@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap");:root{--color-primary:#c62828;--color-primary-dark:#a11d1d;--color-primary-light:#ef5350;--color-primary-glow:rgba(198,40,40,0.15);--color-bg:#f5f6fa;--color-bg-warm:#fafafa;--color-surface:#ffffff;--color-surface-elevated:#ffffff;--color-text:#1a1d2e;--color-text-secondary:#4a5068;--color-text-muted:#7c8299;--color-border:#e2e5ef;--color-border-light:#eef0f6;--color-accent:#2563eb;--color-accent-light:#3b82f6;--color-success:#059669;--color-success-bg:#ecfdf5;--color-warning:#d97706;--color-warning-bg:#fffbeb;--color-info:#0891b2;--color-info-bg:#ecfeff;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"SF Mono",SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--max-width:1140px;--header-height:64px;--radius:10px;--radius-lg:16px;--radius-xl:20px;--radius-full:9999px;--shadow-xs:0 1px 2px rgba(0,0,0,0.04);--shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.08),0 4px 6px -4px rgba(0,0,0,0.04);--shadow-xl:0 20px 25px -5px rgba(0,0,0,0.08),0 8px 10px -6px rgba(0,0,0,0.04);--shadow-glow:0 0 20px rgba(198,40,40,0.12);--shadow-card:0 1px 3px rgba(0,0,0,0.04),0 6px 16px rgba(0,0,0,0.06);--shadow-card-hover:0 4px 12px rgba(0,0,0,0.06),0 12px 28px rgba(0,0,0,0.1);--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-base:250ms cubic-bezier(0.4,0,0.2,1);--transition-slow:350ms cubic-bezier(0.4,0,0.2,1)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--color-bg);line-height:1.65;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}body,h1,h2,h3,h4{color:var(--color-text)}h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.02em}h1{font-size:1.875rem;margin-bottom:var(--space-md)}h2{font-size:1.4rem}h2,h3{font-weight:700;margin-bottom:var(--space-sm)}h3{font-size:1.125rem}p{margin-bottom:var(--space-md);color:var(--color-text-secondary)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg)}main{flex:1 1;padding:var(--space-2xl) 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var(--color-border-light);position:relative;overflow:hidden}.card:after{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-light),var(--color-accent))}.card>h1{font-size:1.35rem;margin-bottom:var(--space-sm);padding-top:var(--space-xs)}.card>p{font-size:.925rem;margin-bottom:var(--space-xl);line-height:1.7}.calc-form,.calculator-card{margin-bottom:var(--space-lg)}.calculator-card{background:var(--color-surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-card);padding:var(--space-lg);border:1px solid var(--color-border-light);position:relative;overflow:hidden}.calculator-card:after{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-light),var(--color-accent))}.form-group{margin-bottom:var(--space-lg)}.form-group 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1}.input-group .input-prefix+.form-control{border-left:none}.form-row{display:grid;grid-gap:var(--space-md);gap:var(--space-md)}.toggle-group{display:flex;flex-wrap:wrap;background:var(--color-bg);border-radius:var(--radius);padding:4px;gap:4px;border:1px solid var(--color-border-light)}.toggle-group input[type=radio]{position:absolute;opacity:0;pointer-events:none}.toggle-group label{flex:1 1 auto;text-align:center;padding:.6rem .85rem;font-size:.825rem;font-weight:600;cursor:pointer;background:transparent;color:var(--color-text-muted);border-radius:calc(var(--radius) - 2px);transition:all var(--transition-fast);margin-bottom:0;border:none;white-space:nowrap;min-height:44px;display:flex;align-items:center;justify-content:center}.toggle-group label:hover{color:var(--color-text);background:rgba(0,0,0,.03)}.toggle-group input[type=radio]:checked+label{background:var(--color-surface);color:var(--color-primary);box-shadow:var(--shadow-sm);font-weight:700}.toggle-group 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var(--color-primary)}.btn-outline:hover{background:var(--color-primary-glow);text-decoration:none}.btn-block{width:100%}.btn-sm{padding:.4rem 1rem;font-size:.825rem}.results-panel{background:linear-gradient(145deg,#f0f5ff,#eef2ff 50%,#f5f0ff);border:1px solid rgba(37,99,235,.12);border-radius:var(--radius-xl);padding:var(--space-lg);margin-top:var(--space-xl);animation:slideUp .35s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.results-panel h2{color:var(--color-accent);font-size:1.05rem;font-weight:800;margin-bottom:var(--space-md);display:flex;align-items:center;gap:var(--space-sm)}.results-panel h3{font-size:.95rem;font-weight:700;color:var(--color-text);margin-top:var(--space-lg);margin-bottom:var(--space-sm);padding-top:var(--space-sm);border-top:1px solid rgba(0,0,0,.06)}.results-panel hr{border:none;height:1px;background:rgba(0,0,0,.08);margin:var(--space-md) 0}.result-row{display:flex;justify-content:space-between;align-items:baseline;padding:.6rem 0;border-bottom:1px solid rgba(0,0,0,.05);gap:var(--space-md)}.result-row.total,.result-row:last-child{border-bottom:none}.result-row.total{border-top:2px solid rgba(37,99,235,.15);margin-top:var(--space-sm);padding-top:var(--space-md)}.result-label{font-size:.875rem;color:var(--color-text-muted);font-weight:500;flex-shrink:1;min-width:0}.result-value{font-size:1.05rem;font-weight:700;color:var(--color-text);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:right;flex-shrink:0}.result-value.highlight{font-size:1.3rem;color:var(--color-primary);font-weight:800}.result-featured{text-align:center;padding:var(--space-lg);margin:var(--space-md) 0;background:rgba(255,255,255,.6);border-radius:var(--radius-lg);border:1px