:root{--navy:#0b2d43;--deep:#092333;--blue:#28658e;--ice:#c5dfef;--paper:#fff;--pale:#f1f4f7;--line:#cfd9df;--text:#193746;--muted:#506570}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;font-family:Arial,Helvetica,sans-serif;line-height:1.55;color:var(--text);background:var(--paper)}a{color:inherit;text-decoration:none}button,select,textarea{font:inherit}a,button,summary,select,textarea{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #c9871c;outline-offset:5px}.skip{position:absolute;top:-100px;background:white;padding:14px;z-index:20}.skip:focus{top:5px;left:5px}.review{background:#edf2f6;color:#3f5a6b;text-align:center;font-size:11px;letter-spacing:1.1px;padding:5px 15px}.site-header{max-width:1440px;margin:auto;padding:17px 6%;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;flex-shrink:0;align-items:center}.brand img{display:block;object-fit:contain;width:56px;height:58px}.site-header nav{display:flex;gap:30px;align-items:center}.site-header nav a{font-size:14px;min-height:44px;display:flex;align-items:center;border-bottom:2px solid transparent}.site-header nav a:hover{border-color:var(--blue)}.button{display:inline-flex;justify-content:center;align-items:center;gap:24px;padding:14px 21px;min-height:50px;background:var(--blue);color:white;border:1px solid transparent;border-radius:3px;font-weight:700;font-size:14px;cursor:pointer;transition:background .15s}.button:hover{background:#1c4b6b}.button span{font-size:20px;line-height:1}.header-cta{font-size:13px;min-height:46px}.intro{background:var(--navy);color:white;padding:48px max(6%,calc((100vw - 1268px)/2)) 45px}.intro-inner{display:grid;grid-template-columns:1.7fr 1fr;gap:40px;align-items:end;margin-bottom:35px}.eyebrow{font-size:12px;letter-spacing:1.7px;font-weight:700;margin:0 0 20px}.intro .eyebrow{color:#b8d5e7}h1{font-size:clamp(36px,4vw,59px);line-height:1.12;letter-spacing:-2px;font-weight:500;margin:0}h1 em{font-style:normal;color:var(--ice)}.intro-copy{color:#c6d6dd;font-size:15px;line-height:1.7;margin:0 0 4px}.offer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.offer{display:flex;flex-direction:column;position:relative;padding:22px 23px 18px;background:#16394f;border:1px solid #3f6072;min-width:0;transition:background .15s,border-color .15s}.offer:hover{background:#214a5d;border-color:#adcfe3}.offer-top{display:flex;justify-content:space-between;align-items:center;color:#c3d9e6;font-size:12px}.offer-top svg{width:34px;height:34px;stroke:#b8d5e7;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.offer h2{font-size:25px;line-height:1.18;letter-spacing:-.6px;font-weight:500;margin:15px 0 8px}.offer p{font-size:12px;color:#c4d4d9;margin:0 0 22px}.offer-link{font-size:12px;border-top:1px solid #466273;padding-top:12px;margin-top:auto;display:flex;justify-content:space-between}.offer-link span{font-size:18px}.product-section{max-width:1440px;margin:auto;padding:70px 6% 58px}.section-index{display:flex;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--line);font-size:12px;letter-spacing:1px;margin-bottom:38px}.section-index>span:last-child{color:var(--muted);letter-spacing:.7px}.product-layout{display:grid;grid-template-columns:1fr 1fr;gap:62px;align-items:center}.reverse .product-visual,.reverse .service-visual{grid-column:2;grid-row:1}.reverse .product-copy{grid-column:1;grid-row:1}.product-visual{margin:0;background:#f5f6f8;border-radius:4px;overflow:hidden;border:1px solid #e1e6e7}.product-visual>img{display:block;width:100%;height:475px;object-fit:contain}.product-visual figcaption{padding:13px 17px;font-size:12px;line-height:1.5;color:var(--muted);border-top:1px solid #e1e6e7;background:#fafbfb}.product-copy h2,.contact-copy h2,.faq-section h2{font-size:clamp(31px,3.1vw,45px);line-height:1.14;letter-spacing:-1.5px;font-weight:500;margin:0 0 24px}.product-copy h2 em,.contact-copy h2 em{font-style:normal;color:var(--blue)}.product-copy>p:not(.eyebrow):not(.technical-note):not(.cargo-warning){font-size:16px;color:var(--muted);line-height:1.7;margin:0 0 26px}.product-copy .eyebrow{font-size:11px;color:var(--blue);margin-bottom:16px}.