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var(--border);border-radius:8px;background:var(--card);line-height:1.7;margin-bottom:12px;font-size:14px;color:var(--text-secondary)}.snip:last-child{margin-bottom:0}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.wrongbook-layout{display:grid;grid-template-columns:260px 1fr;gap:24px}.wrongbook-sidebar{border:1px solid var(--border);border-radius:var(--radius);background:var(--card);padding:16px;height:fit-content}.group-item{padding:10px 12px;border-radius:8px;cursor:pointer;font-weight:500;color:var(--text-secondary);transition:all .2s;display:flex;justify-content:space-between;align-items:center;margin-bottom:4px;border:1px solid transparent}.group-item:hover{background:var(--surface);color:var(--text)}.group-item.active{background:var(--primary-light);color:var(--primary-hover);font-weight:600}.qa-page{flex:1;display:flex;flex-direction:column;padding:0!important;max-width:none!important;margin:0!important;position:absolute;top:0;left:0;right:0;bottom:0;height:auto;overflow:hidden;z-index:0}.qa-frame-wrap{width:100%;height:100%;flex:1;border-radius:0;overflow:hidden;background:var(--surface)}.qa-frame{width:100%;height:100%;border:none;display:block}.qa-back-btn{position:fixed;top:16px;right:16px;z-index:1000;background:#ffffffdb;border:1px solid var(--border);color:var(--text);padding:10px 14px;border-radius:var(--radius-full);cursor:pointer;font-weight:700;font-size:13px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow);transition:all .2s}.qa-back-btn:hover{background:#fffffff2;transform:translateY(-1px);box-shadow:var(--shadow-lg)}.qa-back-btn:active{transform:translateY(0)}@media(max-width:768px){.qa-back-btn{top:12px;right:12px;padding:8px 12px;font-size:12px}.topbar{padding:12px 16px;flex-direction:column;gap:12px}.topbar-left,.topbar-right{width:100%;justify-content:center}.nav-inner{padding:8px 16px}.wrongbook-layout{grid-template-columns:1fr}.thead,.trow{grid-template-columns:1fr;gap:8px;padding:16px}.thead{display:none}.trow{display:flex;flex-direction:column;align-items:flex-start}}