html {
    line-height: 1.15
}

h1 {
    font-size: 30px
}

h2 {
    font-size: 28px
}

h3 {
    font-size: 26px
}

h4 {
    font-size: 24px
}

h5 {
    font-size: 21px
}

h6 {
    font-size: 18px
}

hr {
    box-sizing: content-box;
    height: 0;
    overflow: visible
}

pre {
    font-family: monospace, monospace;
    font-size: 1em
}

a {
    background-color: transparent
}

abbr[title] {
    border-bottom: none;
    -webkit-text-decoration: underline;
    text-decoration: underline;
    -webkit-text-decoration: underline dotted;
    text-decoration: underline dotted
}

b, strong {
    font-weight: bolder
}

code, kbd, samp {
    font-family: monospace, monospace;
    font-size: 1em
}

small {
    font-size: 80%
}

sub, sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline
}

sub {
    bottom: -.25em
}

sup {
    top: -.5em
}

img {
    border-style: none
}

button, input, optgroup, select, textarea {
    font-family: inherit;
    font-size: 100%;
    line-height: 1.15;
    margin: 0
}

button, input {
    overflow: visible
}

button, select {
    text-transform: none
}

[type=button], [type=reset], [type=submit], button {
    -webkit-appearance: button
}

[type=button]::-moz-focus-inner, [type=reset]::-moz-focus-inner, [type=submit]::-moz-focus-inner, button::-moz-focus-inner {
    border-style: none;
    padding: 0
}

[type=button] -moz-focusring, [type=reset] -moz-focusring, [type=submit] -moz-focusring, button:-moz-focusring {
    outline: 1px dotted ButtonText
}

fieldset {
    padding: .35em .75em .625em
}

legend {
    box-sizing: border-box;
    color: inherit;
    display: table;
    max-width: 100%;
    padding: 0;
    white-space: normal
}

progress {
    vertical-align: baseline
}

textarea {
    overflow: auto
}

[type=checkbox], [type=radio] {
    box-sizing: border-box;
    padding: 0
}

[type=number]::-webkit-inner-spin-button, [type=number]::-webkit-outer-spin-button {
    height: auto
}

[type=search] {
    -webkit-appearance: textfield;
    outline-offset: -2px
}

[type=search]::-webkit-search-decoration {
    -webkit-appearance: none
}

::-webkit-file-upload-button {
    -webkit-appearance: button;
    font: inherit
}

details {
    display: block
}

summary {
    display: list-item
}

[hidden], template {
    display: none
}

*, :after, :before {
    box-sizing: border-box
}

body, html {
    height: 100%
}

html {
    font-size: 62.5%;
    -ms-text-size-adjust: 100%;
    -ms-overflow-style: scrollbar;
    -webkit-tap-highlight-color: transparent
}

body, html {
    -webkit-text-size-adjust: 100%
}

body {
    position: relative;
    background-color: #fff;
    font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, 微软雅黑, Arial, sans-serif;
    font-size: 1.4rem;
    line-height: 1.7;
    color: #403e3e;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%
}

body.darkmode {
    background: rgba(0, 0, 0, .6)
}

body.darkmode * {
    color: #f2f2f2
}

body.darkmode .article-entry code {
    background: #c7c7c7 !important;
    color: #c7254e !important
}

body.darkmode .archive-article-date, body.darkmode .archive-year-wrap .archive-year, body.darkmode .article-category .article-category-link, body.darkmode .article-date, body.darkmode .article-header .article-title, body.darkmode .article-tag-list:before, body.darkmode .category-list .category-list-item i, body.darkmode .category-list a:hover .category-list-item, body.darkmode .share-outer i, body.darkmode .tag-list > .tag-list-item:before, body.darkmode a.toc-link {
    color: #e6e6e6 !important
}

body.darkmode #reward .reward-p, body.darkmode #reward .reward-p i, body.darkmode .float_btns i, body.darkmode .local-search-input, body.darkmode .share-icons a i {
    color: #7a7a7a !important
}

body.darkmode .is-position-fixed {
    background-color: transparent
}

body.darkmode .v * {
    color: #555 !important
}

body.darkmode .article-tag-list .article-tag-list-link, body.darkmode .tag-list > .tag-list-item .tag-list-link {
    background: #e6e6e6 !important;
    color: #555 !important
}

body.darkmode #vcomments-box #vcomments {
    background-color: hsla(0, 0%, 100%, .1) !important
}

body.darkmode #vcomments-box #vcomments * {
    color: #f1f1f1 !important
}

body.darkmode .v .vbtn {
    background-color: transparent !important
}

body.darkmode .v .vlist .vcard .vhead .vsys {
    border: 1px solid #f1f1f1 !important;
    background-color: transparent !important
}

body.darkmode input::-webkit-input-placeholder {
    color: #ccc
}

body.darkmode input::-moz-input-placeholder {
    color: #ccc
}

body.darkmode input::-ms-input-placeholder {
    color: #ccc
}

body.darkmode .categories-box a {
    color: #f2f2f2
}

body.darkmode #friends_link .friends_li a {
    background-color: hsla(0, 0%, 100%, .15);
    color: #fff
}

a {
    color: #0681d0
}

a:hover {
    color: #19a1f8
}

a:active {
    color: #067bc6
}

a.disabled {
    color: #adb5bd
}

dir, menu, ul {
    margin: 0;
    padding: 0
}

img {
    max-width: 100%
}

button {
    outline: 0;
    cursor: pointer
}

.archive-article-date, .archive-year-wrap .archive-year, .article-category .article-category-link, .article-date {
    text-decoration: none;
    color: #5c6b72
}

.archive-article-date:hover, .archive-year-wrap .archive-year:hover, .article-category .article-category-link:hover, .article-date:hover {
    color: #5c6b72
}

.archive-article-inner {
    border-radius: 4px
}

.article-entry h1, .article-entry h2, .article-entry h3, .article-entry h4, .article-entry h5, .article-entry h6 {
    margin: 2.5rem 0 1.5rem
}

.article-entry hr {
    height: .1rem;
    background-color: #999;
    border: none;
    padding: 0;
    margin: 1.5rem 0
}

.article-entry strong {
    font-weight: 700
}

.article-entry cite, .article-entry em {
    font-style: italic
}

.article-entry sub, .article-entry sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline
}

