:root{
  --ink:#16212b;
  --muted:#667481;
  --navy:#123247;
  --navy-2:#0b2536;
  --teal:#1f6f78;
  --teal-soft:#e8f2f2;
  --paper:#fbfcfc;
  --white:#fff;
  --line:#dbe3e6;
  --line-dark:#c9d4d9;
  --sand:#f4f1ea;
  --shadow:0 18px 55px rgba(16,42,57,.09);
  --radius:18px;
  --max:1180px;
  --sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}
a:hover{color:var(--teal)}
img{max-width:100%;display:block}
button,input,select{font:inherit}
.container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
.skip-link{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px 14px;z-index:1000}.skip-link:focus{left:8px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,252,252,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,227,230,.9)}
.nav-wrap{width:min(calc(100% - 40px),var(--max));margin:auto;min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:26px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.brand-mark{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--navy);color:white;font-family:var(--serif);font-size:14px;letter-spacing:.06em}
.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-text strong{font-size:15px;letter-spacing:.02em}.brand-text small{font-size:11px;color:var(--muted);margin-top:4px;letter-spacing:.04em}
.site-nav{display:flex;align-items:center;gap:28px;font-size:14px}.site-nav a{text-decoration:none;color:#43515d}.site-nav a[aria-current="page"]{color:var(--navy);font-weight:650}.site-nav a:hover{color:var(--teal)}
.site-nav .nav-group{border:1px solid var(--line-dark);border-radius:999px;padding:8px 13px;color:var(--navy)}
.nav-toggle{display:none;border:0;background:transparent;color:var(--navy);font-weight:650}

/* shared */
.eyebrow{margin:0 0 12px;color:var(--teal);font-size:12px;font-weight:750;text-transform:uppercase;letter-spacing:.14em}.eyebrow.light{color:#b7dcde}
.section{padding:92px 0}.section.alt{background:white;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:38px}.section-head h2{font-family:var(--serif);font-weight:500;font-size:clamp(34px,4vw,50px);line-height:1.08;margin:0;color:var(--navy)}.section-head p{max-width:600px;margin:0;color:var(--muted)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 17px;border-radius:999px;text-decoration:none;font-weight:650;font-size:14px;border:1px solid transparent;transition:.18s ease}.button.primary{background:var(--navy);color:white}.button.primary:hover{background:var(--teal);color:white}.button.secondary{border-color:var(--line-dark);color:var(--navy);background:white}.button.secondary:hover{border-color:var(--teal);color:var(--teal)}
.link-arrow{font-weight:650;text-decoration:none;color:var(--teal)}

/* home hero */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f8faf9 0%,#edf4f3 54%,#f7f5ef 100%);border-bottom:1px solid var(--line)}
.hero:before{content:"";position:absolute;width:540px;height:540px;border:1px solid rgba(31,111,120,.15);border-radius:50%;right:-180px;top:-220px}.hero:after{content:"";position:absolute;width:270px;height:270px;border:1px solid rgba(31,111,120,.13);border-radius:50%;right:32px;top:46px}
.hero-grid{position:relative;z-index:2;min-height:650px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.65fr);align-items:center;gap:80px;padding:72px 0}
.hero-kicker{display:flex;align-items:center;gap:12px;color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.hero-kicker:before{content:"";width:34px;height:1px;background:var(--teal)}
.hero h1{font-family:var(--serif);font-size:clamp(56px,7vw,88px);line-height:.96;letter-spacing:-.035em;font-weight:500;margin:22px 0 18px;color:var(--navy)}
.hero .jp-name{font-family:var(--sans);font-size:18px;letter-spacing:.18em;color:#5c6b76;margin-left:4px;font-weight:500}
.hero-role{font-size:20px;line-height:1.55;color:#42515d;max-width:720px;margin:28px 0}.hero-role strong{color:var(--navy)}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.hero-photo-wrap{justify-self:end;position:relative}.hero-photo-frame{width:min(340px,100%);aspect-ratio:4/5;border-radius:160px 160px 22px 22px;overflow:hidden;box-shadow:var(--shadow);background:#dce4e5;border:8px solid rgba(255,255,255,.72)}.hero-photo-frame img{width:100%;height:100%;object-fit:cover;object-position:center top}
.hero-photo-note{position:absolute;left:-44px;bottom:36px;background:white;border:1px solid var(--line);box-shadow:0 12px 32px rgba(12,42,59,.12);padding:14px 16px;border-radius:12px;max-width:190px;font-size:12px;color:var(--muted)}.hero-photo-note strong{display:block;color:var(--navy);font-size:13px;margin-bottom:2px}

