:root{--bg: #12151b;--panel: #1a1f28;--panel-2: #222836;--line: #2d3546;--text: #e6e9f0;--muted: #8b93a7;--accent: #4f8ef7;--accent-2: #6ea1f9;--plate: #39415a;--hole: #12151b;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:14px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Apple SD Gothic Neo,Noto Sans KR,Malgun Gothic,sans-serif}#app{display:flex;height:100vh}#sidebar{width:320px;flex:none;overflow-y:auto;background:var(--panel);border-right:1px solid var(--line);padding:16px 18px 32px}.app-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.app-header h1{margin:0;font-size:20px;letter-spacing:.5px}.subtitle{margin:0;color:var(--muted);font-size:12px}.home-link{color:var(--muted);text-decoration:none;font-size:18px;padding:4px 8px;border:1px solid var(--line);border-radius:8px}.home-link:hover{color:var(--text);border-color:var(--accent)}.en{color:var(--muted);font-size:11px;font-weight:400}.group{border-top:1px solid var(--line);padding:12px 0 4px}.group h2{margin:0 0 8px;font-size:13px;font-weight:600;text-transform:none;color:var(--accent-2)}.row{margin-bottom:10px}.row label{display:block;margin-bottom:4px;color:var(--text)}.row output{color:var(--accent-2);font-weight:600}.row.check label{display:flex;align-items:center;gap:8px;cursor:pointer}.row.check input{accent-color:var(--accent);width:15px;height:15px}input[type=range]{width:100%;accent-color:var(--accent);background:transparent}.seg{display:flex;gap:4px}.seg.wrap{flex-wrap:wrap}.seg button{flex:1 0 auto;padding:6px 10px;background:var(--panel-2);color:var(--muted);border:1px solid var(--line);border-radius:8px;cursor:pointer;font:inherit;font-size:13px}.seg button:hover{color:var(--text)}.seg button.active{background:var(--accent);border-color:var(--accent);color:#fff}.actions{padding-top:16px}button.primary{width:100%;padding:12px;font:inherit;font-size:15px;font-weight:600;color:#fff;background:var(--accent);border:none;border-radius:10px;cursor:pointer}button.primary:hover{background:var(--accent-2)}button.primary .en{color:#ffffffb3}.stats{color:var(--muted);font-size:12px;margin:10px 0 0}.warn{color:#f7b64f;font-size:12px;margin:6px 0 0}#preview{flex:1;display:flex;align-items:center;justify-content:center;padding:24px;overflow:hidden;background:radial-gradient(circle at 50% 40%,#1c2230 0%,var(--bg) 75%)}#svg-host{width:100%;height:100%;display:flex;align-items:center;justify-content:center}#svg-host svg{max-width:100%;max-height:100%;filter:drop-shadow(0 12px 40px rgba(0,0,0,.55))}@media(max-width:760px){#app{flex-direction:column}#sidebar{width:100%;order:2;border-right:none;border-top:1px solid var(--line)}#preview{min-height:45vh;order:1}}