.article-entry sup {
    top: -.5rem
}

.article-entry sub {
    bottom: -.25rem
}

.article-entry small {
    font-size: 85%
}

.article-entry abbr, .article-entry acronym {
    border-bottom: .1rem dotted #999
}

.article-entry dl, .article-entry ol, .article-entry ul {
    margin: 1.5rem 0 1.5rem 2rem
}

.article-entry blockquote, .article-entry p, .article-entry table {
    margin: 1.5rem 0
}

.article-entry img, .article-entry video {
    max-width: 100%;
    height: auto;
    display: block;
    margin: auto
}

.article-entry iframe {
    border: none
}

.article-entry table {
    width: 100%;
    max-width: 70rem;
    border: 1px solid #dedede;
    margin: 15px auto;
    border-collapse: collapse;
    empty-cells: show
}

.article-entry table td, .article-entry table th {
    border: 1px solid #dedede;
    padding: 5px 10px
}

.article-entry table th {
    font-weight: 700;
    text-align: center !important;
    background: rgba(158, 188, 226, .2);
    white-space: nowrap
}

.article-entry table td:first-child {
    white-space: nowrap
}

.article-entry blockquote {
    display: block;
    padding: 0 1.5rem;
    width: 100%;
    overflow: auto;
    border-left: .3rem solid #cce5ff;
    color: #5c6b72
}

.article-entry blockquote > :first-child {
    margin-top: 0
}

.article-entry blockquote > :last-child {
    margin-bottom: 0
}

.article-entry blockquote footer cite:before {
    content: "—";
    padding: 0 .5rem
}

#app {
    height: 100%;
    width: 100%;
    overflow: hidden
}

#app, .cover {
    position: relative
}

.cover {
    padding: 0;
    margin-bottom: 3rem;
    text-align: center
}

.cover .forkMe {
    position: absolute;
    z-index: 999;
    top: 0;
    right: 0
}

.content.anim, .sidebar.anim {
    transition: all .3s ease-in-out
}

.content {
    position: relative;
    z-index: 1;
    margin-left: 0;
    height: 100%;
    width: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch
}

.content.on {
    margin-left: 0 !important
}

.sidebar {
    position: fixed;
    z-index: 9;
    left: -8rem;
    bottom: 0;
    width: 8rem;
    height: 100%;
    background-color: rgba(0, 0, 0, .8)
}

.sidebar.on {
    left: 0
}

.navbar-toggle {
    position: absolute;
    top: 1.5rem;
    left: 9.5rem;
    border: none;
    height: 4rem;
    width: 4rem;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, .5);
    color: #fff;
    transition: all .3s ease-in-out;
    opacity: .5
}

.navbar-toggle:hover {
    opacity: 1
}

.navbar-toggle:before {
    content: "\ee09";
    font-family: remixicon;
    font-size: larger
}

.outer, .wrap {
    position: relative;
    width: 100%;
    padding-right: 1.5rem;
    padding-left: 1.5rem;
    margin: auto;
    min-height: calc(100% - 157px)
}

.outer:after, .outer:before, .wrap:after, .wrap:before {
    content: "";
    display: table;
    clear: both
}

.local-search {
    width: 100%
}

#main {
    position: relative
}

@media (min-width: 768px) {
    .cover {
        margin-bottom: 0;
        height: 100%
    }

    .outer, .wrap {
        width: 70rem;
        padding-right: 0;
        padding-left: 0
    }

    .local-search {
        width: 70rem
    }

    .content.on {
        transform: none
    }
}

@media (max-width: 768px) {
    .cover .forkMe {
        display: none
    }

    .content.on {
        margin-left: -1px !important
    }

    .sidebar {
        background-color: #403e3e
    }

    .navbar-toggle {
        transform: scale(1.1)
    }
}

.list-unstyled {
    list-style: none;
    padding-left: 0;
    margin-left: 0
}

.categories-box {
    max-width: 320px;
    margin-right: -.5rem;
    margin-left: -.5rem;
    border-left: 1px solid #eee
}

.categories-box span {
    padding-left: 5px;
    color: #aaa;
    font-size: 14px
}

.categories-box ol li, .categories-box ul li {
    list-style: none;
    margin: 15px 0;
    padding-left: 15px;
    padding-bottom: 12px;
    font-size: 16px;
    font-weight: 500;
    word-wrap: break-word;
    border-bottom: 1px solid #eee
}

.categories-box ol li:last-child, .categories-box ul li:last-child {
    margin-bottom: 0;
    border-bottom: 0 solid #000
}

.categories-box ol li i, .categories-box ul li i {
    font-style: normal;
    margin-left: 10px;
    color: #007cfc
}

.categories-box a {
    display: inline-block;
    vertical-align: middle;
    text-decoration: none;
    color: #403e3e
}

.categories-box a:hover {
    opacity: .8
}

.categories-box a:before {
    content: "\efde";
    font-family: remixicon;
    margin-right: .5rem;
    display: inline-block;
    vertical-align: middle
}

.categories-box ol ol, .categories-box ol ul, .categories-box ul ol, .categories-box ul ul {
    list-style: none;
    padding-left: 0;
    margin: 0 20px
}

.categories-box ol ol li, .categories-box ol ul li, .categories-box ul ol li, .categories-box ul ul li {
    list-style: none;
    padding-left: 0;
    margin-left: 0;
    border: none;
    padding-bottom: 0
}

.archive-list-count:before, .category-list-count:before, .tag-list-count:before {
    content: "("
}

.archive-list-count:after, .category-list-count:after, .tag-list-count:after {
    content: ")"
}

.tag-list {
    list-style: none;
    padding-left: 0;
    margin-right: -.5rem;
    margin-left: -.5rem
}

.tag-list > .tag-list-item {
    display: inline-block;
    padding: .5rem 1rem;
    font-size: 120%
}

.tag-list > .tag-list-item:before {
    content: "\eec3";
    font-family: remixicon;
    margin-right: .5rem;
    display: inline-block;
    vertical-align: middle;
    color: #5d5a5a
}

