top: 380px;
    left: 50%;
    transform: translate(-50%, 0);
    width: 42.75%;
}
#mv .inner .logo img {
    width: 100%;
    filter: drop-shadow(0 3px 6px rgba(0,0,0,0.4));
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    #mv .inner .logo {
        top: 73.4375vw;
        width: 53.125vw;
    }
}

/* intro
---------------------------------------------------*/
#intro,
#intro img {
    width: 100%;
}

/* safety
---------------------------------------------------*/
#safety,
#safety img {
    width: 100%;
}

/* howto
---------------------------------------------------*/
#howto {
    width: 100%;
    margin-bottom: var(--length-60);
}
#howto .ttl-section {
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-l);
    font-weight: bold;
    background-color: var(--primary-color);
    padding: 1em;
    margin-bottom: var(--length-40);
}
#howto .ttl-block {
    text-align: center;
    margin-bottom: var(--length-40);
}
#howto .ttl-block span {
    display: inline-block;
    color: var(--white-color);
    font-size: var(--font-size-l);
    font-weight: bold;
    background-color: var(--primary-color);
    border-radius: var(--length-20);
    padding: 0.5em 2em;
}
#howto .step {
    position: relative;
    background-color: var(--white-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--length-10);
}
#howto .step:not(:last-of-type) {
    margin-bottom: calc(var(--length-100) + var(--length-20));
}
#howto .step:not(:last-of-type)::after {
    position: absolute;
    content: '';
    top: calc(100% + var(--length-20));
    left: 50%;
    transform: translate(-50%, 0);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: var(--length-60) var(--length-100) 0 var(--length-100);
    border-color: var(--primary-color) transparent transparent transparent;
}
#howto .step .ttl-step {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-m);
    font-weight: bold;
    border-radius: var(--length-10);
    background-color: var(--primary-color);
    padding: 0.5em;
    overflow: hidden;
}
#howto .step .figure {
    text-align: center;
    padding: var(--length-60) var(--length-20) var(--length-40);
}
#howto .step .explain {
    border: 2px solid var(--length-10);
    border-bottom-left-radius: var(--length-5);
    border-bottom-right-radius: var(--length-5);
    background-color: var(--primary-color);
    padding: var(--length-20);
    overflow: hidden;
}
#howto .step .explain p {
    line-height: 1.4em;
    color: var(--white-color);
    font-size: var(--font-size-n);
}
#howto .step .explain span {
    color: var(--orange-color);
    font-weight: bold;
}

/* appeal
---------------------------------------------------*/
#appeal {
    width: 100%;
    text-align: center;
    background-color: var(--primary-color);
    padding: var(--length-60) var(--length-20) var(--length-200);
}
#appeal .copy {
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-s);
    margin-top: var(--length-40);
}@charset "UTF-8";

/* base (reset)
---------------------------------------------------*/
body {
    width: 100%;
    margin: 0 auto;
    padding: 0;
}
h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin: 0;
    padding: 0;
    font-weight: 400;
}
ul,
ol,
dl,
dt,
dd {
    margin: 0;
    padding: 0;
}
ol,
li {
    list-style: none;
}
img {
    border: none;
    line-height: 0;
    font-size: 0;
    vertical-align: middle;
    max-width: 100%;
}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
    display: block;
}

/* ---------- */
a {
    margin: 0;
    padding: 0;
    font-size: inherit;
    background: transparent;
}
th,
td {
    font-style: normal;
    font-weight: normal;
    font-size: inherit;
    empty-cells: show;
}
input,
select {
    vertical-align: middle;
}
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    border-radius: 0;
}
pre {
    white-space: -moz-pre-wrap; /* Mozilla */
    white-space: pre-wrap; /* CSS3 */
    word-wrap: break-word; /* IE 5.5+ */
}
figure {
    margin: 0;
}

/* Selected Text
---------------------------------------------------*/
::selection {
    background: #191919;
    color: #fff;
}

/* color
---------------------------------------------------*/
:root {
    --main-color: #333333;
    --primary-color: #06c688;
    --secondary-color: #3C91E6;
    --background-color: #fafafa;
    --white-color: #ffffff;
    --orange-color: #F7FF16;
    /*---*/
    --font-size-l: 24px;
    --font-size-m: 20px;
    --font-size-n: 16px;
    --font-size-s: 12px;
    /*--*/
    --length-200: 200px;
    --length-100: 100px;
    --length-60: 60px;
    --length-40: 40px;
    --length-20: 20px;
    --length-10: 10px;
    --length-5: 5px;
}

/* 768px */
@media screen and (max-width: 768px) {
    :root {
        --font-size-l: 5.625vw;
        --font-size-m: 4.375vw;
        --font-size-n: 3.75vw;
        --font-size-s: 2.8125vw;
        /*---*/
        --length-200: 31.25vw;
        --length-100: 15.625vw;
        --length-60: 9.375vw;
        --length-40: 6.25vw;
        --length-20: 3.125vw;
        --length-10: 1.5625vw;
        --length-5: 0.78125vw;
    }
}

/* BASE
---------------------------------------------------*/
html {
    margin: 0;
    padding: 0;
    font-size: 62.5%;
    overflow-y: scroll;
}
body {
    width: 100%;
    line-height: 1;
    color: #333;
    font-size: var(--font-size-n);
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    background: var(--background-color);
    position: relative;
}
* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box
}
:before,
:after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box
}

/* scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    border-radius: 10px;
    box-shadow: inset 0 0 6px rgba(0, 0, 0, .1);
}
::-webkit-scrollbar-thumb {
    background-color: rgba(39, 57, 76, 0.6);
    border-radius: 10px;
    box-shadow:0 0 0 1px rgba(255, 255, 255, .3);
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    body {
        -webkit-text-size-adjust: 100%;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
    }
}

/* link
---------------------------------------------------*/
a {
    text-decoration: none;
}
a:link,
a:visited,
a:active {
    color: var(--main-color);
}
a:hover {
    color: var(--secondary-color);
}
a,
.hover {
    -moz-transition: opacity 0.5s;
    -webkit-transition: opacity 0.5s;
    -o-transition: opacity 0.5s;
    -ms-transition: opacity 0.5s;
    transition: opacity 0.5s;
}
.hover:hover {
    opacity: 0.8;
    -moz-opacity: 0.8;
    filter: alpha(opacity=80);
    -moz-transition: all 0.5s;
    -webkit-transition: all 0.5s;
    -o-transition: all 0.5s;
    -ms-transition: all 0.5s;
    transition: all 0.5s;
}
a.u {
    text-decoration: underline;
}

/* svg
---------------------------------------------------*/
svg {
    fill: #000;
}

/* wrapper
---------------------------------------------------*/
#wrapper {
    position: relative;
}
#main-wrapper {
    max-width: 800px;
    letter-spacing: 0.1em;
    margin: 0 auto;
}
/* contents-wrap */
.contents-wrap {
    position: relative;
    width: 96%;
    max-width: 800px;
    margin: 0 auto;
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    .contents-wrap {
        width: 93.75vw;
    }
}

/* entry
---------------------------------------------------*/
#entry {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    text-align: center;
    background-color: rgba(0,0,0,0.6);
    padding: var(--length-10);
}
#entry img {
    max-width: 600px;
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    #entry img {
        max-width: none;
        width: 93.75vw;
    }
}

/* mv
---------------------------------------------------*/
#mv .inner {
    position: relative;
}
#mv .inner .figures,
#mv .inner .figures .figure,
#mv .inner .figures .figure img {
    width: 100%;
}
#mv .inner .logo {
    position: absolute;
    top: 380px;
    left: 50%;
    transform: translate(-50%, 0);
    width: 42.75%;
}
#mv .inner .logo img {
    width: 100%;
    filter: drop-shadow(0 3px 6px rgba(0,0,0,0.4));
}

/* 768px */
@media screen and (min-width: 1px) and (max-width: 768px) {
    #mv .inner .logo {
        top: 73.4375vw;
        width: 53.125vw;
    }
}

/* intro
---------------------------------------------------*/
#intro,
#intro img {
    width: 100%;
}

/* safety
---------------------------------------------------*/
#safety,
#safety img {
    width: 100%;
}

/* howto
---------------------------------------------------*/
#howto {
    width: 100%;
    margin-bottom: var(--length-60);
}
#howto .ttl-section {
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-l);
    font-weight: bold;
    background-color: var(--primary-color);
    padding: 1em;
    margin-bottom: var(--length-40);
}
#howto .ttl-block {
    text-align: center;
    margin-bottom: var(--length-40);
}
#howto .ttl-block span {
    display: inline-block;
    color: var(--white-color);
    font-size: var(--font-size-l);
    font-weight: bold;
    background-color: var(--primary-color);
    border-radius: var(--length-20);
    padding: 0.5em 2em;
}
#howto .step {
    position: relative;
    background-color: var(--white-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--length-10);
}
#howto .step:not(:last-of-type) {
    margin-bottom: calc(var(--length-100) + var(--length-20));
}
#howto .step:not(:last-of-type)::after {
    position: absolute;
    content: '';
    top: calc(100% + var(--length-20));
    left: 50%;
    transform: translate(-50%, 0);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: var(--length-60) var(--length-100) 0 var(--length-100);
    border-color: var(--primary-color) transparent transparent transparent;
}
#howto .step .ttl-step {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-m);
    font-weight: bold;
    border-radius: var(--length-10);
    background-color: var(--primary-color);
    padding: 0.5em;
    overflow: hidden;
}
#howto .step .figure {
    text-align: center;
    padding: var(--length-60) var(--length-20) var(--length-40);
}
#howto .step .explain {
    border: 2px solid var(--length-10);
    border-bottom-left-radius: var(--length-5);
    border-bottom-right-radius: var(--length-5);
    background-color: var(--primary-color);
    padding: var(--length-20);
    overflow: hidden;
}
#howto .step .explain p {
    line-height: 1.4em;
    color: var(--white-color);
    font-size: var(--font-size-n);
}
#howto .step .explain span {
    color: var(--orange-color);
    font-weight: bold;
}

/* appeal
---------------------------------------------------*/
#appeal {
    width: 100%;
    text-align: center;
    background-color: var(--primary-color);
    padding: var(--length-60) var(--length-20) var(--length-200);
}
#appeal .copy {
    text-align: center;
    color: var(--white-color);
    font-size: var(--font-size-s);
    margin-top: var(--length-40);
}