:root{
  --ink-0:#0e1319;   /* page */
  --ink-1:#141c26;   /* section */
  --ink-2:#1c2733;   /* cards / bands */
  --line:rgba(255,255,255,.16);
  --gold:#f4b23c;    /* accent */
  --gold-deep:#c88a26;
  --rust:#c96a3a;    /* corrosion accent, used sparingly */
  --steel:#ccd6e0;
  --ink:#eef2f6;
  --muted:#aebdcc;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Manrope',system-ui,sans-serif;background:var(--ink-0);color:var(--ink);-webkit-font-smoothing:antialiased;line-height:1.6}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 30px}
h1,h2,h3,h4,.display{font-family:'Lora','Playfair Display',serif;font-weight:500;letter-spacing:-.3px}

/* ribbon */
.ribbon{background:var(--ink-2);border-bottom:1px solid var(--line);font-size:13px;color:var(--steel)}
.ribbon .wrap{display:flex;gap:20px;align-items:center;justify-content:center;padding:9px 30px;flex-wrap:wrap}
.ribbon strong{color:var(--gold);font-weight:600}
.ribbon .sep{width:1px;height:13px;background:var(--line)}
.ribbon a:hover strong{text-decoration:underline}

/* nav */
header{position:sticky;top:0;z-index:30;background:rgba(14,19,25,.97);border-bottom:1px solid var(--line);transform:translateZ(0)}
nav{display:flex;align-items:center;justify-content:space-between;padding:15px 30px;max-width:1180px;margin:0 auto}
.brand{display:flex;align-items:center;gap:11px}
.crown{width:48px;height:48px;flex-shrink:0}
.crown svg{width:100%;height:100%;display:block}
.brand-txt{display:flex;flex-direction:column;line-height:1.03}
.brand-txt b{font-family:'Lora','Playfair Display',serif;font-weight:600;font-size:21px;letter-spacing:.2px}
.brand-txt span{font-size:11.5px;letter-spacing:2.5px;color:var(--muted);text-transform:uppercase;margin-top:3px}
.navlinks{display:flex;gap:26px;align-items:center;font-size:15.5px;color:var(--steel)}
.navlinks a:hover{color:var(--gold)}
.navcta{display:flex;align-items:center;gap:16px}
.navcta .phone{font-size:15px;font-weight:600;color:var(--ink)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:14.5px;padding:12px 22px;border-radius:8px;cursor:pointer;border:1px solid transparent;transition:.18s;font-family:'Manrope',sans-serif}
.btn-primary{background:var(--gold);color:#20160a}
.btn-primary:hover{background:#ffc450;transform:translateY(-2px);box-shadow:0 8px 22px rgba(244,178,60,.38)}
.btn-ghost{border:1.5px solid var(--gold);color:var(--gold)}
.btn-ghost:hover{background:var(--gold);color:#20160a;transform:translateY(-2px);box-shadow:0 8px 22px rgba(244,178,60,.38)}
.btn-lg{padding:15px 28px;font-size:15.5px}

/* hero — full-bleed image */
.hero{position:relative;overflow:hidden;min-height:640px;display:flex;align-items:center;border-bottom:1px solid var(--line)}
.hero .scene{position:absolute;inset:0;z-index:0}
.hero .scene img{width:100%;height:100%;object-fit:cover;object-position:center;display:block;animation:kenburns 40s ease-in-out infinite alternate;transform-origin:55% 45%;will-change:transform;backface-visibility:hidden}
@keyframes kenburns{from{transform:scale(1.01)}to{transform:scale(1.07) translate3d(-1%,-.6%,0)}}
@media (prefers-reduced-motion:reduce){.hero .scene img{animation:none;transform:none}}
.hero .overlay{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(14,19,25,.92) 0%,rgba(14,19,25,.72) 38%,rgba(14,19,25,.38) 68%,rgba(14,19,25,.18) 100%)}
.hero-inner{position:relative;z-index:2;width:100%;padding:84px 0;display:grid;grid-template-columns:1fr;align-items:center}
.hero-inner > div{max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;letter-spacing:3px;text-transform:uppercase;color:var(--gold);font-weight:600;margin-bottom:20px}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--gold)}
.hero h1{font-size:58px;line-height:1.08;color:#fff}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero .lede{margin-top:22px;font-size:19px;color:#e2e9f0;max-width:540px}
.cta-row{margin-top:30px;display:flex;gap:13px;flex-wrap:wrap}
.chips{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:#e2e9f0;border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:7px 14px;background:rgba(14,19,25,.45)}
.chip i{color:var(--gold)}
/* hero image (scaled pipe) */
.hero-media{position:relative;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--ink-1)}
.hero-media img{width:100%;height:440px;object-fit:cover;display:block}
.hero-media .tag{position:absolute;left:14px;top:14px;background:rgba(201,106,58,.92);color:#fff;font-size:11.5px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;padding:6px 12px;border-radius:6px}
.hero-media .cap{position:absolute;left:0;right:0;bottom:0;padding:14px 16px;background:linear-gradient(180deg,transparent,rgba(10,14,18,.94));font-size:14.5px;color:#e2e9f0}

