:root{--text-xs:clamp(.75rem, .7rem + .25vw, .875rem);--text-sm:clamp(.875rem, .8rem + .35vw, 1rem);--text-base:clamp(1rem, .95rem + .25vw, 1.125rem);--text-lg:clamp(1.125rem, 1rem + .75vw, 1.5rem);--text-xl:clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);--text-2xl:clamp(2rem, 1.2rem + 2.5vw, 3.25rem);--text-3xl:clamp(2.5rem, 1rem + 4vw, 4.25rem);--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--space-24:6rem;--space-32:8rem;--color-bg:#fff;--color-surface:#fff;--color-surface-2:#fffdf8;--color-surface-offset:#fff6e8;--color-surface-offset-2:#fdeed6;--color-divider:#edeae3;--color-border:#e4e1d9;--color-text:#20304a;--color-text-muted:#5d6b80;--text-muted:#5d6b80;--color-text-faint:#9aa5b3;--color-text-inverse:#fff;--color-primary:#2563eb;--color-primary-hover:#1d4fc4;--color-primary-active:#16409f;--color-primary-highlight:#e8effe;--color-amber:#ea8c00;--color-amber-hover:#c77500;--color-amber-highlight:#fdeed6;--color-success:#189d58;--color-success-highlight:#ddf3e7;--color-warning:#d97706;--color-warning-highlight:#fcecd4;--color-error:#dc4a57;--color-error-highlight:#fbe1e4;--color-blue:#2563eb;--color-blue-highlight:#e8effe;--grade-a:#189d58;--grade-b:#2563eb;--grade-c:#d99a06;--grade-d:#ea7317;--grade-f:#dc4a57;--radius-sm:.5rem;--radius-md:.75rem;--radius-lg:1rem;--radius-xl:1.5rem;--radius-full:9999px;--transition-interactive:.18s cubic-bezier(.16, 1, .3, 1);--shadow-sm:0 1px 3px #2b3b5514;--shadow-md:0 6px 16px #2b3b551a;--shadow-lg:0 16px 40px #2b3b5524;--content-narrow:680px;--content-default:980px;--content-wide:1200px;--font-display:"Cabinet Grotesk", "Helvetica Neue", sans-serif;--font-body:"Satoshi", "Helvetica Neue", sans-serif}@supports (color:lab(0% 0 0)){:root{--shadow-sm:0 1px 3px lab(24.3213% -.466704 -17.901/.08);--shadow-md:0 6px 16px lab(24.3213% -.466704 -17.901/.1);--shadow-lg:0 16px 40px lab(24.3213% -.466704 -17.901/.14)}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;scroll-behavior:smooth;scroll-padding-top:var(--space-16)}body{min-height:100dvh;line-height:1.6;font-family:var(--font-body,sans-serif);font-size:var(--text-base);color:var(--color-text);background-color:var(--color-bg)}img,picture,video,canvas,svg{max-width:100%;height:auto;display:block}input,button,textarea,select{font:inherit;color:inherit}h1,h2,h3,h4,h5,h6{text-wrap:balance;line-height:1.12;font-family:var(--font-display);font-weight:800}p,li,figcaption{text-wrap:pretty;max-width:72ch}a{color:var(--color-primary);text-underline-offset:2px;text-decoration-thickness:1px}::selection{background:oklch(from var(--color-primary) l c h / .25);color:var(--color-text)}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px;border-radius:var(--radius-sm)}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}button{cursor:pointer;background:0 0;border:none}table{border-collapse:collapse;width:100%}a,button,[role=button],input,textarea,select{transition:color var(--transition-interactive), background var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%;max-width:var(--content-wide);padding-inline:clamp(var(--space-4), 4vw, var(--space-8));margin-inline:auto}.container-narrow{width:100%;max-width:var(--content-narrow);padding-inline:clamp(var(--space-4), 4vw, var(--space-8));margin-inline:auto}.container-default{width:100%;max-width:var(--content-default);padding-inline:clamp(var(--space-4), 4vw, var(--space-8));margin-inline:auto}.section{padding-block:clamp(var(--space-10), 6vw, var(--space-24))}.section-cream{background:var(--color-surface-offset)}.section-blue-tint{background:var(--color-primary-highlight)}.eyebrow{font-size:var(--text-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--color-amber);font-weight:700}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-6);box-shadow:var(--shadow-sm)}.btn{justify-content:center;align-items:center;gap:var(--space-2);font-size:var(--text-sm);padding:var(--space-3) var(--space-6);border-radius:var(--radius-full);font-weight:700;text-decoration:none;display:inline-flex}.btn-primary{background:var(--color-primary);color:var(--color-text-inverse);box-shadow:var(--shadow-sm)}.btn-primary:hover{background:var(--color-primary-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-secondary{background:var(--color-surface);color:var(--color-primary);border:2px solid var(--color-primary-highlight)}.btn-secondary:hover{border-color:var(--color-primary);background:var(--color-primary-highlight)}.btn-lg{font-size:var(--text-base);padding:var(--space-4) var(--space-8)}.tabular{font-variant-numeric:tabular-nums}.data-table th{text-align:left;font-size:var(--text-xs);letter-spacing:.05em;text-transform:uppercase;color:var(--color-text-muted);padding:var(--space-3) var(--space-4);border-bottom:2px solid var(--color-divider);font-weight:700}.data-table td{padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--color-divider);font-variant-numeric:tabular-nums}.data-table tr:last-child