:root{--bg:#05070a;--panel:#090d12;--border:#1c2229;--text:#fff;--muted:#7d8792;--accent:#65ff9a;--space-1:4px;--space-2:8px;--space-3:16px;--space-4:24px;--space-5:32px;--radius-sm:4px;--radius-md:8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background:var(--bg);color:var(--text);min-height:100vh}.aera{flex-direction:column;min-height:100vh;display:flex}.topbar{padding:var(--space-4) var(--space-5);border-bottom:1px var(--border);justify-content:space-between;align-items:center;display:flex}.topbar h1{letter-spacing:6px;font-size:28px}.topbar p{margin-top:var(--space-1);color:var(--muted);font-size:13px}.status{align-items:centers;gap:var(--space-2);letter-spacing:2px;font-size:12px;display:flex}.status-dot{width:var(--space-2);height:var(--space-2);background:var(--bg);border-radius:50%}.workspace{flex:1;justify-content:center;align-items:center;padding:30px;display:flex}.camera-container{aspect-ratio:16/9;background:var(--panel);border:1px solid #29313a;width:min(1100px,90vw);position:relative;overflow:hidden}.camera-container video{object-fit:cover;width:100%;height:100%;display:block}.camera-placeholder{color:#66717c;flex-direction:column;justify-content:center;align-items:center;position:absolute;inset:0}.camera-icon{margin-bottom:15px;font-size:40px}.camera-placeholder h2{color:#aeb7c0;margin-bottom:6px;font-size:20px}.camera-placeholder p{font-size:13px}.object-layer{pointer-events:none;position:absolute;inset:0}.shape{opacity:.8;border:2px solid #fff;position:absolute}.circle{border-radius:50%;width:70px;height:70px;top:35%;left:30%}.square{width:60px;height:60px;top:45%;left:50%}.triangle{background:0 0;border:35px solid #0000;border-top:none;border-bottom:60px solid #fff;width:0;height:0;top:30%;left:65%}.controlbar{padding:18px var(--space-5);border-top:1px solid var(--border);color:var(--muted);align-items:center;gap:30px;font-size:13px;display:flex}.controlbar strong{color:#fff}#start-button{color:#000;cursor:pointer;background:#fff;border:none;margin-left:auto;padding:12px 20px;font-weight:700}#start-button:hover{background:#dce2e8}