@import"https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=DM+Serif+Display&display=swap";:root{--ink: #18181B;--ink-light: #3F3F46;--ink-muted: #71717A;--surface: #FAFAFA;--surface-alt: #F4F4F5;--surface-elevated: #FFFFFF;--border: #E4E4E7;--border-strong: #D4D4D8;--accent: #F59E0B;--accent-hover: #D97706;--font-body: "DM Sans", system-ui, sans-serif;--font-display: "DM Serif Display", Georgia, serif;--gap: 1.5rem;--section-gap: 6rem;--max-width: 1140px;--content-width: 680px;--radius: 4px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);font-size:1rem;line-height:1.65;color:var(--ink);background:var(--surface);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}ul{list-style:none}img{display:block;max-width:100%}input,button,select{font:inherit}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 2rem}header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--border)}.navbar{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:var(--max-width);margin:0 auto;padding:0 2rem}.nav-container{display:contents}.logo{display:flex;align-items:center;gap:.5rem;font-family:DM Sans,system-ui,sans-serif;font-size:1.125rem;font-weight:700;letter-spacing:-.01em;color:var(--ink)}.logo:before{content:"";width:32px;height:32px;background-image:url(/hero-sun.svg);background-repeat:no-repeat;background-position:center;background-size:contain}.nav-menu{display:flex;gap:.25rem}.nav-menu a{display:block;padding:.5rem 1rem;font-size:.9375rem;font-weight:500;color:var(--ink-muted);border-radius:var(--radius)}.nav-menu a:hover{color:var(--ink);background:var(--surface-alt)}.hero{display:grid;grid-template-columns:1fr 1fr;min-height:420px;border-bottom:1px solid var(--border)}.hero .container{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:4rem;padding-top:4rem;padding-bottom:4rem}.hero-content{max-width:480px}.hero h1{font-family:var(--font-display);font-size:clamp(2.25rem,4vw,3rem);font-weight:400;line-height:1.15;color:var(--ink);margin-bottom:1.25rem}.hero p{font-size:1.125rem;color:var(--ink-muted);line-height:1.7}.hero-visual{background-color:var(--surface-alt);background-image:linear-gradient(#0000000d,#0000000d),url(/hero.png);background-repeat:no-repeat;background-position:center;background-size:cover;background-blend-mode:multiply;border-radius:var(--radius);min-height:480px;filter:grayscale(15%) contrast(105%);box-shadow:inset 0 0 0 1px #0000000d}.page-header{padding:3rem 0 1rem;background:var(--surface)}.page-header .container{max-width:var(--max-width)}.page-header h1{display:inline-block;font-family:var(--font-display);font-size:2.5rem;font-weight:400;color:var(--ink);margin-bottom:.5rem;border-bottom:2px solid var(--ink);padding-bottom:.5rem}.page-header p{font-size:1.125rem;color:var(--ink-muted);max-width:600px}.page-header+section{padding-top:2rem}.calculator-section{padding:var(--section-gap) 0;background:var(--surface)}.calculator-section h2{font-family:var(--font-display);font-size:1.75rem;font-weight:400;text-align:center;margin-bottom:3rem}.calculator-container{display:grid;grid-template-columns:5fr 4fr;gap:1px;max-width:920px;margin:0 auto;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}#solar-calculator{background:var(--surface-elevated);padding:2.5rem}.input-group{margin-bottom:1.75rem}.input-group:last-of-type{margin-bottom:2rem}.input-group label{display:block;font-size:.8125rem;font-weight:600;color:var(--ink);margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.04em}.input-group input,.input-group select{width:100%;height:48px;padding:0 1rem;font-size:1rem;color:var(--ink);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}.input-group input:focus,.input-group select:focus{outline:none;border-color:var(--ink)}.calculate-btn{display:inline-flex;align-items:center;justify-content:center;padding:0 1.5rem;height:48px;font-family:var(--font-body);font-size:.9375rem;font-weight:600;text-decoration:none;color:var(--surface-elevated);background:var(--ink);border:1px