/* DKLab — dklab.in */
:root{
  --navy:#061f40; --navy-2:#0b2e57; --ink:#0a376b; --text:#3d5674; --muted:#5e7591;
  --blue:#2188f6; --blue-2:#1597ff; --blue-ink:#075eb8;
  --line:#dce7f2; --tint:#eef6fd; --white:#fff;
  --radius:10px; --shadow:0 4px 18px rgba(15,61,105,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font:16px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--text);background:var(--white);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{color:var(--ink);margin:0;line-height:1.2}
p{margin:0}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--blue-2);outline-offset:3px;border-radius:4px}
svg{width:1em;height:1em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.kicker{font-size:12px;font-weight:800;letter-spacing:2.5px;margin-bottom:10px}
.kicker.blue{color:var(--blue)}
.section-head{margin-bottom:36px}
.section-head.center{text-align:center}
.section-head h2{font-size:clamp(26px,3vw,34px);font-weight:800}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;border-radius:8px;padding:13px 26px;border:1px solid transparent;transition:background .2s,border-color .2s,transform .2s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--blue);color:#fff}
.btn.primary:hover{background:#0f73de}
.btn.secondary{border-color:#d6e8fb;color:#fff}
.btn.secondary:hover{background:#ffffff14}
.btn svg{font-size:18px}

/* Logo */
.logo{display:flex;flex-direction:column;line-height:1}
.logo-word{font-size:30px;letter-spacing:-1px}
.logo-dk{font-weight:800;color:var(--ink)}
.logo-lab{font-weight:500;color:var(--blue)}
.logo-tag{font-size:10px;font-weight:500;color:var(--muted);letter-spacing:.3px;margin-top:3px}
.logo-light .logo-dk{color:#fff}
.logo-light .logo-lab{color:var(--blue-2)}
.logo-light .logo-tag{color:#a9c1db}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid #e8eef6}
.nav-wrap{height:68px;display:flex;align-items:center;gap:28px}
.nav{display:flex;align-self:stretch;gap:28px;margin-left:auto}
.nav a{display:flex;align-items:center;font-size:14px;font-weight:600;color:var(--ink);position:relative}
.nav a:hover,.nav a.active{color:var(--blue)}
.nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--blue)}
.contact-pill{display:inline-flex;align-items:center;gap:8px;background:#07396c;color:#fff;padding:10px 18px;border-radius:999px;font-size:14px;font-weight:700;white-space:nowrap}
.contact-pill:hover{background:var(--blue)}
.menu{display:none;margin-left:auto;background:none;border:0;color:var(--ink);font-size:26px;padding:6px}

/* Hero */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.tagline{margin-top:28px;font-size:13px;font-weight:600;letter-spacing:5px;text-transform:uppercase;color:#bcd3ea}

/* Research */
.research-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.research-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 16px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.research-grid article:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(15,61,105,.1)}
.icon{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;margin:0 auto 16px;color:#fff;font-size:26px}
.c-blue{background:linear-gradient(135deg,#3b9bff,#1665d8)}
.c-purple{background:linear-gradient(135deg,#8b6cf0,#5b3fc4)}
.c-green{background:linear-gradient(135deg,#34b86e,#1d8048)}
.c-amber{background:linear-gradient(135deg,#ffbe3d,#f39200)}
.c-red{background:linear-gradient(135deg,#ff6060,#d93636)}
.c-teal{background:linear-gradient(135deg,#2bb5d6,#0e7fa3)}
.research-grid h3{font-size:15px;font-weight:700;margin-bottom:10px}
.research-grid p{font-size:13px;line-height:1.55;color:var(--muted)}

/* Projects */
.tint{background:var(--tint)}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.project-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;display:grid;grid-template-columns:94px 1fr;gap:16px;align-items:start;box-shadow:var(--shadow)}
.project-card>img,.thumb{width:94px;height:92px;border-radius:6px;object-fit:cover}
.thumb{display:block;background:radial-gradient(circle at 40% 40%,#0d3b78,#041530)}
.thumb svg{width:100%;height:100%;stroke:none}
.pill{display:inline-block;font-size:11px;font-weight:700;line-height:1;padding:5px 9px;border-radius:6px}
.pill-green{background:#ddf6e9;color:#23805a}.pill-red{background:#ffe1e1;color:#c14a4a}.pill-purple{background:#ece5ff;color:#7354c6}
.pill-blue{background:#dcecff;color:#246db5}.pill-amber{background:#fff0d6;color:#a8650a}.pill-grey{background:#eef2f6;color:#566b82}
.project-body h3{font-size:17px;font-weight:700;margin:10px 0 6px}
.project-body p{font-size:14px;line-height:1.55;color:var(--muted)}
.stack{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.stack li{font-size:12px;color:#526d8b;border:1px solid var(--line);border-radius:5px;padding:2px 8px}
.join-card{grid-template-columns:1fr;background:linear-gradient(135deg,#0b2e57,#061f40);border-color:transparent;padding:22px}
.join-card h3{color:#fff}.join-card p{color:#c6d8ec}
.link-arrow{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--blue-2)}
.link-arrow:hover{text-decoration:underline}

