html, body { margin: 0; height: 100%; background: #000; overflow: hidden; font-family: "Microsoft YaHei", "PingFang SC", sans-serif; }
body { display: flex; align-items: center; justify-content: center; }
canvas { display: block; }
#gear { position: fixed; right: 8px; top: 50%; width: 34px; height: 34px; border-radius: 50%; border: 1px solid #6a5030; background: rgba(30,20,10,.6); color: #d8b070; font-size: 18px; cursor: pointer; opacity: .35; }
#gear:hover { opacity: 1; }
#panel { position: fixed; right: 0; top: 0; bottom: 0; width: 340px; overflow-y: auto; background: rgba(18,12,8,.96); color: #e8dcc4; border-left: 1px solid #6a5030; padding: 14px; font-size: 13px; box-sizing: border-box; z-index: 5; }
#panel h3 { margin: 14px 0 6px; color: #ffd27a; font-size: 14px; }
#panel button { margin: 2px 4px 2px 0; padding: 4px 8px; background: #3a2a18; color: #f0e0c0; border: 1px solid #7a5a30; border-radius: 4px; cursor: pointer; }
#panel input[type=number], #panel input[type=text] { width: 80px; background: #2a1e12; color: #fff; border: 1px solid #6a5030; padding: 3px; }
#panel textarea { width: 100%; height: 60px; background: #2a1e12; color: #fff; border: 1px solid #6a5030; }
#panel .st { padding: 6px; border-radius: 4px; background: #2a1e12; }
#blocked { position: fixed; inset: 0; background: rgba(0,0,0,.85); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 20px; text-align: center; z-index: 9; }
#blocked[hidden], #panel[hidden] { display: none; }