:root{--bg:#f6f5f1;--surface:#fff;--text:#1c1d1f;--muted:#5d6166;--border:#d9d8d2;--accent:#126b55;--accent-soft:#e5f2ed;--focus:#1f5fd1;--error:#b42318;--error-soft:#fdecea;--radius:14px;--shadow:0 1px 2px #0000000d, 0 4px 16px #0000000a;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#16181b;--surface:#1f2226;--text:#eceef0;--muted:#a3a8ae;--border:#3a3f45;--accent:#4cc9a2;--accent-soft:#1d3a31;--focus:#7aa7ff;--error:#ff8a80;--error-soft:#3d2120;--shadow:none}}*,:before,:after{box-sizing:border-box}body{background:var(--bg);color:var(--text);margin:0}.app{max-width:960px;margin:0 auto;padding:20px 16px 40px}.app-header{margin-bottom:16px}h1{letter-spacing:-.01em;margin:0;font-size:1.6rem;line-height:1.2}.tagline{color:var(--muted);margin:4px 0 0}.layout{gap:16px;display:grid}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 16px}.section-heading{margin:0 0 12px;font-size:1.05rem}.field{min-width:0;margin-bottom:16px}.field:last-child{margin-bottom:0}.field-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}label{margin-bottom:6px;font-weight:600;display:block}.input-wrap{position:relative}.affix{color:var(--muted);pointer-events:none;position:absolute;top:50%;left:14px;transform:translateY(-50%)}input{width:100%;min-height:48px;font:inherit;font-variant-numeric:tabular-nums;color:var(--text);background:var(--surface);border:1.5px solid var(--border);appearance:none;border-radius:10px;padding:10px 14px;font-size:1.125rem}.has-prefix input{padding-left:30px}input::placeholder{color:var(--muted);opacity:.7}input:focus-visible{outline:3px solid var(--focus);outline-offset:1px;border-color:var(--focus)}input[aria-invalid=true]{border-color:var(--error)}.hint{color:var(--muted);margin:6px 0 0;font-size:.875rem}.error{color:var(--error);background:var(--error-soft);border-radius:8px;margin:6px 0 0;padding:6px 10px;font-size:.9rem;font-weight:500}.error[hidden]{display:none}.results-empty{color:var(--muted);margin:0}.breakdown{margin:0}.row{border-bottom:1px solid var(--border);justify-content:space-between;gap:12px;padding:8px 0;display:flex}.row dt{color:var(--muted)}.row dd{font-variant-numeric:tabular-nums;margin:0}.row.total{border-bottom:none;font-size:1.15rem;font-weight:700}.row.total dt{color:var(--text)}.sub-heading{margin:16px 0 8px;font-size:.95rem}.shares{gap:8px;margin:0;padding:0;list-style:none;display:grid}.shares li{border:1px solid var(--border);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 12px;padding:12px 14px;display:flex}.shares li.payer{background:var(--accent-soft);border-color:#0000}.share-amount{font-variant-numeric:tabular-nums;font-size:1.1rem;font-weight:700}.collect{background:var(--accent);color:var(--surface);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:4px 12px;margin-top:16px;padding:14px;display:flex}.collect-label{font-weight:600}.collect-amount{font-variant-numeric:tabular-nums;font-size:1.25rem;font-weight:800}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (width>=768px){.app{padding:40px 24px}h1{font-size:2rem}.layout{grid-template-columns:1fr 1fr;align-items:start;gap:24px}.card{padding:24px}.results{position:sticky;top:24px}}