:root{--ink:#13201a;--muted:#66736c;--paper:#f6f8f6;--card:#fff;--green:#0b6b3d;--green2:#149255;--dark:#0d1b14;--line:#dfe7e2;--warm:#f3eee4}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.55}a{color:inherit}.wrap{width:min(1160px,calc(100% - 36px));margin:auto}.hero{min-height:720px;background:radial-gradient(circle at 86% 16%,rgba(36,161,94,.28),transparent 30%),linear-gradient(135deg,#0b1710 0%,#102c1d 58%,#173c28 100%);color:#fff;padding:28px 0 72px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;inset:auto -10% -240px 35%;height:460px;border-radius:50%;background:rgba(255,255,255,.035);transform:rotate(-8deg)}nav{display:flex;justify-content:space-between;align-items:center;gap:24px;position:relative;z-index:1}.brand{font-size:18px;font-weight:850;letter-spacing:.08em}.navlink{text-decoration:none;border:1px solid rgba(255,255,255,.24);padding:10px 15px;border-radius:999px;color:#e8f3ec}.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:48px;align-items:center;padding-top:92px;position:relative;z-index:1}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:8px 12px;border-radius:999px;font-size:14px;color:#dbece1}h1{font-size:clamp(42px,6.1vw,76px);line-height:.98;letter-spacing:-.055em;margin:22px 0 24px;max-width:850px}.lead{font-size:clamp(18px,2.1vw,24px);color:#d6e4db;max-width:760px;margin:0 0 32px}.actions{display:flex;flex-wrap:wrap;gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 22px;border-radius:13px;text-decoration:none;font-weight:800;transition:.2s ease}.btn-primary{background:linear-gradient(135deg,var(--green2),var(--green));box-shadow:0 12px 30px rgba(0,0,0,.25)}.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}.btn-ghost{border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.06)}.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:28px;padding:25px;backdrop-filter:blur(10px);box-shadow:0 26px 70px rgba(0,0,0,.22)}.hero-card h3{margin:0 0 18px;font-size:20px}.mini-stat{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-top:1px solid rgba(255,255,255,.12)}.mini-stat:first-of-type{border-top:0}.mini-stat b{font-size:24px}.mini-stat span{color:#cfe0d5;text-align:right}section{padding:84px 0}.section-head{display:flex;justify-content:space-between;gap:36px;align-items:end;margin-bottom:34px}h2{font-size:clamp(32px,4.3vw,54px);line-height:1.05;letter-spacing:-.045em;margin:0}.sub{max-width:710px;color:var(--muted);font-size:18px;margin:0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:25px;box-shadow:0 12px 35px rgba(17,38,26,.055)}.metric strong{display:block;text-align:left;font-size:36px;line-height:1;margin-bottom:10px;color:var(--green)}.metric span{color:var(--muted)}.domains-section{background:var(--dark);color:#fff}.domains-section .sub{color:#c8d8ce}.domain-list{display:flex;flex-direction:column;gap:13px;max-width:820px;margin:38px auto 0}.domain-link{display:flex;align-items:center;justify-content:center;text-align:left;text-decoration:none;font-size:clamp(20px,2.5vw,28px);font-weight:820;letter-spacing:.01em;padding:18px 22px;border-radius:16px;background:linear-gradient(135deg,#168f52,#0b673b);box-shadow:0 10px 24px rgba(0,0,0,.22);transition:.2s ease}.domain-link:hover{transform:translateY(-2px) scale(1.008);filter:brightness(1.07);box-shadow:0 16px 30px rgba(0,0,0,.28)}.story-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px;align-items:center}.story-card{background:#fff;border:1px solid var(--line);border-radius:26px;padding:32px}.story-card p{color:var(--muted);font-size:18px}.checks{display:grid;gap:12px;margin-top:24px}.check{display:flex;gap:12px;align-items:flex-start}.check i{font-style:normal;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:#dff3e7;color:var(--green);font-weight:900;flex:none}.image-card{background:#fff;border-radius:26px;padding:10px;border:1px solid var(--line);box-shadow:0 18px 55px rgba(17,38,26,.11)}.image-card img{width:100%;display:block;border-radius:18px}.caption{padding:12px 8px 6px;color:var(--muted);font-size:14px}.proof-grid{display:grid;grid-template-columns:1fr;gap:22px}.proof-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:0 12px 36px rgba(17,38,26,.07)}.proof-card img{width:100%;display:block;border-radius:16px}.proof-card h3{margin:17px 13px 5px}.proof-card p{margin:0 13px 15px;color:var(--muted)}.benefits{background:var(--warm)}.