/* Modern, responsive, accessible baseline */
:root{
  --bg: #0b1220;
  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.09);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.70);
  --border: rgba(255,255,255,0.14);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 16px;

  --container: 1120px;
  --gap: 18px;
  --pad: 18px;

  --accent: #7dd3fc;   /* light cyan */
  --accent-2: #a7f3d0; /* mint */
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 10% 0%, rgba(125,211,252,0.20), transparent 60%),
    radial-gradient(900px 450px at 90% 10%, rgba(167,243,208,0.18), transparent 60%),
    linear-gradient(180deg, #070b14, #0b1220 40%, #070b14);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN",
               "Hiragino Sans", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.7;
}

a{
  color: var(--text);
  text-decoration: none;
}
a:hover{ text-decoration: underline; }
a:focus-visible{
  outline: 3px solid rgba(125,211,252,0.7);
  outline-offset: 3px;
  border-radius: 8px;
}

.container{
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.skip-link{
  position: absolute;
  left: -9999px;
  top: 10px;
  padding: 10px 12px;
  background: #fff;
  color: #000;
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus{
  left: 16px;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(7,11,20,0.60);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand-sub{
  margin: 0 0 2px 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.02em;
}
.brand-title{
  margin: 0;
  font-size: clamp(18px, 2.4vw, 26px);
  letter-spacing: 0.02em;
}

.site-nav{
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle{
  display: none;
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
}

.nav-menu{
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
}
.nav-link{
  display: inline-flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--text);
  font-size: 14px;
  white-space: nowrap;
}
.nav-link:hover{
  background: rgba(255,255,255,0.06);
  text-decoration: none;
}
.nav-link[aria-current="page"]{
  border-color: rgba(125,211,252,0.45);
  background: rgba(125,211,252,0.10);
}
.nav-link--en{
  border-color: rgba(167,243,208,0.35);
  background: rgba(167,243,208,0.10);
}

.site-main{
  padding: 18px 0 40px;
}

.hero-inner{
  padding: 12px 0 6px;
}
.hero-media{
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.hero img{
  display: block;
  width: 100%;
  height: auto;
}

.content{ margin-top: 18px; }

.grid{
  display: grid;
  grid-template-columns: 1.5fr 0.7fr;
  gap: var(--gap);
  align-items: start;
}
.card--full{
  grid-column: 1 / -1;
}

.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card--compact .card-body{ padding-top: 10px; }

.card-header{
  padding: var(--pad);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), transparent);
}
.card-title{
  margin: 0;
  font-size: 16px;
  letter-spacing: 0.06em;
}
.card-body{
  padding: var(--pad);
  color: rgba(255,255,255,0.88);
}
.card-body p{ margin: 0; }

.list{
  margin: 0;
  padding-left: 18px;
}
.list li{ margin: 6px 0; }

.news{
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.news-item{
  padding: 12px 12px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  background: rgba(255,255,255,0.04);
}
.news-date{
  display: inline-block;
  font-size: 12px;
  color: var(--muted);
  margin-right: 10px;
  letter-spacing: 0.02em;
}
.news-text{
  color: rgba(255,255,255,0.90);
}
.news-item a{
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.news-item a:hover{
  color: var(--accent-2);
}

.site-footer{
  border-top: 1px solid var(--border);
  background: rgba(7,11,20,0.75);
}
.footer-inner{
  padding: 18px 0;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 900px){
  .grid{
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px){
  .nav-toggle{ display: inline-flex; }
  .nav-menu{
    display: none;
    position: absolute;
    right: 16px;
    top: 64px;
    flex-direction: column;
    align-items: stretch;
    width: min(320px, calc(100vw - 32px));
    padding: 10px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(7,11,20,0.92);
    box-shadow: var(--shadow);
  }
  .nav-menu.is-open{ display: flex; }
  .nav-link{ width: 100%; justify-content: flex-start; }
}

.media{
  margin: 0 0 14px 0;
}
.media img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
}
.section{
  margin-top: 18px;
}
.section-title{
  margin: 0 0 8px 0;
  font-size: 16px;
  letter-spacing: 0.02em;
}

.member-table-wrapper{
  overflow-x: auto;
}

.member-table{
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.member-table thead th{
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.25);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.member-table tbody td{
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  vertical-align: top;
}

.member-table tbody tr:hover{
  background: rgba(255,255,255,0.04);
}

.note{
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.pub-nav{
  display: flex;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 14px;
}
.pub-nav a{
  color: var(--accent);
}
.pub-nav-current{
  color: var(--muted);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
}

.pub-year{
  margin-top: 24px;
}

.pub-list{
  padding-left: 22px;
}
.pub-list li{
  margin-bottom: 10px;
}

.orcid-list{
  padding-left: 18px;
}
.orcid-list li{
  margin-bottom: 6px;
}

.address p{
  margin: 0 0 12px 0;
  font-style: normal;
  line-height: 1.6;
}

/* Access page: place card in left column, next row */
.card--left{
  grid-column: 1 / 2;   /* 左カラム（連絡先と同じ幅） */
}