.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,#0b2745 0%,var(--bg) 60%),var(--bg)}.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border-2);border-radius:16px;padding:32px;box-shadow:0 24px 60px #00000073}.auth-brand h1{font-size:1.15rem;margin:0;font-weight:700}.auth-brand p{margin:2px 0 18px;font-size:.76rem;color:var(--muted)}.auth-card label{display:block;font-size:.8rem;color:var(--muted);margin:14px 0 6px}.auth-card input{width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--border-2);background:var(--panel-2);color:var(--text);font-size:.95rem}.auth-card input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.auth-card button{width:100%;margin-top:22px;padding:12px;border:0;border-radius:10px;cursor:pointer;background:linear-gradient(135deg,var(--cyan),var(--accent));color:#04101f;font-weight:700;font-size:.95rem}.auth-card button:disabled{opacity:.6}.auth-err{margin-top:8px;padding:10px 12px;border-radius:9px;font-size:.85rem;background:#ef44441f;border:1px solid rgba(239,68,68,.4);color:#fca5a5}.auth-foot{margin-top:18px;font-size:.72rem;color:var(--muted);text-align:center}:root{--bg: #030f20;--bg-2: #071323;--panel: #0a1830;--panel-2: #0e2138;--panel-3: #122a47;--border: #16263f;--border-2: #21385a;--text: #e8eef7;--muted: #7d8ba3;--faint: #4d5e78;--accent: #3b82f6;--accent-2: #60a5fa;--accent-soft: rgba(59,130,246,.16);--cyan: #38bdf8;--green: #34d399;--red: #f87171;--amber: #fbbf24;--violet: #a78bfa;--teal: #2dd4bf;--p-arp: #fbbf24;--p-icmp: #38bdf8;--p-dhcp: #34d399;--p-dns: #a78bfa;--p-tcp: #3b82f6;--p-http: #60a5fa;--p-nat: #f59e0b;--p-ike: #f472b6;--p-esp: #ef4444;--p-deny: #f87171;--p-fw: #22d3ee;--p-svc: #2dd4bf;--p-wifi: #a855f7;--mono: "JetBrains Mono", ui-monospace, monospace;--sans: "Inter", system-ui, sans-serif;--sidebar-w: 250px;--insp-w: 336px;--dock-h: 152px}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:14px}body{overflow:hidden}.proto-arp{--c: var(--p-arp)}.proto-icmp{--c: var(--p-icmp)}.proto-dhcp{--c: var(--p-dhcp)}.proto-dns{--c: var(--p-dns)}.proto-tcp{--c: var(--p-tcp)}.proto-http{--c: var(--p-http)}.proto-nat{--c: var(--p-nat)}.proto-ike{--c: var(--p-ike)}.proto-esp{--c: var(--p-esp)}.proto-deny{--c: var(--p-deny)}.proto-fw{--c: var(--p-fw)}.proto-svc{--c: var(--p-svc)}.proto-wifi{--c: var(--p-wifi)}.app{display:flex;height:100vh;position:relative}.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:var(--bg-2);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0;overflow:hidden;transition:flex-basis .2s ease,width .2s ease,transform .22s ease}.app:not(.sidebar-open){--sidebar-w: 0px}.app:not(.sidebar-open) .sidebar{border-right:none}.app:not(.inspector-open){--insp-w: 0px}.app:not(.inspector-open) .inspector{border-left:none}.brand{display:flex;align-items:center;gap:11px;padding:16px 18px;border-bottom:1px solid var(--border)}.brand-logo{display:flex}.brand-text{display:flex;flex-direction:column;line-height:1.2}.brand-name{font-weight:700;font-size:16px;letter-spacing:.2px}.brand-sub{font-size:11px;color:var(--muted)}.sidebar-scroll{flex:1 1 auto;overflow-y:auto;padding:14px}.nav-section{margin-bottom:20px}.nav-label{font-size:10.5px;text-transform:uppercase;letter-spacing:1.2px;color:var(--faint);margin-bottom:9px;font-weight:600}.palette{display:grid;gap:7px}.palette-item{display:flex;align-items:center;gap:10px;padding:9px 11px;background:var(--panel);border:1px solid var(--border);border-radius:10px;cursor:grab;-webkit-user-select:none;user-select:none;transition:border-color .12s,background .12s,transform .06s}.palette-item:hover{border-color:var(--accent);background:var(--panel-2)}.palette-item:active{transform:scale(.98)}.palette-label{font-size:13px;font-weight:500}.dev-glyph{width:26px;height:26px;border-radius:7px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px #ffffff1f}.dev-glyph svg{width:17px;height:17px;display:block}.dev-pc{background:linear-gradient(135deg,#38bdf8,#2563eb)}.dev-switch{background:linear-gradient(135deg,#34d399,#059669)}.dev-router{background:linear-gradient(135deg,#fbbf24,#d97706)}.dev-server{background:linear-gradient(135deg,#a78bfa,#7c3aed)}.dev-firewall{background:linear-gradient(135deg,#f87171,#b91c1c)}.dev-internet{background:linear-gradient(135deg,#22d3ee,#0e7490)}.tool-row{display:grid;gap:6px}.tool{display:flex;align-items:center;gap:9px;text-align:left;width:100%;background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:9px;padding:9px 11px;cursor:pointer;font-size:13px;font-family:var(--sans)}.tool:hover{border-color:var(--border-2);background:var(--panel-2)}.tool.