/* Minimal academic style: light background, dark text, muted green accent */
:root{--bg:#fff;--fg:#1f2a37;--muted:#5b6673;--accent:#2f6f4f;--line:#e3e8ee}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--fg);background:var(--bg)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header.site{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;padding:16px 24px;border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--fg)}
header nav{display:flex;flex-wrap:wrap;gap:8px 18px;flex:1}
.lang a.on{font-weight:700;text-decoration:underline}
main{max-width:860px;margin:0 auto;padding:40px 24px}
h1{margin:0 0 8px;font-size:2rem}
.tag{color:var(--accent);letter-spacing:.04em;font-size:.85rem;text-transform:uppercase;margin:0 0 16px}
.lead{color:var(--muted);font-size:1.1rem}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.cards li{border:1px solid var(--line);border-radius:8px;padding:14px 16px}
.todo{margin-top:32px;color:var(--muted);font-style:italic}
footer{text-align:center;color:var(--muted);padding:32px 24px;border-top:1px solid var(--line);font-size:.9rem}

/* ---- content components ---- */
header nav a[aria-current=page]{color:var(--fg);font-weight:600;border-bottom:2px solid var(--accent)}
h2{font-size:1.25rem;margin:40px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--line)}
h3{font-size:1.05rem;line-height:1.4;margin:6px 0}
.hero{display:flex;gap:28px;align-items:flex-start}
.portrait{border-radius:8px;border:1px solid var(--line);object-fit:cover;flex:none}
.stats{list-style:none;padding:0;margin:28px 0 8px;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px}
.stats li{border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.stats strong{display:block;font-size:1.6rem;color:var(--accent);line-height:1.2}
.stats span{color:var(--muted);font-size:.85rem}
.about{display:flex;gap:28px;align-items:flex-start;margin-top:16px}
.about p:first-child{margin-top:0}
ul.plain{padding-left:20px}
ul.timeline{list-style:none;padding:0;margin:0}
ul.timeline li{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:10px 0;border-bottom:1px solid var(--line)}
.when{color:var(--muted);font-size:.9rem;white-space:nowrap}
.pub,.conf{padding:18px 0;border-bottom:1px solid var(--line)}
.conf{display:flex;gap:20px;align-items:flex-start}
.conf .thumb img,.conf>img{width:150px;height:auto;border:1px solid var(--line);border-radius:4px;display:block}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:4px}
.badge{font-size:.75rem;border:1px solid var(--line);border-radius:999px;padding:1px 9px;color:var(--muted)}
.badge.q{border-color:var(--accent);color:var(--accent);font-weight:600}
.badge.n{font-style:italic}
.authors,.venue{margin:2px 0;font-size:.95rem}.authors{color:var(--muted)}
details{margin:8px 0}summary{cursor:pointer;color:var(--accent);font-size:.9rem}
.links{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.9rem;margin:6px 0 0}
.tags{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.tags li{background:#f2f6f4;color:var(--accent);border-radius:4px;padding:1px 8px;font-size:.78rem}
@media(max-width:640px){.hero,.about{flex-direction:column}ul.timeline li{grid-template-columns:1fr;gap:2px}.conf{flex-direction:column}}
.btn{display:inline-block;border:1px solid var(--accent);border-radius:6px;padding:6px 14px;font-size:.92rem}
.btn:hover{background:var(--accent);color:#fff;text-decoration:none}
.muted{color:var(--muted);font-size:.92rem}
dl{margin:0}dt{font-weight:600;margin-top:12px}dd{margin:2px 0 0}
figure{margin:16px 0}figcaption{font-size:.9rem;color:var(--muted);margin-bottom:4px}
pre{background:#f6f8fa;border:1px solid var(--line);border-radius:6px;padding:12px 14px;overflow-x:auto;font-size:.82rem;line-height:1.5;margin:0}

/* ---- tutorials ---- */
ol.tutlist{list-style:none;padding:0;margin:0;counter-reset:t}
ol.tutlist li{counter-increment:t;border:1px solid var(--line);border-radius:8px;padding:12px 16px 12px 52px;margin:0 0 10px;position:relative}
ol.tutlist li::before{content:counter(t);position:absolute;left:16px;top:12px;width:24px;height:24px;border-radius:50%;background:#f2f6f4;color:var(--accent);font-weight:600;font-size:.85rem;display:flex;align-items:center;justify-content:center}
.cards .meta{margin:8px 0 0}
.profrow{margin:14px 0 0}