/* About */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px 56px;align-items:center}
.mission h2{font-size:clamp(26px,3vw,34px);font-weight:800;margin-bottom:14px}
.mission .lead{font-size:19px;line-height:1.55;color:var(--ink);margin-bottom:16px}
.mission p+p{margin-top:12px}
.mission p:last-child{font-size:14px;color:var(--muted)}
.campus{margin:0;position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.campus img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}
.campus figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 16px 12px;background:linear-gradient(transparent,rgba(2,28,57,.9));color:#fff;font-size:13px;font-weight:600}
.stats{grid-column:1/-1;display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);padding-top:32px}
.stats div{text-align:center}
.stats div+div{border-left:1px solid var(--line)}
.stats strong{display:block;font-size:clamp(28px,3vw,38px);font-weight:800;color:var(--blue);line-height:1.15}
.stats span{font-size:13px;color:var(--muted)}

/* Teaching */
.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.course-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;border-top:3px solid var(--blue);box-shadow:var(--shadow)}
.level{font-size:11px;font-weight:800;letter-spacing:1.5px;color:var(--blue)}
.course-grid h3{font-size:18px;font-weight:700;margin:10px 0 8px}
.course-grid p{font-size:14px;color:var(--muted)}

/* Contact */
.contact{background:var(--navy);color:#d8e8f8;padding:72px 0}
.contact-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.contact .kicker{color:var(--blue-2)}
.contact h2{color:#fff;font-size:clamp(28px,3.4vw,40px);font-weight:800;margin-bottom:12px}
.contact h2 span{color:var(--blue-2)}
.contact-card{background:#ffffff0d;border:1px solid #ffffff1f;border-radius:var(--radius);padding:28px}
.contact-card address{font-style:normal;font-size:14px;line-height:1.7;color:#a9c1db;margin-top:20px}
.email-link{display:inline-block;font-size:clamp(17px,2vw,20px);font-weight:700;color:#fff;border-bottom:2px solid var(--blue-2);padding-bottom:4px;word-break:break-all}

/* Footer */
.site-footer{background:var(--navy-2);color:#a9c1db;padding:28px 0}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.site-footer .logo-word{font-size:24px}
.footer-nav{display:flex;gap:22px;font-size:14px}
.footer-nav a:hover{color:#fff}
.copyright{font-size:13px}

/* Responsive */
@media (max-width:1100px){
  .research-grid{grid-template-columns:repeat(3,1fr)}
  .project-grid{grid-template-columns:repeat(2,1fr)}
  .nav{gap:20px}
}
@media (max-width:860px){
  .menu{display:block}
  .contact-pill{display:none}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;gap:0;background:#fff;padding:8px 24px 16px;box-shadow:0 12px 24px rgba(0,0,0,.08)}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid #eef2f7}
  .nav a.active:after{display:none}
  .about-grid,.contact-inner{grid-template-columns:1fr}
  .course-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(3,1fr);row-gap:24px}
  .stats div:nth-child(4){border-left:0}
}
@media (max-width:600px){
  .section{padding:56px 0}
  .wrap{padding:0 16px}
  .tagline{letter-spacing:3px;font-size:11px}
  .research-grid{grid-template-columns:1fr 1fr;gap:12px}
  .research-grid article{padding:20px 12px}
  .project-grid{grid-template-columns:1fr}
  .project-card{grid-template-columns:72px 1fr;gap:12px}
  .project-card>img,.thumb{width:72px;height:72px}
  .project-card.join-card{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .stats div{border-left:0!important}
  .stats div:last-child{grid-column:1/-1}
  .footer-inner{flex-direction:column;align-items:flex-start}
  .footer-nav{flex-wrap:wrap;gap:14px}
}
@media (max-width:380px){.research-grid{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* ===================================================================== v3 additions (dynamic site) */
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;z-index:100;border-radius:6px}
.skip:focus{left:8px}
.announce{background:var(--blue);color:#fff;text-align:center;font-size:14px;font-weight:600;padding:9px 16px}
.announce a{color:#fff}
.nav-mobile-only{display:none!important}
@media (max-width:1240px){.nav{gap:18px}.nav a{font-size:13.5px}.nav-wrap{gap:20px}}
.muted-sm{font-size:14px;color:var(--muted)}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.opt{font-weight:400;color:var(--muted);font-size:.9em}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn.small{padding:9px 16px;font-size:14px}
.btn.block{width:100%;justify-content:center}
.section-head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.center{text-align:center}
.empty{padding:40px 24px;text-align:center;color:var(--muted);background:var(--tint);border:1px dashed var(--line);border-radius:var(--radius)}
.empty.small{padding:20px}

