.k401-calculator{--k401-primary: #059669;--k401-primary-dark: #047857;--k401-primary-light: #10b981;--k401-secondary: #34d399;--k401-accent: #064e3b;--k401-bg: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);--k401-card-bg: #ffffff;--k401-text: #1f2937;--k401-text-muted: #6b7280;--k401-border: #a7f3d0;--k401-employer: #8b5cf6;--k401-growth: #f59e0b;font-family:system-ui,-apple-system,sans-serif;max-width:900px;margin:0 auto}.k401-header{text-align:center;margin-bottom:2rem}.k401-title{font-size:2rem;font-weight:800;color:var(--k401-accent);margin:0 0 .5rem}.k401-description{color:var(--k401-text-muted);font-size:1.1rem;margin:0}.k401-formula-section{background:var(--k401-bg);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--k401-border)}.k401-formula-title{font-size:1.1rem;font-weight:700;color:var(--k401-accent);margin:0 0 1rem;text-align:center}.k401-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}.k401-formula-card{background:var(--k401-card-bg);border-radius:12px;padding:1rem;text-align:center;box-shadow:0 2px 8px #0596691a}.k401-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--k401-primary);margin-bottom:.5rem}.k401-formula-math{font-size:1rem;color:var(--k401-text);overflow-x:auto}.k401-presets{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:1.5rem;padding:1rem;background:#d1fae5;border-radius:12px}.k401-presets-label{font-weight:600;color:var(--k401-accent);font-size:.9rem}.k401-presets-buttons{display:flex;flex-wrap:wrap;gap:.5rem}.k401-preset-btn{padding:.5rem 1rem;border:2px solid var(--k401-border);background:#fff;border-radius:8px;font-size:.85rem;font-weight:600;color:var(--k401-text);cursor:pointer;transition:all .2s ease}.k401-preset-btn:hover{border-color:var(--k401-primary);background:#ecfdf5}.k401-preset-btn.active{background:var(--k401-primary);border-color:var(--k401-primary);color:#fff}.k401-form{background:var(--k401-card-bg);border-radius:16px;padding:1.5rem;box-shadow:0 4px 20px #0596691a;margin-bottom:2rem}.k401-form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.5rem}.k401-input-group{display:flex;flex-direction:column;gap:.5rem}.k401-input-group label{font-size:.9rem;font-weight:600;color:var(--k401-text)}.k401-input-group input{padding:.75rem 1rem;border:2px solid #e5e7eb;border-radius:10px;font-size:1rem;transition:all .2s ease}.k401-input-group input:focus{outline:none;border-color:var(--k401-primary);box-shadow:0 0 0 3px #0596691a}.k401-buttons{display:flex;gap:1rem}.k401-calculate-btn{flex:1;padding:1rem;background:linear-gradient(135deg,var(--k401-primary) 0%,var(--k401-primary-light) 100%);color:#fff;border:none;border-radius:12px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease}.k401-calculate-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0596694d}.k401-reset-btn{padding:1rem 1.5rem;background:#f3f4f6;color:var(--k401-text-muted);border:none;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.k401-reset-btn:hover{background:#e5e7eb}.k401-results{background:var(--k401-card-bg);border-radius:16px;padding:1.5rem;box-shadow:0 4px 20px #0596691a;margin-bottom:2rem;border:2px solid var(--k401-border)}.k401-results-title{font-size:1.3rem;font-weight:700;color:var(--k401-accent);margin:0 0 1.5rem;text-align:center}.k401-limit-section{background:#f9fafb;border-radius:12px;padding:1rem;margin-bottom:1.5rem}.k401-limit-header{display:flex;justify-content:space-between;font-size:.9rem;font-weight:600;color:var(--k401-text);margin-bottom:.5rem}.k401-limit-bar{height:12px;background:#e5e7eb;border-radius:6px;overflow:hidden;margin-bottom:.5rem}.k401-limit-fill{height:100%;background:linear-gradient(90deg,var(--k401-primary) 0%,var(--k401-secondary) 100%);border-radius:6px;transition:width .5s ease}.k401-limit-footer{display:flex;justify-content:space-between;font-size:.85rem;color:var(--k401-text-muted)}.k401-results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-bottom:1.5rem}.k401-result-card{background:#f9fafb;border-radius:12px;padding:1rem;text-align:center}.k401-result-card.k401-result-primary{background:linear-gradient(135deg,var(--k401-primary) 0%,var(--k401-primary-light) 100%);grid-column:span 2}.k401-result-card.k401-result-primary .k401-result-label,.k401-result-card.k401-result-primary .k401-result-value{color:#fff}.k401-result-card.k401-highlight-you{background:linear-gradient(135deg,#ecfdf5,#d1fae5);border:2px solid var(--k401-primary)}.k401-result-card.k401-highlight-employer{background:linear-gradient(135deg,#f5f3ff,#ede9fe);border:2px