.study-page{min-height:100vh;background:#f6f9ff}.study-nav{display:flex;margin-left:auto}.study-main{padding:54px 0 78px}.study-container{max-width:900px}.study-heading{margin:0 auto 28px;text-align:center;max-width:720px}.study-eyebrow{margin:0 0 10px;color:var(--blue);font-size:13px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}.study-heading h1{margin:0;color:var(--navy);font-family:Sora,Manrope,Arial,sans-serif;font-size:clamp(36px,5vw,56px);line-height:1.1;letter-spacing:-1.5px}.study-heading>p:last-child{margin:14px 0 0;color:#506381;font-size:16px;line-height:1.65}.study-card{padding:clamp(22px,4vw,42px);border:1px solid #dfe7f5;border-radius:22px;background:#fff;box-shadow:0 18px 52px rgba(24,52,106,.08)}.study-progress-row{display:flex;align-items:center;gap:18px;margin-bottom:26px;color:#60718e;font-size:14px;font-weight:800}.study-progress{height:9px;flex:1;overflow:hidden;border-radius:99px;background:#eaf0fb}.study-progress>div{width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,#3c73ff,#164fd6);transition:width .25s}.study-category{display:inline-flex;align-items:center;min-height:32px;margin:0 0 14px;padding:0 12px;border-radius:99px;background:#edf3ff;color:#164fd6;font-size:13px;font-weight:800}.study-card h2{margin:0 0 22px;color:#10245d;font-family:Sora,Manrope,Arial,sans-serif;font-size:clamp(22px,3vw,30px);line-height:1.35}.study-illustrations{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 18px}.study-illustrations:empty{display:none}.study-illustrations img{max-width:100%;max-height:320px;object-fit:contain;border:1px solid #e3eaf5;border-radius:12px}.study-answers{display:grid;gap:12px}.study-answer{width:100%;min-height:60px;display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:center;padding:14px 16px;border:1px solid #dfe6f1;border-radius:13px;background:#fff;color:#24375f;text-align:left;font:700 15px/1.55 Manrope,Arial,sans-serif;cursor:pointer;transition:background .15s,border-color .15s,color .15s}.study-answer:hover:not(:disabled){border-color:#91b0ff;background:#f7f9ff}.study-answer-letter{width:30px;height:30px;display:grid;place-items:center;border:1px solid #c8d2e3;border-radius:50%;color:#63738f;font-size:13px;font-weight:900}.study-answer.selected{border-color:#769aff;background:#f2f6ff;color:#164fd6}.study-answer.is-correct{border-color:#39a76b;background:#eaf8ef;color:#126d38}.study-answer.is-correct .study-answer-letter{border-color:#39a76b;color:#126d38}.study-answer.is-wrong{border-color:#dc6e73;background:#fff0f0;color:#a8242c}.study-answer.is-wrong .study-answer-letter{border-color:#dc6e73;color:#a8242c}.study-answer:disabled{cursor:default;opacity:1}.study-feedback{min-height:25px;margin:16px 0 0;font-weight:800;line-height:1.5}.study-feedback.correct{color:#138a43}.study-feedback.wrong{color:#c53030}.study-feedback.notice{color:#526783}.study-explanation{margin-top:4px;padding:18px 20px;border:1px solid #dce7fa;border-radius:13px;background:#f7faff}.study-explanation h3{margin:0 0 7px;color:#15316d;font-family:Sora,Manrope,Arial,sans-serif;font-size:17px}.study-explanation p{margin:0;color:#405273;line-height:1.7}.study-controls{display:flex;justify-content:flex-end;gap:12px;margin-top:22px}.study-controls button{min-height:48px}.study-controls button:disabled{cursor:not-allowed;opacity:.5}.study-footnote{margin:18px 0 0;color:#73819a;text-align:center;font-size:13px;line-height:1.6}@media(max-width:760px){.study-nav{position:static;display:flex;height:auto;flex-direction:row;gap:10px;padding:0;border:0;background:transparent;box-shadow:none}.study-nav .nav-link{height:auto;font-size:12px;white-space:normal;text-align:right}.study-nav .nav-link::after{display:none}}@media(max-width:620px){.study-main{padding:32px 0 48px}.study-nav{gap:8px}.study-progress-row{gap:12px}.study-answer{grid-template-columns:30px 1fr;padding:12px}.study-controls{flex-direction:column}.study-controls button{width:100%;justify-content:center}}
.study-main{padding-top:46px;padding-bottom:68px}.study-container{max-width:820px}.study-heading{margin-bottom:24px}.study-card{padding:clamp(20px,3.4vw,34px)}.study-progress-row{margin-bottom:22px}.study-category{min-height:30px;margin-bottom:12px}.study-card h2{margin-bottom:18px;font-size:clamp(21px,2.7vw,27px)}.study-illustrations img{max-height:280px}.study-answers{gap:9px}.study-answer{min-height:52px;grid-template-columns:30px 1fr;gap:11px;padding:11px 14px;font-size:14px;line-height:1.5}.study-answer-letter{width:28px;height:28px}.study-feedback{margin-top:14px}.study-explanation{padding:16px 18px}.study-controls{margin-top:18px}.study-controls button{min-height:46px}@media(max-width:620px){.study-answer{padding:10px 12px}}
.study-controls #nextQuestionButton{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:0 22px;border:1px solid #c7d7ff;border-radius:13px;background:linear-gradient(135deg,#fff 0%,#edf3ff 100%);color:#164fd6;font-weight:900;box-shadow:0 7px 18px rgba(22,79,214,.12);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease}.study-controls #nextQuestionButton:hover:not(:disabled){transform:translateY(-2px);border-color:#8eafff;background:linear-gradient(135deg,#f8faff 0%,#e3edff 100%);box-shadow:0 11px 24px rgba(22,79,214,.2)}.study-controls #nextQuestionButton:active:not(:disabled){transform:translateY(0);box-shadow:0 4px 10px rgba(22,79,214,.14)}.study-controls #nextQuestionButton:focus-visible{outline:3px solid rgba(60,115,255,.35);outline-offset:3px}