@import"https://fonts.googleapis.com/css2?family=VT323&display=swap";.create-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.create-modal-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:420px;animation:slideUp .3s ease-out}.create-modal-header{padding:var(--space-lg);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:var(--space-sm)}.create-modal-icon{width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:#f1f5f9;color:#475569;border:1px solid #e2e8f0;flex-shrink:0}.create-modal-icon.is-study{background:#eff6ff;color:#2563eb;border-color:#dbeafe}.create-modal-title{flex:1;margin:0;font-size:var(--font-lg);font-weight:600;color:var(--text-main)}.create-modal-close{background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.create-modal-close:hover{color:var(--text-main)}.create-modal-body{padding:var(--space-lg)}.create-modal-form-group{margin-bottom:var(--space-lg)}.create-modal-label{display:block;font-size:var(--font-sm);font-weight:500;color:var(--text-main);margin-bottom:var(--space-xs)}.create-modal-input{width:100%;padding:var(--space-sm) var(--space-md);font-size:var(--font-md);font-family:var(--font-family);border:2px solid var(--border);border-radius:var(--radius-sm);transition:border-color .2s ease;box-sizing:border-box}.create-modal-input:focus{outline:none;border-color:var(--primary)}.create-modal-input:disabled{background-color:var(--bg-secondary);cursor:not-allowed}.create-modal-error{margin-top:var(--space-xs);font-size:var(--font-xs);color:var(--error);min-height:16px}.create-modal-footer{display:flex;gap:var(--space-sm);justify-content:flex-end}.create-modal-btn{padding:var(--space-xs) var(--space-lg);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:2px solid transparent}.create-modal-btn:disabled{opacity:.5;cursor:not-allowed}.create-modal-btn-cancel{background:transparent;border-color:var(--border);color:var(--text-secondary)}.create-modal-btn-cancel:hover:not(:disabled){border-color:var(--text-secondary);color:var(--text-main)}.create-modal-btn-create{background-color:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1a73e833}.create-modal-btn-create:hover:not(:disabled){background-color:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 4px 8px #1a73e84d;transform:translateY(-1px)}.create-modal-btn-create:active:not(:disabled){transform:scale(.98)}.node-actions-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.node-actions-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:320px;animation:slideUp .3s ease-out}.node-actions-header{position:relative;padding:50px var(--space-lg) 15px;display:flex;align-items:center;justify-content:center}.node-actions-title{position:relative;margin:0;font-size:25px;font-weight:500;font-family:var(--font-family);color:var(--text-main);line-height:1.4;word-break:break-word;text-align:center;cursor:default;transition:color .2s ease}.node-actions-title:hover{color:var(--primary)}.info-tooltip{display:none;position:absolute;top:calc(100% + 8px);left:50%;transform:translate(-50%);background-color:#1a1a1a;color:#fff;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);white-space:nowrap;font-size:var(--font-xs);font-weight:400;z-index:1001;box-shadow:0 4px 12px #0006}.node-actions-title:hover .info-tooltip{display:block}.tooltip-row{display:flex;align-items:center;gap:var(--space-xs);margin-bottom:var(--space-sm);padding-bottom:var(--space-sm);border-bottom:1px solid rgba(255,255,255,.15)}.tooltip-icon{font-size:18px;line-height:1}.tooltip-type{font-size:var(--font-sm);font-weight:600}.tooltip-item{font-size:var(--font-xs);line-height:1.6;color:#ffffffe6}.node-actions-close{position:absolute;top:var(--space-lg);right:var(--space-lg);background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.node-actions-close:hover{color:var(--text-main)}.node-actions-body{padding:15px var(--space-lg) var(--space-lg);display:flex;flex-direction:column;gap:var(--space-sm)}.node-action-btn{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text-main);cursor:pointer;transition:all .2s ease;text-align:left}.node-action-btn:hover{border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow-1)}.node-action-btn:active{transform:translateY(0)}.action-icon{font-size:20px;line-height:1;flex-shrink:0}.action-label{flex:1}.node-action-btn-share{border-color:var(--primary, #4e7fff);color:var(--primary, #4e7fff)}.node-action-btn-share:hover{border-color:var(--primary, #4e7fff);background:#4e7fff0f;box-shadow:0 2px 8px #4e7fff2e}.node-action-btn-danger{border-color:var(--error);color:var(--error)}.node-action-btn-danger:hover{border-color:var(--error);background:#d930250d;box-shadow:0 2px 4px #d9302533}.nsm-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000007a;display:flex;align-items:center;justify-content:center;z-index:1200;animation:nsm-fade-in .16s ease;padding:16px}@keyframes nsm-fade-in{0%{opacity:0}to{opacity:1}}.nsm-card{background:var(--surface, #fff);border-radius:18px;box-shadow:0 28px 64px #00000038,0 6px 20px #0000001f,0 0 0 1px #0000000a;width:420px;max-width:100%;max-height:90vh;overflow-y:auto;animation:nsm-slide-up .24s cubic-bezier(.34,1.4,.64,1)}@keyframes nsm-slide-up{0%{opacity:0;transform:translateY(20px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.nsm-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px 16px;border-bottom:1px solid var(--border, rgba(128, 128, 128, .1));gap:8px}.nsm-header-meta{display:flex;align-items:center;gap:10px;min-width:0}.nsm-node-icon{font-size:22px;line-height:1;flex-shrink:0}.nsm-header-text{display:flex;flex-direction:column;gap:1px;min-width:0}.nsm-header-eyebrow{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary, #888);line-height:1}.nsm-node-title{font-size:15px;font-weight:600;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3}.nsm-close{width:30px;height:30px;border:none;background:none;border-radius:50%;font-size:20px;line-height:1;cursor:pointer;color:var(--text-secondary, #999);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .14s,color .14s}.nsm-close:hover{background:var(--surface-hover, rgba(128, 128, 128, .1));color:var(--text-main)}.nsm-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}.nsm-section-label{font-size:10px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--text-secondary, #888)}.nsm-vis-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.nsm-vis-card{position:relative;display:flex;flex-direction:column;align-items:center;gap:5px;padding:14px 8px 12px;border:1.5px solid var(--border, rgba(128, 128, 128, .18));border-radius:12px;background:transparent;cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s,transform .12s;color:inherit;text-align:center;outline:none}.nsm-vis-card:hover:not(:disabled){border-color:#4e7fff73;background:#4e7fff08;box-shadow:0 2px 10px #4e7fff1a;transform:translateY(-1px)}.nsm-vis-card:active:not(:disabled){transform:translateY(0)}.nsm-vis-card.is-active{border-color:var(--primary, #4e7fff);background:#4e7fff12;box-shadow:0 0 0 3px #4e7fff1f}.nsm-vis-card:disabled{opacity:.5;cursor:default}.nsm-vis-dot{position:absolute;top:8px;right:8px;width:6px;height:6px;border-radius:50%;background:var(--primary, #4e7fff)}.nsm-vis-icon{font-size:24px;line-height:1}.nsm-vis-label{font-size:12px;font-weight:600;color:var(--text-main);line-height:1}.nsm-vis-card.is-active .nsm-vis-label{color:var(--primary, #4e7fff)}.nsm-vis-desc{font-size:10px;color:var(--text-secondary, #888);line-height:1.3}.nsm-share-panel{display:flex;flex-direction:column;gap:9px;padding-top:12px;border-top:1px solid var(--border, rgba(128, 128, 128, .1));animation:nsm-expand .2s ease}@keyframes nsm-expand{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.nsm-user-list{display:flex;flex-direction:column;gap:4px;max-height:140px;overflow-y:auto}.nsm-user-row{display:flex;align-items:center;gap:9px;padding:7px 9px;border-radius:9px;background:var(--surface-muted, rgba(128, 128, 128, .04));border:1px solid var(--border, rgba(128, 128, 128, .1))}.nsm-user-row--owner{background:#4e7fff0d;border-color:#4e7fff24}.nsm-avatar{width:28px;height:28px;border-radius:50%;background:#80808024;color:var(--text-secondary, #888);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0}.nsm-avatar--owner{background:var(--primary, #4e7fff);color:#fff}.nsm-user-name{flex:1;font-size:13px;font-weight:500;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nsm-badge{font-size:10px;font-weight:600;padding:2px 7px;border-radius:100px;background:#8080801a;color:var(--text-secondary, #888);white-space:nowrap;flex-shrink:0}.nsm-badge--owner{background:#4e7fff1f;color:var(--primary, #4e7fff)}.nsm-remove-btn{width:22px;height:22px;border:none;background:none;cursor:pointer;font-size:17px;line-height:1;color:var(--text-secondary, #999);opacity:.55;display:flex;align-items:center;justify-content:center;border-radius:50%;padding:0;flex-shrink:0;transition:opacity .14s,background .14s,color .14s}.nsm-remove-btn:hover{opacity:1;background:#e052521a;color:var(--error, #e05252)}.nsm-search-row{display:flex;gap:7px;align-items:center}.nsm-search-input-wrap{flex:1;display:flex;align-items:center;gap:7px;border:1.5px solid var(--border, rgba(128, 128, 128, .2));border-radius:9px;padding:0 10px;height:36px;background:var(--surface, #fff);transition:border-color .15s,box-shadow .15s}.nsm-search-input-wrap:focus-within{border-color:var(--primary, #4e7fff);box-shadow:0 0 0 3px #4e7fff1f}.nsm-search-icon{font-size:12px;flex-shrink:0;opacity:.6}.nsm-search-input{flex:1;border:none;outline:none;background:transparent;font-size:13px;color:var(--text-main, #111);min-width:0}.nsm-search-input::placeholder{color:var(--text-secondary, #aaa)}.nsm-search-btn{height:36px;padding:0 16px;border:none;border-radius:9px;background:var(--primary, #4e7fff);color:#fff;font-size:12px;font-weight:600;cursor:pointer;flex-shrink:0;transition:opacity .14s,transform .1s}.nsm-search-btn:hover:not(:disabled){opacity:.88;transform:translateY(-1px)}.nsm-search-btn:active:not(:disabled){transform:translateY(0)}.nsm-search-btn:disabled{opacity:.4;cursor:default}.nsm-results{display:flex;flex-direction:column;gap:4px}.nsm-result-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;border:1px solid var(--border, rgba(128, 128, 128, .12));background:none;cursor:pointer;color:inherit;text-align:left;width:100%;transition:background .13s,border-color .13s}.nsm-result-item:hover{background:#4e7fff0d;border-color:#4e7fff38}.nsm-result-name{flex:1;font-size:13px;font-weight:500;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nsm-result-add{font-size:11px;font-weight:700;color:var(--primary, #4e7fff);flex-shrink:0}.nsm-no-results{font-size:12px;color:var(--text-secondary, #888)}.nsm-error{font-size:11px;color:var(--error, #e05252)}.nsm-cascade-hint{display:block;font-size:11px;color:var(--text-secondary);margin-top:6px;padding:6px 8px;background:var(--surface-raised, rgba(0,0,0,.04));border-radius:var(--radius-sm, 4px);border-left:2px solid var(--primary, #4e7fff)}.move-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.move-modal-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:420px;animation:slideUp .3s ease-out}.move-modal-header{position:relative;padding:50px var(--space-lg) 15px;display:flex;align-items:center;justify-content:center}.move-modal-title{position:relative;margin:0;font-size:25px;font-weight:500;font-family:var(--font-family);color:var(--text-main);line-height:1.4;text-align:center}.move-modal-close{position:absolute;top:var(--space-lg);right:var(--space-lg);background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.move-modal-close:hover{color:var(--text-main)}.move-modal-body{padding:15px var(--space-lg) var(--space-lg);position:relative}.move-modal-label{display:block;font-size:16px;font-weight:500;font-family:var(--font-family);color:var(--text-main);margin-bottom:var(--space-xs)}.move-modal-input{width:100%;height:36px;padding:var(--space-sm) var(--space-md);font-size:var(--font-md);font-family:var(--font-family);border:2px solid var(--border);border-radius:var(--radius-sm);transition:border-color .2s ease;box-sizing:border-box}.move-modal-input:focus{outline:none;border-color:var(--primary)}.move-modal-input.shake{animation:shake .3s ease-in-out;border-color:var(--error)}.folder-dropdown{position:absolute;top:calc(100% - 8px);left:var(--space-lg);right:var(--space-lg);max-height:300px;overflow-y:auto;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-2);z-index:10}.folder-tree-list{padding:var(--space-xs) 0}.folder-tree-item{-webkit-user-select:none;user-select:none}.folder-tree-row{display:flex;align-items:center;justify-content:flex-start;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);cursor:pointer;transition:background-color .15s ease}.folder-tree-row:hover{background-color:var(--bg-hover)}.expand-icon{width:16px;font-size:10px;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}.expand-icon-placeholder{width:16px;flex-shrink:0}.folder-name{font-size:18px;font-weight:500;font-family:var(--font-family);color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.folder-loading{padding:var(--space-sm) var(--space-md);font-size:var(--font-sm);color:var(--text-secondary)}.folder-tree-empty{padding:var(--space-md);text-align:center;font-size:var(--font-sm);color:var(--text-secondary)}.move-modal-footer{padding:var(--space-md) var(--space-lg) var(--space-lg);display:flex;gap:var(--space-sm);justify-content:flex-end}.move-modal-btn{padding:var(--space-xs) var(--space-lg);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:2px solid transparent}.move-modal-btn:disabled{opacity:.5;cursor:not-allowed}.move-modal-btn-cancel{background:transparent;border-color:var(--border);color:var(--text-secondary)}.move-modal-btn-cancel:hover:not(:disabled){border-color:var(--text-secondary);color:var(--text-main)}.move-modal-btn-move{background-color:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1a73e833}.move-modal-btn-move:hover:not(:disabled){background-color:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 4px 8px #1a73e84d;transform:translateY(-1px)}.move-modal-btn-move:active:not(:disabled){transform:scale(.98)}.rename-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.rename-modal-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:420px;animation:slideUp .3s ease-out}.rename-modal-header{position:relative;padding:50px var(--space-lg) 15px;display:flex;align-items:center;justify-content:center}.rename-modal-title{position:relative;margin:0;font-size:25px;font-weight:500;font-family:var(--font-family);color:var(--text-main);line-height:1.4;text-align:center}.rename-modal-close{position:absolute;top:var(--space-lg);right:var(--space-lg);background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.rename-modal-close:hover{color:var(--text-main)}.rename-modal-body{padding:15px