:root{font-family:Inter,Pretendard,Noto Sans KR,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#233147;background:#f5f7fa;font-synthesis:none;font-weight:400;font-size:14px;--navy: #121f34;--accent: #16b6a2;--border: #e6eaf0;--muted: #8590a2}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{cursor:not-allowed;opacity:.42}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #64cfc4;outline-offset:3px}input:focus,textarea:focus{outline:2px solid #9fdbd4;outline-offset:1px}button{transition:background .15s,color .15s,border-color .15s}button svg{flex-shrink:0}button:hover:not(:disabled){filter:brightness(.98)}code,pre,kbd{font-family:SFMono-Regular,Consolas,Liberation Mono,monospace}svg{vertical-align:middle;flex-shrink:0}::selection{background:#b9e8e1}.muted-text{color:#8994a3;font-weight:400;font-size:11px}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sidebar{width:246px;background:var(--navy);color:#9ca9bd;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;z-index:30;padding:33px 17px 20px}.brand{display:flex;align-items:center;gap:11px;padding:0 13px 32px;color:#f6f9ff;font-size:29px;font-weight:850;letter-spacing:-1.3px;line-height:1}.brand-dot{color:#31c7b4}.brand small{display:block;color:#8391a9;letter-spacing:1.2px;font-size:8px;font-weight:500;margin-top:11px}.brand-mark{display:grid;grid-template-columns:11px 11px;gap:4px;transform:rotate(-7deg)}.brand-mark span{width:11px;height:11px;background:#27bba7;border-radius:3px}.brand-mark span:nth-child(2){opacity:.45}.brand-mark span:nth-child(3){opacity:.7}.sidebar-label{font-size:11px;display:flex;align-items:center;justify-content:space-between;padding:0 13px 14px;color:#8a98ae}.badge{display:inline-flex;align-items:center;padding:4px 7px;background:#f0f3f7;border:1px solid transparent;color:#718096;border-radius:5px;font-size:10px;line-height:1;font-weight:600;white-space:nowrap}.badge.muted{font-size:8px;letter-spacing:.5px;color:#93a1b5;border-color:#314059;background:#202e45;padding:4px 5px}.badge.type1{background:#e4f5f1;color:#168d7d}.badge.type2{background:#edf0fe;color:#6960bd}.badge.type3{background:#fff2e1;color:#ae762b}.badge.amber{background:#fff5e4;color:#b5873e}.type-nav{display:flex;flex-direction:column;gap:8px;margin-bottom:26px}.type-button{display:flex;align-items:center;text-align:left;width:100%;padding:14px 12px;gap:11px;border-radius:7px;border:1px solid transparent}.type-button>svg{color:#8a9ab4}.type-button>span:nth-child(2){flex:1}.type-button strong{font-size:12px;display:block;font-weight:650;color:#ced5e2}.type-button small{font-size:10px;display:block;margin-top:6px;color:#7f8fa8}.type-button:hover{background:#1d2c43}.type-button.active{background:#203c45;border-color:#285b5e}.type-button.active>svg{color:#43c4b1}.type-button.active strong{color:#8be0d1}.type-button.active small{color:#7caaa7}.type-count{font-size:12px;color:#c3d0dd;font-weight:600}.type-count em{font-size:10px;color:#798aa2;font-style:normal;margin-left:2px}.question-list-heading{display:flex;justify-content:space-between;font-size:10px;padding:0 12px 12px}.question-list-heading span:first-child{color:#a9b4c5;font-weight:600}.question-list-heading span:last-child{color:#667892}.search-field{display:flex;align-items:center;gap:7px;border:1px solid #2b3a50;border-radius:5px;margin:0 8px 12px;padding:8px;color:#71839b}.search-field input{width:100%;min-width:0;background:transparent;border:0;color:#ccd8e7;font-size:10px;outline:none}.search-field input::placeholder{color:#71839b}.search-field:focus-within{border-color:#4c8c89}.search-field input:focus{outline:none}.search-field button{padding:0}.question-list{overflow-y:auto;scrollbar-width:thin;scrollbar-color:#324358 transparent;min-height:110px;flex:1}.question-link{display:flex;align-items:center;gap:10px;text-align:left;width:100%;padding:13px 11px;border-radius:5px;margin-bottom:3px;min-height:43px;font-size:10.5px;line-height:1.5}.question-link:hover{background:#1b2a42}.question-number{font-family:Consolas,monospace;font-size:10px;color:#657892;flex-shrink:0}.question-name{flex:1;letter-spacing:-.2px}.question-link.selected{color:#edf3fa;background:#25354d}.question-link.selected .question-number{color:#66cbbb}.current-dot{height:5px;width:5px;border-radius:50%;background:#3ec4ac;margin:0 4px}.pending-icon{color:#3b4d66}.solved-icon{color:#1ca991}.sidebar-bottom{border-top:1px solid #29374d;padding:20px 11px 0;margin-top:18px}.progress-caption{display:flex;justify-content:space-between;font-size:10px;color:#a5b2c4;align-items:center}.progress-caption strong{font-size:15px;color:#44c4af;font-weight:600}.progress-caption strong span{font-size:10px;font-weight:400;color:#8190a7}.progress-track{height:4px;background:#2b3a51;border-radius:3px;margin-top:12px;overflow:hidden}.progress-track i{display:block;background:#29b9a4;height:100%;border-radius:3px;transition:width .4s}.sidebar-bottom p{font-size:9px;color:#6f819c;display:flex;align-items:center;gap:6px;margin:15px 0 0}.no-search{font-size:11px;padding:20px;color:#8492a8}.main-shell{margin-left:246px}.topbar{height:65px;border-bottom:1px solid #e6eaf0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 32px}.breadcrumb{display:flex;align-items:center;gap:13px;font-size:11px;color:#99a2b0}.breadcrumb strong{color:#435268;font-size:11px;font-weight:550}.breadcrumb svg{color:#c3cad3}.topbar-right{display:flex;align-items:center;gap:24px;color:#7d8797}.topbar-right>a{padding-left:20px;border-left:1px solid #e9edf2}.autosave{display:flex;align-items:center;gap:7px;font-size:10px;color:#8b96a5}.autosave>span{width:5px;height:5px;border-radius:50%;background:#39b59f}.mobile-menu{display:none}.page-intro{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:28px 32px 24px}.eyebrow{font-size:9px;letter-spacing:1.9px;font-weight:650;color:#99a6b6;margin-bottom:9px}h1{font-size:26px;letter-spacing:-1.25px;color:#233149;margin:0;font-weight:750;line-height:1.4}h1>span{color:#1eb19e;margin-left:3px}.page-intro p{font-size:11px;color:#8993a3;margin:8px 0 0;letter-spacing:-.1px}.focus-timer{background:#fff;border:1px solid #e4e9ef;border-radius:8px;display:flex;align-items:center;gap:10px;padding:12px 13px;min-width:194px;box-shadow:0 2px 4px #23314703}.focus-timer>svg{color:#94a0b0}.focus-timer>div{flex:1}.focus-timer small{display:block;font-size:8px;color:#98a2b0;margin-bottom:4px}.focus-timer span{font-family:Consolas,monospace;font-size:19px;color:#45536a;letter-spacing:1px;line-height:1}.focus-timer button{color:#9ca6b5;padding:5px}.focus-timer button:first-of-type{background:#f0f6f4;color:#38a38f;border-radius:4px}.focus-timer.ticking>svg{color:#26a88f}.practice-strip{margin:0 32px 18px;border:1px solid #e4eaf0;border-radius:8px;background:#edf3f6;padding:15px 18px;display:flex;align-items:center;gap:13px}.strip-icon{height:36px;width:36px;border-radius:8px;background:#fff;color:#3c7185;display:grid;place-items:center;border:1px solid #e2eaf0}.practice-strip strong{font-size:12px;color:#40556a;font-weight:650}.practice-strip strong span{font-weight:450;color:#758798;border-left:1px solid #cdd8e0;padding-left:9px;margin-left:9px;font-size:11px}.practice-strip p{margin:5px 0 0;font-size:10px;color:#8a9aa8}.strip-total{margin-left:auto;font-size:10px;color:#7b8a9d;white-space:nowrap}.mini-progress{display:flex;gap:4px;margin-left:2px}.mini-progress i{height:6px;width:13px;border-radius:3px;background:#d3dce4}.mini-progress i.current{background:#a2ccc4}.mini-progress i.done{background:#20ae98}.workspace{margin:0 32px;display:grid;grid-template-columns:minmax(340px,.93fr) minmax(410px,1.17fr);height:calc(100vh - 330px);min-height:680px;max-height:1120px;gap:17px}.problem-panel,.coding-panel{border:1px solid #e1e6ee;border-radius:9px;overflow:hidden;background:#fff;box-shadow:0 3px 12px #27395603;min-width:0;display:flex;flex-direction:column}.problem-heading{padding:23px 23px 20px}.problem-kicker{display:flex;align-items:center;gap:9px;font-size:10px;color:#8a95a4}.solved-label{margin-left:auto;font-size:9px;color:#219d85;display:flex;gap:4px;align-items:center}.problem-heading