.tag-list > .tag-list-item .tag-list-link {
    display: inline-block;
    vertical-align: middle;
    text-decoration: none;
    height: 30px;
    line-height: 30px;
    padding: 0 15px;
    font-size: 1.5rem;
    border-radius: 15px;
    background-color: #5d5a5a;
    color: #fff;
    box-shadow: 0 3px 5px rgba(0, 0, 0, .12);
    transition: .2s
}

.tag-list > .tag-list-item .tag-list-link:hover {
    transform: scale(1.1)
}

.cover-frame {
    position: relative;
    min-width: 100%;
    height: 100vh
}

.cover-frame .bg-box {
    width: 100%;
    height: 100%
}

.cover-frame .bg-box > img {
    display: block;
    width: 100vw;
    height: 100vh;
    -o-object-fit: cover;
    object-fit: cover;
    -o-object-position: center center;
    object-position: center center
}

.cover-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -100%)
}

.cover-inner h1 {
    font-size: 7rem;
    margin: 0;
    opacity: .95
}

.cover-inner #subtitle-box, .cover-inner h1 {
    font-family: Titillium Web, PingFang SC, Hiragino Sans GB, Microsoft JhengHei, Microsoft YaHei, Helvetica Neue, Helvetica, Arial, sans-serif
}

.cover-inner #subtitle-box {
    font-size: 3rem;
    margin: .5rem 0 1.5rem
}

.cover-inner, .cover-inner a {
    color: #fff;
    text-decoration: none
}

.cover-inner img, .cover-inner video {
    position: relative
}

.cover-inner .cover-logo {
    width: 6rem
}

.cover-learn-more {
    position: absolute;
    z-index: 1;
    bottom: 10px;
    left: 0;
    width: 100%
}

.cover-learn-more a > i {
    font-size: 3rem;
    color: #fff;
    -webkit-animation: down 1s linear infinite;
    animation: down 1s linear infinite
}

.cover-learn-more a > i:hover {
    color: #1e3e3f
}

.float_btns {
    position: sticky;
    bottom: 10rem;
    right: 50px;
    z-index: 9996;
    text-align: center;
    transform: scale(1.2);
    width: 50px;
    float: right
}

#mask {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .8);
    z-index: 9998;
    display: none
}

.word_count {
    margin-top: 5px;
    color: #717f8c;
    padding-bottom: 1rem;
    border-bottom: 1px solid #efefef
}

@media (max-width: 768px) {
    .cover-inner {
        transform: translate(-50%, -70%);
        width: 100%
    }

    .cover-inner h1 {
        font-size: 4.5rem
    }

    .cover-inner #subtitle-box {
        font-size: 2rem
    }

    .float_btns {
        right: 10px
    }
}

@-webkit-keyframes down {
    0% {
        margin-bottom: 0;
        opacity: 1
    }
    to {
        margin-bottom: -15px;
        opacity: .1
    }
}

@keyframes down {
    0% {
        margin-bottom: 0;
        opacity: 1
    }
    to {
        margin-bottom: -15px;
        opacity: .1
    }
}

.search-form-wrap {
    width: 100%;
    position: fixed;
    top: -100%;
    right: 8rem;
    left: 0;
    opacity: 0;
    transition: .3s
}

.search-form-wrap.on {
    top: 0;
    opacity: 1
}

.local-search {
    position: relative;
    margin: 0 auto;
    padding: 1rem 3rem;
    background-color: rgba(64, 62, 62, .9);
    box-shadow: 0 1rem 3rem rgba(30, 62, 63, .05);
    max-height: 100vh;
    overflow-y: auto
}

.local-search-input {
    font-size: 120%;
    border: 0;
    border-radius: .4rem;
    width: 100%;
    padding: 1rem 1.5rem;
    outline: none
}

.local-search-input::-webkit-search-cancel-button, .local-search-input::-webkit-search-results-decoration {
    -webkit-appearance: none
}

.local-search-close {
    position: absolute;
    top: 1.85rem;
    right: 4.25rem;
    display: block;
    height: 2rem;
    width: 2rem;
    padding: 0;
    border: none;
    border-radius: 50%;
    color: #fff;
    text-align: center;
    cursor: pointer
}

.local-search-close:before {
    font-size: 150%;
    content: "\eb52";
    font-family: remixicon
}

.local-search-result {
    text-align: left
}

.search-result-list {
    list-style: none;
    padding-left: 0;
    margin-left: 0
}

.search-result-list li {
    padding: 1.5rem 0
}

.search-result-list li:not(:last-child) {
    border-bottom: .1rem solid #999
}

.search-result-list li .search-result-title {
    font-size: 1.6rem;
    font-weight: 700
}

.search-result-list li .search-result {
    color: #fff;
    padding-top: .5rem;
    margin: 0;
    max-height: 12rem;
    overflow: hidden
}

.search-result-list li em.search-keyword {
    font-style: normal;
    color: #0681d0
}

.search-result-empty {
    padding: 2.6rem 0 0;
    color: #fff
}

.search-result-empty p {
    text-align: center
}

.article {
    padding: 5rem 0 3rem;
    font-size: 110%
}

.article .sea-center {
    text-align: center;
    color: #000
}

.article .sea-center:after {
    border-bottom: 2px dashed #cce5ff;
    content: "";
    width: 100px;
    display: block;
    margin: .2em auto 0;
    height: 2px
}

.article-topping {
    display: inline-block;
    margin-left: 10px;
    padding: 0 10px;
    border-radius: 4px;
    font-style: normal;
    font-size: 12px;
    background-color: #ea434a;
    color: #fff;
    height: 22px;
    line-height: 24px;
    transform: translateY(-8px)
}

.article-meta:after, .article-meta:before {
    content: "";
    display: table;
    clear: both
}

.article-date:before {
    content: "\eaf2";
    margin-right: .15rem;
    font-family: remixicon;
    opacity: .5
}

.article-category {
    display: inline-block;
    margin-left: 1.5rem
}

.article-category:before {
    content: "\efde";
    font-family: remixicon;
    margin-right: .15rem;
    opacity: .6
}

.archive-article-header + .article-category {
    margin-left: 0
}

.article-entry {
    font-size: 103%;
    margin-top: .5rem;
    line-height: 1.6;
    color: #403e3e
}

.article-entry:after, .article-entry:before {
    content: "";
    display: table;
    clear: both
}

.article-entry .pullquote {
    text-align: left;
    width: 45%;
    margin: 0
}