var(--space-lg) var(--space-lg)}.rename-modal-label{display:block;font-size:16px;font-weight:500;font-family:var(--font-family);color:var(--text-main);margin-bottom:var(--space-xs)}.rename-modal-input{width:100%;height:36px;padding:var(--space-sm) var(--space-md);font-size:var(--font-md);font-family:var(--font-family);border:2px solid var(--border);border-radius:var(--radius-sm);transition:border-color .2s ease;box-sizing:border-box}.rename-modal-input:focus{outline:none;border-color:var(--primary)}.rename-modal-input:disabled{opacity:.5;cursor:not-allowed}.rename-modal-error{margin-top:var(--space-xs);font-size:var(--font-sm);color:var(--error);animation:shake .3s ease-in-out}.rename-modal-footer{padding:var(--space-md) var(--space-lg) var(--space-lg);display:flex;gap:var(--space-sm);justify-content:flex-end}.rename-modal-btn{padding:var(--space-xs) var(--space-lg);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:2px solid transparent}.rename-modal-btn:disabled{opacity:.5;cursor:not-allowed}.rename-modal-btn-cancel{background:transparent;border-color:var(--border);color:var(--text-secondary)}.rename-modal-btn-cancel:hover:not(:disabled){border-color:var(--text-secondary);color:var(--text-main)}.rename-modal-btn-rename{background-color:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1a73e833}.rename-modal-btn-rename:hover:not(:disabled){background-color:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 4px 8px #1a73e84d;transform:translateY(-1px)}.rename-modal-btn-rename:active:not(:disabled){transform:scale(.98)}.delete-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}.delete-modal-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:420px;animation:slideUp .3s ease-out}.delete-modal-header{position:relative;padding:50px var(--space-lg) 15px;display:flex;align-items:center;justify-content:center}.delete-modal-title{position:relative;margin:0;font-size:25px;font-weight:500;font-family:var(--font-family);color:var(--text-main);line-height:1.4;text-align:center}.delete-modal-close{position:absolute;top:var(--space-lg);right:var(--space-lg);background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.delete-modal-close:hover{color:var(--text-main)}.delete-modal-body{padding:15px var(--space-lg) var(--space-lg)}.delete-modal-warning{text-align:center}.delete-modal-message{font-size:16px;font-family:var(--font-family);color:var(--text-main);margin:0 0 var(--space-md) 0;line-height:1.5}.delete-modal-node-info{font-size:18px;font-family:var(--font-family);color:var(--text-main);margin:var(--space-md) 0;padding:var(--space-md);background-color:var(--bg-hover);border-radius:var(--radius-sm)}.delete-modal-hint{font-size:14px;font-family:var(--font-family);color:var(--text-secondary);margin:var(--space-md) 0 0 0;font-style:italic}.delete-modal-error{margin-top:var(--space-md);font-size:var(--font-sm);color:var(--error);text-align:center;animation:shake .3s ease-in-out}.delete-modal-footer{padding:var(--space-md) var(--space-lg) var(--space-lg);display:flex;gap:var(--space-sm);justify-content:flex-end}.delete-modal-btn{padding:var(--space-xs) var(--space-lg);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:2px solid transparent}.delete-modal-btn:disabled{opacity:.5;cursor:not-allowed}.delete-modal-btn-cancel{background:transparent;border-color:var(--primary);color:var(--primary)}.delete-modal-btn-cancel:hover:not(:disabled){background-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1a73e833}.delete-modal-btn-delete{background:transparent;border-color:var(--error);color:var(--error)}.delete-modal-btn-delete:hover:not(:disabled){background-color:var(--error);color:#fff;box-shadow:0 2px 4px #dc26264d;transform:translateY(-1px)}.delete-modal-btn-delete:active:not(:disabled){transform:scale(.98)}.drag-move-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.drag-move-modal-card{background-color:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-3);width:100%;max-width:420px;animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.drag-move-modal-header{position:relative;padding:50px var(--space-lg) 15px;display:flex;align-items:center;justify-content:center}.drag-move-modal-title{position:relative;margin:0;font-size:25px;font-weight:500;font-family:var(--font-family);color:var(--text-main);line-height:1.4;text-align:center}.drag-move-modal-close{position:absolute;top:var(--space-lg);right:var(--space-lg);background:none;border:none;font-size:28px;line-height:1;cursor:pointer;color:var(--text-secondary);transition:color .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center}.drag-move-modal-close:hover{color:var(--text-main)}.drag-move-modal-body{padding:15px var(--space-lg) var(--space-lg)}.drag-move-modal-confirmation{text-align:center}.drag-move-modal-message{font-size:16px;font-family:var(--font-family);color:var(--text-main);margin:0 0 var(--space-sm) 0;line-height:1.5}.drag-move-modal-node-info{font-size:18px;font-family:var(--font-family);color:var(--text-main);margin:var(--space-sm) 0;padding:var(--space-md);background-color:var(--bg-hover);border-radius:var(--radius-sm)}.drag-move-modal-error{margin-top:var(--space-md);font-size:var(--font-sm);color:var(--error);text-align:center;animation:shake .3s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.drag-move-modal-footer{padding:var(--space-md) var(--space-lg) var(--space-lg);display:flex;gap:var(--space-sm);justify-content:flex-end}.drag-move-modal-btn{padding:var(--space-xs) var(--space-lg);font-size:var(--font-md);font-weight:500;font-family:var(--font-family);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:2px solid transparent}.drag-move-modal-btn:disabled{opacity:.5;cursor:not-allowed}.drag-move-modal-btn-cancel{background:transparent;border-color:var(--primary);color:var(--primary)}.drag-move-modal-btn-cancel:hover:not(:disabled){background-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1a73e833}.drag-move-modal-btn-confirm{background-color:var(--primary);border-color:var(--primary);color:#fff}.drag-move-modal-btn-confirm:hover:not(:disabled){background-color:var(--primary-hover);border-color:var(--primary-hover);box-shadow:0 2px 4px #1a73e84d;transform:translateY(-1px)}.drag-move-modal-btn-confirm:active:not(:disabled){transform:scale(.98)}.logout-button-wrapper{position:relative;width:200px;margin:0 auto;padding:var(--space-md)}.logout-button{width:200px;padding:var(--space-xs) var(--space-sm);font-size:var(--font-md);border:2px solid var(--primary);background:transparent;color:var(--primary);border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-family);font-weight:500;transition:all .2s ease;text-align:center}.logout-button:hover{border-color:var(--error);color:var(--error)}.logout-button:active{transform:scale(.98)}.logout-dialog{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);width:200px;background-color:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow-3);padding:var(--space-md);z-index:1001;animation:dialogSlideUp .2s ease-out}@keyframes dialogSlideUp{0%{opacity:0;transform:translate(-50%) translateY(8px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.logout-dialog-text{margin:0 0 var(--space-md) 0;font-size:var(--font-sm);color:var(--text-main);text-align:center;line-height:1.4}.logout-dialog-buttons{display:flex;gap:var(--space-sm);justify-content:center}.logout-dialog-btn{flex:1;padding:var(--space-xs) var(--space-sm);font-size:var(--font-sm);border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-family);font-weight:500;transition:all .2s ease;border:2px solid}.logout-btn-no{border-color:var(--primary);background:transparent;color:var(--primary)}.logout-btn-no:hover{background-color:var(--primary-bg)}.logout-btn-yes{border-color:var(--error);background:transparent;color:var(--error)}.logout-btn-yes:hover{background-color:#d9302514}.logout-dialog-btn:active{transform:scale(.97)}.sort-toggles{display:flex;gap:8px;align-items:center}.sort-toggle{display:flex;align-items:center;gap:4px;padding:6px 12px;background-color:transparent;border:1px solid #d1d5db;border-radius:6px;cursor:pointer;transition:all .2s ease;color:#6b7280}.sort-toggle:hover{background-color:#f3f4f6;border-color:#9ca3af}.sort-toggle[data-state=on]{background-color:#1a73e8;border-color:#1a73e8;color:#fff}.sort-toggle[data-state=on]:hover{background-color:#1557b0;border-color:#1557b0}.sort-toggle-icon{width:16px;height:16px}.sort-direction-icon{width:14px;height:14px}.sort-tooltip-content{background-color:#000;color:#fff;padding:8px 12px;border-radius:4px;font-size:13px;line-height:1.4;box-shadow:0 2px 8px #00000026;z-index:1000;animation:fadeIn .2s ease-out}.sort-tooltip-arrow{fill:#000}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}:root{--primary: #2563eb;--primary-hover: #1d4ed8;--primary-bg: #eff6ff;--surface: #ffffff;--bg-app: #f5f8fc;--text-main: #0f172a;--text-secondary: #475569;--text-disabled: #94a3b8;--border: #e2e8f0;--success: #16a34a;--error: #dc2626;--warning: #d97706;--font-family: "Inter", "Segoe UI", "Roboto", -apple-system, sans-serif;--font-xs: 12px;--font-sm: 14px;--font-md: 16px;--font-lg: 18px;--font-xl: 24px;--font-2xl: 28px;--font-3xl: 36px;--radius-pill: 999px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 12px;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--shadow-1: 0 1px 2px rgba(15, 23, 42, .06), 0 3px 10px rgba(15, 23, 42, .03);--shadow-2: 0 8px 24px rgba(15, 23, 42, .08);--shadow-3: 0 14px 36px rgba(15, 23, 42, .12);--overlay-bg: rgba(0, 0, 0, .4);--bg-secondary: #eef2f7;--bg-hover: rgba(0, 0, 0, .04)}.login-container{display:flex;justify-content:center;align-items:center;height:100vh;background-color:var(--bg-app)}.login-card{background-color:var(--surface);padding:var(--space-xl);border-radius:var(--radius-md);box-shadow:var(--shadow-1);width:100%;max-width:400px}.login-title{font-family:var(--font-family);font-size:var(--font-xl);color:var(--text-main);margin-bottom:var(--space-lg);text-align:center}.login-footer{margin-top:var(--space-lg);text-align:center;font-size:var(--font-sm);color:var(--text-secondary)}.login-footer a{color:var(--primary);text-decoration:none}.login-footer a:hover{text-decoration:underline}.signup-container{display:flex;justify-content:center;align-items:center;height:100vh;background-color:var(--bg-app)}.signup-card{background-color:var(--surface);padding:var(--space-xl);border-radius:var(--radius-md);box-shadow:var(--shadow-1);width:100%;max-width:400px}.signup-title{font-family:var(--font-family);font-size:var(--font-xl);color:var(--text-main);margin-bottom:var(--space-lg);text-align:center}.form-group{margin-bottom:var(--space-md)}.form-group label{display:block;font-family:var(--font-family);font-size:var(--font-xs);color:var(--text-secondary);margin-bottom:var(--space-xs)}.form-group input{width:100%;padding:var(--space-sm);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-sm);box-sizing:border-box}.form-group input:focus{outline:none;border-color:var(--primary)}.btn-primary{width:100%;padding:var(--space-sm) var(--space-md);background-color:var(--primary);color:#fff;border:none;border-radius:var(--radius-pill);font-family:var(--font-family);font-size:var(--font-sm);cursor:pointer;transition:background-color .2s}.btn-primary:hover{background-color:var(--primary-hover)}.btn-primary:disabled{background-color:var(--text-disabled);cursor:not-allowed}.error-message{color:var(--error);font-size:var(--font-sm);margin-bottom:var(--space-md);min-height:20px;text-align:center}.signup-footer{margin-top:var(--space-lg);text-align:center;font-size:var(--font-sm);color:var(--text-secondary)}.signup-footer a{color:var(--primary);text-decoration:none}.signup-footer a:hover{text-decoration:underline}.hidden{display:none!important}.verification-text{font-family:var(--font-family);font-size:var(--font-sm);color:var(--text-secondary);text-align:center;margin-bottom:var(--space-lg)}.resend-container{margin-top:var(--space-md);text-align:center;font-size:var(--font-sm)}.btn-link{background:none;border:none;color:var(--primary);cursor:pointer;font-family:var(--font-family);font-size:var(--font-sm);padding:0}.btn-link:hover{text-decoration:underline}.btn-link:disabled{color:var(--text-disabled);cursor:default;text-decoration:none}.workspace-container{display:grid;grid-template-columns:280px 1fr;min-height:calc(100vh - 200px);background-color:var(--bg-app);font-family:var(--font-family)}.workspace-sidebar{background-color:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:var(--space-md);position:sticky;top:0;height:calc(100vh - 120px);overflow-y:auto;align-self:flex-start}.sidebar-header{display:flex;flex-direction:column;align-items:center;margin-bottom:var(--space-lg);gap:var(--space-sm);position:relative;z-index:101}.sidebar-header h2{font-size:var(--font-md);color:var(--text-main)}.workspace-mode-nav{display:flex;flex-direction:column;width:200px;gap:var(--space-xs)}.mode-btn{width:100%;padding:var(--space-xs) var(--space-sm);border:1px solid var(--border);border-radius:var(--radius-sm);background:transparent;color:var(--text-main);font-size:var(--font-md);font-family:var(--font-family);cursor:pointer;text-align:left;transition:background .15s,border-color .15s}.mode-btn:hover{background:var(--hover-bg, rgba(0,0,0,.05));border-color:var(--primary)}.mode-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.new-item-card{border:2px dashed var(--primary);background:transparent;opacity:.7;box-shadow:none;justify-content:center}.new-item-card:hover{opacity:1;border-color:var(--primary);background:#1a73e80a;transform:translateY(-2px);box-shadow:none}.new-item-card .item-icon{color:var(--text-secondary);font-size:32px;line-height:1}.workspace-search-row{width:200px;position:relative}#workspace-search-input{width:200px;padding:6px 28px 6px 10px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:var(--font-sm);font-family:var(--font-family);box-sizing:border-box}#workspace-search-input:focus{outline:none;border-color:var(--primary)}#workspace-search-clear{position:absolute;top:50%;right:6px;transform:translateY(-50%);width:18px;height:18px;border-radius:50%;border:none;background:#e0e0e0;color:#333;font-size:12px;line-height:1;cursor:pointer}#workspace-search-clear:hover{background:#d0d0d0}.form-error{margin-top:6px;font-size:12px;color:var(--error);min-height:14px}.workspace-main{display:flex;flex-direction:column;position:relative;min-height:100vh}.workspace-main:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:url(/assets/desktop/cat_mainpage.png?v=3) center center