@supports (--foo: bar) {

body, h1, ul, li, p, a {
  margin: 0; padding: 0; border: 0 none;
  text-decoration: none;
}
ul, li {
  list-style: none;
}

html.loading,
html.loading *,
html.loading ::before,
html.loading ::after {
  transition: none !important;
}
html {
  --light-bg: #ffffff;
  --dark-bg: #454545;
  --theme-time: 2s;
  --item-height: 64px;
  --list-left-bar: 3px;
  --item-start-offset: 0px;
  --logo-size: 233px;
  background-color: var(--light-bg);
  transition: background-color var(--theme-time);
}
html.dark {
  background-color: var(--dark-bg);
}
body {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
body::before {
  content: "";
  flex-grow: 1;
}
body::after {
  content: "";
  flex-grow: 1.5;
}
h1 {
  position: relative;
  width: var(--logo-size);
  height: var(--logo-size);
  left: -96px;
}
h1::before,
h1::after {
  content: "";
  display: block;
  position: absolute;
  top: 0; left: 0;
  width: var(--logo-size);
  height: var(--logo-size);
}
h1::before {
  background: center/110% url(logo_dark.png);
  background-color: var(--dark-bg);
}
h1::after {
  background: center/110% url(logo_light.png);
  background-color: var(--light-bg);
  transition: opacity var(--theme-time);
}
html.theme-may-change h1::after {
  will-change: opacity;
}
html.dark h1::after {
  opacity: 0;
}
#list {
  width: 225px;
  margin: -192px 0 0 320px;
}
#list a {
  color: transparent;
  display: block;
  height: var(--item-height);
  line-height: calc(var(--item-height) * 1.05);
  position: relative;
  outline: 0;
}
#list a::before,
#list a::after {
  display: block;
  width: 100%; height: 100%;
  text-indent: calc(var(--list-left-bar) + var(--item-height) +
                    var(--item-start-offset));
  box-sizing: border-box;
  background: calc(var(--list-left-bar) + var(--item-start-offset)) /
              var(--item-height) no-repeat;
  content: var(--content);
  position: absolute;
  top: 0; left: 0;
  overflow: hidden;
}
#list a::before {
  color: var(--color);
  background-image: var(--image-normal);
  transition: background-color var(--theme-time);
}
#list a::after {
  color: white;
  background-color: var(--color);
  width: var(--list-left-bar);
  transition: width .3s;
  background-image: var(--image-active);
}
#list li:hover a::after,
#list li a:focus::after {
  width: 100%;
}

#twitter {
  --color: #1da1f2;
  --content: "Twitter";
  --image-normal: url(sites.svg#twitterc);
  --image-active: url(sites.svg#twitterw);
}
#github {
  --color: #808080;
  --content: "GitHub";
  --image-normal: url(sites.svg#githubc);
  --image-active: url(sites.svg#githubw);
}
#bangumi {
  --color: #f09199;
  --content: "Bangumi";
  --image-normal: url(sites.svg#bangumic);
  --image-active: url(sites.svg#bangumiw);
}

footer {
  flex-grow: 1;
  flex-direction: column;
  justify-content: flex-end;
  max-height: 96px;
  min-height: 50px;
  display: flex;
  text-align: center;
  font-size: 80%;
  color: #999;
}
footer li {
  display: inline-block;
  padding: 0 10px;
}
footer li:not(:first-child) {
  border-left: 1px solid currentcolor;
}
footer a {
  color: #ccc;
}
footer a:hover {
  text-decoration: underline;
}
footer p {
  margin-top: 8px;
}

#theme-switch + label {
  position: fixed;
  right: 15px;
  bottom: 15px;
  width: 24px; height: 16px;
  background: #ccc;
  border-radius: 8px;
  cursor: pointer;
}
#theme-switch + label::before {
  content: "";
  display: block;
  position: absolute;
  top: 1px; left: 1px;
  width: 14px; height: 14px;
  border-radius: 8px;
  background: #fff;
  transition: all .3s;
}
#theme-switch:checked + label::before {
  background: #454545;
  left: 9px;
}

@media (max-width: 450px) {

html {
  --item-start-offset: 36px;
}
body::after {
  flex-grow: 3;
}
h1 {
  left: auto;
  flex-grow: 2;
  min-height: var(--logo-size);
  max-height: 280px;
}
#list {
  margin: auto;
}
footer p {
  margin-top: 5px;
}

} /* @media (max-width: 450px) */

} /* @supports (--foo: bar) */