.soil-calculator-container{--soil-primary: #166534;--soil-secondary: #15803d;--soil-accent: #22c55e;--soil-light: #dcfce7;--soil-bg: #f0fdf4;--soil-text: #1f2937;--soil-text-light: #6b7280;--soil-success: #16a34a;--soil-border: #e5e7eb;--soil-radius: 12px;--soil-shadow: 0 4px 6px -1px rgba(0,0,0,.1);--soil-shadow-lg: 0 10px 25px -5px rgba(0,0,0,.15);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.soil-header{text-align:center;margin-bottom:2rem}.soil-title{font-size:2rem;font-weight:800;color:var(--soil-primary);margin:0 0 .5rem}.soil-description{color:var(--soil-text-light);font-size:1.1rem;margin:0}.soil-formula-container{background:linear-gradient(135deg,var(--soil-bg) 0%,var(--soil-light) 100%);border-radius:var(--soil-radius);padding:1.5rem;margin-bottom:1.5rem;border:1px solid var(--soil-border)}.soil-formula-title{font-size:1.1rem;font-weight:700;color:var(--soil-primary);margin:0 0 1rem;text-align:center}.soil-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.soil-formula-card{background:#fff;border-radius:8px;padding:1rem;text-align:center;box-shadow:var(--soil-shadow)}.soil-formula-label{font-size:.85rem;font-weight:600;color:var(--soil-secondary);margin:0 0 .5rem}.soil-formula-math{font-size:.95rem;color:var(--soil-text);overflow-x:auto}.soil-unit-toggle{display:flex;gap:.5rem;justify-content:center;margin-bottom:1.5rem;padding:.25rem;background:var(--soil-border);border-radius:var(--soil-radius);width:-moz-fit-content;width:fit-content;margin-left:auto;margin-right:auto}.soil-unit-btn{display:flex;flex-direction:column;align-items:center;padding:.75rem 1.5rem;border:none;background:transparent;border-radius:10px;cursor:pointer;transition:all .2s ease}.soil-unit-btn.active{background:#fff;box-shadow:var(--soil-shadow)}.soil-unit-btn .unit-label{font-weight:700;color:var(--soil-text);font-size:.95rem}.soil-unit-btn .unit-detail{font-size:.75rem;color:var(--soil-text-light)}.soil-shape-section{margin-bottom:1.5rem}.soil-shape-title{font-size:1rem;font-weight:600;color:var(--soil-text);margin:0 0 .75rem;text-align:center}.soil-shape-grid{display:flex;justify-content:center;gap:.75rem;flex-wrap:wrap}.soil-shape-btn{display:flex;flex-direction:column;align-items:center;padding:1rem 1.5rem;border:2px solid var(--soil-border);background:#fff;border-radius:10px;cursor:pointer;transition:all .2s ease;min-width:100px}.soil-shape-btn:hover{border-color:var(--soil-accent)}.soil-shape-btn.active{border-color:var(--soil-primary);background:var(--soil-light)}.soil-shape-btn .shape-icon{font-size:1.5rem;margin-bottom:.25rem}.soil-shape-btn .shape-label{font-size:.85rem;font-weight:600;color:var(--soil-text)}.soil-type-section{margin-bottom:1.5rem}.soil-type-title{font-size:1rem;font-weight:600;color:var(--soil-text);margin:0 0 .75rem;text-align:center}.soil-type-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.5rem}.soil-type-btn{display:flex;flex-direction:column;align-items:center;padding:.75rem;border:2px solid var(--soil-border);background:#fff;border-radius:10px;cursor:pointer;transition:all .2s ease;text-align:center}.soil-type-btn:hover{border-color:var(--soil-accent)}.soil-type-btn.active{border-color:var(--soil-primary);background:var(--soil-light)}.soil-type-btn .type-label{font-weight:600;color:var(--soil-text);font-size:.85rem}.soil-type-btn .type-desc{font-size:.7rem;color:var(--soil-text-light);margin-top:.25rem}.soil-presets-section{margin-bottom:1.5rem}.soil-presets-title{font-size:.9rem;font-weight:600;color:var(--soil-text);margin:0 0 .75rem;text-align:center}.soil-presets-grid{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}.soil-preset-btn{display:flex;flex-direction:column;align-items:center;padding:.5rem 1rem;border:1px solid var(--soil-border);background:#fff;border-radius:8px;cursor:pointer;transition:all .2s ease;min-width:90px}.soil-preset-btn:hover{border-color:var(--soil-accent);background:var(--soil-bg)}.soil-preset-btn .preset-depth{font-weight:700;color:var(--soil-primary);font-size:1.1rem}.soil-preset-btn .preset-label{font-weight:600;color:var(--soil-text);font-size:.75rem}.soil-preset-btn .preset-use{font-size:.65rem;color:var(--soil-text-light)}.soil-form{background:#fff;border-radius:var(--soil-radius);padding:1.5rem;box-shadow:var(--soil-shadow);margin-bottom:1.5rem}.soil-input-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-bottom:1rem}.soil-input-group{display:flex;flex-direction:column}.soil-label{font-size:.85rem;font-weight:600;color:var(--soil-text);margin-bottom:.5rem;display:flex;align-items:center;gap:.5rem}.soil-unit-label{font-size:.75rem;color:var(--soil-text-light);font-weight:400}.soil-input{padding:.75rem 