.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.student-help-trigger{position:fixed;right:18px;bottom:18px;z-index:9000;min-height:48px;padding:0 18px;border:2px solid #fff;border-radius:999px;background:#11283f;color:#fff;font:800 1rem/1 system-ui,sans-serif;box-shadow:0 5px 18px #11283f55;cursor:pointer}.student-help-trigger:hover{background:#1d4667}.student-help-backdrop{position:fixed;inset:0;z-index:9100;display:grid;place-items:center;padding:18px;background:#07131fc7}.student-help-backdrop[hidden]{display:none}.student-help-panel{width:min(620px,100%);max-height:min(760px,92vh);overflow:auto;padding:24px;border-radius:20px;background:#fff;color:#172b3d;box-shadow:0 24px 70px #0007;font-family:system-ui,sans-serif}.student-help-head{display:flex;align-items:start;justify-content:space-between;gap:18px}.student-help-head h2{margin:0;font-size:1.65rem}.student-help-head p{margin:5px 0 0;color:#5c6c78}.student-help-close{width:44px;height:44px;border:1px solid #b9c5ce;border-radius:50%;background:#fff;color:#172b3d;font-size:1.5rem;cursor:pointer}.student-help-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.student-help-actions button,.student-help-result button{min-height:52px;padding:10px 12px;border:1px solid #b9c5ce;border-radius:11px;background:#f3f7f9;color:#172b3d;font:800 .95rem/1.2 system-ui,sans-serif;text-align:left;cursor:pointer}.student-help-actions button:hover,.student-help-actions button:focus-visible,.student-help-result button:hover{border-color:#11283f;background:#e5f5fb}.student-help-actions button[aria-pressed=true]{background:#11283f;color:#fff}.student-help-result{min-height:108px;padding:17px;border-left:5px solid #18afd4;border-radius:10px;background:#edf8fb;line-height:1.55}.student-help-result h3{margin:0 0 7px;font-size:1.05rem}.student-help-result p{margin:0}.student-help-word-form{display:flex;gap:8px;margin-top:10px}.student-help-word-form input{min-width:0;flex:1;min-height:46px;padding:9px 11px;border:1px solid #8da1af;border-radius:8px;font:inherit}.student-help-word-form button{text-align:center;min-height:46px}.student-help-pause{padding:28px;text-align:center}.student-help-pause strong{display:block;font-size:1.4rem}.student-help-pause p{max-width:420px;margin:12px auto 20px}.student-help-pause button{text-align:center}.student-help-note{margin:13px 0 0;color:#687986;font-size:.78rem}.student-help-simple>.site-header,.student-help-simple .topbar,.student-help-simple .lab-nav,.student-help-simple .brand-footer,.student-help-simple .teacher-note,.student-help-simple [class*=progress],.student-help-simple [class*=milestone]{display:none!important}.student-help-simple main{max-width:860px!important;margin-inline:auto!important;background:#fff!important}.student-help-simple main section,.student-help-simple main article{box-shadow:none!important;background-image:none!important}.student-help-simple *{animation:none!important;transition:none!important}.student-help-simple .student-help-trigger{display:block!important}@media(max-width:560px){.student-help-trigger{right:12px;bottom:12px}.student-help-panel{padding:19px;border-radius:15px}.student-help-actions{grid-template-columns:1fr}.student-help-word-form{display:grid}}@media(prefers-reduced-motion:reduce){.student-help-panel *{animation:none!important;transition:none!important}}@media print{.student-help-trigger,.student-help-backdrop{display:none!important}}