solid var(--k401-employer)}.k401-result-card.k401-highlight-employer .k401-result-value{color:var(--k401-employer)}.k401-result-label{display:block;font-size:.8rem;color:var(--k401-text-muted);margin-bottom:.25rem}.k401-result-value{font-size:1.3rem;font-weight:700;color:var(--k401-accent)}.k401-result-card.k401-result-primary .k401-result-value{font-size:1.8rem}.k401-breakdown{background:#f9fafb;border-radius:12px;padding:1rem}.k401-breakdown-title{font-size:.9rem;font-weight:600;color:var(--k401-text);margin-bottom:.75rem;text-align:center}.k401-breakdown-bar{display:flex;height:32px;border-radius:8px;overflow:hidden;margin-bottom:.75rem}.k401-bar-segment{transition:width .5s ease}.k401-bar-yours{background:var(--k401-primary)}.k401-bar-employer{background:var(--k401-employer)}.k401-bar-growth{background:var(--k401-growth)}.k401-breakdown-legend{display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap}.k401-legend-item{display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:var(--k401-text-muted)}.k401-legend-color{width:12px;height:12px;border-radius:3px}.k401-legend-color.yours{background:var(--k401-primary)}.k401-legend-color.employer{background:var(--k401-employer)}.k401-legend-color.growth{background:var(--k401-growth)}.k401-content{margin-top:3rem}.k401-content-section{margin-bottom:2.5rem}.k401-content-section h2{font-size:1.5rem;font-weight:700;color:var(--k401-accent);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--k401-border)}.k401-content-section p{color:var(--k401-text);line-height:1.7;margin-bottom:1rem}.k401-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.k401-feature-card{background:var(--k401-bg);border-radius:12px;padding:1.25rem;text-align:center;border:1px solid var(--k401-border)}.k401-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.k401-feature-card h4{font-size:1rem;font-weight:700;color:var(--k401-accent);margin:0 0 .5rem}.k401-feature-card p{font-size:.9rem;color:var(--k401-text-muted);margin:0;line-height:1.5}.k401-tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.k401-tip-card{background:#ecfdf5;border-radius:12px;padding:1.25rem;border-left:4px solid var(--k401-primary)}.k401-tip-icon{font-size:1.5rem;display:block;margin-bottom:.5rem}.k401-tip-card h4{font-size:.95rem;font-weight:700;color:var(--k401-accent);margin:0 0 .5rem}.k401-tip-card p{font-size:.9rem;color:var(--k401-text-muted);margin:0;line-height:1.5}.k401-tips-list{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.k401-tip-item{display:flex;gap:1rem;padding:1.25rem;background:#ecfdf5;border-radius:12px;border:1px solid var(--k401-border)}.k401-tip-item .k401-tip-icon{font-size:1.75rem;flex-shrink:0;margin-bottom:0}.k401-tip-content h4{font-size:1rem;font-weight:700;color:var(--k401-accent);margin:0 0 .5rem}.k401-tip-content p{font-size:.95rem;color:var(--k401-text);margin:0;line-height:1.6}.k401-table-wrapper{overflow-x:auto;margin-top:1.5rem;border-radius:12px;border:1px solid var(--k401-border)}.k401-table{width:100%;border-collapse:collapse;font-size:.9rem}.k401-table th{background:var(--k401-bg);padding:1rem;text-align:left;font-weight:700;color:var(--k401-accent);border-bottom:2px solid var(--k401-border)}.k401-table td{padding:1rem;border-bottom:1px solid #f3f4f6;color:var(--k401-text)}.k401-table tr:last-child td{border-bottom:none}.k401-table tr:hover td{background:#ecfdf5}.k401-faq-list{display:flex;flex-direction:column;gap:.75rem;margin-top:1.5rem}.k401-faq-item{background:#ecfdf5;border-radius:12px;border:1px solid var(--k401-border);overflow:hidden}.k401-faq-item summary{padding:1rem 1.25rem;font-weight:600;color:var(--k401-accent);cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none}.k401-faq-item summary::-webkit-details-marker{display:none}.k401-faq-item summary:after{content:"+";font-size:1.5rem;font-weight:300;color:var(--k401-primary);transition:transform .3s ease}.k401-faq-item[open] summary:after{transform:rotate(45deg)}.k401-faq-item p{padding:0 1.25rem 1rem;margin:0;color:var(--k401-text);line-height:1.6}@media (max-width: 640px){.k401-title{font-size:1.5rem}.k401-formula-grid,.k401-form-grid{grid-template-columns:1fr}.k401-buttons{flex-direction:column}.k401-result-card.k401-result-primary{grid-column:span 1}.k401-results-grid{grid-template-columns:1fr 1fr}.k401-presets{flex-direction:column;align-items:flex-start}.k401-tip-item{flex-direction:column}.k401-breakdown-legend{gap:.75rem}}