:root{color-scheme:light;--ink:var(--ltct-ink,#14213d);--green:var(--ltct-primary,#2447e8);--line:var(--ltct-border,#dbe3f2);--muted:var(--ltct-text-muted,#4c5a73);--orange:#b04f25;font-family:system-ui,-apple-system,"Noto Sans KR",sans-serif;color:var(--ink);background:var(--ltct-surface,#f5f7ff);font-synthesis:none}
.challenge-panel{border:1px solid var(--ltct-border,#dbe3f2);border-radius:12px;padding:12px;margin:12px 0;background:var(--ltct-surface-alt,#f0f4ff)}.challenge-panel h2{font-size:17px;margin:0}.challenge-panel p{font-size:16px;line-height:1.65;margin:6px 0 10px;overflow-wrap:anywhere}.challenge-panel .repair-choice>b{flex:1;min-width:0}.candidate-status{font-size:14px;flex-shrink:0;color:var(--ltct-text-muted,#4c5a73)}.candidate-status:empty{display:none}.repair-choice.eliminated{background:var(--ltct-surface-alt,#f0f4ff);color:var(--ltct-text-muted,#4c5a73);opacity:.7}.repair-choice.eliminated>b{text-decoration:line-through}.evidence-panel{border-top:1px solid var(--line);margin-top:12px;padding-top:8px}.evidence-panel button{width:100%;font-size:15px}.evidence-panel p{color:var(--ltct-text-muted,#4c5a73)}.experiment-history{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:6px}.experiment-history li{font-size:14px;line-height:1.6;border-top:1px solid var(--line);padding-top:6px;overflow-wrap:anywhere}#experiment{width:100%;margin-top:12px}.conflict-proof{display:grid;gap:7px;margin:10px 0}.rule.selected-rule{border-left:3px solid var(--ltct-primary,#2447e8);padding-left:7px}.rule.omitted{background:#fff3d9;border:1px dashed #b59852;border-radius:5px;padding:5px}.rule.omitted .truth-status{color:#795912;background:#fff3d9}#change-count{font-weight:700;color:var(--ltct-ink,#14213d)}.claim-heading{flex-wrap:wrap}.challenge-panel+.actions{margin-top:10px}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0}button,select{font:inherit;color:inherit;min-height:44px;border:1px solid var(--ltct-border,#dbe3f2);border-radius:10px;background:#fff}button{cursor:pointer;padding:8px 12px;touch-action:manipulation}button:hover:not(:disabled){border-color:var(--green);background:var(--ltct-surface-alt,#f0f4ff)}button:disabled{opacity:.48;cursor:default}button:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--ltct-primary,#2447e8);outline-offset:3px}.primary{background:var(--green);color:#fff;border-color:var(--green);font-weight:700}.primary:hover:not(:disabled){background:var(--ltct-primary-hover,#1d39bf);color:#fff}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.header{max-width:850px;margin:auto;display:flex;justify-content:space-between;align-items:center;padding:12px 20px;gap:12px}.brand{display:flex;align-items:center;gap:7px;text-decoration:none;color:var(--green);font-weight:700}.brand img{object-fit:contain}.brand small{font-size:13px;font-weight:400;margin-left:6px}.practice-tag{font-size:13px;color:var(--muted)}main{max-width:730px;margin:0 auto 36px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px 24px 24px}.title-row,.stage-meta,.coach-heading,.claim-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.title-row{margin-bottom:14px}h1{font-size:28px;letter-spacing:-.04em;margin:0}.progress{color:var(--green);font-size:14px;white-space:nowrap}.stage-nav{display:flex;gap:8px}.stage-nav button{width:44px;padding:0;flex-shrink:0}.stage-nav select{flex:1;min-width:0;font-size:16px;font-weight:650;padding:8px 10px}.stage-meta{margin:8px 0 12px;font-size:14px;color:var(--muted);align-items:flex-start}.timer{white-space:nowrap;font-size:13px}.timer b{font-size:16px;font-variant-numeric:tabular-nums;margin-left:4px;color:var(--ink)}
