/* Local review: St John’s Wood NW8. Shared PEP masthead/menu/footer styles stay intact. */
html{scroll-behavior:smooth;scroll-padding-top:94px}
body{margin:0;background:#fbfaf7}
.chsw-page.site-frame{width:100%;max-width:none;margin:0;padding:0;min-height:100vh;background:#fbfaf7}
.chsw-main{--ink:#122027;--muted:#515d61;--paper:#fbfaf7;--stone:#efebe3;--copper:#965b35;--gold:#dab979;color:var(--ink);font:400 16px/1.7 "Manrope PEP","Segoe UI",Arial,sans-serif;letter-spacing:0}
.chsw-main *{box-sizing:border-box}
.chsw-main :is(h1,h2,h3,p,ul,ol,figure){margin:0}
.chsw-main h1,.chsw-main h2{font-family:Georgia,"Times New Roman",serif;font-weight:400;letter-spacing:-.035em;text-wrap:balance}
.chsw-main h1{font-size:clamp(42px,4.25vw,64px);line-height:1.06}
.chsw-main h2{font-size:clamp(30px,3.05vw,44px);line-height:1.12}
.chsw-main h3{font:650 16px/1.35 "Sora PEP","Segoe UI",Arial,sans-serif;letter-spacing:-.025em}
.chsw-main a{color:inherit;text-decoration-thickness:1px;text-underline-offset:4px}
.chsw-main a:hover{color:var(--copper)}
.chsw-main :focus-visible{outline:2px solid var(--copper);outline-offset:5px}
.chsw-main p+p{margin-top:16px}
.chsw-main img{display:block;max-width:100%}
.chsw-container{width:min(calc(100% - 96px),1280px);margin-inline:auto}
.chsw-section{padding:64px 0;scroll-margin-top:90px}
.chsw-main .chsw-kicker{font:650 10px/1.4 "Sora PEP",sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--copper);margin:0 0 18px}
.chsw-main .chsw-button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;min-height:48px;padding:15px 21px;background:var(--copper);color:#fff;font:650 11px/1.4 "Sora PEP",sans-serif;letter-spacing:.025em;text-decoration:none}
.chsw-main .chsw-button:hover{background:#774223;color:#fff}
.chsw-button span{font-size:18px;line-height:1}
.chsw-actions{display:flex;align-items:center;flex-wrap:wrap;gap:24px}
.chsw-call{font:650 12px/1.5 "Sora PEP",sans-serif;white-space:nowrap}
.chsw-skip{position:fixed;top:0;left:20px;transform:translateY(-130%);z-index:1100;padding:12px 18px;background:#fff;color:#111}
.chsw-skip:focus{transform:translateY(4px)}

.chsw-hero{position:relative;isolation:isolate;background:#101e22;color:#fff;min-height:560px;display:flex;align-items:center}
.chsw-hero-media{position:absolute;inset:0;z-index:-3;overflow:hidden}
.chsw-hero-media img{width:100%;height:100%;object-fit:cover;object-position:50% 50%}
.chsw-hero-shade{position:absolute;inset:0;z-index:-2;background:linear-gradient(90deg,rgba(6,21,23,.94) 0%,rgba(6,21,23,.87) 26%,rgba(6,21,23,.67) 43%,rgba(6,21,23,.14) 65%,rgba(6,21,23,0) 82%)}
.chsw-hero-inner{padding-block:60px}
.chsw-hero-copy{width:min(570px,48%)}
.chsw-hero h1 span{color:var(--gold)}
.chsw-hero .chsw-kicker{color:#edc796;font-size:10px}
.chsw-hero .chsw-lead{margin-top:23px;color:#f0eeea;font-size:16px;line-height:1.65;max-width:510px}
.chsw-hero .chsw-actions{margin-top:28px;gap:22px}
.chsw-hero .chsw-call:hover{color:#efd2a3}

.chsw-credentials{background:var(--stone);border-bottom:1px solid #d7d3cb;padding:0}
.chsw-credential-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.chsw-credential{display:flex;align-items:center;gap:14px;padding:24px 17px;min-height:98px;border-right:1px solid #d7d3cb}
.chsw-credential:first-child{padding-left:0}
.chsw-credential:last-child{border:0;padding-right:0}
.chsw-credential img{width:66px;height:45px;flex:0 0 auto;object-fit:contain}
.chsw-credential img.gas{width:38px;height:47px}
.chsw-credential img.vaillant{width:39px;height:49px}
.chsw-credential img.viessmann{width:88px;height:34px}
