/* Reference library and Test Series — existing blue/orange branding. */
[hidden]{display:none!important}.home-test-series,.test-series-page,.gk-test-page{padding-top:48px;padding-bottom:56px}.home-test-series .section-heading{align-items:center;gap:24px}.test-series-page h1,.gk-test-page h1{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:12px 0 18px}.test-series-page p,.gk-test-page p{line-height:1.75}.exam-grid{margin-top:24px}.exam-card{display:flex;flex-direction:column;align-items:flex-start}.exam-card b{margin-top:auto;padding-top:18px}.exam-label{font-size:14px;color:#52637c;margin-top:14px}.exam-card h3{margin-top:10px}.exam-card .tool-icon{color:#F89F2F;background:#fff3e3}.gk-feature{display:grid;grid-template-columns:minmax(0,2fr) minmax(220px,1fr);gap:36px;padding:32px;border:1px solid #dce5f1;border-top:4px solid #F89F2F;border-radius:18px;background:#f3f7fd;margin:30px 0}.gk-feature h2{color:#2256A6;font-size:28px;margin:12px 0}.gk-feature p{margin-bottom:16px}.gk-facts{display:flex;flex-direction:column;justify-content:center;gap:12px;padding:24px;background:#fff;border-radius:14px;color:#2256A6}.gk-facts strong{font-size:64px;line-height:1}.gk-facts span{color:#45566f}.practice-sets{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin:22px 0 42px}.practice-sets a{display:grid;gap:8px;padding:20px;border:1px solid #dce5f1;border-radius:12px;color:#2256A6;background:white}.practice-sets a:hover{border-color:#2256A6;background:#f3f7fd}.practice-sets span{font-size:14px;color:#52637c}.exam-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.study-panel{border:1px solid #dce5f1;border-radius:16px;padding:28px;background:white}.study-panel h2{color:#2256A6;margin:0 0 16px;font-size:24px}.study-panel p{margin:14px 0;line-height:1.8}.study-panel ul{padding-left:24px}.study-panel li{margin:12px 0;line-height:1.75}.related-study-links{display:grid;gap:14px;margin:24px 0}.related-study-links a{border-bottom:1px solid #dce5f1;padding-bottom:12px;color:#2256A6;font-weight:600}.expanded-reference .guide-toc{max-height:calc(100vh - 135px);overflow-y:auto}.reference-toolbar{display:flex;gap:16px;align-items:flex-end;margin:24px 0}.reference-toolbar label{flex:1;display:grid;gap:8px;color:#2256A6;font-weight:600}.reference-toolbar input{box-sizing:border-box;width:100%;padding:13px 16px;border:1px solid #a9bad1;border-radius:10px;background:#fff;color:#243750;font:inherit}.reference-toolbar .button{margin:0;min-height:48px}.back-top{display:inline-block;font-size:14px;margin-top:16px}.table-scroll{max-width:100%;overflow-x:auto}.expanded-reference .guide-content table{min-width:400px}.reference-topic h2{overflow-wrap:anywhere}.reference-topic .formula-box{overflow-x:auto;white-space:normal;overflow-wrap:anywhere}.test-context{font-size:14px;color:#52637c}.gk-test-page{max-width:1080px}.quiz-toolbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:24px}.quiz-toolbar p{font-weight:600;color:#2256A6}#quiz-progress-bar{display:block;width:100%;height:9px;accent-color:#2256A6;margin:12px 0 28px}.question-card{min-width:0;margin:0 0 26px;padding:20px 24px 24px;border:1px solid #d3deed;border-radius:14px;background:white}.question-card legend{box-sizing:border-box;max-width:100%;padding:0 8px;font-size:18px;line-height:1.55;color:#213d63;font-weight:650}.question-meta{display:block;font-size:14px;font-weight:500;letter-spacing:.01em;color:#63728a;margin-bottom:8px}.question-title{display:block}.question-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:8px}.question-option{display:flex;align-items:flex-start;gap:12px;min-width:0;padding:14px 16px;border:1px solid #dce5f1;border-radius:10px;background:#f9fbfe;font-size:16px;line-height:1.5;cursor:pointer}.question-option input{flex:0 0 auto;width:18px;height:18px;margin:3px 0 