:root{--legend-blue:#0d3553;--horizon-blue:#0095c8;--uma-green:#78be21;--uma-gold:#eebe04;--deep-blue:#1d6ba6;--light-tint:#cceaf4;--ink:#231f20;--bg:#f4f7fa;--surface:#fff;--surface-alt:#eef3f8;--border:#d6dee8;--text:#1d2939;--muted:#5f6b7a;--success:#157347;--warning:#9a5b00;--danger:#b42318;--radius:10px;--shadow:0 8px 24px #0d355314;--font:Roboto, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;--mono:"Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{font-family:var(--font);color:var(--text);background:var(--bg);margin:0;font-size:16px;line-height:1.5}h1,h2,h3{color:var(--legend-blue);margin:0 0 8px;line-height:1.2}h1{font-size:1.75rem}h2{font-size:1.2rem}h3{font-size:1.02rem}p{margin:0 0 12px}a{color:var(--deep-blue)}.muted{color:var(--muted)}.small{font-size:.875rem}.center{place-items:center;min-height:40vh;display:grid}.mt{margin-top:16px}.mb{margin-bottom:16px}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.grid{gap:16px;display:grid}.grid.two{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid.three{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.shell{grid-template-columns:240px 1fr;min-height:100vh;display:grid}.sidebar{background:var(--legend-blue);color:#fff;flex-direction:column;gap:20px;height:100vh;padding:20px 16px;display:flex;position:sticky;top:0}.brand{align-items:center;gap:10px;display:flex}.brand-mark{background:var(--horizon-blue);border-radius:9px;place-items:center;width:36px;height:36px;font-size:1.1rem;font-weight:700;display:grid}.brand-title{font-weight:700;line-height:1.15}.brand-sub{opacity:.8;font-size:.75rem}.nav{flex-direction:column;gap:4px;display:flex}.nav a{color:#e6eef5;border-radius:8px;justify-content:space-between;align-items:center;padding:9px 12px;font-weight:500;text-decoration:none;display:flex}.nav a:hover{background:#ffffff14}.nav a.active{background:var(--horizon-blue);color:#fff}.sidebar-foot{flex-direction:column;gap:10px;margin-top:auto;display:flex}.user-chip{align-items:center;gap:10px;display:flex}.avatar{background:var(--uma-green);width:34px;height:34px;color:var(--legend-blue);border-radius:50%;place-items:center;font-weight:700;display:grid}.user-name{font-weight:500}.sidebar .muted{color:#b9c9d8}.main{width:100%;max-width:1100px;padding:28px 32px 60px}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;display:flex}.page-actions{flex-wrap:wrap;gap:8px;display:flex}@media (width<=860px){.shell{grid-template-columns:1fr}.sidebar{flex-flow:wrap;align-items:center;height:auto;position:static}.nav{flex-flow:wrap}.sidebar-foot{flex-direction:row;align-items:center;margin-top:0;margin-left:auto}.main{padding:20px 16px 40px}}.auth{grid-template-columns:1.1fr 1fr;min-height:100vh;display:grid}.auth-hero{background:linear-gradient(150deg, var(--legend-blue) 0%, #0b4f7c 55%, var(--deep-blue) 100%);color:#fff;flex-direction:column;justify-content:center;padding:56px 48px;display:flex}.auth-hero h1{color:#fff;margin-bottom:12px;font-size:2.4rem}.auth-hero h1 span{color:var(--uma-green)}.auth-hero p{color:#d8e6f1;max-width:460px}.auth-hero ul{color:#d8e6f1;padding-left:20px}.auth-panel{place-items:center;padding:32px 20px;display:grid}.auth-card{width:100%;max-width:420px}.tabs{background:var(--surface-alt);border-radius:10px;gap:4px;margin-bottom:18px;padding:4px;display:flex}.tabs button{font:inherit;cursor:pointer;color:var(--muted);background:0 0;border:0;border-radius:8px;flex:1;padding:9px;font-weight:500}.tabs button.active{color:var(--legend-blue);background:#fff;box-shadow:0 1px 3px #00000014}@media (width<=860px){.auth{grid-template-columns:1fr}.auth-hero{padding:36px 24px}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card.flat{box-shadow:none}.card.alt{background:var(--surface-alt)}.card.good{border-left:5px solid var(--uma-green)}.card.warn{border-left:5px solid var(--uma-gold)}.card.danger{border-left:5px solid var(--danger)}.card.info{border-left:5px solid var(--horizon-blue)}.card h2:first-child,.card h3:first-child{margin-top:0}.btn{font:inherit;cursor:pointer;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-weight:500;line-height:1.2;text-decoration:none;display:inline-flex}.btn:focus-visible{outline:3px solid var(--uma-gold);outline-offset:2px}.btn-primary{background:var(--horizon-blue);color:#fff}.btn-primary:hover{background:#0782ad}.btn-secondary{background:var(--legend-blue);color:#fff}.btn-outline{color:var(--legend-blue);border-color:var(--border);background:#fff}.btn-outline:hover{background:var(--surface-alt)}.btn-ghost{color:#e6eef5;background:0 0;border-color:#ffffff4d}.btn-ghost:hover{background:#ffffff14}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-lg{padding:13px 22px;font-size:1.05rem}.field{flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.field