no-repeat;background-size:contain;z-index:1;pointer-events:none;opacity:1}.main-header{background-color:var(--surface);padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:var(--space-md);position:relative;z-index:100}.breadcrumb{display:flex;gap:var(--space-xs);font-size:var(--font-sm);color:var(--text-secondary);position:relative;z-index:101}.breadcrumb-item{cursor:pointer}.breadcrumb-item:hover{color:var(--primary);text-decoration:underline}.breadcrumb-item:after{content:"/";margin-left:var(--space-xs);color:var(--text-disabled)}.breadcrumb-item:last-child:after{content:""}.path-jump{flex:0 0 320px}.view-options{margin-left:auto;display:flex;align-items:center}#path-input{width:100%;padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:var(--font-sm);font-family:var(--font-family);position:relative;z-index:101}#path-input:focus{outline:none;border-color:var(--primary)}.path-input-shake{animation:path-shake .3s ease-in-out}@keyframes path-shake{0%{transform:translate(0)}25%{transform:translate(-4px)}50%{transform:translate(4px)}75%{transform:translate(-3px)}to{transform:translate(0)}}.items-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--space-lg);padding:var(--space-lg);position:relative;background-color:#ffffff0a}.grid-item{background-color:#ffffffb3;border-radius:var(--radius-md);padding:var(--space-md);display:flex;flex-direction:column;align-items:center;cursor:pointer;transition:transform .2s,box-shadow .2s;position:relative;z-index:10;box-shadow:0 1px 3px #00000014,0 1px 2px #0000000d}.grid-item.grid-item--preenter{opacity:0;transform:translateY(12px) scale(.99)}.grid-item.grid-item--enter{animation:workspace-card-enter .36s cubic-bezier(.22,.61,.36,1) both;animation-delay:var(--enter-delay, 0ms)}@keyframes workspace-card-enter{0%{opacity:0;transform:translateY(12px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}@media (prefers-reduced-motion: reduce){.grid-item{transition:none}.grid-item.grid-item--preenter,.grid-item.grid-item--enter{animation:none;opacity:1;transform:none}}.grid-item:hover{transform:translateY(-4px);box-shadow:0 4px 12px #00000026,0 2px 6px #0000001a}.grid-item.drag-over{box-shadow:0 0 0 3px #1a73e833,0 4px 12px #1a73e84d;transform:translateY(-2px)}.grid-item.shake{animation:item-shake .3s ease-in-out}@keyframes item-shake{0%{transform:translate(0)}25%{transform:translate(-4px)}50%{transform:translate(4px)}75%{transform:translate(-3px)}to{transform:translate(0)}}.item-icon{color:var(--primary);margin-bottom:var(--space-sm);position:relative;z-index:10}.item-info{text-align:center;width:100%}.item-title{display:block;font-size:var(--font-sm);font-weight:600;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;position:relative;z-index:10}.item-meta{font-size:var(--font-xs);color:var(--text-secondary);position:relative;z-index:10}.item-title-input{width:100%;padding:4px 6px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:var(--font-sm);font-family:var(--font-family)}@media (prefers-reduced-motion: reduce){.grid-item.grid-item--enter{animation:none!important;opacity:1!important;transform:none!important}}.item-error{display:block;min-height:14px;font-size:12px;color:var(--error);margin-top:4px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:1000}.modal-card{background-color:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-3);width:100%;max-width:450px;display:flex;flex-direction:column}.modal-header{padding:var(--space-md) var(--space-lg);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;cursor:move}.modal-header h3{margin:0;font-size:var(--font-lg)}.modal-close{background:none;border:none;font-size:24px;cursor:pointer;color:var(--text-secondary)}.modal-body{padding:var(--space-lg)}.modal-footer{padding:var(--space-md) var(--space-lg);border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:var(--space-md)}.btn-text{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:var(--space-sm) var(--space-md)}.btn-text:hover{color:var(--text-main)}.action-card,.move-card,.confirm-card{max-width:420px}.modal-title-group{display:flex;flex-direction:column;gap:4px}.modal-eyebrow{font-size:var(--font-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em}.modal-title{margin:0}.action-body{display:grid;gap:var(--space-md)}.action-btn{border:1px solid var(--border);background:var(--surface);padding:var(--space-md);border-radius:var(--radius-md);font-size:var(--font-sm);cursor:pointer;transition:border-color .2s,transform .2s,box-shadow .2s}.action-btn:hover{border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow-1)}.action-btn.danger{border-color:var(--danger, #e05d5d);color:var(--danger, #e05d5d)}.confirm-text{margin:0;color:var(--text-main);font-size:var(--font-sm)}.btn-danger{background:var(--danger, #e05d5d);color:#fff;border:none;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);cursor:pointer}#logout-button-container{margin-top:auto}.study-container{display:grid;--splitter-width: 8px;--study-left-width: 240px;--study-right-width: 320px;grid-template-columns:var(--study-left-width) var(--splitter-width) 1fr var(--splitter-width) var(--study-right-width);background-color:var(--bg-app);font-family:var(--font-family);margin-bottom:60px}.study-sidebar,.study-right-panel{background-color:var(--surface);display:flex;flex-direction:column;min-height:0;position:relative;z-index:3}.study-right-panel{border-left:none}.panel-splitter{width:var(--splitter-width);cursor:col-resize;background:linear-gradient(to right,transparent,rgba(0,0,0,.08),transparent);position:relative;z-index:2}.panel-splitter:hover:after{opacity:1}.panel-splitter:after{content:"";position:absolute;top:0;bottom:0;left:2px;right:2px;background:#00000014;opacity:0;transition:opacity .2s}.panel-header{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;position:relative;z-index:4}.panel-header-left{display:flex;align-items:center;gap:var(--space-sm)}.btn-back{font-size:var(--font-xs);padding:var(--space-xs) var(--space-sm)}.panel-header h3{font-size:var(--font-sm);margin:0}.panel-actions{display:flex;gap:var(--space-xs);position:relative;z-index:5}.chapter-list{flex:1;min-height:0}.chapter-empty{padding:var(--space-md);color:var(--text-secondary);font-size:var(--font-sm)}.chapter-item{padding:var(--space-sm) var(--space-md);cursor:pointer;display:flex;gap:var(--space-sm);font-size:var(--font-sm);border-bottom:1px solid var(--bg-app)}.chapter-item:hover{background-color:var(--primary-bg)}.chapter-item.active{background-color:var(--primary-bg);color:var(--primary);font-weight:600}.chapter-order{color:var(--text-secondary);min-width:20px}.study-center-panel{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-lg);background-color:var(--bg-app);min-height:0;gap:var(--space-lg)}.board-mount{width:100%;flex:1 1 auto;min-height:0;display:flex;align-items:center;justify-content:center;overflow:hidden}.board-mount>.chessboard{width:100%;height:100%;aspect-ratio:1 / 1;box-shadow:var(--shadow-2)}.board-mount>.chessboard-v2{width:66.6667%;height:auto;aspect-ratio:1 / 1;margin-left:auto;margin-right:auto;box-shadow:var(--shadow-2)}.board-mount .chessboard .square{aspect-ratio:1 / 1}.board-controls{margin-top:var(--space-lg);display:flex;gap:var(--space-md)}.panel-tabs{display:flex;border-bottom:1px solid var(--border)}.tab-btn{flex:1;padding:var(--space-sm);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:var(--font-xs);font-weight:600;color:var(--text-secondary)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.tab-content{display:none;flex:1;padding:var(--space-md);min-height:0}.tab-content.active{display:flex;flex-direction:column}.tab-content#tab-pgn{overflow:hidden}.analysis-module{margin-bottom:var(--space-md)}.move-tree{font-size:var(--font-sm);line-height:1.6;flex:1;min-height:0}.move-tree-row{display:grid;grid-template-columns:40px 1fr 1fr;align-items:center;gap:var(--space-xs);margin-bottom:var(--space-xs)}.move-tree-number{color:var(--text-secondary);font-variant-numeric:tabular-nums}.move-tree-move{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-panel);padding:var(--space-xxs) var(--space-xs);text-align:left;cursor:pointer}.move-tree-move:disabled{opacity:.4;cursor:default}.move-tree-move:not(:disabled):hover{background:var(--bg-app)}.pgn-comment{margin-top:var(--space-md);display:flex;flex-direction:column;gap:var(--space-sm);flex-shrink:0}.pgn-comment-tabs{display:flex;gap:var(--space-xs);align-items:center}.pgn-tab-btn{border:1px solid var(--border);border-radius:999px;background:var(--bg-panel);padding:4px 10px;font-size:var(--font-xs);cursor:pointer}.pgn-tab-btn.active{background:var(--text-primary);color:var(--bg-app)}.pgn-comment-panel{display:none;flex-direction:column;gap:var(--space-sm)}.pgn-comment-panel.active{display:flex}#pgn-comment-input{width:100%;min-height:70px;padding:var(--space-sm);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-sm);resize:vertical}#pgn-fen-display{width:100%;min-height:70px;padding:var(--space-sm);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:var(--font-sm);resize:vertical}.move-tree-empty,.board-empty,.discussion-empty{color:var(--text-secondary);font-size:var(--font-sm)}.btn-icon{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:var(--space-xs) var(--space-sm);cursor:pointer}.btn-icon:hover{background-color:var(--bg-app)}.discussion-container{display:flex;flex-direction:column;height:100%}.discussion-thread-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:var(--space-md);padding-bottom:var(--space-md)}.discussion-thread-item{border-bottom:1px solid var(--bg-app);padding-bottom:var(--space-sm)}.discussion-thread-header{display:flex;justify-content:space-between;font-size:var(--font-xs);margin-bottom:var(--space-xs)}.discussion-thread-author{font-weight:600;color:var(--text-main)}.discussion-thread-date{color:var(--text-secondary)}.discussion-thread-content{font-size:var(--font-sm);color:var(--text-main);line-height:1.4}.discussion-thread-actions{margin-top:var(--space-xs);display:flex;gap:var(--space-md)}.discussion-input-area{border-top:1px solid var(--border);padding-top:var(--space-md);display:flex;flex-direction:column;gap:var(--space-sm)}#discussion-input{width:100%;min-height:80px;padding:var(--space-sm);border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-sm);resize:vertical}.discussion-input-controls{display:flex;justify-content:flex-end}.btn-xs{padding:2px 4px;font-size:11px}.app-header{display:flex;justify-content:space-between;align-items:center;padding:0 24px;height:100px;background:#fffffff5;border-bottom:1px solid var(--border);font-family:var(--font-family);position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.header-left{display:flex;align-items:center;gap:18px;min-width:0}.header-left .logo{display:flex;align-items:center;text-decoration:none;color:var(--text-main);height:100%}.header-left .logo-image{height:100px;width:auto;display:block}.header-center{display:flex;align-items:center;gap:2px}.header-center .nav-link{font-size:16px;font-weight:600;color:var(--text-secondary);text-decoration:none;padding:8px 12px;border-radius:8px;transition:background-color .2s,color .2s}.header-center .nav-link:hover{background-color:var(--primary-bg);color:var(--primary)}.header-right .username{font-size:14px;font-weight:600;color:var(--text-main);text-decoration:none}.header-right .nav-link{font-size:14px;font-weight:600;color:var(--primary);text-decoration:none}.header-right{display:flex;align-items:center;gap:10px}.bell-wrapper{position:relative;display:flex;align-items:center}.bell-btn{position:relative;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #d8dee7;background:#f8fafc;border-radius:10px;cursor:pointer;color:var(--text-secondary);box-shadow:0 1px 2px #0f172a0d;transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s,transform .15s}.bell-btn:hover{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8;box-shadow:0 2px 6px #2563eb29;transform:translateY(-1px)}.bell-btn:focus-visible{outline:none;box-shadow:0 0 0 3px #2563eb33}.bell-badge{position:absolute;top:2px;right:2px;min-width:16px;height:16px;padding:0 4px;border-radius:8px;background:#ef4444;color:#fff;font-size:10px;font-weight:700;line-height:16px;text-align:center;pointer-events:none}.bell-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:300px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-2);z-index:1100;overflow:hidden}.bell-dropdown-header{padding:12px 16px 8px;font-size:12px;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid #f1f5f9}.bell-empty{padding:20px 16px;font-size:14px;color:#94a3b8;text-align:center}.bell-item{display:flex;flex-direction:column;align-items:flex-start;width:100%;padding:10px 16px;border:none;background:transparent;cursor:pointer;text-align:left;transition:background .12s;border-bottom:1px solid #f1f5f9;gap:2px}.bell-item:hover{background:#eff6ff}.bell-item-sender{font-size:13px;font-weight:600;color:var(--text-main)}.bell-item-content{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:268px}.bell-open-chat{display:block;width:100%;padding:10px 16px;border:none;background:transparent;cursor:pointer;font-size:13px;font-weight:600;color:var(--primary);text-align:center;transition:background .12s}.bell-open-chat:hover{background:#eff6ff}.bell-item--broadcast{background:#fffbeb;border-left:3px solid #f59e0b}.bell-item--broadcast:hover{background:#fef3c7}.bell-item-broadcast-label{display:flex;align-items:center;gap:4px;font-size:10px;font-weight:700;color:#b45309;text-transform:uppercase;letter-spacing:.04em;margin-bottom:1px}.bell-item--seen{opacity:.45}.challenge-wrapper{position:relative;display:flex;align-items:center}.challenge-btn{position:relative;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #d8dee7;background:#f8fafc;border-radius:10px;cursor:pointer;color:var(--text-secondary);box-shadow:0 1px 2px #0f172a0d;transition:background-color .15s,border-color .15s,color .15s,box-shadow .15s,transform .15s}.challenge-btn:hover{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8;box-shadow:0 2px 6px #2563eb29;transform:translateY(-1px)}.challenge-btn:focus-visible{outline:none;box-shadow:0 0 0 3px #2563eb33}.header-action-icon{display:block}.challenge-indicator{position:absolute;top:4px;right:4px;width:8px;height:8px;border-radius:999px;background:#ef4444;border:2px solid #f8fafc;pointer-events:none}.challenge-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:260px;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-2);z-index:1100;overflow:hidden}.challenge-dropdown-header{padding:10px 16px 8px;font-size:11px;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid #f1f5f9}.challenge-info{padding:10px 16px;border-bottom:1px solid #f1f5f9}.challenge-opponent{font-size:14px;color:var(--text-main);margin-bottom:4px}.challenge-meta{font-size:12px;color:#64748b;display:flex;align-items:center;gap:6px}.challenge-status-badge{padding:1px 