.unit-converter{--unit-primary: #475569;--unit-secondary: #64748b;--unit-accent: #94a3b8;--unit-bg: #f8fafc;--unit-card-bg: #ffffff;--unit-text: #1e293b;--unit-text-muted: #475569;--unit-border: #e2e8f0;--unit-shadow: 0 4px 20px rgba(71, 85, 105, .12);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.unit-header{text-align:center;margin-bottom:2rem}.unit-title{font-size:2rem;font-weight:800;color:var(--unit-primary);margin:0 0 .5rem}.unit-description{color:var(--unit-text-muted);font-size:1.1rem;margin:0}.unit-formula-container{background:linear-gradient(135deg,var(--unit-bg) 0%,#e2e8f0 100%);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--unit-border)}.unit-formula-title{font-size:1.1rem;font-weight:700;color:var(--unit-primary);margin:0 0 1rem;text-align:center}.unit-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.unit-formula-card{background:var(--unit-card-bg);border-radius:12px;padding:1rem;text-align:center}.unit-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--unit-text-muted);margin-bottom:.5rem}.unit-formula-math{font-size:.9rem;color:var(--unit-text);overflow-x:auto}.unit-form-container{background:var(--unit-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--unit-shadow);margin-bottom:2rem}.unit-form{display:flex;flex-direction:column;gap:1.25rem}.unit-input-row{display:flex;gap:1rem;align-items:flex-end;flex-wrap:wrap}.unit-category-group{flex:1;min-width:100%}.unit-input-main{flex:1;min-width:150px}.unit-input-group{display:flex;flex-direction:column;gap:.5rem;min-width:150px;flex:1}.unit-label{font-weight:600;font-size:.9rem;color:var(--unit-text)}.unit-input,.unit-select{width:100%;padding:.875rem 1rem;border:2px solid var(--unit-border);border-radius:10px;font-size:1rem;background:var(--unit-bg)}.unit-input:focus,.unit-select:focus{outline:none;border-color:var(--unit-primary);background:#fff}.unit-swap-btn{width:44px;height:44px;border:2px solid var(--unit-border);border-radius:10px;background:var(--unit-bg);font-size:1.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}.unit-swap-btn:hover{background:var(--unit-primary);color:#fff;border-color:var(--unit-primary)}.unit-buttons{display:flex;gap:1rem}.unit-btn{flex:1;padding:1rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer}.unit-btn-primary{background:linear-gradient(135deg,var(--unit-primary) 0%,var(--unit-secondary) 100%);color:#fff}.unit-btn-secondary{background:var(--unit-bg);color:var(--unit-text-muted);border:2px solid var(--unit-border)}.unit-results{background:var(--unit-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--unit-shadow);margin-bottom:2rem}.unit-results-title{font-size:1.25rem;font-weight:700;color:var(--unit-primary);margin:0 0 1.5rem;text-align:center}.unit-main-result{text-align:center;background:linear-gradient(135deg,var(--unit-primary) 0%,var(--unit-secondary) 100%);border-radius:16px;padding:2rem;margin-bottom:1rem}.unit-main-label{display:block;font-size:1rem;color:#ffffffe6;margin-bottom:.5rem}.unit-main-value{font-size:2rem;font-weight:800;color:#fff}.unit-formula-used{text-align:center;padding:1rem;background:var(--unit-bg);border-radius:10px}.unit-formula-label-small{font-size:.8rem;color:var(--unit-text-muted);display:block;margin-bottom:.25rem}.unit-formula-text{font-size:1rem;font-weight:600;color:var(--unit-text)}.unit-content{margin-top:3rem}.unit-content-section{margin-bottom:2.5rem}.unit-content-title{font-size:1.5rem;font-weight:700;color:var(--unit-text);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--unit-primary)}.unit-content-text{color:var(--unit-text-muted);line-height:1.7;margin:0 0 1rem}.unit-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.unit-feature-card{background:var(--unit-bg);border-radius:12px;padding:1.25rem;text-align:center}.unit-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.unit-feature-title{font-size:1rem;font-weight:700;color:var(--unit-text);margin:0 0 .5rem}.unit-feature-desc{font-size:.85rem;color:var(--unit-text-muted);margin:0}.unit-table-wrapper{overflow-x:auto;border-radius:12px;margin-top:1.5rem}.unit-table{width:100%;border-collapse:collapse;background:#fff;font-size:.9rem}.unit-table th{background:var(--unit-primary);color:#fff;padding:.875rem 1rem;text-align:left}.unit-table td{padding:.75rem 1rem;border-bottom:1px solid var(--unit-border)}.unit-table-ref{font-weight:700;color:var(--unit-primary)}.unit-tips-grid{display:grid;gap:1rem;margin-top:1.5rem}.unit-tip-card{display:flex;gap:1rem;background:var(--unit-card-bg);border-radius:12px;padding:1.25rem;border-left:4px solid var(--unit-primary)}.unit-tip-icon{font-size:1.5rem}.unit-tip-title{font-size:1rem;font-weight:700;color:var(--unit-text);margin:0 0 .5rem}.unit-tip-text{font-size:.9rem;color:var(--unit-text-muted);margin:0}.unit-faqs{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.unit-faq-item{background:var(--unit-card-bg);border-radius:12px;padding:1.25rem}.unit-faq-question{font-size:1rem;font-weight:700;color:var(--unit-primary);margin:0 0 .75rem}.unit-faq-answer{font-size:.9rem;color:var(--unit-text-muted);margin:0;line-height:1.6}@media (max-width: 768px){.unit-input-row{flex-direction:column}.unit-swap-btn{align-self:center}}