/* flashes */
.flash-stack{margin-top:18px;display:grid;gap:8px}
.flash{padding:12px 16px;border-radius:8px;font-size:15px;border:1px solid}
.flash-success{background:#e7f8ef;border-color:#b7e6cb;color:#17633f}
.flash-error{background:#fdecec;border-color:#f5c2c2;color:#9b2c2c}
.flash-info{background:#eaf3fe;border-color:#c5dcf7;color:#1e4f86}

/* forms (light) */
label{display:block;font-size:14px;font-weight:600;color:var(--ink)}
input:not([type=checkbox]):not([type=radio]):not([type=file]),select,textarea{display:block;width:100%;margin-top:6px;font:inherit;font-size:15px;color:#13253d;background:#fff;border:1px solid #cfdceb;border-radius:8px;padding:11px 13px;transition:border-color .15s,box-shadow .15s}
input[type=file]{display:block;margin-top:8px;font-size:14px}
textarea{resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(33,136,246,.18)}
input:disabled{background:#f3f6f9;color:#6b7f95}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field-row.three{grid-template-columns:1fr 1fr 1fr}
.stack-form{display:grid;gap:16px}

/* home: updates */
.updates-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.news-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.news-list li{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.news-list time{font-size:13px;font-weight:600;color:var(--blue)}
.news-list a{font-weight:600;color:var(--ink)}
.news-list a:hover{color:var(--blue)}
.pub-mini{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.pub-mini li{display:grid;grid-template-columns:56px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.pub-year{font-weight:800;color:var(--blue);font-size:15px}
.pub-mini strong{display:block;color:var(--ink);font-size:15px;line-height:1.45}
.pub-mini small{color:var(--muted);font-size:13px;font-style:italic}
.mission .link-arrow{margin-top:18px}
.course-grid a{color:var(--blue);font-weight:600}

/* gallery cards */
.album-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.album-grid.big{grid-template-columns:repeat(3,1fr)}
.album-card{position:relative;display:block;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:#0b2e57;box-shadow:var(--shadow)}
.album-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.album-card:hover img{transform:scale(1.05)}
.album-card span{position:absolute;left:0;right:0;bottom:0;padding:36px 16px 14px;background:linear-gradient(transparent,rgba(2,22,46,.88));color:#fff}
.album-card strong{display:block;font-size:16px}
.album-card small{font-size:13px;color:#c8d9ec}
.photo-grid{columns:4 240px;column-gap:14px}
.photo{display:block;break-inside:avoid;margin-bottom:14px;border-radius:8px;overflow:hidden;position:relative;background:#e9eff6}
.photo img{width:100%;height:auto;transition:opacity .2s}
.photo:hover img{opacity:.9}
.photo span{position:absolute;left:0;right:0;bottom:0;padding:24px 10px 8px;font-size:13px;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.7));opacity:0;transition:opacity .2s}
.photo:hover span{opacity:1}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(3,12,26,.94);display:flex;align-items:center;justify-content:center}
.lightbox[hidden]{display:none}
.lightbox figure{margin:0;max-width:92vw;max-height:88vh;text-align:center}
.lightbox img{max-width:92vw;max-height:80vh;width:auto;height:auto;margin:auto;border-radius:6px}
.lightbox figcaption{color:#dfe9f5;margin-top:12px;font-size:15px}
.lightbox button{position:absolute;background:rgba(255,255,255,.1);border:0;color:#fff;font-size:34px;width:52px;height:52px;border-radius:50%;line-height:1}
.lightbox button:hover{background:rgba(255,255,255,.2)}
.lb-close{top:18px;right:18px}.lb-prev{left:18px;top:50%;transform:translateY(-50%)}.lb-next{right:18px;top:50%;transform:translateY(-50%)}