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:28px 0 22px}.spec-grid>div{border-top:1px solid var(--line);padding-top:13px}.spec-grid strong{font-weight:500;font-size:25px;letter-spacing:-.5px;display:block;line-height:1.25}.spec-grid span{display:block;font-size:12px;color:var(--muted);margin-top:6px}.technical-note{font-size:12px;color:var(--muted);line-height:1.7;margin:20px 0 25px}.product-details{margin-top:28px;border-block:1px solid var(--line)}.product-details>summary{padding:16px 0;list-style:none;cursor:pointer;font-size:14px;display:flex;justify-content:space-between;min-height:50px;align-items:center}.product-details>summary span{font-size:22px}.detail-gallery{display:grid;grid-template-columns:1fr 1fr;gap:25px;padding:15px 0 28px}.detail-gallery figure{margin:0;background:#f4f6f7}.detail-gallery img{width:100%;height:320px;object-fit:contain;display:block}.detail-gallery figcaption{font-size:12px;padding:12px 16px}.stair-section{max-width:none;background:var(--pale);padding-inline:max(6%,calc((100vw - 1268px)/2))}.feature-lines{margin:28px 0}.feature-lines>div{display:flex;gap:18px;padding:16px 0;border-top:1px solid var(--line)}.feature-lines>div>span{font-size:12px;color:var(--blue);padding-top:2px}.feature-lines p{margin:0;font-size:14px;color:var(--muted)}.feature-lines strong{display:block;font-weight:600;font-size:15px;color:var(--text);margin-bottom:4px}.concept-visual{background:#e6edf3;display:flex;flex-direction:column;justify-content:center;min-height:490px}.concept-label{font-size:64px;font-weight:500;letter-spacing:-3px;padding:28px 30px 0;color:#1a4a4c;line-height:1}.concept-visual>svg{width:100%;flex-grow:1;display:block}.concept-visual svg path{fill:none;stroke-linejoin:round;stroke-linecap:round;stroke-width:2.5}.diagram-main{stroke:#23545a;fill:#b8d2c5!important}.diagram-muted{stroke:#93aea6}.diagram-accent{stroke:#28658e}.concept-visual svg text{text-anchor:middle;fill:#285951;font-size:13px;font-family:Arial,sans-serif;letter-spacing:2px}.cargo-visual{min-height:490px;background:#eef2f4;display:flex;flex-direction:column;justify-content:space-between}.cargo-mark{text-align:center;padding:40px 15px 5px}.cargo-mark>span{display:block;font-size:12px;letter-spacing:2px;color:var(--muted)}.cargo-mark strong{display:block;font-size:100px;font-weight:500;line-height:1.05;letter-spacing:-7px;color:var(--navy);margin:9px 0 14px}.cargo-mark strong span{font-size:33px;letter-spacing:-1px;margin-left:10px}.cargo-visual svg{width:100%;height:190px;stroke:#376978;stroke-width:2;fill:none;stroke-linejoin:round;stroke-linecap:round}.use-badge{font-size:12px;font-weight:700;letter-spacing:1px;color:var(--blue);background:#e7f0f6;border:1px solid #b8cfdf;display:inline-block;padding:9px 12px}.cargo-warning{font-size:14px;font-weight:600;margin:10px 0 24px}.maintenance-section{background:var(--navy);color:#fff;max-width:none;padding-inline:max(6%,calc((100vw - 1268px)/2))}.maintenance-section .section-index{border-color:#446171}.maintenance-section .section-index>span:last-child{color:#bfd0d8}.maintenance-section .product-copy h2 em{color:var(--ice)}.maintenance-section .product-copy>.eyebrow{color:#b6d4e7}.maintenance-section .product-copy>p:not(.eyebrow){color:#c4d4db}.maintenance-section .feature-lines>div{border-color:#466171}.maintenance-section .feature-lines>div>span{color:#b9d7e9}.maintenance-section .feature-lines strong{color:white}.maintenance-section .feature-lines p{color:#bdd0d9}.light{background:var(--ice);color:var(--navy)}.light:hover{background:#accfe5}.service-visual{min-height:490px;border:1px solid #496b7c;background:#12374d;padding:32px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center}.service-kicker{font-size:12px;letter-spacing:1.8px;color:#b6d0d8;text-align:center}.service-symbol{width:150px;height:150px;border:1px solid #456e7c;border-radius:50%;display:grid;place-items:center;margin:32px 0;background:#174458}.service-symbol svg{width:86px;height:86px;stroke:#c5dfef;stroke-width:1.8;fill:none;stroke-linejoin:round}.service-stages{display:grid;grid-template-columns:repeat(3,1fr);width:100%;gap:12px}.service-stages>div{border-top:1px solid #4d7180;padding-top:15px;text-align:center}.service-stages span{font-size:12px;color:#b7d4e7}.service-stages p{font-size:13px;margin:8px 0 0}.service-caption{font-size:13px;text-align:center;color:#b5ced6;max-width:280px;margin:28px 0 0}.contact-section{max-width:1440px;padding:85px 6%;margin:auto;display:grid;grid-template-columns:1fr 1.08fr;gap:80px;align-items:start}.contact-copy{padding-top:16px}.contact-copy>p:not(.eyebrow){font-size:16px;line-height:1.7;color:var(--muted);max-width:400px;margin-bottom:30px}.contact-links{margin-top:26px;display:flex;flex-direction:column;gap:8px}.contact-links a{font-size:14px;min-height:32px;display:flex;align-items:center;align-self:start}.contact-links a:hover,footer a:hover{text-decoration:underline;text-underline-offset:4px}form{padding:30px;border:1px solid var(--line);background:var(--pale);border-radius:4px}form h3{font-size:25px;letter-spacing:-.6px;font-weight:500;margin:0 0 9px}.form-intro,.fine{font-size:12px;color:var(--muted);line-height:1.7}.form-intro{margin:0 0 25px}.field{margin-bottom:20px}label{font-size:13px;font-weight:700;display:block;margin-bottom:8px}label span{font-weight:400;color:var(--muted)}select,textarea{width:100%;display:block;padding:12px;border:1px solid #aebfbd;border-radius:3px;background:white;color:var(--text);font-size:14px;min-height:46px}textarea{resize:vertical}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.full{width:100%}.fine{margin:12px 0 0}#result{border-top:1px solid var(--line);padding-top:23px;margin-top:25px}.summary-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.summary-actions .button{font-size:12px;padding:12px 16px;min-height:46px}.summary-actions>a{flex-grow:1}.outline{border-color:#8eaaba;color:var(--blue);background:transparent}.outline:hover{background:#dbe7ef}#copy-status{font-size:13px;color:var(--blue)}.faq-section{max-width:1440px;margin:auto;padding:5px 6% 85px;display:grid;grid-template-columns:1fr 1.5fr;gap:80px}.faq-list details{border-top:1px solid var(--line);padding:19px 0}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;list-style:none;font-size:15px;font-weight:500;position:relative;padding-right:28px;min-height:25px}.faq-list summary:after{content:'+';position:absolute;right:0;font-size:24px;color:var(--blue);line-height:1}.faq-list details[open] summary:after{content:'−'}.faq-list details p{font-size:14px;color:var(--muted);margin:15px 0 0;line-height:1.7}footer{background:var(--deep);color:#d9e6e9;padding:32px max(6%,calc((100vw - 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/* Readable supporting labels and mobile navigation targets. */
@media(max-width:760px){.site-header nav a{min-height:44px}.section-index,.section-index>span:last-child,.product-copy .eyebrow,.intro .eyebrow{font-size:12px}.section-index{letter-spacing:.1px}.intro .eyebrow{letter-spacing:1px}}@media(max-width:370px){.site-header nav a,.offer p{font-size:12px}}

