.fuel-calculator-wrapper{--fuel-primary: #0891b2;--fuel-primary-dark: #0e7490;--fuel-primary-light: #22d3ee;--fuel-secondary: #f59e0b;--fuel-accent: #10b981;--fuel-bg: #ecfeff;--fuel-card-bg: #ffffff;--fuel-text: #1f2937;--fuel-text-muted: #6b7280;--fuel-border: #a5f3fc;--fuel-shadow: 0 4px 6px -1px rgba(8, 145, 178, .1), 0 2px 4px -2px rgba(8, 145, 178, .1);--fuel-shadow-lg: 0 10px 15px -3px rgba(8, 145, 178, .15), 0 4px 6px -4px rgba(8, 145, 178, .1);--fuel-radius: 12px;--fuel-radius-lg: 16px}.fuel-calculator-container{max-width:800px;margin:0 auto;padding:2rem;background:var(--fuel-bg);border-radius:var(--fuel-radius-lg)}.fuel-header{text-align:center;margin-bottom:2rem}.fuel-title{font-size:2rem;font-weight:800;color:var(--fuel-text);margin:0 0 .5rem;background:linear-gradient(135deg,var(--fuel-primary),var(--fuel-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.fuel-description{color:var(--fuel-text-muted);font-size:1.05rem;margin:0;line-height:1.6}.fuel-formula-section{background:var(--fuel-card-bg);border-radius:var(--fuel-radius-lg);padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--fuel-shadow)}.fuel-formula-title{font-size:1.1rem;font-weight:700;color:var(--fuel-text);margin:0 0 1rem;text-align:center}.fuel-formula-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}@media (max-width: 640px){.fuel-formula-grid{grid-template-columns:1fr}}.fuel-formula-card{background:linear-gradient(135deg,#ecfeff,#cffafe);border-radius:var(--fuel-radius);padding:1rem;text-align:center;border:1px solid var(--fuel-border)}.fuel-formula-label{font-size:.85rem;font-weight:600;color:var(--fuel-primary-dark);margin:0 0 .5rem}.fuel-formula-math{font-size:.95rem;color:var(--fuel-text);overflow-x:auto;padding:.25rem 0}.fuel-unit-toggle{display:grid;grid-template-columns:repeat(2,1fr);gap:.5rem;margin-bottom:1.5rem;background:var(--fuel-card-bg);padding:.5rem;border-radius:var(--fuel-radius);box-shadow:var(--fuel-shadow)}.fuel-unit-btn{display:flex;flex-direction:column;align-items:center;padding:.75rem;border:2px solid transparent;border-radius:calc(var(--fuel-radius) - 2px);background:#f9fafb;cursor:pointer;transition:all .2s ease}.fuel-unit-btn:hover{background:#ecfeff;border-color:var(--fuel-primary-light)}.fuel-unit-btn.active{background:linear-gradient(135deg,var(--fuel-primary),var(--fuel-primary-dark));border-color:var(--fuel-primary);color:#fff}.fuel-unit-label{font-weight:700;font-size:.95rem}.fuel-unit-detail{font-size:.75rem;opacity:.8;margin-top:.125rem}.fuel-form{background:var(--fuel-card-bg);border-radius:var(--fuel-radius-lg);padding:1.5rem;box-shadow:var(--fuel-shadow);margin-bottom:1.5rem}.fuel-trip-toggle{display:flex;gap:.5rem;margin-bottom:1.5rem;background:#f3f4f6;padding:.25rem;border-radius:var(--fuel-radius)}.fuel-trip-btn{flex:1;padding:.625rem 1rem;border:none;border-radius:calc(var(--fuel-radius) - 4px);background:transparent;cursor:pointer;font-weight:600;font-size:.9rem;color:var(--fuel-text-muted);transition:all .2s ease}.fuel-trip-btn:hover{color:var(--fuel-primary)}.fuel-trip-btn.active{background:#fff;color:var(--fuel-primary);box-shadow:0 1px 3px #0000001a}.fuel-form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}@media (max-width: 480px){.fuel-form-row{grid-template-columns:1fr}}.fuel-input-group{display:flex;flex-direction:column;gap:.375rem;position:relative}.fuel-label{font-size:.875rem;font-weight:600;color:var(--fuel-text)}.fuel-input{padding:.75rem 