/* contact form (dark section) */
.contact address{font-style:normal;font-size:14px;line-height:1.7;color:#a9c1db;margin-top:22px}
.contact-inner{align-items:start}
.contact-form{background:#ffffff0d;border:1px solid #ffffff1f;border-radius:var(--radius);padding:26px;display:grid;gap:14px}
.contact-form label{color:#d8e8f8}
.contact-form input,.contact-form select,.contact-form textarea{background:#0b2a50!important;border-color:#2a4d77!important;color:#fff!important}
.contact-form select option{background:#0b2a50}
.contact-form .btn{justify-self:start}
.form-note{font-size:12px;color:#8fa9c6}

/* footer */
.footer-right{display:grid;gap:6px;justify-items:end;text-align:right}
.social{display:flex;gap:16px;font-size:13px}
.social a:hover{color:#fff}
.visitors{display:flex;align-items:center;gap:6px;font-size:12px;color:#8fa9c6}

/* page hero */
.page-hero{background:radial-gradient(circle at 85% 0,#0d4a8f 0,#061f40 60%);color:#d8e8f8;padding:64px 0 56px}
.page-hero.slim{padding:44px 0 40px}
.page-hero .kicker{color:var(--blue-2)}
.page-hero h1{color:#fff;font-size:clamp(30px,4vw,46px);font-weight:800;letter-spacing:-.5px;margin-bottom:12px}
.page-hero p{max-width:640px;font-size:17px}
.page-hero a{color:#fff;text-decoration:underline}
.back{display:inline-block;color:#a9c1db!important;text-decoration:none!important;font-size:14px;margin-bottom:14px}
.back.dark{color:var(--blue)!important;margin-bottom:18px}
.narrow{max-width:820px}
.prose{font-size:16.5px;line-height:1.75;color:#344b66}
.prose p+p{margin-top:14px}
.prose a{color:var(--blue);text-decoration:underline}
.narrow-left{max-width:760px;margin-bottom:28px}

/* publications */
.pubs-layout{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start}
.filters{position:sticky;top:90px;display:grid;gap:12px}
.filters h3{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);margin-top:14px}
.search-box{position:relative}
.search-box input{margin:0;padding-right:44px}
.search-box button{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--muted);font-size:20px;padding:8px}
.facet{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.facet a{display:flex;justify-content:space-between;padding:8px 12px;border-radius:7px;font-size:14px;color:var(--ink)}
.facet a span{color:var(--muted);font-size:13px}
.facet a:hover{background:var(--tint)}
.facet a.on{background:#dcecff;color:#1259a8;font-weight:700}
.year-chips{display:flex;flex-wrap:wrap;gap:6px}
.year-chips a{font-size:13px;padding:4px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink)}
.year-chips a.on,.year-chips a:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.filters .btn{margin-top:14px;justify-self:start}
.result-note{font-size:14px;color:var(--muted);margin-bottom:8px}
.result-note a{color:var(--blue)}
.year-head{font-size:22px;font-weight:800;color:var(--blue);margin:28px 0 6px;padding-bottom:8px;border-bottom:2px solid #dcecff}
.year-head:first-of-type{margin-top:0}
.pub-list{list-style:none;margin:0;padding:0}
.pub{padding:18px 0;border-bottom:1px solid var(--line)}
.pub-meta{display:flex;gap:6px;margin-bottom:8px}
.pub h3{font-size:17px;line-height:1.45;font-weight:700;margin-bottom:6px}
.pub .authors{font-size:14.5px;color:#3d5674}
.pub .authors strong{color:var(--ink)}
.pub .venue{font-size:14px;color:var(--muted)}
.pub-links{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px;font-size:13.5px;font-weight:600}
.pub-links a{color:var(--blue)}
.pub-links a:hover{text-decoration:underline}
.pub-links details{flex-basis:100%;font-weight:400}
.pub-links summary{cursor:pointer;color:var(--blue);font-weight:600;display:inline}
.pub-links details p{margin-top:8px;font-size:14.5px;color:#3d5674;line-height:1.65;background:var(--tint);padding:14px;border-radius:8px}