h2{font-size:19px;font-weight:700;line-height:1.5;letter-spacing:-.7px;color:#27344a;margin:13px 0 12px}.problem-meta{display:flex;gap:16px;align-items:center;font-size:9px;color:#96a0ae}.problem-meta>span{display:flex;align-items:center;gap:4px}.difficulty i{display:inline-block;width:3px;background:#67b6a4;height:6px;border-radius:1px;margin-right:-2px}.difficulty i:nth-child(2){height:9px}.difficulty i:nth-child(3){height:12px;background:#dce5e3;margin-right:4px}.difficulty-중상 i:nth-child(3){background:#67b6a4}.difficulty-상 i{background:#d6a35c!important}.panel-tabs{display:flex;gap:20px;padding:0 23px;border-bottom:1px solid #e9edf2;flex-shrink:0;height:43px}.panel-tabs button{padding:0 1px;position:relative;font-size:10px;display:flex;align-items:center;gap:5px;color:#93a0b1;font-weight:550}.panel-tabs button.active{color:#268d7d}.panel-tabs button.active:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:2px;background:#21ab96;border-radius:2px}.panel-tabs button>span{font-size:8px;border-radius:3px;background:#eff2f5;padding:2px 4px;margin-left:1px;color:#8c9baa}.problem-body{flex:1;overflow:auto;scrollbar-width:thin;scrollbar-color:#dce3eb transparent;padding:24px 23px 21px}.section-label{font-size:11px;letter-spacing:-.2px;font-weight:700;color:#4d5a6e;display:flex;justify-content:space-between;gap:8px;align-items:center}.scenario{font-size:11.5px;line-height:1.95;color:#6f7b8d;word-break:keep-all;margin:11px 0 24px}.steps-heading{margin-top:4px}.step-list{list-style:none;padding:0;margin:15px 0 24px;display:flex;flex-direction:column;gap:12px}.step-list li{display:flex;gap:10px}.step-list li>span{flex-shrink:0;width:18px;height:18px;display:grid;place-items:center;border-radius:50%;font-size:9px;font-weight:650;color:#8090a4;background:#f0f3f7;margin-top:2px}.step-list p{margin:0;font-size:11px;line-height:1.85;color:#6a778b;word-break:keep-all}.dataset-callout{border:1px solid #e7edf2;border-radius:7px;background:#f8fafc;display:flex;align-items:center;gap:11px;padding:14px 12px;margin:0 0 25px}.dataset-callout>svg{color:#69a99c}.dataset-callout>div{flex:1;min-width:0}.dataset-callout strong{display:block;font-size:10px;color:#63748a;margin-bottom:5px}.dataset-callout span{display:block;font-family:Consolas,monospace;color:#506d7e;font-size:10px;overflow-wrap:anywhere}.dataset-callout small{display:block;font-size:9px;color:#9ba6b2;margin-top:5px}.dataset-callout button{color:#9ba8b5;padding:4px}.answer-contract{margin-top:12px;border-top:1px solid #edf0f4}.answer-contract>div{display:flex;align-items:flex-start;gap:13px;padding:11px 0;border-bottom:1px solid #edf0f4}.answer-contract>div>code{display:inline-block;color:#55887e;background:#edf7f3;border-radius:4px;padding:4px 6px;font-size:9px;max-width:110px;overflow-wrap:anywhere;min-width:50px}.answer-contract>div>span{font-size:10px;line-height:1.7;color:#6e7a8a;flex:1}.answer-contract small{display:block;color:#a1aab7;font-size:9px;margin-top:2px}.answer-contract>p{font-size:9px;color:#9da7b5;display:flex;align-items:center;gap:4px;margin:10px 0 0}.answer-contract>p>code{color:#6b9287}.hint-area{margin-top:23px;border:1px solid #f0e9d9;background:#fffcf5;border-radius:6px}.hint-area>button{display:flex;align-items:center;gap:7px;width:100%;padding:12px 11px;text-align:left;font-size:10px;color:#aa8b4f}.hint-area>button>span{flex:1}.hint-area small{font-size:9px;color:#b8a67f}.hint-area p{margin:0 12px;padding:10px 0;border-top:1px solid #f1e9d9;color:#99825d;font-size:10px;line-height:1.9}.hint-area p strong{display:block;font-size:9px;margin-bottom:3px}.topic-tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:19px}.topic-tags span{font-size:9px;color:#a3acb8}.problem-footer{border-top:1px solid #e9edf2;display:flex;align-items:center;justify-content:space-between;padding:12px 21px;flex-shrink:0}.problem-footer