:root{--color-bg: #f6f7f4;--color-surface: #ffffff;--color-text: #182024;--color-muted: #607078;--color-border: #d9ded7;--color-border-soft: #e7eae5;--color-amber: #c5902f;--color-amber-text: #7a561f;--color-red: #b83d35;--color-red-text: #8d302a;--color-green: #71956f;--color-green-text: #2f6b3c;--font-family-base: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-base: 13px;--line-height-base: 1.4;--space-1: 4px;--space-2: 6px;--space-3: 8px;--space-4: 10px;--space-5: 12px;--space-6: 14px;--space-7: 18px;--radius-sm: 5px;--radius-md: 6px;--sidebar-width: 244px}*{box-sizing:border-box}html{font-size:var(--font-size-base);line-height:var(--line-height-base)}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-family-base)}button,select,input{font:inherit}button,select{border:1px solid #bfc7c1;border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);padding:var(--space-2) var(--space-3)}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}h1,h2,p{margin:0}h1,h2{font-weight:650}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) minmax(0,1fr);min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;display:flex;width:var(--sidebar-width);flex-direction:column;border-right:1px solid var(--color-border);background:var(--color-surface);padding:var(--space-7) var(--space-5)}.brand{display:grid;gap:var(--space-1);margin-bottom:var(--space-7)}.brand span,.screen-purpose,.topbar time,.muted,.failure{color:var(--color-muted)}.module-nav{display:grid;gap:var(--space-1)}.nav-item{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);min-height:32px;border-radius:var(--radius-sm);color:var(--color-text);padding:var(--space-2) 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