6px;border-radius:4px;font-weight:600;font-size:11px}.challenge-status-badge--ongoing{background:#dcfce7;color:#16a34a}.challenge-status-badge--waiting{background:#fee2e2;color:#dc2626}.challenge-actions{padding:8px 12px;display:flex;gap:8px}.challenge-go-btn{flex:1;padding:7px 10px;font-size:13px;font-weight:600;color:#fff;background:var(--primary);border:none;border-radius:7px;cursor:pointer;transition:background .15s}.challenge-go-btn:hover{background:#1a55e3}.challenge-decline-btn{padding:7px 10px;font-size:13px;font-weight:600;color:#ef4444;background:#fee2e2;border:none;border-radius:7px;cursor:pointer;transition:background .15s}.challenge-decline-btn:hover{background:#fecaca}.nav-dropdown{position:relative;display:flex;align-items:center}.nav-link--dropdown{cursor:pointer;-webkit-user-select:none;user-select:none;display:flex;align-items:center;gap:4px}.nav-link--dropdown:after{content:"▾";font-size:12px;opacity:.55}.nav-dropdown-menu{display:none;position:absolute;top:100%;left:50%;transform:translate(-50%);background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-2);min-width:170px;z-index:1100;padding:6px 0;white-space:nowrap}.nav-dropdown:hover .nav-dropdown-menu{display:block}.nav-dropdown-item{display:block;padding:10px 16px;font-size:14px;font-weight:500;color:var(--text-main);text-decoration:none;transition:background .12s,color .12s}.nav-dropdown-item:hover{background:#eff6ff;color:var(--primary)}@media (max-width: 1080px){.app-header{padding:0 14px}.header-center{gap:0}.header-center .nav-link{padding:7px 10px;font-size:14px}}@media (max-width: 860px){.app-header{height:80px}.header-left{gap:10px}.header-left .logo-image{height:72px}.header-center .nav-link{padding:6px 8px;font-size:13px}}body{background:var(--bg-app);margin:0}main{background:transparent}.app-footer{width:100%;background:#f8fafc;border-top:1px solid var(--border);color:var(--text-main);padding:32px 24px 20px;margin-top:auto}.app-footer:before{display:none}.footer-content{display:grid;grid-template-columns:1.2fr 1fr;gap:28px;max-width:1200px;margin:0 auto 18px}.footer-main{display:flex;align-items:center}.footer-brand{display:flex;align-items:center;gap:12px}.brand-icon{font-size:30px;color:var(--primary);text-shadow:none;animation:none}.brand-text{display:flex;flex-direction:column;gap:2px}.brand-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#64748b;font-weight:600;margin:0}.brand-names{font-size:20px;font-weight:700;margin:0;color:var(--text-main);background:none;-webkit-text-fill-color:unset}.footer-contact{display:flex;flex-direction:column;gap:10px}.footer-heading{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:#64748b;margin:0 0 4px;font-weight:700}.contact-item{display:flex;align-items:center;gap:8px;font-size:13px;line-height:1.5}.contact-icon{width:16px;height:16px;color:var(--primary);opacity:1}.contact-label,.contact-text,.footer-copyright{color:var(--text-secondary)}.contact-link{color:var(--text-main);text-decoration:none;transition:color .2s;position:static}.contact-link:after{display:none}.contact-link:hover{color:var(--primary)}.footer-bottom{max-width:1200px;margin:0 auto;padding-top:10px}.footer-divider{height:1px;background:var(--border);margin-bottom:10px}.footer-links{display:flex;justify-content:center;gap:14px;margin-bottom:8px}.footer-link{font-size:13px;color:var(--text-secondary);text-decoration:none;transition:color .2s}.footer-link:after{display:none}.footer-link:hover{color:var(--primary)}.footer-copyright{text-align:center;font-size:12px;margin:0}@media (max-width: 1024px){.footer-content{grid-template-columns:1fr;gap:20px}}@media (max-width: 680px){.app-footer{padding:24px 14px 16px}.brand-names{font-size:17px}}.test-sign-banner{position:relative;background:linear-gradient(135deg,#e3f2fd,#bbdefb);border-left:4px solid #1976d2;border-radius:8px;padding:12px 48px 12px 16px;margin:0 var(--space-lg);margin-bottom:var(--space-md);box-shadow:0 2px 8px #1976d226;animation:slideDown .4s ease-out;z-index:50}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.test-sign-content{display:flex;align-items:center;gap:12px}.test-sign-icon{font-size:24px;flex-shrink:0;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.test-sign-text{flex:1;font-size:16px;line-height:1.6;color:#0d47a1;font-family:var(--font-family)}.test-sign-text strong{font-weight:600;color:#01579b}.test-sign-link{color:#1976d2;text-decoration:none;font-weight:500;transition:all .2s ease;border-bottom:1px solid transparent}.test-sign-link:hover{color:#0d47a1;border-bottom-color:#0d47a1}.test-sign-wechat{font-family:Courier New,monospace;background-color:#1976d21a;padding:2px 6px;border-radius:4px;font-weight:500;color:#01579b;font-size:16px;cursor:pointer;transition:all .2s ease;-webkit-user-select:none;user-select:none}.test-sign-wechat:hover{background-color:#1976d233;transform:scale(1.05)}.test-sign-wechat:active{transform:scale(.98)}.test-sign-close{position:absolute;top:8px;right:8px;background:none;border:none;font-size:24px;line-height:1;cursor:pointer;color:#1976d2;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .2s ease;padding:0}.test-sign-close:hover{background-color:#1976d226;color:#0d47a1;transform:rotate(90deg)}.test-sign-close:active{transform:rotate(90deg) scale(.9)}.test-sign-toast{position:fixed;top:20px;left:50%;transform:translate(-50%);background-color:#2e2e2e;color:#fff;padding:12px 20px;border-radius:8px;box-shadow:0 4px 12px #0000004d;display:flex;align-items:center;gap:8px;font-size:15px;font-family:var(--font-family);z-index:10000;animation:toastSlideIn .3s ease-out}.test-sign-toast.fade-out{animation:toastFadeOut .3s ease-out forwards}@keyframes toastSlideIn{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toastFadeOut{0%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(-20px)}}.test-sign-toast-icon{color:#4caf50;font-size:18px;font-weight:700}.home-page,.home-page *{font-family:var(--font-family)}.home-page{display:flex;justify-content:center;padding:0 2rem 4rem;background:var(--bg-app)}.home-container{max-width:960px;width:100%}.welcome-section{display:flex;flex-direction:column;align-items:center;padding-top:3rem;margin-bottom:2.5rem;animation:fadeInDown .6s ease-out}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}.welcome-brand{display:flex;align-items:center;gap:1.25rem;margin-bottom:.8rem}.welcome-logo{height:80px;width:auto;flex-shrink:0;filter:drop-shadow(0 4px 12px rgba(0,0,0,.12));animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-7px)}}.welcome-title{font-family:var(--font-family);font-size:3.25rem;font-weight:700;color:var(--text-main);margin:0;letter-spacing:-.5px;white-space:nowrap}.welcome-taglines{display:flex;gap:1.5rem;justify-content:center}.tagline-amateurs,.tagline-coaches{margin:0;font-size:.95rem;font-weight:500;text-decoration:none;transition:opacity .2s}.tagline-amateurs{color:#2563eb}.tagline-coaches{color:#0369a1}.tagline-amateurs:hover,.tagline-coaches:hover{opacity:.7;text-decoration:underline}.hp-grid{display:flex;flex-direction:column;gap:1.25rem;animation:fadeInUp .6s ease-out .1s both}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.hp-row{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}.hp-section{background:var(--surface);border-radius:18px;padding:1.5rem 1.75rem 1.75rem;box-shadow:var(--shadow-1);border:1px solid var(--border)}.hp-section-label{font-size:.7rem;font-weight:700;color:#64748b;text-transform:uppercase;letter-spacing:1.2px;margin:0 0 1.1rem}.hp-cards{display:flex;gap:1rem;flex-wrap:wrap}.hp-card-link{flex:1;min-width:100px;text-decoration:none;display:block}.hp-card{position:relative;flex:1;min-width:100px;background:#f8fbff;border:1.5px solid #dbe7fb;border-radius:14px;padding:1.25rem 1rem 1rem;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:.6rem;cursor:pointer;transition:border-color .18s,box-shadow .18s,transform .18s}.hp-card:hover:not(.hp-card--disabled){border-color:var(--primary);box-shadow:0 4px 18px #2563eb21;transform:translateY(-2px)}.hp-card-icon{color:var(--primary);line-height:0}.hp-card--disabled .hp-card-icon{color:#c4c7d0}.hp-card-label{font-family:var(--font-family);font-size:.82rem;font-weight:700;color:var(--text-main);letter-spacing:.8px}.hp-card--disabled .hp-card-label{color:#b0b4c0}.hp-card--disabled{cursor:default;opacity:.6}.hp-coming-badge{position:absolute;top:.6rem;right:.6rem;font-size:.58rem;font-weight:700;color:#aaa;text-transform:uppercase;letter-spacing:.5px;background:#f0f0f0;border-radius:4px;padding:.15rem .4rem}.hp-tooltip{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%);background:#111;color:#fff;font-size:.75rem;font-weight:400;line-height:1.5;padding:.55rem .85rem;border-radius:8px;white-space:nowrap;pointer-events:none;z-index:100;box-shadow:0 4px 16px #00000040;animation:tooltipIn .12s ease-out}.hp-tooltip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:5px solid transparent;border-top-color:#111}@keyframes tooltipIn{0%{opacity:0;transform:translate(-50%) translateY(4px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media (max-width: 680px){.hp-row{grid-template-columns:1fr}.welcome-title{font-size:2rem;white-space:normal}.welcome-logo{height:60px}.welcome-section{padding-top:2rem}.welcome-taglines{flex-direction:column;align-items:center;gap:.4rem}.home-page{padding:0 1rem 3rem}}.terminal-window{display:flex;flex-direction:column;border-radius:4px;overflow:hidden;box-shadow:0 8px 32px #0006,0 2px 8px #0000004d;-webkit-user-select:none;user-select:none}.terminal-window.dos-style{border:2px solid #808080;background:silver}.terminal-window.unix-style{border:1px solid #3a3a3a;background:#2d2d2d}.terminal-window-titlebar{display:flex;align-items:center;justify-content:space-between;padding:2px 4px;cursor:move}.dos-style .terminal-window-titlebar{background:linear-gradient(to right,navy,#1084d0);color:#fff;font-family:"MS Sans Serif",Segoe UI,sans-serif;font-size:12px;font-weight:700;padding:2px 4px}.unix-style .terminal-window-titlebar{background:#3a3a3a;color:#e0e0e0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:13px;padding:6px 12px}.terminal-window-title{flex:1}.terminal-window-controls{display:flex;gap:4px}.terminal-window-btn{border:none;cursor:pointer;font-size:12px;display:flex;align-items:center;justify-content:center}.dos-style .terminal-window-btn{width:16px;height:14px;background:silver;border:1px outset #c0c0c0;font-family:Marlett,sans-serif;font-size:10px;padding:0}.dos-style .terminal-window-btn:active{border-style:inset}.unix-style .terminal-window-btn{width:12px;height:12px;border-radius:50%;font-size:0;padding:0}.unix-style .terminal-window-btn.close{background:#ff5f57}.unix-style .terminal-window-btn.minimize{background:#ffbd2e}.unix-style .terminal-window-btn.maximize{background:#28ca41}.unix-style .terminal-window-btn:hover:after{font-size:10px;color:#0009}.unix-style .terminal-window-btn.close:hover:after{content:"×"}.unix-style .terminal-window-btn.minimize:hover:after{content:"−"}.unix-style .terminal-window-btn.maximize:hover:after{content:"+"}.terminal-window-toolbar{display:flex;align-items:center;gap:16px;padding:6px 8px;background:#e0e0e0;border-bottom:1px solid #888;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:12px}.system-picker{display:flex;align-items:center;gap:6px}.system-picker-label{color:#333}.system-picker-select{padding:2px 6px;border:1px solid #888;border-radius:3px;background:#fff;font-size:12px}.terminal-effects-toggle{display:flex;gap:12px}.terminal-effects-toggle label{display:flex;align-items:center;gap:4px;color:#333;cursor:pointer}.terminal-effects-toggle input[type=checkbox]{cursor:pointer}.terminal-window-content{flex:1;min-height:0;overflow:hidden}.terminal{width:100%;height:100%;padding:8px 12px;box-sizing:border-box;position:relative;overflow:hidden;font-size:16px;line-height:1.3}.terminal-scroll{height:100%;overflow-y:auto;overflow-x:hidden;position:relative;z-index:1}.terminal-scroll::-webkit-scrollbar{width:12px}.terminal-scroll::-webkit-scrollbar-track{background:#0000004d}.terminal-scroll::-webkit-scrollbar-thumb{background:#fff3;border-radius:6px}.terminal-scroll::-webkit-scrollbar-thumb:hover{background:#ffffff4d}.terminal-line{white-space:pre-wrap;word-break:break-all;min-height:1.3em}.terminal-prompt{-webkit-user-select:none;user-select:none}.terminal-input-line{display:flex;align-items:center;white-space:pre}.terminal-input-text{white-space:pre}.terminal-cursor{display:inline-block;width:.6em;height:1.1em;opacity:0;vertical-align:text-bottom;animation:none}.terminal-cursor.visible{opacity:1}.terminal-hidden-input{position:absolute;left:-9999px;opacity:0;width:1px;height:1px}.terminal-scanlines{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none;background:repeating-linear-gradient(0deg,rgba(0,0,0,.15) 0px,rgba(0,0,0,.15) 1px,transparent 1px,transparent 2px);z-index:10}.terminal-crt-glow{position:absolute;top:0;left:0;right:0;bottom:0;pointer-events:none;box-shadow:inset 0 0 60px #00ff001a;z-index:9}@keyframes flicker{0%{opacity:.97}50%{opacity:1}to{opacity:.98}}.terminal{animation:flicker .15s infinite}.resize-handle{position:absolute;z-index:100}.resize-handle.n{top:0;left:10px;right:10px;height:4px;cursor:ns-resize}.resize-handle.s{bottom:0;left:10px;right:10px;height:4px;cursor:ns-resize}.resize-handle.e{top:10px;right:0;bottom:10px;width:4px;cursor:ew-resize}.resize-handle.w{top:10px;left:0;bottom:10px;width:4px;cursor:ew-resize}.resize-handle.ne{top:0;right:0;width:10px;height:10px;cursor:nesw-resize}.resize-handle.nw{top:0;left:0;width:10px;height:10px;cursor:nwse-resize}.resize-handle.se{bottom:0;right:0;width:10px;height:10px;cursor:nwse-resize}.resize-handle.sw{bottom:0;left:0;width:10px;height:10px;cursor:nesw-resize}.terminal-window-minimized{position:fixed;bottom:10px;left:10px;padding:6px 12px;background:silver;border:2px outset #c0c0c0;font-family:"MS Sans Serif",Segoe UI,sans-serif;font-size:12px;cursor:pointer;display:flex;align-items:center;gap:6px;z-index:999}.terminal-window-minimized:hover{background:#d0d0d0}.terminal-window-minimized-icon{font-weight:700}.terminal-launcher{position:fixed;bottom:20px;right:20px;z-index:9999;width:48px;height:48px;border-radius:8px;border:none;cursor:pointer;background:#1a1a1a;box-shadow:0 2px 8px #0000004d,inset 0 1px #ffffff1a;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.terminal-launcher:hover,.terminal-launcher.is-hovered{background:#2a2a2a;transform:scale(1.05);box-shadow:0 4px 16px #0006,0 0 20px #00ff0026,inset 0 1px #ffffff1a}.terminal-launcher:active{transform:scale(.95)}.terminal-launcher-icon{font-family:VT323,Courier New,monospace;font-size:22px;color:#0f0;text-shadow:0 0 8px rgba(0,255,0,.6);-webkit-user-select:none;user-select:none}.terminal-launcher:hover .terminal-launcher-icon{text-shadow:0 0 12px rgba(0,255,0,.8)}@keyframes terminal-pulse{0%,to{box-shadow:0 2px 8px #0000004d,inset 0 1px #ffffff1a}50%{box-shadow:0 2px 8px #0000004d,0 0 12px #00ff001a,inset 0 1px #ffffff1a}}.terminal-launcher{animation:terminal-pulse 3s ease-in-out infinite}.terminal-launcher:hover{animation:none}.cat-pet-container{display:inline-block;transition:opacity .2s ease}.cat-pet-container:hover{opacity:.95}.cat-pet-container.dragging{opacity:.8;transition:none}.cat-sprite{display:block;pointer-events:none;will-change:background-position}.cat-sprite{-ms-interpolation-mode:nearest-neighbor;image-rendering:-moz-crisp-edges;image-rendering:-webkit-optimize-contrast;image-rendering:pixelated;image-rendering:crisp-edges}.ug-page{min-height:calc(100vh - 100px);background:var(--bg-app);display:flex;flex-direction:column;animation:ug-page-in .45s ease-out both}@keyframes ug-page-in{0%{opacity:0}to{opacity:1}}.ug-guest-banner{background:#fffbeb;border-bottom:1px solid #fde68a;padding:10px 24px;font-size:13px;color:#92400e;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.ug-guest-banner__link{color:#1a73e8;font-weight:600;text-decoration:none}.ug-guest-banner__link:hover{text-decoration:underline}.ug-play-page{padding:0}.ug-play-lobby-centered{flex:1;display:flex;align-items:center;justify-content:center;padding:48px 24px 80px}.ug-play-lobby-centered .ug-lobby{width:100%;max-width:440px;background:#fff;border:1px solid #e8e8e4;border-radius:16px;padding:36px;box-shadow:0 4px 24px #0000000f}.ug-lobby{padding:0}.ug-lobby__title{font-size:22px;font-weight:800;color:#1a1a2e;margin:0 0 20px}.ug-lobby__tabs{display:flex;gap:0;border:1.5px solid #e0e0dc;border-radius:10px;overflow:hidden;margin-bottom:24px}.ug-lobby__tab{flex:1;padding:9px 16px;font-size:13px;font-family:inherit;font-weight:600;border:none;background:none;color:#888;cursor:pointer;transition:background .15s,color .15s;position:relative}.ug-lobby__tab+.ug-lobby__tab{border-left:1.5px solid #e0e0dc}.ug-lobby__tab:hover:not(.ug-lobby__tab--active){background:#f8f8f4;color:#444}.ug-lobby__tab--active{background:#f0f1ff;color:#4338ca}.ug-lobby__open-hint{font-size:13px;color:#666;line-height:1.55;margin:0 0 4px}.ug-lobby__form{display:flex;flex-direction:column;gap:20px}.ug-lobby__field{display:flex;flex-direction:column;gap:8px}.ug-lobby__label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#888}.ug-lobby__input{width:100%;box-sizing:border-box;padding:10px 14px;font-size:15px;font-family:inherit;border:1.5px solid #e0e0dc;border-radius:10px;background:#fff;color:#1a1a2e;outline:none;transition:border-color .15s,box-shadow .15s}.ug-lobby__input:focus{border-color:#818cf8;box-shadow:0 0 0 3px #818cf81f}.ug-lobby__tc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.ug-lobby__tc-btn{padding:8px 6px;font-family:inherit;border:1.5px solid #e0e0dc;border-radius:8px;background:#fff;color:#555;cursor:pointer;transition:border-color .15s,background .15s,color .15s;display:flex;flex-direction:column;align-items:center;gap:2px}.ug-lobby__tc-time{font-size:13px;font-weight:700;color:inherit}.ug-lobby__tc-cat{font-size:10px;font-weight:500;color:#aaa;text-transform:uppercase;letter-spacing:.04em}.ug-lobby__tc-btn:hover{border-color:#818cf8;color:#1a1a2e}.ug-lobby__tc-btn--active{border-color:#818cf8;background:#f0f1ff;color:#4338ca}.ug-lobby__tc-btn--active .ug-lobby__tc-cat{color:#818cf8}.ug-lobby__color-row{display:flex;gap:10px}.ug-lobby__color-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 8px;font-family:inherit;font-weight:500;border:1.5px solid #e0e0dc;border-radius:10px;background:#fff;color:#555;cursor:pointer;transition:border-color .15s,background .15s}.ug-lobby__color-icon{font-size:22px;line-height:1}.ug-lobby__color-btn>span:last-child{font-size:11px;text-transform:capitalize}.ug-lobby__color-btn:hover{border-color:#818cf8}.ug-lobby__color-btn--active{border-color:#818cf8;background:#f0f1ff;color:#4338ca}.ug-lobby__open-spinner-wrap{display:flex;flex-direction:column;align-items:center;gap:14px;padding:24px 0;color:#888;font-size:14px}.ug-lobby__spinner{width:28px;height:28px;border:3px solid #e0e0dc;border-top-color:#4338ca;border-radius:50%;animation:ug-spin .75s linear infinite;flex-shrink:0}.ug-lobby__spinner--sm{width:16px;height:16px;border-width:2px}@keyframes ug-spin{to{transform:rotate(360deg)}}.ug-lobby__open-waiting{display:flex;flex-direction:column;gap:14px}.ug-lobby__open-waiting__label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#888;margin:0}.ug-lobby__link-row{display:flex;gap:8px;align-items:stretch}.ug-lobby__link-input{flex:1;min-width:0;padding:10px 12px;font-size:13px;font-family:inherit;border:1.5px solid #e0e0dc;border-radius:10px;background:#f8f8f4;color:#444;outline:none;cursor:text;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ug-lobby__link-copy{padding:0 18px;font-size:13px;font-family:inherit;font-weight:600;border:1.5px solid #818cf8;border-radius:10px;background:#fff;color:#4338ca;cursor:pointer;white-space:nowrap;transition:background .15s,color .15s;flex-shrink:0}.ug-lobby__link-copy:hover{background:#f0f1ff}.ug-lobby__link-copy--copied{background:#f0fdf4;border-color:#86efac;color:#16a34a}.ug-lobby__open-status{display:flex;align-items:center;gap:10px;font-size:13px;color:#555}.ug-lobby__open-countdown{font-size:12px;color:#888}.ug-lobby__open-countdown strong{font-variant-numeric:tabular-nums}.ug-lobby__open-countdown--urgent{color:#ea580c}.ug-lobby__cancel{padding:9px;font-size:13px;font-family:inherit;font-weight:600;border:1.5px solid #e0e0dc;border-radius:10px;background:none;color:#888;cursor:pointer;transition:border-color .15s,color .15s}.ug-lobby__cancel:hover{border-color:#aaa;color:#444}.ug-lobby__open-expired{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px 0;text-align:center}.ug-lobby__open-expired__icon{font-size:32px;opacity:.5}.ug-lobby__open-expired p{font-size:14px;color:#666;margin:0}.ug-lobby__error{font-size:13px;color:#dc2626;background:#fef2f2;border-radius:8px;padding:10px 14px;display:flex;flex-direction:column;gap:8px}.ug-lobby__goto-game{background:none;border:none;padding:0;font-size:13px;font-weight:600;color:#2e6bff;cursor:pointer;text-align:left;text-decoration:underline}.ug-lobby__submit{padding:12px;font-size:15px;font-family:inherit;font-weight:700;color:#fff;background:#4338ca;border:none;border-radius:10px;cursor:pointer;transition:background .15s,box-shadow .15s,opacity .15s}.ug-lobby__submit:hover:not(:disabled){background:#3730a3;box-shadow:0 2px 10px #4338ca4d}.ug-lobby__submit:disabled{opacity:.5;cursor:not-allowed}.ug-hist-list{display:flex;flex-direction:column;gap:8px}.ug-hist-card{display:grid;grid-template-columns:4px 1fr auto auto;align-items:center;gap:14px;background:#fff;border-radius:10px;border:1px solid #e8e8e4;padding:12px 16px 12px 0;cursor:pointer;transition:box-shadow .15s,transform .12s;animation:ug-card-in .35s ease-out both}@keyframes ug-card-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.ug-hist-card:hover{box-shadow:0 4px 16px #00000014;transform:translateY(-1px)}.ug-hist-card__accent{width:4px;border-radius:4px 0 0 4px;align-self:stretch}.ug-hist-card--win .ug-hist-card__accent{background:#22c55e}.ug-hist-card--loss .ug-hist-card__accent{background:#ef4444}.ug-hist-card--draw .ug-hist-card__accent{background:#94a3b8}.ug-hist-card__players{display:flex;flex-direction:column;gap:3px;min-width:0}.ug-hist-card__player{display:flex;align-items:center;gap:6px;font-size:13px;color:#1a1a2e}.ug-hist-card__piece{font-size:15px}.ug-hist-card__piece--white{filter:drop-shadow(0 1px 1px rgba(0,0,0,.2))}.ug-hist-card__piece--black{filter:drop-shadow(0 1px 1px rgba(0,0,0,.15))}.ug-hist-card__name{font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ug-hist-card__result{font-size:13px;font-weight:700;min-width:36px;text-align:center}.ug-hist-card--win .ug-hist-card__result{color:#16a34a}.ug-hist-card--loss .ug-hist-card__result{color:#dc2626}.ug-hist-card--draw .ug-hist-card__result{color:#64748b}.ug-hist-card__meta{display:flex;flex-direction:column;align-items:flex-end;gap:2px;font-size:11px;color:#888;white-space:nowrap}.ug-hist-card__tc{font-weight:600;color:#555}.ug-hist-empty{display:flex;flex-direction:column;align-items:center;padding:60px 0;gap:12px}.ug-hist-empty__icon{font-size:36px;opacity:.3}.ug-hist-empty__text{font-size:14px;color:#888;margin:0}.ug-hist-loading{display:flex;justify-content:center;padding:20px 0}.ug-hist-error{font-size:13px;color:#dc2626;padding:12px;text-align:center}.ug-game-page{display:flex;flex-direction:column;padding:0}.ug-waiting-banner{background:#f0f9ff;border-bottom:1px solid #bae6fd;padding:10px 24px;font-size:13px;color:#0369a1;text-align:center}.ug-page--loading,.ug-page--error{align-items:center;justify-content:center}.ug-connecting{display:flex;flex-direction:column;align-items:center;gap:16px;color:#888;font-size:14px}.ug-error-card{text-align:center;color:#888;font-size:14px;display:flex;flex-direction:column;align-items:center;gap:16px}.ug-error-card__btn{padding:8px 20px;font-size:13px;font-family:inherit;font-weight:600;border:1.5px solid #888;border-radius:8px;background:none;cursor:pointer;color:#555;transition:border-color .15s}.ug-error-card__btn:hover{border-color:#4338ca;color:#4338ca}.ug-game-layout{display:flex;gap:0;flex:1;max-width:1060px;margin:0 auto;width:100%;padding:24px;box-sizing:border-box;align-items:flex-start}.ug-game-board-col{display:flex;flex-direction:column;gap:8px;flex-shrink:0;width:clamp(320px,55vw,580px)}.ug-board-container{position:relative;display:flex;align-items:flex-start}.ug-board-wrapper{position:relative;display:inline-block}.ug-board-flip-btn{position:absolute;bottom:8px;right:8px;padding:4px 10px;font-size:12px;font-family:inherit;font-weight:500;border:1px solid rgba(255,255,255,.3);border-radius:6px;background:#00000059;color:#ffffffd9;cursor:pointer;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);transition:background .15s;z-index:5}.ug-board-flip-btn:hover{background:#0000008c}.ug-game-side-col{flex:1;min-width:0;padding-left:20px;display:flex;flex-direction:column}.ug-game-side-panel{background:#fff;border:1px solid #e8e8e4;border-radius:12px;display:flex;flex-direction:column;height:100%;min-height:400px;overflow:hidden}.ug-game-moves-wrap{flex:1;overflow:hidden;display:flex;flex-direction:column}.ug-player-bar{display:flex;align-items:center;gap:10px;padding:8px 4px;border-radius:8px;transition:background .15s}.ug-player-bar--active{background:#4338ca0d}.ug-player-bar__avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#0f172a;flex-shrink:0}.ug-player-bar__info{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.ug-player-bar__name{font-size:14px;font-weight:600;color:#1a1a2e;display:flex;align-items:center;gap:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ug-player-bar__you-tag{font-size:10px;font-weight:600;letter-spacing:.05em;color:#818cf8;background:#eef2ff;border-radius:4px;padding:1px 5px;text-transform:uppercase}.ug-player-bar__disconnected{font-size:11px;color:#f59e0b}.ug-player-bar__piece-dot{width:12px;height:12px;border-radius:50%;border:1.5px solid #d0d0cc;flex-shrink:0}.ug-player-bar__piece-dot--white{background:#f8f8f4}.ug-player-bar__piece-dot--black{background:#2d2d2d;border-color:#2d2d2d}.ug-clock{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:#555;min-width:72px;text-align:right;transition:color .2s;flex-shrink:0}.ug-clock--active{color:#1a1a2e}.ug-clock--low{color:#ea580c}.ug-clock--danger{color:#dc2626;animation:ug-clock-pulse .5s ease-in-out infinite alternate}@keyframes ug-clock-pulse{0%{opacity:1}to{opacity:.65}}.ug-clock--over{color:#94a3b8;animation:none}.ug-draw-banner{display:flex;align-items:center;justify-content:center;gap:16px;padding:10px 24px;background:#f0fdf4;border-bottom:1px solid #bbf7d0;animation:ug-slide-down .2s ease-out}@keyframes ug-slide-down{0%{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}.ug-draw-banner__text{font-size:14px;font-weight:500;color:#166534}.ug-draw-banner__text--waiting{color:#64748b;font-style:italic}.ug-draw-banner__actions{display:flex;gap:8px}.ug-draw-banner__btn{padding:6px 16px;font-size:13px;font-family:inherit;font-weight:600;border-radius:7px;cursor:pointer;transition:background .15s}.ug-draw-banner__btn--accept{background:#16a34a;color:#fff;border:none}.ug-draw-banner__btn--accept:hover{background:#15803d}.ug-draw-banner__btn--decline{background:none;color:#dc2626;border:1.5px solid #fca5a5}.ug-draw-banner__btn--decline:hover{background:#fef2f2}.ug-result-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:20;animation:ug-result-in .3s ease-out;border-radius:inherit}@keyframes ug-result-in{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}.ug-result-card{background:#fff;border-radius:16px;padding:32px 40px;text-align:center;display:flex;flex-direction:column;gap:10px;box-shadow:0 20px 60px #00000059;min-width:220px}.ug-result__headline{font-size:34px;font-weight:900;letter-spacing:-.02em;line-height:1}.ug-result__headline--win{color:#16a34a}.ug-result__headline--lose{color:#dc2626}.ug-result__headline--draw{color:#64748b}.ug-result__reason{font-size:14px;color:#888}.ug-result__actions{display:flex;gap:10px;margin-top:10px;justify-content:center}.ug-result__btn{padding:10px 22px;font-size:14px;font-family:inherit;font-weight:700;border-radius:9px;cursor:pointer;transition:background .15s,box-shadow .15s}.ug-result__btn--primary{background:#4338ca;color:#fff;border:none}.ug-result__btn--primary:hover{background:#3730a3;box-shadow:0 2px 10px #4338ca4d}.ug-result__btn--secondary{background:none;color:#555;border:1.5px solid #e0e0dc}.ug-result__btn--secondary:hover{background:var(--bg-app);border-color:#aaa}.ug-movelist{flex:1;overflow-y:auto;padding:12px 8px;font-size:13px;display:flex;flex-direction:column}.ug-movelist--empty{align-items:center;justify-content:center;color:#aaa;font-style:italic;padding:32px}.ug-movelist__table{border-collapse:collapse;width:100%}.ug-movelist__row:hover{background:#f8f8f4}.ug-movelist__num{padding:3px 6px 3px 8px;color:#aaa;font-size:12px;width:28px;-webkit-user-select:none;user-select:none}.ug-movelist__move{padding:3px 8px;border-radius:5px;cursor:pointer;font-weight:500;color:#333;width:48%;transition:background .1s}.ug-movelist__move:hover{background:#eef2ff;color:#4338ca}.ug-movelist__move--active{background:#4338ca!important;color:#fff!important;font-weight:700}.ug-movelist__move--empty{cursor:default}.ug-movelist__back-to-live{margin-top:8px;padding:6px 12px;font-size:12px;font-family:inherit;font-weight:600;color:#4338ca;background:#eef2ff;border:none;border-radius:6px;cursor:pointer;align-self:center;transition:background .15s}.ug-movelist__back-to-live:hover{background:#e0e7ff}.ug-controls{display:flex;gap:8px;padding:12px;border-top:1px solid #f0f0ec}.ug-controls__btn{flex:1;padding:9px 12px;font-size:13px;font-family:inherit;font-weight:600;border-radius:8px;cursor:pointer;transition:background .15s,border-color .15s,opacity .15s}.ug-controls__btn--abort{background:none;color:#64748b;border:1.5px solid #e0e0dc}.ug-controls__btn--abort:hover{background:var(--bg-app);border-color:#aaa}.ug-controls__btn--draw{background:none;color:#555;border:1.5px solid #e0e0dc}.ug-controls__btn--draw:hover:not(:disabled){background:var(--bg-app);border-color:#888}.ug-controls__btn--disabled{opacity:.5;cursor:not-allowed}.ug-controls__btn--resign{background:none;color:#dc2626;border:1.5px solid #fca5a5}.ug-controls__btn--resign:hover{background:#fef2f2}.ug-controls__btn--resign-confirm{background:#dc2626;color:#fff;border:1.5px solid #dc2626;animation:ug-btn-pulse .3s ease-out}@keyframes ug-btn-pulse{0%{transform:scale(.97)}to{transform:scale(1)}}.ug-join-page{align-items:center;justify-content:center;min-height:calc(100vh - 100px)}.ug-join-card{width:100%;max-width:400px;margin:0 auto;background:#fff;border:1px solid #e8e8e4;border-radius:20px;padding:40px 36px;box-shadow:0 4px 32px #00000012;animation:ug-page-in .35s ease-out both}.ug-join-header{display:flex;flex-direction:column;align-items:center;text-align:center;margin-bottom:20px}.ug-join-icon{font-size:40px;line-height:1;margin-bottom:12px;display:block}.ug-join-title{font-size:22px;font-weight:800;color:#1a1a2e;margin:0 0 6px}.ug-join-subtitle{font-size:14px;color:#666;margin:0}.ug-join-tc{display:flex;align-items:baseline;justify-content:center;gap:8px;margin-bottom:20px;padding:14px;background:#f8f8f4;border-radius:12px}.ug-join-tc__time{font-size:26px;font-weight:800;color:#1a1a2e;font-variant-numeric:tabular-nums}.ug-join-tc__cat{font-size:13px;font-weight:500;color:#888;text-transform:uppercase;letter-spacing:.05em}.ug-join-anon-note{font-size:12px;color:#78716c;background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:10px 12px;line-height:1.5;margin-bottom:4px}.ug-join-anon-note__link{color:#1a73e8;font-weight:600;text-decoration:none}.ug-join-anon-note__link:hover{text-decoration:underline}.ug-join-btn{width:100%;margin-top:4px}.ug-join-state{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;padding:8px 0}.ug-join-state--loading{gap:14px;color:#888;font-size:14px;padding:20px 0}.ug-join-state__icon{font-size:36px;line-height:1;opacity:.6}.ug-join-state h3{font-size:18px;font-weight:700;color:#1a1a2e;margin:0}.ug-join-state p{font-size:14px;color:#666;margin:0;line-height:1.5}.ug-join-state__msg{font-size:12px;color:#dc2626;background:#fef2f2;border-radius:8px;padding:8px 12px;max-width:100%;word-break:break-word}.ug-join-success{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}.ug-join-success__check{width:56px;height:56px;border-radius:50%;background:#f0fdf4;border:2px solid #86efac;display:flex;align-items:center;justify-content:center;font-size:24px;color:#16a34a;font-weight:700;animation:ug-pop-in .4s cubic-bezier(.34,1.56,.64,1) both}@keyframes ug-pop-in{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.ug-join-color-badge{display:flex;align-items:center;gap:10px;background:#f8f8f4;border-radius:10px;padding:10px 18px;font-size:14px;color:#444}.ug-join-color-icon{font-size:28px;line-height:1}.ug-join-color-icon--white{filter:drop-shadow(0 1px 2px rgba(0,0,0,.2))}.ug-join-color-icon--black{filter:drop-shadow(0 1px 1px rgba(0,0,0,.3))}.ug-join-vs{font-size:13px;color:#888;margin:0}.ug-join-redirect{font-size:13px;color:#aaa;margin:0;font-variant-numeric:tabular-nums}@media (max-width: 820px){.ug-play-layout{grid-template-columns:1fr;margin:24px auto}.ug-play-lobby-col{padding-right:0;border-right:none;border-bottom:1px solid #e8e8e4;padding-bottom:32px;margin-bottom:32px}.ug-play-history-col{padding-left:0}.ug-game-layout{flex-direction:column;padding:16px}.ug-game-board-col{width:100%}.ug-game-side-col{padding-left:0;padding-top:12px}}.up-page{min-height:calc(100vh - 100px);background:var(--bg-app);display:flex;flex-direction:column;animation:up-page-in .5s ease-out both}@keyframes up-page-in{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}.up-page--center{align-items:center;justify-content:center}.up-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#eaf2ff,#dbeafe 55%,#eff6ff);padding:64px 24px 56px}.up-hero__chessboard{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);pointer-events:none;opacity:.07}.up-hero__sq{background:transparent}.up-hero__sq--light{background:#fff}.up-hero__inner{position:relative;z-index:1;max-width:640px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}.up-hero__avatar{width:84px;height:84px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:800;color:#ffffffe6;border:3px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0006;letter-spacing:-1px;flex-shrink:0}.up-hero__identity{display:flex;flex-direction:column;align-items:center;gap:8px}.up-title-badge{display:inline-block;padding:3px 10px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#1a1a2e;background:linear-gradient(135deg,#fbbf24,#f59e0b);border-radius:6px;box-shadow:0 2px 8px #fbbf2459}.up-hero__username{font-size:clamp(28px,5vw,42px);font-weight:900;color:#0f172a;letter-spacing:-.03em;margin:0;line-height:1.1}.up-hero__ratings{display:flex;gap:24px;margin-top:4px}.up-rating-block{display:flex;flex-direction:column;align-items:center;gap:2px}.up-rating-block__value{font-size:22px;font-weight:800;color:#0f172a;letter-spacing:-.02em;line-height:1}.up-rating-block__label{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#ffffff73}.up-hero__edit-btn{margin-top:8px;padding:8px 22px;font-size:13px;font-family:inherit;font-weight:600;color:#ffffffd9;background:#ffffff1a;border:1.5px solid rgba(255,255,255,.2);border-radius:8px;cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:background .15s,border-color .15s}.up-hero__edit-btn:hover{background:#ffffff2e;border-color:#ffffff59}.up-hero--skeleton .up-hero__inner{gap:16px}.up-skeleton{background:#ffffff14;border-radius:8px;animation:up-shimmer 1.4s ease-in-out infinite}@keyframes up-shimmer{0%,to{opacity:.4}50%{opacity:.7}}.up-skeleton--avatar{width:84px;height:84px;border-radius:50%}.up-skeleton--title{width:200px;height:38px}.up-skeleton--line{width:120px;height:18px}.up-body{flex:1;padding:36px 24px 64px}.up-body__inner{max-width:960px;margin:0 auto;display:grid;grid-template-columns:260px 1fr;gap:28px;align-items:start}.up-sidebar{display:flex;flex-direction:column;gap:16px}.up-card{background:#fff;border-radius:12px;border:1px solid #e8e8e4;padding:20px;display:flex;flex-direction:column;gap:12px}.up-card__title{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#aaa;margin:0}.up-card__bio{font-size:14px;color:#444;line-height:1.7;margin:0;white-space:pre-wrap}.up-ext-links{display:flex;flex-direction:column;gap:8px}.up-ext-link{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#f8f8f4;border-radius:8px;font-size:13px;font-weight:500;color:#333;text-decoration:none;border:1px solid #ededea;transition:background .12s,border-color .12s}.up-ext-link:hover{background:#eef2ff;border-color:#c7d2fe;color:#4338ca}.up-ext-link__img{width:20px;height:20px;object-fit:contain;flex-shrink:0;border-radius:4px}.up-ratings-table{display:flex;flex-direction:column;gap:6px}.up-ratings-row{display:flex;justify-content:space-between;align-items:center;padding:6px 0;border-bottom:1px solid #f4f4f0}.up-ratings-row:last-child{border-bottom:none}.up-ratings-row__org{font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:#888}.up-ratings-row__val{font-size:18px;font-weight:700;color:#1a1a2e}.up-main{display:flex;flex-direction:column;gap:16px}.up-section-header{display:flex;align-items:center;justify-content:space-between}.up-section-title{font-size:18px;font-weight:700;color:#1a1a2e;margin:0}.up-notfound{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}.up-notfound__piece{font-size:48px;opacity:.25;line-height:1}.up-notfound__title{font-size:22px;font-weight:700;color:#1a1a2e;margin:0}.up-notfound__sub{font-size:14px;color:#888;margin:0}.up-notfound__btn{margin-top:8px;padding:9px 24px;font-size:14px;font-family:inherit;font-weight:600;color:#4338ca;background:#eef2ff;border:none;border-radius:8px;cursor:pointer;transition:background .15s}.up-notfound__btn:hover{background:#e0e7ff}.up-edit-page{background:var(--bg-app)}.up-edit-header{background:#fff;border-bottom:1px solid #e8e8e4;padding:0 24px;position:sticky;top:100px;z-index:100}.up-edit-header__inner{max-width:900px;margin:0 auto;padding:16px 0;display:flex;align-items:center;gap:20px}.up-edit-back-btn{padding:7px 14px;font-size:13px;font-family:inherit;font-weight:600;color:#555;background:none;border:1.5px solid #e0e0dc;border-radius:8px;cursor:pointer;flex-shrink:0;transition:border-color .15s,color .15s}.up-edit-back-btn:hover{border-color:#888;color:#1a1a2e}.up-edit-title{font-size:20px;font-weight:800;color:#1a1a2e;margin:0 0 2px}.up-edit-subtitle{font-size:12px;color:#888;margin:0}.up-edit-header__inner>.up-edit-save-btn{margin-left:auto;padding:9px 24px;font-size:14px;font-family:inherit;font-weight:700;color:#fff;background:#4338ca;border:none;border-radius:9px;cursor:pointer;flex-shrink:0;transition:background .15s,box-shadow .15s,opacity .15s}.up-edit-save-btn:hover:not(:disabled){background:#3730a3;box-shadow:0 2px 12px #4338ca4d}.up-edit-save-btn:disabled{opacity:.6;cursor:not-allowed}.up-edit-body{padding:36px 24px 80px}.up-edit-body__inner{max-width:900px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}.up-edit-section{background:#fff;border:1px solid #e8e8e4;border-radius:14px;padding:28px;display:flex;flex-direction:column;gap:22px}.up-edit-section-title{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#aaa;margin:0 0 4px}.up-edit-field{display:flex;flex-direction:column;gap:6px}.up-edit-label{font-size:13px;font-weight:600;color:#444}.up-edit-hint{font-size:11px;color:#aaa;margin-top:-4px}.up-edit-input{width:100%;box-sizing:border-box;padding:9px 12px;font-size:14px;font-family:inherit;border:1.5px solid #e0e0dc;border-radius:9px;background:#fafaf8;color:#1a1a2e;outline:none;transition:border-color .15s,box-shadow .15s,background .15s}.up-edit-input:focus{border-color:#818cf8;background:#fff;box-shadow:0 0 0 3px #818cf81f}.up-edit-input-wrap{display:flex;align-items:center;border:1.5px solid #e0e0dc;border-radius:9px;background:#fafaf8;overflow:hidden;transition:border-color .15s,box-shadow .15s}.up-edit-input-wrap:focus-within{border-color:#818cf8;box-shadow:0 0 0 3px #818cf81f}.up-edit-input-prefix{padding:0 10px;font-size:12px;color:#aaa;background:var(--bg-app);border-right:1.5px solid #e0e0dc;white-space:nowrap;line-height:38px;height:38px;display:flex;align-items:center}.up-edit-input--with-prefix{border:none;border-radius:0;background:transparent;box-shadow:none!important;flex:1;min-width:0}.up-edit-input--with-prefix:focus{box-shadow:none;border-color:transparent}.up-edit-textarea{width:100%;box-sizing:border-box;padding:10px 12px;font-size:14px;font-family:inherit;border:1.5px solid #e0e0dc;border-radius:9px;background:#fafaf8;color:#1a1a2e;outline:none;resize:vertical;line-height:1.6;transition:border-color .15s,box-shadow .15s,background .15s}.up-edit-textarea:focus{border-color:#818cf8;background:#fff;box-shadow:0 0 0 3px #818cf81f}.up-edit-char-count{font-size:11px;color:#aaa;text-align:right;margin-top:-4px}.up-edit-title-grid{display:flex;flex-wrap:wrap;gap:8px}.up-edit-title-btn{padding:6px 14px;font-size:12px;font-family:inherit;font-weight:600;border:1.5px solid #e0e0dc;border-radius:7px;background:#fafaf8;color:#555;cursor:pointer;transition:border-color .12s,background .12s,color .12s}.up-edit-title-btn:hover{border-color:#818cf8;color:#4338ca}.up-edit-title-btn--active{border-color:#4338ca;background:#eef2ff;color:#4338ca;font-weight:700}.up-edit-ratings-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.up-edit-toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%);padding:12px 28px;border-radius:10px;font-size:14px;font-weight:600;pointer-events:none;z-index:9999;animation:up-toast-in .2s ease-out;white-space:nowrap;box-shadow:0 8px 32px #0003}@keyframes up-toast-in{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.up-edit-toast--saving{background:#f0f9ff;color:#0369a1;border:1px solid #bae6fd}.up-edit-toast--success{background:#f0fdf4;color:#16a34a;border:1px solid #bbf7d0}.up-edit-toast--error{background:#fef2f2;color:#dc2626;border:1px solid #fca5a5}@media (max-width: 860px){.up-body__inner{grid-template-columns:1fr}.up-sidebar{flex-direction:row;overflow-x:auto;gap:12px;padding-bottom:4px}.up-card{min-width:220px;flex-shrink:0}.up-edit-body__inner{grid-template-columns:1fr}.up-edit-header__inner{flex-wrap:wrap;gap:12px}.up-edit-save-btn{width:100%;justify-content:center}.up-edit-ratings-grid{grid-template-columns:1fr 1fr}.up-hero__ratings{gap:20px}}@media (max-width: 520px){.up-hero{padding:48px 16px 40px}.up-hero__avatar{width:68px;height:68px;font-size:28px}.up-edit-ratings-grid{grid-template-columns:1fr}}html,body,#app{margin:0;padding:0;min-height:100%}body{background:var(--bg-app);color:var(--text-main);font-family:var(--font-family)}main{min-height:calc(100vh - 100px)}@keyframes fadeSlideIn{0%{opacity:0;transform:translate(6px)}to{opacity:1;transform:translate(0)}}.patch-study-page{min-height:calc(100vh - 100px);height:auto;padding:16px;box-sizing:border-box;overflow-y:auto}.patch-study-header-wrap{display:grid;grid-template-rows:1fr;transition:grid-template-rows .24s cubic-bezier(.4,0,.2,1)}.patch-study-header-wrap.is-collapsed{grid-template-rows:0fr}.patch-study-header-wrap>.patch-study-header{overflow:hidden;min-height:0}.patch-study-toggle-bar{display:flex;justify-content:center;align-items:center;height:18px;margin-bottom:10px;position:relative;z-index:1;transition:margin-top .24s cubic-bezier(.4,0,.2,1)}.patch-study-header-wrap:not(.is-collapsed)+.patch-study-toggle-bar{margin-top:-34px}.patch-study-header-wrap:not(.is-collapsed)+.patch-study-toggle-bar .patch-study-toggle-btn{background:transparent;color:#aaa}.patch-study-header-wrap:not(.is-collapsed)+.patch-study-toggle-bar .patch-study-toggle-btn:hover{background:#d8d8d8;color:#333}.patch-study-toggle-btn{display:flex;align-items:center;justify-content:center;width:36px;height:18px;border:none;border-radius:6px;background:#e8e8e8;color:#999;cursor:pointer;transition:background .15s ease,color .15s ease}.patch-study-toggle-btn:hover{background:#d8d8d8;color:#333}.patch-study-header{margin-bottom:16px;padding:2px 