/* =========================================================
   Umiya Steel Fabricators — main stylesheet
   Brand colours taken from the company logo.
   ========================================================= */
:root{
  --navy:#2f4677;          /* logo blue */
  --navy-dk:#16213d;
  --navy-xdk:#0e1629;
  --red:#c8202f;           /* logo red */
  --red-dk:#a51823;
  --steel:#eef1f6;
  --steel-2:#dfe4ec;
  --line:#d4dae4;
  --ink:#18202f;
  --ink-2:#4a5568;
  --white:#fff;
  --radius:6px;
  --shadow:0 10px 30px -12px rgba(16,26,52,.28);
  --head:"Barlow Condensed","Arial Narrow",sans-serif;
  --body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}

body{margin:0;font-family:var(--body);font-size:17px;line-height:1.65;color:var(--ink);background:var(--white);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--red)}
h1,h2,h3,h4{font-family:var(--head);font-weight:700;line-height:1.08;margin:0 0 .5em;color:var(--navy-dk);letter-spacing:.01em}
h1{font-size:clamp(2.4rem,5.6vw,4.4rem);text-transform:uppercase}
h2{font-size:clamp(2rem,3.6vw,2.9rem);text-transform:uppercase}
h3{font-size:1.5rem}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section.tight{padding:64px 0}
.bg-steel{background:var(--steel)}
.bg-navy{background:var(--navy-dk);color:#c9d3e6}
.bg-navy h2,.bg-navy h3{color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-weight:600;font-size:1rem;letter-spacing:.18em;text-transform:uppercase;color:var(--red);margin-bottom:12px}
.eyebrow::before{content:"";width:28px;height:3px;background:var(--red)}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:62ch}
.bg-navy .lead{color:#b7c3da}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.sec-head{margin-bottom:48px}
.sec-head.row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--head);font-weight:600;font-size:1.08rem;letter-spacing:.08em;text-transform:uppercase;padding:14px 26px;border-radius:var(--radius);border:2px solid transparent;cursor:pointer;transition:.2s;line-height:1}
.btn svg{width:18px;height:18px}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-dk);color:#fff;transform:translateY(-2px)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-ghost:hover{background:#fff;color:var(--navy-dk)}
.btn-line{border-color:var(--navy);color:var(--navy)}
.btn-line:hover{background:var(--navy);color:#fff}

/* top bar */
.topbar{background:var(--navy-xdk);color:#a9b6cf;font-size:.9rem}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar a{color:#dbe3f2}
.topbar a:hover{color:#fff}
.topbar span{display:inline-flex;align-items:center;gap:6px;margin-right:22px}
.topbar svg{width:14px;height:14px;opacity:.8}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:0 6px 24px -14px rgba(16,26,52,.45)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:84px;transition:height .25s}
.site-header.scrolled .wrap{height:68px}
.brand{flex:none}
.brand img{height:54px;width:auto;transition:height .25s}
.site-header.scrolled .brand img{height:44px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{font-family:var(--head);font-weight:600;font-size:1.08rem;letter-spacing:.05em;text-transform:uppercase;color:var(--navy-dk);padding:10px 11px;position:relative;white-space:nowrap}
.nav a::after{content:"";position:absolute;left:11px;right:11px;bottom:4px;height:3px;background:var(--red);transform:scaleX(0);transition:transform .2s;transform-origin:left}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav a.active{color:var(--red)}
.nav .btn{margin-left:12px;padding:12px 20px}
.nav .btn-red,.nav .btn-red:hover{color:#fff}
.nav .btn::after{display:none}
.nav-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:26px;height:3px;background:var(--navy-dk);margin:5px 0;transition:.25s}

/* hero */
.hero{position:relative;min-height:min(86vh,760px);display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--navy-xdk)}
.hero-slides,.hero-slides div{position:absolute;inset:0}
.hero-slides div{background-size:cover;background-position:center;opacity:0;transform:scale(1.06);transition:opacity 1.4s ease,transform 7s linear}
.hero-slides div.on{opacity:1;transform:scale(1)}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,22,41,.94) 0%,rgba(14,22,41,.78) 45%,rgba(14,22,41,.25) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%;padding-top:80px;padding-bottom:80px}
.hero h1{color:#fff;max-width:14ch}
.hero h1 em{font-style:normal;color:#ff5a64}
.hero .lead{color:#c9d3e6;font-size:1.25rem;max-width:54ch}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:40px}
.hero-tags span{border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:40px;font-size:.92rem;color:#dbe3f2;background:rgba(255,255,255,.05)}
.hero-dots{position:absolute;z-index:3;right:28px;bottom:28px;display:flex;gap:8px}
.hero-dots button{width:34px;height:4px;border:0;background:rgba(255,255,255,.35);cursor:pointer;padding:0}
.hero-dots button.on{background:var(--red)}

