:root{color:#1c2430;background:#f4f6f9;font-family:system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{margin:0}.wrap{max-width:760px;margin:0 auto;padding:1.5rem 1rem 3rem}.centered{text-align:center;place-content:center;gap:.5rem;min-height:100vh;padding:2rem;display:grid}.topbar{justify-content:space-between;align-items:center;padding:.5rem 0 1rem;display:flex}.badge{text-transform:uppercase;letter-spacing:.04em;color:#fff;border-radius:999px;padding:.25rem .6rem;font-size:.7rem;font-weight:700}.badge.instructor{background:#6d28d9}.badge.learner{background:#0f766e}.card{background:#fff;border:1px solid #e4e8ee;border-radius:12px;margin-bottom:1rem;padding:1.25rem 1.5rem;box-shadow:0 1px 2px #1018280a}.card h1{margin:0 0 1rem;font-size:1.4rem}.card h2{margin:0 0 .5rem;font-size:1.1rem}.grid{grid-template-columns:auto 1fr;gap:.4rem 1.5rem;margin:0;display:grid}.grid dt{color:#667085}.grid dd{margin:0}.panel-instructor{border-left:4px solid #6d28d9}.panel-learner{border-left:4px solid #0f766e}button{font:inherit;cursor:pointer;background:#fff;border:1px solid #cbd2dc;border-radius:8px;margin:.25rem .5rem .25rem 0;padding:.5rem .9rem}button:disabled{opacity:.55;cursor:not-allowed}.link{font:inherit;cursor:pointer;color:#667085;background:0 0;border:none;margin-left:.75rem;padding:0;text-decoration:underline}.link:hover{color:#1c2430}.muted{color:#667085;font-size:.85rem}.toolbar{flex-wrap:wrap;gap:.5rem;margin-bottom:.5rem;display:flex}select{font:inherit;border:1px solid #cbd2dc;border-radius:6px;padding:.3rem .4rem}.grade-input{align-items:center;gap:.35rem;display:inline-flex}.grade-input input{width:4.5rem;font:inherit;border:1px solid #cbd2dc;border-radius:6px;padding:.3rem .4rem}.grade-input button{margin:0}.submission{width:100%;font:inherit;resize:vertical;border:1px solid #cbd2dc;border-radius:8px;margin-bottom:.5rem;padding:.6rem .75rem;display:block}.submission:disabled{color:#475467;background:#f4f6f9}.grade-banner{color:#0f766e;background:#ecfdf5;border:1px solid #a7f3d0;border-radius:8px;margin:0 0 .75rem;padding:.6rem .9rem;font-weight:700}.submission-view{white-space:pre-wrap;color:#1c2430;background:#f8fafc;border:1px solid #e4e8ee;border-radius:6px;max-width:22rem;margin-top:.4rem;padding:.5rem .6rem;font-size:.85rem}.notice{background:#fffbeb;border:1px solid #fde68a;border-radius:10px;margin-bottom:1rem;padding:.75rem 1rem;font-size:.9rem}.notice ul{margin:.4rem 0 0;padding-left:1.2rem}.notice li{margin:.15rem 0}.notice .link{color:#92400e;margin-left:0;font-weight:600}.notice .link:hover{color:#1c2430}.roster{border-collapse:collapse;width:100%;margin-top:.75rem;font-size:.9rem}.roster th{text-align:left;color:#667085;border-bottom:1px solid #e4e8ee;padding:.3rem .5rem;font-weight:600}.roster td{border-bottom:1px solid #f0f2f5;padding:.3rem .5rem}.roster tbody td{height:2.5rem}code{background:#eef1f6;border-radius:4px;padding:.1rem .35rem;font-size:.85em}summary{cursor:pointer;font-weight:600}.claims,.err{color:#c9d1d9;background:#0d1117;border-radius:8px;margin-top:.75rem;padding:1rem;font-size:.78rem;overflow:auto}.err{color:#b00;background:#fee}