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.18s}.tutor-reset-btn:hover{border-color:var(--blue-500);color:var(--blue-900)}.tutor-memory-badge{display:inline-flex;align-items:center;gap:4px;margin-left:10px;padding:2px 8px;border-radius:20px;background:rgba(99,102,241,.08);color:#6366f1;font-size:11px;font-weight:600;vertical-align:middle;letter-spacing:.01em}.research-tabs{display:flex;gap:8px;padding:0 32px;flex-wrap:wrap}.research-tab{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font:500 13px var(--font-body);cursor:pointer;transition:all .18s;white-space:nowrap}.research-tab.active,.research-tab:hover{border-color:var(--blue-500);color:var(--blue-900)}.research-tab.active{background:var(--surface-blue);font-weight:700}.research-empty{flex:1;display:flex;align-items:center;justify-content:center;padding:40px}.research-empty-hint{color:var(--muted);font-size:15px;line-height:1.7;max-width:52ch;text-align:center}.decks-grid{display:grid;gap:12px}.deck-card{display:flex;align-items:center;gap:16px;padding:18px 20px;border-radius:var(--radius-md);border:1px solid var(--line);background:var(--surface-alt);transition:all .18s}.deck-card:hover{border-color:var(--blue-500);box-shadow:var(--shadow-sm)}.deck-card-body{flex:1}.deck-card-name{display:block;font-size:15px;font-weight:600;color:var(--ink);margin-bottom:4px}.deck-card-meta{font-size:13px;color:var(--muted)}.deck-card-actions{display:flex;gap:8px;align-items:center}.deck-study-btn{padding:8px 18px;border-radius:999px;border:none;background:var(--blue-900);color:#fff;font:600 13px var(--font-body);cursor:pointer;transition:all .18s}.deck-study-btn:hover{background:var(--blue-700)}.deck-rename-btn{padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font:600 13px var(--font-body);cursor:pointer;transition:all .18s}.deck-rename-btn:hover{border-color:var(--blue-500);color:var(--blue-900)}.deck-delete-btn{width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;cursor:pointer;transition:all .18s;display:flex;align-items:center;justify-content:center}.deck-delete-btn:hover{border-color:#e05a4d;color:#e05a4d}.deck-edit-input{width:min(100%,260px);padding:8px 12px;border:1px solid var(--blue-500);border-radius:10px;background:#fff;font:600 14px var(--font-body);color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(91,142,245,.12)}@media (max-width:900px){.ws-root{grid-template-columns:1fr}.workspace-stage{padding-top:20px}.ws-sidebar{position:fixed;left:-260px;z-index:100;transition:left .3s ease;height:100vh}.ws-sidebar.open{left:0}.ws-main{padding:16px}.ws-panel{padding:20px;min-height:auto}.gen-layout{grid-template-columns:1fr}.chat-messages{padding:16px}.chat-input-row{padding:12px 16px}.research-tabs{padding:0 16px}}