/* sections */
.section{padding:72px 0}
.section.alt{background:var(--ink-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin:0 auto 6px;text-align:center}
.section-head .eyebrow{justify-content:center}
.section-head h2{font-size:34px;color:#fff}
.section-head p{margin-top:12px;color:var(--steel);font-size:16.5px}

/* problem split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split img{width:100%;border-radius:14px;border:1px solid var(--line);display:block}
.split h2{font-size:32px;color:#fff;margin-bottom:14px}
.split p{color:var(--steel);margin-bottom:14px;font-size:16px}
.problem-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:6px}
.problem-list li{display:flex;gap:11px;align-items:flex-start;color:var(--steel);font-size:15.5px}
.problem-list i{color:var(--rust);margin-top:3px;flex-shrink:0}

/* feature grid */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:36px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:36px}
.card{background:var(--ink-2);border:1px solid var(--line);border-radius:14px;padding:26px 24px;transition:.18s}
.card:hover{border-color:rgba(244,178,60,.5);transform:translateY(-3px)}
.card .ic{width:46px;height:46px;border-radius:11px;background:rgba(244,178,60,.12);border:1px solid rgba(244,178,60,.3);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--gold);font-size:22px}
.card h4{font-size:18px;color:#fff;margin-bottom:8px}
.card p{color:var(--muted);font-size:15.5px}

/* applications two-col */
.apps{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:36px}
.apps .panel{border:1px solid var(--line);border-radius:16px;padding:30px;background:var(--ink-2)}
.apps .panel h3{font-size:22px;color:#fff;margin-bottom:6px}
.apps .panel .kicker{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--gold);font-weight:600}
.apps ul{list-style:none;margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:9px}
.apps li{display:flex;gap:8px;align-items:flex-start;font-size:14.5px;color:var(--steel)}
.apps li i{color:var(--gold);margin-top:3px;flex-shrink:0}

/* proof band */
.proof{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.proof .item{text-align:center}
.proof .item .n{font-family:'Manrope',sans-serif;font-size:30px;font-weight:600;color:var(--gold)}
.proof .item p{font-size:14.5px;color:var(--muted);margin-top:4px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px}
.gallery figure{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--ink-2)}
.gallery img{width:100%;height:210px;object-fit:cover;display:block}
.gallery figcaption{padding:11px 14px;font-size:14px;color:var(--muted)}

/* conductivity comparison */
.cond{max-width:700px;margin:34px auto 0;border:1px solid var(--line);border-radius:14px;background:var(--ink-1);padding:20px 24px}
.cond .row{display:grid;grid-template-columns:160px 1fr 108px;align-items:center;gap:16px;padding:7px 0}
.cond .head{padding-bottom:9px;margin-bottom:4px;border-bottom:1px solid var(--line)}
.cond .head span{font-size:11.5px;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}
.cond .head .u{text-align:right}
.cond .lab{font-size:14.5px;color:var(--steel)}
.cond .track{height:14px;background:var(--ink-2);border:1px solid var(--line);border-radius:5px;overflow:hidden}
.cond .fill{height:100%}
.cond .val{font-family:'Manrope',sans-serif;font-size:16px;color:var(--steel);text-align:right}
.cond .steel .fill{background:linear-gradient(90deg,#7f95aa,#b4c0cd)}
.cond .steel .lab,.cond .steel .val{color:#fff}
.cond .scale .fill{background:linear-gradient(90deg,#8a3d22,#c96a3a)}
.cond .foot{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted);line-height:1.6}
.cond .foot a{color:var(--gold);font-weight:600}
@media(max-width:560px){.cond .row{grid-template-columns:110px 1fr 70px;gap:10px}.cond .lab{font-size:13px}}