/* people */
.pi-card{display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:32px;box-shadow:var(--shadow)}
.pi-avatar{width:110px;height:110px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#1597ff,#07396c);color:#fff;font-size:38px;font-weight:800}
.pi-card h2{font-size:28px;font-weight:800}
.pi-role{color:var(--ink);font-weight:600;margin:4px 0 10px}
.pi-links{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:14px;font-weight:700}
.pi-links a{color:var(--blue)}
.pi-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;border-left:1px solid var(--line);padding-left:32px}
.pi-stats strong{display:block;font-size:24px;font-weight:800;color:var(--blue);line-height:1.1}
.pi-stats span{font-size:12px;color:var(--muted)}
.pi-stats div:last-child{grid-column:1/-1}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:40px 0 8px}
.tabs a{font-size:14px;font-weight:600;padding:8px 14px;border:1px solid var(--line);border-radius:999px;color:var(--ink);background:#fff}
.tabs a span{color:var(--muted);font-weight:500;margin-left:4px}
.tabs a:hover{border-color:var(--blue);color:var(--blue)}
.people-group{padding-top:36px;scroll-margin-top:80px}
.people-group>h2{font-size:24px;font-weight:800;margin-bottom:18px}
.year-sub{font-size:14px;font-weight:700;color:var(--blue);margin:20px 0 8px;letter-spacing:.5px}
.people-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.prow{display:grid;grid-template-columns:1fr 1.6fr 1fr;gap:16px;padding:12px 18px;font-size:14.5px;border-bottom:1px solid #edf2f7}
.prow:last-child{border-bottom:0}
.prow:nth-child(even){background:#fafcfe}
.prow-name{font-weight:700;color:var(--ink)}
.prow-name a:hover{color:var(--blue)}
.prow-name small{display:block;font-weight:400;color:var(--muted);font-size:12.5px}
.prow-title{color:#3d5674}
.prow-now{color:var(--muted);font-size:13.5px}
.people-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.person{display:grid;grid-template-columns:64px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.person img,.avatar{width:64px;height:64px;border-radius:50%;object-fit:cover}
.avatar{display:grid;place-items:center;background:#dcecff;color:#1259a8;font-weight:800;font-size:20px}
.person h3{font-size:17px;font-weight:700}
.person h3 a:hover{color:var(--blue)}
.person .years{font-size:13px;color:var(--muted);margin:2px 0 6px}
.person .thesis{font-size:14.5px;color:#3d5674;line-height:1.5}
.person .now{display:flex;gap:6px;align-items:center;margin-top:8px;font-size:13.5px;font-weight:600;color:#23805a}
.cta-band{margin-top:56px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;background:linear-gradient(135deg,#0b2e57,#061f40);color:#c6d8ec;border-radius:14px;padding:30px 34px}
.cta-band h3{color:#fff;font-size:22px;margin-bottom:4px}

/* news */
.news-card{padding:26px 0;border-bottom:1px solid var(--line)}
.news-card time{font-size:13px;font-weight:700;color:var(--blue)}
.news-card h2{font-size:22px;font-weight:700;margin:6px 0 10px}
.news-card h2 a:hover{color:var(--blue)}
.news-card .excerpt{color:#3d5674}
.news-card .link-arrow{margin-top:8px}
.pager{display:flex;justify-content:center;align-items:center;gap:24px;margin-top:32px;font-size:14px;color:var(--muted)}
.pager a{color:var(--blue);font-weight:700}

/* resources */
.res-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.res-card{display:grid;grid-template-columns:52px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.res-icon{width:52px;height:60px;border-radius:8px;background:linear-gradient(135deg,#e8f2ff,#cfe3fb);color:#1259a8;font-size:12px;font-weight:800;display:grid;place-items:center}
.res-card h3{font-size:16.5px;font-weight:700;margin:8px 0 4px}
.res-card p{font-size:14px;color:var(--muted)}
.res-links{display:flex;gap:16px;margin-top:10px;font-size:14px;font-weight:700}
.res-links a{color:var(--blue)}
.res-links small{color:var(--muted);font-weight:500}

/* error */
.error-page{padding:110px 0}
.err-code{font-size:84px;font-weight:800;color:#dcecff;line-height:1}
.error-page h1{font-size:32px;margin:8px 0 12px}
.actions.center{justify-content:center}