/* page hero (inner pages) */
.page-hero{position:relative;padding:96px 0 72px;color:#fff;background:var(--navy-dk) center/cover no-repeat;overflow:hidden}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,22,41,.95),rgba(14,22,41,.6))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:clamp(2.4rem,5vw,3.8rem)}
.page-hero .lead{color:#c9d3e6}
.crumbs{font-size:.92rem;color:#9fb0cf;margin-bottom:14px}
.crumbs a{color:#dbe3f2}

/* strip of capabilities */
.strip{background:var(--red);color:#fff}
.strip .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.strip div{padding:26px 22px;border-right:1px solid rgba(255,255,255,.2);display:flex;gap:14px;align-items:center}
.strip div:last-child{border-right:0}
.strip svg{width:34px;height:34px;flex:none;opacity:.95}
.strip b{display:block;font-family:var(--head);font-size:1.25rem;letter-spacing:.04em;text-transform:uppercase;line-height:1.1}
.strip small{color:#ffd9dc;font-size:.9rem}

/* intro split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split.rev{grid-template-columns:1fr 1.05fr}
.split.rev .split-media{order:2}
.split-media{position:relative}
.split-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media .badge{position:absolute;left:-18px;bottom:-22px;background:var(--navy);color:#fff;padding:20px 24px;border-radius:var(--radius);box-shadow:var(--shadow);max-width:250px}
.split-media .badge b{display:block;font-family:var(--head);font-size:1.5rem;text-transform:uppercase;line-height:1.1}
.split-media .badge small{color:#c3cee4}
.ticks{list-style:none;padding:0;margin:20px 0 28px;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.ticks li{position:relative;padding-left:30px}
.ticks li::before{content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:3px;background:var(--red) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center/12px no-repeat}

/* product cards */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px}
.filters button{font-family:var(--head);font-weight:600;font-size:1rem;letter-spacing:.06em;text-transform:uppercase;padding:9px 18px;border:1px solid var(--line);background:#fff;border-radius:40px;cursor:pointer;color:var(--navy-dk);transition:.2s}
.filters button:hover{border-color:var(--navy)}
.filters button.on{background:var(--navy);border-color:var(--navy);color:#fff}
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.card-img{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--steel-2)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.card:hover .card-img img{transform:scale(1.06)}
.card-img .tag{position:absolute;left:14px;top:14px;background:var(--red);color:#fff;font-family:var(--head);font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.85rem;padding:4px 10px;border-radius:3px}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{margin-bottom:.35em}
.card-body p{color:var(--ink-2);font-size:.98rem}
.card-body ul{margin:0 0 18px;padding-left:18px;color:var(--ink-2);font-size:.95rem}
.card-body .more{margin-top:auto;font-family:var(--head);font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--red);display:inline-flex;align-items:center;gap:6px}
.card-body .more svg{width:16px;height:16px;transition:transform .2s}
.card:hover .more svg{transform:translateX(4px)}
.card.hide{display:none}

/* product detail rows */
.prod{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:start;padding:64px 0;border-bottom:1px solid var(--line);scroll-margin-top:100px}
.prod:nth-child(even) .prod-media{order:2}
.prod-media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;aspect-ratio:4/3;object-fit:cover;cursor:zoom-in}
.prod-media .thumbs{display:flex;gap:10px;margin-top:10px}
.prod-media .thumbs img{width:90px;height:68px;aspect-ratio:auto;box-shadow:none;border:2px solid transparent}
.prod-media .thumbs img:hover{border-color:var(--red)}
.spec{width:100%;border-collapse:collapse;margin:16px 0 24px;font-size:.96rem}
.spec th,.spec td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{width:38%;font-family:var(--head);font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--navy);font-size:1rem;background:var(--steel)}

/* industries */
.ind{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:28px 24px;transition:.25s}
.ind:hover{background:rgba(255,255,255,.08);border-color:var(--red)}
.ind svg{width:42px;height:42px;color:#ff5a64;margin-bottom:14px}
.ind h3{font-size:1.35rem;margin-bottom:.3em}
.ind p{font-size:.95rem;margin:0;color:#a9b6cf}

