:root{--color-background:#f8fafc;--color-surface:#fff;--color-primary:#0f172a;--color-primary-dark:#020617;--color-secondary:#4b41e1;--color-success:#10b981;--color-success-bg:#10b9811a;--color-warning:#f59e0b;--color-warning-bg:#f59e0b1a;--color-text-main:#0f172a;--color-text:#334155;--color-danger:#dc2626;--color-bg-secondary:#f1f5f9;--color-warning-light:#fef3c7;--color-text-muted:#64748b;--color-border:#e2e8f0;--font-main:"Geist", sans-serif;--shadow-card:0 4px 6px -1px #0f172a0d, 0 2px 4px -2px #0f172a0d;--shadow-hover:0 10px 15px -3px #0f172a14, 0 4px 6px -2px #0f172a0a;--radius-sm:8px;--radius-lg:16px;--radius-xl:24px}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-background);color:var(--color-text-main);font-family:var(--font-main);-webkit-font-smoothing:antialiased;line-height:1.5}h1,h2,h3,h4,h5,h6{letter-spacing:-.02em;font-weight:600}input,button,select{font-family:inherit}.layout-container{grid-template-columns:1fr;gap:32px;max-width:1280px;margin:0 auto;padding:48px 24px;display:grid}.layout-container>*{min-width:0}@media (width>=1024px){.layout-container{grid-template-columns:360px 1fr}}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:24px;transition:all .2s ease-in-out}.card:hover{box-shadow:var(--shadow-hover)}.input-group{margin-bottom:24px}.input-group label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;font-size:14px;font-weight:500;display:block}.input-field{border:1px solid var(--color-border);border-radius:var(--radius-sm);width:100%;color:var(--color-text-main);background:#f1f5f9;padding:12px 16px;font-size:16px;font-weight:500;transition:border-color .2s}.input-field:focus,.input-field:focus-within{border-color:var(--color-secondary);outline:none}.input-prefix-wrapper{align-items:center;width:100%;display:flex;position:relative}.input-prefix{color:var(--color-text-muted);pointer-events:none;z-index:10;font-weight:500;position:absolute;left:16px}.input-suffix{color:var(--color-text-muted);pointer-events:none;z-index:10;font-weight:500;position:absolute;right:16px}.input-prefix-wrapper input.input-field{width:100%}.input-prefix-wrapper input.input-field.has-prefix{padding-left:32px}.input-prefix-wrapper input.input-field.has-suffix{padding-right:32px}.input-with-prefix{align-items:center;width:100%;display:flex;position:relative}.input-with-prefix input.input-field{width:100%;padding-left:32px}.btn{border-radius:var(--radius-sm);cursor:pointer;border:none;justify-content:center;align-items:center;min-height:44px;padding:12px 24px;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:#1e293b}.btn-outline{border:1px solid var(--color-secondary);color:var(--color-secondary);background:#fff}.btn-outline:hover{background:#f8faff}.banner{border-radius:var(--radius-sm);align-items:flex-start;gap:12px;margin-bottom:16px;padding:16px;font-size:14px;display:flex}.banner-warning{background:var(--color-warning-bg);color:#b45309;border:1px solid #f59e0b33}.banner-success{background:var(--color-success-bg);color:#047857;border:1px solid #10b98133}.mono-data{font-variant-numeric:tabular-nums;letter-spacing:-.01em;font-weight:600}input[type=range]{-webkit-appearance:none;background:0 0;width:100%}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;background:var(--color-secondary);cursor:pointer;border-radius:50%;width:24px;height:24px;margin-top:-8px;box-shadow:0 2px 4px #0003}input[type=range]::-webkit-slider-runnable-track{cursor:pointer;background:#e2e8f0;border-radius:4px;width:100%;height:8px}.scenario-grid{grid-template-columns:1fr;gap:24px;display:grid}@media (width>=768px){.scenario-grid{grid-template-columns:1fr 1fr}}.data-row{border-bottom:1px solid var(--color-border);justify-content:space-between;padding:12px 0;display:flex}.data-row:last-child{border-bottom:none}.data-label{color:var(--color-text-muted);font-size:14px}.data-value{color:var(--color-primary);font-size:16px}.primary-result{text-align:center;background:var(--color-primary);color:#fff;border-radius:var(--radius-xl);margin-bottom:32px;padding:32px}.floating-result{background:var(--color-primary);color:#fff;border-radius:var(--radius-lg);z-index:1000;flex-direction:column;align-items:flex-end;padding:16px 24px;animation:.3s cubic-bezier(.16,1,.3,1) forwards slideUp;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 10px 25px -5px #0f172a33,0 8px 10px -6px #0f172a1a}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.primary-result h2{margin:16px 0;font-size:48px}.primary-result p{color:#cbd5e1}.section-header{margin-bottom:24px;font-size:24px}.faq-btn{cursor:pointer;text-align:left;width:100%;color:var(--color-primary);background:#fff;border:none;justify-content:space-between;align-items:center;padding:20px 24px;font-size:16px;font-weight:600;transition:all .2s;display:flex}.faq-btn:hover{color:var(--color-secondary);background:#f8fafc}.faq-btn.active{border-bottom:1px solid var(--color-border);background:#f8fafc}.