:root{--bg:#f6f7f9;--card:#fff;--ink:#1d2433;--muted:#667085;--line:#e3e6eb;--accent:#0b6b5c;--accent-2:#e7f3f0;--warn:#b54708;--warn-bg:#fef0c7;--late:#b42318;--late-bg:#fee4e2;--ok:#067647;--ok-bg:#dcfae6}
@media (prefers-color-scheme:dark){:root{--bg:#0f1218;--card:#171b23;--ink:#e6e8ec;--muted:#98a2b3;--line:#2a303b;--accent:#4fd1b5;--accent-2:#16302b;--warn:#fdb022;--warn-bg:#3a2a0a;--late:#f97066;--late-bg:#3b1612;--ok:#47cd89;--ok-bg:#0f2e1f}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.top{position:sticky;top:0;z-index:5;display:flex;gap:16px;align-items:center;padding:10px 16px;background:var(--card);border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--ink);white-space:nowrap}
.top nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.top nav::-webkit-scrollbar{display:none}
.top nav a{padding:6px 10px;border-radius:6px;color:var(--muted);white-space:nowrap}.top nav a.on{background:var(--accent-2);color:var(--accent);font-weight:600}
main{max-width:960px;margin:0 auto;padding:16px}
footer{max-width:960px;margin:24px auto;padding:0 16px 32px;color:var(--muted);font-size:13px}
h1{font-size:24px;margin:8px 0 14px}h2{font-size:17px;margin:0 0 10px}h3{font-size:15px;margin:12px 0 6px}
h2.sect{margin:22px 0 10px;font-size:15px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:0 0 12px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;padding:0}
.cards .card{margin:0}.course{display:block;color:inherit}.course:hover{text-decoration:none;border-color:var(--accent)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:700px){.grid2{grid-template-columns:1fr}}
.hero .big{font-size:19px;font-weight:600;margin:4px 0}
.row{display:flex;gap:8px;align-items:center;justify-content:space-between}
.meta,.muted{color:var(--muted)}.meta{font-size:13px}.small{font-size:13px}.crumbs{margin:0;font-size:13px}
.links{font-size:14px}
.pill{display:inline-block;font-size:12px;padding:1px 8px;border-radius:999px;background:var(--line);color:var(--ink);vertical-align:middle}
.pill.ok,.pill.active{background:var(--ok-bg);color:var(--ok)}.pill.late{background:var(--late-bg);color:var(--late)}.pill.warn,.pill.upcoming{background:var(--warn-bg);color:var(--warn)}
.pill.muted,.pill.done{background:var(--line);color:var(--muted)}
b.late{color:var(--late)}
ul.plain{list-style:none;padding:0;margin:0}ul.plain>li{padding:5px 0;border-top:1px solid var(--line)}ul.plain>li:first-child{border-top:0}
li.past{color:var(--muted);text-decoration:line-through}
.lessons li{padding:3px 0}.lessons li.hdr{font-weight:600;padding-top:10px}
ul.todos{list-style:none;padding:0;margin:0}.todo{padding:7px 0;border-top:1px solid var(--line)}.todo:first-child{border-top:0}
.todo label{display:flex;gap:10px;align-items:flex-start;cursor:pointer}.todo input{margin-top:4px;width:18px;height:18px;flex:none}
.todo .meta{display:block;margin-left:28px}.todo.done span,.done{color:var(--muted);text-decoration:line-through}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:7px 6px;border-top:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:600;border-top:0}
@media(max-width:600px){table{display:block;overflow-x:auto}}
details{border-top:1px solid var(--line);padding:6px 0}details:first-of-type{border-top:0}summary{cursor:pointer;font-weight:500}
input,textarea,select,button{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px 10px}
textarea{width:100%;min-height:64px;margin:6px 0}input{width:100%}button{background:var(--accent);color:#fff;border:0;cursor:pointer;width:auto;white-space:nowrap}
form.inline{display:flex;gap:8px}form.inline input{flex:1}
.search{margin:0 0 12px}
.cur .q{font-weight:600;margin:0 0 2px}.cur.answered{opacity:.8}.cur .row select{width:auto}
.lib li{display:flex;flex-wrap:wrap;gap:6px;align-items:baseline}.lib select{width:auto;padding:3px 6px;font-size:13px}
.person h3{margin:0}.person input,.person textarea{margin-top:6px}.clamp{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.session h3{margin-top:0}.session+.session{margin-top:12px}
body.login{display:grid;place-items:center;min-height:100vh;padding:16px}body.login .card{width:100%;max-width:360px}body.login input{margin:10px 0}body.login button{width:100%}
.err{color:var(--late)}.warn{color:var(--warn)}