:root{--blue:#3e86d6;--sky:#9fc4e8;--lime:#a9cc3e;--ink:#28313e;--bg-blue:#edf4fc;--bg-lime:#eff4d8}*{box-sizing:border-box}body{color:var(--ink);background:#fff;margin:0;font-family:Nunito,system-ui,sans-serif}a{color:var(--blue)}header.site{background:var(--bg-blue);border-bottom:2px solid var(--sky);justify-content:space-between;align-items:center;padding:12px 24px;font-family:Montserrat,system-ui,sans-serif;display:flex}header.site .brand{color:var(--blue);font-size:1.1rem;font-weight:800;text-decoration:none}main{box-sizing:border-box;width:100%;margin:0 auto;padding:24px}h1,h2,h3{color:var(--ink);font-family:Montserrat,system-ui,sans-serif}.grade-row td{background:var(--bg-blue);color:#5a6b7d;text-transform:uppercase;letter-spacing:.02em;padding:3px 10px;font-size:.7rem;font-weight:700}.grade-divider{color:#5a6b7d;text-transform:uppercase;letter-spacing:.02em;grid-column:1/-1;margin-top:4px;font-size:.7rem;font-weight:700}.grade-divider:first-child{margin-top:0}.leaderboard-grade{color:#5a6b7d;text-transform:uppercase;letter-spacing:.02em;background:var(--bg-blue);padding:3px 10px;font-size:.66rem;font-weight:700}table{border-collapse:collapse;width:100%;margin:12px 0}th,td{text-align:left;border:1px solid #d6e3f2;padding:6px 10px}th{background:var(--bg-blue)}.col-sep{border-left:2px solid #8aa3bd}.card{background:#fff;border:1px solid #d6e3f2;border-radius:10px;margin-bottom:16px;padding:16px}.card-link{color:inherit;text-decoration:none;display:block}.card-link:hover{border-color:var(--blue)}form.inline{flex-wrap:wrap;align-items:end;gap:8px;display:flex}label{margin-bottom:2px;font-size:.85rem;display:block}input,select,textarea,button{border:1px solid #b9cbe0;border-radius:6px;padding:6px 8px;font-family:inherit;font-size:1rem}button{background:var(--blue);color:#fff;cursor:pointer;border:none;padding:8px 14px;font-weight:600}button:hover{opacity:.9}button.secondary{background:var(--sky);color:var(--ink)}.tabs{gap:4px;margin-bottom:12px;display:flex}.tabs a{color:var(--ink);background:var(--bg-blue);border-radius:6px 6px 0 0;padding:6px 14px;text-decoration:none}.tabs a.active{background:var(--blue);color:#fff}.error{color:#b3261e;background:#fbeceb;border:1px solid #f0c9c6;border-radius:6px;margin:8px 0;padding:8px 12px}.muted{color:#5a6b7d;font-size:.9rem}.xo-grid{grid-template-columns:repeat(5,48px);gap:4px;display:grid}.xo-cell{cursor:pointer;-webkit-user-select:none;user-select:none;background:#fff;border:1px solid #b9cbe0;border-radius:6px;justify-content:center;align-items:center;width:48px;height:48px;font-weight:700;display:flex}.xo-cell.correct{background:var(--bg-lime);border-color:var(--lime);color:#5c7a1e}.xo-cell.wrong{color:#b3261e;background:#fbeceb;border-color:#f0c9c6}.diag-strike{background-color:#fbeceb;background-image:linear-gradient(135deg,#0000 calc(50% - 1px),#b3261e calc(50% - 1px) calc(50% + 1px),#0000 calc(50% + 1px));border-color:#f0c9c6}.xo-cell.readonly{cursor:default}.xo-grid-compact{grid-template-columns:repeat(5,20px);gap:2px}.xo-grid-compact .xo-cell{border-radius:3px;width:20px;height:20px;font-size:10px;font-weight:700}.search-input{width:100%;max-width:360px;margin-bottom:8px}.search-results{flex-direction:column;gap:4px;max-width:360px;margin-bottom:16px;display:flex}.search-result{cursor:pointer;text-align:left;background:#fff;border:1px solid #d6e3f2;border-radius:6px;justify-content:space-between;padding:6px 