:root{--wine:#722b37;--ink:#26372e;--muted:#68736d;--line:#dce3dc;--paper:#f4f6f1;--green:#31644c}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 'Segoe UI',Arial,sans-serif}a{color:inherit;text-decoration:none}button,select,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #c6964d;outline-offset:3px}.demo{text-align:center;padding:7px 18px;background:#273a30;color:white;font-size:11px;letter-spacing:.6px}header{height:85px;background:white;border-bottom:1px solid var(--line);padding:0 4%;display:flex;align-items:center;justify-content:space-between}.brand{font-size:25px;font-weight:800;letter-spacing:-1px;line-height:1.2}.brand span{color:var(--wine)}.brand small{display:block;font-size:9px;letter-spacing:2px;margin-top:5px}.outline,.primary{display:inline-block;border:1px solid var(--line);border-radius:6px;background:white;color:var(--ink);padding:11px 18px;font-size:13px;font-weight:650}.primary{background:var(--wine);color:white;border-color:var(--wine)}.primary:hover{background:#54212a}.layout{display:grid;grid-template-columns:275px 1fr;max-width:1600px;margin:auto;min-height:calc(100vh - 120px)}aside{padding:30px 23px;background:#fff;border-right:1px solid var(--line)}aside label,.eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:750;color:var(--wine)}select{width:100%;padding:10px 8px;margin:10px 0 20px;border:1px solid var(--line);border-radius:5px;background:white;font-size:12px}#sideCourse{font-weight:700;font-size:16px;line-height:1.4;margin-bottom:24px}nav{display:grid;gap:7px}nav button{background:none;border:0;text-align:left;padding:12px;border-radius:5px;color:var(--muted);font-size:13px}nav button.active{background:#f3e9e9;color:var(--wine);font-weight:700}.side-bottom{margin-top:45px;padding-top:25px;border-top:1px solid var(--line);font-size:12px}.side-bottom p{color:var(--muted)}.side-bottom a{color:var(--wine)}main{padding:40px 5%;min-width:0;outline:none}h1{font-size:34px;line-height:1.15;letter-spacing:-1px;margin:10px 0 18px}h2{font-size:22px;line-height:1.3;margin:0 0 15px}h3{font-size:17px;line-height:1.4;margin:0 0 10px}p{color:var(--muted)}.lead{max-width:750px}.row{display:flex;justify-content:space-between;align-items:center;gap:20px}.box{background:white;border:1px solid var(--line);padding:25px;border-radius:9px;margin:22px 0}.intro{background:#273c30;color:white;border:0}.intro p{color:#d0ddd2}.intro h2{font-size:28px;max-width:600px}.intro .primary{background:#edcd9d;color:#26372e;border:0}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:23px 0}.stat{border:1px solid var(--line);background:white;border-radius:8px;padding:22px}.stat b{display:block;font-size:30px;color:var(--wine)}.stat span{font-size:12px;color:var(--muted)}.progress{height:8px;background:#e3e9e2;border-radius:10px;overflow:hidden;margin:12px 0}.progress div{height:100%;background:var(--green);transition:width .3s}.badge{display:inline-block;background:#edf3e9;color:#366044;padding:5px 10px;border-radius:30px;font-size:11px}.badge.warn{background:#f7eddb;color:#89632e}.note{font-size:12px;padding:15px 18px;background:#f4eddf;border-left:3px solid #c29a54;border-radius:3px;margin:20px 0}.module{border:1px solid var(--line);border-radius:8px;background:white;margin:16px 0;overflow:hidden}.module summary{padding:20px;cursor:pointer;font-weight:700}.module-content{padding:0 20px 20px}.lesson-btn{display:flex;justify-content:space-between;width:100%;text-align:left;padding:13px 12px;background:#f8faf6;border:1px solid var(--line);border-radius:5px;margin:8px 0;font-size:13px}.lesson-btn span{font-size:11px;color:var(--green)}.lesson-text{font-size:16px;line-height:1.9;max-width:780px}.lesson-text ul{padding-left:22px;color:var(--muted)}.lesson-text li{margin:10px 0}.activity{padding:20px;background:#f2f5ec;border-radius:6px;margin:25px 0}.activity textarea{width:100%;min-height:110px;padding:12px;font:inherit;border:1px solid #c8d4c4;border-radius:5px;resize:vertical}.lesson-footer{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:25px}.feedback{padding:13px;background:#edf4ec;border-radius:6px;margin-top:12px;font-size:13px}.wrong{background:#f8eee7}.answers{display:grid;gap:9px;margin:15px 0}.answer{display:flex;gap:12px;border:1px solid var(--line);border-radius:6px;padding:13px;cursor:pointer;background:white;font-size:14px}.answer:has(input:checked){border-color:var(--wine);background:#fbf2f2}.question{border:0;padding:0;margin:0 0 28px;min-width:0}.question legend{font-weight:650;margin-bottom:10px}.result-list{display:grid;gap:13px}.result-item{border-left:4px solid var(--green);padding:14px 18px;background:#f7faf4}.result-item.fail{border-color:#aa643c;background:#fff5ef}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:12px}dl{margin:0}dt{font-weight:700;margin-top:17px}dd{margin:4px 0;color:var(--muted);font-size:14px}.resources{display:grid;grid-template-columns:1fr 1fr;gap:18px}.resources .box{margin:0}.tabs-actions{display:flex;gap:10px;flex-wrap:wrap;margin:15px 0}#toast{position:fixed;bottom:20px;right:20px;background:var(--ink);color:#fff;padding:12px 20px;border-radius:6px;display:none;z-index:10;max-width:90vw}.muted{color:var(--muted);font-size:12px}@media(max-width:900px){.layout{grid-template-columns:220px 1fr}aside{padding:25px 15px}main{padding:30px 5%}.stats{gap:10px}.stat{padding:15px}.resources{grid-template-columns:1fr}h1{font-size:29px}}@media(max-width:600px){.layout{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid var(--line);padding:17px 5%}aside label,#sideCourse,.side-bottom{display:none}select{margin:0 0 12px}nav{display:flex;overflow:auto;gap:5px}nav button{white-space:nowrap;padding:8px 10px;font-size:11px}header{height:72px}.brand{font-size:22px}.outline,.primary{padding:10px 13px;font-size:12px}main{padding:25px 5%}.row{align-items:start;flex-wrap:wrap;gap:10px}.stats{grid-template-columns:repeat(3,1fr);gap:7px}.stat{padding:12px}.stat b{font-size:24px}.stat span{font-size:10px}.box{padding:20px}.demo{font-size:9px}.lesson-text{font-size:15px}h1{font-size:28px}table{font-size:11px}th,td{padding:9px 6px}}