:root{font-family:Arial,Helvetica,sans-serif;color:#18324c;background:#f4f7fa;font-synthesis:none;--navy:#002e5e;--blue:#0055b8;--teal:#008b87;--green:#80bc00;--line:#dce5ee;--muted:#61768c}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{outline-offset:4px}a{color:var(--blue)}button{cursor:pointer;border:0;border-radius:7px;padding:11px 17px;background:var(--blue);color:white;font-weight:700;transition:background .15s,transform .15s}button:hover{background:#003e87}button:active{transform:translateY(1px)}button:disabled{opacity:.55;cursor:wait}button.secondary{background:#eaf0f6;color:var(--navy)}button.secondary:hover{background:#dce6ef}button.danger{background:#a52646}button.link{padding:5px 0;background:none;color:var(--blue)}input,textarea,select{border:1px solid #b7c7d6;border-radius:6px;background:white;color:#18324c;width:100%;padding:11px 12px}textarea{line-height:1.5;resize:vertical;min-height:100px}label{display:block;font-size:14px;font-weight:700;margin-bottom:7px}label small{display:block;color:var(--muted);font-weight:400;margin-top:4px}h1,h2,h3,p{margin-top:0}h1{font-size:36px;letter-spacing:-1px;line-height:1.15;color:var(--navy)}h2{font-size:21px;color:var(--navy);letter-spacing:-.3px}h3{font-size:16px;color:var(--navy)}p{line-height:1.6}small,.muted{color:var(--muted)}.skip{position:fixed;top:-80px;left:16px;background:white;padding:12px;z-index:20}.skip:focus{top:8px}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);font-weight:800;font-size:20px;letter-spacing:-.4px}.mark{background:var(--navy);color:var(--green);width:38px;height:38px;border-radius:9px;display:grid;place-items:center;font-size:17px;letter-spacing:-2px}.brand small{display:block;font-size:11px;letter-spacing:1.7px;text-transform:uppercase;margin-top:4px;font-weight:500}.topbar{height:76px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;gap:18px}.top-actions{display:flex;gap:12px;align-items:center;font-size:13px}.pill{display:inline-flex;align-items:center;border-radius:30px;background:#e8f4f1;color:#07685f;padding:6px 10px;font-size:11px;font-weight:800;letter-spacing:.5px;text-transform:uppercase}.pill.blue{background:#e9f1fc;color:var(--blue)}.workspace{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:calc(100vh - 76px)}.sidebar{background:white;border-right:1px solid var(--line);padding:26px 16px;display:flex;flex-direction:column;gap:8px}.sidebar-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.4px;color:var(--muted);padding:0 12px;margin-bottom:10px}.nav-item{display:flex;align-items:center;gap:11px;text-decoration:none;border-radius:7px;padding:13px 10px;font-size:13px;font-weight:700;color:#51667a;line-height:1.4}.nav-item:hover{background:#f3f6fa}.nav-item.active{color:var(--blue);background:#edf3fc;box-shadow:inset 3px 0 var(--blue)}.nav-num{display:grid;place-items:center;flex:0 0 25px;width:25px;height:25px;border-radius:50%;border:1px solid #d7e0e9;color:#6c7e90;font-size:11px}.nav-item.done .nav-num{background:#eaf4df;border-color:#d6e8ba;color:#4a7300}.sidebar-foot{margin-top:auto;padding:26px 12px 8px;font-size:12px;line-height:1.6;color:var(--muted)}.progress{height:5px;background:#e9eff4;border-radius:8px;overflow:hidden;margin:10px 0}.progress span{display:block;background:var(--green);height:100%}.content{max-width:1400px;width:100%;padding:30px 38px 60px;margin:auto}.eyebrow{font-size:11px;font-weight:800;letter-spacing:1.6px;color:var(--teal);text-transform:uppercase;margin-bottom:12px}.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:22px}.page-head h1{margin-bottom:10px}.page-head p{max-width:760px;color:#586e82;margin-bottom:0}.meta{white-space:nowrap;font-size:12px;color:var(--muted);padding-top:8px}.grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:22px;align-items:start}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:white;border:1px solid var(--line);border-radius:11px;padding:24px;margin-bottom:22px;box-shadow:0 3px 14px #16375804}.card-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:18px}.card-head h2,.card-head h3{margin:0}.card p:last-child{margin-bottom:0}.notice{background:#edf5fc;border-left:3px solid