@font-face{font-family:Lora;src:url(/assets/lora-regular.ttf) format('truetype');font-display:swap}@font-face{font-family:Commissioner;src:url(/assets/commissioner.ttf) format('truetype');font-display:swap}
:root{--ink:var(--text);--bg:#f7f6f1;--panel:#efeee6;--text:#242d25;--muted:#5a665b;--line:#c5ccbf;--accent:#405e3c;--body:Lora,Georgia,serif;--sans:Commissioner,system-ui,sans-serif;color-scheme:light}html[data-theme=dark]{--bg:#18231e;--panel:#202e26;--text:#f2f1e9;--muted:#b7c4b6;--line:#49604e;--accent:#cadbae;color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:20px/1.8 var(--body)}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--accent)}button,input,textarea{font:inherit}button{font:16px/1.4 var(--sans);min-height:44px;padding:10px 16px;background:transparent;border:1px solid var(--line);border-radius:3px;color:var(--text);cursor:pointer}button:hover{background:var(--panel)}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}header{max-width:1240px;margin:auto;padding:28px 40px;display:flex;gap:24px;align-items:center;font:16px/1.5 var(--sans);border-bottom:1px solid var(--line)}header span{flex:1}.layout{max-width:1240px;margin:48px auto;display:grid;grid-template-columns:240px minmax(0,760px);gap:64px;padding:0 40px}nav{font:16px/1.45 var(--sans);align-self:start;position:sticky;top:24px}nav a{display:block;padding:10px 0;text-decoration:none;color:var(--muted)}nav a[aria-current=page]{color:var(--text);font-weight:600}main{min-width:0}h1{font:400 clamp(36px,4vw,56px)/1.15 var(--body);letter-spacing:-.025em;margin:12px 0 30px}h2{font:400 30px/1.3 var(--body);margin:36px 0 20px}h3{font:500 20px/1.5 var(--sans)}p{margin:0 0 24px}.eyebrow,.source,.hint,footer{font:16px/1.6 var(--sans);color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.1em}.source{border-left:2px solid var(--line);padding-left:18px;margin:30px 0}.source p{margin:8px 0}.lede{font-size:24px;color:var(--muted)}.entry{padding:22px 0;border-bottom:1px solid var(--line);display:block;text-decoration:none}.entry span{display:block;font:15px var(--sans);color:var(--muted)}.exercise,.lab{margin:40px 0;padding:28px;background:var(--panel);border:1px solid var(--line)}label{display:block;font:16px/1.6 var(--sans);margin-top:16px}textarea{width:100%;min-height:150px;resize:vertical;background:var(--bg);color:var(--text);border:1px solid var(--line);padding:15px;font-size:18px;line-height:1.65}details{margin-top:20px}summary{cursor:pointer;font:17px/1.6 var(--sans);padding:10px 0}details p{margin-top:16px}.next{display:flex;justify-content:space-between;gap:20px;margin:40px 0;font:17px/1.6 var(--sans)}.actions{display:flex;flex-wrap:wrap;gap:10px}.lab-controls{display:grid;grid-template-columns:1fr 1fr;gap:20px}.lab input{width:100%;accent-color:var(--accent)}svg{width:100%;height:auto;display:block}.lab-table{overflow:auto;font:15px/1.5 var(--sans)}table{border-collapse:collapse;width:100%}td,th{padding:7px;text-align:right;border-bottom:1px solid var(--line)}footer{max-width:1240px;margin:60px auto;padding:32px 40px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:28px}.skip{position:absolute;left:12px;top:-100px}.skip:focus{top:12px;background:var(--bg);padding:10px;z-index:10}[hidden]{display:none!important}.study-tools{margin:24px 0}.study-dialog{color:var(--text);background:var(--bg)}
@media(max-width:850px){header{padding:20px;gap:12px}.layout{display:block;margin:24px auto;padding:0 20px}nav{position:static;display:flex;gap:14px;overflow-x:auto;margin-bottom:32px;border-bottom:1px solid var(--line)}nav a{white-space:nowrap}body{font-size:19px}header span{display:none}header button{margin-left:auto}.exercise,.lab{padding:20px}.lab-controls{grid-template-columns:1fr}footer{padding:24px 20px}h1{font-size:38px}}
@media print{header,nav,.study-tools,button,footer{display:none}.layout{display:block;max-width:none;padding:0}body{background:white;color:black}details{display:block}}

