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var(--color-bg-secondary);--surface-overlay: #ffffff;--focus-ring: 0 0 0 3px color-mix(in srgb, var(--color-primary) 35%, transparent);--focus-ring-offset: 2px;--color-scrim: rgba(0, 0, 0, .5);--color-bg-hover: #f1f5f9;--color-border-hover: #cbd5e1;--color-bg-active: #e2e8f0;--color-shadow-hover: rgba(0, 0, 0, .15);--color-scrollbar-thumb: #94a3b8;--color-scrollbar-thumb-hover: #64748b;--panel-bg: var(--color-bg-secondary);--color-bg-quaternary: #e2e8f0;--color-border-dark: #cbd5e1;--vertex-a1: #d55e00;--vertex-a2: #e69f00;--vertex-b1: #0072b2;--vertex-b2: #56b4e9;--vertex-c1: #009e73;--vertex-c2: #cc79a7;--app-header-height: 70px}[data-theme=dark]{--color-primary: #a78bfa;--color-primary-hover: #c4b5fd;--color-primary-light: #2e1065;--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-text-primary: #f1f5f9;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-text-inverse: #1a1a1a;--color-border: #334155;--color-border-light: 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h1{margin:0;font-size:1.5rem;font-weight:var(--font-weight-semibold);letter-spacing:-.025em;color:var(--color-text-primary)}.header-eyebrow{margin:0;font-size:var(--font-size-sm);color:var(--color-text-secondary)}.header-info{font-size:.875rem;color:var(--color-text-secondary);font-style:italic}.header-nav{display:flex;align-items:center;gap:var(--spacing-lg);flex-wrap:wrap}.nav-group{display:flex;flex-direction:column;gap:var(--spacing-2xs)}.nav-group--primary{justify-content:center}.nav-group__label{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-secondary);padding:0 var(--spacing-sm)}.nav-group__items{display:flex;gap:var(--spacing-xs);flex-wrap:wrap}.nav-link{padding:var(--spacing-xs) var(--spacing-md);color:var(--color-text-secondary);text-decoration:none;border-radius:var(--border-radius-md);transition:all 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h1{font-size:1.25rem}.logo{width:28px;height:28px}.header-nav{flex-direction:column;align-items:stretch;gap:var(--spacing-md);width:100%}.nav-group__items{flex-direction:column}.nav-link{width:100%}.main-content{padding:.5rem;gap:.5rem}}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media print{.control-panel,.statistics-panel{display:none}.app-header{background:#fff;color:#000;border-bottom:2px solid black}.visualization-container{width:100%;max-width:none}}.control-panel{width:100%;display:flex;flex-direction:column;gap:.5rem;overflow-y:auto;max-height:calc(100vh - 100px);padding:.5rem 1.25rem .5rem .5rem}.control-panel::-webkit-scrollbar{width:6px}.control-panel::-webkit-scrollbar-track{background:var(--color-bg-tertiary, 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