*{box-sizing:border-box}
:root{--navy:#102f63;--deep:#082b5d;--blue:#0879f9;--pale:#eaf5ff;--line:#b8d9f7;--red:#ed2347;--ink:#142f5e}
html{scroll-behavior:smooth;scroll-padding-top:18px}
body{margin:0;font-family:Montserrat,Arial,sans-serif;color:var(--ink);background:#f8fcff;line-height:1.55}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,calc(100% - 48px));margin:0 auto}
.site-header{background:#f8fcff;border-bottom:1px solid #d7e9f8;position:relative;z-index:2}
.header-inner{min-height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand img{display:block;width:245px;height:auto;mix-blend-mode:multiply}
.header-contact{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:700}
.header-contact span{color:var(--blue);font-size:18px;margin-right:10px}
.blueprint{background-color:#f8fcff;background-image:linear-gradient(rgba(8,121,249,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(8,121,249,.035) 1px,transparent 1px);background-size:24px 24px}
.hero{overflow:hidden;position:relative}
.hero-inner{min-height:390px;position:relative;display:flex;align-items:center}
.hero-copy{position:relative;z-index:1;width:47%;padding:38px 0 48px}
.eyebrow,.section-kicker{font-size:11px;font-weight:800;letter-spacing:3px;text-transform:uppercase;color:#52698d}
.eyebrow i{font-style:normal;color:#9bb7d8;margin:0 7px}
h1{font-size:clamp(38px,5vw,58px);line-height:1.02;letter-spacing:-2px;text-transform:uppercase;margin:18px 0 12px;font-weight:900;color:#102d5c}
h1 span{color:var(--blue)}
.red-rule{width:58px;height:4px;background:var(--red);margin:16px 0}
.hero-intro{max-width:390px;font-size:15px;font-weight:500;line-height:1.55}
.button{display:inline-flex;align-items:center;gap:28px;background:var(--blue);color:white;border:0;border-radius:4px;padding:15px 24px;font:700 12px Montserrat,Arial,sans-serif;text-transform:uppercase;letter-spacing:.5px;cursor:pointer;box-shadow:0 5px 14px #0879f92b;transition:transform .2s,background .2s}
.button:hover{background:#0565d4;transform:translateY(-2px)}
.button span{font-size:20px;line-height:12px}
.hero-photo{position:absolute;right:-8%;top:0;width:66%;height:100%;background:url("assets/underfloor-heating-hero.jpg") center/cover no-repeat;clip-path:polygon(17% 0,100% 0,100% 100%,0 100%);opacity:.96}
.handwritten{position:absolute;right:0;bottom:22%;z-index:1;color:#0879f9;font-style:italic;font-weight:700;font-size:17px;line-height:1.25;transform:rotate(-8deg);text-shadow:0 1px #fff}
.section{padding:34px 0}
.section-kicker{display:flex;align-items:center;gap:12px;margin:0 0 18px;color:#0871db;letter-spacing:2px}
.section-kicker span{width:24px;height:2px;background:var(--blue)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr) 1.1fr;gap:24px;align-items:center}
.service-card{min-height:150px;padding:0 22px 0 0;border-right:1px solid var(--line)}
.service-icon{width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#e3f1ff;color:var(--blue);font-size:36px;font-weight:700;margin-bottom:10px}
.service-card h2,.reason-grid h3{font-size:13px;text-transform:uppercase;letter-spacing:1px;margin:0 0 8px}
.service-card p,.reason-grid p{font-size:12px;margin:0;line-height:1.6}
.plan-art{height:150px;border:1px solid #c3def7;background:repeating-linear-gradient(0deg,transparent 0 20px,#dceeff 21px),repeating-linear-gradient(90deg,transparent 0 20px,#dceeff 21px);position:relative;padding:15px}
.plan-label{font-size:8px;color:#5a83b4;text-align:right}
.pipe-plan{height:95px;border:2px solid #f19aa9;border-radius:8px;position:relative;margin:8px 12px}
.pipe-plan:before,.pipe-plan:after,.pipe-plan span{content:"";position:absolute;left:12px;right:12px;height:13px;border:2px solid #ef879b;border-radius:7px}
.pipe-plan:before{top:10px}.pipe-plan:after{top:34px}.pipe-plan span:first-child{top:58px}.pipe-plan span:last-child{top:2px;left:22px;right:22px;height:75px;border-color:#7cb7f4}
.regulations{background:linear-gradient(110deg,#eaf5ff 0%,#f7fbff 65%,#d9ecff 100%);border-top:1px solid #d6eaff;border-bottom:1px solid #d6eaff;position:relative;overflow:hidden}
.reg-top{display:grid;grid-template-columns:1.35fr 1fr 1.15fr;gap:26px}
.reg-intro{padding-right:10px}
.pill{display:inline-block;background:var(--blue);color:#fff;font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:1px;border-radius:4px;padding:8px 13px;margin:0 0 12px}
.reg-intro h2{font-size:clamp(25px,3vw,35px);line-height:1.08;text-transform:uppercase;letter-spacing:-.8px;margin:0 0 10px;color:#12356a}
.reg-intro h3{font-size:15px;color:#0879f9;margin:0 0 10px}
.reg-intro p:not(.pill),.reg-column p{font-size:12px;line-height:1.65;margin:0}
.reg-column{border-left:1px solid #b7d7f6;padding-left:24px}
.outline-icon{font-size:34px;color:var(--blue);line-height:1;margin-bottom:8px}
.reg-column h3{font-size:13px;text-transform:uppercase;margin:0 0 6px;color:#12356a}
.tick-list{padding:0;margin:8px 0 0;list-style:none}
.tick-list li{font-size:11px;line-height:1.5;margin:6px 0;padding-left:18px;position:relative}
