body {
  margin: 0;
  padding: 0;
  background-color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: #333;
}

a {
  color: #06c;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  margin-left: auto;
  margin-right: auto;
  padding-left: 15px;
  padding-right: 15px;
}

@media (min-width: 992px) {
  .container {
    width: 970px;
  }
}

.row {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
}

#dhead {
  margin-top: 28px;
}

#dpic {
  grid-column: span 5;
  text-align: right;
}

#ddesc {
  padding-top: 48px;
  padding-left: 28px;
  grid-column: span 7;
}

@media (max-width: 991px) {
  #dpic {
    grid-column: span 12;
    text-align: center;
  }

  #ddesc {
    grid-column: span 12;
    padding-top: 18px;
    padding-left: 0;
    text-align: center;
  }
}

h1 {
  font-size: 34px;
  font-weight: normal;
  padding: 0;
  margin: 0;
}

h1 .aka {
  font-size: 18px;
  color: #999;
  margin-left: 8px;
}

h2 {
  font-weight: normal;
  font-style: italic;
  color: #999;
  font-size: 18px;
  padding: 0;
  margin: 8px 0 14px 0;
}

@media (min-width: 992px) {
  h2 {
    max-width: 420px;
  }
}

#dpic img {
  width: 220px;
  height: 220px;
  border-radius: 110px;
  object-fit: cover;
}

#dico {
  display: flex;
  gap: 10px;
  align-items: center;
}

@media (max-width: 991px) {
  #dico {
    justify-content: center;
  }
}

.iico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #f3f3f3;
  color: #444;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
}

.iico:hover {
  background: #e8e8e8;
  text-decoration: none;
}

#demail {
  margin-top: 10px;
  color: #555;
  opacity: 0;
  transition: opacity 0.7s;
  min-height: 1.2em;
}

#demail.show {
  opacity: 1;
}

hr {
  height: 1px;
  border: 0;
  padding: 0;
  margin: 22px 0;
  background-image: linear-gradient(
    to right,
    rgba(0, 0, 0, 0),
    rgba(0, 0, 0, 0.75),
    rgba(0, 0, 0, 0)
  );
}

.ico {
  grid-column: span 1;
  border-left: 2px solid #cfcfcf;
  position: relative;
}

.badge {
  display: block;
  margin-left: 10px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #f0f0f0;
  color: #666;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  line-height: 42px;
  letter-spacing: 0.02em;
}

.desc {
  grid-column: span 9;
  font-size: 16px;
  padding-left: 18px;
  padding-bottom: 22px;
}

.entry-dot {
  position: absolute;
  top: 0;
  left: -8px;
  width: 10px;
  height: 10px;
  border-radius: 7px;
  background-color: #cfcfcf;
  border: 2px solid white;
}

.timespan {
  grid-column: span 2;
  font-size: 13px;
  text-align: right;
  padding-right: 8px;
  color: #bbb;
  line-height: 1.3;
}

@media (max-width: 991px) {
  .timespan {
    grid-column: span 12;
    text-align: left;
    margin-bottom: 4px;
  }

  .ico {
    display: none;
  }

  .desc {
    grid-column: span 12;
    padding-left: 0;
    border-left: 2px solid #eee;
    padding-left: 14px;
  }
}

.desc ul {
  margin: 8px 0 0 0;
  padding-left: 18px;
}

.desc li {
  margin-bottom: 4px;
}

.ctitle {
  font-size: 32px;
  margin-bottom: 16px;
  margin-top: 36px;
  font-weight: normal;
}

.section {
  padding-bottom: 10px;
}

.muted {
  color: #777;
}

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

.talk-list li,
.project-list li,
.link-list li {
  padding: 8px 0;
  border-bottom: 1px solid #eee;
}

.talk-list li:last-child,
.project-list li:last-child,
.link-list li:last-child {
  border-bottom: none;
}

.tag {
  display: inline-block;
  font-size: 12px;
  color: #888;
  margin-left: 8px;
}

.footer {
  margin: 40px 0 50px;
  color: #aaa;
  font-size: 13px;
  text-align: center;
}

.nav {
  text-align: center;
  padding: 4px 0 0;
}

.nav a {
  display: inline-block;
  padding: 4px 12px;
  color: #666;
  font-size: 14px;
  border-right: 1px solid #ddd;
}

.nav a:last-child {
  border-right: none;
}

.page-head {
  margin-top: 28px;
  margin-bottom: 8px;
}

.page-head h1 {
  font-size: 28px;
}

.page-head .back {
  display: inline-block;
  margin-bottom: 10px;
  color: #888;
  font-size: 14px;
}

.article-item {
  padding: 14px 0;
  border-bottom: 1px solid #eee;
}

.article-item:last-child {
  border-bottom: none;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.article-date {
  color: #bbb;
  font-size: 13px;
  min-width: 88px;
  flex-shrink: 0;
}

.article-title {
  font-size: 17px;
  color: #222;
}

.article-title:hover {
  color: #06c;
}

.article-summary {
  margin: 6px 0 0 0;
  color: #666;
  font-size: 14px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.articles-more {
  margin-top: 14px;
}

.year-group {
  margin-bottom: 10px;
}

.year-title {
  font-size: 22px;
  font-weight: normal;
  color: #999;
  margin: 28px 0 4px;
  padding-bottom: 6px;
  border-bottom: 1px solid #eee;
}

.articles-page .container {
  width: 100%;
  max-width: none;
  box-sizing: border-box;
}

.articles-columns {
  column-count: 4;
  column-gap: 28px;
}

.articles-columns .year-group {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin-bottom: 24px;
}

.articles-columns .year-title {
  margin-top: 0;
}

@media (max-width: 1200px) {
  .articles-columns {
    column-count: 3;
  }
}

@media (max-width: 900px) {
  .articles-columns {
    column-count: 2;
  }
}

@media (max-width: 600px) {
  .articles-columns {
    column-count: 1;
  }
}