:root{--color-primary: #1d6f5c;--color-primary-dark: #14523f;--color-accent: #2fa886;--color-bg: #ffffff;--color-bg-alt: #f2f7f5;--color-text: #1d2a30;--color-text-muted: #55676f;--color-border: #dde7e3;--color-error: #b3261e;--radius: 12px;--shadow-sm: 0 1px 2px rgba(20, 60, 50, .06);--shadow-md: 0 6px 18px rgba(20, 60, 50, .1);--max-width: 72rem;--font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--cat-pintura-c: #7d5bd4;--cat-suelos-c: #a9752f;--cat-construccion-c: #c25b4a;--cat-clima-c: #2f7fc0;--cat-energia-c: #d09204}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);font-size:1.0625rem;line-height:1.65;color:var(--color-text);background:var(--color-bg)}img{max-width:100%;height:auto}a{color:var(--color-primary)}a:hover{color:var(--color-primary-dark)}h1,h2,h3{line-height:1.25;color:var(--color-text)}h1{font-size:clamp(1.7rem,4vw,2.3rem);margin:0 0 .75rem;letter-spacing:-.015em}h2{font-size:1.4rem;margin-top:2.4rem}h3{font-size:1.15rem}.skip-link{position:absolute;left:-999px;top:0;background:var(--color-primary);color:#fff;padding:.5rem 1rem;z-index:100}.skip-link:focus{left:.5rem;top:.5rem}.container{max-width:var(--max-width);margin:0 auto;padding:0 1rem}.site-header{border-bottom:1px solid var(--color-border);background:#ffffffeb;backdrop-filter:blur(6px);position:sticky;top:0;z-index:50}.site-header .container{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.5rem;padding-top:.7rem;padding-bottom:.7rem}.site-logo{display:inline-flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.22rem;text-decoration:none;color:var(--color-text);letter-spacing:-.01em}.site-logo .logo-mark{display:grid;place-items:center;width:2rem;height:2rem;border-radius:9px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;box-shadow:var(--shadow-sm)}.site-logo 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0;font-size:.95rem}.table-wrap{overflow-x:auto}caption{caption-side:bottom;font-size:.82rem;color:var(--color-text-muted);padding-top:.4rem}th,td{border:1px solid var(--color-border);padding:.55rem .8rem;text-align:left}th{background:var(--color-bg-alt)}tbody tr:nth-child(2n){background:#fafcfb}.formula{background:linear-gradient(135deg,#f0f7f4,#e9f3ef);border:1px solid var(--color-border);border-radius:8px;padding:.8rem 1.1rem;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.95rem;overflow-x:auto}.faq details{border:1px solid var(--color-border);border-radius:8px;padding:.65rem 1rem;margin-bottom:.6rem;background:#fff}.faq details[open]{box-shadow:var(--shadow-sm)}.faq summary{font-weight:600;cursor:pointer}.card-grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(16.5rem,1fr));padding:0;list-style:none}.card{display:flex;gap:.85rem;align-items:flex-start;border:1px solid var(--color-border);border-radius:var(--radius);padding:1.1rem 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2.25rem;font-size:.9rem;color:var(--color-text-muted)}.site-footer ul{display:flex;flex-wrap:wrap;gap:.4rem 1.25rem;list-style:none;margin:0 0 1rem;padding:0}.site-footer a{text-decoration:none}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}.card:hover{transform:none}}