solid rgba(37,99,235,.08)}.result-featured 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var(--space-xs);white-space:nowrap;overflow:hidden;text-shadow:0 1px 2px rgba(0,0,0,.2)}.why-section{margin-top:var(--space-3xl);text-align:center}.why-section h2{font-size:1.6rem;margin-bottom:var(--space-2xl);color:var(--color-text)}.differentiators{display:grid;grid-template-columns:1fr;grid-gap:var(--space-lg);gap:var(--space-lg);text-align:left}.differentiator{padding:var(--space-lg);border-radius:var(--radius-lg);background:var(--color-surface);border:1px solid var(--color-border-light);transition:all var(--transition-base);box-shadow:var(--shadow-xs)}.differentiator:hover{border-color:var(--color-border);box-shadow:var(--shadow-md)}.differentiator h3{font-size:1rem;font-weight:800;color:var(--color-text);margin-bottom:.35rem}.differentiator p{font-size:.875rem;color:var(--color-text-muted);margin-bottom:0;line-height:1.6}.faq-section{margin-top:var(--space-3xl)}.faq-section h2{font-size:1.4rem;margin-bottom:var(--space-lg);text-align:center}.faq-items{max-width:720px;margin:0 auto}.faq-items details{border-bottom:1px solid var(--color-border-light)}.faq-items details summary{font-weight:600;cursor:pointer;font-size:.95rem;padding:var(--space-md) 0;list-style:none;display:flex;justify-content:space-between;align-items:center;color:var(--color-text);transition:color var(--transition-fast)}.faq-items details summary:hover{color:var(--color-primary)}.faq-items details summary:after{content:"+";font-size:1.25rem;color:var(--color-text-muted);transition:transform var(--transition-fast);flex-shrink:0;margin-left:var(--space-md)}.faq-items details[open] summary:after{content:"\2212";color:var(--color-primary)}.faq-items details p{padding:0 0 var(--space-md) 0;font-size:.9rem;color:var(--color-text-muted);line-height:1.75}.tool-page{max-width:740px;margin:0 auto}.tool-page>h1{text-align:center;font-size:1.75rem}.tool-description{text-align:center;max-width:600px;margin:0 auto var(--space-xl);color:var(--color-text-muted)}.site-footer{background:var(--color-text);color:#9ca3af;padding:var(--space-2xl) 0;font-size:.85rem;margin-top:auto}.site-footer a{color:#d1d5db;transition:color var(--transition-fast)}.site-footer a:hover{color:#ffffff;text-decoration:none}.footer-content{justify-content:space-between}.footer-content,.footer-links{display:flex;flex-wrap:wrap;gap:var(--space-lg)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-small{font-size:.825rem}.mt-1{margin-top:var(--space-md)}.mt-2{margin-top:var(--space-xl)}.mb-1{margin-bottom:var(--space-md)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.error-alert{color:#b91c1c;background:#fef2f2;border-left:4px solid #dc2626;margin-bottom:var(--space-md);animation:slideUp .25s 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10px;border-radius:var(--radius-full);font-size:.75rem;font-weight:700;color:#fff;letter-spacing:.02em}.nav-link{color:var(--color-text-secondary);font-size:.875rem;font-weight:600;padding:.4rem .75rem;border-radius:var(--radius);transition:all var(--transition-fast);text-decoration:none;white-space:nowrap;background:none;border:none;cursor:pointer;font-family:var(--font-sans);display:inline-flex;align-items:center;gap:.3rem}.nav-link.active,.nav-link:hover{color:var(--color-primary);background:var(--color-primary-glow);text-decoration:none}.nav-link--all{color:var(--color-accent);font-weight:700}.nav-dropdown{position:relative}.dropdown-chevron{transition:transform var(--transition-fast);flex-shrink:0}.dropdown-chevron--open{transform:rotate(180deg)}.dropdown-menu{position:absolute;top:calc(100% + 6px);left:0;min-width:240px;background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:var(--space-xs);z-index:200;animation:dropdownFade .15s ease-out}@keyframes dropdownFade{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.dropdown-item{display:block;padding:.6rem .85rem;font-size:.875rem;font-weight:500;color:var(--color-text-secondary);border-radius:calc(var(--radius-lg) - 2px);transition:all var(--transition-fast);text-decoration:none}.dropdown-item:hover{background:var(--color-bg);color:var(--color-text);text-decoration:none}.dropdown-item.active{background:var(--color-primary-glow);color:var(--color-primary);font-weight:600}.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;z-index:110}.hamburger{display:block;position:relative;transition:background 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.65rem;border-radius:var(--radius-full);letter-spacing:.02em}.section-link{font-size:.875rem;font-weight:600;color:var(--color-accent);text-decoration:none}.section-link:hover{text-decoration:underline}.hero-actions{margin-top:var(--space-lg);position:relative;z-index:1}a.tool-card{display:flex;flex-direction:column}a.tool-card,a.tool-card:hover{color:inherit;text-decoration:none}.tool-card-icon{font-size:2rem;margin-bottom:.75rem}.tool-card h3{font-size:1.1rem;font-weight:800;color:var(--color-text);margin-bottom:var(--space-sm)}.tool-card-arrow{margin-top:auto;font-size:1.1rem;color:var(--color-primary);font-weight:700;opacity:0;transform:translateX(-4px);transition:all var(--transition-fast)}.tool-card:hover .tool-card-arrow{opacity:1;transform:translateX(0)}.category-chips{flex-wrap:wrap}.category-chip,.category-chips{display:flex;gap:var(--space-sm)}.category-chip{align-items:center;padding:.65rem 1rem;background:var(--color-surface);border:1px solid 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