button{display:flex;align-items:center;gap:6px;color:#8190a3;font-size:10px}.problem-footer>span{font-size:8px;color:#b2bac6}.coding-panel{background:#fff}.editor-topbar{height:43px;display:flex;align-items:center;justify-content:space-between;background:#152131;color:#8493a6;flex-shrink:0;border-bottom:1px solid #2c3748}.file-tab{height:100%;padding:0 17px;display:flex;align-items:center;gap:8px;background:#1b283a;border-right:1px solid #29374a;border-top:2px solid #40bba7;color:#a9b9ce}.file-tab>svg{color:#87b5d1}.file-tab strong{font-family:Consolas,monospace;font-size:11px;font-weight:400}.file-dot{width:5px;height:5px;background:#78859a;border-radius:50%;margin-left:13px;opacity:.6}.editor-tools{display:flex;align-items:center;gap:4px;padding-right:12px}.editor-tools button{padding:5px;color:#7d8ca1;display:flex}.editor-tools button:hover{color:#c5d1e0;background:#29364a;border-radius:4px}.editor-tools>span{font-size:9px;min-width:13px;text-align:center}.editor-tools i{height:13px;width:1px;background:#324054;margin:0 5px}.code-editor{min-height:220px;flex:1.15;background:#1b283a;overflow:hidden}.cm-editor{height:100%;font-size:var(--code-font-size, 13px);background:#1b283a!important;color:#c7d5e6!important}.cm-editor .cm-scroller{font-family:SFMono-Regular,Consolas,monospace;font-size:inherit;line-height:1.8;scrollbar-width:thin;scrollbar-color:#415168 transparent}.cm-editor .cm-content{padding:18px 0 22px;caret-color:#76d3c1}.cm-editor .cm-gutters{padding:18px 5px 22px 8px;background:#1b283a!important;border:0!important;color:#536780!important}.cm-editor .cm-activeLineGutter{background:transparent!important;color:#b7c9df!important}.cm-editor .cm-activeLine{background:#344b6838!important}.cm-editor .cm-line{padding-left:8px}.cm-editor .cm-cursor{border-left-color:#71d0be!important}.cm-editor .cm-selectionBackground{background:#3c6699!important;box-shadow:inset 0 0 0 1px #94c7ff}.cm-editor.cm-focused .cm-selectionBackground{background:#356fac!important;box-shadow:inset 0 0 0 1px #acd5ff}.cm-editor:not(.cm-focused) .cm-content ::selection{background:#3c6699;color:#fff}.cm-editor.cm-focused{outline:none}.run-toolbar{height:54px;background:#172335;border-top:1px solid #2d394b;display:flex;align-items:center;gap:10px;padding:0 14px;flex-shrink:0}.runtime-status{display:flex;align-items:center;gap:6px;font-size:9px;color:#8190a5;min-width:0;flex:1}.runtime-status>span:nth-child(2){white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.runtime-status>button{color:#e0b68a;font-size:9px;text-decoration:underline;white-space:nowrap}.runtime-status.error{color:#e5a29c}.ready-dot,.loading-dot{height:5px;width:5px;background:#34b096;border-radius:50%;flex-shrink:0}.loading-dot{background:#c6a360;animation:pulse 1.4s ease-in-out infinite}@keyframes pulse{50%{opacity:.25}}.keyboard-hint{font-family:Consolas,monospace;font-size:9px;color:#61758f;white-space:nowrap;margin-right:4px}.run-button{display:flex;align-items:center;justify-content:center;gap:7px;font-size:10px;letter-spacing:.1px;padding:10px 14px;border-radius:5px;background:#1eb39f;color:#fff;font-weight:600;white-space:nowrap;box-shadow:0 2px 3px #0b152a33}.run-button:hover:not(:disabled){background:#23c0aa}.run-button:disabled{opacity:.5}.stop-button{display:flex;align-items:center;gap:6px;background:#aa514f;color:#fff;padding:10px 15px;border-radius:5px;font-size:10px}.results-panel{flex:1;display:flex;flex-direction:column;min-height:260px;overflow:hidden}.results-tabs{height:44px;display:flex;justify-content:space-between;align-items:center;padding:0 18px;border-bottom:1px solid #e8edf3;flex-shrink:0}.results-tabs>div{display:flex;height:100%;gap:23px}.results-tabs button{display:flex;align-items:center;gap:6px;font-size:10px;color:#9aa4b2;position:relative;padding:0 1px}.results-tabs button.active{color:#526a7d;font-weight:600}.results-tabs button.active:after{content:"";position:absolute;bottom:-1px;left:0;right:0;height:2px;background:#708d9f}.execution-badge{font-size:9px;display:flex;gap:4px;align-items:center}.execution-badge.success{color:#36a68f}.execution-badge.failed{color:#d07871}.error-dot{height:5px;width:5px;border-radius:50%;background:#dc8b80}.result-content{flex:1;overflow:auto;scrollbar-width:thin;scrollbar-color:#dce3eb