/* Heater Shield — responsive static site */
:root{--red:#b51f2e;--red-dark:#901522;--red-soft:#fbeaec;--ink:#17202b;--muted:#586373;--line:#e5e8ed;--paper:#fff;--wash:#f5f6f8;--navy:#182433;--radius:18px;--shadow:0 18px 50px rgba(23,32,43,.12);--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}img{max-width:100%;display:block}a{color:var(--red);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #e65a64;outline-offset:3px;border-radius:5px}button{font:inherit}.container{width:min(var(--max),calc(100% - 44px));margin-inline:auto}.narrow{max-width:820px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;left:14px;top:-60px;background:#fff;color:#000;z-index:1000;padding:10px 16px;border-radius:8px}.skip-link:focus{top:10px}.utility-bar{background:var(--navy);color:#e9edf2;font-size:.83rem}.utility-inner{display:flex;justify-content:space-between;align-items:center;min-height:34px;gap:20px}.utility-inner a{color:#fff;font-weight:700}.utility-dot{width:7px;height:7px;border-radius:50%;display:inline-block;background:#e65a64;margin-right:8px}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.header-inner{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand img{width:185px;height:auto}.primary-nav{display:flex;align-items:center;gap:22px}.nav-link,.nav-dropdown-toggle{font-size:.93rem;color:#293443;font-weight:650;background:none;border:0;padding:13px 0;cursor:pointer}.nav-link:hover,.nav-dropdown-toggle:hover{color:var(--red);text-decoration:none}.nav-dropdown{position:relative}.nav-dropdown-toggle{display:flex;align-items:center;gap:9px}.chevron{width:8px;height:8px;border-right:1.8px solid currentColor;border-bottom:1.8px solid currentColor;transform:rotate(45deg);display:inline-block;margin-top:-4px;transition:transform .2s}.nav-dropdown-toggle[aria-expanded="true"] .chevron{transform:rotate(225deg);margin-top:4px}.nav-dropdown-menu{position:absolute;top:calc(100% + 8px);left:-18px;min-width:260px;max-height:min(72vh,540px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:9px;box-shadow:var(--shadow);z-index:110}.nav-dropdown-menu a{display:block;padding:10px 12px;border-radius:9px;color:var(--ink);font-size:.91rem}.nav-dropdown-menu a:hover{background:var(--red-soft);color:var(--red);text-decoration:none}.header-call,.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:999px;font-weight:750;cursor:pointer;transition:transform .2s,background .2s,color .2s}.header-call{background:var(--red);color:#fff;padding:12px 19px;white-space:nowrap}.header-call:hover{background:var(--red-dark);color:#fff;text-decoration:none}.phone-mark{font-size:1.05rem}.mobile-menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:10px;width:44px;height:42px;align-items:center;justify-content:center;color:var(--ink)}.menu-icon,.menu-icon:before,.menu-icon:after{height:2px;width:19px;background:currentColor;display:block;position:relative;content:""}.menu-icon:before{position:absolute;top:-6px}.menu-icon:after{position:absolute;top:6px}.hero{position:relative;min-height:510px;display:flex;align-items:center;overflow:hidden;background:#263342;color:#fff}.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 42%}.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,18,28,.88) 0%,rgba(11,18,28,.74) 48%,rgba(11,18,28,.45) 100%)}.hero-content{position:relative;z-index:1;padding:86px 0 76px;max-width:var(--max)}.eyebrow,.section-label{font-size:.76rem;text-transform:uppercase;letter-spacing:.14em;font-weight:850;color:var(--red);margin:0 0 13px}.hero .eyebrow{color:#ffb9bf}.hero h1{font-size:clamp(2.5rem,5.4vw,4.7rem);line-height:1.06;letter-spacing:-.045em;max-width:820px;margin:0 0 22px;font-weight:850}.hero-copy{font-size:clamp(1.05rem,1.55vw,1.24rem);line-height:1.6;color:#f1f3f6;max-width:680px;margin:0 