:root{--color-primary: #2563EB;--color-primary-hover: #1D4ED8;--color-primary-light: #EFF6FF;--color-dark-blue: #1E3A8A;--color-bg-light: #F8FAFC;--color-surface: #FFFFFF;--color-text-main: #1F2937;--color-text-muted: #4B5563;--color-border: #E5E7EB;--color-border-hover: #D1D5DB;--color-success: #16A34A;--color-success-bg: #F0FDF4;--color-success-border: #BBF7D0;--color-error: #DC2626;--color-error-bg: #FEF2F2;--color-error-border: #FCA5A5;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .03);--transition: all .2s ease-in-out;--max-width: 1200px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);font-size:16px;line-height:1.6;color:var(--color-text-main);background-color:var(--color-bg-light);scroll-behavior:smooth;-webkit-font-smoothing:antialiased}body{min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--color-primary-hover);text-decoration:underline}button,input,select,textarea{font:inherit}:focus-visible{outline:3px solid rgba(37,99,235,.4);outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 1.25rem}.header{position:sticky;top:0;z-index:50;background-color:#fffffff2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border)}.header-container{display:flex;align-items:center;justify-content:space-between;height:4.25rem}.logo{display:flex;align-items:center;gap:.6rem;font-size:1.35rem;font-weight:700;color:var(--color-dark-blue);text-decoration:none!important}.logo-icon{width:2.2rem;height:2.2rem;background:linear-gradient(135deg,var(--color-primary),var(--color-dark-blue));color:#fff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem}.logo-text span{color:var(--color-primary)}.nav-desktop{display:flex;align-items:center;gap:1.75rem}.nav-link{font-weight:500;color:var(--color-text-muted);font-size:.95rem;padding:.5rem .25rem;border-bottom:2px solid transparent}.nav-link:hover,.nav-link.active{color:var(--color-primary);text-decoration:none;border-bottom-color:var(--color-primary)}.nav-toggle{display:none;background:none;border:none;padding:.5rem;cursor:pointer;color:var(--color-text-main);border-radius:var(--radius-sm)}.nav-mobile{display:none;position:absolute;top:100%;left:0;width:100%;background-color:var(--color-surface);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-lg);padding:1rem 1.25rem;flex-direction:column;gap:.75rem}.nav-mobile.open{display:flex}.nav-mobile .nav-link{padding:.75rem 0;border-bottom:1px solid var(--color-border);font-size:1.05rem}main{flex:1;padding:2.5rem 0 4rem}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;font-size:.875rem;color:var(--color-text-muted);margin-bottom:1.75rem}.breadcrumb a{color:var(--color-text-muted)}.breadcrumb a:hover{color:var(--color-primary)}.breadcrumb-separator{color:var(--color-border-hover)}.breadcrumb-current{color:var(--color-text-main);font-weight:600}.page-header{margin-bottom:2.5rem;text-align:center}.page-header-left{text-align:left}.page-title{font-size:2.25rem;font-weight:800;color:var(--color-dark-blue);line-height:1.25;letter-spacing:-.02em;margin-bottom:.75rem}.page-subtitle{font-size:1.125rem;color:var(--color-text-muted);max-width:42rem;margin:0 auto}.page-header-left .page-subtitle{margin:0}.search-container{max-width:36rem;margin:2rem auto 0;position:relative}.search-input{width:100%;padding:1rem 1.25rem 1rem 3rem;font-size:1rem;background-color:var(--color-surface);border:2px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition)}.search-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 4px #2563eb26}.search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);width:1.25rem;height:1.25rem;color:var(--color-text-muted);pointer-events:none}.grid-categories{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;margin-bottom:3rem}.category-chip{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text-main);font-weight:600;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-sm)}.category-chip:hover,.category-chip.active{border-color:var(--color-primary);background-color:var(--color-primary-light);color:var(--color-primary)}.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column}.card:hover{border-color:var(--color-border-hover);box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-icon-wrapper{width:2.75rem;height:2.75rem;border-radius:var(--radius-md);background-color:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:1.35rem;margin-bottom:1rem}.card-title{font-size:1.2rem;font-weight:700;color:var(--color-dark-blue);margin-bottom:.5rem}.card-description{font-size:.925rem;color:var(--color-text-muted);margin-bottom:1.5rem;flex:1;line-height:1.5}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;border-radius:var(--radius-md);cursor:pointer;border:1px solid transparent;transition:var(--transition);text-decoration:none!important;white-space:nowrap;min-height:2.75rem}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-hover);color:#fff}.btn-secondary{background-color:var(--color-surface);border-color:var(--color-border);color:var(--color-text-main)}.btn-secondary:hover{background-color:var(--color-bg-light);border-color:var(--color-border-hover)}.btn-success{background-color:var(--color-success);color:#fff}.btn-success:hover{background-color:#15803d}.btn-full{width:100%}.calculator-layout{display:grid;grid-template-columns:1fr 