:root{
  --ink:#000; --text:#111; --muted:#444; --link:#1d4ed8; --accent:#0f3b70;
  --line:#e6e4df; --bg:#fff; --rule:#cfd6e0;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--serif);color:var(--text);background:var(--bg);line-height:1.6;font-size:17.5px;overflow-x:hidden}
a{color:var(--link);text-decoration:none;transition:color .15s}
a:hover{text-decoration:underline;text-underline-offset:3px}
.wrap{max-width:920px;margin:0 auto;padding:0 28px}

/* nav */
nav{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
nav .brand{font-family:var(--serif);font-size:1.2rem;font-weight:600;color:var(--ink);letter-spacing:.01em}
nav .brand:hover{text-decoration:none;color:var(--accent)}
nav ul{list-style:none;display:flex;gap:30px;margin:0;padding:0}
nav li a{font-family:var(--sans);font-size:.92rem;font-weight:500;color:#333;padding:6px 0;border-bottom:2px solid transparent;letter-spacing:.01em}
nav li a:hover{color:var(--ink);text-decoration:none}
nav li a.active{color:var(--ink);border-bottom-color:var(--accent)}

main{padding:56px 0 64px}
h1{font-size:2.6rem;font-weight:600;margin:0 0 14px;color:var(--ink);line-height:1.12;letter-spacing:-.01em;overflow-wrap:anywhere}
h2{font-size:1.45rem;font-weight:600;margin:0 0 22px;color:var(--ink);letter-spacing:-.005em}
h2 span{display:inline-block;padding-bottom:8px;border-bottom:2px solid var(--accent)}
h3{font-size:1.08rem;font-weight:600;margin:0 0 5px;line-height:1.45;color:var(--ink)}
p{margin:0 0 13px}
.muted{color:var(--muted)}
hr{border:0;border-top:1px solid var(--line);margin:44px 0}

/* home header */
.intro{display:grid;grid-template-columns:1fr 300px;gap:56px;align-items:start}
.intro>*{min-width:0}
.intro img{width:100%;border-radius:10px;display:block;box-shadow:0 18px 40px -18px rgba(15,59,112,.45);
           outline:1px solid rgba(0,0,0,.06)}
@media(max-width:720px){.intro{grid-template-columns:1fr}.intro img{max-width:240px}}
.lines p{margin:0 0 5px;font-size:1.05rem}
.lines p:first-child{color:var(--ink)}
.status{font-weight:600;color:var(--ink);margin-top:14px;display:flex;align-items:center;gap:9px}
.status .dot{width:9px;height:9px;border-radius:50%;background:#2e9e6b;box-shadow:0 0 0 4px rgba(46,158,107,.18);flex:none}
.icons{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 26px}
.icons a{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 15px;border-radius:999px;
         border:1.5px solid #111;color:#111;background:#fff;font-family:var(--sans);font-size:.86rem;font-weight:600;letter-spacing:.01em;
         transition:background .15s,color .15s}
.icons a:hover{background:#111;color:#fff;text-decoration:none}
.icons a:hover svg{fill:#fff}
.icons svg{width:17px;height:17px;fill:#111;transition:fill .15s}
.intro p b{color:var(--ink)}

/* entries */
.entry{margin:0 0 30px}
.entry h3 a{font-weight:600;white-space:nowrap}
.entry .by{margin:0 0 4px}
.entry .upd{color:#444;margin:0 0 8px;font-family:var(--sans);font-size:.88rem}
.entry .abs{font-size:1rem;line-height:1.65;margin:0 0 8px;color:#111}
.entry ul{margin:0;padding-left:20px;font-size:.95rem;color:#222}
.entry ul li{margin:3px 0}
.entry ul li::marker{color:var(--accent)}
.note{color:var(--muted);font-size:.95rem;margin:-10px 0 20px;font-style:italic}
.more a{display:inline-block;margin:6px 28px 6px 0;font-family:var(--sans);font-weight:500;font-size:.95rem}
.more a::after{content:" \2192";}

/* teaching */
ul.plain{padding-left:20px;margin:0 0 12px}
ul.plain li{margin:6px 0}
ul.plain li::marker{color:var(--accent)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:34px}
@media(max-width:700px){.two{grid-template-columns:1fr}}

footer{border-top:1px solid var(--line);padding:22px 0;font-size:.85rem;color:var(--muted);font-family:var(--sans)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}