/* auth */
.auth-page{background:var(--tint)}
.auth-wrap{padding:64px 16px 80px;display:grid;place-items:center}
.auth-card{width:100%;max-width:440px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px;box-shadow:0 10px 40px rgba(15,61,105,.08)}
.auth-card.wide{max-width:720px}
.auth-card h1{font-size:26px;font-weight:800}
.auth-card .sub{color:var(--muted);margin:6px 0 24px;font-size:15px}
.auth-card form{display:grid;gap:16px}
.auth-links{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:20px;font-size:14px}
.auth-links a{color:var(--blue);font-weight:600}

/* portal */
.app-page{background:#f6f9fc}
.app-head{background:radial-gradient(circle at 85% 0,#0d4a8f 0,#061f40 60%);color:#fff;padding:34px 0 0}
.app-head-inner{display:flex;flex-direction:column;gap:18px}
.app-head .kicker{color:var(--blue-2)}
.app-head h1{color:#fff;font-size:clamp(24px,3vw,32px);font-weight:800}
.app-tabs{display:flex;gap:4px;flex-wrap:wrap;align-items:flex-end}
.app-tabs a,.app-tabs button{padding:11px 18px;border-radius:8px 8px 0 0;font-size:14px;font-weight:600;color:#c6d8ec;background:none;border:0}
.app-tabs a:hover,.app-tabs button:hover{color:#fff}
.app-tabs a.on{background:#f6f9fc;color:var(--ink)}
.app-tabs form{margin-left:auto}
.app-body{padding-top:36px}
.h-sec{font-size:18px;font-weight:800;margin:4px 0 14px}
* + .h-sec{margin-top:30px}
.dash-grid{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:start}
.task-card{display:flex;justify-content:space-between;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin-bottom:12px;box-shadow:var(--shadow);transition:border-color .15s}
.task-card:hover{border-color:var(--blue)}
.task-card h3{font-size:16.5px;font-weight:700}
.due{font-size:13.5px;color:var(--muted);margin-top:2px}
.due.over{color:#b4501b}
.status{display:inline-block;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;white-space:nowrap;text-transform:capitalize}
.st-todo{background:#fff0d6;color:#a8650a}.st-submitted{background:#dcecff;color:#1259a8}.st-reviewed{background:#ece5ff;color:#5b3fc4}
.st-revision{background:#ffe7d6;color:#b4501b}.st-accepted{background:#ddf6e9;color:#23805a}
.tag-late{font-size:11px;font-weight:700;color:#b4501b;background:#ffe7d6;padding:1px 6px;border-radius:4px}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted);background:#f6f9fc;padding:10px 14px;border-bottom:1px solid var(--line)}
.tbl td{padding:12px 14px;border-bottom:1px solid #edf2f7;vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl a{color:var(--blue);font-weight:600}
.clip{max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-cards{display:grid;gap:12px}
.side-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.side-card strong{display:block;font-size:20px;color:var(--ink)}
.side-card span{font-size:13.5px;color:var(--muted)}
a.side-card:hover{border-color:var(--blue)}
.side-card.info strong{font-size:16px}
.task-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.panel .prose{margin:14px 0}
.sub-status{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13.5px;color:var(--muted);margin-bottom:12px}
.panel p a{color:var(--blue);font-weight:600}
.feedback{background:#f4f0ff;border-left:3px solid #7354c6;padding:14px 16px;border-radius:6px;margin:14px 0;font-size:14.5px}
.feedback strong{display:block;color:#5b3fc4;margin-bottom:6px}

@media (max-width:1000px){
  .updates-grid,.pubs-layout,.dash-grid,.task-layout{grid-template-columns:1fr}
  .filters{position:static}
  .album-grid{grid-template-columns:repeat(2,1fr)}
  .album-grid.big{grid-template-columns:repeat(2,1fr)}
  .pi-card{grid-template-columns:auto 1fr}
  .pi-stats{grid-column:1/-1;border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:20px;grid-template-columns:repeat(5,1fr)}
  .pi-stats div:last-child{grid-column:auto}
}
@media (max-width:860px){
  .nav-mobile-only{display:flex!important;color:var(--blue)!important}
  .people-cards,.res-grid{grid-template-columns:1fr}
  .prow{grid-template-columns:1fr;gap:2px}
}
@media (max-width:600px){
  .field-row,.field-row.three{grid-template-columns:1fr}
  .album-grid,.album-grid.big{grid-template-columns:1fr 1fr;gap:10px}
  .pi-card{grid-template-columns:1fr;padding:22px;gap:18px}
  .pi-avatar{width:80px;height:80px;font-size:28px}
  .pi-stats{grid-template-columns:1fr 1fr}
  .footer-right{justify-items:start;text-align:left}
  .news-list li{grid-template-columns:1fr;gap:2px}
  .auth-card{padding:24px}
  .app-tabs form{margin-left:0}
  .photo-grid{columns:2 140px;column-gap:8px}
  .photo{margin-bottom:8px}
  .lightbox button.lb-prev,.lightbox button.lb-next{top:auto;bottom:18px;transform:none}
}

