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var(--text-primary);--dim: var(--text-secondary);--mute: var(--text-muted);--color-text-primary: var(--text-primary);--color-text-secondary: var(--text-secondary);--color-text-muted: var(--text-muted);--color-text-disabled: var(--text-disabled);--color-border-default: var(--border);--color-border-hover: var(--border-strong);--color-border-active: var(--brand-border);--border2: var(--border-strong);--border-visible: rgba(255,255,255,.1);--border-edit: var(--brand-border);--blue: var(--info);--green: var(--success);--cyan: var(--accent-cyan);--magenta: var(--accent-violet);--red: var(--error);--warn: var(--warning);--gold: #ffd60a;--accent: var(--info);--danger: var(--error);--color-blue: var(--info);--color-blue-bg: var(--info-bg);--color-blue-border: var(--info-border);--color-green: var(--success);--color-green-bg: var(--success-bg);--color-green-border: var(--success-border);--color-cyan: var(--accent-cyan);--color-cyan-bg: rgba(34,211,238,.08);--color-cyan-border: 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var(--success-border);--color-cyan: var(--accent-cyan);--color-cyan-bg: rgba(8,145,178,.06);--color-cyan-border: rgba(8,145,178,.15);--color-magenta: var(--accent-violet);--color-magenta-bg: rgba(124,58,237,.06);--color-magenta-border: rgba(124,58,237,.15);--color-red: var(--error);--color-red-bg: var(--error-bg);--color-red-border: var(--error-border);--color-warn: var(--warning);--color-warn-bg: var(--warning-bg);--color-warn-border: var(--warning-border);--color-success: var(--success);--color-success-bg: var(--success-bg);--color-error: var(--error);--color-error-bg: var(--error-bg);--color-warning: var(--warning);--color-warning-bg: var(--warning-bg);--color-info: var(--info);--color-info-bg: var(--info-bg)}[data-theme=high-contrast]{--brand: #ff6b00;--brand-hover: #e55a00;--brand-active: #cc4f00;--brand-bg: rgba(255,107,0,.12);--brand-border: rgba(255,107,0,.35);--surface-page: #000000;--surface-card: #09090b;--surface-elevated: #18181b;--surface-hover: #27272a;--surface-overlay: 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0 0;z-index:15;transition:height .3s ease;display:flex;flex-direction:column;overflow:hidden;padding-bottom:env(safe-area-inset-bottom,0px)}.course-bottom-sheet{position:fixed;left:0;right:0;bottom:0;padding-bottom:env(safe-area-inset-bottom,0px)}.ctx-sheet.peek{height:40vh}.ctx-sheet.full{height:85vh}.ctx-sheet-handle{width:32px;height:3px;background:var(--text-muted);border-radius:3px;margin:8px auto;flex-shrink:0}.ctx-sheet-header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px 12px;border-bottom:1px solid var(--card-light);flex-shrink:0}.ctx-overlay{position:fixed;inset:0;background:#000000a6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:50;display:flex;align-items:center;justify-content:center;animation:ctx-overlay-in .25s ease}.ctx-overlay-card{width:100%;max-height:100vh;background:var(--card);border:1px solid var(--card-light);border-radius:14px 14px 0 0;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 48px #0006;position:fixed;bottom:0;left:0;right:0;padding-bottom:env(safe-area-inset-bottom,0px)}.ctx-overlay-header{display:flex;align-items:flex-start;justify-content:space-between;padding:20px;border-bottom:1px solid var(--card-light);flex-shrink:0}.ctx-overlay-title-wrap{display:flex;gap:10px;align-items:flex-start}.ctx-overlay-icon{color:var(--primary);flex-shrink:0;margin-top:2px}.ctx-overlay-title{font-size:18px;font-weight:700}.ctx-overlay-subtitle{font-size:12px;font-family:SF Mono,Fira