0;accent-color:#2256A6}.question-option:has(input:checked){border-color:#2256A6;background:#edf3fc}.question-option.correct-option{border-color:#38774c;background:#f0f8f1}.question-option input:disabled{opacity:1}.answer-explanation{margin-top:16px;padding:16px;background:#f2f6fc;border-radius:10px}.answer-explanation summary{color:#2256A6;font-weight:650;cursor:pointer}.answer-explanation p{margin:10px 0 0}.question-status{font-weight:600;margin-top:14px}.review-correct .question-status{color:#28613a}.review-wrong .question-status{color:#9a3030}.review-skipped .question-status{color:#765016}.quiz-bottom-controls{display:grid;gap:24px}.quiz-pagination,.quiz-actions{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.quiz-actions{justify-content:flex-start;padding-top:20px;border-top:1px solid #dce5f1}.button:disabled{opacity:.5;cursor:not-allowed}.quiz-result{margin-top:36px;border-top:4px solid #F89F2F;background:#f5f8fd}.quiz-result:focus{outline:2px solid #2256A6;outline-offset:4px}.quiz-score{font-size:48px;font-weight:750;color:#2256A6;background:#fff3e3;border-left:4px solid #F89F2F;padding:20px;border-radius:10px}.quiz-score-detail{color:#2256A6;font-weight:650}.quiz-result table{width:100%;min-width:480px;border-collapse:collapse;background:white}.quiz-result caption{text-align:left;color:#2256A6;font-weight:650;padding:14px 0}.quiz-result th,.quiz-result td{padding:12px;border:1px solid #dce5f1;text-align:left}.quiz-result th{background:#edf3fc}.quiz-result .result-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.quiz-sources{margin-top:38px;border-top:1px solid #dce5f1;padding-top:24px;font-size:14px}.quiz-sources h2{font-size:20px}.quiz-sources a{text-decoration:underline}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible,.table-scroll:focus-visible{outline:3px solid #2256A6;outline-offset:3px}.edu-nav{flex-wrap:wrap}
@media(max-width:900px){.expanded-reference .guide-toc{max-height:none}.gk-feature,.exam-detail-grid{grid-template-columns:1fr}.practice-sets{grid-template-columns:repeat(3,minmax(0,1fr))}.reference-toolbar{flex-wrap:wrap}.reference-toolbar label{flex-basis:100%}}
@media(max-width:600px){.home-test-series,.test-series-page,.gk-test-page{padding-top:30px;padding-bottom:36px}.home-test-series .section-heading{display:block}.home-test-series .section-heading>.button{margin-top:16px}.gk-feature,.study-panel{padding:20px}.gk-facts strong{font-size:48px}.practice-sets{grid-template-columns:1fr 1fr;gap:10px}.practice-sets a{padding:16px}.question-options{grid-template-columns:1fr}.question-card{padding:16px 14px}.question-card legend{font-size:17px}.question-option{padding:13px}.quiz-score{font-size:38px}.quiz-toolbar{align-items:flex-start}.quiz-toolbar p{width:100%}.edu-nav{gap:12px;font-size:14px}.header-inner{flex-wrap:wrap;justify-content:center;gap:12px;padding-top:12px;padding-bottom:12px}.reference-toolbar .button{flex:1;font-size:14px}.quiz-pagination .button{flex:1}.quiz-actions .button{flex:1 1 100%}}
@media print{.reference-toolbar,#reference-count,.back-top,#reference-empty,.quiz-toolbar,#quiz-progress-bar,.quiz-bottom-controls,.quiz-sources,.gk-test-page>a,.test-context,.result-actions,#quiz-copy-status,.question-meta+button{display:none!important}.reference-topic[hidden],.question-card[hidden]{display:block!important}.question-card{break-inside:avoid;box-shadow:none;border-color:#aaa}.question-options{grid-template-columns:1fr 1fr}.question-option{padding:8px}.quiz-result{break-before:page}.expanded-reference,.gk-test-page{max-width:none;padding:0}.guide-content{max-width:none}.guide-content section{break-inside:auto}.table-scroll{overflow:visible}.expanded-reference .guide-content table,.quiz-result table{min-width:0}.guide-content td,.guide-content th{min-width:0}.guide-content details::details-content{content-visibility:visible}.quiz-score{font-size:32px}body{-webkit-print-color-adjust:exact;print-color-adjust:exact}}