@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
:root{font-family:Pretendard,'Noto Sans KR',sans-serif;color:#313e45;background:#f4f5f5;--accent:#1b8577;--line:#dce1e3;--muted:#7a858a}*{box-sizing:border-box}body{margin:0}header{height:72px;background:white;display:flex;justify-content:space-between;align-items:center;padding:0 28px;border-bottom:1px solid var(--line)}a{color:inherit;text-decoration:none}.brand{display:flex;align-items:center;gap:10px;font-weight:700}.brand b{display:grid;place-items:center;border-radius:9px;background:var(--accent);color:white;width:30px;height:30px;font-size:24px}.brand span{font-weight:400;color:#8b969a;margin-left:8px}nav{display:flex;align-items:center;gap:24px;font-size:13px}.badge{color:var(--accent);background:#e4f4f1;padding:6px 9px;border-radius:5px}.workbench{display:grid;grid-template-columns:226px minmax(450px,1fr) 242px;gap:18px;padding:24px;max-width:1650px;margin:auto}.settings,.results{background:white;border:1px solid var(--line);border-radius:12px;padding:20px;align-self:start}h1{font-size:22px;margin:0 0 24px}h2{font-size:19px;margin:0}h3{font-size:13px;margin:0 0 14px}label{display:block;font-size:12px;margin:14px 0;color:#53616a}input,select,button{font:inherit}input[type=number],select{display:block;width:100%;margin-top:7px;border:1px solid #d3dbdd;border-radius:6px;background:white;color:#273841;padding:9px 10px;font-size:14px}small{float:right;color:#919b9f}details{border-top:1px solid var(--line);padding-top:17px;margin-top:20px}summary{font-size:13px;font-weight:600;cursor:pointer}.check{display:flex;align-items:center;gap:8px}.check input{accent-color:var(--accent)}button{cursor:pointer;background:white;border:1px solid #d4dddd;border-radius:7px;padding:10px 14px;color:#40515a;font-size:13px}.primary{background:var(--accent);color:white;border-color:var(--accent)}button:hover{filter:brightness(.96)}button:disabled{opacity:.5;cursor:default}.stage{min-width:0;background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.stage-toolbar{padding:22px 24px 17px;display:flex;justify-content:space-between;align-items:center}.eyebrow{font-size:10px;letter-spacing:.14em;color:#9a7770;display:block;margin-bottom:7px}#status{font-size:12px;color:var(--accent);background:#e4f4f1;padding:7px 10px;border-radius:5px}.controls{padding:12px 24px;border-top:1px solid #edf0f1;border-bottom:1px solid #edf0f1;display:flex;gap:8px;align-items:center}.controls span{font-size:12px;color:var(--muted);margin-left:6px}.controls span:last-child{margin-left:auto}#scene{display:block;width:100%;background:#f7f9f9}svg text{font-family:Pretendard,sans-serif}.equations{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:20px;padding:24px;border-top:1px solid #e6ebec;min-height:82px}.equation-item{max-width:100%;font-size:20px;display:flex;align-items:center}math{font-family:'Cambria Math','Times New Roman',serif}#particle-panel{border-top:1px solid var(--line);padding:20px 24px 10px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:15px}#particle-legend{display:flex;gap:14px;font-size:10px;color:#77838a}#particle-legend i{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:4px}#micro{width:100%;display:block}.metric{padding:17px 0;border-bottom:1px solid #e6ebec}.metric span{display:block;color:#7c898f;font-size:12px;margin-bottom:8px}.metric strong{font-size:22px;font-weight:600;letter-spacing:-.03em}.metric em{font-size:12px;font-style:normal;color:#7a868c;margin-left:5px}.results section{margin-top:26px}#chart{width:100%}#error{font-size:12px;color:#ad4027;line-height:1.5}.plan{max-width:1160px;margin:40px auto;padding:0 26px 80px}.plan h1{font-size:32px;margin:12px 0 20px}.plan h2{font-size:23px;margin:36px 0 18px}.plan p,.plan li{line-height:1.8;font-size:14px;color:#56636b}.plan .intro{font-size:17px;max-width:850px}.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.plan article{background:white;border:1px solid var(--line);padding:23px;border-radius:10px}.plan article h3{font-size:17px;color:var(--accent)}.plan table{border-collapse:collapse;width:100%;background:white;font-size:12px}.plan th,.plan td{padding:13px 12px;border:1px solid var(--line);text-align:left;line-height:1.6}.plan th{background:#fff1e8}.plan .tag{color:var(--accent);font-size:12px}.plan .sources{font-size:12px}.plan .sources a{color:#b95825;text-decoration:underline}@media(max-width:1100px){.workbench{grid-template-columns:215px minmax(0,1fr)}.results{grid-column:2}.results #metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.results section{max-width:430px}.plan-grid{grid-template-columns:1fr}}@media(max-width:700px){header{padding:0 16px}.brand span{display:none}.workbench{display:block;padding:12px}.settings,.stage,.results{margin-bottom:14px}.stage-toolbar,.controls{padding-left:15px;padding-right:15px}.plan{padding:0 12px 40px}.plan table{font-size:11px}.plan th,.plan td{padding:9px 6px}}