/* ===================================================================== intro hero (campus theme) */
.hero{position:relative;isolation:isolate;background:#edf3f8;color:var(--ink);overflow:hidden}
.hero-image{position:absolute;inset:0 0 64px 30%;z-index:-2;background:url(../assets/campus-hero.jpg) center/cover no-repeat}
.hero:before{content:"";position:absolute;inset:0 0 64px;z-index:-1;
  background:linear-gradient(90deg,#edf3f8 0%,#edf3f8 28%,rgba(237,243,248,.95) 40%,rgba(237,243,248,.55) 58%,rgba(237,243,248,.05) 82%)}
.hero-inner{position:relative;min-height:600px;padding-bottom:64px;display:flex;align-items:center}
.hero-copy{max-width:640px;padding:64px 0 72px}
.hero .kicker{color:#375269}
.hero h1{font-size:clamp(52px,6.6vw,96px);line-height:1.02;font-weight:800;letter-spacing:-3.5px;color:var(--ink);margin-bottom:24px}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero-lead{font-size:18px;line-height:1.7;color:#425568;max-width:460px}
.hero .actions{align-items:center;gap:26px;margin-top:30px}
.text-link{font-size:15px;font-weight:700;color:var(--ink);border-bottom:2px solid currentColor;padding-bottom:3px}
.text-link:hover{color:var(--blue)}
.hero-caption{position:absolute;right:24px;bottom:96px;font-size:13px;line-height:1.5;color:#fff;background:rgba(6,31,64,.72);backdrop-filter:blur(4px);padding:12px 16px;border-radius:8px}
.hero-caption strong{display:block}
.hero-band{position:absolute;left:0;right:0;bottom:0;height:64px;background:var(--navy);color:#cfe0f2}
.hero-band .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:12px;font-weight:700;letter-spacing:2.5px}
.hero-band span:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--blue-2);margin-right:10px;vertical-align:1px}
.about-head h2 span{display:block;color:#8e9dad}
.mission .lead{font-size:20px}
@media (max-width:1000px){
  .hero-image{left:12%}
  .hero:before{background:linear-gradient(90deg,#edf3f8 0%,rgba(237,243,248,.92) 45%,rgba(237,243,248,.45) 80%)}
  .hero h1{letter-spacing:-2.5px}
  .hero-caption{display:none}
}
@media (max-width:600px){
  .hero-inner{min-height:0;padding-bottom:84px}
  .hero-image{inset:0 0 84px 0}
  .hero:before{bottom:84px;background:linear-gradient(180deg,rgba(237,243,248,.96),rgba(237,243,248,.86))}
  .hero-copy{padding:44px 0 48px}
  .hero h1{font-size:54px;letter-spacing:-2px}
  .hero-lead{font-size:16px}
  .hero .actions{gap:18px}
  .hero-band{height:84px}
  .hero-band .wrap{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px;align-content:center;font-size:10px;letter-spacing:1.2px}
}
.profile-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px;box-shadow:var(--shadow);text-align:center}
.profile-card .pi-avatar{margin:0 auto 14px;width:96px;height:96px;font-size:34px}
.profile-card h3{font-size:22px;font-weight:800}
.profile-card>p{color:var(--muted);font-size:14.5px;margin:4px 0 18px}
.profile-links{list-style:none;margin:0;padding:0;text-align:left;border-top:1px solid var(--line)}
.profile-links a{display:flex;justify-content:space-between;padding:12px 4px;border-bottom:1px solid var(--line);font-weight:600;font-size:15px;color:var(--ink)}
.profile-links a:hover{color:var(--blue)}
.cites{color:var(--muted);font-weight:600}
.cite-stats{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 26px;margin-top:20px;font-size:15px;color:#c6d8ec}
.cite-stats strong{font-size:24px;color:#fff;margin-right:4px}
.cite-stats small{font-size:12px;color:#8fa9c6}