var(--blue);padding:14px 18px;border-radius:0 7px 7px 0;font-size:13px;line-height:1.6;margin-bottom:22px}.notice.green{background:#eff6e6;border-color:var(--green)}.notice.warning{background:#fff4e8;border-color:#c37b16}.notice.error{background:#fceef1;border-color:#ac2447;color:#87223a}.field{margin-bottom:18px}.controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.checks{display:grid;gap:12px}.check{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:7px;padding:13px;background:#fbfcfe}.check input{width:18px;height:18px;flex:0 0 18px;accent-color:var(--blue);margin-top:1px}.check label{margin:0;cursor:pointer;line-height:1.35}.check p{font-size:12px;font-weight:400;color:var(--muted);margin:5px 0 0}.tasklist{padding-left:21px;font-size:13px;color:#51667a;line-height:1.7;margin-bottom:0}.tasklist li{margin-bottom:5px}.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}table{border-collapse:collapse;width:100%;font-size:12px;line-height:1.5}th{text-align:left;font-size:10px;text-transform:uppercase;letter-spacing:.7px;color:var(--muted);background:#f6f9fc}th,td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}tr:last-child td{border-bottom:0}.table-wrap{overflow-x:auto}.status{font-size:10px;text-transform:uppercase;font-weight:800;padding:4px 7px;border-radius:4px;white-space:nowrap}.pass{color:#386700;background:#eaf4dd}.fail{color:#a32244;background:#fcecf0}.neutral{color:#285c8d;background:#eaf2fa}.event-id{font-family:monospace;font-size:10px;color:#5c7187;white-space:nowrap}.event{display:grid;grid-template-columns:14px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid #e7edf3}.event-dot{width:9px;height:9px;background:var(--teal);border-radius:50%;margin-top:6px;box-shadow:0 0 0 4px #ecf5f4}.event.deny .event-dot{background:#b1284b;box-shadow:0 0 0 4px #fbebee}.event p{font-size:13px;margin:3px 0 5px}.event small{font-size:10px}.event summary{font-size:11px;color:var(--blue);cursor:pointer}pre,code{font-family:Consolas,'Courier New',monospace}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.7;background:#f5f8fb;border:1px solid var(--line);padding:17px;border-radius:7px}.code-editor{font-family:Consolas,monospace;font-size:13px;min-height:240px;background:#f8fafc;line-height:1.6}.file-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.file-list button{font-size:12px;padding:8px 12px;background:#ecf1f6;color:var(--navy)}.file-list button.active{background:var(--navy);color:white}.doc{padding:14px 0;border-bottom:1px solid var(--line)}.doc summary{cursor:pointer;font-size:14px;font-weight:700;line-height:1.5}.doc summary span{font-size:10px;margin-right:7px;color:var(--teal)}.doc pre{font-size:12px}.route{background:#f2f6fa;border-left:3px solid var(--teal);font-size:12px;padding:12px;margin-top:10px;line-height:1.6}.diagram{display:flex;align-items:stretch;gap:14px;margin:20px 0 27px}.node{flex:1;background:#eef4fb;border:1px solid #ccddee;border-top:3px solid var(--blue);padding:18px 13px;border-radius:6px;text-align:center;font-size:13px;font-weight:700}.node span{display:block;font-weight:400;font-size:11px;color:var(--muted);margin-top:8px;line-height:1.5}.arrow{align-self:center;color:var(--teal);font-size:22px}.boundary-row{padding:16px 0;border-top:1px solid var(--line)}.boundary-row h3{color:var(--teal)}.finding{border-left:3px solid var(--teal);padding:11px 14px;background:#f4f8fb;margin:12px 0;font-size:13px}.finding p{margin:7px 0 0}.notebook{margin-top:8px}.notebook textarea{min-height:130px}.result-message{padding:14px;background:#f1f6fc;border:1px solid #d6e3f0;border-radius:6px;font-size:13px;line-height:1.6;margin:18px 0;overflow-wrap:anywhere}#toast{position:fixed;right:24px;bottom:24px;max-width:460px;background:var(--navy);color:white;padding:14px 20px;border-radius:8px;font-size:13px;box-shadow:0 5px 30px #001a3940;z-index:50;display:none}#toast.show{display:block}.loading{padding:90px;text-align:center;color:var(--muted)}.login-layout{max-width:1180px;margin:0 auto;padding:65px 35px;display:grid;grid-template-columns:1.15fr 1fr;gap:70px;align-items:center;min-height:calc(100vh - 76px)}.hero