@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@200..900&display=swap');

.lecture-series {
  --color-sub: #607083;
  --color-light-blue: #cad7e4;
  --color-main: #001e50;
  --color-pale-blue: #f3f7fb;
  --font-serif: "Noto Serif JP", serif;
  --font-xs: 0.125rem;
  --font-sm: 0.175rem;
  --font-md: 0.2rem;
  --font-lg: 0.25rem;
  --font-xl: 0.35rem;
  --font-xxl: 0.5rem;
  box-sizing: border-box;
}

.lecture-series *,
.lecture-series *::before,
.lecture-series *::after {
  box-sizing: border-box;
}

.hero-section {
  margin: 35px 0;
  border-bottom: 1px solid var(--color-light-blue);
}

.hero-section > div {
  min-width: 0;
}

.hero-section .title-box {
  margin: 0 0 15px;
  padding: 20px 20px 30px 20px;
  color: #ffffff;
  background-color: var(--color-main);
}

.hero-section h1 {
  margin: 0 0 15px;
  max-width: 600px;
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  font-size: var(--font-xl);
}

.hero-section .subtitle {
  margin: 0;
  font-size: var(--font-sm);
  line-height: 1.1;
  font-weight: 300;
}

.hero-section .subtitle.small {
  font-size: var(--font-xs);
}

.hero-section .intro {
  margin: 0 0 30px;
  line-height: 1.8;
}

.lecture-header {
  min-width: 0;
  padding: 0;
  border-top: 2px solid var(--color-main);
}

.lecture-header .heading {
  font-size: var(--font-sm);
  font-weight: 700;
  padding: 2px 10px;
  color: #ffffff;
  background-color: var(--color-main);
  display: inline;
}

.lecture-header .heading span {
  font-weight: 300;
  margin-left:15px;
}

.lecture-header .schedule {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 18px;
  margin: 20px 0 10px 0;
}

.lecture-header .date {
  font-size: var(--font-lg);
  font-variant-numeric: lining-nums tabular-nums;
}

.lecture-header .date span,
.lecture-header .time {
  margin-left: 4px;
  font-size: var(--font-sm);
}

.lecture-header .title {
  margin: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-serif);
  line-height: 1.2;
  font-size: var(--font-lg);
}

.lecture-header .speaker {
  margin: 18px 0;
  overflow-wrap: anywhere;
  font-size: var(--font-sm);
}

.lecture-header .speaker span {
  color: var(--color-sub);
  font-size: var(--font-xs);
}

.lecture-header .link {
  color: var(--color-main);
  font-size: var(--font-xs);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
  margin: 20px 0;
  display: block;
  text-align: right;
}

.lectures-section {
  margin: 20px 0 50px;
}

.lectures-section .title {
  margin: 20px 0;
}

.lectures,
.documents{
  margin: 0;
  padding: 0;
  list-style: none;
}

.lectures {
  border-top: 1px solid var(--color-light-blue);
}

.lectures-info {
  position: relative;
  display: grid;
  align-items: center;
  border-bottom: 1px solid var(--color-light-blue);
  text-decoration: none;
  transition: background-color 170ms ease;
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 20px;
  min-height: 115px;
  padding: 20px 14px 22px 18px;
}

.lectures-info::before {
  inset: 0 auto 0 0;
  position: absolute;
  width: 5px;
  background: var(--color-light-blue);
  content: "";
}

.lectures-info.upcoming::before {
  background: var(--color-main);
}

.lectures-info:hover {
  background: var(--color-light-blue);
}

.lectures-info .meta {
  grid-column: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  white-space: nowrap;
}

.lectures-info .date {
  font-size: var(--font-md);
  margin: 0;
  padding: 0 10px 0 0;
}

.lectures-info .speaker {
  grid-column: 1;
  overflow-wrap: anywhere;
  font-size: var(--font-sm);
  font-weight: 500;
}

.lectures-info .lecture-title {
  grid-column: 1;
  min-width: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-serif);
  font-size: var(--font-sm);
  line-height: 1.5;
}

.lectures-info:hover .lecture-title {
  color: var(--color-main);
}

.lectures-info .arrow {
  grid-column: 2;
  grid-row: 1 / span 3;
  color: var(--color-main);
  font-size: var(--font-lg);
  font-weight: 300;
  transition: transform 160ms ease;
}

.lectures-info:hover .arrow {
  transform: translateX(3px);
}

.lecture-status {
  padding: 3px 10px;
  color: var(--color-main);
  background-color: var(--color-light-blue);
  font-size: var(--font-xs);
}

.lecture-status.upcoming {
  color: #ffffff;
  background-color: var(--color-main);
}

/* detail page */
.lecture-header.detail-page {
  margin: 0 0 50px;
  border-top: none;
}

.lecture-header.detail-page .link {
  text-align: left;
  margin: 20px 0 30px;
}

.detail-box {
  display: block;
}

.detail-box .detail-side {
  margin: 30px 0 0;
  padding: 20px;
  background-color: var(--color-pale-blue);
  color: var(--color-main);
}

.detail-box .titleTypeA.top-title {
  margin-top: 0;
}

.detail-box .detail-side h3 {
  font-size: var(--font-sm);
  font-weight: 600;
}

.documents li {
  padding: 12px 0 14px;
  font-size: var(--font-xs);
}

.documents li + li {
  border-top: 1px solid var(--color-sub);
}

.documents strong {
  display: block;
  margin-bottom: 3px;
  font-weight: 600;
}
span.mat{
	font-family:Times New Roman, Times, serif;	
	font-style:italic;	
}

@media (min-width: 768px) {
  .hero-section {
    align-items: start;
    gap: 32px;
    display: grid;
    min-height: 350px;
    margin: 50px 0 100px;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 1fr);
  }

  .hero-section h1 {
    font-size: var(--font-xxl);
  }

  .hero-section .subtitle{
    font-size: var(--font-md);
  }

  .hero-section .subtitle.small{
    font-size: var(--font-sm);
  }

  .lecture-header .heading,
  .lecture-header .date span,
  .lecture-header .time,
  .lecture-header .speaker,
  .detail-box .detail-side h3 {
    font-size: var(--font-md);
  }

  .lecture-header .date,
  .lecture-header .title {
    font-size: var(--font-xl);
  }

  .lecture-header .speaker span,
  .lecture-header .link {
    font-size: var(--font-sm);
  }

  .lectures-section {
    margin: 0;
  }

  .lectures-info {
    grid-template-columns: 180px 180px minmax(0, 1fr) 18px;
  }

  .lectures-info .meta {
    grid-row: 1;
    flex-direction: column-reverse;
    align-items: baseline;
  }

  .lectures-info .date {
    font-size: var(--font-lg);
  }

  .lectures-info .speaker {
    grid-column: 2;
    grid-row: 1;
    margin-top: 0;
  }

  .lectures-info .lecture-title {
    grid-column: 3;
    grid-row: 1;
    font-size: var(--font-md);
  }

  .lectures-info .arrow {
    grid-column: 4;
    grid-row: 1;
  }

  /* detail page */
  .detail-box {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 32px;
  }

  .detail-box .detail-main {
    grid-column: 1;
  }

  .detail-box .detail-side {
    grid-column: 2;
    margin: 0;
  }
}