0 28px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.btn{padding:14px 23px;min-height:50px;font-size:.95rem}.btn:hover{transform:translateY(-2px);text-decoration:none}.btn-primary{background:var(--red);color:#fff}.btn-primary:hover{background:var(--red-dark);color:#fff}.btn-outline-light{border:1px solid rgba(255,255,255,.75);color:#fff;background:rgba(255,255,255,.04)}.btn-outline-light:hover{background:#fff;color:var(--ink)}.btn-light{background:#fff;color:var(--red);white-space:nowrap}.btn-light:hover{background:#f6eef0;color:var(--red-dark)}.hero-note{font-size:.82rem;color:#dbe1e8;margin:18px 0 0}.hero-compact{min-height:440px}.trust-strip{background:#fff;border-bottom:1px solid var(--line)}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;padding:23px 0}.trust-grid>div{display:flex;align-items:center;gap:13px}.trust-icon{width:38px;height:38px;border-radius:50%;background:var(--red-soft);color:var(--red);display:grid;place-items:center;font-size:.75rem;font-weight:900;flex:0 0 auto}.trust-grid strong,.trust-grid small{display:block}.trust-grid strong{font-size:.91rem}.trust-grid small{font-size:.79rem;color:var(--muted);margin-top:1px}.breadcrumbs{display:flex;gap:10px;align-items:center;color:#77808c;font-size:.83rem;padding-top:18px}.breadcrumbs a{font-weight:700}.section{padding:80px 0}.section-muted{background:var(--wash)}.section h2{font-size:clamp(1.85rem,3vw,2.7rem);line-height:1.16;letter-spacing:-.035em;margin:0 0 18px}.section p{color:#485464;margin:0 0 17px}.section p:last-child{margin-bottom:0}.split-section{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.content-figure{margin:0;border-radius:var(--radius);overflow:hidden;background:#e9edf1;box-shadow:0 15px 38px rgba(16,25,36,.09)}.content-figure img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}.content-figure figcaption{font-size:.75rem;color:#657080;background:#fff;padding:10px 14px;line-height:1.45}.ref-note{border-left:4px solid var(--red);background:#fff7f7;padding:16px 18px;border-radius:0 12px 12px 0;color:#4d3034;font-size:.91rem;margin-top:22px}.ref-note strong{color:#79212b}.section-heading-row{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:30px}.section-heading-row>div{max-width:760px}.section-heading-row p{margin-bottom:0}.text-link{font-weight:800;color:var(--red);white-space:nowrap}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.service-card,.info-card,.quote-card,.contact-card{border:1px solid var(--line);border-radius:16px;background:#fff;padding:24px;box-shadow:0 8px 26px rgba(21,31,43,.035)}.service-card{display:flex;flex-direction:column;min-height:230px}.service-kicker{font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;font-weight:800;color:var(--red)}.service-card h3,.info-card h3{font-size:1.17rem;line-height:1.25;margin:10px 0}.service-card p,.info-card p{font-size:.92rem;color:#5b6572}.card-link{margin-top:auto;font-size:.9rem;font-weight:800}.three-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}.info-card{position:relative}.info-card p{margin-bottom:10px}.info-card>a{font-weight:800;font-size:.9rem}.card-number{font-size:.73rem;color:var(--red);font-weight:900;letter-spacing:.12em}.source-note{font-size:.78rem!important;margin-top:17px!important}.check-list,.number-list{padding:0;margin:20px 0 0;list-style:none}.check-list li{position:relative;padding:0 0 13px 28px;color:#495563}.