._shell_qjf2e_1{--lab-accent:#16815b;color:#102a43;background:#f3f5f7;min-height:100vh}._hero_qjf2e_1{color:#fff;background:#102a43;grid-template-columns:minmax(0,1.4fr) minmax(280px,.7fr);align-items:center;gap:3rem;padding:clamp(2.2rem,5vw,4.5rem) max(5vw,1rem);display:grid}._hero_qjf2e_1>div>p{color:var(--lab-accent);letter-spacing:.16em;margin:0;font-size:.78rem;font-weight:900}._hero_qjf2e_1 h1{letter-spacing:-.045em;margin:.55rem 0 1rem;font-family:Georgia,serif;font-size:clamp(2.8rem,5.4vw,5.8rem);line-height:.95}._hero_qjf2e_1 h1 span{color:var(--lab-accent)}._hero_qjf2e_1>div>div{color:#dce7ee;max-width:710px;font-size:1.08rem;line-height:1.65}._hero_qjf2e_1 aside{border:1px solid #ffffff35;border-left:6px solid var(--lab-accent);background:#173b5e;border-radius:12px;padding:1.25rem}._hero_qjf2e_1 aside small,._hero_qjf2e_1 aside strong{display:block}._hero_qjf2e_1 aside small{color:#bfd0dc;letter-spacing:.14em;font-size:.68rem}._hero_qjf2e_1 aside strong{margin:.45rem 0;font-size:1.3rem}._hero_qjf2e_1 aside p{color:#d8e5ed;margin:0;line-height:1.5}._levels_qjf2e_1{grid-template-columns:repeat(4,1fr);gap:.65rem;max-width:1280px;margin:1.3rem auto;padding:0 1rem;display:grid}._levels_qjf2e_1 button{text-align:left;color:#304c61;cursor:pointer;background:#fff;border:1px solid #d7e0e6;border-radius:10px;padding:.9rem}._levels_qjf2e_1 button span,._levels_qjf2e_1 button strong{display:block}._levels_qjf2e_1 button span{letter-spacing:.1em;color:#748794;font-size:.68rem;font-weight:900}._levels_qjf2e_1 button strong{margin-top:.25rem}._levels_qjf2e_1 ._activeLevel_qjf2e_1{border-color:var(--lab-accent);box-shadow:0 0 0 2px var(--lab-accent);color:#102a43}._workspace_qjf2e_1{grid-template-columns:minmax(0,1fr) minmax(380px,.86fr);gap:1rem;max-width:1280px;margin:auto;padding:0 1rem 2rem;display:grid}._reading_qjf2e_1,._solve_qjf2e_1{background:#fff;border:1px solid #d7e0e6;border-radius:16px;box-shadow:0 10px 28px #102a4310}._reading_qjf2e_1{overflow:hidden}._readingHead_qjf2e_1{background:#eaf0f3;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.25rem;display:flex}._readingHead_qjf2e_1 span{letter-spacing:.13em;color:#70828f;font-size:.67rem;font-weight:900}._readingHead_qjf2e_1 h2{margin:.25rem 0 0;font-family:Georgia,serif;font-size:1.55rem}._readingHead_qjf2e_1 button{color:#fff;cursor:pointer;background:#102a43;border:0;border-radius:999px;padding:.7rem 1rem;font-weight:800}._passage_qjf2e_1{color:#223e52;margin:0;padding:clamp(1.5rem,4vw,3rem);font-family:Georgia,serif;font-size:clamp(1.2rem,2vw,1.55rem);line-height:1.82}._solve_qjf2e_1{padding:1.25rem}._step_qjf2e_1{align-items:center;gap:.75rem;display:flex}._step_qjf2e_1>span{background:var(--lab-accent);color:#fff;border-radius:50%;flex:none;place-items:center;width:34px;height:34px;font-weight:900;display:grid}._step_qjf2e_1 strong,._step_qjf2e_1 small{display:block}._step_qjf2e_1 small{color:#6b7f8d;margin-top:.12rem;line-height:1.3}._solve_qjf2e_1 h3{margin:1.2rem 0;font-size:1.28rem;line-height:1.42}._choices_qjf2e_1{gap:.65rem;display:grid}._choices_qjf2e_1 button{text-align:left;color:#244156;cursor:pointer;background:#f9fbfc;border:1px solid #ccd8df;border-radius:9px;min-height:52px;padding:.8rem 1rem;font-weight:800;line-height:1.35}._choices_qjf2e_1 button:hover{border-color:var(--lab-accent)}._choices_qjf2e_1 ._right_qjf2e_1{color:#155c3e;background:#e2f3eb;border-color:#188153}._choices_qjf2e_1 ._wrong_qjf2e_1{color:#8c3028;background:#fbe7e4;border-color:#c35246}._proof_qjf2e_1{border-top:1px solid #dfe6ea;margin-top:1.25rem;padding-top:1.2rem}._proof_qjf2e_1 ._choices_qjf2e_1{margin-top:1rem}._reveal_qjf2e_1{border-left:5px solid var(--lab-accent);background:#edf5f1;border-radius:8px;margin-top:1.1rem;padding:1rem}._reveal_qjf2e_1 strong{color:#176444}._reveal_qjf2e_1 p{line-height:1.5}._reveal_qjf2e_1 button{color:#fff;cursor:pointer;background:#102a43;border:0;border-radius:8px;padding:.75rem 1rem;font-weight:900}@media (width<=900px){._hero_qjf2e_1,._workspace_qjf2e_1{grid-template-columns:1fr}._levels_qjf2e_1{grid-template-columns:1fr 1fr}}@media (width<=560px){._levels_qjf2e_1{grid-template-columns:1fr}._readingHead_qjf2e_1{flex-direction:column;align-items:flex-start}._passage_qjf2e_1{font-size:1.18rem}._hero_qjf2e_1 h1{font-size:3rem}}