.study-tools button,.study-note-action{font-size:16px}

:root .study-tools button,:root .study-note-action{font-size:16px}

.study-tools{display:flex;flex-wrap:wrap;gap:6px 18px;margin:24px 0 32px;align-items:center}.study-tools button{font:14px/1.5 Commissioner,sans-serif;padding:9px 0;min-height:44px;border:0;border-radius:0;background:none;color:var(--muted);text-align:left}.study-tools button:hover{color:var(--accent);text-decoration:underline;text-underline-offset:5px;background:none}.study-tools button:last-child{margin-left:auto}.study-note-action{display:block;font:14px/1.5 Commissioner,sans-serif;margin:8px 0;border:0;padding:8px 0;color:var(--accent);background:none}.study-dialog{box-sizing:border-box;width:min(760px,calc(100% - 24px));max-height:90dvh;padding:clamp(20px,4vw,36px);background:var(--bg);color:var(--ink);font:16px/1.65 Commissioner,sans-serif;border:1px solid var(--line);overflow:auto}.study-dialog *{box-sizing:border-box}.study-dialog-top{display:flex;align-items:start;gap:16px;justify-content:space-between;margin-bottom:20px}.study-dialog-top h2{font-size:clamp(25px,3vw,32px);margin:0}.study-dialog-top button{border:0;font-size:26px;padding:0 10px;min-width:44px}.study-dialog p{margin:16px 0}.study-dialog .study-help{font-size:14px;color:var(--muted);line-height:1.65}.study-actions{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.study-actions button,.study-restore button,.study-recovery button{font-size:15px;padding:11px 15px;min-height:46px;white-space:normal}.study-actions .study-preferred{border-color:var(--accent);color:var(--accent)}.study-dialog .study-check{display:flex;align-items:flex-start;gap:12px;margin:22px 0;cursor:pointer;font-size:15px}.study-dialog input[type=checkbox]{appearance:auto;width:20px;height:20px;min-height:20px;flex:0 0 20px;margin:3px 0 0;accent-color:var(--accent)}.study-preview-label{display:block;margin:18px 0 10px}.study-dialog textarea{width:100%;min-height:240px;max-height:45dvh;font:15px/1.65 Commissioner,sans-serif;padding:14px;resize:vertical;background:var(--paper,var(--bg));color:var(--ink)}.study-restore{margin:28px 0}.study-restore summary{font-size:18px;cursor:pointer;padding:10px 0}.study-restore label:not(.study-check){display:block;margin:12px 0}.study-dialog input[type=file]{display:block;width:100%;font-size:14px;padding:12px 0;white-space:normal}.study-status{font-size:15px;color:var(--accent);overflow-wrap:anywhere}.study-dialog [hidden]{display:none!important}.welcome-mode .study-tools{max-width:480px;margin:18px 0 0}.welcome-mode .study-tools button:last-child{margin-left:0}@media(max-width:600px){.study-tools{gap:4px 18px;margin:16px 0 26px;display:grid;grid-template-columns:1fr 1fr}.study-tools button{font-size:14px}.study-tools button:last-child{margin-left:0}.study-actions{display:grid;grid-template-columns:1fr}.study-actions button{width:100%;text-align:left}.study-dialog{max-height:88dvh}.study-dialog textarea{min-height:190px}.study-note-action{font-size:15px}}
.welcome-mode .study-tools button{color:inherit;opacity:.85}.welcome-mode .study-tools button:hover{opacity:1}