.prob-calculator{--prob-primary: #0891b2;--prob-primary-dark: #0e7490;--prob-secondary: #06b6d4;--prob-accent: #67e8f9;--prob-bg: #ecfeff;--prob-card-bg: #ffffff;--prob-text: #164e63;--prob-text-muted: #0e7490;--prob-border: #a5f3fc;--prob-shadow: 0 4px 20px rgba(8, 145, 178, .12);max-width:900px;margin:0 auto;font-family:system-ui,-apple-system,sans-serif}.prob-header{text-align:center;margin-bottom:2rem}.prob-title{font-size:2rem;font-weight:800;color:var(--prob-primary);margin:0 0 .5rem}.prob-description{color:var(--prob-text-muted);font-size:1.1rem;margin:0}.prob-formula-container{background:linear-gradient(135deg,var(--prob-bg) 0%,#cffafe 100%);border-radius:16px;padding:1.5rem;margin-bottom:2rem;border:1px solid var(--prob-border)}.prob-formula-title{font-size:1.1rem;font-weight:700;color:var(--prob-primary);margin:0 0 1rem;text-align:center}.prob-formula-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.prob-formula-card{background:var(--prob-card-bg);border-radius:12px;padding:1rem;text-align:center;box-shadow:0 2px 8px #0000000f}.prob-formula-label{display:block;font-size:.85rem;font-weight:600;color:var(--prob-text-muted);margin-bottom:.5rem}.prob-formula-math{font-size:.95rem;color:var(--prob-text);overflow-x:auto}.prob-form-container{background:var(--prob-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--prob-shadow);margin-bottom:2rem}.prob-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem}.prob-tab{flex:1;padding:.75rem;background:var(--prob-bg);border:2px solid var(--prob-border);border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s;color:var(--prob-text-muted)}.prob-tab-active{background:var(--prob-primary);border-color:var(--prob-primary);color:#fff}.prob-form{display:flex;flex-direction:column;gap:1.25rem}.prob-input-group{display:flex;flex-direction:column;gap:.5rem}.prob-label{font-weight:600;font-size:.9rem;color:var(--prob-text)}.prob-input,.prob-select{width:100%;padding:.875rem 1rem;border:2px solid var(--prob-border);border-radius:10px;font-size:1.1rem;background:var(--prob-bg);transition:all .2s}.prob-input:focus,.prob-select:focus{outline:none;border-color:var(--prob-primary);background:#fff;box-shadow:0 0 0 4px #0891b21a}.prob-buttons{display:flex;gap:1rem}.prob-btn{flex:1;padding:1rem;border:none;border-radius:10px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s}.prob-btn-primary{background:linear-gradient(135deg,var(--prob-primary) 0%,var(--prob-secondary) 100%);color:#fff;box-shadow:0 4px 15px #0891b24d}.prob-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0891b266}.prob-btn-secondary{background:var(--prob-bg);color:var(--prob-text-muted);border:2px solid var(--prob-border)}.prob-results{background:var(--prob-card-bg);border-radius:16px;padding:1.5rem;box-shadow:var(--prob-shadow);margin-bottom:2rem}.prob-results-title{font-size:1.25rem;font-weight:700;color:var(--prob-primary);margin:0 0 1.5rem;text-align:center}.prob-main-result{text-align:center;background:linear-gradient(135deg,var(--prob-primary) 0%,var(--prob-secondary) 100%);border-radius:16px;padding:2rem;margin-bottom:1.5rem}.prob-main-label{display:block;font-size:.9rem;color:#ffffffe6;margin-bottom:.5rem}.prob-main-value{font-size:3rem;font-weight:800;color:#fff}.prob-summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.prob-summary-card{background:var(--prob-bg);border-radius:12px;padding:1rem;text-align:center}.prob-summary-label{display:block;font-size:.75rem;font-weight:600;color:var(--prob-text-muted);margin-bottom:.25rem}.prob-summary-value{font-size:1.1rem;font-weight:800;color:var(--prob-text)}.prob-content{margin-top:3rem}.prob-content-section{margin-bottom:2.5rem}.prob-content-title{font-size:1.5rem;font-weight:700;color:var(--prob-text);margin:0 0 1rem;padding-bottom:.5rem;border-bottom:3px solid var(--prob-primary)}.prob-content-text{color:var(--prob-text-muted);line-height:1.7;margin:0 0 1rem}.prob-features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1.5rem}.prob-feature-card{background:var(--prob-bg);border-radius:12px;padding:1.25rem;text-align:center}.prob-feature-icon{font-size:2rem;display:block;margin-bottom:.75rem}.prob-feature-title{font-size:1rem;font-weight:700;color:var(--prob-text);margin:0 0 .5rem}.prob-feature-desc{font-size:.85rem;color:var(--prob-text-muted);margin:0;line-height:1.5}.prob-table-wrapper{overflow-x:auto;border-radius:12px;margin-top:1.5rem}.prob-table{width:100%;border-collapse:collapse;background:#fff;font-size:.9rem}.prob-table th{background:var(--prob-primary);color:#fff;padding:.875rem 1rem;text-align:left}.prob-table td{padding:.75rem 1rem;border-bottom:1px solid var(--prob-border)}.prob-table-event{font-weight:700;color:var(--prob-primary)}.prob-tips-grid{display:grid;gap:1rem;margin-top:1.5rem}.prob-tip-card{display:flex;gap:1rem;background:var(--prob-card-bg);border-radius:12px;padding:1.25rem;border-left:4px solid var(--prob-primary)}.prob-tip-icon{font-size:1.5rem}.prob-tip-title{font-size:1rem;font-weight:700;color:var(--prob-text);margin:0 0 .5rem}.prob-tip-text{font-size:.9rem;color:var(--prob-text-muted);margin:0;line-height:1.6}.prob-faqs{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.prob-faq-item{background:var(--prob-card-bg);border-radius:12px;padding:1.25rem}.prob-faq-question{font-size:1rem;font-weight:700;color:var(--prob-primary);margin:0 0 .75rem}.prob-faq-answer{font-size:.9rem;color:var(--prob-text-muted);margin:0;line-height:1.6}@media (max-width: 768px){.prob-title{font-size:1.5rem}.prob-summary-grid{grid-template-columns:1fr}.prob-main-value{font-size:2rem}}