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-2);box-shadow:inset 2px 0 0 var(--accent)}.tool-ic{font-size:14px;width:16px;text-align:center}.run-form{display:grid;gap:9px}.run-form label{display:flex;flex-direction:column;font-size:11px;color:var(--muted);gap:4px}.env{padding:14px;border-top:1px solid var(--border);background:var(--bg)}.env-row{display:flex;justify-content:space-between;font-size:12px;padding:3px 0}.env-k{color:var(--muted)}.env-v{color:var(--text);font-weight:500;text-align:right}.env-desc{font-size:11.5px;color:var(--muted);line-height:1.5;margin:8px 0}select,input[type=text],input[type=number]{background:var(--panel-2);color:var(--text);border:1px solid var(--border-2);border-radius:8px;padding:7px 9px;font-family:var(--sans);font-size:13px;width:100%}select:focus,input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.btn{background:var(--panel-2);color:var(--text);border:1px solid var(--border-2);border-radius:8px;padding:7px 12px;font-size:13px;cursor:pointer;transition:background .12s,border-color .12s;white-space:nowrap}.btn:hover{background:var(--panel-3);border-color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2)}.btn-ghost{background:transparent}.btn-block{width:100%}.btn:disabled{opacity:.4;cursor:not-allowed}a.btn{display:inline-flex;align-items:center;gap:4px;text-decoration:none}.user-chip{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--muted, #7e93b3);white-space:nowrap}.act-logout{color:var(--text)}.act-logout:hover{border-color:var(--accent)}.main{flex:1 1 auto;display:flex;flex-direction:column;min-width:0;min-height:0}.topbar{flex:0 0 auto;min-height:56px;display:flex;align-items:center;flex-wrap:wrap;gap:8px 12px;padding:8px 14px;background:var(--bg-2);border-bottom:1px solid var(--border)}.topbar-left{display:flex;align-items:center;gap:9px;flex:1 1 0;min-width:0}.topbar-center{display:flex;align-items:center;gap:10px;flex:0 0 auto}.topbar-right{display:flex;align-items:center;gap:8px;flex:1 1 0;justify-content:flex-end}.brand-mini{border-radius:6px;flex:0 0 auto}.app-name{font-weight:700;font-size:15px;white-space:nowrap}.sep{color:var(--faint)}.scenario-pick{min-width:0}.scenario-pick select{background:var(--panel-2);padding:6px 10px;border-radius:8px;min-width:150px;max-width:240px;font-weight:500}.icon-btn{width:34px;height:34px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;background:var(--panel);border:1px solid var(--border);border-radius:8px;color:var(--text);cursor:pointer;font-size:15px;transition:border-color .12s,background .12s}.icon-btn:hover{border-color:var(--accent)}.icon-btn.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-2)}.btn .label{display:inline}.more-wrap{position:relative;display:none}.more-menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--panel);border:1px solid var(--border-2);border-radius:10px;padding:6px;display:flex;flex-direction:column;gap:2px;min-width:190px;z-index:60;box-shadow:0 12px 32px #00000080}.more-menu[hidden]{display:none}.more-menu button{text-align:left;background:transparent;border:none;color:var(--text);padding:9px 11px;border-radius:7px;font-size:13px;cursor:pointer}.more-menu button:hover{background:var(--panel-2)}.sim-status{display:flex;align-items:center;gap:7px;font-size:12.5px;font-weight:500;color:var(--muted);padding:5px 10px;border-radius:20px;background:var(--panel);border:1px solid var(--border)}.sim-status .dot{width:8px;height:8px;border-radius:50%;background:var(--faint)}.sim-status.running{color:var(--green)}.sim-status.running .dot{background:var(--green);box-shadow:0 0 8px var(--green);animation:pulse 1.4s infinite}.sim-status.paused{color:var(--amber)}.sim-status.paused .dot{background:var(--amber)}.sim-status.done{color:var(--accent-2)}.sim-status.done .dot{background:var(--accent-2)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.step-counter{font-family:var(--mono);font-size:12px;color:var(--muted)}.transport{display:flex;align-items:center;gap:4px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:3px}.ctrl{background:transparent;border:none;color:var(--text);width:32px;height:30px;border-radius:7px;cursor:pointer;font-size:13px}.ctrl:hover{background:var(--panel-3)}.ctrl-primary{background:var(--accent);color:#fff}.ctrl-primary:hover{background:var(--accent-2)}.ctrl:disabled{opacity:.4;cursor:not-allowed}.speed{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--muted)}.speed input{width:80px}.divider{width:1px;height:24px;background:var(--border-2)}.workspace{flex:1 1 auto;display:flex;min-height:0;min-width:0}.stage{flex:1 1 auto;display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--border)}.stage-head{flex:0 0 auto;height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;border-bottom:1px solid var(--border);background:var(--bg-2)}.stage-title{display:flex;gap:4px}.tab{font-size:13px;padding:6px 12px;border-radius:8px;color:var(--muted);cursor:default}.tab.active{color:var(--text);background:var(--panel);font-weight:600;box-shadow:inset 0 -2px 0 var(--accent)}.legend{display:flex;gap:6px}.legend .lg{font-size:10px;font-family:var(--mono);padding:2px 7px;border-radius:5px;color:var(--c);background:color-mix(in srgb,var(--c) 14%,transparent);border:1px solid color-mix(in srgb,var(--c) 35%,transparent)}.lg-arp{--c: var(--p-arp)}.lg-icmp{--c: var(--p-icmp)}.lg-dhcp{--c: var(--p-dhcp)}.lg-dns{--c: var(--p-dns)}.lg-tcp{--c: var(--p-tcp)}.lg-http{--c: var(--p-http)}.lg-nat{--c: var(--p-nat)}.lg-ike{--c: var(--p-ike)}.lg-esp{--c: var(--p-esp)}.lg-deny{--c: var(--p-deny)}.lg-svc{--c: var(--p-svc)}.lg-wifi{--c: var(--p-wifi)}.stage-tools{display:flex;gap:4px}.stage-tools .ctrl{width:30px;height:28px;background:var(--panel);border:1px solid var(--border)}.stage-tools .ctrl:hover{border-color:var(--accent)}.canvas-wrap{position:relative;flex:1 1 auto;min-height:0;overflow:hidden;background:radial-gradient(circle at 1px 1px,#102036 1px,transparent 0) 0 0 / 24px 24px,var(--bg)}.canvas{width:100%;height:100%;display:block}.canvas-empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;color:var(--muted);text-align:center;padding:24px}.canvas-empty p{max-width:340px;line-height:1.6}.node{cursor:pointer}.node .node-box{fill:var(--panel-2);stroke:var(--border-2);stroke-width:1.5}.node.selected .node-box{stroke:var(--accent);stroke-width:2.5}.node.active .node-box{stroke:var(--cyan);stroke-width:2.5;filter:drop-shadow(0 0 7px rgba(56,189,248,.7))}.node-label{fill:var(--text);font-size:12px;font-weight:600;text-anchor:middle;pointer-events:none}.node-ip{fill:var(--muted);font-size:10px;font-family:var(--mono);text-anchor:middle;pointer-events:none}.node-glyph-pc{fill:var(--cyan)}.node-glyph-switch{fill:var(--green)}.node-glyph-router{fill:var(--amber)}.node-glyph-server{fill:var(--violet)}.node-glyph-firewall{fill:var(--red)}.node-glyph-internet{fill:var(--p-fw)}.node-glyph-ap,.node-glyph-wlc{fill:var(--p-wifi)}.link-line{stroke:var(--border-2);stroke-width:2.6;fill:none;stroke-linecap:round}.link-line.media-copper-straight{stroke:var(--green)}.link-line.media-copper-crossover{stroke:var(--green);stroke-dasharray:8 5}.link-line.media-fiber{stroke:var(--amber);stroke-width:4;filter:drop-shadow(0 0 4px rgba(251,191,36,.55))}.link-line.media-serial{stroke:var(--violet);stroke-width:3;stroke-dasharray:11 5 2 5}.link-line.media-wifi{stroke:var(--p-wifi);stroke-width:2.4;stroke-dasharray:2 6;opacity:.85}.link-line.invalid{stroke:var(--red)!important;stroke-width:2.6!important;stroke-dasharray:1.5 5!important}.link-line.hot{stroke:var(--accent)!important;stroke-width:4.5!important;stroke-dasharray:none!important;filter:drop-shadow(0 0 6px rgba(59,130,246,.7))}.link-line.stp-blocked{stroke:var(--amber)!important;stroke-width:2.4!important;stroke-dasharray:3 6!important;opacity:.65;filter:none}.link-line:hover{stroke:var(--accent)}.link-badge{fill:var(--muted);font-size:9px;font-family:var(--mono);text-anchor:middle;pointer-events:none}.link-badge.bad{fill:var(--red);font-weight:700}.port-label{fill:var(--accent-2);font-family:var(--mono);font-size:9px;text-anchor:middle;dominant-baseline:middle;paint-order:stroke;stroke:var(--bg);stroke-width:3px;stroke-linejoin:round;pointer-events:none}.cable-legend{position:absolute;top:12px;left:12px;z-index:6;background:#071323eb;border:1px solid var(--border-2);border-radius:10px;padding:9px 11px;box-shadow:0 6px 18px #0006}.cl-title{font-size:10px;text-transform:uppercase;letter-spacing:.8px;color:var(--faint);font-weight:600;margin-bottom:6px}.cl-row{display:flex;align-items:center;gap:9px;padding:2.5px 0;font-size:11.5px;color:var(--muted)}.cl-line{width:34px;height:10px;flex:0 0 auto;overflow:visible}.packet-dot{stroke:#02070f;stroke-width:1;filter:drop-shadow(0 0 4px var(--c))}.packet-arp{--c: var(--p-arp);fill:var(--p-arp)}.packet-icmp{--c: var(--p-icmp);fill:var(--p-icmp)}.packet-dhcp{--c: var(--p-dhcp);fill:var(--p-dhcp)}.packet-dns{--c: var(--p-dns);fill:var(--p-dns)}.packet-tcp{--c: var(--p-tcp);fill:var(--p-tcp)}.packet-http{--c: var(--p-http);fill:var(--p-http)}.packet-nat{--c: var(--p-nat);fill:var(--p-nat)}.packet-ike{--c: var(--p-ike);fill:var(--p-ike)}.packet-esp{--c: var(--p-esp);fill:var(--p-esp)}.packet-deny{--c: var(--p-deny);fill:var(--p-deny)}.packet-fw{--c: var(--p-fw);fill:var(--p-fw)}.packet-svc{--c: var(--p-svc);fill:var(--p-svc)}.packet-wifi{--c: var(--p-wifi);fill:var(--p-wifi)}.packet-label{fill:var(--text);font-size:9px;font-family:var(--mono);text-anchor:middle}.inspector{flex:0 0 var(--insp-w);width:var(--insp-w);background:var(--panel);border-left:1px solid var(--border);overflow-y:auto;overflow-x:hidden;padding:14px;display:flex;flex-direction:column;transition:flex-basis .2s ease,width .2s ease,transform .22s ease}.insp-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.insp-head h2{margin:0;font-size:14px;font-weight:600}.insp-live{font-size:10px;font-family:var(--mono);padding:2px 8px;border-radius:20px;background:var(--panel-2);color:var(--muted);border:1px solid var(--border)}.insp-live.on{color:var(--green);border-color:color-mix(in srgb,var(--green) 40%,transparent);background:color-mix(in srgb,var(--green) 14%,transparent)}.panel-hint{font-size:12px;color:var(--muted);margin:0;line-height:1.5}.insp-summary{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;margin-bottom:14px}.sum-row{display:flex;justify-content:space-between;gap:8px;font-size:12px;padding:3px 0}.sum-row .sum-k{color:var(--muted)}.sum-row .sum-v{font-family:var(--mono);color:var(--text);text-align:right;word-break:break-all}.insp-sub{font-size:10.5px;text-transform:uppercase;letter-spacing:1px;color:var(--faint);font-weight:600;margin-bottom:9px}.osi-stack{display:flex;flex-direction:column;gap:6px}.osi-layer{border:1px solid var(--border);border-radius:9px;overflow:hidden;opacity:.45;transition:opacity .2s,border-color .2s,box-shadow .2s;background:var(--panel-2)}.osi-layer.filled{opacity:1}.osi-layer.