12px;border-radius:12px;display:grid;grid-template-columns:1fr auto;grid-template-areas:"title actions" "notice status";align-items:center;background:linear-gradient(135deg,#fff,#f8f9fa);box-shadow:0 2px 8px #00000014,0 1px 4px #0000000a;transition:box-shadow .3s ease}.patch-study-header:hover{box-shadow:0 4px 12px #0000001f,0 2px 6px #0000000f}.patch-study-header h2{margin:2px 0;font-size:40px;grid-area:title;justify-self:start;text-align:left}.patch-study-title{cursor:pointer;transition:background-color .2s;padding:2px 6px;border-radius:4px}.patch-study-title:hover{background-color:#f0f0f0}.patch-study-title-edit{grid-area:title;display:flex;flex-direction:column;gap:4px}.patch-study-title-input{font-size:40px;font-weight:700;border:2px solid #2e6bff;border-radius:4px;padding:2px 6px;outline:none;font-family:inherit;width:100%;box-sizing:border-box}.patch-study-title-error{color:#e74c3c;font-size:14px;margin-left:6px}.patch-study-notice{color:#888;font-size:16px;margin:0;grid-area:notice;justify-self:start;align-self:center}.patch-study-breadcrumb{color:#888;font-size:16px;margin:0;grid-area:notice;justify-self:start;align-self:center;display:flex;align-items:center;gap:6px;flex-wrap:wrap}.breadcrumb-separator{color:#ccc;-webkit-user-select:none;user-select:none}.breadcrumb-item{padding:2px 6px;border-radius:3px;transition:all .2s}.breadcrumb-item.clickable{background:none;border:none;font:inherit;cursor:pointer;color:#2e6bff}.breadcrumb-item.clickable:hover{background-color:#e3f2ff;color:#1e5bd9}.breadcrumb-item.clickable:focus-visible{outline:2px solid #2e6bff;outline-offset:2px}.breadcrumb-item.current{color:#333;font-weight:500;cursor:default}.patch-study-save-status{margin-top:0;color:#666;font-size:16px;grid-area:status;justify-self:end;align-self:center}.patch-study-actions{grid-area:actions;justify-self:end;align-self:center;display:flex;gap:2px;align-items:flex-end}.patch-study-save-button{background:#2e6bff;color:#fff;border:none;border-radius:6px;padding:6px 12px;font-size:14px;cursor:pointer}.patch-study-save-button:disabled{opacity:.6;cursor:not-allowed}.patch-study-layout{display:flex;height:calc(100vh - 280px);min-height:420px;gap:16px;border-radius:16px;padding:16px;overflow:hidden;box-sizing:border-box;background:linear-gradient(135deg,#fff,#fafbfc);box-shadow:0 4px 16px #00000014,0 2px 8px #0000000a;transition:box-shadow .3s ease}.patch-study-layout:hover{box-shadow:0 6px 20px #0000001f,0 3px 10px #0000000f}.patch-study-footer-row{display:flex;gap:16px;margin-top:12px}.patch-study-footer-spacer{width:280px;flex-shrink:0}.patch-study-footer-box{flex:1;padding:12px;box-sizing:border-box;background:#fff;border-radius:12px;box-shadow:0 2px 8px #00000014,0 1px 4px #0000000a;transition:all .3s ease}.patch-study-footer-box:hover{box-shadow:0 4px 12px #0000001f,0 2px 6px #0000000f}.patch-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;z-index:10000}.patch-modal{background:#fff;border-radius:10px;padding:20px 24px;width:360px;box-shadow:0 10px 30px #0003}.patch-modal h3{margin:0 0 8px;font-size:18px;color:#111}.patch-modal p{margin:0 0 12px;color:#444;font-size:14px}.patch-modal-input{width:100%;margin-bottom:12px;padding:8px 10px;border:1px solid #cfcfcf;border-radius:6px;font-size:14px;box-sizing:border-box}.patch-modal-error{margin-bottom:12px;color:#b71c1c;font-size:13px}.patch-modal-actions{display:flex;justify-content:flex-end;gap:10px}.patch-modal-button{padding:6px 12px;border:1px solid #ccc;background:#fff;border-radius:6px;cursor:pointer}.patch-modal-button.primary{background:#2e6bff;border-color:#2e6bff;color:#fff}.patch-modal-button.secondary{background:#f5f5f5;border-color:#ddd;color:#333}.patch-modal-button:disabled{opacity:.6;cursor:not-allowed}.study-comment-box{width:100%;display:flex;flex-direction:column;gap:10px;min-height:0}.study-comment-input{width:100%;flex:1;min-height:120px;resize:none;border:1px solid #d8dee7;border-radius:12px;padding:12px 14px;font-size:14px;line-height:1.55;color:#1f2937;background:#fff;box-sizing:border-box;transition:border-color .16s ease,box-shadow .16s ease}.study-comment-input::placeholder{color:#9aa4b2}.study-comment-input:focus{outline:none;border-color:#8ab4f8;box-shadow:0 0 0 3px #1a73e824}.study-comment-tabs{align-self:flex-start;display:flex;gap:4px;align-items:center;padding:3px;border:1px solid #d8dee7;border-radius:12px;background:#f3f6fb;box-shadow:inset 0 1px #ffffffbf}.study-comment-tab{min-height:32px;padding:0 14px;border:1px solid transparent;border-radius:9px;background:transparent;color:#4b5563;font-size:13px;font-weight:500;letter-spacing:.01em;line-height:1;cursor:pointer;transition:background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease}.study-comment-tab:hover:not(.is-active){background:#1a73e814;color:#334155}.study-comment-tab.is-active{background:#fff;color:#0f172a;border-color:#c7d2e3;box-shadow:0 1px 2px #0f172a14,0 0 0 1px #c7d2e3a6}.study-comment-tab:focus-visible{outline:none;box-shadow:0 0 0 3px #1a73e838}.study-comment-panel{flex:1;min-height:0}.study-info-panel{display:flex;flex-direction:column;gap:12px;height:auto}.study-fen-wrap{position:relative}.study-fen-box{width:100%;flex:0 0 auto;height:auto;resize:none;border:1px solid #ccc;border-radius:4px;padding:8px 96px 8px 8px;font-size:12px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;box-sizing:border-box;text-align:left;line-height:1.4}.study-fen-actions{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.study-fen-button{padding:6px 12px;background:#fff;border-radius:6px;cursor:pointer;font-size:12px;box-shadow:0 1px 3px #0000001f,0 1px 2px #00000014;transition:box-shadow .2s,transform .2s}.study-fen-button:hover:not(:disabled){box-shadow:0 2px 6px #0000002e,0 2px 4px #0000001f;transform:translateY(-1px)}.study-fen-button.is-inline{position:absolute;right:10px;top:50%;transform:translateY(-50%)}.study-fen-button.is-inline:hover:not(:disabled){transform:translateY(-50%) translateY(-1px)}.study-fen-button:disabled{opacity:.6;cursor:not-allowed}.study-output-card{border:1px solid #d8dee7;border-radius:12px;background:#fff;padding:10px;box-shadow:0 1px 2px #0f172a0a}.study-output-card-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.study-output-card-label{font-size:12px;font-weight:600;color:#64748b;letter-spacing:.02em;text-transform:uppercase}.study-fen-box.study-output-fen-box{min-height:72px;border:1px solid #e2e8f0;border-radius:10px;background:#f8fafc;color:#0f172a;padding:10px 12px;font-size:14px;line-height:1.45}.study-fen-actions.study-output-actions{flex-direction:row;align-items:stretch;gap:10px}.study-fen-button.study-output-copy-btn,.study-fen-button.study-output-action-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid #d2dae6;border-radius:10px;background:#fff;color:#1e293b;box-shadow:none;font-size:13px;font-weight:600;padding:8px 12px;min-height:36px;transition:background-color .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease}.study-fen-button.study-output-copy-btn:hover:not(:disabled),.study-fen-button.study-output-action-btn:hover:not(:disabled){background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8;box-shadow:none;transform:none}.study-fen-button.study-output-copy-btn:focus-visible,.study-fen-button.study-output-action-btn:focus-visible{outline:none;box-shadow:0 0 0 3px #2563eb33}.study-fen-button.study-output-action-btn{flex:1;justify-content:center}.study-export-toast{display:flex;align-items:flex-start;gap:8px;margin-top:10px;padding:8px 10px;border-radius:6px;font-size:12px;line-height:1.4;border:1px solid transparent}.study-export-toast--success{background:#16a34a1f;border-color:#16a34a4d;color:#15803d}.study-export-toast--warning{background:#d977061a;border-color:#d977064d;color:#b45309}.study-export-toast--error{background:#dc26261a;border-color:#dc26264d;color:#b91c1c}.study-export-toast-msg{flex:1}.study-export-toast-close{flex-shrink:0;background:none;border:none;cursor:pointer;font-size:14px;line-height:1;padding:0 2px;color:inherit;opacity:.6;transition:opacity .15s}.study-export-toast-close:hover{opacity:1}@media (max-width: 820px){.study-fen-actions.study-output-actions{flex-direction:column}}.patch-study-sidebar{width:280px;flex-shrink:0;display:flex;flex-direction:column;gap:12px;padding-right:12px;min-height:0;overflow:hidden;position:relative}.patch-study-sidebar:after{content:"";position:absolute;right:0;top:10px;bottom:10px;width:1px;background:linear-gradient(to bottom,transparent,rgba(0,0,0,.1) 20%,rgba(0,0,0,.1) 80%,transparent)}.patch-sidebar-content{display:flex;flex-direction:column;gap:12px;min-height:0;flex:1}.patch-analysis-scroll{display:flex;flex-direction:column;gap:12px;min-height:0;flex:1;overflow-y:auto}.patch-sidebar-tabs{display:flex;gap:4px;align-items:center;padding:3px;border:1px solid #d8dee7;border-radius:12px;background:#f3f6fb;box-shadow:inset 0 1px #ffffffbf}.patch-sidebar-tab{border:1px solid transparent;background:transparent;min-height:32px;padding:0 14px;border-radius:9px;color:#4b5563;font-size:13px;font-weight:500;line-height:1;cursor:pointer;transition:background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease}.patch-sidebar-tab:hover:not(.is-active){background:#1a73e814;color:#334155}.patch-sidebar-tab.is-active{background:#fff;color:#0f172a;border-color:#c7d2e3;box-shadow:0 1px 2px #0f172a14,0 0 0 1px #c7d2e3a6}.patch-sidebar-tab:focus-visible{outline:none;box-shadow:0 0 0 3px #1a73e838}.patch-analysis-settings{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;align-items:center;border-radius:10px;padding:12px;background:#fff;box-shadow:0 2px 6px #0000000f,0 1px 3px #0000000a;transition:all .3s ease}.patch-analysis-settings:hover{box-shadow:0 4px 10px #0000001a,0 2px 5px #0000000f}.patch-analysis-field{display:flex;flex-direction:column;gap:4px;font-size:12px}.patch-analysis-label{color:#242424;font-size:12px}.patch-analysis-field select{font-size:12px;width:100%}.patch-analysis-field select:disabled{opacity:.6;cursor:not-allowed}.patch-analysis-toggle{display:flex;align-items:center;height:100%}.patch-toggle{display:inline-flex;align-items:center;cursor:pointer}.patch-toggle input{position:absolute;opacity:0;width:0;height:0}.patch-toggle-track{width:36px;height:20px;background:#d1d1d1;border-radius:999px;position:relative;border:1px solid #bfbfbf;transition:background .2s,border-color .2s}.patch-toggle-track:after{content:"";position:absolute;width:16px;height:16px;left:1px;top:1px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #0003;transition:transform .2s}.patch-toggle input:checked+.patch-toggle-track{background:#242424;border-color:#242424}.patch-toggle input:checked+.patch-toggle-track:after{transform:translate(16px)}.patch-toggle input:focus-visible+.patch-toggle-track{outline:2px solid #242424;outline-offset:2px}.patch-analysis-panel{background:linear-gradient(135deg,#f8f9fa,#f1f3f5);border-radius:12px;display:flex;flex-direction:column;min-height:0;flex:0 0 auto;padding:12px;gap:8px;box-shadow:0 2px 8px #0000000f,0 1px 4px #0000000a;transition:all .3s ease}.patch-analysis-panel:hover{box-shadow:0 4px 12px #0000001a,0 2px 6px #0000000f}.patch-imitator-panel{background:#fff}.patch-imitator-settings{display:grid;grid-template-columns:1fr auto;gap:10px 12px;align-items:end;border-radius:10px;padding:12px;background:#fff;box-shadow:0 2px 6px #0000000f,0 1px 3px #0000000a;transition:all .3s ease}.patch-imitator-settings:hover{box-shadow:0 4px 10px #0000001a,0 2px 5px #0000000f}.patch-imitator-field{display:flex;flex-direction:column;gap:4px;font-size:12px}.patch-imitator-field select{font-size:12px;width:100%}.patch-imitator-add{background:#242424;color:#fff;border-radius:6px;padding:6px 10px;font-size:12px;cursor:pointer;height:28px;box-shadow:0 1px 3px #0000001f,0 1px 2px #00000014;transition:box-shadow .2s,transform .2s}.patch-imitator-add:hover:not(:disabled){box-shadow:0 2px 6px #0000002e,0 2px 4px #0000001f;transform:translateY(-1px)}.patch-imitator-add:disabled{opacity:.6;cursor:not-allowed}.patch-imitator-card{border-radius:10px;padding:12px;display:flex;flex-direction:column;gap:8px;background:linear-gradient(135deg,#fff,#f9fafb);box-shadow:0 2px 6px #0000000f,0 1px 3px #0000000a;transition:all .3s ease}.patch-imitator-card:hover{box-shadow:0 4px 10px #0000001a,0 2px 5px #0000000f;transform:translateY(-1px)}.patch-imitator-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.patch-imitator-title{font-size:13px;font-weight:600;color:#111}.patch-imitator-meta{font-size:11px;color:#666;display:flex;gap:8px;align-items:center}.patch-imitator-remove:hover{box-shadow:0 2px 6px #0000002e,0 2px 4px #0000001f;transform:translateY(-1px)}.patch-imitator-updated{color:#999}.patch-imitator-remove{background:#fff;border-radius:999px;padding:4px 8px;font-size:11px;cursor:pointer;box-shadow:0 1px 3px #0000001f,0 1px 2px #00000014;transition:box-shadow .2s,transform .2s}.patch-imitator-status{display:flex;gap:8px;align-items:center}.patch-imitator-moves{display:flex;flex-direction:column;gap:6px;font-family:Courier New,Courier,monospace;font-size:12px}.patch-imitator-row{display:grid;grid-template-columns:60px 1fr;gap:8px;align-items:start}.patch-imitator-prob{text-align:right;color:#111}.patch-imitator-move{display:flex;flex-direction:column;gap:2px;color:#333}.patch-imitator-move.is-inaccuracy{color:#ff6a3d}.patch-imitator-tags{color:#777;font-size:11px}.patch-analysis-status{display:flex;gap:8px;align-items:center;font-size:12px;line-height:16px;color:#242424}.patch-analysis-badge{padding:2px 6px;border-radius:999px;font-size:11px;text-transform:uppercase}.patch-analysis-badge.is-running{background:#ffe9a8}.patch-analysis-badge.is-ready{background:#d1f3dd}.patch-analysis-badge.is-error{background:#ffd1d1}.patch-analysis-badge.is-idle{background:#e6e6e6}.patch-analysis-health{color:#555}.patch-analysis-updated{margin-left:auto;color:#666}.patch-analysis-source{color:#666}.patch-analysis-error{color:#b91c1c;font-size:12px;line-height:16px}.patch-analysis-lines{flex:0 0 auto;min-height:0;overflow:visible;font-family:Menlo,monospace;font-size:12px;line-height:16px;display:flex;flex-direction:column;gap:6px}.patch-context-menu{position:fixed;background:#fff;border-radius:12px;box-shadow:0 12px 32px #00000026,0 4px 12px #0000001a;padding:6px;min-width:180px;z-index:2000;animation:contextMenuFadeIn .15s ease-out}@keyframes contextMenuFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.patch-context-item{width:100%;text-align:left;border:none;background:transparent;padding:8px 