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16px}.header-title h1{font-size:16px}}@media (max-width: 768px){.app-container{flex-direction:column;height:100vh;overflow:hidden}.sidebar{position:fixed;top:0;left:-320px;width:290px;height:100vh;z-index:1000;transition:left .3s cubic-bezier(.4,0,.2,1);box-shadow:0 0 30px #0000004d}.sidebar.mobile-open{left:0!important}.sidebar-toggle{display:none!important}.mobile-menu-btn{display:flex}.top-header{padding:10px 12px;flex-direction:column;align-items:stretch;gap:10px}.top-header-top{display:flex;align-items:center;gap:10px;width:100%}.header-title h1{font-size:15px}.header-title p{font-size:11px}.header-actions{width:100%;overflow-x:auto;padding-bottom:4px;gap:6px;justify-content:flex-start;-webkit-overflow-scrolling:touch}.header-actions::-webkit-scrollbar{display:none}.header-actions .btn{padding:6px 10px;font-size:11.5px;white-space:nowrap;flex-shrink:0}.workspace{flex-direction:column;padding:10px;gap:0;flex:1;min-height:0;overflow-y:auto}.mobile-workspace-tabs{display:flex;width:100%;border:1px solid var(--border-color);border-radius:12px;background:#fff;padding:4px;gap:4px;margin-bottom:10px;box-shadow:var(--shadow-sm);flex-shrink:0}.mobile-tab-btn{flex:1;border:none;padding:8px 10px;border-radius:8px;font-size:12px;font-weight:700;color:var(--text-muted);background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:var(--transition-fast)}.mobile-tab-btn.active{background:var(--primary);color:#fff;box-shadow:0 2px 6px #0b3b6033}.workspace:not(.show-preview-tab) .form-panel{display:flex!important;width:100%;height:100%;flex:1}.workspace:not(.show-preview-tab) .preview-panel{display:none!important}.workspace.show-preview-tab .form-panel{display:none!important}.workspace.show-preview-tab .preview-panel{display:flex!important;width:100%;height:100%;flex:1}.preview-panel{width:100%}.preview-scroll-container{padding:8px;overflow-x:auto}.a4-sheet{padding:16px;font-size:85%}.a4-sheet.sei-mode,.home-view{padding:12px}.home-hero{padding:22px 18px;border-radius:14px}.hero-title{font-size:20px}.hero-subtitle{font-size:12.5px}.hero-stats{gap:16px}.steps-grid,.features-grid,.categories-grid{grid-template-columns:1fr;gap:12px}}