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),0 4px 14px #3b82f62e}.osi-head{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;font-size:11px}.osi-num{font-weight:700;color:var(--accent-2);margin-right:7px;font-family:var(--mono)}.osi-name{font-weight:600}.osi-proto{font-family:var(--mono);font-size:10px;color:var(--cyan)}.osi-fields{padding:6px 10px;font-family:var(--mono);font-size:10.5px;line-height:1.6;border-top:1px solid var(--border)}.osi-fields .f{display:flex;justify-content:space-between;gap:8px}.osi-fields .f .k{color:var(--muted)}.osi-fields .f .v{color:var(--text);text-align:right;word-break:break-all}.osi-fields .changed .v{color:var(--amber)}.osi-empty{padding:6px 10px;font-size:10.5px;color:var(--muted);font-style:italic;border-top:1px solid var(--border)}.osi-L7 .osi-head{border-left:3px solid var(--cyan)}.osi-L6 .osi-head{border-left:3px solid #818cf8}.osi-L5 .osi-head{border-left:3px solid var(--accent)}.osi-L4 .osi-head{border-left:3px solid var(--teal)}.osi-L3 .osi-head{border-left:3px solid var(--accent-2)}.osi-L2 .osi-head{border-left:3px solid var(--green)}.osi-L1 .osi-head{border-left:3px solid var(--faint)}.dock{flex:0 0 auto;height:var(--dock-h);display:flex;flex-direction:column;background:var(--bg-2);border-top:1px solid var(--border);transition:height .2s ease}.dock-resize{flex:0 0 8px;height:8px;cursor:row-resize;display:flex;align-items:center;justify-content:center;touch-action:none}.dock-resize:before{content:"";width:48px;height:3px;border-radius:999px;background:var(--border-2);transition:background .15s ease,width .15s ease}.dock-resize:hover:before{background:var(--accent);width:64px}.dock.resizing{transition:none;-webkit-user-select:none;user-select:none}.dock.resizing .dock-resize:before{background:var(--accent-2);width:64px}.dock.collapsed .dock-resize{display:none}.dock-toggle{display:flex;align-items:center;gap:10px;width:100%;height:34px;flex:0 0 34px;background:transparent;border:none;color:var(--muted);cursor:pointer;padding:0 14px;font-size:10.5px;text-transform:uppercase;letter-spacing:1px;font-weight:600}.dock-toggle:hover{color:var(--text)}.dock-toggle .chev{transition:transform .2s ease;font-size:13px}.dock-mini{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--accent-2);text-transform:none;letter-spacing:0;font-weight:500}.dock-body{flex:1 1 auto;min-height:0;display:grid;grid-template-columns:250px 1fr;gap:12px;padding:0 14px 12px}.dock.collapsed{height:34px}.dock.collapsed .dock-body{display:none}.dock.collapsed .chev{transform:rotate(-90deg)}.dock-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column;min-height:0}.dock-title{font-size:10.5px;text-transform:uppercase;letter-spacing:1px;color:var(--faint);font-weight:600;margin-bottom:10px}.dock-sim{gap:0}.sim-head{display:flex;align-items:flex-start;gap:10px}.sim-emoji{font-size:22px;line-height:1.1;flex:0 0 auto;transition:transform .2s ease}.sim-head-txt{min-width:0}.sim-headline{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.2px}.sim-narr{font-size:12px;color:var(--muted);line-height:1.45;margin-top:2px}.sim-progress{height:6px;border-radius:999px;background:var(--panel-2);border:1px solid var(--border);overflow:hidden;margin:11px 0 10px}.sim-progress-bar{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .35s ease}.dock-sim.is-done .sim-progress-bar{background:linear-gradient(90deg,var(--green),var(--teal))}.sim-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}.sim-chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;color:var(--muted);background:var(--panel-2);border:1px solid var(--border);border-radius:999px;padding:3px 9px}.sim-chip b{color:var(--accent-2);font-weight:700}.sim-chip .chip-ico{font-size:12px;opacity:.9}.sim-log{overflow-y:auto;font-size:12.5px;padding-right:4px;flex:1 1 auto;min-height:0}.sim-log .log-empty{color:var(--muted);font-style:italic}.log-entry{display:flex;align-items:flex-start;gap:8px;padding:6px 9px;margin-bottom:4px;background:var(--panel-2);border:1px solid var(--border);border-radius:8px;line-height:1.45}.log-entry.current{border-color:var(--accent);background:var(--accent-soft)}.le-dot{width:8px;height:8px;border-radius:50%;background:var(--c, var(--muted));flex:0 0 