transparent;background:#fcfdfe}.empty{height:100%;min-height:190px;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:25px 12px;text-align:center}.empty-icon{height:45px;width:45px;border-radius:12px;display:grid;place-items:center;background:#f0f4f8;border:1px solid #e9eef4;color:#a5b3c3;margin-bottom:15px;box-shadow:0 3px 8px #d9e2ed25}.empty>strong{font-size:11px;color:#8b9aab;font-weight:500}.empty p{font-size:9px;line-height:1.95;color:#aeb8c5;margin:8px 0 0}.empty kbd{font-size:8px;background:#f2f5f8;border:1px solid #e8edf2;border-radius:3px;padding:1px 3px;color:#8b9aab}.submission-bar{height:55px;display:flex;justify-content:space-between;align-items:center;padding:0 16px;border-top:1px solid #e7ecf2;background:#fff;gap:8px;flex-shrink:0}.submission-bar>span{font-size:8px;color:#a1adbb;display:flex;align-items:center;gap:5px}.grade-button{display:flex;align-items:center;gap:5px;background:#edf5f3;color:#238d7b;border:1px solid #d8e9e4;border-radius:5px;padding:8px 15px;font-size:10px;font-weight:600;white-space:nowrap}.grade-button:hover:not(:disabled){background:#dff1eb}.workspace-footer{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:17px 32px 0;font-size:9px;color:#a5aebb}.workspace-footer>span{display:flex;align-items:center;gap:6px}.workspace-footer>div{display:flex;align-items:center;gap:16px}.workspace-footer button{display:flex;align-items:center;gap:6px;font-size:10px;color:#7c899a;white-space:nowrap}.site-footer{display:flex;align-items:center;justify-content:space-between;padding:29px 32px 23px;font-size:9px;color:#b0b8c4}.site-footer>span:first-child{font-size:14px;letter-spacing:-.7px;font-weight:750;color:#98a4b4}.site-footer small{font-weight:400;font-size:9px;margin-left:10px;color:#b0b8c4;letter-spacing:-.1px}.site-footer>span:last-child{font-size:8px;letter-spacing:.3px}.toast{position:fixed;bottom:25px;left:calc(50% + 100px);transform:translate(-50%);z-index:100;background:#1f3448;color:#e1eee9;box-shadow:0 5px 25px #0f213633;border:1px solid #3d5c64;border-radius:8px;padding:15px 18px;display:flex;gap:10px;align-items:center;font-size:11px;max-width:calc(100vw - 28px);width:max-content}.toast>svg{color:#57c5ad}.toast>button{padding:0 0 0 15px;color:#8dacae}.page-loading,.fetch-error{min-height:500px;display:flex;align-items:center;justify-content:center;gap:12px;color:#8b9aab;font-size:12px;margin:0 32px}.fetch-error{flex-direction:column;color:#a56a6a;gap:15px}.fetch-error button{padding:10px 15px;border:1px solid #e0caca;border-radius:6px}.file-switcher{display:flex;flex-wrap:wrap;gap:7px;margin:17px 0}.file-switcher button{display:flex;gap:6px;align-items:center;padding:8px 9px;background:#f5f7fa;border:1px solid #e7edf3;border-radius:5px;font-size:9px;font-family:Consolas,monospace;color:#8b99aa}.file-switcher button.active{background:#edf7f3;border-color:#c3e4d8;color:#398b73}.dataset-info>strong{font-size:11px;color:#738195;font-weight:500;line-height:1.7}.dataset-info>div{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin:11px 0 15px}.dataset-info .badge{font-size:8px;padding:4px 6px}.download-link{margin-left:auto;color:#4b9d87;font-size:9px;display:flex;gap:4px;align-items:center}.table-scroll{overflow-x:auto;border:1px solid #e7edf3;border-radius:6px;scrollbar-width:thin;scrollbar-color:#d4dee8 transparent;max-width:100%;background:#fff}table{border-collapse:collapse;min-width:100%;text-align:left;font-family:Consolas,monospace;font-size:9px;color:#6e7c8d;white-space:nowrap}th{background:#f3f6fa;color:#5d7087;font-weight:550;padding:9px 10px;border-bottom:1px solid #e5ebf2}td{padding:9px 10px;border-bottom:1px solid #eef1f5}tr:last-child td{border:0}tr:nth-child(2n){background:#fbfcfe}.null-value{color:#c29861;font-style:italic}.column-title{margin-top:25px}.column-definitions{margin-top:11px}.column-definitions>div{padding:9px 