/* process */
.process{counter-reset:step;display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}
.process::before{content:"";position:absolute;top:30px;left:8%;right:8%;height:2px;background:repeating-linear-gradient(90deg,var(--navy) 0 10px,transparent 10px 18px);opacity:.35}
.step{text-align:center;padding:0 10px;position:relative}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:grid;place-items:center;width:62px;height:62px;margin:0 auto 16px;border-radius:50%;background:#fff;border:2px solid var(--navy);font-family:var(--head);font-weight:700;font-size:1.4rem;color:var(--navy);position:relative;z-index:1;transition:.25s}
.step:hover::before{background:var(--red);border-color:var(--red);color:#fff}
.step h4{font-size:1.2rem;text-transform:uppercase;margin-bottom:.3em}
.step p{font-size:.92rem;color:var(--ink-2);margin:0}

/* features */
.feat{padding:30px 26px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;border-top:4px solid var(--navy);transition:.25s}
.feat:hover{border-top-color:var(--red);box-shadow:var(--shadow)}
.feat svg{width:40px;height:40px;color:var(--red);margin-bottom:14px}
.feat h3{font-size:1.35rem}
.feat p{color:var(--ink-2);font-size:.97rem;margin:0}

/* chips (materials, codes) */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{background:#fff;border:1px solid var(--line);padding:8px 16px;border-radius:4px;font-weight:500;color:var(--navy-dk);font-size:.97rem}
.bg-navy .chips span{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.15);color:#e3e9f5}

/* gallery */
.gallery{columns:3 300px;column-gap:18px}
.gallery figure{margin:0 0 18px;break-inside:avoid;position:relative;border-radius:var(--radius);overflow:hidden;cursor:zoom-in;background:var(--steel-2)}
.gallery img{width:100%;transition:transform .5s}
.gallery figure:hover img{transform:scale(1.04)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:40px 16px 14px;background:linear-gradient(transparent,rgba(14,22,41,.88));color:#fff;font-family:var(--head);font-size:1.15rem;letter-spacing:.03em;opacity:0;transform:translateY(8px);transition:.25s}
.gallery figure:hover figcaption{opacity:1;transform:none}
.gallery figure.hide{display:none}

/* lightbox */
.lb{position:fixed;inset:0;z-index:100;background:rgba(8,12,24,.94);display:none;align-items:center;justify-content:center;padding:60px 70px}
.lb.open{display:flex}
.lb img{max-height:82vh;max-width:100%;border-radius:4px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lb p{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#dbe3f2;font-family:var(--head);font-size:1.2rem;letter-spacing:.04em;margin:0}
.lb button{position:absolute;background:rgba(255,255,255,.1);border:0;color:#fff;width:50px;height:50px;border-radius:50%;cursor:pointer;font-size:26px;line-height:1;display:grid;place-items:center}
.lb button:hover{background:var(--red)}
.lb .x{top:18px;right:18px}
.lb .prev{left:14px;top:50%;transform:translateY(-50%)}
.lb .next{right:14px;top:50%;transform:translateY(-50%)}

/* CTA band */
.cta{background:var(--navy) url("../images/shell-tube-heat-exchangers.jpg") center/cover;position:relative;color:#fff}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(47,70,119,.97),rgba(22,33,61,.88))}
.cta .wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-top:64px;padding-bottom:64px}
.cta h2{color:#fff;margin:0 0 .2em}
.cta p{margin:0;color:#c9d3e6;font-size:1.1rem}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:48px;align-items:start}
.info-card{background:var(--navy-dk);color:#c9d3e6;border-radius:var(--radius);padding:36px 32px}
.info-card h3{color:#fff}
.info-row{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.info-row:last-of-type{border-bottom:0}
.info-row svg{width:22px;height:22px;flex:none;color:#ff5a64;margin-top:3px}
.info-row b{display:block;color:#fff;font-family:var(--head);letter-spacing:.06em;text-transform:uppercase;font-size:1rem}
.info-row a{color:#e3e9f5}
.info-row a:hover{color:#fff;text-decoration:underline}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px 32px;box-shadow:var(--shadow)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-family:var(--head);font-weight:600;letter-spacing:.06em;text-transform:uppercase;font-size:.95rem;color:var(--navy-dk);margin-bottom:6px}
.field label i{color:var(--red);font-style:normal}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:1rem;padding:12px 14px;border:1px solid var(--line);border-radius:4px;background:var(--steel);color:var(--ink);transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--navy);background:#fff;box-shadow:0 0 0 3px rgba(47,70,119,.15)}
.field textarea{min-height:130px;resize:vertical}
.field.err input,.field.err select,.field.err textarea{border-color:var(--red)}
.hp{position:absolute;left:-9999px}
.form-msg{display:none;margin-top:16px;padding:14px 16px;border-radius:4px;font-weight:500}
.form-msg.ok{display:block;background:#e7f6ec;color:#1d6b38;border:1px solid #b8e2c5}
.form-msg.bad{display:block;background:#fdecee;color:#9b1c26;border:1px solid #f4c3c8}
.map{margin-top:24px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--steel-2)}
.map iframe{width:100%;height:100%;border:0}