/* NSF strip */
.nsf{display:flex;align-items:center;gap:22px;flex-wrap:wrap;justify-content:center;background:var(--ink-2);border:1px solid var(--line);border-radius:14px;padding:22px 28px;margin-top:30px}
.nsf .badge{font-family:'Manrope';font-weight:600;color:var(--gold);border:1px solid var(--gold-deep);border-radius:8px;padding:8px 14px;font-size:14px;letter-spacing:.5px}
.nsf span{color:var(--steel);font-size:14.5px}
.nsf a{color:var(--gold);font-weight:600}

/* final CTA */
.finalcta{text-align:center;padding:84px 0;background:radial-gradient(800px 400px at 50% 120%, rgba(244,178,60,.12), transparent 60%),var(--ink-1);border-top:1px solid var(--line)}
.finalcta h2{font-size:40px;color:#fff;margin-bottom:14px}
.finalcta p{color:var(--steel);font-size:17px;max-width:560px;margin:0 auto 26px}
.finalcta .cta-row{justify-content:center}

/* footer */
footer{background:var(--ink-0);border-top:1px solid var(--line);padding:52px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.foot-brand p{color:var(--muted);font-size:14px;margin-top:14px;max-width:290px}
.foot-col h5{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--steel);margin-bottom:13px}
.foot-col a{display:block;color:var(--muted);font-size:14px;margin-bottom:9px}
.foot-col a:hover{color:var(--gold)}
.foot-bottom{border-top:1px solid var(--line);margin-top:38px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted)}
.foot-bottom a{color:var(--muted)}.foot-bottom a:hover{color:var(--gold)}

/* case study / prose */
.subhero{background:radial-gradient(900px 420px at 20% -10%,rgba(244,178,60,.10),transparent 60%),var(--ink-1);border-bottom:1px solid var(--line);padding:60px 0}
.subhero h1{font-size:46px;color:#fff;max-width:800px}
.subhero .lead{margin-top:18px;font-size:19px;color:var(--steel);max-width:760px}
.prose{max-width:820px;margin:0 auto}
.prose h3{font-size:23px;color:#fff;margin:34px 0 10px}
.prose p{color:var(--steel);margin-bottom:14px;font-size:16px}
.prose ul{margin:0 0 16px 20px;color:var(--steel)}
.prose li{margin-bottom:9px;font-size:15.5px}
.prose a.inline{color:var(--gold);font-weight:600}
/* prominent case-study band */
.cta-band{background:linear-gradient(100deg,rgba(244,178,60,.16),rgba(201,106,58,.10));border:1px solid rgba(244,178,60,.35);border-radius:16px;padding:36px 40px;margin-top:38px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-band .t{max-width:640px}
.cta-band .eyebrow{margin-bottom:12px}
.cta-band h3{font-size:30px;color:#fff;line-height:1.1;margin-bottom:10px}
.cta-band p{color:var(--steel);font-size:16.5px}
@media(max-width:700px){.cta-band{padding:26px}.cta-band h3{font-size:24px}}
/* input adornments */
.f .inp{position:relative}
.f .inp .sym{position:absolute;top:50%;transform:translateY(-50%);left:12px;color:var(--muted);font-family:'Manrope',sans-serif;font-size:16px;pointer-events:none}
.f .inp.pct .sym{left:auto;right:12px}
.f .inp input{padding-left:26px}
.f .inp.pct input{padding-left:12px;padding-right:26px}
/* calculator */
.calc{background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:26px;margin:26px auto 0;max-width:820px}
.calc h3{font-size:19px;color:#fff;margin-bottom:4px}
.calc .hint{font-size:14px;color:var(--muted);margin-bottom:18px}
.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc .f label{display:block;font-size:12.5px;color:var(--steel);margin-bottom:5px}
.calc .f input{width:100%;padding:11px 12px;border-radius:8px;background:var(--ink-0);border:1px solid var(--line);color:var(--ink);font-family:'Manrope',sans-serif;font-size:16px}
.calc .f input:focus{outline:none;border-color:var(--gold)}
.results{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.results .r{background:var(--ink-0);border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center}
.results .r .n{font-family:'Manrope',sans-serif;font-size:27px;color:var(--steel)}
.results .r.big{border-color:rgba(127,214,138,.4)}
.results .r.big .n{color:#7fd68a}
.results .r p{font-size:13.5px;color:var(--muted);margin-top:4px}
.payback{text-align:center;margin-top:18px;font-size:16.5px;color:#fff}
.payback b{color:var(--gold)}
/* comparison table */
.ktable{width:100%;border-collapse:collapse;margin:22px auto 0;max-width:820px;font-size:15px}
.ktable th,.ktable td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.ktable thead th{color:var(--steel);font-family:'Manrope',sans-serif;font-weight:500;font-size:12.5px;text-transform:uppercase;letter-spacing:.5px}
.ktable td.num{text-align:right;font-family:'Manrope',sans-serif}
.ktable .bad{color:#e08a6a}
.ktable .good{color:#7fd68a}
.disclaimer{max-width:820px;margin:26px auto 0;font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;line-height:1.7}
.disclaimer a{color:var(--gold)}
@media(max-width:700px){.calc-grid,.results{grid-template-columns:1fr}.subhero h1{font-size:34px}}