auto;margin-top:5px}.le-node{font-family:var(--mono);font-weight:600;color:var(--accent-2)}.le-tag{font-family:var(--mono);font-size:9.5px;padding:1px 6px;border-radius:5px;color:var(--c, var(--muted));background:color-mix(in srgb,var(--c, var(--muted)) 14%,transparent);flex:0 0 auto}.modal{position:fixed;inset:0;background:#02070fb3;display:flex;align-items:center;justify-content:center;z-index:50;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal[hidden]{display:none}.modal-card{background:var(--panel);border:1px solid var(--border-2);border-radius:14px;width:min(460px,92vw);max-height:86vh;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px #00000080}.modal-head{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border)}.modal-head h3{margin:0;font-size:15px}.modal-close{background:none;border:none;color:var(--muted);font-size:24px;cursor:pointer;line-height:1}.modal-close:hover{color:var(--text)}.modal-body{padding:18px;overflow-y:auto}.modal-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}.cfg-field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}.cfg-field label{font-size:11px;color:var(--muted)}.cfg-section-title{font-size:10.5px;text-transform:uppercase;letter-spacing:.8px;color:var(--accent-2);margin:16px 0 9px;font-weight:600}.cfg-table{width:100%;font-family:var(--mono);font-size:11px;border-collapse:collapse}.cfg-table th,.cfg-table td{text-align:left;padding:5px 7px;border-bottom:1px solid var(--border)}.cfg-table th{color:var(--muted);font-weight:500}.cfg-note{font-size:11.5px;color:var(--muted);line-height:1.5}.cfg-toggle{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text);margin:10px 0 6px;cursor:pointer}.cfg-toggle input{width:auto;flex:none;accent-color:var(--accent)}.cli-card{width:min(820px,95vw);height:min(78vh,640px);display:flex;flex-direction:column}.api-card{width:min(960px,96vw);max-height:90vh}.api-body{flex:1 1 auto;min-height:0;overflow-y:auto}.api-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0}.api-line{display:flex;gap:8px;margin-bottom:8px}.api-line select{flex:0 0 auto;width:auto}.api-line input{flex:1 1 0;width:auto;min-width:0;font-family:var(--mono);font-size:12.5px}.api-bl{display:block;font-size:11.5px;color:var(--muted);margin:6px 0 4px}#apiBody{width:100%;min-height:90px;resize:vertical;background:#07101f;border:1px solid var(--border-2);border-radius:8px;color:#c7e0ff;font-family:var(--mono);font-size:12.5px;padding:8px 10px}.api-examples{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px;font-size:11.5px;color:var(--muted)}.api-examples button{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:999px;padding:3px 9px;font-size:11px;cursor:pointer}.api-examples button:hover{border-color:var(--accent);color:var(--accent-2)}.api-resp{display:flex;flex-direction:column;min-height:0}.api-status{font-family:var(--mono);font-weight:700;font-size:12.5px;padding:4px 10px;border-radius:6px 6px 0 0;background:var(--panel-2);border:1px solid var(--border-2);border-bottom:none}.api-status.ok{color:#34d399}.api-status.warn{color:var(--amber)}.api-status.bad{color:#f87171}.api-out{flex:1 1 auto;margin:0;overflow:auto;max-height:340px;background:#07101f;border:1px solid var(--border-2);border-radius:0 6px 6px;padding:10px 12px;font-family:var(--mono);font-size:12px;line-height:1.5;color:#c7e0ff;white-space:pre-wrap;word-break:break-word}.api-help{font-size:12px;color:var(--text);border-top:1px solid var(--border);padding-top:10px}.api-help ul{margin:6px 0;padding-left:18px}.api-help li{margin:3px 0}.api-help code,.api-body code{font-family:var(--mono);font-size:11.5px;color:var(--accent-2);background:var(--panel-2);padding:1px 5px;border-radius:4px}.fmt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:8px 0}.fmt-h{font-family:var(--mono);font-weight:700;font-size:12px;color:var(--accent-2);margin-bottom:4px}.fmt-code{margin:0;background:#07101f;border:1px solid var(--border-2);border-radius:8px;padding:9px 11px;font-family:var(--mono);font-size:11.5px;line-height:1.45;color:#c7e0ff;white-space:pre;overflow-x:auto}@media(max-width:760px){.api-grid,.fmt-grid{grid-template-columns:1fr}}.exam-card{width:min(820px,96vw);height:min(86vh,720px);display:flex;flex-direction:column}.exam-readiness{font-family:var(--mono);font-size:12.5px;color:var(--accent-2);padding:6px 16px;border-bottom:1px solid var(--border)}.exam-tabs{display:flex;gap:4px;padding:8px 14px 0;border-bottom:1px solid var(--border)}.exam-tab{background:none;border:none;border-bottom:2px solid transparent;color:var(--muted);padding:7px 12px;cursor:pointer;font-size:13px}.exam-tab.active{color:var(--text);border-bottom-color:var(--accent)}.exam-body{flex:1 1 auto;min-height:0;overflow-y:auto}.exam-pane{padding:4px 2px}.exam-dom{font-weight:700;font-size:13px;color:var(--accent-2);margin:14px 0 8px;padding-bottom:4px;border-bottom:1px dashed var(--border)}.exam-hint{font-size:12px;color:var(--muted);margin-bottom:10px}.quiz-q{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:11px 