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var(--ink-700);background:var(--ink-700);color:#fff;border-radius:8px;flex:1;min-width:0;padding:10px 12px;font-size:.88rem}.newsletter input::placeholder{color:var(--ink-300)}.footer-bottom{border-top:1px solid #1e293b;flex-wrap:wrap;justify-content:space-between;gap:16px;padding-top:22px;font-size:.84rem;display:flex}.footer-bottom nav{gap:18px;display:flex}.footer-bottom a{color:var(--ink-300)}@media(max-width:1024px){.grid-5{grid-template-columns:repeat(3,1fr)}.shape-grid{grid-template-columns:repeat(5,1fr)}.calc-layout{grid-template-columns:1fr}.cost-grid{grid-template-columns:repeat(3,1fr)}.footer-grid,.material-grid{grid-template-columns:1fr 1fr}.link-hub{grid-template-columns:repeat(3,1fr)}}@media(max-width:820px){.nav-links,.nav-cta{display:none}.nav-toggle{display:block}.nav.is-open .nav-links{border-bottom:1px solid var(--ink-100);box-shadow:var(--shadow-md);background:#fff;flex-direction:column;padding:12px 20px 18px;display:flex;position:absolute;top:66px;left:0;right:0}.calc-form-card{padding:24px 20px}.steps,.split-2,.widget-row{grid-template-columns:1fr}.grid-4,.grid-3{grid-template-columns:1fr 1fr}.section{padding:44px 0}}@media(max-width:560px){.grid-5,.grid-4,.grid-3,.material-grid,.link-hub{grid-template-columns:1fr 1fr}.shape-grid{grid-template-columns:repeat(3,1fr)}.fields-2col,.cost-grid{grid-template-columns:1fr}.ratio-cards,.grade-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1fr}}.calc-page-hero{background:linear-gradient(135deg,#1e3fae 0%,var(--blue-600) 55%,var(--blue-500) 100%);color:#fff;padding:44px 0 64px}.calc-page-hero h1{color:#fff;margin-bottom:10px;font-size:clamp(1.7rem,3.4vw,2.3rem)}.calc-page-hero p{color:#dbeafe;max-width:820px;margin:0}.breadcrumbs{color:#bfdbfe;margin-bottom:14px;font-size:.82rem}.breadcrumbs a{color:#dbeafe}.breadcrumbs span[aria-hidden]{opacity:.6;margin:0 6px}.calc-page-layout{grid-template-columns:1.5fr 1fr;align-items:start;gap:26px;margin-top:-34px;padding-bottom:8px;display:grid}.calc-page-layout .calc-form-card{border:1px solid var(--ink-100)}.calc-page-results{background:var(--ink-900);border-radius:var(--radius);color:#fff;box-shadow:var(--shadow-lg);padding:24px;position:sticky;top:86px}.calc-page-results h3{color:#fff;align-items:center;gap:9px;margin-bottom:14px;font-size:1.05rem;display:flex}.calc-page-results .result-row{background:#ffffff12;border-color:#ffffff1a}.calc-page-results .result-row--cost{background:#f59e0b33;border-color:#f59e0b66}.locked-note{background:var(--blue-50);border:1px solid var(--blue-100);border-radius:var(--radius-sm);color:var(--ink-700);margin-bottom:18px;padding:10px 14px;font-size:.85rem}.formula-box{background:var(--ink-50);border:1px solid var(--ink-100);border-left:4px solid var(--blue-600);border-radius:var(--radius-sm);margin:18px 0;padding:18px 20px}.formula-box code{color:var(--ink-900);margin-bottom:8px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:1rem;font-weight:700;display:block}.formula-box p{color:var(--ink-500);margin:0;font-size:.92rem}.disclaimer-box{border-radius:var(--radius-sm);color:#78350f;background:#fffbeb;border:1px solid #fde68a;margin:22px 0;padding:16px 18px;font-size:.9rem}.disclaimer-box strong{color:#92400e}.calc-copy{max-width:820px}.calc-copy p{color:var(--ink-700)}.calc-copy h2{margin-top:36px;font-size:1.4rem}.prose{max-width:760px;margin:0 auto}.prose h1{font-size:clamp(1.8rem,3.6vw,2.4rem)}.prose h2{margin-top:40px;font-size:1.45rem}.prose h3{margin-top:28px;font-size:1.15rem}.prose p,.prose li{color:var(--ink-700)}.prose table{border-collapse:collapse;width:100%;margin:20px 0;font-size:.92rem}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--ink-100);padding:10px 12px}.prose th{background:var(--ink-50);text-transform:uppercase;letter-spacing:.04em;font-size:.8rem}.prose blockquote{border-left:4px solid var(--blue-600);background:var(--blue-50);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:20px 0;padding:8px 20px}.prose code{background:var(--ink-50);border:1px solid var(--ink-100);border-radius:5px;padding:1px 6px;font-size:.88em}.prose img{border-radius:var(--radius);max-width:100%}.page-hero{background:var(--ink-50);border-bottom:1px solid var(--ink-100);text-align:center;padding:48px 0}.page-hero h1{margin-bottom:8px;font-size:clamp(1.8rem,3.6vw,2.4rem)}.page-hero p{color:var(--ink-500);max-width:640px;margin:0 auto}.blog-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.blog-card{border:1px solid var(--ink-100);border-radius:var(--radius);color:var(--ink-900);background:#fff;flex-direction:column;transition:all .15s;display:flex;overflow:hidden;text-decoration:none!important}.blog-card:hover{border-color:var(--blue-500);box-shadow:var(--shadow-md);transform:translateY(-2px)}.blog-card-img{aspect-ratio:16/9;background:linear-gradient(135deg,var(--blue-100),var(--blue-50));color:var(--blue-600);place-items:center;display:grid}.blog-card-img img{object-fit:cover;width:100%;height:100%}.blog-card-body{flex-direction:column;flex:1;gap:8px;padding:20px;display:flex}.blog-card-body .cat{text-transform:uppercase;letter-spacing:.06em;color:var(--blue-600);font-size:.75rem;font-weight:700}.blog-card-body strong{font-size:1.02rem;line-height:1.35}.blog-card-body p{color:var(--ink-500);flex:1;margin:0;font-size:.88rem}.blog-card-body .link-more{color:var(--blue-600);font-size:.85rem;font-weight:700}.results-meta{text-align:center;color:var(--ink-500);margin-bottom:24px;font-size:.9rem}.pagination{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:36px;display:flex}.pagination a,.pagination span{border-radius:var(--radius-sm);border:1px solid var(--ink-100);min-width:40px;height:40px;color:var(--ink-700);background:#fff;justify-content:center;align-items:center;padding:0 12px;font-size:.9rem;font-weight:600;display:inline-flex;text-decoration:none!important}.pagination a:hover{border-color:var(--blue-500);color:var(--blue-600)}.pagination .is-current{background:var(--blue-600);border-color:var(--blue-600);color:#fff}.pagination .is-disabled{opacity:.45;pointer-events:none}.post-hero{background:var(--ink-50);border-bottom:1px solid var(--ink-100);padding:44px 0}.post-hero .post-meta{color:var(--ink-500);flex-wrap:wrap;justify-content:center;gap:14px;font-size:.88rem;display:flex}.post-hero h1{text-align:center;max-width:820px;margin:10px auto;font-size:clamp(1.8rem,3.6vw,2.5rem)}.post-hero p{text-align:center;color:var(--ink-500);max-width:720px;margin:0 auto}.post-hero-img{aspect-ratio:1200/630;object-fit:cover;border-radius:var(--radius);width:100%;max-width:820px;height:auto;box-shadow:var(--shadow-md);margin:26px auto 0}.contact-form{border:1px solid var(--ink-100);border-radius:var(--radius);max-width:560px;box-shadow:var(--shadow-sm);background:#fff;flex-direction:column;gap:18px;margin:0 auto;padding:30px;display:flex}.contact-form textarea{font:inherit;border:1px solid var(--ink-300);border-radius:var(--radius-sm);resize:vertical;min-height:140px;padding:11px 13px;font-size:.95rem}.contact-form textarea:focus{outline:2px solid var(--blue-500);outline-offset:-1px;border-color:var(--blue-500)}.form-status{min-height:1.4em;margin:0;font-size:.9rem;font-weight:600}.form-status.is-error{color:#dc2626}.form-status.is-success{color:var(--green-600)}.sitemap-cols{grid-template-columns:repeat(3,1fr);gap:32px;display:grid}.sitemap-cols h2{border-bottom:2px solid var(--blue-100);padding-bottom:8px;font-size:1.1rem}.sitemap-cols ul{flex-direction:column;gap:7px;margin:0;padding:0;font-size:.92rem;list-style:none;display:flex}.region-switcher{border-top:1px solid var(--ink-700);flex-wrap:wrap;gap:8px;margin-bottom:8px;padding:20px 0;display:flex}.region-switcher a{border:1px solid var(--ink-700);border-radius:999px;align-items:center;padding:5px 11px;font-size:.8rem;font-weight:600;display:inline-flex;color:var(--ink-300)!important;text-decoration:none!important}.region-switcher a:hover{border-color:var(--blue-500);color:#fff!important}.footer-social{gap:10px;margin-top:14px;display:flex}.footer-social a{background:var(--ink-700);width:34px;height:34px;color:var(--ink-300);border-radius:8px;place-items:center;display:grid}.footer-social a:hover{background:var(--blue-600);color:#fff}.calc-hero-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.lang-switcher{position:relative}.lang-toggle{border:1px solid var(--blue-100);color:var(--ink-700);cursor:pointer;background:#fff;border-radius:999px;align-items:center;gap:7px;padding:7px 13px;font-size:.85rem;font-weight:600;display:inline-flex}.lang-toggle:hover{border-color:var(--blue-500)}.lang-menu{z-index:40;border:1px solid var(--blue-100);top:calc(100% + 6px);background:#fff;border-radius:12px;min-width:168px;margin:0;padding:6px;list-style:none;position:absolute;inset-inline-end:0;box-shadow:0 12px 32px #0f172a24}.lang-menu a{color:var(--ink-700);border-radius:8px;padding:8px 12px;font-size:.9rem;text-decoration:none;display:block}.lang-menu a:hover{background:var(--blue-100)}.lang-menu a[aria-current=true]{color:var(--blue-600);font-weight:700}[dir=rtl] .breadcrumbs span{transform:scaleX(-1)}[dir=rtl] .lang-menu{inset-inline:0 auto}@media(max-width:1024px){.calc-page-layout{grid-template-columns:1fr}.calc-page-results{position:static}.blog-grid,.sitemap-cols{grid-template-columns:1fr 1fr}}@media(max-width:640px){.blog-grid,.sitemap-cols{grid-template-columns:1fr}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}