.paper-box-caption{background:var(--surface-soft);border-radius:var(--radius-small);min-height:94px;padding:14px 17px}.paper-box-caption strong{font-size:15px}.paper-box-caption p{color:var(--muted);margin:7px 0 0;font-size:13px;line-height:1.85}.paper-box-camera{flex-wrap:wrap;align-items:center;gap:9px;padding-top:14px;display:flex}.paper-box-camera>span{color:var(--muted);margin-right:auto;font-size:12px}.paper-box-camera .button{padding:9px 12px}.paper-box-canvas{isolation:isolate;touch-action:none;width:100%;height:450px;position:relative}.paper-box-canvas canvas{touch-action:none}.paper-box-label{white-space:nowrap;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:2px 6px;font-size:12px;font-weight:600;line-height:1.6;display:block}.paper-box-label--base{background:var(--highlight)}.paper-box-key{color:var(--muted);flex-wrap:wrap;justify-content:center;gap:10px 22px;font-size:12px;display:flex}.paper-box-key span{align-items:center;gap:6px;display:inline-flex}.paper-box-key i{border:1px solid var(--line-strong);border-radius:3px;width:14px;height:14px}.paper-box-key--base{background:var(--highlight)}.paper-box-key--wall{background:var(--accent-soft)}.paper-box-key--corner{background:var(--line)}.paper-box-equations{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px;display:grid}.paper-box-equations p{border:1px solid var(--line);border-radius:var(--radius-small);margin:0;padding:14px 17px}.paper-box-equations span{color:var(--muted);margin-bottom:6px;font-size:12px;display:block}.paper-box-equations strong{font-size:16px;display:block}.paper-box-equations .paper-box-result{background:var(--surface-soft);grid-column:1/-1}.paper-box-result strong{font-size:23px}@media (width<=700px){.paper-box-canvas{height:340px}.paper-box-label{padding:2px 4px;font-size:10px}.paper-box-equations{grid-template-columns:1fr}.paper-box-camera>span{flex-basis:100%}.paper-box-caption{min-height:116px}}