.tick-list li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
.date-strip{display:flex;align-items:center;gap:18px;border:1px solid #c4def8;border-radius:9px;background:#f8fcffb8;padding:12px 20px;margin:22px 0 8px}
.calendar-icon{font-size:37px;color:var(--blue)}
.date-strip div:nth-child(2){min-width:220px}
.date-strip strong{display:block;font-size:25px;line-height:1.2;text-transform:uppercase;color:#12356a}
.date-strip span{font-size:11px;color:#0879f9;font-weight:700}
.date-strip p{font-size:11px;margin:0;padding-left:20px;border-left:1px solid #b7d7f6}
.reg-tagline{text-align:center;font-weight:800;font-style:italic;font-size:14px;margin:10px 0 0}
.reg-note{text-align:center;font-size:9px;color:#58708e;margin:8px auto 0;max-width:800px}
.reasons{background-color:#eef7ff}
.reason-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.reason-grid article{padding:0 24px;border-right:1px solid var(--line)}
.reason-grid article:first-child{padding-left:0}
.reason-grid article:last-child{border:0}
.reason-icon{font-size:36px;line-height:1.2;color:var(--blue);margin-bottom:8px}
.reason-grid h3{font-size:12px;line-height:1.35}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.contact-copy h2{font-size:26px;line-height:1.15;text-transform:uppercase;margin:0 0 10px}
.contact-copy>p:not(.section-kicker){font-size:13px;max-width:420px}
.contact-details{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.contact-details>a,.contact-details>div{display:flex;align-items:center;gap:9px;font-size:10px;border-right:1px solid #c5def5;padding-right:12px}
.contact-details b{font-size:22px;color:var(--blue)}
.contact-details strong{font-size:9px}
.contact-form{background:white;border:1px solid #d8e9f8;border-radius:8px;padding:20px;box-shadow:0 8px 28px #0b5eb51a}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:block;font-size:10px;font-weight:700;margin-bottom:10px}
.contact-form input,.contact-form select,.contact-form textarea{display:block;width:100%;margin-top:4px;border:1px solid #cbdff2;border-radius:3px;background:#fbfdff;padding:10px 11px;font:500 11px Montserrat,Arial,sans-serif;color:#16335f}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:2px solid #9ccaff;border-color:var(--blue)}
.contact-form textarea{resize:vertical}
.submit-button{width:100%;justify-content:center;padding:13px}
.form-help{font-size:9px;color:#7386a0;margin:8px 0 0}
.hidden{display:none}
.site-footer{background:linear-gradient(120deg,#062653,#0c3c7c);color:white;padding:30px 0 18px}
.footer-main{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;font-size:10px}
.footer-brand img{width:190px;height:auto;mix-blend-mode:screen}
.footer-main a:not(.footer-brand),.footer-main>span{white-space:nowrap}
.footer-script{font-family:Georgia,serif;font-style:italic;font-size:19px;line-height:1.1;transform:rotate(-7deg);text-align:center;margin:0;color:#fff}
.footer-bottom{border-top:1px solid #2b5a91;margin-top:22px;padding-top:15px;display:flex;justify-content:space-between;font-size:9px;color:#c8d9ef}
@media(max-width:800px){.container{width:min(100% - 34px,620px)}.header-inner{min-height:85px}.brand img{width:185px}.header-contact{font-size:10px}.hero-inner{min-height:580px;align-items:flex-start}.hero-copy{width:100%;padding:35px 0 0}.hero-photo{top:270px;right:-5%;width:110%;height:310px;clip-path:none;opacity:.9}.handwritten{bottom:24px;right:8px}.service-grid{grid-template-columns:1fr 1fr}.service-card{border-right:0;border-bottom:1px solid var(--line);padding:0 10px 18px 0}.plan-art{display:none}.reg-top{grid-template-columns:1fr 1fr}.reg-intro{grid-column:1/-1}.reg-column{padding-left:18px}.date-strip{flex-wrap:wrap}.date-strip p{border:0;padding:0 0 0 55px}.reason-grid{grid-template-columns:1fr 1fr;row-gap:22px}.reason-grid article:nth-child(2){border:0}.reason-grid article:nth-child(3){padding-left:0}.contact-grid{grid-template-columns:1fr;gap:22px}.footer-main{flex-wrap:wrap;justify-content:flex-start}.footer-brand{width:100%}.footer-script{margin-left:auto}}
@media(max-width:480px){.header-inner{align-items:flex-start;padding:13px 0;flex-direction:column;gap:8px}.header-contact{flex-direction:row;flex-wrap:wrap;gap:10px 18px}.hero-inner{min-height:550px}.hero-copy{padding-top:27px}h1{font-size:39px}.hero-intro{font-size:13px;max-width:320px}.hero-photo{top:300px;height:250px}.service-grid{grid-template-columns:1fr}.service-card{min-height:0;padding:0 0 16px}.reg-top{grid-template-columns:1fr}.reg-intro{grid-column:auto}.reg-column{border-left:0;border-top:1px solid #b7d7f6;padding:18px 0 0}.date-strip{gap:10px;padding:12px}.date-strip strong{font-size:20px}.date-strip div:nth-child(2){min-width:0}.date-strip p{padding:0;width:100%}.reason-grid article{padding:0 12px}.reason-grid h3{font-size:10px}.reason-grid p{font-size:10px}.form-row{grid-template-columns:1fr;gap:0}.contact-details{gap:10px}.contact-details>a,.contact-details>div{border:0}.footer-main{font-size:9px}.footer-brand img{width:175px}.footer-script{font-size:16px}.footer-bottom{gap:15px;flex-wrap:wrap}}