/* intro / profile */
.profile-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:90px;align-items:start}.profile-lead{position:sticky;top:120px}.profile-lead h2{font-family:var(--serif);font-size:48px;line-height:1.08;font-weight:500;color:var(--navy);margin:0 0 18px}.profile-lead p{color:var(--muted)}
.fact-list{display:grid;gap:0;border-top:1px solid var(--line)}.fact-row{display:grid;grid-template-columns:125px 1fr;gap:30px;padding:24px 0;border-bottom:1px solid var(--line)}.fact-row dt{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--teal);font-weight:750}.fact-row dd{margin:0;color:#394752}.fact-row strong{color:var(--navy)}
.timeline{margin-top:58px}.timeline h3{font-family:var(--serif);font-size:30px;font-weight:500;color:var(--navy);margin:0 0 18px}.timeline-item{display:grid;grid-template-columns:112px 1fr;gap:24px;padding:17px 0;border-bottom:1px solid var(--line)}.timeline-item time{color:var(--teal);font-weight:700;font-size:13px}.timeline-item p{margin:0;color:#44525d}.timeline-item em{display:block;color:var(--muted);font-style:normal;font-size:13px;margin-top:2px}

/* feature cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:30px;min-height:235px;display:flex;flex-direction:column;transition:.2s ease}.feature-card:hover{transform:translateY(-3px);border-color:#b7c9ce;box-shadow:0 14px 32px rgba(18,50,71,.07)}.feature-card .num{font-family:var(--serif);font-size:42px;color:#b7c9ce;line-height:1;margin-bottom:26px}.feature-card h3{font-family:var(--serif);font-size:25px;font-weight:500;line-height:1.25;color:var(--navy);margin:0 0 10px}.feature-card p{color:var(--muted);font-size:14px;margin:0 0 18px}.feature-card a{margin-top:auto;color:var(--teal);font-weight:650;text-decoration:none;font-size:14px}

/* recent publications */
.recent-list{border-top:1px solid var(--line)}.recent-item{display:grid;grid-template-columns:64px minmax(0,1fr) auto;gap:26px;align-items:start;padding:26px 0;border-bottom:1px solid var(--line)}.recent-no{font-family:var(--serif);font-size:26px;color:#9babb3}.recent-title{font-family:var(--serif);font-size:21px;line-height:1.35;color:var(--navy);font-weight:500;margin:0}.recent-meta{color:var(--muted);font-size:13px;margin-top:7px}.recent-open{white-space:nowrap;font-size:13px;color:var(--teal);text-decoration:none;font-weight:650;margin-top:4px}

/* software page */
.page-hero{background:linear-gradient(135deg,var(--navy-2),var(--navy));color:white;padding:84px 0 72px}.page-hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:end}.page-hero h1{font-family:var(--serif);font-size:clamp(48px,7vw,78px);font-weight:500;line-height:1;margin:0}.page-hero p{color:#d0dde2;max-width:630px;margin:20px 0 0}.page-hero-aside{justify-self:end;text-align:right;color:#b7c9d1;font-size:13px}.page-hero-aside strong{display:block;color:white;font-family:var(--serif);font-size:34px;font-weight:500}
.software-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.software-card{background:white;border:1px solid var(--line);border-radius:20px;padding:34px}.software-card.primary-software{background:linear-gradient(160deg,#edf5f4 0,#fff 70%);border-color:#c9dddd}.software-card h2{font-family:var(--serif);font-size:34px;font-weight:500;color:var(--navy);margin:4px 0 10px}.software-card h3{font-family:var(--serif);font-size:26px;font-weight:500;color:var(--navy);margin:0 0 8px}.software-card p{color:var(--muted)}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.tag{font-size:11px;letter-spacing:.06em;text-transform:uppercase;border:1px solid #cbdadd;background:#f7fbfa;color:#3c6970;padding:5px 9px;border-radius:999px}.software-stack{display:grid;gap:22px}
.license-note{margin-top:30px;background:var(--sand);border-radius:16px;padding:22px 26px;color:#5f645f;font-size:14px}