300px;gap:2rem;align-items:start}.calculator-layout-single{grid-template-columns:1fr}.calculator-card{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-sm);margin-bottom:2.5rem}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem;margin-bottom:1.5rem}.form-group{display:flex;flex-direction:column;gap:.4rem}.form-group-full{grid-column:1 / -1}.form-label{font-size:.925rem;font-weight:600;color:var(--color-text-main)}.input-wrapper{position:relative;display:flex;align-items:center}.form-input,.form-select{width:100%;padding:.75rem 1rem;font-size:1rem;border:1.5px solid var(--color-border);border-radius:var(--radius-md);background-color:var(--color-surface);color:var(--color-text-main);transition:var(--transition)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb26}.input-unit{position:absolute;right:1rem;color:var(--color-text-muted);font-size:.875rem;font-weight:500;pointer-events:none}.form-hint{font-size:.8rem;color:var(--color-text-muted)}.toggle-group{display:inline-flex;background-color:var(--color-bg-light);padding:.25rem;border-radius:var(--radius-md);border:1px solid var(--color-border);gap:.25rem}.toggle-btn{padding:.5rem 1rem;font-size:.875rem;font-weight:600;border:none;background:none;border-radius:var(--radius-sm);color:var(--color-text-muted);cursor:pointer;transition:var(--transition)}.toggle-btn.active{background-color:var(--color-surface);color:var(--color-primary);box-shadow:var(--shadow-sm)}.actions-group{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}.result-box{margin-top:2rem;padding:1.5rem;background-color:var(--color-primary-light);border:1.5px solid rgba(37,99,235,.2);border-radius:var(--radius-md);display:none;animation:fadeIn .25s ease-out}.result-box.visible{display:block}.result-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}.result-title{font-size:.9rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700;color:var(--color-dark-blue)}.result-value-large{font-size:2.25rem;font-weight:800;color:var(--color-primary);line-height:1.1;margin-bottom:.5rem}.result-details{font-size:.95rem;color:var(--color-text-main);border-top:1px solid rgba(37,99,235,.15);padding-top:.75rem;margin-top:.75rem}.result-badge{display:inline-flex;align-items:center;padding:.25rem .75rem;border-radius:9999px;font-size:.85rem;font-weight:700}.result-badge-success{background-color:var(--color-success-bg);color:var(--color-success);border:1px solid var(--color-success-border)}.result-badge-warning{background-color:#fef3c7;color:#d97706;border:1px solid #FDE68A}.result-badge-error{background-color:var(--color-error-bg);color:var(--color-error);border:1px solid var(--color-error-border)}.error-box{margin-top:1.5rem;padding:1rem 1.25rem;background-color:var(--color-error-bg);border:1px solid var(--color-error-border);border-radius:var(--radius-md);color:var(--color-error);font-size:.925rem;font-weight:500;display:none}.error-box.visible{display:block}.article-content{background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-sm);margin-bottom:2.5rem}.article-content h2{font-size:1.5rem;font-weight:700;color:var(--color-dark-blue);margin:1.75rem 0 1rem}.article-content h2:first-child{margin-top:0}.article-content h3{font-size:1.2rem;font-weight:600;color:var(--color-text-main);margin:1.25rem 0 .75rem}.article-content p{color:var(--color-text-muted);margin-bottom:1rem;line-height:1.7}.article-content ul,.article-content ol{margin-bottom:1rem;padding-left:1.5rem;color:var(--color-text-muted)}.article-content li{margin-bottom:.4rem}.formula-card{background-color:var(--color-bg-light);border-left:4px solid var(--color-primary);padding:1rem 1.25rem;border-radius:0 var(--radius-md) var(--radius-md) 0;font-family:monospace,sans-serif;font-size:1.05rem;color:var(--color-dark-blue);margin:1.25rem 0;font-weight:600}.example-box{background-color:#f0f9ff;border:1px solid #BAE6FD;border-radius:var(--radius-md);padding:1.25rem;margin:1rem 0}.example-box-title{font-weight:700;color:#0369a1;margin-bottom:.4rem}.faq-list{display:flex;flex-direction:column;gap:.75rem;margin-top:1rem}.faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;background-color:var(--color-surface)}.faq-button{width:100%;padding:1rem 1.25rem;display:flex;align-items:center;justify-content:space-between;background:none;border:none;font-weight:600;font-size:1rem;color:var(--color-dark-blue);text-align:left;cursor:pointer;transition:var(--transition)}.faq-button:hover{background-color:var(--color-bg-light)}.faq-icon{width:1.25rem;height:1.25rem;transition:transform .2s ease;color:var(--color-primary);flex-shrink:0}.faq-item.open .faq-icon{transform:rotate(180deg)}.faq-answer{padding:0 1.25rem 1.25rem;color:var(--color-text-muted);font-size:.95rem;line-height:1.6;display:none}.faq-item.open .faq-answer{display:block}.ad-placeholder{background-color:#f1f5f9;border:1px dashed #CBD5E1;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:.85rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;margin:1.5rem 