.chsw-credential img.niceic{width:67px;height:35px}
.chsw-credential strong{display:block;font:650 11px/1.45 "Sora PEP",sans-serif}
.chsw-credential span{display:block;font-size:11px;line-height:1.45;color:#535b5c;margin-top:5px}
.chsw-family{padding:9px 0 11px!important;border-top:1px solid #d7d3cb;text-align:center;color:#555e5f;font-size:11px;letter-spacing:.025em}
.chsw-breadcrumb{display:flex;flex-wrap:wrap;gap:7px 11px;padding-top:22px;color:#5c6565;font-size:11px;line-height:1.55}
.chsw-heading-row{display:grid;grid-template-columns:.9fr 1.2fr;gap:clamp(36px,6vw,90px)}
.chsw-heading-row h2{max-width:470px}
.chsw-prose{color:var(--muted);max-width:690px}
.chsw-local{padding-top:43px}

.chsw-scope{background:#10252c;color:#fff}
.chsw-section-intro{max-width:830px}
.chsw-scope .chsw-kicker{color:#e3b282}
.chsw-section-intro>p:last-child{margin-top:19px;color:#d5dddd;max-width:770px}
.chsw-scope-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:34px;border-top:1px solid #405258}
.chsw-scope-grid article{padding:25px 30px 24px 0;border-bottom:1px solid #405258;min-width:0}
.chsw-scope-grid article:not(:nth-child(3n+1)){padding-left:30px;border-left:1px solid #405258}
.chsw-number{display:block;color:#e3b282;font:600 11px/1.3 "Sora PEP",sans-serif;letter-spacing:.12em;margin-bottom:13px}
.chsw-scope-grid p{font-size:14px;line-height:1.65;color:#cbd6d7;margin-top:10px}

.chsw-detail{padding-block:58px;border-bottom:1px solid #e1ddd5}
.chsw-detail-reverse{background:var(--stone)}
.chsw-detail-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:clamp(34px,5.4vw,78px);align-items:center}
.chsw-detail-image{position:relative;overflow:hidden;background:#ded4c4;aspect-ratio:1.5;min-width:0}
.chsw-detail-image img{width:100%;height:100%;object-fit:cover;object-position:right center}
.chsw-detail-image figcaption{position:absolute;right:0;bottom:0;background:#10252c;color:#fff;font:600 9px/1.4 "Sora PEP",sans-serif;letter-spacing:.1em;text-transform:uppercase;padding:10px 13px}
.chsw-detail-copy h2{margin-bottom:24px}
.chsw-detail-copy>p:not(.chsw-kicker):not(.chsw-principles){font-size:15px;color:var(--muted);line-height:1.75}
.chsw-detail-copy .chsw-principles{border-top:1px solid #cecac2;margin-top:24px;padding-top:16px;font:650 10px/1.6 "Sora PEP",sans-serif;letter-spacing:.01em}
.chsw-detail-reverse .chsw-detail-image{grid-column:2;grid-row:1}
.chsw-detail-reverse .chsw-detail-copy{grid-column:1;grid-row:1}
.chsw-commissioning{background:#f5f2ec}
.chsw-commissioning .chsw-prose a{font-weight:700}

.chsw-warranty{background:#10252c;color:#fff}
.chsw-warranty .chsw-kicker{color:#e3b282}
.chsw-warranty-heading{max-width:830px}
.chsw-warranty-heading>p:last-child{margin-top:22px;color:#cbd6d7}
.chsw-cover-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:30px}
.chsw-cover-grid article{background:#fbfaf7;color:#122027;display:grid;grid-template-columns:auto 1fr;align-items:center;gap:22px;padding:28px 30px}
.chsw-cover-grid article>img{object-fit:contain;width:108px;height:42px;object-position:left center}
.chsw-cover-grid article:first-child>img{width:42px;height:56px}
.chsw-cover-term{display:flex;align-items:baseline;justify-content:flex-end;gap:9px}
.chsw-cover-term strong{font:400 54px/1 Georgia,serif;color:#965b35;letter-spacing:-.04em}
.chsw-cover-term span{font-size:13px}
.chsw-cover-grid article>p{grid-column:1/-1;color:#515d61;font-size:14px;line-height:1.6}
.chsw-cover-terms{margin-top:24px;color:#cbd6d7;font-size:13px;max-width:1000px}
.chsw-cover-terms a:hover{color:#e8bf95}