/* publications */
.pub-hero{background:linear-gradient(135deg,#0d2c40 0%,#123b4f 56%,#185361 100%);color:white;padding:78px 0 64px;position:relative;overflow:hidden}.pub-hero:after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(255,255,255,.12);border-radius:50%;right:-110px;top:-190px}.pub-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:end}.pub-hero h1{font-family:var(--serif);font-size:clamp(54px,7vw,82px);line-height:.95;font-weight:500;margin:0}.pub-hero p{max-width:650px;color:#c6d8dd;margin:20px 0 0}.pub-stats{display:grid;grid-template-columns:repeat(3,1fr);border-left:1px solid rgba(255,255,255,.15)}.pub-stat{padding-left:22px}.pub-stat strong{display:block;font-family:var(--serif);font-size:36px;font-weight:500}.pub-stat span{display:block;color:#aac3ca;font-size:11px;text-transform:uppercase;letter-spacing:.1em;margin-top:4px}
.pub-toolbar-wrap{position:sticky;top:76px;z-index:30;background:rgba(251,252,252,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.pub-toolbar{min-height:78px;display:flex;align-items:center;gap:14px}.search-box{flex:1;display:flex;align-items:center;gap:11px;border:1px solid var(--line-dark);background:white;border-radius:12px;padding:0 14px;min-height:46px}.search-box svg{width:18px;height:18px;fill:none;stroke:#778891;stroke-width:1.8}.search-box input{border:0;outline:0;background:transparent;width:100%;color:var(--ink)}.filter-select{display:flex;align-items:center;gap:9px;border:1px solid var(--line-dark);background:white;border-radius:12px;min-height:46px;padding:0 12px;color:var(--muted);font-size:13px}.filter-select select{border:0;outline:0;background:transparent;color:var(--navy);font-weight:650}.clear-btn{border:0;background:transparent;color:var(--teal);font-weight:650;cursor:pointer;font-size:13px}
.publications-shell{padding:48px 0 100px}.publications-grid{display:grid;grid-template-columns:145px minmax(0,1fr);gap:48px}.pub-sidebar{position:relative}.year-nav{position:sticky;top:176px;display:flex;flex-direction:column;gap:2px;max-height:calc(100vh - 205px);overflow:auto;padding-right:8px}.year-nav a{display:flex;justify-content:space-between;align-items:center;text-decoration:none;border-radius:8px;padding:7px 9px;color:#697985;font-size:12px}.year-nav a:hover,.year-nav a.active{background:var(--teal-soft);color:var(--teal);font-weight:700}.year-nav small{color:#9aabb2;font-size:10px}.pub-content-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;color:var(--muted);font-size:13px}.back-top{border:0;background:transparent;color:var(--teal);cursor:pointer;font-weight:650}
.year-section{scroll-margin-top:175px;margin-bottom:62px}.year-heading{display:flex;align-items:baseline;justify-content:space-between;border-bottom:2px solid var(--navy);padding-bottom:12px;margin-bottom:0}.year-heading h2{font-family:var(--serif);font-size:42px;font-weight:500;color:var(--navy);margin:0}.year-heading span{font-size:12px;color:var(--muted)}
.pub-card{display:grid;grid-template-columns:58px minmax(0,1fr) 90px;gap:22px;padding:27px 0;border-bottom:1px solid var(--line);transition:.15s ease}.pub-card:hover{background:linear-gradient(90deg,transparent,#f7faf9 12%,#f7faf9 88%,transparent)}.pub-number{font-family:var(--serif);color:#9aabb3;font-size:24px;line-height:1.35}.pub-authors{font-size:13px;color:#65747f;margin:0 0 7px;line-height:1.55}.pub-authors .me{color:var(--teal);font-weight:750}.pub-title{font-family:var(--serif);font-size:22px;line-height:1.34;font-weight:500;color:var(--navy);margin:0}.pub-details{font-size:13px;color:#687781;margin-top:8px}.pub-actions{text-align:right}.pub-actions a{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-dark);border-radius:999px;padding:7px 11px;font-size:11px;text-decoration:none;color:var(--navy);font-weight:700;white-space:nowrap}.pub-actions a:hover{border-color:var(--teal);color:var(--teal)}.pub-actions .doi{margin-top:6px;display:block;color:#83929a;font-size:10px;overflow-wrap:anywhere}
.no-results{border:1px dashed var(--line-dark);border-radius:18px;padding:45px;text-align:center;color:var(--muted);margin-top:20px}

