:root{--bg:#f5efe3;--bg-elev:#fbf7ee;--bg-soft:#ede6d6;--border:#e1d7c2;--border-strong:#c9bc9f;--primary:#7a5c36;--primary-soft:#9c7b4e;--accent:#c49856;--accent-soft:#d4b07a;--text:#2a1f12;--text-soft:#6b5a42;--text-muted:#948368;--danger:#a8433a;--success:#5c7a3a;--surface:#fbf7ee;--surface-translucent:#fbf7eed9;--shadow-sm:0 1px 2px #2a1f120f;--shadow-md:0 4px 12px #2a1f1214;--shadow-lg:0 12px 32px #2a1f1224;--font-display:"Fraunces", "Cormorant Garamond", Georgia, serif;--font-body:"Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--header-h:56px;--toolbar-w:76px;--panel-w:360px;--ease:cubic-bezier(.4, 0, .2, 1);--ease-out:cubic-bezier(.16, 1, .3, 1)}*{box-sizing:border-box}html,body{overscroll-behavior:none;background:var(--bg);height:100%;color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;font-size:14px;line-height:1.5;overflow:hidden}body{touch-action:none;-webkit-tap-highlight-color:transparent;width:100%;position:fixed;inset:0}#root{flex-direction:column;width:100vw;height:100dvh;display:flex;position:relative}button{font-family:inherit;font-size:inherit;cursor:pointer;color:inherit;-webkit-appearance:none;touch-action:manipulation;background:0 0;border:none;padding:0}.btn{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);transition:all .15s var(--ease);white-space:nowrap;-webkit-user-select:none;user-select:none;align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:500;display:inline-flex}.btn:hover{background:var(--bg-soft);border-color:var(--border-strong)}.btn:active{transform:scale(.97)}.btn-primary{background:var(--primary);border-color:var(--primary);color:var(--bg)}.btn-primary:hover{background:var(--primary-soft);border-color:var(--primary-soft)}.btn-accent{background:var(--accent);border-color:var(--accent);color:var(--bg)}.btn-danger{border-color:var(--danger);color:var(--danger);background:0 0}.btn-danger:hover{background:#a8433a14}.btn-icon{justify-content:center;width:36px;height:36px;padding:8px}.btn-sm{padding:4px 10px;font-size:12px}.app-header{height:var(--header-h);border-bottom:1px solid var(--border);background:var(--surface);z-index:30;padding:0 20px;padding-top:env(safe-area-inset-top);height:calc(var(--header-h) + 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auto}.toolbar-section-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);text-align:center;margin:8px 0 2px;font-size:10px;font-weight:600}.toolbar-divider{background:var(--border);width:40px;height:1px;margin:8px 0}.tool-btn{border-radius:var(--radius-sm);color:var(--text-soft);width:60px;transition:all .15s var(--ease);-webkit-user-select:none;user-select:none;cursor:pointer;background:0 0;border:1px solid #0000;flex-direction:column;align-items:center;gap:2px;padding:8px 4px;font-size:10px;display:flex}.tool-btn:hover{background:var(--bg-soft);color:var(--text)}.tool-btn.active{background:var(--primary);color:var(--bg);border-color:var(--primary)}.tool-btn.active-pending{background:var(--accent);color:var(--bg);border-color:var(--accent);animation:pulse 1.6s var(--ease) infinite}@keyframes pulse{0%,to{box-shadow:0 0 #c4985673}50%{box-shadow:0 0 0 6px #c4985600}}.canvas-wrap{background:var(--bg);touch-action:none;flex:1;min-width:0;position:relative;overflow:hidden}.canvas-grid{pointer-events:none;background-image:linear-gradient(90deg,#7a5c360f 1px,#0000 1px),linear-gradient(#7a5c360f 1px,#0000 1px);background-size:24px 24px;position:absolute;inset:0}.canvas-svg{width:100%;height:100%;position:absolute;inset:0;overflow:visible}.canvas-add-mode{cursor:crosshair!important}.canvas-add-mode .canvas-grid{background-color:#c498560d}.canvas-connect-mode{cursor:cell!important}.canvas-connect-mode .canvas-grid{background-color:#c4985614}.canvas-wrap:active{cursor:grabbing}.canvas-zoom-badge{background:var(--surface-translucent);border:1px solid var(--border);color:var(--text-soft);font-variant-numeric:tabular-nums;-webkit-backdrop-filter:blur(8px);pointer-events:none;z-index:10;-webkit-user-select:none;user-select:none;border-radius:999px;padding:6px 12px;font-size:11px;position:absolute;bottom:16px;left:50%;transform:translate(-50%)}.canvas-empty{color:var(--text-muted);text-align:center;pointer-events:none;flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:24px;display:flex;position:absolute;inset:0}.canvas-empty