* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box
}

html,
body {
    margin: 0;
    padding: 0
}

body {
    background-color: #fafafa;
    font-family: Microsoft Yahei, 微软雅黑, 宋体, sans-serif;
    line-height: 1.3;
    -webkit-font-smoothing: antialiased;
    -webkit-text-size-adjust: none;
    text-size-adjust: none
}

a {
    text-decoration: none
}

p {
    font-weight: 500;
    margin: 0;
    color: #333
}

img {
    max-width: 100%;
    border: 0
}

a img {
    border: 0;
    outline: 0
}

ul {
    list-style: none;
    margin: 0;
    padding: 0
}

sup {
    font-size: 50%
}

@-webkit-keyframes header-anim {
    to {
        background-position: 400% 0
    }
}

@-moz-keyframes header-anim {
    to {
        background-position: 400% 0
    }
}

@keyframes header-anim {
    to {
        background-position: 400% 0
    }
}

.svgbox {
    position: absolute;
    margin-left: 50%;
    top: 25px;
    left: -50px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 4px solid #fff;
    -webkit-box-shadow: 0 0 30px rgba(255, 255, 255, .25), inset 0 0 30px rgba(255, 255, 255, .25);
    -moz-box-shadow: 0 0 30px rgba(255, 255, 255, .25), inset 0 0 30px rgba(255, 255, 255, .25);
    box-shadow: 0 0 30px rgba(255, 255, 255, .25), inset 0 0 30px rgba(255, 255, 255, .5);
    pointer-events: none
}

.svgbox svg {
    width: 100%;
    height: 100%
}

header.gradient {
    background-color: #7eb;
    background-image: -webkit-linear-gradient( right, #9cf 0%, #f9c 25%, #ec8 50%, #7eb 75%, #9cf 100%);
    background-image: -moz-linear-gradient( right, #9cf 0%, #f9c 25%, #ec8 50%, #7eb 75%, #9cf 100%);
    background-image: linear-gradient( to right, #9cf 0%, #f9c 25%, #ec8 50%, #7eb 75%, #9cf 100%);
    background-size: 400% 100%;
    -webkit-animation: header-anim 30s infinite linear;
    -moz-animation: header-anim 30s infinite linear;
    animation: header-anim 30s infinite linear
}

h1 {
    display: inline;
    color: #fff;
    font-size: 30px;
    font-weight: 700;
    padding: 0;
    text-shadow: 0 0 10px rgba(255, 255, 255, .5);
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    tap-highlight-color: transparent;
    -webkit-user-select: none;
    user-select: none
}

.title {
    text-align: center;
    margin-top: 140px
}

h2 {
    color: #333;
    font-size: 25px;
    font-weight: 700;
    line-height: 1;
    margin: 2px 0 12px;
    padding: 0
}

header {
    position: absolute;
    display: block;
    left: 0;
    top: 0;
    width: 100%;
    height: 400px;
    margin: 0
}

header p {
    display: none
}

.surface {
    position: absolute;
    top: 0;
    -webkit-tap-highlight-color: transparent;
    tap-highlight-color: transparent;
    -webkit-user-select: none;
    user-select: none
}

.surface.disabled {
    width: 100%;
    height: 200px;
    top: 200px;
    background-color: #fafafa
}

main {
    position: relative;
    display: block;
    margin: 200px 20px 40px;
    margin-left: calc(20px + env(safe-area-inset-left));
    margin-right: calc(20px + env(safe-area-inset-right))
}

main ul {
    max-width: 1080px;
    margin: 0 auto
}

main li {
    width: 25%;
    display: inline-block;
    text-align: center;
    vertical-align: top;
    margin: 15px 0
}

main li.item-snake {
    margin-left: 12.5%
}

main a {
    display: block;
    color: #333
}

main a .icon img {
    -webkit-box-shadow: 0 10px 35px 0 rgba(0, 0, 0, .2);
    -moz-box-shadow: 0 10px 35px 0 rgba(0, 0, 0, .2);
    box-shadow: 0 10px 35px 0 rgba(0, 0, 0, .2)
}

body:not(.mobile) main a:hover .icon img {
    -webkit-transform: translate3d(0, -4px, 0);
    -moz-transform: translate3d(0, -4px, 0);
    transform: translate3d(0, -4px, 0);
    -webkit-box-shadow: 0 15px 40px 0 rgba(0, 0, 0, .25);
    -moz-box-shadow: 0 15px 40px 0 rgba(0, 0, 0, .25);
    box-shadow: 0 15px 40px 0 rgba(0, 0, 0, .25)
}

body:not(.mobile) main a:active .icon img {
    -webkit-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
    -webkit-box-shadow: none;
    -moz-box-shadow: none;
    box-shadow: none
}

.icon {
    padding: 20px
}

.icon img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    border-radius: 20%;
    -ms-interpolation-mode: bicubic;
    -webkit-user-select: none;
    user-select: none;
    -webkit-transition: -webkit-transform 100ms ease-out, box-shadow 100ms ease-out;
    -moz-transition: -moz-transform 100ms ease-out, box-shadow 100ms ease-out;
    transition: transform 100ms ease-out, box-shadow 100ms ease-out;
    will-change: transform, box-shadow
}