13px;margin-bottom:9px}.quiz-text{font-weight:600;font-size:13px;margin-bottom:7px}.quiz-opt{display:flex;align-items:center;gap:8px;padding:4px 7px;border-radius:7px;font-size:12.5px;cursor:pointer}.quiz-opt:hover{background:#ffffff08}.quiz-opt.correct{background:#34d39929;color:#6ee7b7}.quiz-opt.wrong{background:#f8717129;color:#fca5a5}.quiz-explain{display:none;font-size:11.5px;margin-top:6px;padding-left:7px;border-left:2px solid var(--border-2);color:var(--muted)}.quiz-explain.show{display:block}.quiz-explain.ok{border-color:#34d399}.quiz-explain.bad{border-color:#f87171}.quiz-actions{display:flex;gap:8px;margin:14px 0 6px;position:sticky;bottom:0;background:var(--panel);padding-top:8px}.lab-card{background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin-bottom:9px}.lab-card-head{display:flex;align-items:center;gap:8px;margin-bottom:5px}.lab-badge{background:var(--accent);color:#fff;border-radius:999px;font-size:10.5px;font-weight:700;padding:2px 8px}.lab-done{margin-left:auto;color:#6ee7b7;font-size:11.5px;font-weight:700}.lab-goal{font-size:12.5px;line-height:1.5;color:var(--text);margin:0 0 9px}.lab-bar{position:absolute;top:10px;left:50%;transform:translate(-50%);z-index:6;display:flex;align-items:center;gap:10px;max-width:min(760px,94%);background:#081222f2;border:1px solid var(--accent);border-radius:12px;padding:8px 12px;box-shadow:0 10px 30px #00000073}.lab-bar.ok{border-color:#34d399}.lab-bar-text{display:flex;flex-direction:column;min-width:0}.lab-bar-text strong{font-size:12.5px}.lab-bar-text span{font-size:11px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lab-bar-actions{display:flex;gap:5px;flex:0 0 auto}@media(max-width:640px){.lab-bar-text span{display:none}}.cli-screen{flex:1 1 auto;min-height:0;overflow-y:auto;background:#07101f;border-radius:0 0 12px 12px;padding:12px 14px;font-family:var(--mono);font-size:12.5px;line-height:1.5;color:#c7e0ff;cursor:text}.cli-line{white-space:pre-wrap;word-break:break-word}.cli-banner{color:#5fb0ff;margin-bottom:6px}.cli-echo{color:#e2e8f0}.cli-resp{color:#9ad0a0;margin-bottom:4px}.cli-inputline{display:flex;align-items:baseline;gap:6px}.cli-prompt{color:#5fb0ff;white-space:nowrap}.cli-inputline input{flex:1 1 auto;background:transparent;border:none;outline:none;color:#e2e8f0;font-family:var(--mono);font-size:12.5px;padding:0}.conn-hint{margin-top:10px;padding:8px 11px;border-radius:8px;font-size:12.5px;background:var(--panel-2)}.conn-hint.ok{color:var(--green);border:1px solid color-mix(in srgb,var(--green) 40%,transparent)}.conn-hint.bad{color:var(--red);border:1px solid color-mix(in srgb,var(--red) 40%,transparent)}.cfg-inline{display:flex;gap:6px;align-items:center;margin:8px 0 4px;flex-wrap:wrap}.cfg-inline input{flex:1 1 80px;min-width:60px}.btn-sm{padding:3px 9px;font-size:11px}.port-row{border:1px solid var(--border);border-radius:10px;padding:9px;margin-bottom:8px;background:var(--panel-2)}.port-head{display:flex;align-items:center;gap:8px;margin-bottom:7px}.port-name{font-family:var(--mono);font-size:12px;font-weight:600}.port-conn{font-size:10px;padding:1px 7px;border-radius:5px;background:var(--bg-2);color:var(--accent-2)}.port-link{font-size:11px;color:var(--muted);margin-left:auto}.port-ctrl{display:flex;gap:6px}.port-ctrl .cfg-field{margin:0;flex:1}.port-row-title{font-family:var(--mono);font-size:11.5px;color:var(--accent-2);margin:14px 0 7px}::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-thumb{background:var(--border-2);border-radius:5px}::-webkit-scrollbar-track{background:transparent}.site-box{fill:#38bdf80d;stroke:var(--border-2);stroke-width:1.5;stroke-dasharray:6 5}.site.collapsed .site-box{fill:var(--panel-2);stroke:var(--accent);stroke-dasharray:none}.site-label{fill:var(--accent-2);font-size:12px;font-weight:600;-webkit-user-select:none;user-select:none}.minimap{position:absolute;right:12px;bottom:12px;width:200px;height:130px;background:#071323eb;border:1px solid var(--border-2);border-radius:8px;cursor:pointer;box-shadow:0 6px 20px #0006}.mm-node{fill:var(--muted)}.mm-pc{fill:var(--cyan)}.mm-switch{fill:var(--green)}.mm-router{fill:var(--amber)}.mm-server{fill:var(--violet)}.mm-firewall{fill:var(--red)}.mm-internet{fill:var(--p-fw)}.mm-view{fill:#3b82f61f;stroke:var(--accent);stroke-width:1.5}.zone-badge{font-size:9.5px;font-family:var(--mono);padding:1px 7px;border-radius:5px;margin-left:auto}.zone-badge.ok{color:var(--green);background:color-mix(in srgb,var(--green) 16%,transparent)}.zone-badge.bad{color:var(--red);background:color-mix(in srgb,var(--red) 16%,transparent)}.cfg-check{display:flex;align-items:center;gap:8px;font-size:12.5px;margin-bottom:8px;cursor:pointer}.cfg-check input,.cfg-inline select{width:auto}.guide-card{width:min(1040px,95vw);height:min(86vh,880px);display:flex;flex-direction:column}.guide-layout{display:flex;flex:1 1 auto;min-height:0}.guide-nav{flex:0 