/* modal + form */
.modal-overlay{position:fixed;inset:0;background:rgba(6,9,13,.8);display:none;align-items:flex-start;justify-content:center;z-index:100;overflow-y:auto;padding:44px 16px}
.modal-overlay.open{display:flex}
.modal{position:relative;max-width:470px;width:100%;margin:auto}
.modal-close{position:absolute;top:-14px;right:-8px;width:38px;height:38px;border-radius:50%;background:var(--ink-2);border:1px solid var(--line);color:var(--ink);font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.modal-close:hover{border-color:var(--gold);color:var(--gold)}
body.no-scroll{overflow:hidden}
.formcard{background:var(--ink-2);border:1px solid var(--line);border-radius:16px;padding:26px}
.formcard h3{font-size:19px;color:#fff;margin-bottom:3px}
.formcard .sub{font-size:14px;color:var(--muted);margin-bottom:18px}
.field{margin-bottom:11px}
.field label{display:block;font-size:12px;color:var(--steel);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:11px 12px;border-radius:8px;background:var(--ink-0);border:1px solid var(--line);color:var(--ink);font-family:inherit;font-size:16px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--gold)}
.field textarea{resize:vertical;min-height:58px}
.field.invalid input,.field.invalid select{border-color:var(--rust)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.consent{display:flex;gap:9px;align-items:flex-start;font-size:12px;color:var(--steel);margin:9px 0;line-height:1.45}
.consent input{margin-top:2px;accent-color:var(--gold);width:15px;height:15px;flex-shrink:0}
.consent a{color:var(--gold);text-decoration:underline}
.formcard .btn-primary{width:100%;justify-content:center;margin-top:8px}
.form-error{display:none;font-size:12.5px;color:#f0a58e;margin:6px 0}
.fineprint{margin-top:11px;font-size:11px;color:var(--muted);text-align:center}
.form-success{display:none;text-align:center;padding:22px 8px}
.form-success i{font-size:34px;color:var(--gold)}
.form-success h4{font-size:18px;color:#fff;margin:10px 0 6px}
.form-success p{font-size:13.5px;color:var(--steel)}

@media(max-width:900px){
  .hero-inner,.split,.apps{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:42px}
  .grid3,.grid4,.proof,.gallery{grid-template-columns:1fr 1fr}
  .apps ul{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .navlinks{display:none}
  .section-head h2,.finalcta h2{font-size:30px}
}
@media(max-width:560px){
  .grid3,.grid4,.proof,.gallery,.foot-grid,.row2{grid-template-columns:1fr}
}