.chsw-work{background:#e8e2d7;border-bottom:1px solid #d0c9bd;padding-block:46px}
.chsw-work-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:center}
.chsw-work h2{font-size:35px}
.chsw-work .chsw-kicker{color:#824b2a}
.chsw-work p{font-size:14px}
.chsw-work p>a{font:650 12px/1.6 "Sora PEP",sans-serif}
.chsw-process{background:#f0ece4;padding-top:50px}
.chsw-process>div>h2{max-width:760px}
.chsw-process ol{padding:0;list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;margin-top:30px}
.chsw-process li{border-top:1px solid #c7c0b6;padding-top:20px}
.chsw-process .chsw-number{color:#965b35}
.chsw-process h3{font-size:14px}
.chsw-process p{margin-top:11px;font-size:14px;line-height:1.65;color:#515d61}
.chsw-faq-grid{display:grid;grid-template-columns:.75fr 1.35fr;gap:76px}
.chsw-faq details{border-bottom:1px solid #d5d1c9;padding:0}
.chsw-faq details:first-child{border-top:1px solid #d5d1c9}
.chsw-faq summary{display:flex;gap:20px;align-items:center;justify-content:space-between;cursor:pointer;list-style:none;padding:20px 0;font:600 14px/1.55 "Sora PEP",sans-serif}
.chsw-faq summary::-webkit-details-marker{display:none}
.chsw-faq summary>span{font:400 23px/1 Georgia,serif;color:#965b35;flex:0 0 15px;text-align:center}
.chsw-faq details[open] summary>span{transform:rotate(45deg)}
.chsw-faq details>p{font-size:14px;line-height:1.8;color:#515d61;padding:0 35px 23px 0}
.chsw-related{padding-block:35px;background:#efebe3}
.chsw-related h2{font:650 12px/1.5 "Sora PEP",sans-serif;letter-spacing:.035em;margin-bottom:16px}
.chsw-related ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:10px 35px}
.chsw-related a{display:flex;justify-content:space-between;align-items:center;min-height:42px;border-bottom:1px solid #c8c4bb;font-size:13px;padding:7px 0;text-decoration:none}
.chsw-related a:after{content:'↗';font-size:17px;margin-left:15px}
.chsw-final{background:#10252c;color:#fff}
.chsw-final>.chsw-container{display:grid;grid-template-columns:1.1fr 1fr;gap:65px;align-items:center}
.chsw-final p{font-size:15px;color:#d5dddd;margin-top:20px}
.chsw-final .chsw-actions{justify-content:flex-end}
.chsw-final .chsw-call:hover{color:#edc796}
.chsw-image-note{padding-block:16px;font-size:10px;line-height:1.6;color:#5b6566}

@media(min-width:1700px){.chsw-hero{min-height:640px}.chsw-hero-media img{object-position:center}.chsw-hero-shade{background:linear-gradient(90deg,rgba(6,21,23,.94),rgba(6,21,23,.83) 32%,rgba(6,21,23,.08) 66%,transparent 82%)}.chsw-hero-copy{width:560px}}
@media(max-width:1100px){.chsw-container{width:calc(100% - 64px)}.chsw-hero{min-height:540px}.chsw-hero-copy{width:51%}.chsw-hero h1{font-size:48px}.chsw-hero .chsw-lead{font-size:15px}.chsw-hero .chsw-actions{gap:15px}.chsw-credential{gap:10px;padding-inline:12px}.chsw-credential img.viessmann{width:68px}.chsw-credential strong{font-size:10px}.chsw-heading-row{gap:40px}.chsw-detail-grid{gap:34px}.chsw-detail-copy h2{font-size:34px}.chsw-faq-grid{gap:42px}.chsw-final>.chsw-container{gap:35px}.chsw-cover-grid article{padding:24px}.chsw-cover-term strong{font-size:46px}}
@media(max-width:900px){.chsw-credential-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.chsw-credential{padding:17px 20px;min-height:84px}.chsw-credential:nth-child(odd){padding-left:0}.chsw-credential:nth-child(even){border-right:0}.chsw-credential:nth-child(-n+2){border-bottom:1px solid #d7d3cb}.chsw-credential strong{font-size:11px}.chsw-credential img.viessmann{width:84px}.chsw-scope-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.chsw-scope-grid article:not(:nth-child(3n+1)){padding-left:0;border-left:0}.chsw-scope-grid article:nth-child(even){padding-left:24px;border-left:1px solid #405258}.chsw-process ol{grid-template-columns:repeat(2,minmax(0,1fr))}.chsw-hero .chsw-actions{align-items:flex-start;flex-direction:column}.chsw-cover-grid article{gap:18px}.chsw-cover-term{gap:6px}.chsw-cover-term span{font-size:11px}.chsw-cover-grid article>img{width:90px}}