0 188px;border-right:1px solid var(--border);padding:14px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:2px;background:var(--bg-2)}.guide-nav a{display:block;padding:8px 12px;border-radius:8px;font-size:13px;color:var(--muted);text-decoration:none;border-left:2px solid transparent}.guide-nav a:hover{background:var(--panel-2);color:var(--text)}.guide-nav a.active{background:var(--accent-soft);color:var(--accent-2);border-left-color:var(--accent);font-weight:600}.cable-guide{flex:1 1 auto;min-height:0;overflow-y:auto;position:relative;padding:20px 24px 44px}.guide-hero p{margin:0 0 6px;color:var(--muted);line-height:1.6}.guide-h{font-size:16px;margin:28px 0 6px;padding-bottom:7px;border-bottom:1px solid var(--border);color:var(--text)}.guide-h4{font-size:13px;text-transform:uppercase;letter-spacing:.8px;color:var(--accent-2);margin:22px 0 10px}.guide-p{color:var(--muted);line-height:1.6;margin:0 0 14px}.guide-note,.guide-warn,.guide-link{font-size:13px;line-height:1.55;border-radius:9px;padding:10px 13px;margin:12px 0}.guide-note{background:var(--panel);border:1px solid var(--border);color:var(--text)}.guide-warn{background:color-mix(in srgb,var(--amber) 12%,transparent);border:1px solid color-mix(in srgb,var(--amber) 40%,transparent);color:#fde68a}.guide-link{background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 40%,transparent);color:var(--accent-2)}.seg{display:inline-flex;gap:2px;background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:3px;margin-bottom:14px}.seg button{background:transparent;border:none;color:var(--muted);padding:6px 14px;border-radius:7px;cursor:pointer;font-size:12.5px;font-family:var(--sans)}.seg button.active{background:var(--accent);color:#fff;font-weight:600}.pinouts{display:grid;grid-template-columns:1fr 1fr auto;gap:18px;align-items:start;margin-bottom:8px}.pinout{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px}.pinout-head{font-weight:700;font-family:var(--mono);color:var(--accent-2);margin-bottom:10px;text-align:center;letter-spacing:1px}.pin-row{display:grid;grid-template-columns:20px 1fr 96px;align-items:center;gap:9px;margin-bottom:6px}.pin-n{font-family:var(--mono);font-size:11px;color:var(--muted);text-align:center}.wire{height:15px;border-radius:4px;box-shadow:inset 0 0 0 1px #ffffff2e}.pin-label{font-size:11px;color:var(--text)}.rj45-illu{display:flex;flex-direction:column;align-items:center;gap:6px}.illu-cap{font-size:10.5px;color:var(--faint);max-width:100px;text-align:center;line-height:1.4}.guide-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:8px 0 6px}.gcard{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:13px 15px}.gcard-h{font-weight:600;font-size:14px;margin-bottom:4px;display:flex;align-items:center;gap:8px}.gcard-h.sm{font-size:13px}.gcard-ends{font-family:var(--mono);font-size:11px;color:var(--accent-2);margin-bottom:8px}.gcard p{margin:0 0 6px;font-size:12.5px;line-height:1.5;color:var(--text)}.gcard-note{color:var(--muted)!important;font-size:11.5px!important}.guide-table{width:100%;border-collapse:collapse;margin:8px 0;font-size:13px}.guide-table th,.guide-table td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border)}.guide-table th{color:var(--muted);font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:.5px}.guide-table td{font-family:var(--mono);font-size:12px}.ip-mono{font-family:var(--mono);font-size:.92em;color:var(--accent-2);background:var(--accent-soft);padding:1px 6px;border-radius:5px}.calc-examples{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px;margin:8px 0 6px}.calc-ex .calc-goal{font-size:12.5px;color:var(--muted);margin:0 0 10px;line-height:1.5}.calc-steps{margin:0}.calc-steps li{font-family:var(--mono);font-size:12px}.subnet-calc{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin:8px 0 6px}.calc-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}.calc-form label{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted)}.calc-form input{font-family:var(--mono);font-size:14px;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--bg-2);color:var(--text)}.calc-form input:focus{outline:none;border-color:var(--accent)}.calc-quick{display:flex;flex-wrap:wrap;gap:6px;margin:11px 0 4px}.calc-quick button{font-family:var(--mono);font-size:12px;padding:4px 10px;border-radius:7px;border:1px solid var(--border);background:var(--bg-2);color:var(--muted);cursor:pointer}.calc-quick button:hover{border-color:var(--accent);color:var(--accent-2)}.calc-error{color:#f87171;font-size:13px;margin:10px 0 0}.calc-out{margin-top:12px}.calc-out td:last-child{color:var(--accent-2);font-weight:600}.encap{margin:10px 0 6px}.encap-box{border:1.5px solid var(--border-2);border-radius:10px;padding:10px 12px;background:var(--panel)}.encap-box .encap-box{margin-top:8px}.encap-tag{display:block;font-size:12px;font-weight:600;color:var(--text)}.encap-wrap{display:block;font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:2px}.encap-L2{border-color:color-mix(in