.grade-310s-hub,.grade-form-310s,.furnace-project{--authority-rule:var(--steel-300)}.furnace-project-media{border:1px solid var(--authority-rule);background:var(--steel-100);margin:0;overflow:hidden}.furnace-project-media img{aspect-ratio:2.2;object-fit:cover;width:100%;display:block}.furnace-project-fact{align-content:start;display:grid}.furnace-project-fact p{color:var(--steel-700);margin:.8rem 0 0;font-size:.9rem;line-height:1.55}.furnace-project-columns{border-block:1px solid var(--authority-rule);grid-template-columns:repeat(2,minmax(0,1fr));margin-top:1.5rem;display:grid}.furnace-project-columns>div{min-width:0;padding:1.35rem 1.5rem 1.35rem 0}.furnace-project-columns>div+div{border-left:1px solid var(--authority-rule);padding-left:1.5rem}.furnace-project-columns h3{margin-top:0}.fabrication-source-scope span{display:none}.furnace-project-quote{margin-bottom:clamp(3rem,7vw,6rem)}.furnace-project-quote .authority-actions{margin-top:1.5rem}.authority-opening{grid-template-columns:minmax(0,1.05fr) minmax(18rem,.95fr);align-items:center;gap:clamp(1.75rem,5vw,4rem);padding-bottom:clamp(2.5rem,6vw,5rem);display:grid}.authority-opening h2{border-top:0;margin-top:0;padding-top:0}.authority-opening__copy p{max-width:64ch;color:var(--steel-700);font-size:1.1rem;line-height:1.7}.authority-opening__media{border:1px solid var(--authority-rule);background:var(--steel-100);margin:0;overflow:hidden}.authority-opening__media img{aspect-ratio:3/2;object-fit:cover;width:100%}.authority-actions{flex-wrap:wrap;gap:.75rem;display:flex}.authority-section{margin-top:clamp(3rem,7vw,6rem)}.authority-facts{border-block:1px solid var(--authority-rule);grid-template-columns:repeat(3,minmax(0,1fr));margin:1.5rem 0 0;display:grid}.authority-facts div{border-bottom:1px solid var(--authority-rule);min-width:0;padding:1.1rem 1.25rem 1.2rem 0}.authority-facts div:nth-child(3n+2),.authority-facts div:nth-child(3n+3){border-left:1px solid var(--authority-rule);padding-left:1.25rem}.authority-facts div:nth-last-child(-n+3){border-bottom:0}.authority-facts dt{color:var(--steel-700);letter-spacing:.08em;text-transform:uppercase;margin-bottom:.3rem;font-size:.82rem;font-weight:700}.authority-facts dd{color:var(--navy);margin:0;font-size:clamp(1.1rem,2vw,1.35rem);font-weight:700}.authority-facts.furnace-project-facts{grid-template-columns:repeat(2,minmax(0,1fr))}.authority-facts .furnace-project-fact:nth-child(3n+2),.authority-facts .furnace-project-fact:nth-child(3n+3){border-left:0;padding-left:0}.authority-facts .furnace-project-fact:nth-child(2n){border-left:1px solid var(--authority-rule);padding-left:1.25rem}.authority-facts .furnace-project-fact:nth-last-child(-n+3){border-bottom:1px solid var(--authority-rule)}.authority-facts .furnace-project-fact:nth-last-child(-n+2){border-bottom:0}.technical-scope{border-left:4px solid var(--brand);background:var(--steel-100);margin-top:1.5rem;padding:1rem 1.2rem}.technical-scope>p{max-width:none;margin-bottom:.8rem}.technical-scope dl{grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem 1.5rem;margin:0;display:grid}.technical-scope dl div{min-width:0}.technical-scope dt{color:var(--steel-700);letter-spacing:.07em;text-transform:uppercase;font-size:.82rem;font-weight:700}.technical-scope dd{margin:.15rem 0 0;line-height:1.5}.authority-designation-table{overscroll-behavior-inline:contain;border-block:1px solid var(--steel-300);-webkit-overflow-scrolling:touch;max-width:100%;margin-block:1.5rem 2rem;overflow-x:auto}.authority-designation-table:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px}.authority-designation-table table{white-space:normal;width:100%;min-width:46rem;margin:0;display:table}.authority-designation-table caption{background:var(--navy);color:var(--paper);text-align:left;padding:.9rem 1rem;font-size:1rem;font-weight:700}.authority-designation-table th,.authority-designation-table td{overflow-wrap:anywhere;line-height:1.55}.service-guidance{border-block:1px solid var(--authority-rule);padding-block:clamp(2rem,5vw,3.5rem)}.service-guidance h2{border-top:0;margin-top:0;padding-top:0}.service-scope{border-block:1px solid var(--authority-rule);border-left:4px solid var(--brand);background:var(--steel-100);margin-top:1.5rem;padding:1.15rem 1.25rem}.service-scope p{max-width:none;margin-bottom:.55rem}.service-scope p:last-child{margin-bottom:0}.service-scope__value{color:var(--navy);flex-wrap:wrap;align-items:baseline;gap:.5rem 1rem;display:flex}.service-scope__value strong{font-size:clamp(1.6rem,4vw,2.5rem);line-height:1}.service-scope__value