.text {
    color: #333;
    width: 100%;
    padding: 8px 10px 5px
}

.text p {
    font-size: 16px;
    color: #777
}

.alt {
    color: #333;
    position: absolute;
    left: 0;
    padding: 60px 20px;
    width: 100%;
    text-align: center;
    font-size: 17px
}

.alt a {
    color: #07f
}

footer {
    background-color: #333;
    color: #ccc;
    width: 100%;
    font-weight: 500;
    padding: 20px 20px 120px;
    padding-left: calc(20px + env(safe-area-inset-left));
    padding-bottom: calc(120px + env(safe-area-inset-bottom));
    padding-right: calc(20px + env(safe-area-inset-right))
}

footer>div {
    max-width: 1080px;
    margin: 0 auto;
    padding: 15px
}

footer .twitter img {
    vertical-align: top;
    margin-top: 1px
}

footer .twitter span {
    margin-left: 2px
}

footer p,
footer label {
    color: #ccc;
    font-size: 16px
}

footer p {
    display: inline;
    float: left
}

footer ul {
    float: right;
    font-size: 16px
}

footer li {
    display: inline;
    margin-left: 15px
}

footer a {
    color: #ccc
}

body:not(.mobile) footer a:hover {
    color: #fff;
    text-decoration: underline;
    text-decoration-skip: ink
}

.mobile p,
.mobile footer,
.mobile footer input {
    font-weight: 400
}

@media(min-width:1401px) {
    .surface {
        top: 40px
    }
    .surface.disabled {
        height: 160px;
        top: 240px
    }
    .svgbox {
        top: 42px
    }
    .title {
        margin-top: 158px
    }
    main {
        margin-top: 272px;
        margin-bottom: 60px
    }
    main ul {
        max-width: 1264px
    }
    h1 {
        font-size: 34px
    }
    h2 {
        font-size: 28px
    }
    .text p {
        font-size: 17px
    }
    footer {
        padding: 25px 25px 140px;
        padding-left: calc(25px + env(safe-area-inset-left));
        padding-bottom: calc(140px + env(safe-area-inset-bottom));
        padding-right: calc(25px + env(safe-area-inset-right))
    }
    footer div {
        max-width: 1264px;
        padding: 25px
    }
    .icon {
        padding: 15px 30px
    }
    .text {
        padding: 16px 20px
    }
}

@media(max-width:1080px) {
    h2 {
        font-size: 24px
    }
    .text p {
        font-size: 16px
    }
}

@media(max-width:812px) {
    header {
        height: 370px
    }
    .surface {
        top: -30px
    }
    .surface.disabled {
        height: 200px;
        top: 170px
    }
    .svgbox {
        width: 80px;
        height: 80px;
        left: -40px;
        border-width: 3px
    }
    h1 {
        font-size: 24px
    }
    h2 {
        margin: 0 0 8px
    }
    .title {
        margin-top: 120px
    }
    main {
        margin: 170px 15px 35px
    }
    main ul {
        max-width: 600px
    }
    main li {
        width: 33.33333333%
    }
    main li.item-snake {
        margin-left: 0
    }
    main li.item-bouncy-balls {
        margin-left: 33.33333333%
    }
    main a .icon img {
        -webkit-box-shadow: 0 8px 20px 0 rgba(0, 0, 0, .2);
        -moz-box-shadow: 0 8px 20px 0 rgba(0, 0, 0, .2);
        box-shadow: 0 8px 20px 0 rgba(0, 0, 0, .2)
    }
    footer p,
    footer ul {
        font-size: 15px
    }
    footer .twitter img {
        margin-top: 0
    }
    footer .links span {
        display: none
    }
    .icon {
        padding: 15px
    }
    .text {
        padding-top: 6px
    }
}

@media(max-width:640px) {
    footer {
        text-align: center;
        padding: 15px 15px 25px;
        padding-left: calc(15px + env(safe-area-inset-left));
        padding-bottom: calc(25px + env(safe-area-inset-bottom));
        padding-right: calc(15px + env(safe-area-inset-right))
    }
    footer ul {
        clear: both;
        float: none;
        padding-top: 20px
    }
    footer li {
        margin: 0 10px 0 0
    }
    footer p {
        width: 100%
    }
}

@media(max-width:550px) {
    header {
        height: 170px
    }
    h2 {
        font-size: 22px
    }
    .surface {
        display: none
    }
    main {
        margin: 175px 15px 30px
    }
    main ul {
        max-width: 380px
    }
    main li {
        width: 50%;
        margin-bottom: 10px
    }
    main li.item-bouncy-balls {
        margin-left: 25%
    }
    .text {
        padding: 3px 5px 0
    }
    footer {
        padding-bottom: 50px;
        padding-bottom: calc(50px + env(safe-area-inset-bottom))
    }
    footer div {
        padding: 10px 5px
    }
    footer p,
    footer label,
    footer ul,
    .text p {
        font-size: 14px
    }
    footer .twitter img {
        margin-top: -1px
    }
    .text p {
        color: #777
    }
}

@media(max-width:320px) {
    h2 {
        font-size: 18px
    }
}

@media(prefers-color-scheme:dark) {
    body,
    .surface.disabled {
        background-color: #2e2e2e
    }
    footer {
        background-color: #1e1e1e
    }
    p,
    h2,
    .text {
        color: #fafafa
    }
    .text p {
        color: #999
    }
}