label{font-size:.925rem;font-weight:500}input[type=text],input[type=email],input[type=password],select,textarea{font:inherit;border:1px solid var(--border);color:var(--text);background:#fff;border-radius:8px;width:100%;padding:10px 12px}input:focus-visible,select:focus-visible,textarea:focus-visible{border-color:var(--horizon-blue);outline:3px solid #0095c859}.check{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:8px;align-items:flex-start;gap:10px;padding:12px 14px;display:flex}.check input{width:18px;height:18px;margin-top:4px}.error{color:var(--danger);font-weight:500}.turnstile{min-height:0;margin:4px 0 14px}.ok{color:var(--success);font-weight:500}.pill{background:var(--light-tint);color:var(--legend-blue);border-radius:999px;padding:3px 10px;font-size:.8rem;font-weight:600;display:inline-block}.pill.small{padding:1px 8px;font-size:.72rem}.pill.good{color:#2f6a00;background:#e3f4d0}.pill.warn{color:#7a4d00;background:#fff1c2}.pill.danger{color:#8a1a12;background:#fde2df}.pill.info{background:var(--light-tint);color:var(--legend-blue)}.metrics{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;display:grid}.metric{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.metric .label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.8rem}.metric .value{color:var(--legend-blue);font-size:1.9rem;font-weight:700;line-height:1.1}.metric .delta{font-size:.85rem;font-weight:600}.metric .delta.up{color:var(--success)}.metric .delta.down{color:var(--danger)}.checklist{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.checklist li{border:1px solid var(--border);background:#fff;border-radius:8px;align-items:center;gap:12px;padding:12px 14px;display:flex}.checklist li.done{background:#f3faea;border-color:#cfe7b0}.checklist li.locked{opacity:.6}.checklist .mark{border:2px solid var(--border);width:26px;height:26px;color:var(--muted);border-radius:50%;flex:none;place-items:center;font-weight:700;display:grid}.checklist li.done .mark{background:var(--uma-green);border-color:var(--uma-green);color:var(--legend-blue)}.checklist li.current .mark{border-color:var(--horizon-blue);color:var(--horizon-blue)}.checklist .grow{flex:1}.typing{flex-direction:column;gap:14px;display:flex}.typing-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.timer{font-family:var(--mono);color:var(--legend-blue);font-size:1.6rem;font-weight:700}.timer.low{color:var(--danger)}.live{color:var(--muted);flex-wrap:wrap;gap:16px;font-weight:500;display:flex}.source{font-family:var(--mono);border:1px solid var(--border);border-radius:var(--radius);white-space:pre-wrap;word-break:break-word;background:#fff;min-height:96px;padding:18px 20px;font-size:1.15rem;line-height:1.9}.source .c-ok{color:#2f6a00}.source .c-bad{color:#fff;background:var(--danger);border-radius:3px}.source .c-cur{background:var(--light-tint);box-shadow:inset 0 -2px 0 var(--horizon-blue);border-radius:3px}.source .c-pend{color:#4a5563}.paragraph-progress{color:var(--muted);font-size:.875rem}.typing textarea{font-family:var(--mono);resize:vertical;min-height:140px;font-size:1.1rem;line-height:1.7}.typing textarea:disabled{background:var(--surface-alt)}.notice{color:#6b4700;background:#fff7e0;border:1px solid #f1d98a;border-radius:8px;padding:10px 14px}.comparison{font-family:var(--mono);white-space:pre-wrap;word-break:break-word;line-height:1.8}.badge-card{align-items:flex-start;gap:16px;display:flex}.badge-icon{color:#fff;border-radius:16px;flex:none;place-items:center;width:64px;height:64px;font-size:1.3rem;font-weight:800;display:grid}.badge-icon.t1{background:var(--horizon-blue)}.badge-icon.t2{background:var(--deep-blue)}.badge-icon.t3{background:var(--legend-blue)}.badge-icon.locked{color:#fff;background:#c4ccd6}.badge-icon.honors{box-shadow:0 0 0 4px var(--uma-gold)}.reasons{color:var(--muted);margin:8px 0 0;padding-left:18px}table{border-collapse:collapse;border:1px solid var(--border);border-radius:var(--radius);background:#fff;width:100%;overflow:hidden}th,td{text-align:left;border-bottom:1px solid var(--border);padding:10px 12px;font-size:.925rem}th{background:var(--surface-alt);color:var(--legend-blue)}tr:last-child td{border-bottom:0}.table-wrap{overflow-x:auto}.lesson-card{flex-direction:column;gap:8px;display:flex}.lesson-card .num{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.8rem}.copy-block{font-family:var(--mono);white-space:pre-wrap;background:var(--surface-alt);border:1px solid var(--border);border-radius:8px;padding:14px;font-size:.95rem}.progress{background:var(--surface-alt);border-radius:999px;height:10px;overflow:hidden}.progress>div{background:var(--uma-green);height:100%}.celebrate{border:1px solid var(--uma-gold);background:linear-gradient(135deg,#fff9df,#fff)}