10px;border-radius:6px;font-size:12px;cursor:pointer}.patch-context-item:hover:not(:disabled){background:#f0f0f0}.patch-context-item:disabled{opacity:.5;cursor:not-allowed}.patch-context-item.is-danger{color:#b91c1c}.patch-confirm-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000040;display:flex;align-items:center;justify-content:center;z-index:2100}.patch-confirm-card{background:#fff;border-radius:12px;padding:16px;width:320px;box-shadow:0 4px 12px #00000026,0 16px 30px #0003}.patch-confirm-title{font-size:14px;font-weight:600;margin-bottom:8px}.patch-confirm-body{font-size:12px;color:#444;margin-bottom:14px}.patch-confirm-actions{display:flex;justify-content:flex-end;gap:8px}.patch-confirm-btn{background:#fff;border-radius:8px;padding:6px 10px;font-size:12px;cursor:pointer;box-shadow:0 1px 3px #0000001f,0 1px 2px #00000014;transition:box-shadow .2s,transform .2s}.patch-confirm-btn:hover{box-shadow:0 2px 6px #0000002e,0 2px 4px #0000001f;transform:translateY(-1px)}.patch-confirm-btn.is-danger{background:#b91c1c;border-color:#b91c1c;color:#fff}.patch-analysis-line{display:grid;grid-template-columns:50px 1fr;gap:8px;align-items:start;line-height:16px}.patch-analysis-score{text-align:right;color:#111}.patch-analysis-pv{color:#333}.patch-analysis-empty{color:#666;font-size:12px}.patch-study-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:0;overflow:hidden}.patch-study-rightbar{width:280px;flex-shrink:0;display:flex;flex-direction:column;padding-left:12px;min-height:0;overflow:hidden;position:relative}.patch-study-rightbar:before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:1px;background:linear-gradient(to bottom,transparent,rgba(0,0,0,.1) 20%,rgba(0,0,0,.1) 80%,transparent)}.patch-study-splitter{width:8px;cursor:col-resize;background:linear-gradient(to right,transparent,rgba(0,0,0,.08),transparent);position:relative}.patch-study-splitter:after{content:"";position:absolute;top:0;bottom:0;left:2px;right:2px;background:#00000014;opacity:0;transition:opacity .2s}.patch-study-splitter:hover:after{opacity:1}.patch-right-panel{background:linear-gradient(135deg,#f8f9fa,#f1f3f5);border-radius:12px;display:flex;flex-direction:column;flex:1;min-height:520px;padding:12px;overflow:hidden;box-shadow:0 2px 8px #0000000f,0 1px 4px #0000000a;transition:all .3s ease}.patch-right-panel:hover{box-shadow:0 4px 12px #0000001a,0 2px 6px #0000000f}.study-board-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:transparent;border-radius:4px}.study-board-nav{position:relative;display:flex;align-items:center;justify-content:center;width:100%;height:44px;flex-shrink:0;margin-top:6px}.study-board-nav-center{display:flex;align-items:stretch;background:#f0f0f0;border-radius:12px;padding:3px;gap:1px;box-shadow:inset 0 1px 3px #00000014}.study-board-nav-button{display:flex;align-items:center;justify-content:center;width:40px;height:36px;border:none;border-radius:9px;background:transparent;color:#555;cursor:pointer;transition:background .12s ease,color .12s ease,transform .1s ease,box-shadow .12s ease}.study-board-nav-button:hover{background:#fff;color:#111;box-shadow:0 1px 4px #0000001a}.study-board-nav-button:active{background:#e8e8e8;color:#000;transform:scale(.93);box-shadow:none}.study-board-nav-flip{position:absolute;right:0;display:flex;align-items:center;justify-content:center;gap:5px;height:36px;padding:0 12px;border:none;border-radius:10px;background:#f0f0f0;color:#555;font-size:12px;font-weight:500;letter-spacing:.02em;cursor:pointer;box-shadow:inset 0 1px 3px #00000014;transition:background .12s ease,color .12s ease,box-shadow .12s ease}.study-board-nav-flip:hover{background:#e4e4e4;color:#111;box-shadow:inset 0 1px 3px #0000001f,0 1px 4px #00000014}.study-board-nav-flip:active{background:#d8d8d8;box-shadow:inset 0 2px 4px #00000024}.study-board-placeholder{color:#666;font-size:16px}.move-tree-container{width:100%;background:transparent;border-radius:4px;padding:16px;flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.move-tree-placeholder{color:#666;font-size:14px}.move-tree-content{flex:1;min-height:0;overflow:auto}.move-tree-title{position:sticky;top:0;z-index:1;background:#f5f5f5;padding-top:8px}.patch-chapter-list{background:linear-gradient(135deg,#f8f9fa,#f1f3f5);border-radius:12px;display:flex;flex-direction:column;flex:1;min-height:520px;box-shadow:0 2px 8px #0000000f,0 1px 4px #0000000a;transition:all .3s ease}.patch-chapter-list:hover{box-shadow:0 4px 12px #0000001a,0 2px 6px #0000000f}.patch-chapter-list__header{display:flex;justify-content:space-between;align-items:center;padding:12px 14px 10px;border-bottom:1px solid rgba(0,0,0,.08);background:linear-gradient(to bottom,rgba(255,255,255,.6),transparent)}.patch-chapter-list__header h3{margin:0;font-size:14px;color:#000}.patch-chapter-list__header p{margin:2px 0 0;font-size:12px;color:#000}.patch-chapter-list__new{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:0 13px;background:linear-gradient(180deg,#5f87d8,#4b74c9);color:#fff;border:1px solid #446ab8;border-radius:10px;font-size:12px;font-weight:600;letter-spacing:.01em;cursor:pointer;box-shadow:0 1px 2px #0f172a1f,0 3px 8px #3b60ad3d;transition:background-color .16s ease,border-color .16s ease,color .16s ease,box-shadow .16s ease,transform .16s ease}.patch-chapter-list__new:hover{background:linear-gradient(180deg,#567fcf,#426abf);border-color:#3b5fa8;box-shadow:0 2px 4px #0f172a24,0 5px 12px #3b60ad47;transform:translateY(-1px)}.patch-chapter-list__new:active{background:linear-gradient(180deg,#4f77c5,#3f65b7);border-color:#36589b;transform:translateY(0)}.patch-chapter-list__new:focus-visible{outline:none;box-shadow:0 0 0 3px #5e8adb59,0 2px 6px #3b60ad4d}.patch-chapter-list__scroll{overflow-y:scroll;scrollbar-gutter:stable;max-height:none;flex:1;min-height:0;padding:8px 12px 8px 8px;display:flex;flex-direction:column;gap:8px}.patch-chapter-list__scroll::-webkit-scrollbar{width:8px}.patch-chapter-list__scroll::-webkit-scrollbar-thumb{background:#00000040;border-radius:999px}.patch-chapter-list__scroll::-webkit-scrollbar-track{background:transparent}.patch-chapter-list__item{width:100%;background:#fff;color:#000;border:none;border-radius:10px;padding:10px 12px;display:flex;align-items:center;gap:10px;cursor:pointer;text-align:left;position:relative;box-shadow:0 1px 3px #0000000f,0 1px 2px #00000008;transition:all .2s ease;animation:chapterSlideUp .3s ease-out}@keyframes chapterSlideUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.patch-chapter-list__item:hover{background:#f8f9fa;box-shadow:0 3px 8px #0000001a,0 2px 4px #0000000f}.patch-chapter-list__item.is-active{background:linear-gradient(135deg,#2e6bff26,#2e6bff14);box-shadow:0 3px 10px #2e6bff33,0 1px 4px #2e6bff1a;border-left:3px solid #2e6bff}.patch-chapter-list__item.is-dragging{opacity:.6}.patch-chapter-list__item.is-drop-before{margin-top:16px}.patch-chapter-list__item.is-drop-before:before{content:"";position:absolute;top:-12px;left:6px;right:6px;border-top:2px solid #2e6bff}.patch-chapter-list__item.is-drop-after{margin-bottom:16px}.patch-chapter-list__item.is-drop-after:after{content:"";position:absolute;bottom:-12px;left:6px;right:6px;border-bottom:2px solid #2e6bff}.patch-chapter-list__drag{width:24px;height:24px;border-radius:6px;background:#f7f7f7;color:#666;display:inline-flex;align-items:center;justify-content:center;cursor:grab;flex-shrink:0;box-shadow:0 1px 2px #0000000d}.patch-chapter-list__drag:active{cursor:grabbing}.patch-chapter-list__drag svg{width:14px;height:14px;fill:currentColor}.patch-chapter-list__order{width:26px;height:26px;border-radius:6px;background:#f7f7f7;display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:#666;flex-shrink:0;cursor:grab;box-shadow:0 1px 2px #0000000d}.patch-chapter-list__order:active{cursor:grabbing}.patch-chapter-list__title{font-size:13px;line-height:1.2}.patch-chapter-list__title-edit{flex:1;display:flex;flex-direction:column}.patch-chapter-list__title-input{flex:1;border-radius:4px;padding:6px 8px;font-size:13px;line-height:1.2;background:#fff;color:#000;border:2px solid #2e6bff;box-shadow:0 0 0 3px #2e6bff1a;outline:none}.patch-chapter-list__error{display:block;margin-top:4px;font-size:12px;color:#d93025}.patch-chapter-list__delete{margin-left:auto;flex-shrink:0;width:26px;height:26px;border:none;border-radius:50%;background:#f7f7f7;color:#777;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;box-shadow:0 1px 3px #0000001f,0 1px 2px #00000014;transition:all .2s ease}.patch-chapter-list__delete:hover{background:#ffe6ee;color:#d94f84;box-shadow:0 2px 6px #d94f8440,0 2px 4px #0000001a;transform:translateY(-1px)}.patch-chapter-list__delete:disabled{opacity:.6;cursor:not-allowed}.patch-chapter-list__delete svg{width:14px;height:14px;fill:currentColor}.patch-action-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:flex;align-items:center;justify-content:center;z-index:10000}.patch-action-card{background:#fff;border-radius:10px;padding:16px 18px;width:320px;box-shadow:0 4px 12px #00000026,0 8px 16px #0003}.patch-action-title{font-size:14px;font-weight:700;margin-bottom:10px}.patch-action-body{font-size:13px;color:#333;margin-bottom:16px}.patch-action-emphasis{margin-top:4px;font-weight:600}.patch-action-buttons{display:flex;justify-content:flex-end;gap:8px}.patch-action-btn{padding:6px 12px;border:1px solid #cfcfcf;background:#fff;border-radius:6px;cursor:pointer;font-size:12px}.patch-action-btn.is-danger{background:#e53935;border-color:#e53935;color:#fff}.patch-chapter-list__empty{padding:16px;text-align:center;font-size:12px;color:#000}.patch-chapter-list__actions{display:flex;gap:8px}.patch-chapter-list__import-fen{padding:6px 12px;border:1px solid #cfcfcf;background:#fff;border-radius:6px;cursor:pointer;font-size:12px;font-weight:500;color:#666;transition:all .2s}.patch-chapter-list__import-fen:hover{background:#f5f5f5;border-color:#999;color:#333}.patch-action-card--wide{width:480px;max-width:90vw}.patch-fen-import-form{display:flex;flex-direction:column;gap:10px}.patch-fen-import-label{font-size:12px;font-weight:600;color:#333;margin-bottom:-6px}.patch-fen-import-input{padding:8px 10px;border:1px solid #cfcfcf;border-radius:6px;font-size:13px;font-family:inherit}.patch-fen-import-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.patch-fen-import-textarea{padding:8px 10px;border:1px solid #cfcfcf;border-radius:6px;font-size:12px;font-family:Courier New,monospace;resize:vertical;min-height:60px}.patch-fen-import-textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.patch-fen-import-hint{font-size:11px;color:#666;line-height:1.4}.patch-fen-import-error{padding:8px 10px;background:#fee;border:1px solid #fcc;border-radius:6px;font-size:12px;color:#c33}.patch-action-btn--primary{background:#3b82f6;border-color:#3b82f6;color:#fff;font-weight:500}.patch-action-btn--primary:hover:not(:disabled){background:#2563eb;border-color:#2563eb}.patch-action-btn:disabled{opacity:.5;cursor:not-allowed}.patch-modal-label{display:block;font-size:12px;font-weight:600;color:#333;margin-top:12px;margin-bottom:6px}.patch-modal-hint{display:block;font-size:11px;font-weight:400;color:#666;margin-left:8px}.patch-modal-textarea{width:100%;padding:8px 10px;border:1px solid #cfcfcf;border-radius:6px;font-size:12px;font-family:Courier New,monospace;resize:vertical;box-sizing:border-box}.patch-modal-textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.patch-modal-hint-text{font-size:11px;color:#666;margin-top:4px;line-height:1.4}.patch-modal-tabs{display:flex;gap:4px;margin-bottom:14px;border-bottom:1px solid #e5e7eb;padding-bottom:0}.patch-modal-tab{padding:6px 14px;font-size:12px;font-weight:500;color:#555;background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-1px;cursor:pointer;border-radius:4px 4px 0 0;transition:color .15s,border-color .15s}.patch-modal-tab:hover{color:#222}.patch-modal-tab.is-active{color:#3b82f6;border-bottom-color:#3b82f6;font-weight:600}.patch-modal-tab:disabled{opacity:.5;cursor:not-allowed}.patch-modal-textarea--pgn{font-size:11px;height:160px;margin-bottom:8px}.patch-modal-pgn-actions{display:flex;gap:8px;align-items:center;margin-bottom:10px}.patch-modal-pgn-preview{background:#f3f4f6;border-radius:6px;padding:8px 12px;margin-bottom:8px;font-size:12px;color:#374151}.patch-modal-pgn-preview__first{margin-top:2px;font-size:11px;color:#6b7280}.patch-modal-progress{margin-top:10px}.patch-modal-progress__label{font-size:12px;color:#6b7280;margin-bottom:6px}.patch-modal-progress__bar{height:6px;background:#e5e7eb;border-radius:3px;overflow:hidden}.patch-modal-progress__fill{height:100%;background:#3b82f6;border-radius:3px;transition:width .15s ease}.patch-modal-progress__fill.is-indeterminate{width:40%!important;animation:pgn-indeterminate 1.2s ease-in-out infinite}@keyframes pgn-indeterminate{0%{transform:translate(-100%)}to{transform:translate(300%)}}.game-viewer-page{padding-top:16px}.game-viewer-page .patch-study-footer-box{height:auto}.game-viewer-loading,.game-viewer-error{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - 120px);gap:16px;color:#9ca3af}.game-card{padding:0;font-family:Google Sans,Roboto,-apple-system,sans-serif;font-size:13px}.game-card__source{padding:10px 14px 6px;font-size:9px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#888;-webkit-user-select:none;user-select:none}.game-card__players{padding:8px 14px 10px;display:flex;flex-direction:column;gap:10px}.game-card__player{display:flex;align-items:center;gap:9px;min-width:0}.game-card__dot{flex-shrink:0;width:13px;height:13px;border-radius:50%}.game-card__dot--white{background:#d8d8d8;box-shadow:inset 0 -1px 2px #0006,0 1px 4px #00000080}.game-card__dot--black{background:#111;border:1.5px solid #404040;box-shadow:inset 0 1px 2px #ffffff0d,0 1px 4px #000000b3}.game-card__name{flex:1;font-weight:600;font-size:12.5px;color:#000;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:.01em}.game-card__rating{flex-shrink:0;font-size:11px;font-weight:500;color:#666;font-variant-numeric:tabular-nums;letter-spacing:.02em}.game-card__result{display:flex;align-items:center;gap:10px;padding:10px 14px;border-top:1px solid #e5e7eb;border-bottom:1px solid #e5e7eb}.game-card__result-rule{flex:1;height:1px;background:#ccc}.game-card__result-text{font-size:15px;font-weight:700;letter-spacing:.06em;font-variant-numeric:tabular-nums}.game-card__result--white .game-card__result-text,.game-card__result--black .game-card__result-text,.game-card__result--draw .game-card__result-text{color:#111}.game-card__meta{padding:10px 14px 4px;display:flex;flex-direction:column;gap:4px}.game-card__event{font-size:11.5px;color:#444;line-height:1.45;font-style:italic}.game-card__date{font-size:11px;color:#888;font-variant-numeric:tabular-nums;letter-spacing:.02em}.game-output-bar{display:flex;align-items:center;gap:8px;padding:6px 8px;width:100%;box-sizing:border-box}.game-output-fen-wrap{flex:1;min-width:0}