td{border-bottom:none}.answer-block{background:var(--color-surface-offset);border-left:4px solid var(--color-amber);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6);margin-block:var(--space-6)}.answer-block p{font-size:var(--text-base);margin:0}.grade-badge{border-radius:var(--radius-full);width:2.5rem;height:2.5rem;font-family:var(--font-display);font-size:var(--text-lg);color:#fff;justify-content:center;align-items:center;font-weight:800;display:inline-flex}.grade-a{background:var(--grade-a)}.grade-b{background:var(--grade-b)}.grade-c{background:var(--grade-c)}.grade-d{background:var(--grade-d)}.grade-f{background:var(--grade-f)}.source-line{font-size:var(--text-xs);color:var(--color-text-muted)}.source-line a{color:var(--color-text-muted)}.site-nav{align-items:center;gap:clamp(var(--space-3), 2vw, var(--space-6));min-width:0;display:flex}@media (max-width:640px){.brand-text{display:none}.site-nav{scrollbar-width:none;overflow-x:auto}.site-nav::-webkit-scrollbar{display:none}}@media (max-width:720px){.data-table{max-width:100%;display:block;overflow-x:auto}}.hero-photo{border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.hero-photo img{object-fit:cover;width:100%}.photo-card{border-radius:var(--radius-xl);background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);overflow:hidden}.photo-card img{aspect-ratio:4/3;object-fit:cover;width:100%}.photo-card-body{padding:var(--space-5) var(--space-6)}.stat-strip{gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(160px,1fr));display:grid}.stat-strip .stat{text-align:center;padding:var(--space-4)}.stat-strip .stat strong{font-family:var(--font-display);font-size:var(--text-xl);color:var(--color-primary);font-weight:800;display:block}.stat-strip .stat span{font-size:var(--text-sm);color:var(--color-text-muted)}.check-list{gap:var(--space-3);list-style:none;display:grid}.check-list li{gap:var(--space-3);align-items:flex-start;display:flex}.check-list li:before{content:"";border-radius:var(--radius-full);background:var(--color-success-highlight) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23189d58' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center / 60% no-repeat;flex:none;width:1.375rem;height:1.375rem;margin-top:2px}.step-number{border-radius:var(--radius-full);background:var(--color-amber-highlight);width:2.75rem;height:2.75rem;color:var(--color-amber);font-family:var(--font-display);font-size:var(--text-lg);margin-bottom:var(--space-4);justify-content:center;align-items:center;font-weight:800;display:inline-flex}.logo-chip{border-radius:var(--radius-md);border:1px solid var(--color-border);background:#fff;justify-content:center;align-items:center;min-width:3.25rem;max-width:11rem;height:3.25rem;padding:.5rem .75rem;display:inline-flex}.logo-chip-dark{background:var(--color-text);border-color:var(--color-text)}.logo-chip-sm{min-width:2.5rem;max-width:8.5rem;height:2.5rem;padding:.375rem .5rem}.logo-img,.logo-img-wide{object-fit:contain;width:auto;max-width:9.5rem;height:2.25rem}.logo-chip-sm .logo-img,.logo-chip-sm .logo-img-wide{max-width:7rem;height:1.6rem}.compare-wrap{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:#fff;overflow-x:auto}.compare-table{border-collapse:collapse;width:100%;min-width:56rem;font-size:var(--text-sm)}.compare-table th,.compare-table td{padding:var(--space-4);text-align:left;vertical-align:top;border-bottom:1px solid var(--color-border)}.compare-table thead th{vertical-align:middle}.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none}.compare-table thead th{background:var(--color-surface-offset);font-family:var(--font-display);font-weight:800}.compare-table tbody th[scope=row]{color:var(--text-muted);font-weight:700;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.04em;min-width:9rem}.compare-co{margin-top:var(--space-2);font-size:var(--text-sm);display:block}.compare-note{font-size:var(--text-xs);color:var(--text-muted);margin-top:2px;display:block}.compare-solar{background:var(--color-primary-highlight)}.compare-sun{font-size:1.75rem;line-height:1;display:inline-block}.cta-tile{border-radius:var(--radius-xl);padding:var(--space-8);background:linear-gradient(135deg,#fff8ec 0%,#ffedcd 55%,#ffe2ae 100%);border:1px solid #f1d9ac;box-shadow:0 1px 2px #20304a0d}.cta-tile-blue{background:linear-gradient(135deg,#f2f7ff 0%,#e4eeff 55%,#d5e5ff 100%);border-color:#c8dcff}.faq-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6)}.faq-item summary{cursor:pointer;font-weight:700;font-size:var(--text-md);justify-content:space-between;align-items:center;gap:var(--space-4);list-style:none;display:flex}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";font-family:var(--font-display);font-weight:800;font-size:var(--text-lg);color:var(--color-primary);flex-shrink:0}.faq-item[open] summary:after{content:"–"}.photo-credit{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:var(--space-2);text-align:right}