.article-entry .pullquote.left {
    margin-left: .5em;
    margin-right: 1em
}

.article-entry .pullquote.right {
    margin-right: .5em;
    margin-left: 1em
}

.article-entry .caption {
    color: #999;
    display: block;
    font-size: .9em;
    margin-top: .5em;
    position: relative;
    text-align: center
}

.article-entry .video-container {
    position: relative;
    padding-top: 56.25%;
    height: 0;
    overflow: hidden
}

.article-entry .video-container embed, .article-entry .video-container iframe, .article-entry .video-container object {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin-top: 0
}

.article-header {
    position: relative
}

.article-header h1, .article-header h2 {
    margin: 0
}

.article-header .article-title {
    font-size: 34px;
    font-weight: 700;
    border-left: 4px solid #403e3e
}

.article-header .article-author, .article-header .article-title {
    display: block;
    margin-bottom: 3rem;
    text-decoration: none;
    color: #403e3e;
    padding-left: 2rem
}

.article-header .article-author {
    font-size: 20px
}

.article-footer:after, .article-footer:before {
    content: "";
    display: table;
    clear: both
}

.declare {
    margin: 0 0 1rem;
    padding-bottom: 1rem;
    color: #999;
    border-bottom: 1px solid #f6f6f6
}

.declare ul, .declare ul li {
    list-style: none
}

.article-tag-list {
    list-style: none;
    padding-left: 0;
    margin: 0
}

.article-tag-list:before {
    color: #5d5a5a;
    content: "\eec3";
    font-family: remixicon;
    margin-right: .5rem
}

.article-tag-list .article-tag-list-item {
    display: inline-block;
    padding-right: 1rem
}

.article-tag-list .article-tag-list-link {
    font-size: 11px;
    text-decoration: none;
    display: block;
    color: #fff;
    float: left;
    height: 18px;
    line-height: 18px;
    padding: 0 8px;
    position: relative;
    border-radius: 9px;
    background-color: #5d5a5a
}

.article-comment-link {
    float: right
}

.article-comment-link:before {
    content: "\ee0d";
    font-family: remixicon;
    padding-right: 8px
}

.article-share-link {
    cursor: pointer;
    float: right;
    margin-left: 20px
}

.article-share-link:before {
    content: "\ef76";
    font-family: remixicon;
    padding-right: 6px
}

.article-nav {
    position: relative;
    padding-top: 1.5rem;
    margin: 1rem 0 2rem;
    border-top: .1rem solid #eee
}

.article-nav:after, .article-nav:before {
    content: "";
    display: table;
    clear: both
}

.article-nav-link {
    display: block;
    text-decoration: none
}

.article-nav-link:first-child {
    float: left
}

.article-nav-link:last-child {
    float: right;
    text-align: right
}

.article-nav-caption {
    color: #5c6b72
}

.article-nav-title {
    font-size: inherit
}

.article-share-box {
    position: absolute;
    display: none;
    background: #fff;
    border-radius: .4rem;
    box-shadow: 1px 2px 10px rgba(0, 0, 0, .2);
    border-radius: 3px;
    margin-left: -145px;
    overflow: hidden;
    z-index: 1
}

.article-share-box.on {
    display: block
}

.article-share-input {
    width: 100%;
    background: none;
    box-sizing: border-box;
    padding: 0 1.5rem;
    outline: none;
    border: none;
    border-bottom: .1rem solid #999;
    height: 3.6rem;
    line-height: 3.6rem
}

.article-share-links:after, .article-share-links:before {
    content: "";
    display: table;
    clear: both
}

.article-share-facebook, .article-share-google, .article-share-pinterest, .article-share-twitter {
    position: relative;
    display: block;
    float: left;
    width: 5rem;
    height: 3.6rem;
    color: #403e3e;
    text-align: center;
    text-decoration: none
}

.article-share-facebook:before, .article-share-google:before, .article-share-pinterest:before, .article-share-twitter:before {
    font-size: 20px;
    font-family: remixicon
}

.article-share-facebook:hover, .article-share-google:hover, .article-share-pinterest:hover, .article-share-twitter:hover {
    color: #fff
}

.article-share-twitter:before {
    content: "\f068"
}

.article-share-twitter:hover {
    background: #00aced;
    text-shadow: 0 1px #008abe
}

.article-share-facebook:before {
    content: "\ec30"
}

.article-share-facebook:hover {
    background: #3b5998;
    text-shadow: 0 1px #2f477a
}

.article-share-pinterest:before {
    content: "\eea8"
}

.article-share-pinterest:hover {
    background: #cb2027;
    text-shadow: 0 1px #a21a1f
}

.article-share-google:before {
    content: "\ed15"
}

.article-share-google:hover {
    background: #dd4b39;
    text-shadow: 0 1px #be3221
}

.pswp__caption__center {
    text-align: center !important
}

.tocbot {
    padding: 20px;
    position: absolute;
    right: -28rem;
    top: 14rem;
    font-size: 80%;
    opacity: .95;
    max-width: 255px;
    border-radius: 8px
}

.tocbot > .toc-list {
    position: relative;
    overflow-x: hidden;
    overflow-y: scroll;
    max-height: 70vh
}

.tocbot > .toc-list::-webkit-scrollbar {
    width: 4px
}

> .toc-list::-webkit-scrollbar-thumb {
    border-radius: 10px;
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, .2);
    background: rgba(0, 0, 0, .2)
}

> .toc-list::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, .2);
    border-radius: 0;
    background: rgba(0, 0, 0, .1)
}

.toc-list {
    list-style: none;
    margin-left: 0;
    padding-left: 1rem
}

a.toc-link {
    height: 100%;
    color: #172d3e;
    text-decoration: none;
    font-size: 115%
}

.is-collapsible {
    max-height: 1000px;
    overflow: hidden;
    transition: all
}

.is-collapsed {
    max-height: 0
}

.is-position-fixed {
    position: fixed !important;
    top: 0;
    right: 6rem;
    background-color: #fff;
    z-index: 996
}

.toc-link:before {
    background-color: #cce5ff;
    content: " ";
    display: inline-block;
    height: inherit;
    left: 0;
    margin-top: -1px;
    position: absolute;
    width: 2px
}

