:root{
  --navy:#07294d;        /* Drexel navy */
  --navy-2:#0b3a6b;
  --gold:#ffc600;        /* Drexel gold */
  --ink:#1a1d21;
  --muted:#5b6470;
  --line:#e6e9ee;
  --bg:#ffffff;
  --bg-soft:#f6f8fb;
  --link:#0b66c3;
  --maxw:980px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--bg);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}

/* ---- header / nav ---- */
.site-header{background:var(--navy);color:#fff}
.site-header .bar{max-width:var(--maxw);margin:0 auto;padding:.9rem 1.1rem;
  display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.brand{display:flex;flex-direction:column;line-height:1.15}
.brand a{color:#fff}
.brand .name{font-weight:700;font-size:1.12rem;letter-spacing:.2px}
.brand .tag{color:#bcd0e8;font-size:.8rem;font-weight:400}
nav.main{margin-left:auto;display:flex;gap:.25rem;flex-wrap:wrap}
nav.main a{color:#dce6f2;padding:.4rem .7rem;border-radius:6px;font-size:.95rem}
nav.main a:hover{background:var(--navy-2);color:#fff;text-decoration:none}
nav.main a.active{color:var(--navy);background:var(--gold);font-weight:600}

/* ---- page ---- */
main{max-width:var(--maxw);margin:0 auto;padding:2rem 1.1rem 3rem}
.page-title{font-size:1.8rem;margin:.2rem 0 1.2rem;color:var(--navy);
  border-bottom:3px solid var(--gold);padding-bottom:.4rem;display:inline-block}
h2{color:var(--navy);font-size:1.3rem;margin-top:2rem}
h3{font-size:1.05rem;margin:1.3rem 0 .3rem}
p{margin:.6rem 0}
.lead{font-size:1.12rem;color:#33404e}
.muted{color:var(--muted)}

/* ---- hero (home) ---- */
.hero{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;
  padding:1.8rem;margin-bottom:1.5rem}
.hero h1{margin:.1rem 0 .4rem;color:var(--navy);font-size:2rem}
.hero .who{color:var(--muted);font-size:1rem;margin-bottom:.8rem}
.btn-row{margin-top:1.1rem;display:flex;gap:.6rem;flex-wrap:wrap}
.btn{display:inline-block;background:var(--navy);color:#fff;padding:.55rem 1rem;
  border-radius:8px;font-weight:600;font-size:.95rem}
.btn:hover{background:var(--navy-2);text-decoration:none}
.btn.alt{background:var(--gold);color:var(--navy)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-top:1.2rem}
.card{border:1px solid var(--line);border-radius:12px;padding:1.1rem;background:#fff}
.card h3{margin-top:0;color:var(--navy)}

/* ---- people ---- */
.people-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1.3rem;margin:1rem 0 1.5rem}
.person{text-align:center}
.person .photo,.person .ph{width:120px;height:120px;border-radius:50%;object-fit:cover;
  margin:0 auto .5rem;display:block;border:3px solid var(--bg-soft);box-shadow:0 1px 4px rgba(7,41,77,.12)}
.person .ph{background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:2rem;font-weight:600}
.person .pname{font-weight:600;line-height:1.2}
.person .prole{font-size:.85rem;color:var(--muted)}
.person a{font-size:.82rem}
.person-cv{font-size:.82rem;margin-top:.15rem;font-weight:600}
.alumni-list{columns:2;column-gap:2rem;margin:.5rem 0}
.alumni-list li{margin:.15rem 0}
@media(max-width:560px){.alumni-list{columns:1}}

/* ---- research figures ---- */
.research-area{border-top:1px solid var(--line);padding-top:.6rem}
.fig{float:right;width:230px;margin:0 0 1rem 1.4rem;border:1px solid var(--line);
  border-radius:10px;padding:.4rem;background:#fff}
.fig img{border-radius:6px;display:block}
.fig figcaption{font-size:.78rem;color:var(--muted);text-align:center;margin-top:.3rem}
@media(max-width:560px){.fig{float:none;width:100%;margin:1rem 0}}

/* ---- news ---- */
.news-item{border-left:3px solid var(--gold);padding:.2rem 0 .2rem 1rem;margin:1rem 0}
.news-item .date{font-size:.82rem;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.4px}

/* ---- publications ---- */
.pub-nav{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(4px);
  padding:.6rem 0;border-bottom:1px solid var(--line);font-size:.86rem;margin-bottom:.5rem;z-index:5}
.pub-nav a{margin-right:.5rem;color:var(--link)}
.pub-year{color:var(--navy);font-size:1.15rem;border-bottom:2px solid var(--navy);
  padding-bottom:.2rem;margin-top:1.6rem}
.pub-year .cnt{font-size:.72rem;color:var(--muted);font-weight:400}
.pub{margin:.55rem 0;padding-left:1.3rem;text-indent:-1.3rem}
.pub .ti{font-weight:600}
.pub .au{color:#33404e}
.pub-count{color:var(--muted);font-size:.95rem}
.pub-links{font-size:.82rem;white-space:nowrap}
.pub-links a{color:var(--muted)}
.pub-links a:hover{color:var(--link)}

/* ---- software ---- */
.sw-card h3{display:flex;align-items:baseline;justify-content:space-between;gap:.5rem}
.sw-ver{font-size:.75rem;font-weight:600;color:#fff;background:var(--navy);
  border-radius:10px;padding:.05rem .5rem;white-space:nowrap}
.sw-pip{background:#0d1117;color:#e6edf3;border-radius:7px;padding:.45rem .6rem;
  font-size:.82rem;overflow-x:auto;margin:.6rem 0 .5rem}
.sw-links{font-size:.85rem;color:var(--muted)}
.sw-upd{color:var(--muted);font-size:.78rem;margin-left:.3rem}

/* ---- CV ---- */
.cv-head{display:flex;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;
  background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;
  padding:1.1rem 1.3rem;margin-bottom:1rem}
.cv-name{font-weight:700;color:var(--navy);font-size:1.2rem}
.cv-contact{color:var(--muted);font-size:.9rem;line-height:1.5;margin-top:.3rem}
.cv-actions{text-align:right}
.cv-toc{flex-wrap:wrap;line-height:1.8}
.cv-h2{color:var(--navy);font-size:1.25rem;border-bottom:2px solid var(--gold);
  padding-bottom:.25rem;margin-top:2rem}
.cv-h2 + *,.cv-h2 ~ h3{scroll-margin-top:1rem}
.cv-list{margin:.4rem 0 .6rem;padding-left:1.2rem}
.cv-list li{margin:.3rem 0;line-height:1.45}
.cv-sub{color:var(--muted);font-size:.9rem}
.cv-pubs{margin:.4rem 0;padding-left:1.6rem;font-size:.93rem}
.cv-pubs li{margin:.3rem 0}
.cv-h2 ~ h3,h3.cv-group{color:#33404e;font-size:1rem;margin:1rem 0 .2rem}

/* ---- footer ---- */
footer{border-top:1px solid var(--line);background:var(--bg-soft)}
footer .inner{max-width:var(--maxw);margin:0 auto;padding:1.4rem 1.1rem;
  color:var(--muted);font-size:.85rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap}

/* draft banner */
.draft{background:#fff8e1;border:1px solid #f3d98a;color:#7a5b00;
  padding:.5rem .8rem;border-radius:8px;font-size:.85rem;margin-bottom:1.2rem}