/* VRTS visual identity: navy, brand blue, white and strong uppercase headings. */
h1,.offer h2,.product-copy h2,.contact-copy h2,.faq-section h2{text-transform:uppercase;font-weight:750}h1{font-size:clamp(34px,3.8vw,55px);letter-spacing:-1.8px}.offer h2{font-size:23px;letter-spacing:-.6px}.product-copy h2{font-size:clamp(30px,2.75vw,40px)}.stair-photo{background:#e8edf1}.stair-photo>img{height:500px;object-fit:contain}.photo-selector{display:flex;border-bottom:1px solid #c4d4de;background:white}.photo-selector button{flex:1;min-height:48px;padding:12px;border:0;background:transparent;color:var(--navy);font-size:13px;font-weight:700;cursor:pointer}.photo-selector button[aria-pressed=true]{background:var(--blue);color:white}.video-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:20px 0 30px}.video-layout video{display:block;max-width:100%;width:300px;max-height:535px;background:#132c3d;margin:auto}.video-layout h3{font-size:31px;text-transform:uppercase;line-height:1.15;letter-spacing:-1px}.video-layout p{font-size:15px;color:var(--muted);max-width:350px}.video-layout .fine{font-size:12px}@media(max-width:760px){h1{font-size:30px;letter-spacing:-1px}.offer h2{font-size:20px}.product-copy h2{font-size:32px}.contact-copy h2,.faq-section h2{font-size:33px}.stair-photo>img{height:390px}.video-layout{grid-template-columns:1fr;gap:10px}.video-layout video{max-height:480px}.video-layout h3{font-size:27px}.video-layout p{max-width:none}.photo-selector button{min-height:48px}}@media(max-width:370px){h1{font-size:27px}.offer h2{font-size:18px}.product-copy h2{font-size:29px}}
/* Protect the four-product overview at tablet and narrow-phone widths. */
@media(max-width:1050px){.offer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.offer h2{font-size:clamp(15px,4.3vw,20px);letter-spacing:-.35px;overflow-wrap:break-word}}.product-details[open]>summary>span{transform:rotate(45deg)}

@media(max-width:760px){select,textarea{font-size:16px}}
/* Equipment documentation: honest preparation states, with no inactive fake links. */
.equipment-downloads{margin-top:30px;padding:25px 27px;background:#edf2f6;border:1px solid #cbd9e2;border-radius:3px}.downloads-heading{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:20px}.downloads-heading .eyebrow{font-size:11px;letter-spacing:1.1px;margin-bottom:7px;color:#3b6178}.downloads-heading h3{font-size:19px;line-height:1.3;letter-spacing:-.4px;font-weight:700;margin:0}.downloads-heading>p{font-size:12px;color:var(--muted);line-height:1.6;margin:0}.download-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:14px}.download-list li{display:flex;gap:13px;align-items:center;min-height:82px;padding:15px;background:#fff;border:1px solid #d5dfe5}.document-symbol{display:grid;place-items:center;font-size:23px;width:33px;height:39px;flex-shrink:0;border:1px solid #bfced8;color:#3b6178}.download-list li>div{flex-grow:1;min-width:0}.download-list strong{font-size:14px;display:block;font-weight:600}.download-list li>div>span{font-size:12px;color:var(--muted);display:block;margin-top:3px}.download-status{font-size:11px;white-space:nowrap;color:#536c7d;padding:5px 8px;background:#edf2f6;border-radius:3px}.download-list a.download-status{background:var(--blue);color:white;min-height:44px;display:flex;align-items:center}.download-list a.download-status:hover{background:#1c4b6b}@media(max-width:760px){.equipment-downloads{padding:22px 18px;margin-top:25px}.downloads-heading{display:block;margin-bottom:17px}.downloads-heading .eyebrow{font-size:12px}.downloads-heading h3{font-size:18px}.downloads-heading>p{margin-top:10px;font-size:12px}.download-list{grid-template-columns:1fr;gap:10px}.download-list li{padding:13px;gap:10px}.download-status{font-size:12px}}