.is-active-link:before {
    background-color: #3d85c6
}

.is-active-link {
    font-weight: 700
}

.article-gallery {
    position: relative
}

.article-gallery-photos {
    position: relative;
    overflow: hidden
}

.article-gallery-img {
    display: none;
    max-width: 100%
}

.article-gallery-img:first-child {
    display: block
}

.article-gallery-img.loaded {
    position: absolute;
    display: block
}

.article-gallery-img img {
    display: block;
    max-width: 100%;
    margin: 0 auto
}

.article-albums {
    position: relative
}

.article-albums-photos {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding-left: 0;
    margin-left: 0
}

.article-albums-photos:after, .article-albums-photos:before {
    content: "";
    display: table;
    clear: both
}

.article-albums-photos:after {
    content: "";
    flex-grow: 999999999
}

.article-albums-photos .article-albums-item {
    position: relative;
    flex-grow: 1;
    margin: .5rem;
    overflow: hidden
}

.article-albums-photos .article-albums-item img {
    -o-object-fit: cover;
    object-fit: cover;
    max-width: 100%;
    min-width: 100%;
    vertical-align: center
}

.article-albums-photos .article-albums-item .article-albums-caption {
    display: block;
    width: 100%;
    padding: 1rem 0;
    text-align: center
}

@media (min-width: 576px) {
    .article-albums-item img {
        height: 32rem
    }

    .article-albums-item .article-albums-caption {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, .5);
        background: linear-gradient(0deg, rgba(0, 0, 0, .5), transparent);
        color: #fff;
        padding: 1rem;
        opacity: 0;
        transform: translateY(100%);
        transition: all .3s ease-in-out
    }

    .article-albums-item:hover .article-albums-caption {
        opacity: 1;
        transform: translateY(0)
    }
}

@media (min-width: 768px) {
    .article-albums-item img {
        height: 20rem
    }
}

.justified-gallery {
    width: 100%;
    position: relative;
    overflow: hidden
}

.justified-gallery > a, .justified-gallery > div, .justified-gallery > figure {
    position: absolute;
    display: inline-block;
    overflow: hidden;
    background: #adb5bd;
    opacity: 1;
    margin: 0;
    padding: 0
}

.justified-gallery > a > a > img, .justified-gallery > a > a > svg, .justified-gallery > a > img, .justified-gallery > a > svg, .justified-gallery > div > a > img, .justified-gallery > div > a > svg, .justified-gallery > div > img, .justified-gallery > div > svg, .justified-gallery > figure > a > img, .justified-gallery > figure > a > svg, .justified-gallery > figure > img, .justified-gallery > figure > svg {
    position: absolute;
    top: 50%;
    left: 50%;
    margin: 0;
    padding: 0;
    border: none;
    opacity: 1
}

.justified-gallery > a > .caption, .justified-gallery > div > .caption, .justified-gallery > figure > .caption {
    display: none;
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 1rem;
    background-color: rgba(0, 0, 0, .5);
    background: linear-gradient(0deg, rgba(0, 0, 0, .5), transparent);
    color: #fff
}

.justified-gallery > a > .caption.caption-visible, .justified-gallery > div > .caption.caption-visible, .justified-gallery > figure > .caption.caption-visible {
    display: initial
}

.justified-gallery > .jg-entry-visible {
    opacity: 1;
    background: none
}

.justified-gallery > .jg-entry-visible > a > img, .justified-gallery > .jg-entry-visible > a > svg, .justified-gallery > .jg-entry-visible > img, .justified-gallery > .jg-entry-visible > svg {
    opacity: 1;
    transition: opacity
}

.justified-gallery > .jg-filtered {
    display: none
}

.justified-gallery > .jg-filtered > .spinner {
    position: absolute;
    bottom: 0;
    margin-left: -24px;
    padding: 10px 0;
    left: 50%;
    opacity: 1;
    overflow: initial
}

.justified-gallery > .jg-filtered > span {
    display: inline-block;
    opacity: 1;
    width: 8px;
    height: 8px;
    margin: 0 4px;
    background-color: #000;
    border-radius: 6px
}

.articles .article {
    padding: 4.5rem 0
}

.articles .article:not(:last-child) {
    border-bottom: .1rem solid #ddd
}

.articles .article-entry {
    margin-top: 1rem;
    padding: 0 2rem 2rem;
    border: 1px dashed #dfdede
}

.articles .article-entry .article-more-link {
    display: inline-block;
    float: right;
    background-color: #403e3e;
    padding: .5rem 1rem;
    border-radius: 4px;
    color: #fff !important;
    text-decoration: none
}

.articles .article-entry .article-gallery {
    margin-top: 1.5rem
}

.articles .article-footer {
    margin-top: 1rem
}

.archives-wrap {
    position: relative
}

.archives-wrap:after, .archives-wrap:before {
    content: "";
    display: table;
    clear: both
}

.archives-wrap:first-child {
    margin-top: 3rem
}

.archives-wrap:last-child {
    margin-bottom: 3rem
}

.archive-year-wrap {
    position: absolute;
    top: 0;
    left: 0;
    width: 6rem
}

.archive-year-wrap .archive-year {
    position: relative;
    display: inline-block
}

.archive-year-wrap .archive-year:after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    height: .15rem;
    background-color: #5c6b72;
    width: 100%
}

.archives {
    margin-left: 6rem;
    border-left: .1rem dashed #999;
    padding-left: 3rem
}

.archives:after, .archives:before {
    content: "";
    display: table;
    clear: both
}

.archive-article-inner {
    margin-bottom: 1.5rem
}

.archive-article-header {
    display: table-row
}

.archive-article-header > a, .archive-article-header > h2 {
    display: table-cell
}

.archive-article-header h2 {
    margin: 0;
    padding-left: 3rem
}

.archive-article-header h2 .archive-article-title {
    text-decoration: none;
    font-size: 1.8rem
}

.archive-article-footer {
    margin-top: 1.5rem
}

.archive-article-date {
    position: relative;
    display: block
}

.archive-article-date:before {
    content: "";
    position: absolute;
    top: 50%;
    left: -3.5rem;
    margin-top: -.5rem;
    width: 1rem;
    height: 1rem;
    border-radius: 1rem;
    background-color: #999
}

.page-type-title {
    margin: 0;
    padding: 3rem 0
}

.page-nav {
    margin: 3rem auto 5rem;
    text-align: center;
    overflow: hidden;
    font-size: 115%
}

