.water-converter{--water-primary: #0891b2;--water-secondary: #06b6d4;--water-accent: #67e8f9;--water-bg: #ecfeff;--water-card-bg: #ffffff;--water-text: #164e63;--water-text-muted: #0e7490;--water-border: #a5f3fc;--water-shadow: 0 4px 20px rgba(8, 145, 178, .12);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.water-header{text-align:center;margin-bottom:2rem}.water-title{font-size:2rem;font-weight:800;color:var(--water-primary);margin:0 0 .5rem}.water-description{color:var(--water-text-muted);font-size:1.1rem;margin:0}.water-formula-container{background:linear-gradient(135deg,var(--water-bg) 0%,#cffafe 100%);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--water-border)}.water-formula-title{font-size:1.1rem;font-weight:700;color:var(--water-primary);margin:0 0 1rem;text-align:center}.water-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.water-formula-card{background:var(--water-card-bg);border-radius:12px;padding:1rem;text-align:center}.water-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--water-text-muted);margin-bottom:.5rem}.water-formula-math{font-size:.85rem;color:var(--water-text);overflow-x:auto}.water-form-container{background:var(--water-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--water-shadow);margin-bottom:2rem}.water-form{display:flex;flex-direction:column;gap:1rem}.water-section-title{font-size:.9rem;font-weight:700;color:var(--water-text);margin:0 0 .75rem}.water-input-row{display:flex;gap:1rem;align-items:flex-end;flex-wrap:wrap}.water-input-main{flex:1;min-width:150px}.water-input-group{display:flex;flex-direction:column;gap:.5rem;min-width:150px}.water-label{font-weight:600;font-size:.9rem;color:var(--water-text)}.water-input,.water-select{width:100%;padding:.875rem 1rem;border:2px solid var(--water-border);border-radius:10px;font-size:1rem;background:var(--water-bg)}.water-input:focus,.water-select:focus{outline:none;border-color:var(--water-primary);background:#fff}.water-divider{text-align:center;color:var(--water-text-muted);font-weight:700;padding:.5rem}.water-buttons{display:flex;gap:1rem;margin-top:.5rem}.water-btn{flex:1;padding:1rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer}.water-btn-primary{background:linear-gradient(135deg,var(--water-primary) 0%,var(--water-secondary) 100%);color:#fff}.water-btn-secondary{background:var(--water-bg);color:var(--water-text-muted);border:2px solid var(--water-border)}.water-results{background:var(--water-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--water-shadow);margin-bottom:2rem}.water-results-title{font-size:1.25rem;font-weight:700;color:var(--water-primary);margin:0 0 1.5rem;text-align:center}.water-results-cols{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.water-col-title{font-size:.9rem;font-weight:700;color:var(--water-text);margin:0 0 .75rem;text-align:center}.water-results-col{display:flex;flex-direction:column;gap:.75rem}.water-result-card{background:var(--water-bg);border-radius:10px;padding:.75rem 1rem;display:flex;justify-content:space-between;align-items:center}.water-result-primary{background:linear-gradient(135deg,var(--water-primary) 0%,var(--water-secondary) 100%)}.water-result-primary .water-result-label,.water-result-primary .water-result-value{color:#fff}.water-result-label{font-size:.8rem;font-weight:600;color:var(--water-text-muted)}.water-result-value{font-size:1rem;font-weight:800;color:var(--water-text)}.water-content{margin-top:3rem}.water-content-section{margin-bottom:2.5rem}.water-content-title{font-size:1.5rem;font-weight:700;color:var(--water-text);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--water-primary)}.water-content-text{color:var(--water-text-muted);line-height:1.7;margin:0 0 1rem}.water-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.water-feature-card{background:var(--water-bg);border-radius:12px;padding:1.25rem;text-align:center}.water-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.water-feature-title{font-size:1rem;font-weight:700;color:var(--water-text);margin:0 0 .5rem}.water-feature-desc{font-size:.85rem;color:var(--water-text-muted);margin:0}.water-table-wrapper{overflow-x:auto;border-radius:12px;margin-top:1.5rem}.water-table{width:100%;border-collapse:collapse;background:#fff;font-size:.9rem}.water-table th{background:var(--water-primary);color:#fff;padding:.875rem 1rem;text-align:left}.water-table td{padding:.75rem 1rem;border-bottom:1px solid var(--water-border)}.water-table-ref{font-weight:700;color:var(--water-primary)}.water-tips-grid{display:grid;gap:1rem;margin-top:1.5rem}.water-tip-card{display:flex;gap:1rem;background:var(--water-card-bg);border-radius:12px;padding:1.25rem;border-left:4px solid var(--water-primary)}.water-tip-icon{font-size:1.5rem}.water-tip-title{font-size:1rem;font-weight:700;color:var(--water-text);margin:0 0 .5rem}.water-tip-text{font-size:.9rem;color:var(--water-text-muted);margin:0}.water-faqs{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.water-faq-item{background:var(--water-card-bg);border-radius:12px;padding:1.25rem}.water-faq-question{font-size:1rem;font-weight:700;color:var(--water-primary);margin:0 0 .75rem}.water-faq-answer{font-size:.9rem;color:var(--water-text-muted);margin:0;line-height:1.6}@media (max-width: 768px){.water-results-cols{grid-template-columns:1fr}.water-input-row{flex-direction:column}}