h3{font-family:var(--font-display);color:var(--text-soft);margin:0;font-size:22px;font-style:italic;font-weight:400}.canvas-empty p{max-width:360px;font-size:13px;line-height:1.55}.canvas-empty .btn{pointer-events:auto}.node{cursor:grab;-webkit-user-select:none;user-select:none;transition:filter .15s var(--ease);touch-action:none;flex-direction:column;align-items:center;gap:4px;display:flex;position:absolute}.node:hover{filter:brightness(1.05)}.node.dragging{cursor:grabbing;z-index:100;filter:drop-shadow(0 6px 12px #2a1f122e)}.node.selected .node-body{border-color:var(--accent);box-shadow:0 0 0 3px #c4985640, var(--shadow-md)}.node.connecting-source .node-body{animation:connect-pulse 1.2s var(--ease) infinite}.node.connect-target .node-body{border-color:var(--success);animation:1.4s ease-in-out infinite connect-target-pulse;box-shadow:0 0 0 3px #5c7a3a40}@keyframes connect-target-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}@keyframes connect-pulse{0%,to{box-shadow:0 0 #c4985666}50%{box-shadow:0 0 0 8px #c4985600}}.node-body{background:var(--surface);border:1.5px solid var(--border-strong);width:52px;height:52px;color:var(--primary);transition:all .15s var(--ease);box-shadow:var(--shadow-sm);border-radius:50%;justify-content:center;align-items:center;display:flex}.node-label{color:var(--text);background:var(--surface-translucent);text-overflow:ellipsis;white-space:nowrap;border:1px solid var(--border);pointer-events:none;border-radius:4px;max-width:110px;padding:1px 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var(--border);z-index:20;flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.panel-header{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.panel-title{font-family:var(--font-display);color:var(--primary);align-items:center;gap:8px;margin:0;font-size:18px;font-style:italic;font-weight:500;display:flex}.panel-body{-webkit-overflow-scrolling:touch;flex:1;padding:16px 20px 24px;overflow:hidden auto}.panel-section{margin-bottom:20px}.panel-section-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:8px;font-size:10px;font-weight:600}.panel-empty{color:var(--text-muted);text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:8px;padding:32px 20px;display:flex}.panel-empty-icon{background:var(--bg-soft);width:48px;height:48px;color:var(--text-muted);border-radius:50%;justify-content:center;align-items:center;margin-bottom:4px;display:flex}.panel-empty-text{max-width:240px;font-size:13px;line-height:1.5}.field{flex-direction:column;gap:4px;margin-bottom:12px;display:flex}.field-label{color:var(--text-soft);align-items:center;gap:4px;font-size:11px;font-weight:500;display:flex}.field-input,.field-select,.field-textarea{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);transition:border-color .15s var(--ease);-webkit-appearance:none;padding:8px 10px;font-family:inherit;font-size:13px}.field-input:focus,.field-select:focus,.field-textarea:focus{border-color:var(--accent);background:var(--surface);outline:none}.field-textarea{resize:vertical;min-height:64px;font-family:var(--font-body)}.field-select{background-image:url("data:image/svg+xml;utf8,<svg 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.btn-text{display:none}.btn-icon-only-mobile{justify-content:center;width:36px;height:36px;padding:8px}.modal{border-radius:var(--radius-md);max-height:calc(100dvh - 20px)}.modal-backdrop{padding:10px}.toolbar{width:56px}.tool-btn{width:48px;padding:6px 2px;font-size:9px}.tool-btn-label{font-size:9px}}.fab{right:16px;bottom:calc(16px + env(safe-area-inset-bottom));background:var(--primary);width:56px;height:56px;color:var(--bg);z-index:35;cursor:pointer;transition:transform .15s var(--ease), background .15s var(--ease);border:none;border-radius:50%;justify-content:center;align-items:center;display:none;position:fixed;box-shadow:0 6px 18px #2a1f1247}.fab:active{transform:scale(.92)}@media (width<=900px){.fab{display:flex}body.has-open-panel-mobile .fab{bottom:calc(75dvh + 16px)}}.mobile-status-bar{background:var(--surface-translucent);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--border);height:48px;color:var(--text-soft);z-index:30;pointer-events:none;-webkit-user-select:none;user-select:none;padding:0 