.page-nav:after, .page-nav:before {
    content: "";
    display: table;
    clear: both
}

.page-nav a, .page-nav span {
    padding: 1rem 1.5rem;
    line-height: 1
}

.page-nav a {
    text-decoration: none
}

.page-nav .prev {
    float: left
}

.page-nav .next, .page-nav .prev {
    border-radius: 6px;
    border: 1px solid
}

.page-nav .next {
    float: right
}

.page-nav .page-number {
    display: inline-block
}

@media mq-mobile {
    .page-nav .page-number {
        display: none
    }
}

.page-nav .current {
    font-weight: 700
}

.page-nav .space {
    color: #999
}

.footer {
    border-top: 2px solid #f6f6f6;
    padding: 3rem 0;
    font-size: 115%
}

.footer .outer > ul {
    position: relative;
    display: flex;
    justify-content: center
}

.footer .outer > ul li {
    display: inline-block;
    padding: .3rem 0
}

.footer .outer > ul li a {
    text-decoration: none
}

.footer .outer > ul li .division {
    display: inline;
    margin: 0 5px
}

.footer .outer > ul li i {
    margin: 0 2px;
    font-style: normal;
    transform: translateY(2px)
}

.footer .outer > ul span {
    margin-right: 6px
}

.heart_icon {
    display: inline-block;
    margin: 0 .4rem;
    font-size: 1em;
    color: red;
    -webkit-animation: footerHeartBeat 1.2s infinite;
    animation: footerHeartBeat 1.2s infinite;
    -webkit-animation-duration: 1.2s;
    animation-duration: 1.2s;
    -webkit-animation-timing-function: ease;
    animation-timing-function: ease;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    -webkit-animation-direction: normal;
    animation-direction: normal;
    -webkit-animation-fill-mode: none;
    animation-fill-mode: none;
    -webkit-animation-play-state: running;
    animation-play-state: running;
    -webkit-animation-name: footerHeartBeat;
    animation-name: footerHeartBeat
}

@-webkit-keyframes footerHeartBeat {
    0% {
        transform: scale(1)
    }
    50% {
        transform: scale(1.2)
    }
    to {
        transform: scale(1)
    }
}

@keyframes footerHeartBeat {
    0% {
        transform: scale(1)
    }
    50% {
        transform: scale(1.2)
    }
    to {
        transform: scale(1)
    }
}

.float-left {
    float: left !important
}

.float-right {
    float: right !important
}

.float-none {
    float: none !important
}

.article-entry .highlight, .article-entry pre {
    background: #2d2d2d;
    margin: 10px 0;
    padding: 10px;
    overflow: hidden;
    overflow-x: auto;
    color: #dedede;
    font-size: .9em;
    line-height: 1.5
}

.article-entry .highlight::-webkit-scrollbar, .article-entry pre::-webkit-scrollbar {
    height: 10px;
    width: 7px;
    background: rgba(0, 0, 0, .1)
}

.article-entry .highlight::-webkit-scrollbar:hover, .article-entry pre::-webkit-scrollbar:hover {
    background: rgba(0, 0, 0, .2)
}

.article-entry .highlight::-webkit-scrollbar-thumb, .article-entry pre::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, .3);
    border-radius: 6px
}

.article-entry .highlight::-webkit-scrollbar-thumb:hover, .article-entry pre::-webkit-scrollbar-thumb:hover {
    -ms-box-shadow: inset 1px 1px 1px rgba(0, 0, 0, .25);
    -o-box-shadow: inset 1px 1px 1px rgba(0, 0, 0, .25);
    box-shadow: inset 1px 1px 1px rgba(0, 0, 0, .25);
    background-color: rgba(0, 0, 0, .4)
}

.article-entry .highlight::-webkit-scrollbar-track, .article-entry pre::-webkit-scrollbar-track {
    background: #ededed;
    border-radius: 10px
}

.article-entry .gist .gist-file .gist-data .line-numbers, .article-entry .highlight .gutter pre, .article-entry .highlight .gutter pre .line {
    color: grey
}

.article-entry code, .article-entry pre {
    font-family: Consolas, Monaco, Andale Mono, Ubuntu Mono, monospace
}

.article-entry code {
    background: #eee;
    color: #c7254e;
    padding: 0 .3em;
    border: none
}

.article-entry pre code {
    background: none;
    text-shadow: none;
    padding: 0;
    color: #dedede
}

.article-entry .highlight {
    border-radius: 4px
}

.article-entry .highlight pre {
    border: none;
    margin: 0;
    padding: 0
}

.article-entry .highlight table {
    margin: 0;
    width: auto;
    border: none
}

.article-entry .highlight td {
    border: none;
    padding: 0
}

.article-entry .highlight figcaption {
    color: #8e908c;
    line-height: 1em;
    margin-bottom: 1em
}

.article-entry .highlight figcaption:after, .article-entry .highlight figcaption:before {
    content: "";
    display: table
}

.article-entry .highlight figcaption:after {
    clear: both
}

.article-entry .highlight figcaption a {
    float: right
}

.article-entry .highlight .gutter pre {
    text-align: right;
    padding-right: 20px
}

.article-entry .highlight .gutter pre .line {
    text-shadow: none
}

.article-entry .highlight .line {
    color: #dedede;
    min-height: 19px
}

.article-entry .gist {
    margin: 0 -20px;
    border-color: #ddd;
    border-style: solid;
    border-width: 1px 0;
    background: #272822;
    padding: 15px 20px 15px 0
}

.article-entry .gist .gist-file {
    border: none;
    font-family: Source Code Pro, Consolas, Monaco, Menlo, monospace;
    margin: 0
}

.article-entry .gist .gist-file .gist-data {
    background: none;
    border: none
}

.article-entry .gist .gist-file .gist-data .line-numbers {
    background: none;
    border: none;
    padding: 0 20px 0 0
}

.article-entry .gist .gist-file .gist-data .line-data {
    padding: 0 !important
}

.article-entry .gist .gist-file .highlight {
    margin: 0;
    padding: 0;
    border: none
}