.task{border:1px solid var(--line);border-radius:12px;overflow:hidden}.task h2{font-size:14px;font-weight:700;margin:0 0 7px}.task h2>span{margin-right:4px}.conditions{background:var(--ltct-surface-alt,#f0f4ff);padding:12px 14px}.conditions h2{color:var(--ltct-ink,#14213d)}.conditions ol{list-style:none;padding:0;margin:0;display:grid;gap:7px}.rule{font-size:16px;line-height:1.5;display:flex;justify-content:space-between;gap:8px;align-items:flex-start}.rule-text{flex:1;min-width:0}.rule-number{font-size:13px;margin-right:5px;color:var(--ltct-text-muted,#4c5a73)}.truth-status{font-size:13px;white-space:nowrap;font-weight:650;padding:1px 6px;border-radius:5px;background:#fff;align-self:center}.truth-status.good{color:var(--ltct-ink,#14213d);background:var(--ltct-surface-strong,#e9efff)}.truth-status.bad{color:#a23d21;background:#ffdfd1}.claim{padding:12px 14px;background:#fff6ef;border-top:1px solid #eee0d5}.claim h2{color:#914923;margin-bottom:0}.claim p{font-size:16px;line-height:1.5;margin:7px 0 0;word-break:keep-all;overflow-wrap:anywhere}.claim-heading{align-items:flex-start}.claim-heading .truth-status{flex-shrink:0}
.coach{margin:12px 0 10px;padding:10px 12px;background:var(--ltct-surface-alt,#f0f4ff);border:1px solid var(--ltct-border,#dbe3f2);border-radius:10px;min-height:98px}.coach-heading{font-size:14px;color:var(--ltct-ink,#14213d)}.coach-heading>span{font-variant-numeric:tabular-nums;font-size:13px;white-space:nowrap}.coach p{font-size:16px;line-height:1.55;margin:6px 0 0;word-break:keep-all;overflow-wrap:anywhere}.coach.playing{background:var(--ltct-surface-alt,#f0f4ff);border-color:var(--line)}
.board{display:grid;gap:10px;overflow:visible}.zone{border:1.5px solid var(--ltct-border-strong,#bdcbed);border-radius:12px;position:relative;padding:8px 10px 10px;min-height:158px;overflow:visible}.zone.inside{background:var(--ltct-surface-alt,#f0f4ff)}.zone.outside{background:var(--ltct-surface-alt,#f0f4ff);border-color:var(--ltct-border,#dbe3f2)}.zone>h2{margin:0 0 7px;font-size:15px;font-weight:700;display:flex;gap:7px;align-items:center}.zone>h2>span{font-size:13px;font-weight:400;color:var(--muted)}.slots{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;min-height:106px;align-items:start}.zone-empty{position:absolute;left:10px;right:10px;top:84px;text-align:center;color:var(--ltct-text-muted,#4c5a73);font-size:14px;pointer-events:none}.owl{width:100%;min-width:0;height:auto;min-height:106px;padding:5px 3px 4px;border-radius:9px;border:1px solid var(--ltct-border,#dbe3f2);background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;position:relative;will-change:transform;touch-action:manipulation;color:var(--ink)}.owl img{width:50px;height:50px;object-fit:contain;pointer-events:none}.owl .name{font-size:15px;font-weight:700;line-height:1.2}.badges{display:flex;justify-content:center;gap:3px;min-height:18px;flex-wrap:wrap;line-height:1.3}.badge{font-size:14px;white-space:nowrap;line-height:1.3;font-weight:650}.badge.blue{color:var(--ltct-text-muted,#4c5a73)}.badge.star{color:#866218}.badge.moon{color:#785089}.badge.none{font-size:13px;font-weight:400;color:var(--ltct-text-muted,#4c5a73)}.owl .destination{font-size:12px;color:var(--ltct-text-muted,#4c5a73);line-height:1.2}.owl:disabled{opacity:1;cursor:default}.owl.witness{border:2px solid #c96939;background:#fff0e4;box-shadow:0 0 0 2px #ffe1ce}.owl.moving{z-index:5}.touch-help{margin:8px 0;font-size:14px;line-height:1.5;color:var(--muted)}
