*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:'Noto Serif JP','Georgia',serif;background:#fafaf8;color:#1a1a1a;line-height:1.9;}
nav{background:#fff;border-bottom:1px solid #e0e0e0;padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:58px;position:sticky;top:0;z-index:100;}
.nav-brand{font-family:'Montserrat',sans-serif;font-size:14px;font-weight:600;color:#1a1a1a;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;}
.nav-links{display:flex;gap:28px;align-items:center;flex-wrap:wrap;}
.nav-links a{font-family:'Montserrat',sans-serif;font-size:11px;color:#555;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;transition:color .15s;}
.nav-links a:hover{color:#1a1a1a;}
.nav-links a.active{color:#1a1a1a;border-bottom:1px solid #1a1a1a;padding-bottom:2px;}
.lang-switch{font-family:'Montserrat',sans-serif;font-size:11px;font-weight:600;letter-spacing:.08em;color:#555;text-decoration:none;border:1px solid #ddd;padding:4px 12px;border-radius:5px;transition:all .15s;}
.lang-switch:hover{background:#1a1a1a;color:#fff;border-color:#1a1a1a;}
.paper-wrap{max-width:720px;margin:0 auto;padding:4rem 2rem 6rem;}
.paper-header{border-bottom:2px solid #1a1a1a;padding-bottom:2rem;margin-bottom:2.5rem;}
.paper-series{font-family:'Montserrat',sans-serif;font-size:10px;color:#888;letter-spacing:.15em;text-transform:uppercase;margin-bottom:1rem;font-variant-numeric:lining-nums;font-feature-settings:"lnum" 1,"onum" 0;}
.paper-series span{color:#1a1a1a;font-weight:600;}
.paper-title{font-family:'Cormorant Garamond',serif;font-size:30px;font-weight:700;line-height:1.25;color:#1a1a1a;margin-bottom:.6rem;font-variant-numeric:lining-nums;font-feature-settings:"lnum" 1,"onum" 0;}
.paper-subtitle{font-family:'Noto Serif JP',serif;font-size:16px;color:#555;margin-bottom:1.5rem;font-weight:400;line-height:1.5;}
.paper-meta{display:flex;flex-wrap:wrap;gap:1.5rem;font-family:'Montserrat',sans-serif;font-size:11.5px;color:#888;border-top:1px solid #e0e0e0;padding-top:1rem;margin-top:1rem;}
.paper-meta strong{color:#1a1a1a;}
.abstract{background:#f5f5f3;border-left:3px solid #1a1a1a;padding:1.25rem 1.5rem;margin-bottom:2.5rem;border-radius:0 6px 6px 0;}
.abstract-label{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#888;font-weight:600;margin-bottom:.6rem;}
.abstract-text{font-size:13.5px;line-height:1.85;color:#333;}
.keywords{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:2.5rem;align-items:center;}
.kw-label{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#888;font-weight:600;margin-right:4px;}
.kw-tag{padding:3px 10px;border-radius:12px;font-size:11.5px;border:1px solid #ddd;color:#555;font-family:'Montserrat',sans-serif;text-decoration:none;display:inline-block;transition:all .15s;}
.kw-tag:hover{border-color:#1a1a1a;color:#1a1a1a;}
a.kw-tag{background:#fef3e2;color:#8a5a00;border-color:#f0d9a8;}
a.kw-tag:hover{background:#fbe4b8;border-color:#e0b56a;}
.paper-body h2{font-family:'Cormorant Garamond',serif;font-size:21px;font-weight:700;color:#1a1a1a;margin:2.5rem 0 1rem;padding-bottom:.4rem;border-bottom:1px solid #e0e0e0;font-variant-numeric:lining-nums;font-feature-settings:"lnum" 1,"onum" 0;}
.paper-body h3{font-family:'Noto Serif JP',serif;font-size:15px;font-weight:600;color:#1a1a1a;margin:1.75rem 0 .75rem;}
.paper-body p{font-size:14px;line-height:2;color:#222;margin-bottom:1.1rem;}