solid var(--ink);border-radius:var(--radius);cursor:pointer;transition:all .2s ease}.calculate-btn:hover{background:var(--ink-light)}.results-container{background:var(--surface-alt);padding:2.5rem;display:flex;flex-direction:column}.results-container h3{font-family:var(--font-display);font-size:1.25rem;font-weight:400;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}#results{flex:1}#results>p{color:var(--ink-muted);font-size:.9375rem}.result-item{display:flex;justify-content:space-between;align-items:baseline;padding:.875rem 0;border-bottom:1px solid var(--border)}.result-item:last-child{border-bottom:none}.result-item h4{font-size:.875rem;font-weight:500;color:var(--ink-muted)}.result-value{font-size:1.125rem;font-weight:600;color:var(--ink)}.result-item small{display:block;text-align:right;font-size:.75rem;color:var(--ink-muted);margin-top:.25rem}.calculator-types,.guides-section{padding:var(--section-gap) 0}.calculator-types{background:var(--surface-elevated);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.guides-section{background:var(--surface)}.calculator-types h2,.guides-section h2{font-family:var(--font-display);font-size:1.75rem;font-weight:400;margin-bottom:3rem}.calculator-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.calc-card{background:var(--surface);padding:2rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:160px}.calc-card:first-child{grid-row:span 2;min-height:auto;background:var(--ink)}.calc-card:first-child h3{color:var(--surface-elevated);font-size:1.375rem}.calc-card:first-child p{color:var(--ink-muted)}.calc-card h3{font-family:var(--font-display);font-size:1.125rem;font-weight:400;color:var(--ink);margin-bottom:.375rem}.calc-card p{font-size:.875rem;color:var(--ink-muted);line-height:1.5}.calc-card:hover{background:var(--surface-alt)}.calc-card:first-child:hover{background:var(--ink-light)}.guide-grid{display:flex;flex-direction:column;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.guide-card{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2rem;background:var(--surface-elevated);padding:1.5rem 2rem}.guide-card h3{font-family:var(--font-display);font-size:1.125rem;font-weight:400;color:var(--ink)}.guide-card p{font-size:.875rem;color:var(--ink-muted);margin-top:.25rem}.guide-card:after{content:"→";font-size:1.25rem;color:var(--ink-muted)}.guide-card:hover{background:var(--surface-alt)}.guide-card:hover:after{color:var(--ink)}.guide-content{padding:var(--section-gap) 0;background:var(--surface-elevated)}.guide-content article{max-width:var(--content-width);margin:0 auto}.guide-content h2{font-family:var(--font-display);font-size:1.625rem;font-weight:400;margin-top:3.5rem;margin-bottom:1rem}.guide-content h2:first-of-type{margin-top:0}.guide-content h3{font-size:1.125rem;font-weight:600;margin-top:2rem;margin-bottom:.75rem;color:var(--ink)}.guide-content p{font-size:1.0625rem;line-height:1.8;color:var(--ink-light);margin-bottom:1.25rem}.guide-content ul{margin:1.25rem 0;padding-left:1.25rem}.guide-content li{position:relative;padding-left:.75rem;margin-bottom:.625rem;font-size:1rem;line-height:1.7;color:var(--ink-light)}.guide-content li:before{content:"—";position:absolute;left:-1.25rem;color:var(--ink-muted)}.guide-content strong{font-weight:600;color:var(--ink)}.blog-article{max-width:740px;margin:0 auto;padding:0 1.5rem;background:transparent;border:none}.blog-article h2{font-family:var(--font-display);font-size:2rem;font-weight:400;margin-top:3rem;margin-bottom:1.25rem;color:var(--ink);letter-spacing:-.01em}.blog-article h2:first-child{margin-top:0}.blog-article h3{font-family:var(--font-body);font-size:1.35rem;font-weight:700;margin-top:2.5rem;margin-bottom:1rem;color:var(--ink)}.blog-article p{font-family:var(--font-body);font-size:1.125rem;line-height:1.8;color:var(--ink-light);margin-bottom:1.5rem}.blog-article ul{margin:1.5rem 0 2rem;padding-left:0;list-style:none}.blog-article