/* footer */
.site-footer{background:var(--navy-xdk);color:#94a3c0;font-size:.96rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px}
.site-footer h4{color:#fff;font-size:1.2rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:18px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:9px}
.site-footer a{color:#c3cee4}
.site-footer a:hover{color:#fff}
.foot-logo{height:62px;width:auto;margin-bottom:18px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.88rem}

/* floating buttons */
.float{position:fixed;right:20px;bottom:20px;z-index:60;display:flex;flex-direction:column;gap:12px}
.float a,.float button{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 8px 20px -6px rgba(0,0,0,.4);border:0;cursor:pointer;transition:transform .2s}
.float a:hover,.float button:hover{transform:scale(1.08);color:#fff}
.float svg{width:26px;height:26px}
.float .wa{background:#25d366}
.float .call{background:var(--red)}
.float .top{background:var(--navy);opacity:0;pointer-events:none;transition:.25s}
.float .top.show{opacity:1;pointer-events:auto}

/* reveal animation */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.hero-slides div{transition:opacity .5s}}

/* responsive */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr);row-gap:36px}
  .process::before{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .strip .wrap{grid-template-columns:repeat(2,1fr)}
  .strip div:nth-child(2){border-right:0}
  .strip div:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.2)}
}
@media (max-width:1180px){
  .site-header{backdrop-filter:none;background:#fff}
  .nav-toggle{display:block;position:relative;z-index:2}
  .nav{position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;flex-direction:column;align-items:stretch;padding:90px 24px 24px;gap:0;transform:translateX(100%);visibility:hidden;transition:transform .3s,visibility .3s;box-shadow:-20px 0 40px rgba(0,0,0,.15);z-index:1;overflow-y:auto}
  .nav.open{transform:none;visibility:visible}
  .nav a{padding:14px 6px;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav .btn{margin:20px 0 0;justify-content:center;border-bottom:0}
  .nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}
@media (max-width:900px){
  .split,.split.rev,.contact-grid,.prod{grid-template-columns:1fr;gap:40px}
  .split.rev .split-media,.prod:nth-child(even) .prod-media{order:0}
  .topbar .hide-sm{display:none}
}
@media (max-width:640px){
  body{font-size:16px}
  .section{padding:64px 0}
  .wrap{padding:0 16px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .process{grid-template-columns:1fr 1fr}
  .ticks{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;padding-top:56px}
  .strip .wrap{grid-template-columns:1fr}
  .strip div{border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}
  .site-header .wrap{height:70px}
  .brand img{height:42px}
  .split-media .badge{left:12px;bottom:-18px}
  .hero-dots{right:16px;bottom:16px}
  .lb{padding:60px 10px}
  .form,.info-card{padding:26px 20px}
}

