:root{--bg: #f6f7f8;--surface: #ffffff;--surface-2: #f2f3f5;--surface-3: #eaecef;--border: #e3e5e9;--text: #2b2f36;--muted: #697077;--subtle: #9aa1a9;--accent: #24272c;--accent-hover: #33373d;--accent-contrast: #ffffff;--ink: #17191d;--brand: #17695a;--brand-soft: #e7f1ee;--border-strong: #d3d7dc;--focus-ring: rgba(23, 105, 90, .25);--focus-ring-soft: rgba(23, 105, 90, .12);--grade-a-bg: #e9f7ef;--grade-a-fg: #217a4b;--grade-b-bg: #fdf4e3;--grade-b-fg: #96700f;--grade-c-bg: #fdeaea;--grade-c-fg: #b04a4a;--grade-d-bg: #fbeddf;--grade-d-fg: #9c561d;--grade-e-bg: #f0e9f8;--grade-e-fg: #66429a;--grade-f-bg: #f5e5e9;--grade-f-fg: #872438;--success: #3f9d6e;--warning: #c98f2b;--danger: #d96b6b;--radius-sm: 10px;--radius-md: 14px;--radius-lg: 18px;--sidebar-width: 244px;--topbar-height: 64px;--shadow-soft: 0 12px 32px rgba(23, 26, 31, .06);--shadow-raised: 0 16px 40px rgba(23, 26, 31, 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var(--border)}.calendar-selection{font-size:12px;color:var(--muted)}.calendar-actions{display:flex;gap:6px}@media (max-width: 1060px){.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}.dash-content{transition:opacity .15s ease}.dash-content.loading{opacity:.55;pointer-events:none}.page-error{margin-bottom:14px;padding:12px 14px;border:1px solid var(--grade-c-fg);background:var(--grade-c-bg);color:var(--grade-c-fg);border-radius:var(--radius-sm);font-size:14px}.empty-list{color:var(--muted);font-size:14px;padding:16px 0 4px}.chart-card .empty-list{padding:2px 0 0}.empty-list 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