0}.ad-top{width:100%;min-height:90px}.ad-sidebar{width:100%;min-height:250px}.ad-bottom{width:100%;min-height:90px}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;margin:3rem 0}.feature-item{background-color:var(--color-surface);padding:1.5rem;border-radius:var(--radius-lg);border:1px solid var(--color-border);text-align:center;box-shadow:var(--shadow-sm)}.feature-icon{width:3rem;height:3rem;background-color:var(--color-primary-light);color:var(--color-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;font-size:1.5rem}.feature-title{font-weight:700;color:var(--color-dark-blue);margin-bottom:.5rem}.table-responsive{overflow-x:auto;margin:1.5rem 0}.data-table{width:100%;border-collapse:collapse;font-size:.9rem}.data-table th,.data-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--color-border)}.data-table th{background-color:var(--color-bg-light);font-weight:700;color:var(--color-dark-blue)}.data-table tr:hover{background-color:#2563eb05}.footer{background-color:var(--color-dark-blue);color:#e2e8f0;padding:4rem 0 2rem;margin-top:auto}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:3rem}.footer-brand .logo{color:#fff;margin-bottom:1rem}.footer-text{color:#94a3b8;font-size:.925rem;max-width:22rem;line-height:1.6}.footer-title{font-size:1rem;font-weight:700;color:#fff;margin-bottom:1.25rem}.footer-links{list-style:none;display:flex;flex-direction:column;gap:.6rem}.footer-links a{color:#94a3b8;font-size:.9rem}.footer-links a:hover{color:#fff;text-decoration:none}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:2rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;font-size:.875rem;color:#94a3b8}.country-flags{display:flex;align-items:center;gap:.75rem}.cookie-banner{position:fixed;bottom:1.5rem;left:1.5rem;right:1.5rem;max-width:500px;background-color:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;box-shadow:var(--shadow-lg);z-index:100;display:none;flex-direction:column;gap:1rem}.cookie-banner.visible{display:flex}.cookie-actions{display:flex;gap:.75rem;justify-content:flex-end}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.badge-privacy{display:inline-flex;align-items:center;gap:.4rem;background-color:var(--color-success-bg);color:var(--color-success);border:1px solid var(--color-success-border);padding:.35rem .75rem;border-radius:9999px;font-size:.825rem;font-weight:600;margin-bottom:1rem}.dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:2.5rem 1.5rem;text-align:center;background-color:var(--color-bg-light);cursor:pointer;transition:var(--transition);position:relative}.dropzone:hover,.dropzone.dragover{border-color:var(--color-primary);background-color:var(--color-primary-light)}.dropzone-icon{font-size:2.5rem;margin-bottom:.75rem}.dropzone-title{font-size:1.1rem;font-weight:700;color:var(--color-dark-blue);margin-bottom:.25rem}.dropzone-subtitle{font-size:.875rem;color:var(--color-text-muted)}.dropzone input[type=file]{position:absolute;top:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.image-preview-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.25rem;display:flex;flex-direction:column;align-items:center;text-align:center}.image-preview-thumb{max-width:100%;max-height:260px;object-fit:contain;border-radius:var(--radius-sm);margin-bottom:1rem;box-shadow:var(--shadow-sm)}.image-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.75rem;width:100%;margin-top:1rem}.image-stat-item{background:var(--color-bg-light);padding:.6rem;border-radius:var(--radius-sm);text-align:center}.image-stat-label{font-size:.75rem;color:var(--color-text-muted);text-transform:uppercase;font-weight:600}.image-stat-value{font-size:1.1rem;font-weight:700;color:var(--color-dark-blue)}.range-group{margin:1.25rem 0}.range-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;font-size:.9rem;font-weight:600}.range-input{width:100%;height:8px;border-radius:4px;background:#e2e8f0;outline:none;-webkit-appearance:none}.range-input::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--color-primary);cursor:pointer;transition:var(--transition)}.range-input::-webkit-slider-thumb:hover{transform:scale(1.15);background:var(--color-primary-hover)}.code-box{background:#0f172a;color:#f8fafc;font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:.875rem;padding:1.25rem;border-radius:var(--radius-md);overflow-x:auto;line-height:1.5;white-space:pre-wrap;word-break:break-all;border:1px solid #1E293B;min-height:140px;max-height:450px}.code-textarea{font-family:SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;font-size:.9rem;line-height:1.5;-moz-tab-size:2;tab-size:2}.popular-badge{position:absolute;top:1rem;right:1rem;background:#fef3c7;color:#92400e;font-size:.75rem;font-weight:700;padding:.2rem .6rem;border-radius:9999px;border:1px solid #FDE68A}@media(max-width:1024px){.grid-cards{grid-template-columns:repeat(2,1fr)}.calculator-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:768px){.nav-desktop{display:none}.nav-toggle{display:block}.page-title{font-size:1.75rem}.grid-cards{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:2rem}.actions-group{flex-direction:column}.actions-group .btn{width:100%}}