:root{font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif;color:#182c38;background:#f3f5f5;--accent:#00665a}*{box-sizing:border-box}body{margin:0}header{background:#142f38;color:#fff;padding:18px 4vw;display:flex;align-items:center;justify-content:space-between;gap:20px}header b{font-size:23px;margin-right:25px}header span{color:#d0e2e3}header button{background:transparent;border-color:#8caeb4;color:#fff}.layout{display:grid;grid-template-columns:235px minmax(0,1fr);max-width:1440px;margin:auto}nav{padding:30px 15px;position:sticky;top:0;align-self:start}nav button{display:block;text-align:left;width:100%;background:transparent;color:#30464e;border:0;margin:5px 0;padding:13px;font-weight:500}nav button.active{background:#dbece7;color:#004c43;border-left:3px solid var(--accent)}main{padding:30px 35px 50px;min-width:0}.intro{background:transparent;border:0;padding:0 0 15px}.eyebrow{font-size:12px;letter-spacing:1.8px;color:var(--accent);font-weight:700}h1{font-size:34px;line-height:1.2;margin:12px 0 15px;font-weight:650}h2{font-size:20px;margin:0 0 18px}p{max-width:850px}section{background:#fff;border:1px solid #dce4e4;border-radius:12px;padding:25px;margin-bottom:22px}label{display:block;font-size:14px;font-weight:600;color:#30464e;margin:10px 0 5px}input,select,textarea{font:inherit;color:#182c38;border:1px solid #aebfc3;border-radius:6px;background:#fff;padding:9px 11px}textarea{width:100%;font:15px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;white-space:pre-wrap;resize:vertical}input{max-width:100%}#student{width:100%}select{max-width:100%;display:block;min-height:43px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.row label{margin:0}.row button,.row .filebutton{align-self:end}.between{justify-content:space-between}.between h2{margin:0}.quiet{font-size:13px;color:#576e77}.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(205px,1fr));gap:12px}.fields input,.fields select{width:100%}.actions{margin-top:20px}button,.filebutton{font:600 14px/1.4 system-ui,sans-serif;cursor:pointer;border:1px solid var(--accent);border-radius:6px;background:var(--accent);color:white;padding:10px 14px;min-height:42px}button:hover{filter:brightness(.92)}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.filebutton:focus-within{outline:3px solid #b57618;outline-offset:3px}.secondary,.filebutton{background:#fff;color:var(--accent)}.filebutton{position:relative;overflow:hidden;display:inline-block}.filebutton input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;background:#f5f8f8;border-radius:7px;padding:18px;max-height:700px;overflow:auto}#error{background:#fff0ee;color:#9e2415;border:1px solid #d78d82;border-radius:6px;padding:12px;margin-top:15px}footer{font-size:13px;color:#576e77}a{color:var(--accent)}.barrow{display:grid;grid-template-columns:32px minmax(0,1fr) 75px;gap:10px;font:13px/1.8 ui-monospace,monospace}.bar{background:#248579;height:14px;margin-top:5px;border-radius:2px}.chart{display:grid;grid-template-columns:1fr 1fr;gap:2px 28px}.hint{background:#f1f6f4;padding:14px;border-radius:6px;font-size:14px}@media(max-width:850px){.layout{grid-template-columns:1fr}nav{position:static;display:flex;overflow-x:auto;padding:12px;gap:8px}nav button{min-width:175px}main{padding:15px}header{align-items:flex-start}header span{display:none}h1{font-size:28px}section{padding:18px}.chart{grid-template-columns:1fr}}
@media print{header,nav,#actions,.row button,.filebutton{display:none}.layout{display:block}main{padding:0}section{break-inside:avoid}pre{max-height:none}body{background:white}}
#analysisgrid{display:grid;grid-template-columns:235px minmax(0,1fr);gap:20px;align-items:start}#statistics{background:white;border:1px solid #cbd7db;border-radius:8px;padding:17px;position:sticky;top:12px}#statistics h2{margin-bottom:8px}#statsTable{border-collapse:collapse;width:100%;font:13px/1.5 ui-monospace,Consolas,monospace}#statsTable td,#statsTable th{border:1px solid #d1dcdd;padding:4px;text-align:center}#statsTable th{background:#e9f1ed;color:#253d43}.workbench{min-width:0}#analysisgrid.single{grid-template-columns:1fr}.layout{grid-template-columns:205px minmax(0,1fr);max-width:1740px}main{padding:25px}header button{font-size:13px;padding:8px 12px}h1{font-size:30px}#source{overflow-wrap:anywhere}.workbench section{padding:20px}.symbolControls{padding:15px;background:#edf4f1;border:1px solid #c9dcd5;border-radius:6px;margin-bottom:15px}.symbolControls select{min-width:100px}#statsBody tr:nth-child(even){background:#f4f7f6}@media(max-width:1200px){.layout{grid-template-columns:180px minmax(0,1fr)}#analysisgrid{grid-template-columns:195px minmax(0,1fr)}main{padding:18px}#statistics{padding:10px}}@media(max-width:950px){.layout{grid-template-columns:1fr}#analysisgrid{grid-template-columns:1fr}#statistics{position:static;max-height:320px;overflow:auto}nav button{min-width:160px}header{flex-wrap:wrap}main{padding:15px}}@media print{#analysisgrid{display:block}#statistics{position:static;float:left;width:30%;margin-right:3%}}