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.benefit{background:#fff;border-radius:22px;padding:26px;border:1px solid #e7e1d6}.benefit b{display:block;font-size:21px;margin-bottom:9px}.benefit p{color:var(--muted);margin:0}.contact-wrap{background:linear-gradient(135deg,#0c1a12,#173d28);border-radius:30px;color:#fff;padding:42px;display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center}.contact-wrap p{color:#d0dfd5;font-size:18px}.contact-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:26px}.contact-card a{text-decoration:none;border-bottom:1px dashed rgba(255,255,255,.45)}footer{padding:28px 0 44px;color:#718078;font-size:14px}@media(max-width:900px){.hero-grid,.story-grid,.contact-wrap{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.proof-grid,.benefit-grid{grid-template-columns:1fr}.section-head{align-items:start;flex-direction:column}.hero{min-height:auto}}@media(max-width:560px){.wrap{width:min(100% - 24px,1160px)}nav{align-items:flex-start;flex-direction:column}.hero-grid{padding-top:58px}section{padding:62px 0}.stats-grid{grid-template-columns:1fr}.contact-wrap{padding:27px}.domain-link{font-size:19px;padding:16px 12px}}

/* Domain list: plain text links with a light green glow */
.domain-list{gap:10px;max-width:860px}
.domain-link{
  display:block;
  padding:10px 8px;
  border-radius:0;
  background:none;
  box-shadow:none;
  color:#78efaa;
  font-size:clamp(23px,2.8vw,32px);
  font-weight:780;
  letter-spacing:.045em;
  text-shadow:0 0 8px rgba(94,239,155,.60),0 0 22px rgba(60,210,125,.34);
  transition:color .2s ease,text-shadow .2s ease,transform .2s ease;
}
.domain-link:hover{
  transform:translateX(4px);
  filter:none;
  color:#a0ffc5;
  text-shadow:0 0 10px rgba(126,255,179,.88),0 0 28px rgba(65,225,137,.54);
}

/* Click-to-expand affordance for every image */
.zoom-media{position:relative;overflow:hidden;border-radius:inherit;cursor:zoom-in;outline:none}
.zoom-media:focus-visible{box-shadow:0 0 0 4px rgba(20,146,85,.32)}
.zoom-media img{display:block;width:100%}
.zoom-icon{
  position:absolute;top:12px;right:12px;z-index:3;
  width:38px;height:38px;display:grid;place-items:center;
  border-radius:10px;color:#fff;font-size:22px;line-height:1;
  background:rgba(10,29,18,.76);border:1px solid rgba(255,255,255,.38);
  box-shadow:0 6px 20px rgba(0,0,0,.24);backdrop-filter:blur(8px);
  transition:transform .2s ease,background .2s ease;
}
.zoom-media:hover .zoom-icon{transform:scale(1.07);background:rgba(11,107,61,.92)}

.image-lightbox{
  position:fixed;inset:0;z-index:9999;display:none;align-items:center;justify-content:center;
  padding:26px;background:rgba(4,10,7,.94);backdrop-filter:blur(8px);
}
.image-lightbox.is-open{display:flex}
.lightbox-image{max-width:calc(100vw - 52px);max-height:calc(100vh - 52px);width:auto;height:auto;object-fit:contain;border-radius:10px;box-shadow:0 24px 90px rgba(0,0,0,.55)}
.lightbox-close{
  position:fixed;top:18px;right:22px;z-index:10000;width:46px;height:46px;
  border:1px solid rgba(255,255,255,.35);border-radius:50%;background:rgba(15,35,23,.88);
  color:#fff;font-size:32px;line-height:1;cursor:pointer;
}
.lightbox-close:hover{background:#0b6b3d}
body.lightbox-open{overflow:hidden}
@media(max-width:560px){.zoom-icon{top:8px;right:8px;width:34px;height:34px}.image-lightbox{padding:12px}.lightbox-image{max-width:calc(100vw - 24px);max-height:calc(100vh - 24px)}}

/* Shared navigation and internal pages */
.brand{text-decoration:none;color:inherit}
.site-nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}
.inner-page{min-height:100vh;background:var(--paper)}
.inner-header{background:linear-gradient(135deg,#0b1710 0%,#102c1d 58%,#173c28 100%);color:#fff;padding:28px 0}
.inner-main{padding:72px 0}
.inner-intro{max-width:760px;margin-bottom:34px}
.inner-intro h1{color:var(--ink);font-size:clamp(38px,5vw,64px);margin:0 0 20px}
.inner-intro p{color:var(--muted);font-size:18px;margin:0}
.inner-intro .inner-intro__guide{margin-top:18px}
.content-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 12px 35px rgba(17,38,26,.055)}
.content-card h2{font-size:clamp(26px,3vw,38px);margin-bottom:14px}
.content-card p{color:var(--muted);margin:0}
@media(max-width:700px){.inner-header nav{align-items:flex-start;flex-direction:column}.site-nav{justify-content:flex-start}.inner-main{padding:52px 0}}
@media(max-width:560px){.site-nav{width:100%;flex-direction:column}.site-nav .navlink{text-align:center}}

/* Three-step steel calculator */