srgb,var(--accent) 45%,var(--border))}.encap-L3{border-color:color-mix(in srgb,var(--cyan, #38bdf8) 50%,var(--border))}.encap-L4{border-color:color-mix(in srgb,#a78bfa 50%,var(--border))}.encap-L7{border-color:color-mix(in srgb,#34d399 50%,var(--border));background:var(--bg-2)}.pkt-diagram{margin:8px 0 14px}.pkt-ruler{display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:4px}.pkt-ruler span{font-family:var(--mono);font-size:10px;color:var(--muted)}.pkt-ruler span:nth-child(2),.pkt-ruler span:nth-child(4),.pkt-ruler span:nth-child(6),.pkt-ruler span:nth-child(8){text-align:right}.pkt-row{display:grid;grid-template-columns:repeat(32,1fr);gap:3px;margin-bottom:3px}.pkt-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:42px;padding:3px 4px;border:1px solid var(--border-2);border-radius:6px;background:var(--panel);text-align:center;overflow:hidden}.pkt-label{font-size:11px;font-weight:600;color:var(--text);line-height:1.15}.pkt-bits{font-family:var(--mono);font-size:9px;color:var(--muted);margin-top:2px}@media(max-width:640px){.pkt-label{font-size:9px}.pkt-bits{display:none}.pkt-cell{min-height:34px}}.frame-strip{display:flex;gap:3px;margin:8px 0 6px}.frame-seg{flex-basis:0;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;min-height:46px;padding:4px 5px;border:1px solid var(--border-2);border-radius:7px;background:var(--panel);overflow:hidden}.frame-name{font-size:11px;font-weight:600;color:var(--text);line-height:1.15}.frame-size{font-family:var(--mono);font-size:9px;color:var(--muted);margin-top:2px;white-space:nowrap}.frame-tag{border-color:var(--accent);background:var(--accent-soft)}.frame-tag .frame-name{color:var(--accent-2)}@media(max-width:640px){.frame-name{font-size:9px}.frame-size{display:none}}.steps{margin:6px 0 4px;padding-left:0;counter-reset:step;list-style:none}.steps li{position:relative;padding:8px 12px 8px 42px;margin-bottom:7px;background:var(--panel);border:1px solid var(--border);border-radius:9px;font-size:13px;line-height:1.5}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:10px;top:8px;width:22px;height:22px;border-radius:50%;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}.fiber-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.jacket{width:14px;height:14px;border-radius:4px;box-shadow:inset 0 0 0 1px #fff3;flex:0 0 auto}.fiber-specs{display:grid;grid-template-columns:1fr 1fr;gap:4px 10px;font-size:11.5px;margin-bottom:8px}.fiber-specs b{color:var(--muted);font-weight:500;margin-right:4px}.conn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:10px}.conn-card{display:flex;align-items:center;gap:11px;background:var(--panel);border:1px solid var(--border);border-radius:9px;padding:10px 13px;font-size:12px;color:var(--muted);line-height:1.45}.conn-txt{display:flex;flex-direction:column;gap:3px}.conn-name{font-family:var(--mono);font-weight:700;color:var(--accent-2)}.conn-ic{flex:0 0 auto;width:76px;height:44px;display:block}.conn-svg{width:76px;height:44px;display:block}.card-illu{display:flex;justify-content:center;margin:2px 0 9px}.map-svg{width:150px;height:78px;overflow:visible}.crimp-illu{margin:4px 0 14px}.crimp-figs{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.crimp-fig{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 10px 10px;text-align:center}.crimp-fig .cfig{width:100%;max-width:150px;height:auto;display:block;margin:0 auto 8px}.crimp-fig figcaption{font-size:12px;color:var(--text);line-height:1.4}.backdrop{position:fixed;inset:0;background:#02070f8c;z-index:44;-webkit-backdrop-filter:blur(1px);backdrop-filter:blur(1px)}.backdrop[hidden]{display:none}@media(max-width:1024px){.sidebar{position:fixed;top:0;bottom:0;left:0;z-index:48;width:280px;flex-basis:280px;border-right:1px solid var(--border-2);transform:translate(-100%);box-shadow:6px 0 30px #00000080}.app:not(.sidebar-open){--sidebar-w: 0px}.app.sidebar-open .sidebar{transform:none}.inspector{position:fixed;top:0;bottom:0;right:0;z-index:48;width:340px;flex-basis:340px;border-left:1px solid var(--border-2);transform:translate(100%);box-shadow:-6px 0 30px #00000080}.app.inspector-open .inspector{transform:none}.speed,.app-name,.sep,.btn.act-guide,.btn.act-save,.btn.act-load{display:none}.more-wrap{display:inline-block}.scenario-pick select{max-width:200px}}@media(max-width:640px){.topbar{padding:7px 10px;gap:6px}.step-counter{display:none}.topbar-left{gap:7px}.topbar-center{gap:6px}.sim-status{padding:5px 8px}.sim-status span:not(.dot){display:none}.stage-head{overflow:hidden}.legend,.cable-legend{display:none}.sidebar{width:86vw;flex-basis:86vw;max-width:320px}.inspector{width:88vw;flex-basis:88vw;max-width:360px}.dock-body{grid-template-columns:1fr}.dock-sim{display:none}.pinouts{grid-template-columns:1fr}.rj45-illu{display:none}.guide-layout{flex-direction:column}.guide-nav{flex-direction:row;flex:0 0 auto;overflow-x:auto;border-right:none;border-bottom:1px solid var(--border)}}