:root{color-scheme:light;--red:#e41b12;--ink:#202124;--muted:#666;--line:#ddd}
.quiz-attempt input[type=radio],.quiz-attempt input[type=checkbox]{width:20px;height:20px;padding:0;margin:0 8px 0 0;vertical-align:middle}.quiz-attempt fieldset label{padding:10px 0;min-height:44px}.quiz-attempt legend{overflow-wrap:anywhere;max-width:100%}
.knowledge-body{overflow-wrap:anywhere;overflow-x:auto;min-width:0}.knowledge-body table{border-collapse:collapse;max-width:100%}.knowledge-body th,.knowledge-body td{padding:8px;border:1px solid var(--line);overflow-wrap:anywhere}.knowledge-body pre{white-space:pre-wrap}.knowledge-body a{overflow-wrap:anywhere}
.learning{overflow-wrap:anywhere}.learning .panel{max-width:100%;margin:20px 0;padding:24px}.learning .cards .panel{margin:0}.learning .cards{margin:24px 0}.learning details{margin:20px 0}.learning-theme{border-top:1px solid var(--line);margin-top:24px;padding-top:12px}.learning-body{white-space:pre-wrap}.learning .visibility-form{margin:8px 0 20px}.learning .visibility-form button{margin:8px 0;max-width:420px}.learning ul{padding-left:24px}.learning li{margin-bottom:12px}.progress-summary{font-weight:600}.learning form{max-width:650px}
nav{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}nav a,summary{padding:10px 12px;min-height:44px}a{color:#173d9f}summary{cursor:pointer;font-weight:600}.workspace{max-width:1000px;margin:auto}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));gap:16px}.card{padding:24px;border:1px solid var(--line);border-radius:12px;background:#fff;margin:16px 0;min-width:0;overflow-wrap:anywhere}.card h2{font-size:20px;margin:0 0 10px}.card form{max-width:620px}.workspace>form{max-width:650px}.notice,.messages{max-width:1000px;margin:0 auto 24px;padding:16px;border-radius:8px}.notice{background:#e8f4e8;color:#234523}.search{margin:24px 0}select,textarea{display:block;width:100%;max-width:100%;padding:13px;border:1px solid #aaa;border-radius:8px;font:inherit;background:white}textarea{min-height:100px;overflow-wrap:anywhere}select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #173d9f;outline-offset:3px}.pagination{display:flex;gap:16px;list-style:none;padding:0}.workspace button{max-width:420px}@media(max-width:500px){.card{padding:20px}nav{gap:4px}nav a{padding:10px}.cards{display:block}}
*{box-sizing:border-box}body{margin:0;background:#f5f5f4;color:var(--ink);font:16px/1.5 Arial,sans-serif}header{padding:24px 5%;border-bottom:1px solid var(--line);background:white}.brand{font-weight:800;letter-spacing:1px;color:var(--ink);text-decoration:none}.brand span{font-weight:400;letter-spacing:0;color:var(--muted);margin-left:16px}main{padding:56px 20px}.panel{max-width:460px;margin:auto;background:white;border:1px solid var(--line);border-radius:16px;padding:36px}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:2px;color:var(--muted)}h1{font-size:28px;line-height:1.2;margin:16px 0}.muted{color:var(--muted)}label{display:block;margin:20px 0 8px;font-weight:600}input{width:100%;padding:13px;border:1px solid #aaa;border-radius:8px;font:inherit}button{width:100%;padding:14px;margin-top:24px;border:0;border-radius:8px;background:var(--red);color:white;font:600 16px Arial,sans-serif;cursor:pointer}.secondary{background:#303030}.error{background:#fff1f0;color:#a3130d;border-left:3px solid var(--red);padding:12px}a:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid #173d9f;outline-offset:3px}@media(max-width:500px){main{padding:28px 16px}.panel{padding:24px}.brand span{display:block;margin:4px 0}h1{font-size:26px}}
.knowledge-body img{max-width:100%;height:auto;display:block;border-radius:10px}.knowledge-body a{overflow-wrap:anywhere}
.editor-toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:10px;background:#f3efee}.editor-toolbar button,.editor-toolbar input,.editor-toolbar select{width:auto;max-width:100%;margin:0;font-size:14px;flex:1 1 100px}.editor-content{min-height:220px;border:1px solid #aaa;padding:16px;background:white;overflow-wrap:anywhere}.editor-content:focus-visible{outline:3px solid #173d9f}.editor-preview{border:2px solid #b5cdb5;padding:16px;margin:16px 0}.knowledge-body video{width:100%;max-width:100%;max-height:480px}.workspace details.panel{max-width:800px;margin-bottom:12px}

.material-derivative{min-width:0;overflow-wrap:anywhere;overflow-x:clip}.material-derivative .panel,.material-derivative form,.material-derivative label{min-width:0;max-width:100%}.material-derivative select{display:block;min-width:0;width:100%;max-width:100%;text-overflow:ellipsis}

.material-derivative .material-check{display:flex;align-items:flex-start;gap:10px}.material-derivative .material-check input[type=checkbox]{width:auto;flex:0 0 auto;margin:3px 0 0}