:root {
  --global-bg-color: #fff;
  --global-footer-bg-color: #f2f3f3;
  --global-border-color: #f2f3f3;
  --global-dark-border-color: #bdc1c4;
  --global-link-color: #52adc8;
  --global-link-color-hover: #235f6e;
  --global-masthead-link-color: #494e52;
  --global-masthead-link-color-hover: #5b6268;
  --global-text-color: #494e52;
  --global-text-color-light: #9ba1a6;
  --global-transition: all 0.2s ease-in-out;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  padding-top: 70px;
  color: var(--global-text-color);
  background: var(--global-bg-color);
  font-family: -apple-system, ".SFNSText-Regular", "San Francisco", "Roboto", "Segoe UI", "Helvetica Neue", "Lucida Grande", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: var(--global-link-color);
  text-decoration: underline;
  transition: var(--global-transition);
}

a:hover,
a:focus {
  color: var(--global-link-color-hover);
}

.masthead {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  background: var(--global-bg-color);
}

.masthead::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--global-border-color);
}

.masthead__inner-wrap {
  margin: 0;
  padding: 0.5em 4.1em;
}

.visible-links {
  display: flex;
  align-items: center;
  gap: 0;
  min-height: 54px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.masthead__menu-item {
  display: block;
  white-space: nowrap;
}

.masthead__menu-item a,
.theme-toggle {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--global-masthead-link-color);
  font-size: 1rem;
  text-decoration: none;
}

.masthead__menu-item a:hover,
.theme-toggle:hover {
  color: var(--global-masthead-link-color-hover);
  text-decoration: none;
}

.masthead__menu-item--lg {
  padding-right: 2em;
  font-weight: 700;
}

.theme-toggle {
  border: 0;
  background: transparent;
  font: inherit;
  cursor: default;
}

#main {
  display: grid;
  grid-template-columns: minmax(190px, 250px) minmax(0, 900px);
  gap: 104px;
  max-width: none;
  margin: 2em 0 0;
  padding: 0 4.1em 4em;
}

.sidebar {
  align-self: start;
}

.author__avatar img {
  width: 100%;
  max-width: 175px;
  padding: 5px;
  border: 1px solid var(--global-border-color);
  border-radius: 50%;
}

.author__name {
  margin: 10px 0;
  color: var(--global-text-color);
  font-size: 1em;
  line-height: 1.2;
}

.author__bio {
  max-width: 250px;
  margin: 10px 0 20px;
  font-size: 0.75em;
  line-height: 1.5;
}

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

.author__urls li {
  margin-bottom: 0.5em;
  color: var(--global-text-color);
  font-size: 0.75em;
  line-height: 1.5;
  white-space: nowrap;
}

.author__urls a {
  color: inherit;
  text-decoration: none;
}

.author__urls a:hover {
  text-decoration: underline;
}

.profile-icon {
  display: inline-block;
  width: 1.6em;
  margin-right: 0.45em;
  color: var(--global-text-color);
  font-weight: 700;
}

.archive,
.page {
  min-width: 0;
}

h1,
h2,
h3 {
  color: var(--global-text-color);
  font-family: inherit;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  margin: 0 0 1.3em;
  font-size: 1.563em;
}

h2 {
  margin: 2em 0 0.5em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--global-border-color);
  font-size: 1.25em;
}

p {
  margin: 0 0 1.3em;
}

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

.talk-list li {
  margin-bottom: 1.8em;
}

.archive__item-title {
  margin: 1em 0 0.25em;
  border-bottom: 0;
  font-size: 1.25em;
  line-height: 1.25;
}

.archive__item-title a {
  color: var(--global-link-color);
  font-weight: 700;
}

.page__meta,
.archive__item-excerpt {
  margin: 0 0 4px;
  font-size: 0.75em;
}

.archive__item-excerpt {
  color: var(--global-text-color);
}

.details {
  display: inline-block;
  margin-top: 0.2em;
  font-size: 0.75em;
}

.nav {
  margin: 0 0 1.4em;
  font-size: 0.75em;
}

.talk-meta {
  margin: -0.4em 0 1.6em;
  color: var(--global-text-color);
  font-size: 0.875em;
}

.talk-meta dt {
  float: left;
  clear: left;
  min-width: 6.5em;
  margin: 0 0 0.35em;
  font-weight: 700;
}

.talk-meta dd {
  margin: 0 0 0.35em 7.2em;
}

.excerpt {
  margin: 0 0 1.8em;
  padding-left: 1em;
  border-left: 0.25em solid var(--global-border-color);
  font-style: italic;
}

.button {
  display: inline-block;
  padding: 0.55em 0.9em;
  border-radius: 4px;
  background: var(--global-link-color);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.button:hover,
.button:focus {
  color: #fff;
  background: var(--global-link-color-hover);
  text-decoration: none;
}

.talk-image {
  max-width: min(100%, 760px);
  height: auto;
  border: 1px solid var(--global-border-color);
  border-radius: 4px;
}

.site-footer {
  margin-top: 3em;
  padding: 1.5em 1em;
  border-top: 1px solid var(--global-dark-border-color);
  background: var(--global-footer-bg-color);
}

.site-footer__inner {
  margin: 0;
  padding-left: 3.1em;
  color: var(--global-text-color-light);
}

@media (max-width: 924px) {
  body {
    padding-top: 58px;
  }

  .visible-links {
    min-height: 42px;
    overflow-x: auto;
  }

  .masthead__menu-item a,
  .theme-toggle {
    padding: 0.4rem 0.7rem;
  }

  .masthead__menu-item--lg {
    padding-right: 0.5em;
  }

  #main {
    display: block;
    margin-top: 1.4em;
    padding-right: 1em;
    padding-left: 1em;
  }

  .sidebar {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 2em;
  }

  .author__avatar img {
    width: 58px;
    padding: 0;
  }

  .author__content {
    flex: 1;
  }

  .author__bio {
    max-width: none;
    margin-bottom: 0;
  }

  .author__urls {
    display: none;
  }
}

@media (max-width: 640px) {
  .masthead__menu-item a,
  .theme-toggle {
    font-size: 0.9rem;
  }

  h1 {
    font-size: 1.45em;
  }

  .talk-meta dt {
    float: none;
    min-width: 0;
  }

  .talk-meta dd {
    margin-left: 0;
  }
}