:root{--bg: #f4f6f9;--surface: #ffffff;--surface-2: #f8fafc;--border: #e2e8f0;--border-strong: #cbd5e1;--ink: #0f172a;--ink-2: #334155;--muted: #64748b;--muted-2: #94a3b8;--brand: #0f766e;--brand-ink: #0d5c55;--brand-soft: #ccfbf1;--accent: #1e40af;--accent-soft: #dbeafe;--cement: #475569;--metakaolin: #0f766e;--limestone: #b45309;--water: #2563eb;--ok: #15803d;--ok-soft: #dcfce7;--warn: #b45309;--warn-soft: #fef3c7;--err: #b91c1c;--err-soft: #fee2e2;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 4px 16px rgba(15, 23, 42, .06);--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: "SFMono-Regular", ui-monospace, "Cascadia Code", Menlo, Consolas, 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