/* footer */
.site-footer{background:#0d2535;color:#b9c7cd;padding:42px 0}.footer-grid{display:grid;grid-template-columns:1fr auto auto;gap:40px;align-items:center;font-size:12px}.footer-grid strong{font-family:var(--serif);font-size:18px;color:white;font-weight:500}.footer-links{display:flex;gap:18px}.footer-links a{text-decoration:none}.footer-copy{color:#83969f}

@media (max-width:900px){
  .site-nav{display:none;position:absolute;left:20px;right:20px;top:68px;background:white;border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.site-nav.open{display:flex}.site-nav a{padding:10px 8px}.nav-toggle{display:block}
  .hero-grid{grid-template-columns:1fr;gap:46px;min-height:auto;padding:64px 0}.hero-photo-wrap{justify-self:start}.hero-photo-frame{width:280px}.hero-photo-note{left:200px;bottom:24px;width:175px}
  .profile-grid{grid-template-columns:1fr;gap:50px}.profile-lead{position:static}.card-grid{grid-template-columns:1fr}.recent-item{grid-template-columns:54px 1fr}.recent-open{grid-column:2}
  .page-hero-grid,.pub-hero-grid,.software-grid{grid-template-columns:1fr}.page-hero-aside{justify-self:start;text-align:left}.pub-stats{border-left:0;border-top:1px solid rgba(255,255,255,.15);padding-top:22px}
  .publications-grid{grid-template-columns:1fr}.pub-sidebar{display:none}.pub-card{grid-template-columns:48px 1fr}.pub-actions{grid-column:2;text-align:left}.pub-actions .doi{display:inline;margin-left:10px}.footer-grid{grid-template-columns:1fr}.footer-links{flex-wrap:wrap}
}
@media (max-width:620px){
  .container,.nav-wrap{width:min(calc(100% - 28px),var(--max))}.section{padding:66px 0}.nav-wrap{min-height:68px}.brand-text small{display:none}
  .hero h1{font-size:52px}.hero .jp-name{font-size:15px}.hero-role{font-size:17px}.hero-photo-frame{width:235px}.hero-photo-note{display:none}
  .section-head{display:block}.section-head p{margin-top:14px}.profile-lead h2{font-size:40px}.fact-row{grid-template-columns:1fr;gap:4px}.timeline-item{grid-template-columns:1fr;gap:4px}
  .pub-toolbar-wrap{top:68px}.pub-toolbar{flex-wrap:wrap;padding:12px 0}.search-box{flex-basis:100%}.filter-select{flex:1}.pub-stats{grid-template-columns:1fr 1fr 1fr}.pub-stat{padding-left:10px}.pub-stat strong{font-size:28px}.pub-stat span{font-size:9px}.pub-card{grid-template-columns:38px 1fr;gap:12px}.pub-number{font-size:19px}.pub-title{font-size:19px}.year-heading h2{font-size:34px}.year-section{scroll-margin-top:145px}
}
@media print{.site-header,.pub-toolbar-wrap,.pub-sidebar,.back-top,.site-footer,.pub-actions{display:none!important}.publications-grid{display:block}.pub-card{break-inside:avoid}.pub-hero{background:none;color:black;padding:20px 0}.pub-hero p{color:#555}.pub-stats{color:#333;border:0}.year-section{margin-bottom:30px}}


