*{box-sizing:border-box}html{color-scheme:light}body{margin:0;background:#fff;color:#242424;font-family:Pretendard,system-ui,sans-serif;word-break:keep-all}a{color:inherit;text-decoration:none}header{height:56px;max-width:520px;margin:auto;padding:0 22px;display:flex;justify-content:space-between;align-items:center;font-size:14px;border-bottom:1px solid #e9e9e9}header a{font-size:14px}header span{font-weight:600}main{max-width:520px;margin:auto;padding:24px 22px 40px}h1{font-size:32px;line-height:1.2;letter-spacing:-.025em;margin:14px 0 22px;font-weight:750}p{line-height:1.6}.eyebrow,.progress{font-size:14px;font-weight:600;color:#777}.progress{display:flex;justify-content:space-between;gap:12px}.cover{text-align:center;padding-top:0}.cover .eyebrow{color:#242424;margin:0 0 10px}.cover h1{font-size:39px;margin:0 0 16px}.cover-scene{margin:0 -12px}.cover-art{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:contain}.intro{font-size:17px;line-height:1.6;white-space:pre-line}.cover .intro{margin:18px 0 24px}.primary,.secondary{display:flex;justify-content:center;align-items:center;gap:14px;width:100%;min-height:58px;padding:15px 20px;border:1.5px solid #242424;border-radius:30px;background:#c2ec49;color:#242424;font:750 17px/1.5 Pretendard,sans-serif;cursor:pointer;touch-action:manipulation}.primary>span:last-child,.secondary>span:last-child{display:none}.secondary{background:#fff;border-color:#d2d2d2;margin-top:12px}.primary:active,.secondary:active{transform:translateY(2px)}.primary:disabled{background:#eef2e4;color:#777;border-color:#d9decf;cursor:default}.hint{font-size:13px;color:#777;line-height:1.6;margin:16px 0 0}.question h1{font-size:29px;line-height:1.35;margin:28px 0 22px}.workbench{margin:22px 0 20px;background:#f8faef;border-radius:24px;overflow:hidden;padding:12px 0}.board{display:block;width:100%;height:auto;aspect-ratio:10/7;cursor:crosshair;touch-action:pan-y}.board:focus-visible{outline:3px solid #3156ee;outline-offset:-4px}.guide{stroke:#aaa;stroke-width:3;fill:none}.geometry{stroke:#242424;stroke-width:5;fill:#fff}.reference{stroke:#242424;stroke-width:12;fill:none}.candidate{stroke:#3156ee;stroke-width:5;fill:#fff}.actual{stroke:#242424;stroke-width:6}.delta{stroke:#999;stroke-dasharray:8 8;stroke-width:3}.tool-shelf{margin:20px 0 0}.selection{font-size:16px;line-height:1.6;text-align:center;margin:0 0 23px}.selection small{display:block;color:#777;font-size:13px;margin-top:5px}.question .hint{text-align:center}.legend{display:flex;justify-content:center;flex-wrap:wrap;gap:18px;font-size:13px;color:#666;margin:18px 0 24px}.legend b{font-size:20px;color:#3156ee;margin-right:5px}.legend span+span b{color:#242424}.between .board{margin:20px 0}.between h1{font-size:30px}.measure{display:flex;justify-content:space-between;align-items:baseline;gap:12px;border-top:1px solid #e6e6e6;padding:18px 0;font-size:14px}.measure strong{font-size:30px}.between .hint{margin-bottom:22px}.result-heading{text-align:center}.result-heading .eyebrow{margin:0 0 12px}.result-heading h1{font-size:31px;margin:0 0 20px}.result-scene{display:block;width:100%;height:140px;object-fit:contain}.observation-total{display:flex;align-items:center;justify-content:center;gap:18px;margin:20px 0 28px}.score{display:flex;align-items:baseline;gap:4px;flex-shrink:0}.score strong{font-size:55px;font-weight:800;line-height:1}.score>span{font-size:21px;font-weight:650}.result-summary{font-size:14px;line-height:1.55;max-width:245px}.result-summary strong{display:block;font-weight:600}.result-summary span{display:block;margin-top:3px;color:#666}.record{padding:16px 0 18px;border-bottom:1px solid #e6e6e6}.record-heading{display:flex;align-items:baseline;justify-content:space-between;gap:14px}.record h2{font-size:16px;font-weight:650;line-height:1.5;margin:0}.verdict{white-space:nowrap;font-size:13px;color:#666}.record .board{cursor:default;margin:5px 0;max-height:220px;object-fit:contain}.record p{font-size:13px;color:#777;margin:4px 0 0}.scoring{font-size:13px;line-height:1.65;color:#777;margin:22px 0}.result-actions{margin:24px 0}.status{font-size:14px;color:#666;min-height:22px;text-align:center;margin:10px 0}.footer-link{display:block;text-align:center;font-size:14px;color:#666;margin:22px 0}.image-art{display:block;width:100%;max-height:230px;object-fit:contain;margin:16px 0}button:focus-visible,a:focus-visible{outline:3px solid #3156ee;outline-offset:4px}@media(max-width:374px){main{padding:24px 18px 36px}header{padding:0 18px}.cover h1{font-size:36px}.question h1{font-size:27px}.result-heading h1{font-size:29px}.observation-total{gap:14px}.result-summary{font-size:14px}.score strong{font-size:51px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}