*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--navy:#0f172a;--white:#fff;--emerald:#10b981;--emerald-dark:#059669;--red:#ef4444;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--radius:12px;--radius-sm:8px;--radius-lg:16px}html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;color:var(--navy);background:var(--gray-50);line-height:1.6;-webkit-font-smoothing:antialiased}body{min-height:100vh;display:flex;flex-direction:column}main{flex:1}.container{max-width:1100px;margin:0 auto;padding:0 1.25rem}.site-header{background:var(--navy);color:var(--white);padding:.875rem 0;position:sticky;top:0;z-index:50}.site-header .container{display:flex;justify-content:space-between;align-items:center}.site-logo{font-size:1.375rem;font-weight:800;color:var(--white);text-decoration:none;letter-spacing:-.02em}.site-logo span{color:var(--emerald)}.nav-links{display:flex;gap:1.25rem;list-style:none}.nav-links a{color:var(--gray-400);text-decoration:none;font-size:.8125rem;font-weight:500;transition:color .15s}.nav-links a:hover,.nav-links a[aria-current=page]{color:var(--white)}.nav-details{position:relative}.nav-details summary{display:none;list-style:none}.nav-details summary::-webkit-details-marker{display:none}.hero{background:var(--navy);color:var(--white);padding:4rem 0 3.5rem;text-align:center}.hero h1{font-size:2.5rem;font-weight:800;margin-bottom:.75rem;line-height:1.2;letter-spacing:-.02em}.hero .subtitle{font-size:1.125rem;color:var(--gray-300);max-width:560px;margin:0 auto;line-height:1.7}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.25rem;padding:3rem 0}.tools-grid .tools-title{grid-column:1/-1;font-size:1.5rem;font-weight:700;color:var(--navy);margin-bottom:.25rem}.tool-card{background:var(--white);border-radius:var(--radius);padding:1.75rem;box-shadow:var(--shadow);text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column;gap:.5rem;border:1px solid var(--gray-200)}.tool-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.tool-card h3{font-size:1.125rem;font-weight:700;color:var(--emerald)}.tool-card p{color:var(--gray-500);font-size:.9375rem;line-height:1.6}.page-header{padding:3rem 0 1rem}.page-header h1{font-size:2rem;font-weight:800;margin-bottom:.5rem;line-height:1.2;letter-spacing:-.02em}.page-header .intro{color:var(--gray-500);font-size:1.0625rem;max-width:700px;line-height:1.7}.calc-card{background:var(--white);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);margin-bottom:2rem;border:1px solid var(--gray-200)}.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.25rem}.form-group{display:flex;flex-direction:column;gap:.25rem}.form-group label{font-size:.75rem;font-weight:600;color:var(--gray-500);text-transform:uppercase;letter-spacing:.06em}.form-group input,.form-group select{padding:.625rem .75rem;border:1.5px solid var(--gray-200);border-radius:var(--radius-sm);font-size:.9375rem;color:var(--navy);background:var(--white);transition:border-color .15s,box-shadow .15s;font-family:inherit}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--emerald);box-shadow:0 0 0 3px #10b98126}.results-heading{font-size:.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--gray-400);margin-top:2rem;margin-bottom:.75rem;padding-bottom:.5rem;border-bottom:2px solid var(--gray-100)}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem}.result-card{background:var(--gray-50);border-radius:var(--radius);padding:1.25rem 1rem;text-align:center;border:1px solid var(--gray-100)}.result-card .label{font-size:.6875rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--gray-500);margin-bottom:.25rem}.result-card .value{font-size:1.625rem;font-weight:800;color:var(--navy);line-height:1.3}.result-card .value.positive{color:var(--emerald)}.result-card .value.negative{color:var(--red)}.result-card .value.highlight{color:var(--emerald);font-size:2rem}.result-card .note{font-size:.75rem;color:var(--gray-600);margin-top:.25rem}.ad-slot{min-height:90px;border:2px dashed var(--gray-200);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--gray-600);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;margin:2rem 0;padding:1rem;font-weight:600}@media(min-width:768px){.ad-slot{min-height:100px}}.section{padding:2.5rem 0}.section h2{font-size:1.5rem;font-weight:700;margin-bottom:.75rem}.section h3{font-size:1.0625rem;font-weight:600;margin-bottom:.5rem;margin-top:1.5rem}.section p,.section li{color:var(--gray-600);line-height:1.75}.section ul,.section ol{padding-left:1.5rem;margin-bottom:1rem}.section li{margin-bottom:.375rem}.section code{background:var(--gray-100);padding:.125rem .375rem;border-radius:4px;font-size:.875rem;font-family:SF Mono,SFMono-Regular,Menlo,Consolas,monospace}.section .formula{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-sm);padding:1rem 1.25rem;margin:.75rem 0;font-family:SF Mono,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875rem;color:var(--navy);overflow-x:auto;line-height:1.8}.faq-item{border-bottom:1px