Code,monospace;color:var(--text-muted);margin-top:2px}.ctx-overlay-body{flex:1;overflow-y:auto;padding:20px}.ctx-overlay-footer{display:flex;justify-content:space-between;padding:12px 20px;border-top:1px solid var(--card-light);flex-shrink:0}@keyframes ctx-overlay-in{0%{opacity:0;transform:translateY(20px) scale(.97)}to{opacity:1;transform:none}}@media(min-width:768px){.ctx-panel{display:flex}.ctx-image-wrap.panel-open{margin-right:436px}.ctx-dot{width:22px;height:22px;min-width:22px;min-height:22px}.ctx-overlay-card{width:min(640px,95vw);max-height:90vh;border-radius:12px;position:static;bottom:auto;left:auto;right:auto;padding-bottom:0}.ctx-sheet{display:none}}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg);padding:20px}.login-card{background:var(--card);border:1px solid var(--card-light);border-radius:var(--radius);padding:40px 32px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:16px}.login-logo{display:flex;align-items:center;gap:10px;justify-content:center;color:var(--primary);font-size:20px;font-weight:700;margin-bottom:8px}.login-card label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.login-card input{background:var(--bg);border:1px solid var(--card-light);color:var(--text);padding:10px 12px;border-radius:6px;font-size:14px;outline:none}.login-card input:focus{border-color:var(--primary)}.login-card button{background:var(--primary);color:#fff;border:none;padding:12px;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;margin-top:4px}.login-card button:disabled{opacity:.6;cursor:not-allowed}.login-card .login-remember{flex-direction:row;align-items:center;gap:8px;cursor:pointer;font-size:14px;text-transform:none;letter-spacing:normal}.login-card .login-remember input[type=checkbox]{width:auto;padding:0;border:none;border-radius:0;background:none;accent-color:var(--primary);cursor:pointer}.login-card .login-remember span{color:var(--text-secondary)}.login-error{background:var(--color-red-bg);color:var(--danger);padding:10px 12px;border-radius:6px;font-size:13px;text-align:center}.btn-cert{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border:none;background:#ff6b001a;color:var(--brand);border-radius:7px;font-size:13px;font-weight:500;font-family:inherit;cursor:pointer;transition:background .15s;margin-top:12px}.btn-cert:disabled{opacity:.5;cursor:not-allowed}.btn-cert svg{width:14px;height:14px;flex-shrink:0}.circuit-layout{display:flex;flex-direction:column;height:calc(100vh - var(--topbar-height, 52px));margin:-20px;overflow:hidden}.circuit-map{height:40vh;flex:none;min-width:0}.circuit-map .leaflet-container{height:100%;background:var(--bg, #09090b)}.circuit-sidebar{width:100%;flex:1;display:flex;flex-direction:column;background:var(--card, #18181b);border-left:1px solid var(--card-light, #27272a);overflow-y:auto}.circuit-breadcrumb{padding:12px 16px 0;display:flex;align-items:center}.circuit-sec-chips{display:flex;flex-wrap:wrap;gap:6px;padding:10px 14px;flex-shrink:0}.circuit-sec-chip{padding:4px 12px;min-height:44px;border-radius:100px;border:2px solid var(--chip-color, var(--primary, #ff6b00));background:transparent;color:var(--chip-color, var(--primary, #ff6b00));font-size:11px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .15s;font-family:inherit;display:flex;align-items:center}.circuit-sec-chip.on{background:var(--chip-color, var(--primary, #ff6b00));color:#fff}.circuit-controls{display:flex;align-items:center;gap:8px;padding:10px 16px;flex-shrink:0}.circuit-lang-toggle{display:flex;border:1px solid var(--card-light, #27272a);border-radius:6px;overflow:hidden}.circuit-lang-btn{padding:4px 