4rem .75rem 1rem;border:2px solid var(--fuel-border);border-radius:var(--fuel-radius);font-size:1rem;color:var(--fuel-text);background:#ecfeff;transition:all .2s ease;width:100%;box-sizing:border-box}.fuel-input:focus{outline:none;border-color:var(--fuel-primary);box-shadow:0 0 0 3px #0891b226;background:#fff}.fuel-input::-moz-placeholder{color:var(--fuel-text-muted);opacity:.6}.fuel-input::placeholder{color:var(--fuel-text-muted);opacity:.6}.fuel-input-suffix{position:absolute;right:1rem;top:2.25rem;font-size:.85rem;color:var(--fuel-text-muted);pointer-events:none}.fuel-presets{margin:1rem 0}.fuel-presets-label{font-size:.85rem;font-weight:600;color:var(--fuel-text-muted);display:block;margin-bottom:.5rem}.fuel-presets-btns{display:flex;flex-wrap:wrap;gap:.5rem}.fuel-preset-btn{padding:.375rem .75rem;border:1px solid var(--fuel-border);border-radius:20px;background:#ecfeff;cursor:pointer;font-size:.8rem;color:var(--fuel-text);transition:all .2s ease}.fuel-preset-btn:hover{background:var(--fuel-primary);color:#fff;border-color:var(--fuel-primary)}.fuel-button-row{display:flex;gap:1rem;margin-top:1.5rem}.fuel-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.5rem;border:none;border-radius:var(--fuel-radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.fuel-btn-primary{background:linear-gradient(135deg,var(--fuel-primary),var(--fuel-primary-dark));color:#fff;box-shadow:var(--fuel-shadow)}.fuel-btn-primary:hover{transform:translateY(-2px);box-shadow:var(--fuel-shadow-lg)}.fuel-btn-secondary{background:#f3f4f6;color:var(--fuel-text);border:2px solid var(--fuel-border)}.fuel-btn-secondary:hover{background:#e5e7eb}.fuel-btn-icon{width:20px;height:20px}.fuel-results{background:var(--fuel-card-bg);border-radius:var(--fuel-radius-lg);padding:1.5rem;box-shadow:var(--fuel-shadow-lg);margin-bottom:1.5rem;border:2px solid var(--fuel-primary-light)}.fuel-results-title{font-size:1.25rem;font-weight:700;color:var(--fuel-text);margin:0 0 1rem;text-align:center}.fuel-results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}@media (max-width: 640px){.fuel-results-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.fuel-results-grid{grid-template-columns:1fr}}.fuel-result-card{background:linear-gradient(135deg,#ecfeff,#cffafe);border-radius:var(--fuel-radius);padding:1rem;text-align:center;display:flex;flex-direction:column;gap:.25rem}.fuel-result-card.fuel-result-primary{background:linear-gradient(135deg,var(--fuel-primary),var(--fuel-primary-dark));color:#fff}.fuel-result-card.fuel-result-eco{background:linear-gradient(135deg,#dcfce7,#bbf7d0);grid-column:span 2}@media (max-width: 480px){.fuel-result-card.fuel-result-eco{grid-column:span 1}}.fuel-result-label{font-size:.8rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em;opacity:.8}.fuel-result-value{font-size:1.75rem;font-weight:800;color:var(--fuel-primary-dark)}.fuel-result-card.fuel-result-primary .fuel-result-value{font-size:2.5rem;color:#fff}.fuel-result-card.fuel-result-eco .fuel-result-value{color:#15803d}.fuel-result-unit{font-size:.85rem;opacity:.9}.fuel-trip-visual{display:flex;align-items:center;justify-content:center;gap:1rem;margin-top:1.5rem;padding:1rem;background:linear-gradient(135deg,#ecfeff,#cffafe);border-radius:var(--fuel-radius)}.fuel-trip-icon{font-size:2rem}.fuel-trip-road{flex:1;max-width:200px;position:relative;height:20px}.fuel-trip-line{position:absolute;top:50%;left:0;right:0;height:4px;background:var(--fuel-primary);border-radius:2px}.fuel-trip-dots{position:absolute;top:50%;left:0;right:0;transform:translateY(-50%);display:flex;justify-content:space-between}.fuel-trip-dots span{width:8px;height:8px;background:#fff;border:2px solid var(--fuel-primary);border-radius:50%}.fuel-content{margin-top:2rem}.fuel-section{background:var(--fuel-card-bg);border-radius:var(--fuel-radius-lg);padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--fuel-shadow)}.fuel-section-title{font-size:1.35rem;font-weight:700;color:var(--fuel-text);margin:0 0 1rem;padding-bottom:.75rem;border-bottom:2px solid var(--fuel-border)}.fuel-section-text{color:var(--fuel-text);line-height:1.7;margin:0 0 1rem}.fuel-features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:1.5rem}@media (max-width: 640px){.fuel-features-grid{grid-template-columns:1fr}}.fuel-feature-card{background:linear-gradient(135deg,#ecfeff,#cffafe);border-radius:var(--fuel-radius);padding:1.25rem;text-align:center;border:1px solid var(--fuel-border)}.fuel-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.fuel-feature-title{font-size:1rem;font-weight:700;color:var(--fuel-text);margin:0 0 .5rem}.fuel-feature-desc{font-size:.9rem;color:var(--fuel-text-muted);margin:0;line-height:1.5}.fuel-tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:1rem}@media (max-width: 768px){.fuel-tips-grid{grid-template-columns:1fr}}.fuel-tip-card{background:#ecfeff;border-radius:var(--fuel-radius);padding:1rem;border-left:4px solid var(--fuel-primary)}.fuel-tip-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem}.fuel-tip-icon{font-size:1.25rem}.fuel-tip-title{font-size:.95rem;font-weight:700;color:var(--fuel-text);margin:0}.fuel-tip-text{font-size:.9rem;color:var(--fuel-text-muted);margin:0;line-height:1.6}.fuel-table-wrapper{overflow-x:auto;margin-top:1rem;border-radius:var(--fuel-radius);border:1px solid var(--fuel-border)}.fuel-table{width:100%;border-collapse:collapse;font-size:.9rem}.fuel-table th{background:linear-gradient(135deg,var(--fuel-primary),var(--fuel-primary-dark));color:#fff;padding:.875rem 1rem;text-align:left;font-weight:600}.fuel-table td{padding:.75rem 1rem;border-bottom:1px solid var(--fuel-border);color:var(--fuel-text)}.fuel-table tr:last-child td{border-bottom:none}.fuel-table tr:nth-child(2n){background:#ecfeff}.fuel-faqs{margin-top:1rem}.fuel-faq{background:#ecfeff;border-radius:var(--fuel-radius);margin-bottom:.75rem;border:1px solid var(--fuel-border);overflow:hidden}.fuel-faq[open]{background:#fff}.fuel-faq-question{padding:1rem 1.25rem;font-weight:600;color:var(--fuel-text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;list-style:none}.fuel-faq-question::-webkit-details-marker{display:none}.fuel-faq-question:after{content:"+";font-size:1.25rem;color:var(--fuel-primary);font-weight:700;transition:transform .2s ease}.fuel-faq[open] .fuel-faq-question:after{transform:rotate(45deg)}.fuel-faq-answer{padding:0 1.25rem 1rem;color:var(--fuel-text-muted);line-height:1.6;margin:0;font-size:.95rem}@media (max-width: 640px){.fuel-calculator-container{padding:1rem}.fuel-title{font-size:1.5rem}.fuel-description{font-size:.95rem}.fuel-section-title{font-size:1.15rem}}