.article-entry .gist .gist-file .gist-meta {
    background: #272822;
    color: #8e908c;
    font: .85em Helvetica Neue, Helvetica, Arial, sans-serif;
    text-shadow: 0 0;
    padding: 0;
    margin-top: 1em;
    margin-left: 20px
}

.article-entry .gist .gist-file .gist-meta a {
    color: #258fb8;
    font-weight: 400
}

.article-entry .gist .gist-file .gist-meta a:hover {
    text-decoration: underline
}

pre .comment {
    color: #9c9
}

pre .class .params, pre .function .keyword, pre .keyword {
    color: #66d9ef
}

pre .css .value, pre .doctype, pre .function, pre .params, pre .tag {
    color: #dedede
}

pre .at_rule, pre .at_rule .keyword, pre .css ~ * .tag, pre .preprocessor, pre .preprocessor .keyword, pre .title {
    color: #f92672
}

pre .attribute, pre .built_in, pre .class, pre .css ~ * .class, pre .function .title {
    color: #a6e22e
}

pre .string, pre .value {
    color: #dedede
}

pre .number {
    color: #c9c
}

pre .css ~ * .id, pre .id {
    color: #fd971f
}

.pace {
    -webkit-pointer-events: none;
    pointer-events: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none
}

.pace .pace-progress {
    position: fixed;
    z-index: 2000;
    top: 0;
    right: 100%;
    width: 100%;
    height: .2rem;
    background-color: #3d85c6
}

.pace-inactive {
    display: none
}

@media (max-width: 768px) {
    .pace {
        display: none
    }
}

.gitalk, .markdown-body {
    font-size: 1.4rem !important
}

.gt-container .gt-avatar.gt-comment-avatar img {
    border-radius: 50%
}

.macbook {
    position: relative
}

.macbook .macbook-screen {
    position: relative;
    background-color: transparent;
    border-radius: 1rem;
    border: 1.25rem solid #fff;
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, .15), inset 0 0 .5rem rgba(0, 0, 0, .15)
}

.macbook .macbook-keyboard {
    display: none;
    position: relative;
    box-sizing: content-box;
    background-color: #fff;
    border-bottom: .75rem solid #f2f2f2;
    border-bottom-left-radius: 50%;
    border-bottom-right-radius: 50%;
    margin: -.5rem -5rem 0;
    height: .5rem;
    box-shadow: 0 .5rem 3rem rgba(0, 0, 0, .15)
}

.macbook .macbook-keyboard:before {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, #f2f2f2, #fff, #f2f2f2);
    box-shadow: inset 0 0 .1rem rgba(0, 0, 0, .05);
    width: 20%;
    height: .3rem;
    border-radius: .125rem
}

@media (min-width: 768px) {
    .macbook .macbook-screen {
        border-width: 2rem 1.25rem 1.25rem
    }

    .macbook .macbook-keyboard {
        display: block
    }
}

.macbook-wrap {
    padding: 1rem 9rem
}

.scrolling-wrap {
    min-height: 30rem;
    overflow: hidden
}

.scrolling {
    position: absolute;
    top: 30rem;
    width: 100%;
    -webkit-animation: scrolling-animation 10s ease-in-out 1s infinite;
    animation: scrolling-animation 10s ease-in-out 1s infinite
}

@-webkit-keyframes scrolling-animation {
    0% {
        top: 0
    }
    10% {
        top: 0;
        transform: translateY(0)
    }
    30% {
        transform: translateY(-35%)
    }
    60% {
        transform: translateY(-75%)
    }
    90% {
        transform: translateY(-100%)
    }
    to {
        transform: translateY(-100%)
    }
}

@keyframes scrolling-animation {
    0% {
        top: 0
    }
    10% {
        top: 0;
        transform: translateY(0)
    }
    30% {
        transform: translateY(-35%)
    }
    60% {
        transform: translateY(-75%)
    }
    90% {
        transform: translateY(-100%)
    }
    to {
        transform: translateY(-100%)
    }
}

#reward-out {
    position: relative;
    width: 100%
}

#reward-btn {
    position: relative;
    display: inline-block;
    height: 36px;
    line-height: 36px;
    padding: 0 20px;
    font-size: 18px;
    color: #fff;
    background: #403e3e;
    text-decoration: none;
    border-radius: 4px;
    margin: 60px 0 60px 50%;
    transform: translateX(-50%);
    box-shadow: 0 2px 5px 0 rgba(0, 0, 0, .16), 0 2px 10px 0 rgba(0, 0, 0, .12);
    transition: .4s ease-in-out;
    cursor: pointer
}

#reward-btn:active, #reward-btn:hover {
    box-shadow: 0 6px 12px rgba(0, 0, 0, .2), 0 4px 15px rgba(0, 0, 0, .2)
}

#reward {
    position: absolute;
    z-index: 9999;
    left: 50%;
    top: 20%;
    transform: translateX(-50%);
    margin: 60px 0;
    padding: 0 20px 20px;
    background-color: #dbedff;
    display: none
}

#reward.ready {
    visibility: hidden;
    display: block;
    transform: translate(-50%, -100%);
    transition: .3s
}

#reward.in {
    visibility: visible;
    opacity: 1;
    transform: translate(-50%)
}

#reward .close {
    height: 28px;
    line-height: 28px;
    width: 28px;
    display: block;
    text-align: center;
    position: absolute;
    right: -12px;
    top: -10px;
    border-radius: 50%;
    background-color: #403e3e;
    cursor: pointer
}

#reward .close i {
    font-size: 20px;
    color: #fff
}

#reward .reward-p {
    color: #403e3e;
    font-weight: 700;
    font-size: 20px;
    text-align: center;
    text-shadow: 1px 1px 1px #70b6ff
}

#reward .reward-p i {
    margin: 0 10px;
    transform: translateY(2px)
}

#reward .reward-box {
    display: flex;
    justify-content: space-between;
    width: 100%
}

#reward .reward-box .reward-item {
    text-align: center;
    margin: 0 10px
}

#reward .reward-type {
    font-size: 16px;
    display: block;
    color: #000;
    margin-top: 10px
}

#reward .reward-img {
    display: block;
    width: 12rem;
    height: 12rem;
    border-radius: 3px
}

@media (max-width: 768px) {
    #reward {
        padding: 0 10px 10px
    }

    #reward .reward-img {
        max-width: 10rem;
        max-height: 10rem;
        margin: 0 5px
    }
}