.actions{display:flex;gap:7px;flex-wrap:wrap}.actions>.primary{flex:1;min-width:170px}.actions>button{font-size:15px}.check-meta{font-size:13px;color:var(--muted);margin:8px 0 0;line-height:1.5}.feedback{margin-top:12px;padding:14px;border:1px solid #e4ba9c;background:#fff4e9;border-radius:12px;scroll-margin-block:12px}.feedback.success{background:#edf7e7;border-color:#b2d39e}.feedback h2{margin:0;font-size:18px}.feedback p{margin:7px 0 10px;font-size:16px;line-height:1.6;word-break:keep-all}.feedback button{width:100%}.complete{margin-top:14px;padding:16px;background:#edf5f7;border-radius:12px}.complete h2{font-size:20px;margin:0}.complete p{font-size:16px;line-height:1.6}.help{margin-top:18px;border-top:1px solid var(--line);padding-top:14px;color:var(--muted)}.help summary{font-size:15px;cursor:pointer}.help p{font-size:14px;line-height:1.75;margin:10px 0 0}
@media(max-width:760px){.header{padding:10px 12px}.brand small{display:none}.practice-tag{font-size:12px}main{margin:0 8px 24px;padding:14px 12px 18px;border-radius:14px}.title-row{margin-bottom:10px}h1{font-size:24px}.stage-meta{gap:6px;flex-wrap:wrap;margin-bottom:10px}.stage-nav select{font-size:15px}.conditions,.claim{padding:10px}.coach{margin-top:10px;min-height:105px}.zone{padding:7px 7px 9px;min-height:151px}.slots{gap:4px}.owl img{width:44px;height:44px}.owl{min-height:103px}.zone-empty{font-size:13px}.actions>#example,.actions>#reset{padding:8px 9px}.rule{flex-wrap:wrap;gap:3px}.rule-text{flex-basis:calc(100% - 70px)}.claim-heading{flex-wrap:wrap}}
@media(max-width:350px){main{padding-left:8px;padding-right:8px}.slots{gap:3px}.owl .name{font-size:14px}.badge{font-size:13px}.actions{gap:5px}.actions>.primary{min-width:145px}.timer{margin-left:auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important}}
.journey{display:flex;gap:6px;margin:0 0 10px;flex-wrap:wrap}.journey>span{flex:1;text-align:center;padding:8px 6px;border-radius:8px;background:var(--ltct-surface-alt,#f0f4ff);color:var(--ltct-text-muted,#4c5a73);font-size:14px;min-width:125px;border:1px solid var(--ltct-border,#dbe3f2)}.journey>span.current{background:var(--ltct-surface-alt,#f0f4ff);border-color:var(--ltct-border-strong,#bdcbed);color:var(--ltct-ink,#14213d);font-weight:700}.journey>span.done{background:var(--ltct-surface-strong,#e9efff);border-color:var(--ltct-border-strong,#bdcbed);color:var(--ltct-ink,#14213d)}.repair-choice>b{font-weight:500}.repair-panel+.actions{margin-top:10px}
.task.repairing .claim{background:var(--ltct-surface-alt,#f0f4ff);border-color:var(--ltct-border,#dbe3f2)}.task.repairing .claim h2{color:var(--ltct-ink,#14213d)}.repair-panel{border:1px solid var(--ltct-border,#dbe3f2);background:var(--ltct-surface,#f5f7ff);border-radius:12px;padding:12px;margin-top:12px;scroll-margin-top:12px}.repair-panel h2{font-size:17px;margin:0}.repair-panel>p{font-size:16px;line-height:1.6;margin:5px 0 10px}.repair-panel>.repair-scope{font-size:14px;color:var(--ltct-text-muted,#4c5a73);margin:9px 0 0}.repair-choices{display:grid;gap:7px}.repair-choice{text-align:left;display:flex;align-items:center;gap:9px;padding:10px 12px;font-size:16px;line-height:1.55;word-break:keep-all;overflow-wrap:anywhere;min-height:52px}.repair-choice>span{flex-shrink:0;border-radius:50%;width:24px;height:24px;background:var(--ltct-surface-alt,#f0f4ff);color:var(--ltct-text-muted,#4c5a73);text-align:center;font-size:14px}.repair-choice[aria-pressed=true]{border:2px solid var(--ltct-primary,#2447e8);background:var(--ltct-surface-alt,#f0f4ff);padding:9px 11px}.repair-choice[aria-pressed=true]>span{color:#fff;background:var(--ltct-primary,#2447e8)}.repair-choice:disabled{opacity:1;cursor:default}.repair-report{font-size:14px;line-height:1.6;margin:6px 0;color:var(--ltct-ink,#14213d)}.board-label{font-size:14px;font-weight:650;margin:8px 0;color:var(--ltct-text-muted,#4c5a73)}.rule.additional{border-top:1px dashed var(--ltct-border-strong,#bdcbed);padding-top:8px;margin-top:3px}.feedback button+button{margin-top:8px}