solid var(--gray-200);padding:1.25rem 0}.faq-item:last-child{border-bottom:none}.faq-item h3{font-size:1rem;font-weight:600;margin-bottom:.375rem;color:var(--navy)}.faq-item p{color:var(--gray-500);font-size:.9375rem;line-height:1.7}.table-wrapper{overflow-x:auto;margin:1.5rem 0;border-radius:var(--radius-sm);border:1px solid var(--gray-200)}table{width:100%;border-collapse:collapse;font-size:.8125rem}th,td{padding:.625rem .75rem;text-align:right;border-bottom:1px solid var(--gray-100);white-space:nowrap}th{background:var(--gray-50);font-weight:600;text-transform:uppercase;font-size:.6875rem;letter-spacing:.06em;color:var(--gray-500);position:sticky;top:0}th:first-child,td:first-child{text-align:left}tr:last-child td{border-bottom:none}tr:hover td{background:var(--gray-50)}.table-total td{font-weight:700;border-top:2px solid var(--gray-300);background:var(--gray-50)}.compare-bar{display:flex;gap:.5rem;align-items:center;margin-bottom:.25rem}.compare-bar .bar{height:14px;border-radius:3px;transition:width .3s ease;min-width:2px}.compare-bar .bar.buy{background:var(--navy)}.compare-bar .bar.rent{background:#cbd5e1}.compare-bar .bar-label{font-size:.75rem;color:var(--gray-600);min-width:2.5rem}.compare-cell{min-width:160px;vertical-align:middle}.compare-cell .compare-bar{margin-bottom:3px}.compare-cell .compare-bar:last-child{margin-bottom:0}.internal-links{display:flex;flex-wrap:wrap;gap:.625rem;margin-top:1rem}.internal-links a{display:inline-block;padding:.5rem 1rem;background:var(--gray-100);border-radius:var(--radius-sm);color:var(--navy);text-decoration:none;font-size:.875rem;font-weight:500;transition:background .15s;border:1px solid var(--gray-200)}.internal-links a:hover{background:var(--gray-200)}.breadcrumbs{margin:0 auto;padding:1rem 1.25rem .25rem;max-width:1100px}.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:.375rem;padding:0}.breadcrumbs li{display:flex;align-items:center;gap:.375rem;font-size:.8125rem;color:var(--gray-500)}.breadcrumbs li+li:before{content:"/";color:var(--gray-300)}.breadcrumbs a{color:var(--gray-500);text-decoration:none}.breadcrumbs a:hover{color:var(--emerald-dark);text-decoration:underline}.breadcrumbs [aria-current=page]{color:var(--gray-700);font-weight:500}.promo-card{background:var(--white);border:1px solid var(--gray-200);border-left:4px solid var(--emerald);border-radius:var(--radius);padding:1.5rem;margin:2rem 0;box-shadow:var(--shadow-sm)}.promo-card h2{font-size:1.125rem;font-weight:700;color:var(--navy);margin:0 0 .375rem}.promo-card p{color:var(--gray-600);font-size:.9375rem;line-height:1.7;margin-bottom:.875rem}.btn{display:inline-block;padding:.625rem 1.125rem;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600;text-decoration:none;text-align:center;border:1.5px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s;font-family:inherit;line-height:1.4}.btn:hover{filter:brightness(1.05)}.btn-primary{background:var(--navy);color:var(--white)}.btn-primary:hover{background:var(--gray-700);filter:none}.btn-outline{background:transparent;color:var(--navy);border-color:var(--navy)}.btn-outline:hover{background:var(--navy);color:var(--white);filter:none}.site-footer{background:var(--navy);color:var(--gray-400);padding:3rem 0 1.75rem;margin-top:3rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem;margin-bottom:2rem}.footer-brand p{font-size:.875rem;line-height:1.7;margin-top:.75rem}.footer-links h3{color:var(--white);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.75rem}.footer-links ul{list-style:none}.footer-links li{margin-bottom:.375rem}.footer-links a{color:var(--gray-400);text-decoration:none;font-size:.875rem;transition:color .15s}.footer-links a:hover{color:var(--emerald)}.footer-bottom{border-top:1px solid var(--gray-700);padding-top:1.25rem;font-size:.8125rem;text-align:center;color:var(--gray-400)}@media(max-width:768px){.hero{padding:2.5rem 0 2rem}.hero h1{font-size:1.75rem}.hero .subtitle{font-size:1rem}.tools-grid{grid-template-columns:1fr;padding:2rem 0}.footer-grid{grid-template-columns:1fr}.nav-details summary{display:flex;align-items:center;gap:.375rem;background:var(--gray-800);color:var(--gray-300);border:1.5px solid var(--gray-600);border-radius:var(--radius-sm);padding:.5rem .875rem;font-size:.875rem;font-weight:500;cursor:pointer}.nav-links{display:none}.nav-links a{display:block;padding:.375rem .875rem}.nav-details[open] .nav-links{display:flex;flex-direction:column;gap:.25rem;position:absolute;top:calc(100% + .5rem);right:0;z-index:60;min-width:220px;background:var(--navy);border:1.5px solid var(--gray-700);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:.5rem}.calc-grid{grid-template-columns:1fr}.results-grid{grid-template-columns:1fr 1fr}.results-grid .value.highlight{font-size:1.375rem}.page-header h1{font-size:1.5rem}.result-card .value{font-size:1.375rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.mt-2{margin-top:1rem}