@media(max-width:900px){
 .chsw-container{width:calc(100% - 40px)}.chsw-section{padding-block:40px}.chsw-main h2{font-size:32px}.chsw-main .chsw-kicker{font-size:9px;margin-bottom:13px}
 .chsw-hero{display:flex;flex-direction:column;align-items:stretch;min-height:0;isolation:auto}.chsw-hero-media{position:relative;inset:auto;z-index:auto;height:clamp(168px,40vw,360px);order:0}.chsw-hero-media img{object-position:right center}.chsw-hero-shade{display:none}.chsw-hero-inner{order:1;padding-block:31px 35px}.chsw-hero-copy{width:100%}.chsw-hero h1{font-size:clamp(34px,7.8vw,46px);max-width:600px}.chsw-hero .chsw-lead{font-size:14px;line-height:1.75;margin-top:18px}.chsw-hero .chsw-actions{flex-direction:row;align-items:center;gap:19px;margin-top:23px}.chsw-hero .chsw-kicker{font-size:9px}
 .chsw-credential{padding:15px 10px;min-height:84px;gap:11px}.chsw-credential img{max-width:66px}.chsw-credential img.viessmann{width:63px}.chsw-credential img.niceic{width:51px}.chsw-credential img.gas{width:30px;height:40px}.chsw-credential img.vaillant{width:31px;height:41px}.chsw-credential strong{font-size:9px}.chsw-credential span{font-size:9px}.chsw-family{font-size:10px}
 .chsw-breadcrumb{font-size:10px;padding-top:18px;gap:5px 9px}.chsw-heading-row{grid-template-columns:1fr;gap:23px}.chsw-local{padding-top:30px}.chsw-prose{font-size:14px;line-height:1.8}.chsw-prose p+p{margin-top:14px}
 .chsw-section-intro>p:last-child{font-size:14px}.chsw-scope-grid{margin-top:23px}.chsw-scope-grid article{padding:20px 17px 21px 0}.chsw-scope-grid article:nth-child(even){padding-left:17px}.chsw-scope-grid h3{font-size:13px}.chsw-scope-grid p{font-size:12px;line-height:1.7}.chsw-number{font-size:10px;margin-bottom:11px}
 .chsw-detail-grid{display:flex;flex-direction:column;gap:23px;align-items:stretch}.chsw-detail-image{width:100%;aspect-ratio:1.6}.chsw-detail-copy h2{font-size:32px;margin-bottom:17px}.chsw-detail-copy>p:not(.chsw-kicker):not(.chsw-principles){font-size:14px;line-height:1.8}.chsw-detail-copy .chsw-principles{font-size:9px;margin-top:19px;padding-top:13px}.chsw-detail-image figcaption{font-size:8px;padding:8px 11px}
 .chsw-warranty-heading>p:last-child{font-size:14px;margin-top:18px}.chsw-cover-grid{gap:15px;margin-top:25px;grid-template-columns:1fr}.chsw-cover-grid article{padding:23px;grid-template-columns:auto 1fr;gap:18px}.chsw-cover-term strong{font-size:50px}.chsw-cover-term span{font-size:12px}.chsw-cover-grid article>img{width:114px}.chsw-cover-grid article>p{font-size:13px}.chsw-cover-terms{font-size:12px}.chsw-work-grid{grid-template-columns:1fr;gap:22px}.chsw-work h2{font-size:31px}
 .chsw-process ol{gap:23px;margin-top:25px}.chsw-process p{font-size:12px}.chsw-process h3{font-size:13px}.chsw-faq-grid{grid-template-columns:1fr;gap:25px}.chsw-faq summary{font-size:13px;padding:17px 0;gap:14px}.chsw-faq details>p{padding-right:10px;font-size:13px}.chsw-related ul{grid-template-columns:1fr;gap:5px}.chsw-related a{font-size:12px}.chsw-related h2{font-size:12px}.chsw-final>.chsw-container{grid-template-columns:1fr;gap:26px}.chsw-final p{font-size:14px}.chsw-final .chsw-actions{justify-content:flex-start;gap:21px}.chsw-image-note{font-size:9px}
