.help-modal{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000;display:none;align-items:center;justify-content:center;padding:var(--spacing-lg)}.help-modal.active{display:flex}.help-modal-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .3s ease}.help-modal-content{position:relative;background:var(--surface);border-radius:12px;box-shadow:0 10px 40px #0003;max-width:900px;width:100%;max-height:85vh;display:flex;flex-direction:column;animation:slideUp .3s ease}.help-modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border);background:var(--background);border-radius:12px 12px 0 0}.help-modal-header h2{margin:0;font-size:22px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:var(--spacing-sm)}.help-modal-close{background:transparent;border:none;font-size:32px;line-height:1;cursor:pointer;color:var(--text-secondary);padding:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--border-radius);transition:all .2s ease}.help-modal-close:hover{background:var(--border);color:var(--text-primary);transform:rotate(90deg)}.help-modal-body{flex:1;overflow-y:auto;padding:var(--spacing-lg)}.help-section{margin-bottom:var(--spacing-xl)}.help-section:last-child{margin-bottom:0}.help-section-title{font-size:18px;font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-md) 0;display:flex;align-items:center;gap:var(--spacing-sm)}.help-section-icon{font-size:24px}.help-section-content{color:var(--text-secondary);line-height:1.6;font-size:14px}.help-section-content p{margin:0 0 var(--spacing-sm) 0}.help-section-content p:last-child{margin-bottom:0}.help-tips{display:flex;flex-direction:column;gap:var(--spacing-md)}.help-tip{display:flex;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--background);border-radius:var(--border-radius);border-left:3px solid var(--primary)}.help-tip-icon{font-size:24px;flex-shrink:0}.help-tip-content{flex:1}.help-tip-title{font-weight:600;color:var(--text-primary);margin:0 0 var(--spacing-xs) 0;font-size:14px}.help-tip-text{color:var(--text-secondary);margin:0;font-size:13px;line-height:1.5}.help-shortcuts{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--spacing-sm)}.help-shortcut{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-sm);background:var(--background);border-radius:var(--border-radius);font-size:13px}.help-shortcut-action{color:var(--text-primary)}.help-shortcut-keys{display:flex;gap:var(--spacing-xs)}.help-key{padding:2px 8px;background:var(--surface);border:1px solid var(--border);border-radius:4px;font-family:monospace;font-size:12px;color:var(--text-primary);box-shadow:0 1px 2px #0000001a}.help-modal-footer{border-top:1px solid var(--border);padding:var(--spacing-lg);background:var(--background);border-radius:0 0 12px 12px;display:flex;justify-content:space-between;align-items:center}.help-contact{font-size:13px;color:var(--text-secondary)}.help-contact a{color:var(--primary);text-decoration:none;font-weight:600}.help-contact a:hover{text-decoration:underline}.help-close-btn{padding:var(--spacing-sm) var(--spacing-lg);background:var(--primary);color:#fff;border:none;border-radius:var(--border-radius);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.help-close-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){.help-modal-content{max-width:100%;max-height:90vh;margin:0}.help-shortcuts{grid-template-columns:1fr}.help-modal-footer{flex-direction:column;gap:var(--spacing-md);text-align:center}}