:root{--bg-base:#0b0f14;--bg-elevated:#141a21;--bg-overlay:#1c232c;--bg-subtle:#0f141a;--text-primary:#e8ecef;--text-secondary:#a7b1bd;--text-muted:#6c7684;--text-inverse:#0b0f14;--border-subtle:#1e2730;--border-default:#2a3440;--border-strong:#3d4a59;--aurora-400:#7fd4a8;--aurora-500:#5bc390;--aurora-600:#3da374;--ember-400:#e8a96b;--ember-500:#d8934f;--warning:#d4a64a;--error:#d97066;--font-display:"Space Grotesk", Inter, system-ui, sans-serif;--font-body:Inter, system-ui, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, monospace;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-pill:999px;--gutter:clamp(20px, 4vw, 48px);--ease:cubic-bezier(.2, .7, .2, 1);--duration:.18s;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*,:before,:after{box-sizing:border-box}body{background:var(--bg-base);color:var(--text-primary);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;line-height:1.5}a{color:var(--aurora-400);text-decoration:none}a:hover{color:var(--aurora-600)}summary{cursor:pointer}:focus-visible{outline:2px solid var(--aurora-400);outline-offset:2px}.page{max-width:1280px;padding:clamp(28px, 4vw, 48px) var(--gutter);margin:0 auto}.page-title{font-family:var(--font-display);letter-spacing:-.02em;margin:0 0 6px;font-size:clamp(28px,4vw,36px);font-weight:600}.page-lead{color:var(--text-secondary);margin:0 0 32px;font-size:15px}.eyebrow{font-family:var(--font-display);letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin:0 0 10px;font-size:12px;font-weight:600}.mono{font-family:var(--font-mono)}.muted{color:var(--text-muted)}.card{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-lg)}.card-header{border-bottom:1px solid var(--border-subtle);flex-wrap:wrap;align-items:center;gap:12px;padding:12px 18px;display:flex}.card-title{font-family:var(--font-display);font-size:14px;font-weight:600}.card--error{border-color:var(--error)}.card--warning{border-color:var(--warning)}.card--success{border-color:var(--aurora-600)}.code-block{background:var(--bg-subtle);border:1px solid var(--border-subtle);border-radius:var(--radius-md);font-family:var(--font-mono);color:var(--text-secondary);white-space:pre-wrap;margin:0;padding:14px 16px;font-size:12.5px;line-height:1.6}.btn{border-radius:var(--radius-md);color:var(--text-primary);cursor:pointer;transition:background-color var(--duration) var(--ease), color var(--duration) var(--ease);background:0 0;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-family:inherit;font-size:14px;font-weight:600;display:inline-flex}.btn-primary{background:var(--aurora-400);color:var(--text-inverse)}.btn-primary:hover:not(:disabled){background:var(--aurora-600)}.btn-primary:disabled{background:var(--bg-overlay);color:var(--text-muted);cursor:not-allowed}.btn-secondary{border-color:var(--border-default)}.btn-secondary:hover:not(:disabled){background:var(--bg-overlay)}.btn-secondary:disabled{color:var(--text-muted);cursor:not-allowed;opacity:.6}.btn-ghost{color:var(--text-muted);padding:8px 14px}.btn-ghost:hover:not(:disabled){color:var(--text-primary)}.btn-sm{padding:6px 12px;font-size:13px}.btn-block{width:100%}.field{flex-direction:column;gap:7px;display:flex}.field-label{color:var(--text-secondary);font-size:14px}.input{background:var(--bg-overlay);border:1px solid var(--border-default);width:100%;color:var(--text-primary);border-radius:var(--radius-md);transition:border-color var(--duration) var(--ease);padding:11px 14px;font-family:inherit;font-size:14px}.input:focus{border-color:var(--aurora-400);outline:none}.tag{border-radius:var(--radius-sm);background:var(--bg-overlay);color:var(--text-secondary);padding:2px 8px;font-size:11px;line-height:1.5;display:inline-block}.tag--muted{color:var(--text-muted)}.pill{border-radius:var(--radius-pill);background:var(--bg-overlay);color:var(--text-secondary);align-items:center;gap:8px;padding:5px 