12px;min-height:44px;border:none;background:transparent;color:var(--text-muted, #71717a);font-size:11px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .12s;display:flex;align-items:center}.circuit-lang-btn.active{background:var(--primary, #ff6b00);color:#fff}.circuit-train-toggle{display:flex;align-items:center;gap:6px;padding:5px 12px;border:1px solid var(--card-light, #27272a);border-radius:6px;background:transparent;color:var(--text-muted, #71717a);font-size:11px;font-weight:600;font-family:inherit;cursor:pointer;margin-left:auto;transition:all .12s}.circuit-train-toggle.active{background:#06d6a01a;border-color:var(--success, #06d6a0);color:var(--success, #06d6a0)}.circuit-filter-bar{display:flex;gap:6px;padding:0 16px 8px;flex-shrink:0}.circuit-fchip{padding:3px 10px;border-radius:12px;font-size:10px;font-weight:600;text-transform:uppercase}.circuit-fchip-check{background:#06d6a01f;color:var(--success, #06d6a0)}.circuit-fchip-radio{background:#3b82f61f;color:var(--info, #3b82f6)}.circuit-fchip-callout{background:#ff6b001f;color:var(--primary, #ff6b00)}.circuit-fchip-note{background:#f59e0b1f;color:var(--warning, #f59e0b)}.circuit-fchip-checklist{background:#06d6a01f;color:var(--success, #06d6a0)}.circuit-fchip-atc{background:#6366f11f;color:#6366f1}.circuit-fchip-config{background:#8b5cf61f;color:#8b5cf6}.circuit-fchip-instrument{background:#06b6d41f;color:#06b6d4}.circuit-fchip-lookout{background:#f973161f;color:#f97316}.circuit-fchip-hotspot{background:#ef44441f;color:#ef4444}.circuit-fchip-tip{background:#f59e0b1f;color:var(--warning, #f59e0b)}.circuit-progress{display:flex;align-items:center;gap:10px;padding:0 16px 10px;flex-shrink:0}.circuit-progress-text{font-family:JetBrains Mono,monospace;font-size:12px;font-weight:600;color:var(--text-secondary, #a1a1aa);min-width:36px}.circuit-progress-bar{flex:1;height:4px;background:var(--card-light, #27272a);border-radius:2px;overflow:hidden}.circuit-progress-fill{height:100%;background:var(--primary, #ff6b00);border-radius:2px;transition:width .3s ease}.circuit-wp-list{flex:1;overflow-y:auto;padding:0 12px;min-height:0}.circuit-wp-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:6px;cursor:pointer;transition:background .1s}.circuit-wp-item.active{background:#ff6b0014}.circuit-wp-num{width:26px;height:26px;border-radius:50%;border:2px solid rgba(255,107,0,.5);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:var(--text-secondary, #a1a1aa);flex-shrink:0;background:transparent;transition:all .15s}.circuit-wp-num.active{background:var(--primary, #ff6b00);border-color:var(--primary, #ff6b00);color:#fff;box-shadow:0 0 12px #ff6b0059}.circuit-wp-num.done{background:var(--success, #06d6a0);border-color:var(--success, #06d6a0);color:#fff;font-size:12px}.circuit-wp-info{flex:1;min-width:0}.circuit-wp-name{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.circuit-wp-sub{font-size:11px;color:var(--text-muted, #71717a)}.circuit-wp-alt{font-family:JetBrains Mono,monospace;font-size:10px;color:var(--text-muted, #71717a);flex-shrink:0}.circuit-detail-panel{border-top:1px solid var(--card-light, #27272a);padding:14px 16px;flex-shrink:0;max-height:40%;overflow-y:auto}.circuit-detail-header{display:flex;align-items:center;gap:10px;margin-bottom:12px}.circuit-params{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:12px}.circuit-param{padding:6px 8px;border-radius:6px;background:var(--bg, #09090b);text-align:center}.circuit-param-label{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted, #71717a);margin-bottom:2px}.circuit-param-value{font-family:JetBrains Mono,monospace;font-size:13px;font-weight:600}.circuit-param.alt .circuit-param-value{color:var(--info, #3b82f6)}.circuit-param.spd .circuit-param-value{color:var(--success, #06d6a0)}.circuit-param.flaps .circuit-param-value{color:var(--warning, #f59e0b)}.circuit-param.hdg .circuit-param-value{color:var(--primary, #ff6b00)}.circuit-train-hidden{background:var(--bg, #09090b);border:1px dashed var(--card-light, #27272a);border-radius:8px;padding:16px;text-align:center;margin-bottom:12px}.circuit-train-prompt{font-size:13px;color:var(--text-muted, #71717a);margin-bottom:12px;line-height:1.5}.circuit-reveal-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border:1px solid var(--primary, #ff6b00);border-radius:6px;background:#ff6b001a;color:var(--primary, #ff6b00);font-size:13px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .12s}.circuit-revealed-badge{font-size:11px;font-weight:600;color:var(--success, #06d6a0);margin-bottom:8px}.circuit-actions{display:flex;flex-direction:column;gap:6px}.circuit-action{display:flex;gap:10px;padding:8px 10px;border-radius:6px;background:var(--bg, #09090b);font-size:12px}.circuit-action-icon{font-size:14px;flex-shrink:0;line-height:1.4}.circuit-action-content{flex:1;min-width:0}.circuit-action-type{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted, #71717a);margin-bottom:2px}.circuit-action-text{color:var(--text, #e4e4e7);line-height:1.4}.circuit-action-detail{color:var(--text-secondary, #a1a1aa);font-size:11px;line-height:1.4;margin-top:2px}.circuit-action-hl{background:#ff6b000f;border-left-width:3px}.circuit-action-check{border-left:2px solid var(--success, #06d6a0)}.circuit-action-radio{border-left:2px solid var(--info, #3b82f6)}.circuit-action-callout{border-left:2px solid var(--primary, #ff6b00)}.circuit-action-note{border-left:2px solid var(--warning, #f59e0b)}.circuit-action-checklist{border-left:2px solid var(--success, #06d6a0)}.circuit-action-atc{border-left:2px solid #6366f1}.circuit-action-config{border-left:2px solid #8b5cf6}.circuit-action-instrument{border-left:2px solid #06b6d4}.circuit-action-lookout{border-left:2px solid #f97316}.circuit-action-hotspot{border-left:2px solid #ef4444}.circuit-action-tip{border-left:2px solid var(--warning, #f59e0b)}.circuit-action-check .circuit-action-icon{color:var(--success, #06d6a0)}.circuit-action-radio .circuit-action-icon{color:var(--info, #3b82f6)}.circuit-action-callout .circuit-action-icon{color:var(--primary, #ff6b00)}.circuit-action-note .circuit-action-icon{color:var(--warning, #f59e0b)}.circuit-action-checklist .circuit-action-icon{color:var(--success, #06d6a0)}.circuit-action-atc .circuit-action-icon{color:#6366f1}.circuit-action-config .circuit-action-icon{color:#8b5cf6}.circuit-action-instrument .circuit-action-icon{color:#06b6d4}.circuit-action-lookout .circuit-action-icon{color:#f97316}.circuit-action-hotspot .circuit-action-icon{color:#ef4444}.circuit-action-tip .circuit-action-icon{color:var(--warning, #f59e0b)}.circuit-nav{display:flex;gap:8px;padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--card-light, #27272a);flex-shrink:0}.circuit-nav-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border:1px solid var(--card-light, #27272a);border-radius:6px;background:transparent;color:var(--text-secondary, #a1a1aa);font-size:12px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .12s}.circuit-nav-btn:disabled{opacity:.4;cursor:not-allowed}.circuit-nav-btn.primary{background:var(--primary, #ff6b00);border-color:var(--primary, #ff6b00);color:#fff}.circuit-toast{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom,0px));left:50%;transform:translate(-50%);background:var(--card, #18181b);border:1px solid var(--info, #3b82f6);color:var(--text, #e4e4e7);padding:10px 20px;border-radius:8px;font-size:13px;font-weight:500;z-index:9999;box-shadow:0 