:root{
  --bg:#0f1115; --panel:#171a21; --line:#262b36; --txt:#e7e9ee; --muted:#9aa3b2;
  --accent:#5b8cff; --accent2:#3ad29f;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--txt);font:15px/1.5 system-ui,"Segoe UI",Roboto,Arial,sans-serif}
.app{max-width:920px;margin:0 auto;padding:16px}
.top h1{font-size:22px;margin:0}
.top .sub{color:var(--muted);margin:4px 0 14px}
.tool{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}
.drop{display:flex;flex-direction:column;align-items:center;gap:10px;padding:28px;border:2px dashed var(--line);border-radius:10px}
.drop .or{color:var(--muted);font-size:13px}
button{font:inherit;cursor:pointer;border:1px solid var(--line);background:#1f2430;color:var(--txt);padding:10px 14px;border-radius:9px;min-height:44px}
button:hover{border-color:var(--accent)}
button.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
button:disabled{opacity:.5;cursor:default}
.hidden{display:none}
.editor{display:flex;flex-direction:column;gap:12px}
.canvas-wrap{width:100%;overflow:hidden;border:1px solid var(--line);border-radius:8px;background:#0b0d12;display:flex;justify-content:center}
#view{max-width:100%;height:auto;touch-action:none;cursor:crosshair;background:#0b0d12;display:block}
.controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.controls label{display:flex;align-items:center;gap:6px;color:var(--muted)}
.controls input[type=range]{width:120px}
.status{width:100%;color:var(--muted);min-height:20px;margin:0}
.facts,.can,.faq{margin-top:18px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}
.facts h2,.can h2,.faq h2{font-size:17px;margin:0 0 10px}
.facts ul,.can ul{margin:0;padding-left:18px}
.facts li,.can li{margin:6px 0}
.two{display:flex;gap:16px;flex-wrap:wrap}
.two>div{flex:1;min-width:240px}
details{border-top:1px solid var(--line);padding:8px 0}
summary{cursor:pointer;font-weight:600}
footer{margin-top:18px;color:var(--muted);font-size:13px;text-align:center}
footer nav{margin-bottom:8px}
footer nav a{color:var(--accent);text-decoration:none}
footer nav a:hover{text-decoration:underline}
@media (max-width:560px){
  .app{padding:10px}
  .top h1{font-size:19px}
  .controls{flex-direction:column;align-items:stretch}
  .controls label{justify-content:space-between}
  .controls label.fmt{justify-content:space-between}
}