.margin-calculator{--margin-primary: #0891b2;--margin-primary-dark: #0e7490;--margin-secondary: #06b6d4;--margin-accent: #22d3ee;--margin-bg: #ecfeff;--margin-card-bg: #ffffff;--margin-text: #1e293b;--margin-text-muted: #64748b;--margin-border: #a5f3fc;--margin-shadow: 0 4px 20px rgba(8, 145, 178, .12);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.margin-header{text-align:center;margin-bottom:2rem}.margin-title{font-size:2rem;font-weight:800;color:var(--margin-primary);margin:0 0 .5rem}.margin-description{color:var(--margin-text-muted);font-size:1.1rem;margin:0}.margin-formula-container{background:linear-gradient(135deg,var(--margin-bg) 0%,#cffafe 100%);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--margin-border)}.margin-formula-title{font-size:1.1rem;font-weight:700;color:var(--margin-primary);margin:0 0 1rem;text-align:center}.margin-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.margin-formula-card{background:var(--margin-card-bg);border-radius:12px;padding:1rem;text-align:center;box-shadow:0 2px 8px #0000000f}.margin-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--margin-text-muted);margin-bottom:.5rem}.margin-formula-math{font-size:1rem;color:var(--margin-text);overflow-x:auto;padding:.25rem 0}.margin-form-container{background:var(--margin-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--margin-shadow);margin-bottom:2rem}.margin-mode-toggle{display:flex;gap:.5rem;margin-bottom:1.5rem;background:var(--margin-bg);padding:.375rem;border-radius:12px}.margin-mode-btn{flex:1;padding:.875rem 1rem;border:none;border-radius:10px;background:transparent;color:var(--margin-text-muted);font-weight:600;font-size:.9rem;cursor:pointer;transition:all .2s ease}.margin-mode-btn:hover{color:var(--margin-primary)}.margin-mode-btn.active{background:linear-gradient(135deg,var(--margin-primary) 0%,var(--margin-secondary) 100%);color:#fff;box-shadow:0 2px 8px #0891b24d}.margin-form{display:flex;flex-direction:column;gap:1.25rem}.margin-input-group{display:flex;flex-direction:column;gap:.5rem}.margin-label{font-weight:600;font-size:.9rem;color:var(--margin-text)}.margin-input-wrapper{position:relative;display:flex;align-items:center}.margin-input-prefix{position:absolute;left:1rem;color:var(--margin-text-muted);font-weight:600}.margin-input-suffix{position:absolute;right:1rem;color:var(--margin-text-muted);font-weight:600}.margin-input{width:100%;padding:.875rem 1rem .875rem 2rem;border:2px solid var(--margin-border);border-radius:10px;font-size:1.1rem;transition:all .2s ease;background:var(--margin-bg)}.margin-input-percent{padding-left:1rem;padding-right:2.5rem;text-align:center}.margin-input:focus{outline:none;border-color:var(--margin-primary);background:#fff;box-shadow:0 0 0 4px #0891b21a}.margin-buttons{display:flex;gap:1rem;margin-top:.5rem}.margin-btn{flex:1;padding:1rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s ease}.margin-btn-primary{background:linear-gradient(135deg,var(--margin-primary) 0%,var(--margin-secondary) 100%);color:#fff;box-shadow:0 4px 15px #0891b24d}.margin-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0891b266}.margin-btn-secondary{background:var(--margin-bg);color:var(--margin-text-muted);border:2px solid var(--margin-border)}.margin-btn-secondary:hover{border-color:var(--margin-primary);color:var(--margin-primary)}.margin-results{background:var(--margin-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--margin-shadow);margin-bottom:2rem}.margin-results-title{font-size:1.25rem;font-weight:700;color:var(--margin-primary);margin:0 0 1.5rem;text-align:center}.margin-visual{margin-bottom:1.5rem}.margin-visual-bar{display:flex;height:50px;border-radius:12px;overflow:hidden;box-shadow:inset 0 2px 4px #0000001a}.margin-bar-cost{background:linear-gradient(135deg,#64748b,#475569);display:flex;align-items:center;justify-content:center;transition:width .5s ease}.margin-bar-profit{background:linear-gradient(135deg,var(--margin-primary) 0%,var(--margin-secondary) 100%);display:flex;align-items:center;justify-content:center;transition:width .5s ease}.margin-bar-label{color:#fff;font-weight:700;font-size:.85rem;text-shadow:0 1px 2px rgba(0,0,0,.2)}.margin-results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1.5rem}.margin-result-card{background:var(--margin-bg);border-radius:12px;padding:1.25rem;text-align:center}.margin-result-highlight{background:linear-gradient(135deg,#cffafe,#a5f3fc)}.margin-result-label{display:block;font-size:.8rem;font-weight:600;color:var(--margin-text-muted);margin-bottom:.5rem}.margin-result-value{font-size:1.5rem;font-weight:800;color:var(--margin-text)}.margin-result-highlight .margin-result-value{color:var(--margin-primary)}.margin-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.margin-metric-card{background:var(--margin-bg);border-radius:12px;padding:1.25rem;text-align:center}.margin-metric-primary{background:linear-gradient(135deg,var(--margin-primary) 0%,var(--margin-secondary) 100%)}.margin-metric-primary .margin-metric-label,.margin-metric-primary .margin-metric-value{color:#fff}.margin-metric-label{display:block;font-size:.85rem;font-weight:600;color:var(--margin-text-muted);margin-bottom:.5rem}.margin-metric-value{font-size:2rem;font-weight:800;color:var(--margin-primary)}.margin-content{margin-top:3rem}.margin-content-section{margin-bottom:2.5rem}.margin-content-title{font-size:1.5rem;font-weight:700;color:var(--margin-text);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--margin-primary)}.margin-content-text{color:var(--margin-text-muted);line-height:1.7;margin:0 0 1rem}.margin-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.margin-feature-card{background:var(--margin-bg);border-radius:12px;padding:1.25rem;text-align:center}.margin-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.margin-feature-title{font-size:1rem;font-weight:700;color:var(--margin-text);margin:0 0 .5rem}.margin-feature-desc{font-size:.85rem;color:var(--margin-text-muted);margin:0;line-height:1.5}.margin-table-wrapper{overflow-x:auto;margin:1.5rem 0;border-radius:12px;box-shadow:var(--margin-shadow)}.margin-table{width:100%;border-collapse:collapse;background:#fff;font-size:.9rem}.margin-table th{background:var(--margin-primary);color:#fff;padding:1rem;text-align:left;font-weight:600}.margin-table td{padding:.875rem 1rem;border-bottom:1px solid var(--margin-border)}.margin-table tr:hover{background:var(--margin-bg)}.margin-table-industry{font-weight:700;color:var(--margin-primary)}.margin-tips-grid{display:grid;gap:1rem;margin-top:1.5rem}.margin-tip-card{display:flex;gap:1rem;background:var(--margin-card-bg);border-radius:12px;padding:1.25rem;box-shadow:0 2px 8px #0000000f;border-left:4px solid var(--margin-primary)}.margin-tip-icon{font-size:1.5rem;flex-shrink:0}.margin-tip-content{flex:1}.margin-tip-title{font-size:1rem;font-weight:700;color:var(--margin-text);margin:0 0 .5rem}.margin-tip-text{font-size:.9rem;color:var(--margin-text-muted);margin:0;line-height:1.6}.margin-faqs{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.margin-faq-item{background:var(--margin-card-bg);border-radius:12px;padding:1.25rem;box-shadow:0 2px 8px #0000000f}.margin-faq-question{font-size:1rem;font-weight:700;color:var(--margin-primary);margin:0 0 .75rem}.margin-faq-answer{font-size:.9rem;color:var(--margin-text-muted);margin:0;line-height:1.6}@media (max-width: 768px){.margin-title{font-size:1.5rem}.margin-formula-grid{grid-template-columns:1fr}.margin-mode-toggle{flex-direction:column}.margin-results-grid,.margin-metrics,.margin-features-grid{grid-template-columns:1fr}}