10px;display:flex}.search-result:hover{border-color:var(--blue)}.search-result.active{background:var(--bg-blue);border-color:var(--blue);font-weight:700}.board-screen{grid-template-columns:1fr 180px;align-items:start;gap:16px;display:grid}.board-screen-teams{grid-template-columns:repeat(auto-fill,120px);justify-content:start;gap:8px;display:grid}.board-screen-team{border:1px solid #d6e3f2;border-radius:8px;flex-direction:column;gap:4px;padding:6px;display:flex}.board-screen-team .header{grid-template-columns:repeat(5,20px);gap:2px;display:grid}.board-screen-team .name{text-overflow:ellipsis;white-space:nowrap;grid-column:1/5;align-self:end;font-size:.72rem;font-weight:600;overflow:hidden}.board-screen-team .score{text-align:right;white-space:nowrap;border-radius:4px;grid-column:5;padding:0 3px;font-size:.8rem;font-weight:700}.leaderboard{border:1px solid #d6e3f2;border-radius:8px;font-size:.82rem;position:sticky;top:16px;overflow:hidden}.leaderboard-row{border-bottom:1px solid #eaf0f8;justify-content:space-between;padding:6px 10px;display:flex}.leaderboard-row:nth-child(odd){background:var(--bg-blue)}.optom-panel{border:1px solid #d6e3f2;border-radius:8px;padding:10px 12px}.optom-pills{flex-wrap:wrap;gap:4px;margin-top:8px;display:flex}.optom-pill{width:32px;height:28px;color:var(--ink);cursor:pointer;background:#fff;border:1px solid #b9cbe0;border-radius:6px;padding:0;font-size:.8rem;font-weight:600}.optom-pill:disabled{cursor:default}.optom-pill.draft-correct{border-color:var(--lime);color:#5c7a1e;border-width:2px}.optom-pill.draft-wrong{color:#b3261e;border-width:2px;border-color:#e26b63}.optom-table{border-collapse:collapse;font-size:.78rem}.optom-table th,.optom-table td{text-align:center;white-space:nowrap;border:1px solid #d6e3f2;padding:3px 5px}.optom-table td.task-empty{color:#c3ccd6}.optom-table td.task-correct{background:var(--bg-lime);color:#5c7a1e}.optom-table td.task-wrong{color:#b3261e;background:#fbeceb}.optom-table td.team-name{text-align:left;background:#fff;font-weight:600;position:sticky;left:0}.optom-table td.total{font-weight:700}.p5m2-tasks{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.p5m2-task{background:#fff;border:1px solid #b9cbe0;border-radius:6px;flex-direction:column;gap:2px;width:56px;padding:3px;display:flex}.p5m2-head{justify-content:space-between;align-items:center;gap:2px;padding:0 1px;font-size:.65rem;display:flex}.p5m2-head .score{font-size:.78rem;font-weight:700}.p5m2-task.touched{background:#fbeceb;border-color:#f0c9c6}.p5m2-task.solved{background:var(--bg-lime);border-color:var(--lime)}.p5m2-buttons{gap:2px;display:flex}.p5m2-buttons button{border-radius:4px;flex:1;padding:4px 0;font-size:.75rem;font-weight:700;line-height:1}.p5m2-num{color:#5a6b7d;cursor:pointer;background:0 0;border:none;margin:-4px 0 -4px -2px;padding:4px 6px 4px 2px;font-size:.65rem;font-weight:400;line-height:1}.p5m2-num:not(:disabled):hover,.p5m2-num:not(:disabled):active{color:#b3261e;text-decoration:underline}.p5m2-num:disabled{cursor:default}.leaderboard-row .place{color:#5a6b7d;width:24px;margin-right:8px;display:inline-block}@media (max-width:640px){header.site{flex-wrap:wrap;row-gap:6px;padding:10px 12px}header.site .brand{font-size:.95rem}.header-user{display:none}main{padding:12px}h1{font-size:1.4rem}table{-webkit-overflow-scrolling:touch;display:block;overflow-x:auto}.card{padding:12px}form.inline{gap:6px}.board-screen{grid-template-columns:1fr}.leaderboard{position:static}.search-input,.search-results{max-width:none}}