/* bilingual / Japanese edition */
.lang-switch{display:flex;align-items:center;border:1px solid var(--line-dark);border-radius:999px;padding:3px;background:#fff;margin-left:-12px}
.lang-switch a{font-size:11px!important;line-height:1!important;padding:7px 9px!important;border-radius:999px;color:var(--muted)!important;font-weight:700;text-decoration:none;letter-spacing:.03em}
.lang-switch a.active{background:var(--navy);color:white!important}.lang-switch a:hover{color:var(--teal)!important}.lang-switch a.active:hover{color:white!important}
body[data-lang="ja"]{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic UI","Yu Gothic","Noto Sans JP","Meiryo",sans-serif;line-height:1.82}
body[data-lang="ja"] .hero h1,body[data-lang="ja"] .profile-lead h2,body[data-lang="ja"] .feature-card h3,body[data-lang="ja"] .recent-title,body[data-lang="ja"] .page-hero h1,body[data-lang="ja"] .pub-hero h1,body[data-lang="ja"] .year-heading h2,body[data-lang="ja"] .pub-title,body[data-lang="ja"] .software-card h2,body[data-lang="ja"] .software-card h3{font-family:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",Georgia,serif}
body[data-lang="ja"] .hero h1{letter-spacing:.04em}
body[data-lang="ja"] .hero-kicker{letter-spacing:.12em}
body[data-lang="ja"] .site-nav{gap:22px}
.pub-kind-badge{display:inline-flex;align-items:center;border-radius:999px;background:#f0ece2;color:#78643a;border:1px solid #e2d9c6;padding:3px 8px;font-size:10px;font-weight:750;letter-spacing:.04em;margin-bottom:8px}
.pub-card-japanese{background:linear-gradient(90deg,transparent,#fdfbf6 10%,#fdfbf6 90%,transparent)}
.pub-card-japanese:hover{background:linear-gradient(90deg,transparent,#faf6ec 10%,#faf6ec 90%,transparent)}
.jp-id{color:#a08145!important;font-size:17px!important;font-family:var(--sans)!important;font-weight:750;letter-spacing:.03em}
.japanese-recent{background:linear-gradient(90deg,transparent,#fdfbf7 12%,transparent)}
.ja-note{margin-top:22px;padding:18px 20px;border-left:3px solid #c6a96d;background:#fbf8f1;color:#655d4e;font-size:13px}
.ja-section-label{display:flex;align-items:center;gap:10px;color:#87704a;font-size:12px;font-weight:750;letter-spacing:.06em;margin:0 0 12px}
.ja-section-label:after{content:"";height:1px;background:#e5dccb;flex:1}
@media (max-width:900px){.lang-switch{margin:8px 0 2px;align-self:flex-start}.lang-switch a{padding:8px 12px!important}}

/* publication cover-image support */
.cover-inline-badge{display:inline-flex;align-items:center;vertical-align:middle;margin-left:10px;border-radius:999px;border:1px solid #c9d4d9;background:#f4f8f8;color:#40656a;padding:3px 8px;font-size:10px;font-weight:750;letter-spacing:.04em;font-family:var(--sans)}
.pub-card-with-cover{align-items:start}
.pub-main.has-cover{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:20px;align-items:start}
.pub-cover{margin:0;border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden;box-shadow:0 8px 22px rgba(18,50,71,.05)}
.pub-cover-link{display:block;text-decoration:none}
.pub-cover img{width:100%;aspect-ratio:4/5;object-fit:cover;background:#f2f5f6}
.pub-cover figcaption{display:flex;align-items:flex-start;gap:8px;padding:10px 12px;color:#566671;font-size:12px;line-height:1.55}
.cover-badge{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;border-radius:999px;background:var(--navy);color:#fff;padding:2px 7px;font-size:10px;font-weight:750;letter-spacing:.04em}
body[data-lang="ja"] .cover-inline-badge{background:#fbf7ee;border-color:#e4dac7;color:#81683b}
body[data-lang="ja"] .cover-badge{background:#8b6a34}
@media (max-width:900px){.pub-main.has-cover{grid-template-columns:1fr}.pub-cover{max-width:280px}}
@media (max-width:620px){.cover-inline-badge{display:inline-flex;margin-top:8px;margin-left:0}.pub-cover{max-width:100%}.pub-cover img{aspect-ratio:16/10}}