/* ---------- engineering calculators ---------- */
.calc-tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:2px solid var(--line);margin-bottom:32px}
.calc-tabs button{font-family:var(--head);font-weight:600;font-size:1.1rem;letter-spacing:.05em;text-transform:uppercase;padding:14px 22px;border:0;background:none;color:var(--ink-2);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-2px}
.calc-tabs button.on{color:var(--navy-dk);border-bottom-color:var(--red)}
.calc-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:36px;align-items:start}
.calc-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px}
.calc-box h3{font-size:1.4rem;margin-bottom:.2em}
.calc-box .sub{color:var(--ink-2);font-size:.95rem;margin-bottom:20px}
.calc-box .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-box .row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}
.calc-box .field{margin-bottom:14px}
.calc-box .field label{font-size:.88rem}
.calc-box .field small{display:block;color:var(--ink-2);font-size:.82rem;margin-top:4px}
.calc-box input[readonly]{color:var(--ink-2)}
.inline{display:flex;gap:8px}
.inline input{flex:1}
.inline select{width:auto;flex:none}
.calc-out{position:sticky;top:96px;background:var(--navy-dk);color:#c9d3e6;border-radius:var(--radius);padding:28px 26px}
.calc-out h3{color:#fff;font-size:1.4rem}
.res{width:100%;border-collapse:collapse;margin-bottom:16px}
.res th,.res td{padding:10px 8px;border-bottom:1px solid rgba(255,255,255,.1);text-align:left;font-size:.95rem;vertical-align:top}
.res th{font-weight:500;color:#a9b6cf;width:55%}
.res td b{color:#fff;font-size:1.12rem;font-family:var(--head);letter-spacing:.02em}
.res small{color:#8b9abb}
.res tr.hl td b{color:#ff8088;font-size:1.4rem}
.res tr.ok td b{color:#6fe39a}
.res tr.bad td b{color:#ff6b75}
.formula{font-size:.88rem;color:#a9b6cf;background:rgba(255,255,255,.05);padding:12px 14px;border-radius:4px;border-left:3px solid var(--red)}
.formula b{color:#fff}
.calc-note{padding:10px 14px;border-radius:4px;font-size:.92rem;margin-top:10px}
.calc-note.ok{background:rgba(111,227,154,.12);color:#9ff0bb}
.calc-note.bad{background:rgba(255,107,117,.14);color:#ffb0b6}
.calc-note.warn{background:rgba(255,196,87,.12);color:#ffd88f}
.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.calc-actions .btn{padding:12px 18px;font-size:.98rem}
.disclaimer{font-size:.88rem;color:var(--ink-2);background:var(--steel);border-left:4px solid var(--navy);padding:14px 18px;border-radius:4px;margin-top:36px}
@media (max-width:900px){.calc-grid{grid-template-columns:1fr}.calc-out{position:static}}
@media (max-width:640px){.calc-box .row{grid-template-columns:1fr}.calc-box .row3{grid-template-columns:1fr 1fr 1fr}.calc-tabs button{padding:12px 12px;font-size:1rem}}
@media print{
  .topbar,.site-header,.site-footer,.float,.calc-tabs,.calc-actions,.page-hero,.cta{display:none!important}
  .calc-panel[hidden]{display:none!important}
  .calc-grid{grid-template-columns:1fr 1fr}
  .calc-out{background:#fff;color:#000;border:1px solid #999;position:static}
  .calc-out h3,.res td b,.res th,.formula,.formula b,.res small{color:#000!important}
  .res th,.res td{border-color:#ccc}
}

/* ---------- product illustrations (no photo yet) ---------- */
.illu-wrap{width:100%;height:100%;background-color:var(--navy-dk);background-image:linear-gradient(rgba(159,182,228,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(159,182,228,.08) 1px,transparent 1px);background-size:22px 22px;display:grid;place-items:center;position:relative}
.illu-wrap .illu{width:82%;height:82%}
.illu-wrap.big{aspect-ratio:4/3;border-radius:var(--radius);box-shadow:var(--shadow)}
.illu-wrap.big span{position:absolute;bottom:14px;left:0;right:0;text-align:center;font-size:.85rem;color:#8b9abb}
.card:hover .illu{transform:scale(1.04);transition:transform .6s}

/* ---------- stats band ---------- */
.stats{background:var(--navy-dk);color:#fff;border-top:4px solid var(--red)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:38px 20px;text-align:center;border-right:1px solid rgba(255,255,255,.1)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:var(--head);font-size:clamp(2.4rem,4.5vw,3.4rem);font-weight:700;line-height:1;color:#fff}
.stat b small{font-size:.5em;color:#ff5a64;font-weight:600}
.stat>span{display:block;margin-top:8px;font-family:var(--head);letter-spacing:.14em;text-transform:uppercase;color:#a9b6cf;font-size:.95rem}

/* ---------- clients ---------- */
.clients{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:16px}
.client{background:#fff;border:1px solid var(--line);border-radius:var(--radius);height:110px;display:grid;place-items:center;padding:16px;transition:.25s}
.client:hover{box-shadow:var(--shadow);border-color:var(--navy);transform:translateY(-3px)}
.client img{max-height:70px;max-width:100%;object-fit:contain}

/* ---------- equipment lists ---------- */
.equip-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:22px}
.equip{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.equip-head{display:flex;align-items:center;gap:12px;background:var(--red);color:#fff;padding:14px 20px}
.equip-head svg{width:26px;height:26px}
.equip-head h3{color:#fff;margin:0;font-size:1.35rem;text-transform:uppercase;letter-spacing:.04em}
.equip ul{list-style:none;margin:0;padding:6px 20px 12px}
.equip li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:.98rem}
.equip li:last-child{border-bottom:0}
.equip li b{flex:none;font-family:var(--head);font-size:1.1rem;color:var(--red);white-space:nowrap}

@media (max-width:900px){.stats .wrap{grid-template-columns:1fr 1fr}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.1)}}
@media (max-width:640px){.clients{grid-template-columns:repeat(2,1fr)}.client{height:90px}.equip-grid{grid-template-columns:1fr}}