13px;font-size:12px;display:inline-flex}.pill--outline{background:var(--bg-subtle);border:1px solid var(--border-default);font-weight:500}.dot{border-radius:var(--radius-pill);background:var(--tone,var(--text-muted));flex:none;width:7px;height:7px}.dot--lg{width:9px;height:9px}.tone-success{color:var(--aurora-400);--tone:var(--aurora-400)}.tone-error{color:var(--error);--tone:var(--error)}.tone-warning{color:var(--warning);--tone:var(--warning)}.tone-neutral{color:var(--text-muted);--tone:var(--text-muted)}.status{align-items:center;gap:7px;font-size:13px;font-weight:500;display:inline-flex}.teacher-page>a:first-child{margin-bottom:18px;display:inline-block}.teacher-page h2{font-family:var(--font-display);margin:0 0 12px;font-size:18px}.teacher-page .card-header h2{margin:0}.teacher-section{padding:22px}.teacher-section>.btn{margin-top:14px}.teacher-stack{flex-direction:column;gap:20px;min-width:0;display:flex}.teacher-editor-grid{grid-template-columns:minmax(0,1fr) 300px;align-items:start;gap:28px;display:grid}.teacher-actions,.teacher-filters{flex-wrap:wrap;align-items:end;gap:14px;margin:22px 0;display:flex}.teacher-filters .field{flex:135px;font-size:12px}.teacher-stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.teacher-stats>.card{padding:20px}.teacher-stats strong{font-family:var(--font-display);margin-top:12px;font-size:34px;display:block}.teacher-stats p{font-size:13px}.teacher-table-wrap{overflow-x:auto}.teacher-table{border-collapse:collapse;text-align:left;width:100%;font-size:14px}.teacher-table th{color:var(--text-muted);font-size:12px;font-weight:500}.teacher-table th,.teacher-table td{border-bottom:1px solid var(--border-subtle);padding:16px 20px}.teacher-table tbody tr:last-child td{border-bottom:none}.teacher-table tbody tr:hover{background:var(--bg-subtle)}.teacher-table td .mono{margin-top:5px;font-size:12px}.teacher-checklist{color:var(--text-secondary);padding:0;font-size:14px;line-height:2.2;list-style:none}.teacher-test,.teacher-version{border-bottom:1px solid var(--border-subtle);gap:12px;padding:16px 0;display:grid}.teacher-test:last-child,.teacher-version:last-child{border-bottom:0}.teacher-dataset-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;display:grid}.teacher-page textarea{resize:vertical}.teacher-page .code-block{overflow-wrap:anywhere;margin-top:16px}@media (width<=900px){.teacher-editor-grid{grid-template-columns:1fr}.teacher-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=480px){.teacher-stats{grid-template-columns:1fr}}.app-header[data-v-73364b5d]{min-height:64px;padding:8px var(--gutter);background:var(--bg-elevated);border-bottom:1px solid var(--border-subtle);flex-wrap:wrap;align-items:center;gap:16px;display:flex}.brand[data-v-73364b5d]{font-family:var(--font-display);color:var(--text-primary);align-items:center;gap:10px;font-size:17px;font-weight:600;display:flex}.brand[data-v-73364b5d]:hover{color:var(--text-primary)}.brand-dot[data-v-73364b5d]{border-radius:var(--radius-pill);background:var(--aurora-400);width:9px;height:9px}.brand-dot--teacher[data-v-73364b5d]{background:var(--ember-400)}.app-nav[data-v-73364b5d]{gap:4px;margin-left:12px;display:flex}.nav-link[data-v-73364b5d]{border-radius:var(--radius-md);color:var(--text-secondary);transition:background-color var(--duration) var(--ease), color var(--duration) var(--ease);padding:7px 12px;font-size:14px;font-weight:500}.nav-link[data-v-73364b5d]:hover,.nav-link.router-link-exact-active[data-v-73364b5d]{color:var(--text-primary);background:var(--bg-overlay)}.app-user[data-v-73364b5d]{align-items:center;gap:12px;margin-left:auto;display:flex}.user-name[data-v-73364b5d]{color:var(--text-secondary);align-items:center;gap:8px;font-size:13px;display:inline-flex}.tag--teacher[data-v-73364b5d]{color:var(--ember-400)}