li{position:relative;padding-left:1.5rem;margin-bottom:1rem;font-size:1.125rem;line-height:1.7;color:var(--ink-light)}.blog-article li:before{content:"•";position:absolute;left:0;color:var(--ink);font-weight:700}.blog-article strong{font-weight:700;color:var(--ink)}.cta-section{margin-top:4rem;padding:4rem 0;text-align:center;background:transparent;border-top:1px solid var(--border);border-bottom:1px solid var(--border);display:flex;flex-direction:column;justify-content:center;align-items:center}.cta-section .calculate-btn{display:inline-flex;align-items:center;justify-content:center;width:auto;min-width:200px;padding:0 2rem;margin-top:1.5rem}footer{padding:3rem 0;background:var(--surface);border-top:1px solid var(--border)}.footer-content{display:flex;justify-content:space-between;align-items:center;max-width:var(--max-width);margin:0 auto;padding:0 2rem}.footer-links{display:flex;gap:2rem}.footer-links a{font-size:.875rem;color:var(--ink-muted)}.footer-links a:hover{color:var(--ink)}.footer-content>p{font-size:.8125rem;color:var(--ink-muted)}.error{padding:1rem;font-size:.875rem;color:#b91c1c;background:#fef2f2;border-radius:var(--radius);text-align:center}small{display:block;font-size:.75rem;color:var(--ink-muted)}.hamburger{display:none;background:none;border:none;cursor:pointer;padding:0;flex-direction:column;gap:5px}.faq-container{max-width:800px;margin:0 auto}.faq-item{margin-bottom:2.5rem;padding-bottom:2.5rem;border-bottom:1px solid var(--border)}.faq-item:last-child{border-bottom:none}.faq-item h3{font-family:var(--font-display);font-size:1.5rem;color:var(--ink);margin-bottom:1rem;font-weight:400}.faq-item p{color:var(--ink-light);line-height:1.7}.hamburger span{display:block;width:24px;height:2px;background-color:var(--ink);transition:all .3s ease}.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.formula-card{background:var(--surface-alt);border-left:3px solid var(--ink);padding:1.5rem;margin:1.5rem 0;border-radius:0 var(--radius) var(--radius) 0}.formula-card h3{font-size:1rem;margin-top:0;margin-bottom:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-muted)}.formula-card code{display:block;font-family:Courier New,Courier,monospace;background:var(--surface-elevated);padding:1rem;border-radius:var(--radius);border:1px solid var(--border);font-size:.9375rem;color:var(--ink);margin-bottom:1rem;overflow-x:auto}.formula-card ul{font-size:.9375rem;margin:0}.formula-card li{padding-left:0;margin-bottom:.25rem}.formula-card li:before{content:none}.source-list{display:grid;gap:1.5rem;border-top:1px solid var(--border);padding-top:1.5rem}.source-list li{padding-left:0;margin-bottom:0}.source-list li:before{content:none}.source-list strong{display:block;margin-bottom:.25rem;color:var(--ink)}@media(max-width:960px){.hero .container{grid-template-columns:1fr;gap:2rem}.hero-visual{display:none}.calculator-container{grid-template-columns:1fr}.calculator-grid{grid-template-columns:1fr 1fr}.calc-card:first-child{grid-column:span 2;grid-row:span 1}}@media(max-width:768px){:root{--section-gap: 4rem}.navbar{flex-direction:row;flex-wrap:wrap;justify-content:space-between;align-items:center;padding:1rem 1.25rem}.hamburger{display:flex}.nav-menu{display:none;flex-direction:column;width:100%;text-align:center;gap:1.5rem;padding:2rem;background:var(--surface);position:absolute;top:100%;left:0;z-index:1000;border-top:1px solid var(--border);border-bottom:1px solid var(--border);box-shadow:0 4px 6px -1px #0000001a}.nav-menu.active{display:flex}.calculator-grid{grid-template-columns:1fr}.calc-card:first-child{grid-column:span 1}.guide-card{grid-template-columns:1fr;gap:.5rem}.guide-card:after{display:none}.footer-content{flex-direction:column;gap:1.5rem;text-align:center}.footer-links{flex-wrap:wrap;justify-content:center}}@media(max-width:480px){.container,.navbar,.footer-content{padding-left:1.25rem;padding-right:1.25rem}#solar-calculator,.results-container{padding:1.5rem}.calc-card,.guide-card{padding:1.25rem}}