4px 20px #0006;animation:circuit-toast-in .3s ease}@keyframes circuit-toast-in{0%{opacity:0;transform:translate(-50%) translateY(10px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(min-width:900px){.circuit-layout{flex-direction:row}.circuit-map{height:auto;flex:1}.circuit-sidebar{width:380px;flex-shrink:0;flex:none;overflow:hidden}}.hub-toast-container{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom,0px));left:50%;transform:translate(-50%);z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}.hub-toast{padding:10px 20px;border-radius:8px;font-size:13px;font-weight:500;box-shadow:0 4px 20px #0006;animation:hub-toast-in .3s ease;cursor:pointer;pointer-events:auto;max-width:420px;text-align:center}.hub-toast-error{background:var(--card, #18181b);border:1px solid var(--error, #ef4444);color:var(--error, #ef4444)}.hub-toast-warning{background:var(--card, #18181b);border:1px solid var(--warning, #f59e0b);color:var(--warning, #f59e0b)}.hub-toast-success{background:var(--card, #18181b);border:1px solid var(--success, #06d6a0);color:var(--success, #06d6a0)}.hub-toast-info{background:var(--card, #18181b);border:1px solid var(--info, #3b82f6);color:var(--text, #e4e4e7)}@keyframes hub-toast-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.hub-error-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;color:var(--text-muted, #71717a);text-align:center}.hub-error-state p{font-size:14px;max-width:400px;line-height:1.5}.card-clickable:active{border-color:var(--primary);transform:scale(.99)}.quiz-option:active{border-color:var(--primary);background:var(--color-accent-bg, rgba(255,107,0,.04))}.btn-primary:active{background:var(--primary-hover)}.btn-ghost:active{background:var(--card)}.mobile-drawer-link:active{background:var(--card);color:var(--text)}.block-nav-back:active,.block-nav-chip:active,.hotspot-legend-item:active{border-color:var(--primary)}.circuit-nav-btn:active{opacity:.8}.circuit-sec-chip:active{opacity:.7}@media(hover:hover){a:hover{color:var(--primary-hover)}.app-rail-logo:hover{background:var(--card)}.app-rail-item:hover:after{opacity:1}.app-rail-item:hover{background:var(--color-accent-bg, rgba(255,107,0,.08))}.app-rail-section.secondary .app-rail-item:hover,.mobile-drawer-link:hover{background:var(--card);color:var(--text)}.card-clickable:hover{border-color:var(--primary);transform:translateY(-1px)}.btn-primary:hover{background:var(--primary-hover)}.hotspot-zone:hover{border-color:var(--brand);background:transparent;box-shadow:0 0 12px #ff6b004d}.hotspot-label:hover{transform:translate(-50%,-50%) scale(1.2);box-shadow:0 4px 14px #00000080}.hotspot-label:hover .hotspot-tooltip{display:block}.hotspot-legend-item:hover{border-color:var(--primary);background:#6366f11a}.quiz-option:hover{border-color:var(--primary)}.block-nav-back:hover{color:var(--text);border-color:var(--primary);background:var(--bg-light)}.block-nav-chip:hover{color:var(--text);border-color:var(--primary);background:var(--color-accent-bg, rgba(255,107,0,.1))}.breadcrumb a:hover,.ctx-breadcrumb a:hover{color:var(--text)}.ctx-dot:hover .ctx-dot-tooltip{display:block}.ctx-dropdown-toggle:hover{background:#0009}.ctx-dropdown-item:hover,.ctx-panel-close:hover{background:var(--bg-light);color:var(--text)}.ctx-panel-related-item:hover{border-color:var(--primary);color:var(--text)}.login-card button:hover{background:var(--primary-hover)}.btn-cert:hover{background:#ff6b002e}.circuit-sec-chip:hover{opacity:.75}.circuit-wp-item:hover{background:#ffffff08}.circuit-reveal-btn:hover{background:#ff6b002e}.circuit-nav-btn:hover:not(:disabled){color:var(--text, 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