:root{--bg: #f8fafc;--card: #ffffff;--ink: #0f172a;--ink-soft: #334155;--muted: #e9eef5;--muted-ink: #475569;--line: #cbd5e1;--primary: #1e3a5f;--measure: #2563eb;--accent: #a16207;--accent-soft: #fef3c7;--seal: #b91c1c;--ok: #166534;--focus: #2563eb;--radius: 14px;--font: "Pretendard", "Noto Sans KR", -apple-system, "Apple SD Gothic Neo", "Segoe UI", sans-serif}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.65;caret-color:var(--measure)}::selection{background:var(--primary);color:#fff}:focus{outline:none}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}.num,td,.dial-input,.dial-readout,.map-stats,.detector-table td{font-variant-numeric:tabular-nums}.shell{max-width:1280px;margin:0 auto;padding:0 20px 64px}.topbar{display:flex;align-items:center;gap:12px;padding:18px 0 6px;flex-wrap:wrap}.brand{display:grid;gap:2px}.kicker{margin:0;font-size:.82rem;font-weight:600;letter-spacing:.04em;color:var(--accent)}.topbar h1{font-size:1.35rem;letter-spacing:-.02em;margin:0;color:var(--primary)}.seed-badge{font-size:.8rem;color:var(--muted-ink);border:1px solid var(--line);background:var(--card);border-radius:999px;padding:3px 12px;white-space:nowrap}.topbar .spacer{flex:1}.rail{display:flex;gap:0;margin:14px 0 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);overflow:hidden}.rail-step{flex:1;padding:10px 8px;text-align:center;font-size:.85rem;color:var(--muted-ink);border-left:1px solid var(--line);background:transparent;cursor:pointer;font-family:inherit}.rail-step:first-child{border-left:none}.rail-step .rail-n{display:inline-block;width:1.5em;height:1.5em;line-height:1.5em;border-radius:50%;border:1px solid var(--line);margin-right:6px;font-size:.8rem}.rail-step[aria-current=step]{background:var(--primary);color:#fff;font-weight:600}.rail-step[aria-current=step] .rail-n{border-color:#fff}.rail-step.done{color:var(--primary)}.rail-step.done .rail-n{background:var(--primary);border-color:var(--primary);color:#fff}.rail-step:disabled{cursor:default;opacity:.75}.stage{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:20px;align-items:start}.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.panel h2{margin:0 0 6px;font-size:1.25rem;letter-spacing:-.02em;color:var(--primary)}.panel h3{margin:20px 0 8px;font-size:1rem;color:var(--ink)}.panel p{margin:8px 0;max-width:68ch}.hint{color:var(--muted-ink);font-size:.92rem}.error-text{color:var(--seal);font-weight:600}.question{font-size:1.3rem;font-weight:700;letter-spacing:-.02em;line-height:1.5;margin:4px 0 12px;text-wrap:balance}.sealed-figure{display:flex;justify-content:center;padding:8px 0}.sealed-figure svg,.sealed-figure img{width:min(100%,300px);height:auto}.intro-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:12px 0}.intro-card{margin:0;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:8px;text-align:center}.intro-card img{width:100%;height:auto}.intro-card figcaption{font-size:.8rem;color:var(--muted-ink);margin-top:4px}@media(max-width:900px){.intro-cards{grid-template-columns:1fr}.intro-card img{max-width:220px}}.stamp{display:inline-block;border:3px double var(--seal);color:var(--seal);font-weight:800;letter-spacing:.35em;padding:4px 14px 4px 18px;transform:rotate(-6deg);border-radius:6px;background:#b91c1c0d}.choice-row{display:flex;gap:12px;flex-wrap:wrap;margin:12px 0}.choice{flex:1 1 200px;border:2px solid var(--line);border-radius:12px;background:var(--card);padding:10px;cursor:pointer;font-family:inherit;text-align:center}.choice[aria-pressed=true]{border-color:var(--measure);background:#eff6ff}.choice table{margin:6px auto;border-collapse:collapse}.choice td{width:18px;height:18px;border:1px solid var(--line);font-size:0;padding:0}.choice td.on{background:var(--primary)}.field label{display:block;font-weight:600;margin:14px 0 6px}.field input[type=text],.field textarea,.field select,.dial-input{font-family:inherit;font-size:1rem;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 12px;width:100%;max-width:26rem}.field textarea{min-height:5.5em;resize:vertical}.btn{font-family:inherit;font-size:1rem;font-weight:700;border-radius:12px;padding:12px 22px;cursor:pointer;border:2px solid var(--primary);background:var(--primary);color:#fff;min-height:48px}.btn:hover{filter:brightness(1.08)}.btn:disabled{opacity:.45;cursor:not-allowed;filter:none}.