span{color:var(--steel-700);font-weight:700}.authority-link-rail{border-top:1px solid var(--authority-rule);grid-template-columns:repeat(2,minmax(0,1fr));margin-block:1.5rem 3rem;display:grid}.authority-link-rail a{border-bottom:1px solid var(--authority-rule);min-width:0;color:var(--steel-900);gap:.3rem;padding:1.2rem 1.2rem 1.25rem 0;text-decoration:none;display:grid}.authority-link-rail a:nth-child(2n){border-left:1px solid var(--authority-rule);padding-left:1.2rem}.authority-link-rail a:hover strong{color:var(--brand-dark)}.authority-link-rail strong{font-size:1.12rem}.authority-link-rail span{color:var(--steel-700);font-weight:400}.authority-columns{border-block:1px solid var(--authority-rule);grid-template-columns:repeat(3,minmax(0,1fr));margin-top:1.5rem;display:grid}.authority-columns>div{min-width:0;padding:1.4rem 1.4rem 0 0}.authority-columns>div+div{border-left:1px solid var(--authority-rule);padding-left:1.4rem}.authority-columns h3{margin-top:0;font-size:1.25rem}.authority-review{border-top:1px solid var(--authority-rule);padding-top:1.5rem}.authority-close{border-block:1px solid var(--authority-rule);margin-top:clamp(3rem,7vw,6rem);padding-block:clamp(2rem,5vw,3.5rem)}.authority-close h2{border-top:0;margin-top:0;padding-top:0}.grade-form-opening{align-items:start}.grade-form-opening .authority-opening__media{margin-top:.25rem}.grade-form-ranges{border-top:1px solid var(--authority-rule);margin-top:1.5rem}.grade-form-range{border-bottom:1px solid var(--authority-rule);grid-template-columns:minmax(15rem,.72fr) minmax(0,1.28fr);gap:clamp(1.25rem,4vw,3.25rem);padding-block:clamp(1.35rem,3vw,2.1rem);display:grid}.grade-form-range__heading h3{margin:0 0 .6rem;font-size:clamp(1.2rem,2vw,1.55rem)}.grade-form-range__heading p{color:var(--navy);margin:0;font-size:clamp(1.1rem,2vw,1.35rem);font-weight:700;line-height:1.5}.grade-form-range--special .grade-form-range__heading{border-left:4px solid var(--brand);padding-left:1rem}.grade-form-range dl{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem 1.5rem;margin:0;display:grid}.grade-form-range dl div{min-width:0}.grade-form-range dt{color:var(--steel-700);letter-spacing:.07em;text-transform:uppercase;font-size:.8rem;font-weight:700}.grade-form-range dd{margin:.2rem 0 0;line-height:1.55}.grade-form-range__basis{border-top:1px solid var(--authority-rule);grid-column:2;padding-top:.9rem}.grade-form-range__basis h4{color:var(--steel-700);letter-spacing:.07em;text-transform:uppercase;margin:0 0 .55rem;font-size:.8rem}.grade-form-range__basis ul{flex-wrap:wrap;gap:.4rem 1.25rem;margin:0;padding:0;list-style:none;display:flex}.grade-form-range__basis li{color:var(--steel-700);flex-wrap:wrap;align-items:baseline;gap:.3rem;font-size:.88rem;display:flex}.grade-form-range__basis li span:last-child:before{content:"— "}.grade-form-supply-note{border-left:4px solid var(--brand);max-width:78ch;color:var(--steel-700);margin-top:1.25rem;padding:.85rem 0 .85rem 1rem}.grade-form-text-section{border-top:1px solid var(--authority-rule);grid-template-columns:minmax(14rem,.6fr) minmax(0,1.4fr);align-items:start;gap:clamp(1.5rem,5vw,4rem);padding-top:clamp(1.4rem,3vw,2.25rem);display:grid}.grade-form-text-section h2{border:0;margin:0;padding:0}.grade-form-text-section p{max-width:none;color:var(--steel-700);margin:0;font-size:1.05rem;line-height:1.7}@media (width<=760px){.authority-opening,.authority-columns{grid-template-columns:1fr}.authority-opening__media{order:-1}.authority-facts{grid-template-columns:repeat(2,minmax(0,1fr))}.authority-facts div:nth-child(3n+2),.authority-facts div:nth-child(3n+3){border-left:0;padding-left:0}.authority-facts div:nth-child(2n){border-left:1px solid var(--authority-rule);padding-left:1rem}.authority-facts div:nth-last-child(-n+3){border-bottom:1px solid var(--authority-rule)}.authority-facts div:nth-last-child(-n+2){border-bottom:0}.technical-scope dl,.authority-link-rail{grid-template-columns:1fr}.authority-link-rail a:nth-child(2n){border-left:0;padding-left:0}.authority-columns>div{padding:1.25rem 0 0}.authority-columns>div+div{border-left:0;border-top:1px solid var(--authority-rule);padding-left:0}.grade-form-range,.grade-form-text-section,.furnace-project-columns{grid-template-columns:1fr}.grade-form-range{gap:1.25rem}.grade-form-range dl{grid-template-columns:1fr}.grade-form-range__basis{grid-column:1}.authority-facts .furnace-project-fact:nth-child(2n){padding-left:1rem}.furnace-project-columns>div{padding:1.2rem 0}.furnace-project-columns>div+div{border-top:1px solid var(--authority-rule);border-left:0;padding-left:0}}