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border)}.site-header-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;max-width:1280px;margin:0 auto;padding:12px 24px;display:flex}.site-brand{color:var(--color-primary);letter-spacing:-.02em;align-items:center;gap:10px;font-size:17px;font-weight:700;text-decoration:none;display:inline-flex}.site-nav{scrollbar-width:none;gap:4px;max-width:100%;display:flex;overflow-x:auto}.site-nav a{border-radius:var(--radius-sm);color:var(--color-text-muted);white-space:nowrap;padding:8px 12px;font-size:14px;font-weight:500;text-decoration:none}.site-nav a:hover{color:var(--color-primary);background:var(--color-bg-secondary)}.site-nav a[aria-current=page]{color:var(--color-secondary);background:#4b41e114}@media (width<=640px){.site-header-inner{padding:12px 16px}.site-nav{max-width:calc(100% + 32px);margin:0 -16px;padding:0 12px}}.site-footer{border-top:1px solid var(--color-border);background-color:var(--color-bg-secondary);color:var(--color-text-muted);margin-top:64px;padding:40px 24px 32px;font-size:14px}.site-footer-grid{grid-template-columns:1fr;gap:32px;max-width:1280px;margin:0 auto;display:grid}@media (width>=768px){.site-footer-grid{grid-template-columns:2fr 1.2fr 1fr 1fr}}.site-footer-grid nav{flex-direction:column;gap:8px;display:flex}.site-footer-grid a{color:var(--color-text);text-decoration:none}.site-footer-grid a:hover{color:var(--color-secondary);text-decoration:underline}.site-footer-brand,.site-footer-heading{color:var(--color-primary);margin-bottom:8px;font-weight:600}.site-footer-disclaimer{border-top:1px solid var(--color-border);max-width:1280px;margin:32px auto 0;padding-top:16px;font-size:12px;font-style:italic}.related-calculators{max-width:1280px;margin:48px auto 0;padding:0 24px}.related-calculators h2{color:var(--color-primary);margin-bottom:16px;font-size:22px}.related-grid{grid-template-columns:1fr;gap:16px;display:grid}@media (width>=768px){.related-grid{grid-template-columns:repeat(3,1fr)}}.related-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);flex-direction:column;gap:6px;padding:20px;text-decoration:none;transition:border-color .2s,box-shadow .2s;display:flex}.related-card:hover{border-color:var(--color-secondary);box-shadow:var(--shadow-hover)}.related-card-title{color:var(--color-primary);font-weight:600}.related-card-desc{color:var(--color-text-muted);font-size:14px;line-height:1.5}.content-section{max-width:800px;color:var(--color-text);margin:48px auto 0;padding:0 24px;font-size:16px;line-height:1.7}.content-section h2{color:var(--color-primary);margin:40px 0 12px;font-size:24px}.content-section h3{color:var(--color-primary);margin:24px 0 8px;font-size:18px}.content-section p,.content-section ul,.content-section ol,.content-section table{margin-bottom:16px}.content-section ul,.content-section ol{padding-left:24px}.content-section a{color:var(--color-secondary)}.content-section table{border-collapse:collapse;width:100%;font-size:15px}.content-section th,.content-section td{text-align:left;border-bottom:1px solid var(--color-border);padding:10px 12px}.content-section th{color:var(--color-primary);font-weight:600}.updated-stamp{color:var(--color-text-muted);font-size:13px}.content-section h1{color:var(--color-primary);margin:8px 0;font-size:34px;line-height:1.2}.guide .updated-stamp{margin-bottom:24px}.breadcrumbs{color:var(--color-text-muted);font-size:14px}.breadcrumbs a{color:var(--color-text-muted);text-decoration:none}.breadcrumbs a:hover{color:var(--color-secondary);text-decoration:underline}.guide-cta{border:1px solid var(--color-border);border-left:4px solid var(--color-secondary);border-radius:var(--radius-lg);background:var(--color-surface);margin:40px 0;padding:24px}.guide-cta-title{color:var(--color-primary);font-size:18px;font-weight:600;margin-bottom:4px!important}.content-section .guide-cta .btn{color:#fff;text-decoration:none}.guide-disclaimer{border-top:1px solid var(--color-border);color:var(--color-text-muted);margin-top:40px;padding-top:16px;font-size:13px;font-style:italic}.guide-list{grid-template-columns:1fr;gap:12px;margin-bottom:16px;display:grid}.content-section .related-card{text-decoration:none}@media (width<=640px){.content-section{padding:0 16px}.content-section h1{font-size:28px}}