@font-face{font-family:Inter;src:url('assets/InterVariable.woff2') format('woff2');font-weight:100 900;font-style:normal;font-display:swap}
/* Keep the page width fixed when a contact dialog locks body scrolling. */
html{scrollbar-gutter:stable}
:root{--ink:#102342;--muted:#617087;--blue:#075bff;--line:#e1e7ef;--paper:#fff;font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none;font-optical-sizing:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a{touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible{outline:3px solid var(--blue);outline-offset:5px}h1,h2,h3,p{margin:0}img{display:block;max-width:100%}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.55;stroke-linecap:round;stroke-linejoin:round;flex:0 0 20px}p{font-size:16px;line-height:1.6;color:var(--muted)}::selection{color:var(--ink);background:#dbe8ff}.shell{width:min(1480px,calc(100% - 96px));margin-inline:auto}.skip-link{position:fixed;top:-80px;left:20px;z-index:100;background:var(--blue);color:#fff;padding:15px 20px}.skip-link:focus{top:12px}.eyebrow{font-size:12px;line-height:1.5;font-weight:550;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.site-header{border-bottom:1px solid var(--line)}.header-inner{height:76px;display:flex;justify-content:space-between;align-items:center;gap:28px}.wordmark{font-size:19px;letter-spacing:.16em;font-weight:720;line-height:1;display:inline-flex;align-items:baseline;white-space:nowrap}.logo-dot{display:block;flex:0 0 6px;width:6px;height:6px;background:var(--blue);margin-left:5px}.header-right{display:flex;align-items:center;gap:35px;font-size:14px}.header-location{color:var(--muted);border-right:1px solid var(--line);padding-right:35px}.header-contact{display:flex;align-items:center;gap:15px;min-height:44px}.header-contact span{font-size:20px;color:var(--blue)}
.hero{display:grid;grid-template-columns:57% 43%;align-items:center;position:relative;isolation:isolate;min-height:452px;padding-block:28px 24px}.hero-copy{position:relative;min-width:0;z-index:2;padding:15px 20px 15px 0}.hero-copy>.eyebrow{color:#456381;margin-bottom:17px}.hero h1{font-size:clamp(36px,3.72vw,53px);font-weight:570;letter-spacing:-.047em;line-height:1.075}.hero h1 span{display:block}.accent{color:var(--blue)}.hero-description{font-size:16px;line-height:1.65;margin-top:20px;max-width:550px}.contact-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:25px}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:49px;padding:13px 17px;border:1px solid transparent;border-radius:3px;font-size:14px;line-height:1.45;font-weight:510;text-align:center;transition:background .2s,border-color .2s,color .2s}.button-primary{background:var(--blue);color:#fff}.button-secondary{border-color:#cbd5e3;background:transparent;color:var(--ink)}.button-secondary svg{color:var(--blue)}.contact-hint{font-size:13px;margin-top:13px;line-height:1.5}
/* Dry matte-steel product photography with exact curved safety labels. */
.hero-visual{position:relative;min-width:0;display:flex;flex-direction:column;align-items:stretch;isolation:isolate;padding:0}.cylinder-stage{position:relative;width:100%;height:402px;isolation:isolate;touch-action:pan-y;user-select:none;-webkit-user-select:none;--sprite-width:195px;overflow:clip;overflow-clip-margin:30px}
.studio-floor{position:absolute;left:0;right:0;bottom:-3px;height:70px;background:radial-gradient(ellipse at 54% 55%,#d8e0eb30,transparent 68%)}.cylinder-stage::after{content:'';position:absolute;left:-60%;right:84%;top:0;bottom:-7%;z-index:60;pointer-events:none;background:linear-gradient(90deg,#fff 0%,#fff 80%,#fff0 100%)}
.cylinder-sprite{position:absolute;bottom:24px;left:46%;width:var(--sprite-width);margin:0 0 0 calc(var(--sprite-width) * -.5);transform-origin:50% 100%;will-change:transform;pointer-events:none}.cylinder-sprite:not(:first-of-type){opacity:0}.cylinder-product{position:relative;filter:brightness(var(--cylinder-light,1)) blur(var(--cylinder-blur,0px))}.cylinder-product>img{width:100%;height:auto;pointer-events:none;-webkit-user-drag:none}.cylinder-sheen{position:absolute;inset:0;background:linear-gradient(100deg,transparent 25%,#ffffff00 38%,#ffffff5c 48%,#ffffff00 61%,transparent 78%);background-size:230% 100%;background-position:var(--shine-position,50%) 0;mask:url('assets/cylinder-matte-base.webp') center/100% 