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--red);font-weight:900}.number-list{counter-reset:step}.number-list li{counter-increment:step;position:relative;padding:0 0 18px 52px;color:#495563;min-height:37px}.number-list li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:-2px;width:34px;height:34px;border-radius:50%;background:var(--red-soft);color:var(--red);display:grid;place-items:center;font-weight:900;font-size:.72rem}.context-link{border-top:1px solid var(--line);padding-top:22px;margin-top:28px!important}.safety-grid{display:grid;grid-template-columns:1.5fr .8fr;gap:48px;align-items:center}.safety-panel{background:#fff;border:1px solid #f1d7da;border-radius:18px;padding:30px;box-shadow:0 10px 34px rgba(20,25,33,.05)}.safety-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--red);color:white;font-weight:900;font-size:1.2rem}.safety-panel h3{margin:16px 0 8px;font-size:1.25rem}.safety-panel p{font-size:.91rem}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}.quote-card h3,.contact-card h3{font-size:1.35rem;margin:0 0 12px}.quote-card ol{padding-left:20px;color:#55606d}.quote-card li{padding:0 0 10px}.btn-block{display:flex;width:100%}.small-note{font-size:.78rem!important;color:#707b88!important;margin-top:14px!important}.faq-list{border-top:1px solid var(--line);margin-top:28px}.faq-item{border-bottom:1px solid var(--line);padding:0}.faq-item summary{list-style:none;cursor:pointer;font-weight:800;padding:19px 40px 19px 0;position:relative;color:var(--ink)}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";position:absolute;right:5px;top:17px;color:var(--red);font-size:1.45rem}.faq-item[open] summary:after{content:"−"}.faq-answer{padding:0 30px 18px 0}.faq-answer p{font-size:.94rem}.link-list{display:flex;flex-wrap:wrap;gap:10px 22px;padding:0;margin:24px 0 0;list-style:none}.link-list li{border:1px solid var(--line);border-radius:999px;padding:9px 15px;background:#fff;font-weight:700;font-size:.9rem}.link-list a{color:var(--ink)}.link-list a:hover{color:var(--red)}.cta-band{padding:48px 0;background:linear-gradient(115deg,var(--red-dark),var(--red));color:#fff}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:38px}.cta-inner h2{font-size:clamp(1.7rem,3.3vw,2.6rem);line-height:1.12;margin:0 0 12px;letter-spacing:-.03em}.cta-inner p{color:#ffe9eb;max-width:690px;margin:0}.eyebrow-light{color:#ffc7cc}.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}.steps-grid article{border-top:3px solid var(--red);background:#fff;border-radius:0 0 15px 15px;padding:22px 20px;box-shadow:0 7px 22px rgba(20,30,42,.04)}.steps-grid span{color:var(--red);font-weight:900;font-size:.8rem;letter-spacing:.12em}.steps-grid h3{font-size:1.08rem;margin:12px 0 8px}.steps-grid p{font-size:.9rem;margin:0}.photo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:25px}.photo-grid .content-figure img{aspect-ratio:4/3}.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:start}.contact-phone{display:block;font-size:clamp(2rem,4vw,3.3rem);font-weight:900;letter-spacing:-.04em;color:var(--ink);margin:18px 0}.contact-card{background:var(--wash);box-shadow:none}.contact-card p{margin-bottom:15px}.site-footer{background:#131d29;color:#e7ebf0}.footer-main{display:grid;grid-template-columns:1.45fr 1fr 1fr 1fr;gap:42px;padding:60px 0 42px}.footer-brand img{width:185px;margin-bottom:18px}.footer-brand p{max-width:290px;color:#b8c1cc;font-size:.91rem}.footer-phone{display:inline-block;color:#fff;font-size:1.22rem;font-weight:850;margin-top:4px}.site-footer h2{font-size:.98rem;color:#fff;margin:0 0 17px}.