:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --line:#d9e1ea;
  --text:#1f2a37;
  --muted:#5c6b7a;
  --accent:#1d4f91;
  --accent-soft:#eaf1fb;
  --shadow:0 10px 30px rgba(31,42,55,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-y:scroll}
body{
  min-height:100vh;
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#eef4fb 0,#f7f9fc 180px,var(--bg) 180px);
  line-height:1.7;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(217,225,234,.8);
}
.header-inner{max-width:1180px;margin:0 auto;padding:18px 20px 14px}
.lab-title{font-size:1.45rem;font-weight:700;color:#17345c;margin-bottom:10px;letter-spacing:.02em}
nav{display:flex;flex-wrap:wrap;gap:8px 10px}
nav a{
  padding:8px 12px;border-radius:999px;color:var(--text);
  font-size:.95rem;transition:.2s;background:transparent;border:1px solid transparent;
}
nav a:hover{background:#fff;border-color:var(--line);text-decoration:none}
nav a.active{background:var(--accent);color:#fff}
.container{max-width:1180px;margin:0 auto;padding:24px 20px 60px}
.lang-switch{margin:0 0 18px;text-align:right;color:var(--muted);font-size:.96rem}
.hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:stretch;
  margin-bottom:24px;
}
.hero-text,.card{
  background:var(--card);border:1px solid rgba(217,225,234,.9);border-radius:var(--radius);box-shadow:var(--shadow)
}
.hero-text{padding:34px}
.hero-text .eyebrow{margin:0 0 10px;color:var(--accent);font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-size:.82rem}
.hero h1{margin:0 0 14px;font-size:clamp(1.9rem,3.1vw,3rem);line-height:1.2;color:#17345c}
.hero p{margin:0;color:var(--muted);font-size:1.02rem}
.hero-image{min-height:100%;aspect-ratio:4/3;background:var(--card);border:1px solid rgba(217,225,234,.9);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.hero-image img{display:block;width:100%;height:100%;object-fit:cover;object-position:center bottom}
.card-section{margin-top:0}
.card{padding:28px 32px;margin-bottom:22px}
.card h1,.card h2,.card h3{color:#17345c;line-height:1.3}
.card h1{font-size:2rem;margin:0 0 18px}
.card h2{font-size:1.35rem;margin:26px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.card h3{font-size:1.24rem;margin:20px 0 8px}
.card p,.card li,.card td,.card th{font-size:1rem}
.card ul,.card ol{padding-left:1.35rem}
.card img{max-width:100%;height:auto;border-radius:12px}
.card table{width:100%;border-collapse:collapse;display:block;overflow-x:auto}
.card table tbody,.card table tr{width:100%}
.card th,.card td{border:1px solid var(--line);padding:10px 12px;vertical-align:top;background:#fff}
.card th{background:var(--accent-soft);font-weight:700}
.card hr{border:none;border-top:1px solid var(--line);margin:22px 0}
.card .legacy-content > tr,
.card .legacy-content > tbody > tr{display:block;margin-bottom:12px}
.card .legacy-content font{font:inherit;color:inherit}
.card .legacy-content table{margin:14px 0}
.card .legacy-content td[style*="text-align : center"],
.card .legacy-content th[style*="text-align : center"]{ text-align:center }
.note{color:var(--muted);font-size:.95rem}
footer{border-top:1px solid var(--line);padding:22px 20px;color:var(--muted);text-align:center;font-size:.94rem}
@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .hero-image img{max-height:420px}
  .card{padding:22px}
}
@media (max-width: 640px){
  .header-inner{padding:14px 14px 12px}
  .container{padding:18px 14px 40px}
  .lab-title{font-size:1.18rem}
  nav a{font-size:.9rem;padding:7px 10px}
  .hero-text{padding:22px}
}

.plain-content table,
.plain-content th,
.plain-content td{
  border:none !important;
  background:transparent !important;
  box-shadow:none !important;
}
.plain-content table{display:table;overflow:visible;width:auto}
.plain-content tbody,.plain-content tr{width:auto}
.plain-content td,.plain-content th{padding:0 !important}
.plain-content > tr,
.plain-content > tbody > tr{margin-bottom:0}


/* Publication accordion */
.publication-accordion{margin-top:18px}
.pub-year{
  border:1px solid var(--line);
  border-radius:16px;
  background:#fff;
  margin:0 0 14px;
  overflow:hidden;
}
.pub-year summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:16px 18px;
  background:linear-gradient(180deg,#fbfdff 0,#f4f8fd 100%);
  font-weight:700;
  color:#17345c;
}
.pub-year summary::-webkit-details-marker{display:none}
.pub-year summary::after{
  content:"+";
  margin-left:auto;
  width:28px;
  height:28px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--accent-soft);
  color:var(--accent);
  font-size:1.1rem;
  flex:0 0 28px;
}
.pub-year[open] summary::after{content:"−"}
.pub-year-label{font-size:1.08rem}
.pub-list{margin:0;list-style:none;padding:0 22px 18px 22px}
.pub-list li{margin:0 0 10px;padding-top:10px}
.pub-list li + li{border-top:1px solid rgba(217,225,234,.75)}
.pub-list a{word-break:break-word}

/* Gallery page */
.gallery-message{
  margin:0;
  color:var(--muted);
  font-size:1.05rem;
}


/* Research grid */
.research-lead{
  text-align:center;
  font-size:1.35rem;
  line-height:1.45;
  color:#17345c;
  font-weight:700;
  margin:0 0 16px;
}
.research-intro{margin-bottom:18px}
.research-image-wrap{margin:18px 0 26px;text-align:center}
.research-image-wrap img{display:block;width:100%;max-width:460px;height:auto;max-height:none;object-fit:contain;object-position:center;border-radius:14px;margin:0 auto}
.research-block{margin-top:28px}
.research-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(270px,1fr));
  gap:18px;
  margin-top:14px;
}
.research-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px 22px;
  box-shadow:0 6px 18px rgba(31,42,55,.05);
}
.research-item h3{margin:0 0 8px;font-size:1.05rem}
.research-item .objective{margin:0 0 10px;color:var(--muted);font-size:.95rem}
.research-item ul{margin:0;padding-left:1.2rem}
.research-item li{font-size:.97rem;line-height:1.65}


/* Gallery grid */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px;
  margin-top:18px;
}
.gallery-grid img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:12px;
}

@media (max-width: 640px){
  .research-grid{grid-template-columns:1fr}
  .research-lead{font-size:1.18rem;}
}

/* Top page text balance fix */
.card h1 {
  font-size: 1.6rem; /* slightly smaller */
}

.card p {
  font-size: 1.1rem; /* slightly larger */
}

/* precise top page fix */
.container .card h1{
  font-size:1.4rem !important;
}
.container .card p{
  font-size:1.15rem !important;
}


/* Top page hero text balance fix */
.hero h1{
  font-size: clamp(1.7rem, 2.6vw, 2.5rem) !important;
}
.hero p{
  font-size: 1.12rem !important;
}
.hero-text .eyebrow{
  font-size: .82rem !important;
}



/* Member name alignment fix */
.member-name{
  padding-left: 1.2em !important;
  text-align: left !important;
  text-indent: 0 !important;
  white-space: normal !important;
}