100% no-repeat;-webkit-mask:url('assets/cylinder-matte-base.webp') center/100% 100% no-repeat;mix-blend-mode:soft-light;opacity:.14;pointer-events:none}.cylinder-haze{position:absolute;inset:0;background:#fff;mask:url('assets/cylinder-matte-base.webp') center/100% 100% no-repeat;-webkit-mask:url('assets/cylinder-matte-base.webp') center/100% 100% no-repeat;opacity:var(--cylinder-fog,0);pointer-events:none}.cylinder-contact{position:absolute;left:7%;right:7%;height:2.3%;bottom:-.7%;background:radial-gradient(ellipse,#131b2399 2%,#1b283957 35%,#293b501c 59%,transparent 74%);filter:blur(1.6px);z-index:-1}.cylinder-sprite::before{content:'';position:absolute;left:-49%;right:-25%;height:7%;bottom:-2%;background:radial-gradient(ellipse,#24374f40 3%,#34465b26 33%,#34465b0d 56%,transparent 73%);filter:blur(9px);z-index:-2}.cylinder-reflection{position:absolute;top:100%;left:0;width:100%;height:100%;transform:scaleY(-1);mask-image:linear-gradient(to top,#00000080,transparent 15%);-webkit-mask-image:linear-gradient(to top,#00000080,transparent 15%);opacity:.17;filter:blur(1.2px);pointer-events:none;z-index:-3}.carousel-dots{position:relative;z-index:70;display:flex;justify-content:center;align-items:center;gap:7px;height:16px;margin:0 8% 0 0}.carousel-dot{width:4px;height:4px;border-radius:4px;background:#a6b4c7;transition:width .4s,background .4s}.carousel-dot[data-active="true"]{width:18px;background:var(--blue)}
.range{display:grid;grid-template-columns:1.05fr 1fr;gap:35px;padding-block:27px 29px;border-top:1px solid var(--line)}.range-products{align-self:center}.gas-list{font-size:clamp(18px,1.72vw,23px);font-weight:570;letter-spacing:-.035em;color:var(--ink);margin-top:12px;line-height:1.5}.gas-list span{font-weight:400;color:#94a3b7;margin-inline:2px}.range-note{margin-top:5px;font-size:14px}.range-terms{padding-left:30px;border-left:1px solid var(--line);align-self:center}.range-terms p{font-size:14px;line-height:1.6}.range-terms p+p{margin-top:8px}
.contact-section{background:#f5f8fc;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;padding-block:32px 35px}.personal-contact h2{font-size:35px;line-height:1.15;font-weight:570;letter-spacing:-.045em;margin-top:10px}.name-dot{color:var(--blue)}.personal-description{font-size:16px;line-height:1.55;margin-top:10px}.personal-contact .contact-actions{margin-top:19px}.company{padding-left:30px;border-left:1px solid #dce4ef;align-self:center;min-width:0;scroll-margin-top:24px}.company h3{font-size:20px;font-weight:570;letter-spacing:-.015em;margin-top:12px}.company dl{margin:17px 0 0;font-size:14px;line-height:1.55}.company dl>div{display:grid;grid-template-columns:98px 1fr;gap:14px;margin-top:8px}.company dt{color:var(--muted)}.company dd{margin:0}.company address{font-style:normal}.footer{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;font-size:12px;color:var(--muted)}.footer nav{display:flex;gap:27px}.footer a{display:inline-flex;align-items:center;gap:10px;min-height:44px}.footer a span{color:var(--blue);font-size:18px}
dialog{border:1px solid var(--line);padding:0;width:min(460px,calc(100% - 32px));border-radius:6px;color:var(--ink);box-shadow:0 25px 100px #10234230;max-height:calc(100svh - 40px);overflow:auto}dialog::backdrop{background:#10234255;backdrop-filter:blur(4px)}.dialog-inner{padding:34px 30px 30px}.dialog-close{position:absolute;top:7px;right:7px;width:44px;height:44px;border:0;background:none;color:var(--muted);font-size:26px;line-height:1}.dialog-inner>.eyebrow{padding-right:20px}.dialog-inner h2{font-size:28px;font-weight:570;letter-spacing:-.035em;line-height:1.2;margin-top:17px}.dialog-inner .preview-contact{color:var(--blue);font-weight:550;font-size:18px;margin-top:20px;overflow-wrap:anywhere}.dialog-inner #preview-description{margin-top:16px;font-size:15px}.dialog-done{margin-top:24px;min-width:130px}.no-script{font-size:14px;color:var(--muted);padding-block:20px}body:has(dialog[open]){overflow:hidden}
/* Static fallback before script initialization or when JavaScript is disabled. */
.cylinder-sprite[data-refrigerant="R134a"]{opacity:1}
@media(hover:hover){.button-primary:hover{background:#004ad8}.button-secondary:hover{background:#eaf1ff;border-color:#97b8ee}.header-contact:hover,.footer a:hover{color:var(--blue)}}
@media(min-width:1500px){.hero{min-height:470px}.cylinder-stage{height:425px}}