.share-wrap {
    min-height: 20px;
    display: none;
    position: relative;
    z-index: 1;
    right: 0;
    bottom: 0;
    width: 250px;
    background-color: #f5f5f5;
    border-radius: 2px
}

.share-wrap .arrow {
    position: absolute;
    z-index: -1;
    top: -3px;
    right: 20px;
    display: block;
    width: 10px;
    height: 10px;
    transform: rotate(45deg);
    background-color: #f5f5f5
}

.share-btn {
    float: right;
    position: relative
}

.share-outer {
    display: flex;
    justify-content: flex-end;
    border: none;
    text-shadow: none;
    text-decoration: none;
    width: auto;
    color: #0681d0;
    height: 28px;
    line-height: 26px
}

.share-outer i {
    font-size: 18px;
    margin-right: 5px;
    color: #36adf9
}

.share-outer:hover {
    transform: none;
    cursor: pointer
}

.share-icons {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap
}

.share-icons a {
    border-radius: 50%;
    display: inline-block;
    vertical-align: middle;
    zoom: 1;
    margin: 3px;
    transition: .3s;
    text-align: center;
    color: #70b6ff;
    width: 28px;
    height: 28px;
    line-height: 26px;
    font-size: 13px
}

.share-icons a i {
    font-size: 24px
}

.share-icons a.weibo {
    color: #d81e06
}

.share-icons a.weixin {
    color: #51c332
}

.share-icons a.qq {
    color: #4cafe9
}

.share-icons a.douban {
    color: #05b711
}

.share-icons a.twitter {
    color: #00aced
}

.share-icons a.facebook {
    color: #3b5998
}

.share-icons a.google {
    color: #dd4b39
}

.share-icons a:active {
    color: ocean
}

.share-icons a:hover {
    transform: scale(1.2)
}

.wx-share-modal {
    position: fixed;
    top: 24%;
    left: 50%;
    z-index: 9999;
    padding: 20px;
    text-align: center;
    color: #727272;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 5px 0 rgba(0, 0, 0, .16), 0 2px 10px 0 rgba(0, 0, 0, .12);
    opacity: 0;
    transform: translate(-50%, -200%)
}

.wx-share-modal p {
    margin-bottom: 10px
}

.wx-share-modal.ready {
    visibility: 0;
    display: block;
    transform: translate(-50%, -100%);
    transition: .3s
}

.wx-share-modal.in {
    display: block;
    visibility: visible;
    opacity: 1;
    transform: translate(-50%)
}

.wx-share-modal .modal-close {
    position: absolute;
    right: 15px;
    top: 15px;
    color: rgba(0, 0, 0, .2);
    font-size: 16px;
    line-height: 20px
}

.wx-share-modal .modal-close i {
    font-size: 24px
}

.wx-share-modal .modal-close:active, .wx-share-modal .modal-close:hover {
    color: rgba(0, 0, 0, .4)
}

#share-mask {
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-color: rgba(0, 0, 0, .6);
    z-index: 999;
    display: none
}

#friends_link .friends_li {
    list-style: none;
    float: left
}

#friends_link .friends_li a {
    padding: 15px 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 17px;
    text-decoration: none;
    background-color: rgba(6, 129, 208, .1);
    color: #000;
    border-radius: 6px;
    margin-right: 20px;
    margin-bottom: 20px
}

#friends_link .friends_li a img {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px
}

#friends_link .friends_li a i {
    font-size: 25px;
    width: 40px;
    height: 40px
}

#friends_link .friends_li a:hover {
    background-color: rgba(6, 129, 208, .15)
}

.ads {
    position: absolute;
    right: 0;
    top: 50px;
    z-index: 2;
    transform: translateX(110%)
}

.ads li, .ads ul {
    list-style: none;
    padding-left: 0;
    margin-left: 0
}

.ads img {
    display: block;
    margin-bottom: 15px
}

@media (max-width: 768px) {
    .ads {
        display: none
    }
}

.navbar {
    position: relative;
    padding-top: 3rem;
    text-align: center
}

.navbar .nav {
    list-style: none;
    padding-left: 0;
    margin-left: 0
}

.navbar .nav .nav-item-link {
    display: block;
    padding: 1rem;
    color: #bbb;
    text-decoration: none;
    cursor: pointer
}

.navbar .nav .nav-item-link:hover {
    opacity: .8;
    background-color: #403e3e
}

.navbar .nav.nav-main {
    height: 60vh;
    overflow-y: scroll;
    scrollbar-width: none;
    -ms-overflow-style: none
}

.navbar .nav.nav-main::-webkit-scrollbar {
    width: 0;
    height: 0
}

.navbar .nav.nav-main .nav-item-link i {
    font-size: 1rem;
    display: block;
    line-height: 1
}

.navbar-bottom {
    position: absolute;
    bottom: 0;
    width: 100%;
    font-size: 2rem
}

.logo {
    text-align: center;
    margin-bottom: 2rem
}

.logo img {
    width: 4.2rem
}

.todark, .totop {
    position: relative;
    display: block;
    overflow: hidden;
    cursor: pointer;
    width: 3.2rem;
    height: 3.2rem;
    border-radius: 3.2rem;
    background-color: #efefef;
    line-height: 3rem;
    opacity: .6;
    transition: opacity 1s ease
}

.todark:hover, .totop:hover {
    opacity: 1
}

.totop {
    margin-bottom: .8rem
}

.totop:hover > i {
    -webkit-animation: rocket .3s ease-in-out;
    animation: rocket .3s ease-in-out
}

@-webkit-keyframes rocket {
    0% {
        transform: translateY(0);
        opacity: 1
    }
    45% {
        transform: translateY(-3.2rem);
        opacity: 0
    }
    55% {
        transform: translateY(3.2rem);
        opacity: 0
    }
    to {
        transform: translateY(0);
        opacity: 1
    }
}

@keyframes rocket {
    0% {
        transform: translateY(0);
        opacity: 1
    }
    45% {
        transform: translateY(-3.2rem);
        opacity: 0
    }
    55% {
        transform: translateY(3.2rem);
        opacity: 0
    }
    to {
        transform: translateY(0);
        opacity: 1
    }
}

@media (max-width: 768px) {
    html {
        font-size: 60%
    }
}