.steel-calculator{padding:0;border:1px solid #aeb8b2;background:#ddd;box-shadow:0 14px 38px rgba(17,38,26,.09);overflow:hidden}
.steel-calculator__title,.steel-calculator__footer{margin:0;background:#212529;color:#fff;padding:10px 16px;font-size:16px;font-weight:700;letter-spacing:0}
.steel-calculator__body{display:grid;grid-template-columns:minmax(240px,300px) 1fr;min-height:430px;gap:1px;background:#c8cfcb}
.calculator-workspace{display:grid;grid-template-rows:minmax(260px,auto) minmax(168px,auto);gap:1px;background:#c8cfcb}
.calculator-step{padding:0;background:#fff;min-width:0}
.calculator-step h3{margin:0;min-height:48px;padding:13px 16px;background:#e8ebe9;color:#465149;font-size:15px;font-weight:650}
.calculator-step h3 span{color:var(--green);font-weight:850}
.assortment-list{display:flex;flex-direction:column;padding:8px 0}
.assortment-select-wrap{display:none}
.assortment-item{width:100%;border:0;border-left:4px solid transparent;background:#fff;color:#87918b;padding:11px 16px 11px 14px;text-align:left;font:inherit;cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease}
.assortment-item:hover,.assortment-item:focus-visible{background:#edf5f0;color:var(--ink);outline:0}
.assortment-item.is-active{border-left-color:var(--green);background:#f1f7f3;color:#212529;font-weight:750}
.parameters-form{display:flex;flex-direction:column;min-height:212px}
.parameters-list{display:grid;grid-template-columns:repeat(2,minmax(170px,1fr));gap:12px;padding:18px;flex:1;align-content:start}
.parameter-field{display:flex;align-items:center;justify-content:space-between;gap:14px;color:#344139;font-size:15px}
.parameter-field input{width:108px;min-height:40px;border:1px solid #b9c5bd;border-radius:7px;background:#fff;padding:7px 9px;color:var(--ink);font:inherit;text-align:right}
.parameter-field input:focus{outline:3px solid rgba(20,146,85,.18);border-color:var(--green2)}
.calculator-submit{align-self:center;min-width:190px;min-height:42px;margin:0 18px 16px;border:0;border-radius:8px;background:var(--green);color:#fff;font:inherit;font-weight:800;cursor:pointer;transition:background .16s ease,transform .16s ease}
.calculator-submit:hover:not(:disabled){background:var(--green2);transform:translateY(-1px)}
.calculator-submit:disabled{cursor:wait;opacity:.55}
.results-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);min-height:118px}
.result-item{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;align-content:center;column-gap:10px;padding:18px;background:#fff}
.result-item span{grid-column:1/-1;color:var(--muted);font-size:14px}
.result-item strong{color:var(--green);font-size:clamp(25px,3vw,34px);line-height:1.2;font-variant-numeric:tabular-nums}
.result-item small{align-self:end;padding-bottom:5px;color:var(--muted);font-weight:700}
.calculator-message{margin:10px 16px;color:#a12626;font-weight:650}
.calculator-status,.calculator-hint{margin:12px 16px;color:var(--muted)}
.steel-calculator__footer{min-height:38px;font-size:13px;font-weight:500;color:#d8dfda}
@media(max-width:800px){.steel-calculator__body{grid-template-columns:1fr}.assortment-list{display:grid;grid-template-columns:repeat(2,1fr)}.calculator-workspace{grid-template-rows:auto auto}.calculator-assortments{border-bottom:1px solid #c8cfcb}}
@media(max-width:700px){.calculator-assortments .assortment-list{display:none}.assortment-select-wrap{display:block;padding:18px}.assortment-select-wrap label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.assortment-select{display:block;width:100%;min-height:46px;border:1px solid #b9c5bd;border-radius:8px;background:#fff;padding:8px 40px 8px 11px;color:var(--ink);font:inherit}.assortment-select:focus{outline:3px solid rgba(20,146,85,.18);border-color:var(--green2)}}
@media(max-width:560px){.parameters-list,.results-grid{grid-template-columns:1fr}.steel-calculator__body{min-height:0}.parameter-field input{width:100px}.result-item{min-height:110px}.inner-intro h1{font-size:38px}}

/* Mobile navigation */
.menu-toggle{display:none;width:46px;height:42px;padding:9px 10px;border:1px solid rgba(255,255,255,.28);border-radius:10px;background:rgba(255,255,255,.07);color:#fff;cursor:pointer}
.menu-toggle span{display:block;width:100%;height:2px;margin:5px 0;border-radius:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.menu-toggle:focus-visible{outline:3px solid rgba(120,239,170,.55);outline-offset:3px}
