:root{--navy:#0656b5;--navy-2:#0656b5;--navy-dark:#04458f;--charcoal:#222;--gold:#0656b5;--bg:#f4f6f9;--card:#fff;--text:#222;--muted:#5c6577;--line:#e1e5ec;--green:#1f7a4d;--green-bg:#e6f4ec;--red:#b42318;--red-bg:#fdecea;--amber-bg:#fff6e0}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}a{color:var(--navy-2)}.topbar{color:var(--charcoal);border-bottom:3px solid var(--navy);background:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;display:flex}.brand{align-items:center;gap:10px;text-decoration:none;display:flex}.brand img{width:auto;height:38px;display:block}.brand span{letter-spacing:3px;text-transform:uppercase;color:var(--navy);border-left:2px solid var(--line);padding-left:10px;font-size:13px;font-weight:700}.topbar nav{align-items:center;gap:14px;font-size:14px;display:flex}.topbar nav a,.topbar nav button{color:var(--charcoal);cursor:pointer;font-weight:600;font:inherit;background:0 0;border:0;padding:0;text-decoration:none}.wrap{max-width:960px;margin:0 auto;padding:24px 16px 64px}.card{background:var(--card);border:1px solid var(--line);border-radius:10px;margin-bottom:16px;padding:20px}h1{color:var(--charcoal);margin:0 0 6px;font-size:26px}h2{margin:0 0 12px;font-size:19px}h3{margin:0 0 8px;font-size:16px}.muted{color:var(--muted);font-size:14px}.btn{background:var(--navy);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:10px 16px;font-size:15px;font-weight:600;text-decoration:none;display:inline-block}.btn:hover{background:var(--navy-dark)}.btn.secondary:hover{background:var(--bg)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.secondary{color:var(--navy);border:1px solid var(--line);background:#fff}.btn.small{padding:6px 10px;font-size:13px}input[type=text],input[type=email],input[type=password],input[type=date]{border:1px solid var(--line);border-radius:8px;width:100%;margin:4px 0 12px;padding:10px 12px;font-size:15px}label{font-size:14px;font-weight:600}.progress{background:var(--line);border-radius:99px;height:10px;overflow:hidden}.progress>div{background:var(--gold);height:100%}.days{gap:8px;display:grid}.dayrow{border:1px solid var(--line);color:inherit;background:#fff;border-radius:8px;align-items:center;gap:12px;padding:12px 14px;text-decoration:none;display:flex}.dayrow.locked{opacity:.55;pointer-events:none}.daynum{width:56px;color:var(--navy);flex-shrink:0;font-weight:700}.daytitle{flex:1}.pill{white-space:nowrap;border-radius:99px;padding:3px 9px;font-size:12px;font-weight:600}.pill.done{background:var(--green-bg);color:var(--green)}.pill.todo{background:var(--amber-bg);color:#8a5a00}.pill.locked{background:var(--line);color:var(--muted)}.pill.fail{background:var(--red-bg);color:var(--red)}.lesson p{margin:0 0 10px}.lesson ul{margin:0 0 10px;padding-left:20px}.q{border-top:1px solid var(--line);padding:14px 0}.q:first-of-type{border-top:0}.opt{cursor:pointer;border-radius:6px;align-items:flex-start;gap:8px;padding:6px 8px;font-weight:400;display:flex}.opt.right{background:var(--green-bg)}.opt.wrong{background:var(--red-bg)}.why{color:var(--muted);margin-top:4px;font-size:14px}.check{align-items:center;gap:10px;font-weight:400;display:flex}.banner{border-radius:8px;margin-bottom:12px;padding:10px 14px;font-size:14px}.banner.error{background:var(--red-bg);color:var(--red)}.banner.ok{background:var(--green-bg);color:var(--green)}.tablewrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;padding:10px 8px}th{color:var(--muted);font-size:13px;font-weight:600}.grid2{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;display:grid}.stat{border:1px solid var(--line);background:#fff;border-radius:10px;padding:14px}.stat b{color:var(--navy);font-size:24px;display:block}.weekhead{text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:20px 0 8px;font-size:14px}table.wrap-cells th,table.wrap-cells td{white-space:normal;vertical-align:top;min-width:140px}.toc{flex-wrap:wrap;gap:8px;margin:12px 0 20px;display:flex}.toc a{border:1px solid var(--line);color:var(--navy);background:#fff;border-radius:99px;padding:6px 12px;font-size:13px;font-weight:600;text-decoration:none}section[id]{scroll-margin-top:16px}.lesson h3{margin:18px 0 8px}.lesson ol{margin:0 0 10px;padding-left:20px}