1rem;border:2px solid var(--soil-border);border-radius:8px;font-size:1rem;transition:all .2s ease}.soil-input:focus{outline:none;border-color:var(--soil-primary);box-shadow:0 0 0 3px #1665341a}.soil-button-group{display:flex;gap:1rem;margin-top:1rem}.soil-calculate-btn{flex:1;padding:1rem;background:linear-gradient(135deg,var(--soil-primary),var(--soil-secondary));color:#fff;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease}.soil-calculate-btn:hover{transform:translateY(-2px);box-shadow:var(--soil-shadow-lg)}.soil-reset-btn{padding:1rem 1.5rem;background:var(--soil-border);color:var(--soil-text);border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.soil-reset-btn:hover{background:#d1d5db}.soil-results{background:linear-gradient(135deg,var(--soil-primary),var(--soil-secondary));border-radius:var(--soil-radius);padding:1.5rem;margin-bottom:2rem}.soil-results-title{color:#fff;font-size:1.25rem;font-weight:700;margin:0 0 1rem;text-align:center}.soil-results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:.75rem}.soil-result-card{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:10px;padding:1rem;text-align:center}.soil-result-card.primary{background:#fffffff2}.soil-result-card.primary .result-label,.soil-result-card.primary .result-value{color:var(--soil-primary)}.soil-result-card.highlight{background:#ffffffe6}.soil-result-card.highlight .result-label,.soil-result-card.highlight .result-value{color:var(--soil-secondary)}.soil-result-card.success{background:#22c55ee6}.soil-result-card.extra{background:#fff3}.soil-result-card .result-label{display:block;font-size:.75rem;color:#ffffffe6;margin-bottom:.25rem;font-weight:500}.soil-result-card .result-value{display:block;font-size:1.25rem;font-weight:800;color:#fff}.soil-content{margin-top:2rem}.soil-content-section{margin-bottom:2.5rem}.soil-section-title{font-size:1.5rem;font-weight:700;color:var(--soil-primary);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--soil-light)}.soil-paragraph{color:var(--soil-text);line-height:1.7;margin:0 0 1rem}.soil-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin:1.5rem 0}.soil-feature-card{background:var(--soil-bg);border-radius:10px;padding:1.25rem;text-align:center;border:1px solid var(--soil-border)}.soil-feature-card .feature-icon{font-size:2rem;display:block;margin-bottom:.5rem}.soil-feature-card .feature-title{font-size:1rem;font-weight:700;color:var(--soil-primary);margin:0 0 .5rem}.soil-feature-card .feature-desc{font-size:.85rem;color:var(--soil-text-light);margin:0}.soil-tips-grid{display:grid;gap:1rem;margin:1.5rem 0}.soil-tip-card{display:flex;gap:1rem;padding:1.25rem;background:#fff;border-radius:10px;border:1px solid var(--soil-border);box-shadow:var(--soil-shadow)}.soil-tip-card .tip-icon{font-size:1.5rem;flex-shrink:0}.soil-tip-card .tip-content{flex:1}.soil-tip-card .tip-title{font-size:1rem;font-weight:700;color:var(--soil-primary);margin:0 0 .5rem}.soil-tip-card .tip-text{font-size:.9rem;color:var(--soil-text);line-height:1.6;margin:0}.soil-table-wrapper{overflow-x:auto;margin:1.5rem 0;border-radius:10px;border:1px solid var(--soil-border)}.soil-table{width:100%;border-collapse:collapse;font-size:.9rem}.soil-table th{background:var(--soil-primary);color:#fff;padding:.75rem 1rem;text-align:left;font-weight:600}.soil-table td{padding:.75rem 1rem;border-bottom:1px solid var(--soil-border)}.soil-table tr:nth-child(2n){background:var(--soil-bg)}.soil-table tr:hover{background:var(--soil-light)}.soil-faqs{margin:1.5rem 0}.soil-faq{background:#fff;border:1px solid var(--soil-border);border-radius:10px;margin-bottom:.5rem;overflow:hidden}.soil-faq summary{padding:1rem 1.25rem;cursor:pointer;font-weight:600;color:var(--soil-text);list-style:none;display:flex;justify-content:space-between;align-items:center}.soil-faq summary::-webkit-details-marker{display:none}.soil-faq summary:after{content:"+";font-size:1.25rem;color:var(--soil-primary);font-weight:700}.soil-faq[open] summary:after{content:"−"}.soil-faq[open] summary{background:var(--soil-bg);border-bottom:1px solid var(--soil-border)}.soil-faq .faq-answer{padding:1rem 1.25rem;margin:0;color:var(--soil-text);line-height:1.6}@media (max-width: 640px){.soil-title{font-size:1.5rem}.soil-formula-grid{grid-template-columns:1fr}.soil-shape-grid{justify-content:center}.soil-shape-btn{min-width:80px;padding:.75rem 1rem}.soil-type-grid{grid-template-columns:repeat(2,1fr)}.soil-button-group{flex-direction:column}.soil-results-grid{grid-template-columns:repeat(2,1fr)}}