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--line);font-weight:600;padding:8px 14px;min-height:44px;font-size:.95rem}.btn-danger{background:#fff;color:var(--seal);border:2px solid var(--seal)}.btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}@keyframes gi-pulse{0%{box-shadow:0 0 #a162078c}70%{box-shadow:0 0 0 14px #a1620700}to{box-shadow:0 0 #a1620700}}.pulse{animation:gi-pulse 1.8s ease-out infinite;border-color:var(--accent)}@media(prefers-reduced-motion:reduce){.pulse{animation:none;border:3px solid var(--accent)}*,*:before,*:after{transition:none!important}}.dial-wrap{display:flex;flex-direction:column;align-items:center;gap:8px}.dial{width:min(100%,260px);height:auto;touch-action:none;cursor:grab}.dial-face{fill:#fff;stroke:var(--accent);stroke-width:3}.dial-tick{stroke:var(--muted-ink);stroke-width:1.5}.dial-tick-major{stroke:var(--primary);stroke-width:2.5}.dial-num{font-size:11px;fill:var(--muted-ink);font-variant-numeric:tabular-nums}.dial-needle{stroke:var(--seal);stroke-width:4;stroke-linecap:round}.dial-hub{fill:var(--primary);stroke:#fff;stroke-width:2}.dial-readout{font-size:22px;font-weight:800;fill:var(--ink);font-variant-numeric:tabular-nums}.dial-row{display:flex;gap:8px;align-items:center}.dial-input{width:7em;text-align:center}.is-disabled .dial{cursor:not-allowed;opacity:.6}.presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.budget-monument{text-align:center;padding:10px;border:1px dashed var(--accent);border-radius:12px;background:var(--accent-soft);margin:12px 0}.budget-monument .big{font-size:3rem;font-weight:800;color:var(--primary);line-height:1.1;font-variant-numeric:tabular-nums}.angle-chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:10px 0}.angle-chips li{border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.9rem;background:var(--bg);font-variant-numeric:tabular-nums}.angle-chips li.avg{border-style:dashed;border-color:var(--accent)}.map{margin:12px 0;padding:0}.map-title{font-weight:700;color:var(--primary);margin-bottom:6px}.map-canvas{width:min(100%,340px);height:auto;image-rendering:pixelated;border:1px solid var(--line);border-radius:10px;background:#fff}.map-legend{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted-ink);margin-top:6px}.map-legend-bar{flex:1;height:10px;border-radius:5px;border:1px solid var(--line);max-width:220px}.map-legend-bar-density{background:linear-gradient(to right,#fff,#dbeafe,#1e3a5f)}.map-legend-bar-difference{background:linear-gradient(to right,#fff,#b91c1c)}.map-stats,.map-note{font-size:.88rem;color:var(--muted-ink)}.map-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.map-table-wrap,.detector-table-wrap{overflow:auto;max-height:320px;border:1px solid var(--line);border-radius:10px;margin-top:8px}table{border-collapse:collapse;width:100%;font-size:.85rem}caption{text-align:left;font-weight:700;padding:8px;color:var(--primary)}th,td{border:1px solid var(--line);padding:4px 8px;text-align:right}thead th{background:var(--muted);position:sticky;top:0}.map-table td{font-size:.7rem;padding:2px 4px;color:var(--ink);text-align:center}details>summary{cursor:pointer;padding:10px 0;font-weight:600;color:var(--primary);min-height:44px}.detector-svg{width:100%;max-width:420px;height:auto;border:1px solid var(--line);border-radius:10px;background:#fff}.det-square{fill:var(--muted);stroke:var(--primary);stroke-width:2}.det-ray{stroke:var(--measure);stroke-width:1;opacity:.55}.det-tick{stroke:var(--accent);stroke-width:2.5}.det-cap{font-size:13px;fill:var(--muted-ink)}.progress{height:14px;border:1px solid var(--line);border-radius:999px;background:var(--muted);overflow:hidden;margin:10px 0}.progress>div{height:100%;background:var(--measure);width:0%}.status-line{font-size:.92rem;color:var(--muted-ink)}.status-line strong{color:var(--ink)}.residual-box{border:1px solid var(--measure);border-radius:10px;padding:10px 14px;margin:12px 0;background:#eff6ff}.plan-list{list-style:none;padding:0;margin:8px 0;display:grid;gap:8px}.plan-list li{border:1px solid var(--line);border-radius:10px;padding:8px 12px;background:var(--bg)}dialog.history{border:1px solid var(--line);border-radius:var(--radius);padding:22px;max-width:min(92vw,32rem)}dialog.history::backdrop{background:#0f172a73}::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-thumb{background:var(--line);border-radius:6px;border:3px solid var(--bg)}::-webkit-scrollbar-track{background:transparent}@media(max-width:900px){.stage{grid-template-columns:1fr}.rail{overflow-x:auto}.rail-step{min-width:7.5em}}@media(max-width:420px){body{font-size:15px}.shell{padding:0 12px 48px}.panel{padding:16px}.question{font-size:1.15rem}}