@media(max-width:700px){
  .hero nav,.inner-header nav{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:16px}
  .menu-toggle{display:block;flex:none}
  .site-nav{position:absolute;z-index:20;top:calc(100% + 12px);left:0;right:0;display:none;width:100%;padding:10px;border:1px solid rgba(255,255,255,.18);border-radius:14px;background:#102c1d;box-shadow:0 18px 40px rgba(0,0,0,.34)}
  .site-nav.is-open{display:flex;flex-direction:column;align-items:stretch}
  .site-nav .navlink{display:block;width:100%;padding:12px 14px;text-align:left}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* Catalogue generated from structure.json */
.catalog-page .inner-header{position:sticky;top:0;z-index:100}
.catalog-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:24px;align-items:start}
.catalog-content{min-width:0}
.catalog-jump{display:block;position:sticky;top:calc(var(--catalog-header-height,100px) + 16px);z-index:90;max-height:calc(100vh - var(--catalog-header-height,100px) - 32px);padding:10px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.97);box-shadow:0 10px 28px rgba(17,38,26,.09);backdrop-filter:blur(10px)}
.catalog-jump[hidden]{display:none}
.catalog-jump__list{display:flex;max-height:calc(100vh - var(--catalog-header-height,100px) - 54px);flex-direction:column;gap:3px;overflow-y:auto;scrollbar-width:thin}
.catalog-jump__link{display:block;padding:5px 8px;border:1px solid transparent;border-radius:7px;color:var(--muted);font-size:12px;font-weight:750;line-height:1.2;text-decoration:none;transition:background .16s ease,color .16s ease,border-color .16s ease}
.catalog-jump__link:hover,.catalog-jump__link:focus-visible{border-color:#8fbba3;color:var(--green);outline:0}
.catalog-jump__link.is-active{border-color:var(--green);background:var(--green);color:#fff}
.catalog-status{padding:26px;border:1px solid var(--line);border-radius:18px;background:#fff;color:var(--muted);text-align:center}
.catalog-status.is-error{border-color:#e0b5b5;background:#fff7f7;color:#9b2727}
.catalog-groups{display:grid;gap:24px}
.catalog-group{padding:0;overflow:hidden;scroll-margin-top:calc(var(--catalog-header-height,100px) + 16px);border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 12px 35px rgba(17,38,26,.055)}
.catalog-group h2{padding:22px 24px;font-size:clamp(25px,3vw,34px);border-bottom:1px solid var(--line)}
.catalog-group__toggle{width:100%;padding:0;border:0;background:transparent;color:inherit;font:inherit;font-weight:inherit;text-align:left;cursor:default}
.catalog-columns,.catalog-item{display:grid;grid-template-columns:minmax(180px,1.2fr) minmax(150px,.7fr) minmax(180px,1fr);gap:20px;align-items:center;padding:12px 24px}
.catalog-columns{background:#edf2ef;color:var(--muted);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.045em}
.catalog-item{min-height:62px;border-top:1px solid var(--line)}
.catalog-item:first-child{border-top:0}
.catalog-item__name{font-size:17px}
.catalog-item__weight{color:var(--green);font-weight:800;font-variant-numeric:tabular-nums}
.catalog-links{display:flex;flex-wrap:wrap;gap:8px}
.catalog-links a{color:var(--green);font-weight:700;text-underline-offset:3px}
.catalog-links-empty{color:#a7b0aa}
.catalog-empty{margin:0;padding:24px;color:var(--muted)}
@media(max-width:900px) and (min-width:701px){.catalog-layout{grid-template-columns:190px minmax(0,1fr);gap:18px}.catalog-columns,.catalog-item{grid-template-columns:minmax(110px,1.2fr) minmax(100px,.7fr) minmax(120px,1fr);gap:12px;padding-left:16px;padding-right:16px}}
@media(max-width:700px){.catalog-page .inner-header{position:relative}.catalog-layout{display:block}.catalog-jump{display:none}.catalog-columns{display:none}.catalog-group{overflow:visible;scroll-margin-top:12px}.catalog-group h2{padding:0;border-bottom:0;font-size:25px}.catalog-group__toggle{position:relative;padding:18px 52px 18px 18px;cursor:pointer}.catalog-group__toggle::after{position:absolute;right:20px;content:"+"}.catalog-group__toggle[aria-expanded="true"]::after{content:"−"}.catalog-group__toggle.is-loading::after{content:"…"}.catalog-group.is-open h2{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);border-radius:21px 21px 0 0;background:#fff;box-shadow:0 8px 18px rgba(17,38,26,.1)}.catalog-item{grid-template-columns:1fr auto;gap:7px 16px;padding:16px 18px}.catalog-item__weight{text-align:right}.catalog-links{grid-column:1/-1}.catalog-links-empty{display:none}}