h1{font-size:52px;max-width:600px;letter-spacing:-2px}.hero p{font-size:17px;max-width:480px;color:var(--muted)}.hero .diagram{margin:34px 0;gap:8px}.hero .node{background:white;padding:20px 8px}.login-card{box-shadow:0 15px 50px #1738550a;border-top:4px solid var(--green);padding:32px}.login-card h2{font-size:26px}.login-card button[type=submit]{width:100%;padding:14px}.login-card .fine{font-size:11px;line-height:1.6;margin-top:18px;color:var(--muted)}.login-tabs{display:flex;gap:18px;margin-bottom:23px;border-bottom:1px solid var(--line);padding-bottom:12px}.login-tabs a{text-decoration:none;font-size:13px;color:var(--muted);font-weight:700}.login-tabs a.active{color:var(--blue)}.stats{display:flex;gap:24px;font-size:12px;color:var(--muted);line-height:1.7}.stats strong{display:block;font-size:23px;color:var(--navy)}.secret{background:#eef4fa;border:1px dashed #7899b8;padding:15px;font-family:monospace;font-size:14px;overflow-wrap:anywhere;user-select:all}.class-row{padding:17px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;align-items:center}.class-row h3{margin-bottom:5px}.class-row p{font-size:12px;margin:0;color:var(--muted)}.instructor{max-width:1180px;margin:auto;padding:35px}.evidence-card{border-top:3px solid var(--teal)}.footer-note{font-size:11px;line-height:1.6;color:var(--muted);margin-top:20px}.print-report{display:none}.review-label{font-size:11px;color:var(--muted);margin-top:8px}.nowrap{white-space:nowrap}
@media(max-width:1100px){.content{padding:26px 24px}.workspace{grid-template-columns:210px minmax(0,1fr)}.grid{grid-template-columns:1fr}.grid.three{grid-template-columns:1fr 1fr}.hero h1{font-size:42px}.login-layout{gap:35px;padding-top:40px}.topbar{padding:0 22px}.top-actions .nickname{display:none}}
@media(max-width:700px){.topbar{height:auto;min-height:72px;padding:14px 18px;flex-wrap:wrap}.brand{font-size:17px}.top-actions{gap:8px}.top-actions button{padding:8px 10px;font-size:11px}.workspace{display:block}.sidebar{padding:12px;flex-direction:row;overflow-x:auto;border-bottom:1px solid var(--line);border-right:0;position:relative}.sidebar-title,.sidebar-foot{display:none}.nav-item{flex:0 0 158px;font-size:11px;padding:8px}.content{padding:25px 16px}.page-head{display:block}h1{font-size:29px}.meta{margin-top:12px}.card{padding:18px}.split,.grid.three{grid-template-columns:1fr}.diagram{gap:6px}.node{padding:12px 7px;font-size:11px}.arrow{font-size:15px}.node span{font-size:10px}.login-layout{display:block;padding:30px 20px}.hero h1{font-size:37px;letter-spacing:-1px}.hero .diagram{display:none}.hero p{font-size:15px}.hero{margin-bottom:30px}.login-card{padding:24px}.stats{gap:18px;margin:20px 0}.login-tabs{gap:14px}#toast{right:14px;left:14px;bottom:14px}.class-row{align-items:flex-start}.instructor{padding:22px 16px}}
@media print{body{background:white;font-size:10pt}.topbar,.workspace,.instructor,.login-layout,#toast,.skip{display:none!important}.print-report{display:block!important;padding:0;color:black}.print-report h1{font-size:22pt}.print-report h2{font-size:15pt;margin-top:24px;break-after:avoid}.print-report h3{font-size:12pt}.print-report p,.print-report pre{font-size:10pt;line-height:1.5}.print-report pre{border:0;background:white;padding:0}.print-report section{break-inside:avoid}.print-report table{font-size:8pt}.print-report tr{break-inside:avoid}.print-report a{color:black}.print-report .event{break-inside:avoid}}

.guide>summary{font-size:16px;color:var(--navy)}.guide-phase{border-top:1px solid var(--line);padding:16px 0}.guide-phase>summary{color:var(--navy);font-weight:700;cursor:pointer}.guide-step{margin:22px 0 26px;max-width:900px}.guide-step h3{margin-bottom:12px}.guide-step ol{padding-left:24px;line-height:1.65}.guide-step li{margin-bottom:9px}.guide-entries{padding:14px 18px;background:#f4f7fa;border-left:3px solid var(--blue)}.guide-entries dt{font-weight:700;margin-top:12px}.guide-entries dt:first-child{margin-top:0}.guide-entries dd{margin:5px 0;line-height:1.55}.guide-why{color:#466077}.guide-expected{border-left:3px solid var(--teal);padding:12px 16px;background:#eef8f5}.guide-step pre{white-space:pre-wrap;overflow-wrap:anywhere}