@media(max-width:1100px){.shell{width:calc(100% - 64px)}.hero{grid-template-columns:58% 42%}.hero h1{font-size:clamp(35px,4.2vw,46px)}.hero .contact-actions,.personal-contact .contact-actions{gap:10px}.button{padding:12px 13px;font-size:13px}.button svg{width:18px;height:18px;flex-basis:18px}.contact-grid{grid-template-columns:1.16fr 1fr;gap:24px}.company{padding-left:24px}.company dl>div{grid-template-columns:85px 1fr;gap:10px}.gas-list{font-size:19px}.range{gap:25px}.range-terms{padding-left:25px}}
@media(max-width:900px){.hero .contact-actions{align-items:flex-start;gap:8px}.hero{min-height:440px}.hero h1{font-size:36px}.hero-copy{padding-right:0}.hero-description{font-size:16px}.desktop-break{display:none}.cylinder-stage{height:345px}.hero .button-secondary{border-color:transparent;padding-inline:0;min-height:40px}.hero .contact-actions{flex-direction:column;margin-top:20px}.hero .contact-hint{max-width:300px;margin-top:8px}.range{grid-template-columns:1fr;gap:15px}.range-terms{padding-left:0;border-left:0;max-width:720px}.range-terms p+p{margin-top:4px}.contact-grid{grid-template-columns:1fr 1fr;gap:25px}.personal-contact .contact-actions{align-items:flex-start;flex-direction:column}.personal-contact .button-secondary{min-height:40px;border-color:transparent;padding-inline:0}.company dl>div{grid-template-columns:1fr;gap:1px;margin-top:9px}.company dt{font-size:12px}}
@media(max-width:640px){.shell{width:calc(100% - 40px)}.header-inner{height:65px;gap:12px}.wordmark{font-size:15px;letter-spacing:.13em}.logo-dot{width:5px;height:5px;flex-basis:5px}.header-location{display:none}.header-contact{font-size:12px;gap:8px;max-width:132px;line-height:1.4}.header-contact span{font-size:18px}.hero{grid-template-columns:1fr;padding-block:26px 12px;min-height:0}.hero-copy{padding:0}.hero-copy>.eyebrow{font-size:11px;letter-spacing:.085em;margin-bottom:14px}.hero h1{font-size:clamp(32px,8.2vw,46px);line-height:1.08}.hero-description{margin-top:16px;font-size:16px;max-width:460px}.hero .contact-actions{flex-direction:row;gap:8px 18px;margin-top:20px}.button{font-size:14px;padding:13px 17px;min-height:49px}.button svg{width:20px;height:20px;flex-basis:20px}.hero .button-secondary{min-height:44px}.hero .contact-hint{max-width:100%;font-size:12px;margin-top:10px}.hero-visual{width:min(100%,380px);margin:8px auto 0}.cylinder-stage{height:270px;overflow-clip-margin:12px}.carousel-dots{height:14px}.range{padding-block:24px;gap:15px}.gas-list{font-size:19px;line-height:1.7;margin-top:9px}.range-note{font-size:14px;margin-top:3px}.range-terms p{font-size:14px}.range-terms p+p{margin-top:7px}.contact-grid{grid-template-columns:1fr;gap:27px;padding-block:27px}.personal-contact h2{font-size:34px}.personal-description{font-size:16px}.personal-contact .contact-actions{flex-direction:row;gap:8px 18px;margin-top:18px}.personal-contact .button-secondary{min-height:44px}.company{border-left:0;border-top:1px solid #dce4ef;padding:23px 0 0;align-self:start}.company h3{font-size:19px;margin-top:10px}.company dl{margin-top:15px}.company dl>div{grid-template-columns:90px 1fr;gap:14px;margin-top:9px}.company dt{font-size:13px}.footer{font-size:11px;gap:10px;min-height:64px}.footer nav{gap:15px}.footer a{gap:6px}.dialog-inner{padding:30px 23px 24px}}
@media(max-width:640px){
  .cylinder-sprite{will-change:transform,opacity;contain:layout style}
  .cylinder-product{will-change:filter;transform:translateZ(0);backface-visibility:hidden}
  .cylinder-reflection,.cylinder-sheen,.cylinder-haze{backface-visibility:hidden}
}
@media(max-width:359px){.shell{width:calc(100% - 32px)}.wordmark{font-size:13px}.header-contact{font-size:11px;max-width:112px}.hero h1{font-size:30px}.hero-copy>.eyebrow{font-size:10px}.button{font-size:13px;padding:12px 14px}.hero-description{font-size:15px}.footer{align-items:flex-start;flex-direction:column;gap:0;padding-top:16px;padding-bottom:8px}.company dl>div{grid-template-columns:80px 1fr;gap:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}.cylinder-sprite{will-change:auto}}
@media print{.site-header,.hero-visual,.contact-actions,.contact-hint,.footer nav,dialog,.no-script{display:none!important}.shell{width:100%}.hero,.range,.contact-grid{display:block;min-height:0;padding:20px 0}.range-terms,.company{padding:16px 0 0;border:0}.hero h1{font-size:32px}.contact-section{background:#fff}.footer{min-height:40px}}