.signin{color:var(--navy);text-decoration:none}.signupNav{background:var(--navy);color:#fff;white-space:nowrap;border-radius:30px;padding:11px 16px;font-size:13px;font-weight:800;text-decoration:none}.secondaryAction{color:var(--navy);white-space:nowrap;border-bottom:1px solid #9cb0ae;padding:8px 0;font-weight:800;text-decoration:none}@media (width<=760px){.navlinks{display:none}.signupNav{padding:10px 13px}.heroActions{flex-wrap:wrap}}.lessonOverlay{z-index:100;background:#001b26cc;place-items:center;padding:24px;display:grid;position:fixed;inset:0;overflow:auto}.interactiveLesson{color:#123640;background:#fffdf8;border-radius:24px;width:min(1080px,100%);max-height:94vh;padding:30px;overflow:auto;box-shadow:0 30px 100px #00131b}.interactiveLesson>header{border-bottom:1px solid #dfe6e2;justify-content:space-between;align-items:start;gap:20px;padding-bottom:20px;display:flex}.interactiveLesson>header h2{margin:5px 0;font-family:Georgia,serif;font-size:36px}.interactiveLesson>header>button{background:#edf2ef;border:0;border-radius:50%;width:40px;height:40px;font-size:24px}.lessonSteps{grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px;display:grid}.lessonSteps article{border:1px solid #dbe4e1;border-radius:16px;flex-direction:column;gap:13px;padding:20px;display:flex}.lessonSteps article>small{color:#008c7a;letter-spacing:1px;font-weight:900}.lessonSteps h3{margin:0;font-size:20px}.lessonSteps p{color:#536e74;line-height:1.55}.lessonSteps article>button,.choiceGrid button,.submitActivity{color:#fff;background:#0a3440;border:0;border-radius:9px;padding:12px;font-weight:800}.localExample{background:#edf7f3;border-radius:10px;gap:6px;padding:13px;font-size:13px;line-height:1.4;display:grid}.choiceGrid{gap:9px;display:grid}.choiceGrid button{color:#173b44;text-align:left;background:#eef2ef;border:2px solid #0000}.choiceGrid button.selected{background:#ddf4ec;border-color:#008c7a}.lessonSteps label{font-size:13px;font-weight:800;line-height:1.45}.lessonSteps textarea{resize:vertical;width:100%;min-height:130px;font:inherit;border:1px solid #cbd9d5;border-radius:10px;margin-top:10px;padding:12px}.assessmentNotice{background:#fff1d5;border-radius:10px;justify-content:space-between;gap:10px;padding:12px;font-size:12px;display:flex}.submitActivity{color:#092a36!important;background:#eead38!important}.lessonFeedback{color:#874a00;background:#fff0e3;border-radius:10px;padding:12px;line-height:1.45}.lessonFeedback.success{color:#17633f;background:#e4f5eb}@media (width<=850px){.lessonSteps{grid-template-columns:1fr}.interactiveLesson{padding:22px}.interactiveLesson>header h2{font-size:29px}}.syncTutor{z-index:120;color:#fff;background:#082a35;border:1px solid #ffffff2e;border-radius:18px;grid-template-columns:68px 1fr auto;align-items:center;gap:13px;width:min(720px,100% - 32px);padding:10px 14px;display:grid;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 18px 60px #00131bcc}.syncAvatar{background:#eead38;border-radius:14px;height:68px;overflow:hidden}.syncAvatar img{object-fit:cover;object-position:top;width:100%;height:100%}.syncCopy{gap:3px;min-width:0;display:grid}.syncCopy small{color:#c9db65;letter-spacing:1.2px;font-size:9px;font-weight:900}.syncCopy b{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.syncCopy span{color:#c4d4d8;white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.syncTutor>button{color:#082a35;background:#eead38;border:0;border-radius:10px;padding:11px;font-weight:900}.syncWave{align-items:center;gap:2px;height:10px;display:flex}.syncWave i{background:#69c8bc;border-radius:3px;width:3px;height:4px;display:block}.syncTutor.isSpeaking .syncAvatar{animation:.8s ease-in-out infinite syncTalk}.syncTutor.isSpeaking .syncWave i{animation:.55s ease-in-out infinite syncWave}.syncTutor.isSpeaking .syncWave i:nth-child(2),.syncTutor.isSpeaking .syncWave i:nth-child(4){animation-delay:.12s}.syncTutor.isSpeaking .syncWave i:nth-child(3){animation-delay:.24s}@keyframes syncTalk{50%{transform:translateY(-4px)scale(1.03)}}@keyframes syncWave{50%{background:#eead38;height:10px}}@media (width<=850px){.syncTutor{grid-template-columns:54px 1fr auto}.syncAvatar{height:54px}.syncCopy span{display:none}}@media (prefers-reduced-motion:reduce){.syncTutor.isSpeaking .syncAvatar,.syncTutor.isSpeaking .syncWave i{animation:none}}