.eval{background:#fff;border:1px solid #e0e0e0;border-left:3px solid #888;padding:1rem 1.25rem;margin:1.25rem 0;border-radius:0 6px 6px 0;}
.eval-label{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#888;font-weight:600;margin-bottom:.4rem;}
.eval p{font-size:13px;line-height:1.8;color:#444;font-style:italic;}
.mechanism-box{background:#f3f6f5;border:1px solid #dde5e2;border-radius:8px;padding:1.25rem 1.5rem;margin:1.5rem 0;}
.mechanism-title{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#5a7a6e;font-weight:600;margin-bottom:.7rem;}
.mechanism-box p{font-size:13px;line-height:1.8;color:#3a4a44;margin-bottom:0;}
.watchlist{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:1.25rem 1.5rem;margin:1.5rem 0;}
.watchlist-title{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#888;font-weight:600;margin-bottom:.85rem;}
.watch-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:.75rem;}
.watch-item:last-child{margin-bottom:0;}
.watch-num{font-family:'Cormorant Garamond',serif;font-size:20px;font-weight:700;color:#1a1a1a;line-height:1;flex-shrink:0;width:24px;}
.watch-title{font-size:13px;font-weight:600;color:#1a1a1a;margin-bottom:2px;}
.watch-desc{font-size:12.5px;color:#555;line-height:1.6;}
.disclaimer{margin-top:1.5rem;padding:1rem 1.25rem;background:#f5f5f3;border-radius:6px;font-family:'Montserrat',sans-serif;font-size:11px;color:#888;line-height:1.8;}
.disclaimer strong{color:#555;}
.paper-nav{display:flex;gap:1rem;margin-top:2rem;}
.paper-nav a{font-family:'Montserrat',sans-serif;font-size:11.5px;color:#555;text-decoration:none;border:1px solid #ddd;padding:6px 14px;border-radius:5px;transition:all .15s;}
.paper-nav a:hover{background:#1a1a1a;color:#fff;border-color:#1a1a1a;}
.paper-footer{border-top:1px solid #e0e0e0;padding-top:1.5rem;margin-top:3rem;font-family:'Montserrat',sans-serif;font-size:11px;color:#aaa;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;}
.timeline-box{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:1.25rem 1.5rem;margin:1.5rem 0;}
.timeline-title{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#888;font-weight:600;margin-bottom:1rem;}
.tl-item{display:flex;gap:14px;margin-bottom:.85rem;align-items:flex-start;}
.tl-item:last-child{margin-bottom:0;}
.tl-date{font-family:'Montserrat',sans-serif;font-size:11px;font-weight:600;color:#1a1a1a;width:80px;flex-shrink:0;padding-top:1px;}
.tl-desc{font-size:13px;color:#444;line-height:1.7;border-left:2px solid #eee;padding-left:14px;flex:1;}
.compare-box{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:1.25rem 1.5rem;margin:1.5rem 0;}
.compare-title{font-family:'Montserrat',sans-serif;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#888;font-weight:600;margin-bottom:.85rem;}
.compare-row{display:flex;gap:1.5rem;}
.compare-col{flex:1;}
.compare-col-label{font-family:'Montserrat',sans-serif;font-size:11px;color:#1a1a1a;font-weight:600;letter-spacing:.04em;margin-bottom:.4rem;border-bottom:1px solid #eee;padding-bottom:.3rem;}
.compare-col p{font-size:12.5px;color:#555;line-height:1.7;margin:0;}
@media (max-width:600px){
  nav{padding:0 1rem;flex-wrap:wrap;height:auto;min-height:58px;}
  .nav-links{gap:14px;}
  .nav-links a{font-size:10px;}
  .lang-switch{padding:3px 8px;font-size:10px;}
  .paper-wrap{padding:2.5rem 1.25rem 4rem;}
  .paper-title{font-size:24px;}
}