0;border-bottom:1px solid #eff2f6;display:flex;gap:6px;align-items:center;flex-wrap:wrap}.column-definitions code{font-size:10px;color:#5d7c91;overflow-wrap:anywhere}.column-definitions .badge{font-size:8px;padding:3px 5px}.column-definitions p{font-size:10px;color:#95a0ae;margin:0;flex-basis:100%;line-height:1.6}.read-example{background:#f4f7fa;border:1px solid #e8edf3;border-radius:5px;padding:10px;margin-top:19px;font-size:9px}.read-example>span{display:block;color:#a2acb8;margin-bottom:8px}.read-example>code{color:#6a8a9a;overflow-wrap:anywhere}.note-help{font-size:11px;color:#99a4b2;line-height:1.8;margin-bottom:19px}.notes-editor{width:100%;min-height:330px;border:1px solid #e3eaf1;background:#fcfdfe;resize:vertical;line-height:2;font-size:11px;color:#677990;padding:14px;border-radius:6px}.notes-editor::placeholder{color:#b4bdc8}.note-saved{font-size:9px;color:#a4b0be;display:flex;align-items:center;gap:5px;margin-top:10px}.solution-warning{display:flex;gap:9px;background:#f6f9fb;border:1px solid #e6edf3;color:#8aa0b1;border-radius:6px;padding:12px}.solution-warning p{margin:0;font-size:10px;line-height:1.8}.solution-code-heading{display:flex;justify-content:space-between;align-items:center;margin-top:24px}.solution-code-heading strong{font-size:10px;color:#6a7b8f;font-weight:600}.solution-code-heading button{font-size:9px;color:#31917c;display:flex;align-items:center;gap:5px}.reference-code{margin-top:12px;background:#1b283a;border:1px solid #314259;border-radius:6px;overflow:hidden}.reference-code .cm-editor{height:auto}.reference-code .cm-scroller{max-height:560px}.reference-code .cm-activeLine{background:transparent!important}.submission-contract{background:#f6f9fb;border:1px solid #e5ecf3;border-radius:6px;padding:13px;margin-top:12px}.submission-contract>code{font-size:11px;color:#588d82}.submission-contract p{font-size:10px;color:#94a0af;line-height:1.9;margin-bottom:0}.submission-contract p code{color:#71869c}.console-output{padding:16px 18px;font-size:11px;line-height:1.8;color:#5e7189}.console-label{font-size:8px;letter-spacing:1px;color:#9daaba;margin:2px 0 9px;display:flex;align-items:center;gap:5px}.console-output pre{font-size:10px;line-height:1.9;overflow:auto;margin:0 0 17px;white-space:pre;-moz-tab-size:4;tab-size:4}.warning-label,.warning-output{color:#b99b65}.error-label{color:#cb7c77}.console-output .error-output{background:#fff3f1;border:1px solid #f2deda;border-radius:5px;padding:12px;color:#b26665;white-space:pre-wrap;overflow-wrap:anywhere}.collected-answers{background:#f0f8f5;border:1px solid #ddeee6;border-radius:6px;padding:11px;color:#6c978a}.collected-answers>span{font-size:9px;display:flex;align-items:center;gap:5px}.collected-answers pre{font-size:10px;margin:9px 0 0;color:#618c81;white-space:pre-wrap}.stale-notice{font-size:9px;color:#b29869;background:#fffbf1;padding:7px 9px;border-radius:4px;margin-bottom:13px}.submission-found{display:flex;gap:9px;align-items:center;background:#eff7f3;border:1px solid #deebe4;border-radius:6px;padding:12px;color:#6b9d88}.submission-found>span{flex:1}.submission-found strong{display:block;font-size:10px;font-weight:550}.submission-found small{display:block;font-size:9px;color:#89a396;margin-top:5px}.submission-found button{font-size:9px;display:flex;gap:3px;align-items:center}.result-plot{max-width:100%;border-radius:5px;border:1px solid #e8edf3;margin-top:14px}.no-output{font-size:11px;color:#9ba7b7;line-height:1.9}.answer-form{padding:18px}.answer-form-heading{margin-bottom:17px}.answer-form-heading strong{font-size:11px;color:#62768b;display:block}.answer-form-heading>span{font-size:9px;color:#9caaba;display:block;margin-top:6px}.numeric-answers{display:flex;flex-direction:column;gap:15px}.numeric-answers label{display:flex;align-items:flex-start;gap:12px}.numeric-answers label>span{display:flex;gap:7px;align-items:flex-start;flex:1;font-size:10px;line-height:1.8;color:#6f8197;margin-top:6px}.numeric-answers