16px;padding-bottom:env(safe-area-inset-bottom);justify-content:space-between;align-items:center;font-size:12px;display:none;position:fixed;bottom:0;left:64px;right:0}@media (width<=900px){.mobile-status-bar{height:calc(48px + env(safe-area-inset-bottom));display:flex}}.mobile-status-bar-left{align-items:center;gap:8px;display:flex}.mobile-status-pill{background:var(--bg-soft);border:1px solid var(--border);color:var(--text-soft);font-variant-numeric:tabular-nums;border-radius:999px;align-items:center;gap:4px;padding:2px 8px;font-size:11px;display:inline-flex}.mobile-status-pill.pppoe{background:var(--accent);color:var(--bg);border-color:var(--accent);font-weight:600}.mobile-status-tip{color:var(--text-muted);font-size:11px;font-style:italic}@media (width<=900px){.canvas-wrap{padding-bottom:calc(48px + env(safe-area-inset-bottom))}}.connect-banner{top:calc(var(--header-h) + env(safe-area-inset-top) + 8px);background:var(--accent);color:var(--bg);box-shadow:var(--shadow-md);z-index:50;animation:banner-in .2s var(--ease-out);border-radius:999px;align-items:center;gap:8px;padding:10px 18px;font-size:13px;font-weight:500;display:none;position:fixed;left:50%;transform:translate(-50%)}@media (width<=900px){.connect-banner{display:flex}}@keyframes banner-in{0%{opacity:0;transform:translate(-50%)translateY(-8px)}to{opacity:1;transform:translate(-50%)translateY(0)}}.add-hint{top:calc(var(--header-h) + env(safe-area-inset-top) + 60px);background:var(--primary);color:var(--bg);z-index:50;pointer-events:none;animation:banner-in .2s var(--ease-out);border-radius:999px;padding:8px 14px;font-size:12px;display:none;position:fixed;left:50%;transform:translate(-50%)}@media (width<=900px){.add-hint{display:flex}}@keyframes pppoe-pulse{0%,to{stroke-opacity:.85}50%{stroke-opacity:1}}.connection-line.is-pppoe{animation:2s ease-in-out infinite pppoe-pulse}.node-quick-actions{display:none}@media (width<=900px){.node.selected .node-quick-actions{z-index:5;flex-direction:row;gap:2px;display:flex;position:absolute;top:-8px;right:-8px}}.node-quick-btn{background:var(--accent);width:22px;height:22px;color:var(--bg);border:1.5px solid var(--bg);cursor:pointer;box-shadow:var(--shadow-sm);border-radius:50%;justify-content:center;align-items:center;padding:0;font-size:11px;font-weight:700;display:flex}.fab-picker-backdrop{-webkit-backdrop-filter:blur(4px);z-index:60;animation:fade-in .15s var(--ease);background:#2a1f1266;justify-content:center;align-items:flex-end;display:flex;position:fixed;inset:0}.fab-picker{background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-top:1px solid var(--border-strong);width:100%;max-width:480px;max-height:80dvh;animation:slide-up .22s var(--ease-out);flex-direction:column;display:flex;overflow:hidden;box-shadow:0 -8px 32px #2a1f1233}.fab-picker-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex;position:relative}.fab-picker-header:before{content:"";background:var(--border-strong);border-radius:2px;width:36px;height:4px;position:absolute;top:6px;left:50%;transform:translate(-50%)}.fab-picker-title{font-family:var(--font-display);color:var(--primary);padding-top:6px;font-size:18px;font-style:italic;font-weight:500}.fab-picker-body{padding:16px 16px calc(20px + env(safe-area-inset-bottom));-webkit-overflow-scrolling:touch;flex:1;overflow-y:auto}.fab-picker-group{margin-bottom:16px}.fab-picker-group-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:8px;padding-left:4px;font-size:10px;font-weight:600}.fab-picker-grid{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.fab-picker-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-soft);cursor:pointer;transition:all .12s var(--ease);flex-direction:column;justify-content:center;align-items:center;gap:4px;min-height:76px;padding:12px 4px;font-size:11px;display:flex}.fab-picker-item:active{background:var(--bg-soft);transform:scale(.96)}.fab-picker-item-icon{background:var(--surface);border:1px solid var(--border-strong);border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;display:flex}@media 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