:root{--bg: #f4f6f9;--surface: #ffffff;--surface-2: #f0f2f6;--border: #e4e8ef;--border-strong: #cfd6e0;--text: #1a1f2b;--text-dim: #5b6472;--text-faint: #8a93a3;--accent: #2f6fe0;--accent-soft: rgba(47, 111, 224, .1);--coupon: #b56a0c;--klaviyo: #7242c8;--status-ok: #1f9d63;--status-warn: #b9860d;--status-muted: #8a93a3;--radius: 12px;--radius-sm: 8px;--shadow: 0 6px 20px rgba(23, 38, 66, .08);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color-scheme:light}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font-family:inherit;font-size:inherit}.app{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:60px;border-bottom:1px solid 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var(--border);border-radius:var(--radius);padding:12px 16px;margin-bottom:20px}.sync-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px}.sync-providers{display:inline-flex;gap:8px}.provider-pill{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;border:1px solid var(--border-strong)}.provider-pill .provider-dot{width:8px;height:8px;border-radius:50%}.provider-pill.on .provider-dot{background:var(--status-ok)}.provider-pill.off{color:var(--text-faint)}.provider-pill.off .provider-dot{background:var(--status-muted)}.sync-right{display:flex;align-items:center;gap:12px;justify-self:end}.sync-summary{font-size:13px;color:var(--text-dim)}.sync-error{grid-column:1 / -1;margin:0}.sync-results{grid-column:1 / -1;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:6px 16px;border-top:1px solid 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.section-desc{color:var(--text-dim);margin:0 0 16px;font-size:13px}table.cost-table{width:100%;border-collapse:collapse}table.cost-table th,table.cost-table td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:13px}table.cost-table th{color:var(--text-faint);font-weight:600;text-transform:uppercase;font-size:11px;letter-spacing:.04em}.cost-input{width:120px;padding:6px 10px}.mapping-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.mapping-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;background:var(--surface-2)}.mapping-card h4{margin:0 0 10px;display:flex;align-items:center;justify-content:space-between;gap:8px}.chip{display:inline-flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border-strong);border-radius:999px;padding:4px 6px 4px 12px;font-size:12px;margin:0 6px 6px 0}.chip button{background:none;border:none;color:var(--text-faint);cursor:pointer;font-size:14px;line-height:1;padding:2px 4px;border-radius:4px}.chip button:hover{color:#d64545}.add-row{display:flex;gap:8px;margin-top:10px}.add-row .text-input{flex:1;padding:6px 10px}.btn{background:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:var(--radius-sm);font-weight:600;cursor:pointer}.btn:hover{filter:brightness(1.08)}.btn:disabled{opacity:.5;cursor:default}.btn.ghost{background:var(--surface-2);border:1px solid var(--border-strong);color:var(--text)}.btn.small{padding:6px 12px;font-size:13px}.coef-row{display:flex;align-items:center;gap:12px}.coef-input{width:100px}.saved-flash{color:var(--status-ok);font-size:13px}.empty{color:var(--text-faint);font-size:13px;font-style:italic}.loading{color:var(--text-dim);padding:40px;text-align:center}.banner-error{background:#d6454514;border:1px solid rgba(214,69,69,.35);color:#b3261e;padding:10px 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