.ip-container{width:min(880px,92vw);margin:0 auto}.ip-shell{height:calc(100vh - var(--lab-header-h,56px));grid-template-columns:280px minmax(0,1fr);gap:0;min-height:520px;display:grid}.ip-rail{border-right:1px solid var(--lab-border);flex-direction:column;gap:14px;padding:14px;display:flex;overflow-y:auto}.ip-rail-head{justify-content:space-between;align-items:center;font-size:14px;font-weight:700;display:flex}.ip-list{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.ip-list-btn{text-align:left;width:100%;font:inherit;cursor:pointer;border-radius:var(--lab-radius,8px);color:var(--lab-text);background:0 0;border:1px solid #0000;flex-direction:column;gap:4px;padding:9px 11px;display:flex}.ip-list-btn:hover{background:var(--lab-surface)}.ip-list-btn.on{background:var(--lab-surface);border-color:var(--lab-accent)}.ip-list-title{text-overflow:ellipsis;white-space:nowrap;font-weight:600;overflow:hidden}.ip-list-meta{color:var(--lab-muted);align-items:center;gap:8px;font-size:12px;display:flex}.ip-main{min-height:0;padding:24px;overflow-y:auto}.ip-body{flex-direction:column;gap:16px;width:min(720px,100%);margin:0 auto;display:flex}.ip-start{flex-direction:column;gap:10px;display:flex}.ip-start textarea{resize:vertical;width:100%;min-height:120px}.ip-start input,.ip-start select,.ip-start textarea{width:100%}.ip-progress{color:var(--lab-muted);align-items:center;gap:12px;font-size:13px;display:flex}.ip-progress .lab-progress{flex:1}.ip-q{margin:0;font-size:19px;font-weight:650;line-height:1.4}.ip-why{color:var(--lab-muted);margin:8px 0 0;font-size:13px}.ip-covers{color:var(--lab-muted);margin:8px 0 0 18px;padding:0;font-size:13px}.ip-covers li{margin:2px 0}.ip-answer{resize:vertical;width:100%;min-height:160px}.ip-feedback{white-space:pre-wrap;font-size:14px;line-height:1.55}.ip-score{align-items:center;gap:10px;display:flex}.ip-score-n{font-size:26px;font-weight:800;line-height:1}.ip-score-n.good{color:var(--lab-accent)}.ip-steps{flex-wrap:wrap;gap:6px;display:flex}.ip-step{cursor:pointer;width:30px;height:30px;font:inherit;border:1px solid var(--lab-border);color:var(--lab-muted);background:0 0;border-radius:999px;font-size:12px}.ip-step.on{border-color:var(--lab-accent);color:var(--lab-text)}.ip-step.done{background:color-mix(in srgb, var(--lab-accent) 22%, transparent);color:var(--lab-text)}@media (width<=860px){.ip-shell{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr);height:auto}.ip-rail{border-right:0;border-bottom:1px solid var(--lab-border);max-height:40vh}.ip-main{padding:16px 12px}}