}
@media(max-width:360px){.chsw-hero h1{font-size:33px}.chsw-hero .chsw-actions{flex-direction:column;align-items:flex-start;gap:16px}.chsw-credential{gap:8px}.chsw-credential img.viessmann{width:50px}.chsw-credential img.niceic{width:43px}.chsw-credential strong{font-size:8px}.chsw-scope-grid{grid-template-columns:1fr}.chsw-scope-grid article:nth-child(even){padding-left:0;border-left:0}.chsw-scope-grid article{padding:19px 0}.chsw-scope-grid p{font-size:13px}.chsw-scope-grid h3{font-size:14px}.chsw-process ol{grid-template-columns:1fr}.chsw-process p{font-size:13px}.chsw-main .chsw-button{gap:17px;padding-inline:17px}.chsw-breadcrumb{font-size:9px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* PEP-1039: owner-requested Gas Safe visibility. */
.chsw-credential img.gas{width:52px;height:65px}
.chsw-gas-proof{display:flex;align-items:center;gap:18px;margin-top:25px;padding:18px 22px;background:#fbfaf7;color:#122027;width:fit-content;max-width:100%}
.chsw-gas-proof img{width:52px;height:65px;object-fit:contain;flex:0 0 auto}
.chsw-gas-proof p{margin:0;font:600 13px/1.5 "Sora PEP",sans-serif}
.chsw-gas-proof strong,.chsw-gas-proof span{display:block}.chsw-gas-proof span{font:400 12px/1.5 "Manrope PEP",sans-serif;margin-top:5px}
@media(max-width:900px){.chsw-credential img.gas{width:38px;height:48px}.chsw-gas-proof{padding:15px 18px;gap:15px}.chsw-gas-proof p{font-size:12px}}
@media(max-width:360px){.chsw-credential img.gas{width:30px;height:40px}}

/* Adapt approved PEP layout to full-frame NW8 photographs and the approved longer text. */
.chsw-hero-inner{padding-block:42px}
.chsw-hero-copy{width:min(555px,46%)}
.chsw-hero h1{font-size:clamp(42px,3.85vw,58px)}
.chsw-hero .chsw-lead{font-size:15px;line-height:1.7}
.chsw-hero{min-height:clamp(520px,40vw,640px)}
.chsw-hero .chsw-actions{gap:18px}
.chsw-main .chsw-button{font-size:10px;letter-spacing:0;gap:16px}
.chsw-scope-note{font-size:13px;line-height:1.7;max-width:950px;color:#cbd6d7;margin-top:24px}
.chsw-detail-image{aspect-ratio:auto;overflow:visible;background:transparent;align-self:center}
.chsw-detail-image img{width:100%;height:auto;aspect-ratio:1983 / 793;object-fit:contain}
.chsw-detail-image figcaption{position:static;display:block;width:fit-content;margin-left:auto}
.chsw-detail-copy h2{font-size:clamp(30px,2.7vw,39px);margin-bottom:20px}
.chsw-detail-copy>p:not(.chsw-kicker){font-size:14px;line-height:1.8}
.chsw-cover-grid article>h3{grid-column:1/-1;font-size:14px;margin:0}
.chsw-cover-grid article>p{margin-top:0}
@media(min-width:1700px){.chsw-hero-copy{width:555px}.chsw-hero{min-height:640px}}
@media(min-width:901px) and (max-width:1100px){.chsw-hero-copy{width:49%}.chsw-hero h1{font-size:44px}.chsw-hero .chsw-actions{align-items:flex-start;flex-direction:column;gap:17px}.chsw-detail-copy h2{font-size:31px}.chsw-detail-grid{gap:30px}}
@media(max-width:900px){.chsw-hero{min-height:0}.chsw-hero-copy{width:100%}.chsw-hero-inner{padding-block:28px 32px}.chsw-hero h1{font-size:clamp(33px,7.8vw,44px)}.chsw-hero .chsw-lead{font-size:14px}.chsw-hero-media{height:auto;aspect-ratio:1983 / 793}.chsw-hero-media img{height:auto;aspect-ratio:1983 / 793;object-fit:contain}.chsw-hero .chsw-actions{gap:18px}.chsw-detail-image{aspect-ratio:auto;align-self:stretch}.chsw-detail-copy h2{font-size:31px}.chsw-main .chsw-button{font-size:10px}.chsw-cover-grid article{gap:16px}.chsw-scope-note{font-size:12px;margin-top:20px}}
@media(max-width:360px){.chsw-hero h1{font-size:32px}.chsw-detail-copy h2{font-size:29px}.chsw-main .chsw-button{padding-inline:16px}}