b{background:#eef2f7;color:#90a0b2;font-size:9px;width:17px;height:17px;display:grid;place-items:center;border-radius:4px;flex-shrink:0}.numeric-answers label>div{width:42%;max-width:210px}.numeric-answers input{border:1px solid #dce5ee;border-radius:5px;color:#4e6d81;padding:9px 10px;width:100%;min-width:0;font-family:Consolas,monospace;font-size:11px;background:#fff}.numeric-answers input::placeholder{color:#b3becc;font-family:inherit;font-size:9px}.numeric-answers small{display:block;font-size:8px;color:#9fabb9;margin-top:5px;text-align:right}.grade-result{border-radius:7px;padding:14px;margin-top:20px;font-size:10px}.grade-result.passed{background:#edf8f1;border:1px solid #d3e9dc;color:#529574}.grade-result.retry{background:#fffcf2;border:1px solid #eee6cf;color:#a69466}.grade-result.invalid{display:flex;gap:10px;align-items:center;background:#fff5f2;border:1px solid #efdcd6;color:#ba8070}.grade-result.invalid p{margin:0;line-height:1.8}.grade-result-title{display:flex;align-items:center;gap:6px}.grade-result-title strong{font-size:11px;font-weight:600}.grade-result-title>span{margin-left:auto;font-family:Consolas,monospace;font-size:17px}.grade-result>p{font-size:9px;line-height:1.8;margin:8px 0 0}.grade-detail{display:flex;align-items:center;gap:7px;border-top:1px solid #dbe8dc88;padding:9px 0;font-size:9px}.grade-detail:first-of-type{margin-top:11px}.grade-detail:last-child{padding-bottom:0}.grade-detail>span{flex:1}.grade-detail>strong{font-family:Consolas,monospace;font-weight:500;font-size:10px}.metric-value{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:9px}.metric-value strong{font-family:Consolas,monospace;font-size:19px}.metric-value>span{margin-left:auto;font-size:9px}.file-ready{display:flex;align-items:center;gap:10px;padding:14px;background:#f1f7f4;border:1px solid #deebe3;border-radius:6px;color:#6c9a85;margin-bottom:12px}.file-ready>div{flex:1;min-width:0}.file-ready strong{display:block;font-family:Consolas,monospace;font-size:11px;font-weight:500}.file-ready span{display:block;font-size:9px;margin-top:5px;overflow-wrap:anywhere}.file-ready>svg:last-child{color:#6bac89}.submission-missing{display:flex;align-items:center;gap:11px;padding:16px;border:1px dashed #dbe3ec;background:#f7f9fb;color:#9aabba;border-radius:6px}.submission-missing p{font-size:10px;margin:0;line-height:1.8}.grading-note{font-size:9px;color:#a7b1be;line-height:1.8;margin:12px 0 0}@media(min-width:1700px){.workspace{grid-template-columns:minmax(420px,1fr) minmax(550px,1.3fr);gap:24px}.problem-heading{padding:27px 30px}.problem-body{padding:25px 30px}.panel-tabs{padding-left:30px}.scenario,.step-list p{font-size:13px}.section-label{font-size:12px}.problem-heading h2{font-size:23px}.workspace{min-height:730px}.type-button strong{font-size:13px}.question-link{font-size:11px;padding-top:14px;padding-bottom:14px}}@media(max-width:1250px){.sidebar{width:218px;padding-left:11px;padding-right:11px}.main-shell{margin-left:218px}.brand{font-size:27px}.type-button{padding-left:10px;padding-right:10px}.question-link{font-size:10px;gap:8px;padding-left:10px;padding-right:8px}.topbar,.page-intro{padding-left:23px;padding-right:23px}.practice-strip{margin-left:23px;margin-right:23px}.workspace{margin-left:23px;margin-right:23px;gap:13px;grid-template-columns:minmax(310px,.93fr) minmax(360px,1.1fr)}.problem-heading{padding:20px 17px}.problem-heading h2{font-size:17px}.problem-body{padding:21px 17px}.panel-tabs{padding-left:17px;gap:18px}.keyboard-hint{display:none}.run-toolbar{padding:0 12px}.workspace-footer{margin-left:23px;margin-right:23px}.site-footer{padding-left:23px;padding-right:23px}.mini-progress i{width:9px}.focus-timer{min-width:176px;gap:8px}.page-intro h1{font-size:24px}}@media(max-width:1080px){.workspace{grid-template-columns:1fr;min-height:0;height:auto;max-height:none}.problem-panel{max-height:680px;min-height:610px}.coding-panel{height:740px}.page-intro{align-items:center}.page-intro h1{font-size:23px}.focus-timer{min-width:156px;padding:11px 