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{margin-bottom:9px;font-size:.85rem;color:#b8c1cc}.site-footer li a{color:#cbd2da}.site-footer li a:hover{color:#fff}.footer-call{display:inline-block;background:var(--red);color:#fff;font-weight:800;padding:10px 16px;border-radius:999px;margin-top:10px}.footer-disclosure{border-top:1px solid rgba(255,255,255,.13);padding:24px 0;color:#aeb8c4;font-size:.78rem;line-height:1.65}.footer-disclosure p{margin:0 0 10px}.footer-disclosure strong{color:#eef1f5}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);font-size:.78rem;color:#9eabb9}.footer-bottom .container{display:flex;justify-content:space-between;gap:20px;padding:17px 0}.footer-bottom a{color:#cbd2da}.mobile-sticky-cta{display:none}.mobile-sticky-cta a{flex:1;min-width:0;border-radius:12px;padding:11px 9px 10px;text-align:center;color:#fff;font-weight:850;font-size:.94rem;line-height:1.2;box-shadow:0 4px 15px rgba(0,0,0,.16)}.mobile-sticky-cta span{display:block;font-size:.69rem;font-weight:600;opacity:.9;margin-top:3px}.sticky-call{background:var(--red)}.sticky-quote{background:#202b38}.mobile-sticky-cta{transform:translateY(130%);opacity:0;transition:transform .25s ease,opacity .25s ease}.mobile-sticky-cta.is-visible{transform:translateY(0);opacity:1}
@media (max-width:1024px){.mobile-menu-toggle{display:flex}.primary-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 20px 30px rgba(16,25,36,.12);padding:15px 22px 22px;align-items:stretch;flex-direction:column;gap:0;max-height:calc(100vh - 110px);overflow:auto}.primary-nav.is-open{display:flex}.nav-link,.nav-dropdown-toggle{width:100%;text-align:left;padding:14px 0}.nav-dropdown-toggle{justify-content:space-between}.nav-dropdown-menu{position:static;min-width:0;max-height:none;box-shadow:none;border:0;border-radius:0;padding:0 0 8px 14px}.header-call{align-self:flex-start;margin-top:12px}.mobile-sticky-cta{display:flex;position:fixed;z-index:130;left:12px;right:12px;bottom:calc(10px + env(safe-area-inset-bottom));gap:9px;padding:8px;background:rgba(255,255,255,.97);border:1px solid rgba(0,0,0,.07);border-radius:17px;box-shadow:0 8px 35px rgba(17,26,37,.2)}body{padding-bottom:calc(82px + env(safe-area-inset-bottom))}}
@media (min-width:1025px){.mobile-sticky-cta{display:none!important}body{padding-bottom:0}}
@media (max-width:800px){.container{width:min(100% - 36px,var(--max))}.header-inner{min-height:70px}.brand img{width:165px}.utility-inner{min-height:34px;font-size:.75rem}.utility-inner>span{max-width:67%}.hero{min-height:510px}.hero-content{padding:72px 0 65px}.hero h1{font-size:clamp(2.3rem,8vw,3.6rem)}.hero-shade{background:linear-gradient(90deg,rgba(11,18,28,.86),rgba(11,18,28,.55))}.trust-grid{grid-template-columns:1fr;gap:14px;padding:19px 0}.section{padding:62px 0}.split-section,.two-col,.safety-grid,.contact-grid{grid-template-columns:1fr;gap:28px}.service-grid{grid-template-columns:repeat(2,1fr)}.three-cards{grid-template-columns:1fr 1fr}.steps-grid{grid-template-columns:1fr 1fr}.footer-main{grid-template-columns:1fr 1fr;gap:30px}.photo-grid{grid-template-columns:1fr 1fr}.cta-inner{align-items:flex-start;flex-direction:column}.cta-band{padding:42px 0}}
@media (max-width:520px){.container{width:calc(100% - 30px)}.utility-inner{font-size:.69rem;gap:8px}.utility-inner>span{max-width:70%}.utility-inner a{white-space:nowrap}.hero{min-height:480px}.hero-content{padding:60px 0}.hero h1{font-size:2.38rem}.hero-copy{font-size:1rem}.hero-actions{align-items:stretch;flex-direction:column;max-width:310px}.hero-actions .btn{width:100%}.breadcrumbs{font-size:.75rem}.section{padding:52px 0}.section-heading-row{align-items:flex-start;flex-direction:column}.service-grid,.three-cards,.steps-grid,.photo-grid{grid-template-columns:1fr}.service-card{min-height:0}.footer-main{grid-template-columns:1fr;gap:27px;padding:45px 0 30px}.footer-bottom .container{flex-direction:column;gap:6px}.contact-phone{font-size:2.35rem}.mobile-sticky-cta{left:8px;right:8px;gap:7px;padding:6px}.mobile-sticky-cta a{font-size:.86rem;padding:10px 6px}.mobile-sticky-cta span{font-size:.62rem}.cta-inner .btn{width:100%}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}