.ibsil-anchor{width:100%;scroll-margin-top:90px}
.ibsil{font-family:Arial,Helvetica,sans-serif;color:#102a43;width:100%;max-width:none;margin:16px 0;background:#fff;border:1px solid #d5dbe5;border-radius:12px;box-shadow:0 2px 7px rgba(16,42,67,.10);box-sizing:border-box;overflow:hidden}
.ibsil *{box-sizing:border-box}
.ibsil-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:18px 20px;background:#f5f8fb;border-bottom:1px solid #d5dbe5}
.ibsil-category{font-size:12px;font-weight:800;letter-spacing:.08em;color:#725b00;margin:0 0 6px}
.ibsil-head h2{margin:0 0 7px;font-size:23px;line-height:1.25;color:#08264a}
.ibsil-subtitle{margin:0;font-size:13px;color:#486581;line-height:1.5}
.ibsil-score{padding:12px 14px;border-radius:9px;background:#eaf0f5;font-weight:800;color:#08264a;white-space:nowrap;flex-shrink:0}
.ibsil-body{padding:18px 20px 22px}
.ibsil-question{font-size:16px;line-height:1.5;margin:0 0 6px;color:#102a43}
.ibsil-help{font-size:13px;line-height:1.5;margin:0 0 13px;color:#526879}
.ibsil-tools,.ibsil-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.ibsil-tools{margin:0 0 12px}.ibsil-actions{margin:14px 0 0}
.ibsil .ibsil-btn{appearance:none;border:1px solid #aab5c5;border-radius:6px;padding:10px 13px;color:#102a43;background:#edf2f7;font-size:13px;line-height:1.3;font-weight:700;cursor:pointer;text-transform:none!important;letter-spacing:normal!important}
.ibsil .ibsil-btn.is-active,.ibsil .ibsil-primary{background:#142b44;color:#fff;border-color:#142b44}
.ibsil .ibsil-btn:focus-visible{outline:3px solid #78a8d4;outline-offset:2px}
.ibsil-graphbox{width:100%;overflow-x:auto;overscroll-behavior-x:contain}
.ibsil-svg{display:block;width:100%;height:auto;min-width:580px;touch-action:none;background:#fff}
.ibsil-student-line{stroke:#111;stroke-width:3;stroke-linecap:round;pointer-events:none}
.ibsil-student-line.is-preview{stroke:#244b77;stroke-width:3.3}
.ibsil-handles circle{fill:#fff;stroke:#142b44;stroke-width:2.4;cursor:grab;pointer-events:all}
.ibsil-handles circle:active{cursor:grabbing}
.ibsil-handles .ibsil-drawing-start{fill:#244b77;stroke:#fff;stroke-width:1.8;pointer-events:none}
.ibsil-catcher{cursor:crosshair}
.ibsil-teacher-layer{pointer-events:none}
.ibsil-teacher-note{margin-top:14px;border:1px solid #c9d8e6;border-radius:8px;background:#f8fafc;padding:13px;font-size:14px;line-height:1.45}
.ibsil-teacher-note[hidden],.ibsil-feedback[hidden]{display:none}
.ibsil-teacher-note p{margin:6px 0 0}
.ibsil-feedback{margin:12px 0 0;padding:12px 14px;border:1px solid #c9d8e6;border-radius:8px;font-size:14px;line-height:1.5}
.ibsil-feedback.ibsil-good{background:#e8f7ec;border-color:#4caf50;color:#163d25}
.ibsil-feedback.ibsil-bad{background:#fdecec;border-color:#d9534f;color:#6e1720}
.ibsil-feedback.ibsil-info{background:#edf4ff;border-color:#91afe4}
.ibsil-save{margin:9px 0 0;font-size:13px;color:#486581}
.ibsil-save:empty{display:none}
@media(max-width:760px){.ibsil-head{padding:15px}.ibsil-head h2{font-size:20px}.ibsil-body{padding:14px}.ibsil-svg{min-width:580px}}