10px}.focus-timer>svg{display:none}.mini-progress{display:none}.workspace-footer>span{max-width:60%;font-size:8px;line-height:1.7}.site-footer>span:last-child{display:none}.toast{left:calc(50% + 100px)}.scenario,.step-list p{font-size:12px}.problem-heading h2{font-size:20px}.problem-heading{padding:23px}.problem-body{padding:24px}.panel-tabs,.problem-footer{padding-left:24px}.keyboard-hint{display:inline}.results-panel{min-height:300px}}@media(max-width:720px){.sidebar{transform:translate(-100%);transition:transform .2s;width:246px;padding-left:17px;padding-right:17px}.sidebar.open{transform:translate(0)}.nav-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#15213766;z-index:25;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.main-shell{margin-left:0}.topbar{height:57px;padding:0 18px}.mobile-menu{display:block;padding:0;margin-right:0;color:#76899e}.breadcrumb{gap:9px;font-size:10px}.topbar-right{gap:12px}.topbar-right>a{padding-left:12px}.autosave{font-size:9px}.page-intro{padding:24px 18px 20px;align-items:center;gap:12px}.eyebrow{font-size:7px;letter-spacing:1.2px}.page-intro h1{font-size:21px;letter-spacing:-.9px}.page-intro p{font-size:9px;line-height:1.8;max-width:230px;word-break:keep-all;margin-top:6px}.focus-timer{min-width:112px;max-width:116px;padding:9px 8px;gap:4px}.focus-timer span{font-size:16px;letter-spacing:.5px}.focus-timer small{font-size:7px}.focus-timer button{padding:3px}.focus-timer button:last-child{display:none}.practice-strip{margin:0 16px 14px;padding:12px;gap:10px}.practice-strip strong{font-size:11px}.practice-strip strong span{font-size:10px;margin-left:6px;padding-left:6px}.practice-strip p,.strip-total{font-size:9px}.strip-icon{width:32px;height:32px}.workspace{margin:0 16px;gap:16px}.problem-panel{min-height:630px;max-height:740px}.problem-heading{padding:21px 19px 18px}.problem-heading h2{font-size:19px}.problem-body{padding:22px 19px}.panel-tabs{padding-left:19px;gap:22px}.scenario,.step-list p{font-size:11.5px}.coding-panel{height:700px}.code-editor{min-height:240px}.cm-editor .cm-gutters{padding-left:3px}.editor-topbar{height:42px}.editor-tools{gap:2px;padding-right:8px}.file-tab{padding-left:12px;padding-right:12px}.editor-tools>span{font-size:9px}.editor-tools button{padding:4px}.run-toolbar{gap:7px}.runtime-status{font-size:8px}.keyboard-hint{display:none}.run-button{padding:9px 12px;font-size:10px}.results-tabs{padding-left:14px;padding-right:14px}.results-tabs>div{gap:20px}.submission-bar{padding:0 12px}.submission-bar>span{font-size:8px}.workspace-footer{margin:16px 18px 0;align-items:flex-start;gap:15px;flex-direction:column}.workspace-footer>span{max-width:none}.workspace-footer>div{align-self:flex-end}.site-footer{padding:24px 18px}.toast{left:50%;font-size:10px;bottom:15px;width:max-content;line-height:1.7;padding:12px}.toast>span{max-width:calc(100vw - 115px)}.numeric-answers label{gap:8px}.numeric-answers label>span{font-size:9px}.numeric-answers label>div{width:43%}.answer-form{padding:16px 14px}.grade-result-title strong{font-size:10px}.grade-detail{font-size:8px}.grade-detail>strong{font-size:9px}.problem-footer>span{font-size:8px}.file-ready span{font-size:8px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(min-width:721px){.scenario{font-size:13px}.step-list p{font-size:12.5px}.section-label{font-size:12px}.problem-heading h2{font-size:20px}.problem-meta{font-size:10px}.question-link{font-size:11.5px}.panel-tabs button{font-size:11px}.type-button strong{font-size:13px}.type-button small{font-size:10.5px}.answer-contract>div>span{font-size:11px}.problem-footer button{font-size:11px}.hint-area>button{font-size:11px}.hint-area p,.dataset-callout strong{font-size:11px}.numeric-answers label>span{font-size:11px}.console-output pre{font-size:11px}.grade-result-title strong,.note-help,.notes-editor{font-size:12px}}.mobile-nav-close{display:none}@media(max-width:720px){.mobile-nav-close{display:flex;position:absolute;top:17px;right:12px;padding:6px;color:#90a1b8;border-radius:5px}.mobile-nav-close:hover{background:#24354d}}
