:root{--bg:#f2f2f2;--card:#fff;--ink:#10183a;--head:#000f46;--mut:#55607f;--line:#d3d8e4;--acc:#094183;--acc2:#0b7fb5;--good:#1a7f4b;--bad:#b3261e;--tint:#d9eff9;--onacc:#fff;--hdr:#000f46;--subbg:#d9eff9;--subedge:#4d6f8a;--pow:#000f46;--capbg:#e8eecb;--capedge:#2f4a1f}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#000a30;--card:#0b1a52;--ink:#e8eefb;--head:#fff;--mut:#a9b6d8;--line:#25356f;--acc:#7fd4f5;--acc2:#46c8f0;--good:#66d49a;--bad:#ff9d94;--tint:#13286b;--onacc:#000f46;--hdr:#000a30;--subbg:#0f2160;--subedge:#6f8fb5;--pow:#46c8f0;--capbg:#1d3019;--capedge:#9dbb6a}}
:root[data-theme=dark]{--bg:#000a30;--card:#0b1a52;--ink:#e8eefb;--head:#fff;--mut:#a9b6d8;--line:#25356f;--acc:#7fd4f5;--acc2:#46c8f0;--good:#66d49a;--bad:#ff9d94;--tint:#13286b;--onacc:#000f46;--hdr:#000a30;--subbg:#0f2160;--subedge:#6f8fb5;--pow:#46c8f0;--capbg:#1d3019;--capedge:#9dbb6a}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 "Source Sans 3",system-ui,sans-serif}
a{color:var(--acc)}h1,h2,h3{color:var(--head)}h1{font-size:2rem;line-height:1.2;margin:.2em 0 .4em}h2{font-size:1.25rem;margin:1.6em 0 .5em}h3{font-size:1rem;margin:.2em 0}
#top{position:sticky;top:0;z-index:5;display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:10px 20px;background:var(--hdr);border-bottom:1px solid var(--hdr)}
#top button{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}#top button:hover{border-color:#46c8f0}
.brand{font-weight:500;font-size:1.25rem;text-decoration:none;color:#fff}.brand b{color:#46c8f0}
#nav{display:flex;gap:2px;flex-wrap:wrap;flex:1}#nav a{padding:5px 10px;border-radius:6px;text-decoration:none;color:#cfd8f0;font-size:.95rem}#nav a:hover{color:#fff}#nav a.on{background:rgba(255,255,255,.14);color:#fff;font-weight:600}
#menu{display:none;margin-left:auto}
main{max-width:1120px;margin:0 auto;padding:24px 20px 48px;outline:none}
footer{max-width:1120px;margin:0 auto;padding:16px 20px 32px;color:var(--mut);font-size:.82rem;border-top:1px solid var(--line)}
button,.btn{font:inherit;font-weight:500;padding:8px 14px;border-radius:7px;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.btn:hover{border-color:var(--acc)}.pri{background:var(--acc);border-color:var(--acc);color:var(--onacc)}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--acc2);outline-offset:2px}
input,select,textarea{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--ink);max-width:100%}textarea{width:100%;min-height:90px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:14px}
.mut{color:var(--mut)}.sm{font-size:.86rem}.mono{font-family:"IBM Plex Mono",monospace}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:12px 16px}.stat b{display:block;font:600 1.6rem "IBM Plex Mono",monospace}
.yr{display:grid;grid-template-columns:70px 1fr;gap:10px;margin-bottom:14px}.yr>div:first-child{font-weight:700;font-size:.85rem;color:var(--mut);padding-top:6px}
.sem{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:8px}
.sub{display:block;background:var(--subbg);border:1px solid var(--line);border-left:4px solid var(--subedge);border-radius:8px;padding:9px 11px;text-decoration:none;color:var(--ink);min-height:92px;font-size:.88rem}.sub:hover{border-color:var(--acc)}
.sub.power{border-left:6px solid var(--pow)}.sub.cap{background:var(--capbg);border-left-color:var(--capedge)}.sub.el{background:var(--card);border-left-color:var(--mut);color:var(--mut)}.sub span{display:block}.sub .c{font:600 .75rem "IBM Plex Mono",monospace;color:var(--mut)}
.bar{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin-top:6px}.bar i{display:block;height:100%;background:var(--acc)}
.tag{display:inline-block;font-size:.72rem;font-weight:600;padding:1px 7px;border-radius:9px;background:var(--tint);color:var(--acc);margin-right:4px}.tag.w{background:var(--acc);color:var(--onacc)}
details.note{background:var(--card);border:1px solid var(--line);border-radius:8px;margin-bottom:8px}details.note summary{cursor:pointer;padding:10px 14px;font-weight:600}details.note>div{padding:0 14px 12px;overflow-x:auto}
.grid2{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}.grid2 .card{margin:0}
.opt{display:block;width:100%;text-align:left;margin:7px 0;font-weight:400}.opt.sel{border-color:var(--acc);background:var(--tint)}.opt.ok{border-color:var(--good);box-shadow:inset 3px 0 var(--good)}.opt.no{border-color:var(--bad);box-shadow:inset 3px 0 var(--bad)}
.fb{margin-top:12px;padding:10px 14px;background:var(--tint);border-radius:8px;overflow-x:auto}.good{color:var(--good);font-weight:600}.badc{color:var(--bad);font-weight:600}
.timer{position:sticky;top:var(--hh,56px);z-index:4;display:flex;justify-content:space-between;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 14px;margin-bottom:14px}.timer b{font:600 1.2rem "IBM Plex Mono",monospace}
table{border-collapse:collapse;width:100%;font-size:.92rem}th,td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}.tw{overflow-x:auto}
.katex-display{overflow-x:auto;overflow-y:hidden;padding:2px 0}
@media (max-width:760px){#menu{display:block}#nav{display:none;flex-basis:100%;order:5}#nav.open{display:flex;flex-direction:column}#theme{order:2}main{padding:16px}.sem{grid-template-columns:repeat(2,1fr)}.yr{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}}
@media print{#top,footer,button{display:none}body{background:#fff}}