.lesson-entry{border:1px solid #2d8495;background:#0c222b;color:#9de9fb;border-radius:8px;padding:11px 13px;font-weight:800;font-size:11px;letter-spacing:.04em;cursor:pointer}
.course-panel>.lesson-entry{width:100%;display:flex;justify-content:space-between}
.quiz-head[hidden],.question-card[hidden],.lesson-studio[hidden]{display:none!important}
.lesson-studio{padding:12px;color:#e7f0f4;min-width:0}
.lesson-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;color:#a9bdc7;font-size:12px}
.lesson-toolbar button,.lesson-test #lessonNext,.lesson-retry{padding:10px 13px;border:1px solid #27879b;border-radius:8px;background:#102b36;color:#a8efff;font-weight:800;cursor:pointer}
.lesson-layout{display:grid;grid-template-columns:minmax(180px,235px) minmax(0,1fr);gap:12px}
.lesson-list{max-height:calc(100vh - 145px);overflow:auto;display:flex;flex-direction:column;gap:4px;padding:6px;background:#0a1219;border:1px solid #223543;border-radius:12px}
.lesson-list button{display:flex;flex-direction:column;align-items:start;text-align:left;gap:3px;border:1px solid transparent;border-radius:7px;background:transparent;color:#a3b5c1;padding:8px;cursor:pointer;font-size:12px;font-weight:750}
.lesson-list button small{color:#6e8c9c;font-size:10px}.lesson-list button.selected{border-color:#238293;background:#11303a;color:#dffaff}
.lesson-content{padding:clamp(15px,3vw,34px);border:1px solid #2b4351;border-radius:13px;background:linear-gradient(140deg,#0f1b23,#0a1016);max-width:900px}
.lesson-content>small,.lesson-test>small{color:#5cd7ed;letter-spacing:.12em;font-size:10px;font-weight:900}
.lesson-content h1{font-size:clamp(24px,3vw,38px);margin:8px 0 18px}.lesson-content h2{font-size:16px;margin:20px 0 7px}
.lesson-content p{line-height:1.65;color:#b9c9d1;margin:5px 0 12px}
.lesson-diagram{display:flex;flex-wrap:wrap;gap:8px;padding:18px;border:1px solid #2b5060;border-radius:10px;background:linear-gradient(95deg,#11252d,#121b29);font-size:11px;font-weight:800}
.lesson-diagram span,.lesson-diagram i{padding:10px;border-radius:6px;background:#102c37;border:1px solid #2a5d6b;font-style:normal}.lesson-diagram i{color:#ffcf75;border-color:#795f34;background:#302518}.lesson-diagram .fvg-zone{color:#96e4fe;background:#153445;border-color:#2a91ae}
.lesson-caution{padding:12px 14px;border-left:3px solid #f6b857;background:#2a211633;border-radius:4px}.lesson-caution b{color:#ffd180}.lesson-caution p{margin-bottom:0}
.lesson-content details{margin:16px 0;color:#9cb5c1;font-size:12px}.lesson-content details summary{cursor:pointer}.lesson-content details a{display:block;margin-top:10px;color:#78dff6}
.lesson-test{margin-top:20px;padding:18px;border:1px solid #355664;border-radius:10px;background:#09171d}.lesson-test h2{margin:10px 0 14px}
.lesson-choices{display:grid;gap:8px}.lesson-choices button{padding:13px;text-align:left;border:1px solid #37505e;background:#101e27;color:#e1edf1;border-radius:8px;cursor:pointer;font-size:13px}.lesson-choices button:hover:not(:disabled){border-color:#66d8ef}.lesson-choices button.correct{border-color:#28b88d;background:#0b302a}.lesson-choices button.wrong{border-color:#e25774;background:#3b1721}.lesson-test #lessonFeedback.good{color:#65e7b5}.lesson-test #lessonFeedback.bad{color:#ff9daf}
.lesson-test button:focus-visible,.lesson-entry:focus-visible,.lesson-list button:focus-visible{outline:2px solid #a9eafe;outline-offset:2px}
@media(max-width:750px){.lesson-layout{display:block}.lesson-list{max-height:125px;display:flex;flex-direction:row;overflow:auto;margin-bottom:12px}.lesson-list button{min-width:155px}.lesson-studio{padding:4px}.lesson-toolbar{flex-wrap:wrap}}