:root{--bg: #eef3fb;--card: rgba(255, 255, 255, .94);--text: #122033;--muted: #5d6b82;--border: #d9e4f2;--primary: #0f4cbd;--primary-dark: #0b3a92;--danger: #b42318;--success: #027a48;--shadow: 0 18px 48px rgba(15, 23, 42, .1)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;background:radial-gradient(circle at top left,rgba(15,76,189,.12),transparent 34%),linear-gradient(180deg,#f8fbff 0%,var(--bg) 100%);color:var(--text);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit}.page{max-width:1240px;margin:0 auto;padding:28px 20px 56px}.page-header{margin-bottom:24px}.eyebrow{margin:0 0 8px;font-size:12px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:var(--primary)}.page-header h1{margin:0 0 10px;font-size:clamp(34px,4.8vw,54px);line-height:1;letter-spacing:-.04em}.page-copy{max-width:720px;margin:0;color:var(--muted);line-height:1.6}.tab-list{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}.tab-button{min-width:240px;padding:16px 18px;border:1px solid var(--border);border-radius:18px;background:#ffffffd6;color:var(--text);cursor:pointer;display:flex;flex-direction:column;gap:4px;text-align:left;box-shadow:0 10px 28px #0f172a0d;transition:transform .12s ease,border-color .12s ease,background .12s ease,box-shadow .12s ease}.tab-button:hover{transform:translateY(-1px);border-color:#bad0f2;box-shadow:0 14px 32px #0f172a14}.tab-button.active{border-color:transparent;background:linear-gradient(135deg,#0f4cbd,#2d74f4);color:#fff;box-shadow:0 18px 36px #0f4cbd3d}.tab-label{font-size:15px;font-weight:800}.tab-caption{font-size:13px;color:inherit;opacity:.8;line-height:1.5}.panel{display:block}.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:24px;align-items:stretch;margin-bottom:24px}.hero-card,.card{background:var(--card);border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hero-card{padding:30px;background:linear-gradient(135deg,#fffffffa,#ebf3ff)}.hero-card h2,.card h2{margin:0 0 8px;font-size:26px;letter-spacing:-.03em}.hero-card p,.card p,.muted{color:var(--muted);line-height:1.6}.card{padding:20px;margin-bottom:20px}.metric{padding:24px;border-radius:22px;background:linear-gradient(180deg,#10203d,#091324);color:#fff;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 20px 40px #09132442}.metric-label{font-size:13px;font-weight:700;letter-spacing:.02em;color:#c7d3ea}.metric-value{margin-top:12px;font-size:clamp(34px,4vw,46px);font-weight:800;line-height:1}.metric-copy{margin:18px 0 0;color:#d6def0;line-height:1.6}.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.file-input{width:min(260px,100%)}.field-grid,.mapping-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.config-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.split-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:16px;align-items:start}.stack{display:flex;flex-direction:column;gap:10px}.inline-controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.grow{flex:1 1 180px}.start-row-input{width:120px}.top-gap{margin-top:16px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:14px}.section-label{font-weight:800}.field-chip{display:inline-flex;margin-left:8px;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700;vertical-align:middle}.field-chip.required{background:#dbeafe;color:#1d4ed8}.field-chip.optional{background:#edf2f7;color:#475467}label{display:block;margin-bottom:8px;font-size:14px;font-weight:700}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:14px;padding:11px 13px;background:#fff;color:var(--text)}textarea{min-height:200px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 5px #0f4cbd1f}button{border:none;border-radius:14px;padding:11px 15px;background:var(--primary);color:#fff;font-weight:800;cursor:pointer;transition:transform .12s ease,background .12s ease,box-shadow .12s ease}button:hover{transform:translateY(-1px);background:var(--primary-dark);box-shadow:0 10px 20px #0f4cbd29}button.secondary{background:#fff;color:var(--text);border:1px solid var(--border);box-shadow:none}button.secondary:hover{background:#f8fbff}.notice{margin-top:16px;padding:13px 15px;border-radius:16px;border:1px solid #fed7aa;background:#fff7ed;color:#9a3412;line-height:1.5}code{padding:1px 6px;border-radius:999px;background:#e6eefc;color:#0f4cbd;font-size:.95em}.config-card,.info-card{border:1px solid var(--border);border-radius:18px;background:#f8fbffe0;padding:16px}.config-card h3{margin:0 0 14px;font-size:18px}.warning-total{align-self:center;padding:8px 12px;border-radius:999px;background:#fff7ed;color:#9a3412;font-size:13px;font-weight:800}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:18px;background:#fff}.tall-table{max-height:520px}table{width:100%;border-collapse:collapse;min-width:920px}th,td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left;white-space:nowrap;font-size:14px}th{position:sticky;top:0;z-index:1;background:#f8fbff;color:#32425e;font-weight:800}td.number,th.number{text-align:right}tr.excluded{opacity:.5}.preview-input{min-width:120px}.negative{color:var(--danger);font-weight:800}.positive{color:var(--success);font-weight:800}.footer-total{padding:10px 2px 0;font-weight:800;color:var(--text)}@media (max-width: 980px){.hero,.field-grid,.config-grid,.mapping-grid,.split-grid{grid-template-columns:1fr}.tab-button{min-width:0;width:100%}.file-input,.start-row-input{width:100%}table{min-width:100%}}