:root{
  --blue:#2f78be; --blue-d:#1d5694; --navy:#0f2a4a; --red:#e0303a; --yellow:#fbc52d;
  --ink:#16243a; --muted:#5b6b80; --line:#e4ebf3; --bg:#ffffff; --soft:#f3f7fc;
  --r:20px; --shadow:0 20px 50px -20px rgba(15,42,74,.25);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:Mulish,"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.12;font-weight:900;letter-spacing:-.02em}
h2{font-size:clamp(2rem,4vw,3rem)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue)}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--red)}
.lead{color:var(--muted);font-size:1.1rem;max-width:640px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:999px;font-weight:800;font-size:1rem;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer;border:0}
.btn:hover{transform:translateY(-2px)}
.btn-red{background:var(--red);color:#fff;box-shadow:0 12px 30px -10px rgba(224,48,58,.7)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 12px 30px -10px rgba(47,120,190,.7)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.5);backdrop-filter:blur(6px)}
.btn svg{width:18px;height:18px}

/* header */
header{position:fixed;inset:0 0 auto 0;z-index:50;transition:background .3s,box-shadow .3s}
header.solid{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 6px 30px -12px rgba(15,42,74,.2)}
.topbar{background:var(--navy);color:#cfe0f3;font-size:.85rem;transition:margin .3s}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px}
.topbar b{color:var(--yellow)}
header.scrolled .topbar{margin-top:-38px}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:52px;width:auto;display:block}
.f-logo{display:inline-flex;background:#fff;border-radius:14px;padding:10px 16px;margin-bottom:18px}
.f-logo img{height:46px}
.menu{display:flex;align-items:center;gap:28px;font-weight:700}
.menu a.l{color:#fff;opacity:.9;transition:opacity .2s,color .2s}
header.solid .menu a.l{color:var(--ink)}
.menu a.l:hover{opacity:1;color:var(--yellow)} header.solid .menu a.l:hover{color:var(--blue)}
.lang{display:flex;background:rgba(255,255,255,.15);border-radius:999px;padding:4px}
header.solid .lang{background:var(--soft)}
.lang button{border:0;background:none;font:inherit;font-weight:800;font-size:.8rem;padding:6px 10px;border-radius:999px;cursor:pointer;color:#fff}
header.solid .lang button{color:var(--muted)}
.lang button.on{background:#fff;color:var(--blue)!important}
header.solid .lang button.on{background:var(--blue);color:#fff!important}
.burger{display:none;background:none;border:0;cursor:pointer;width:44px;height:44px}
.burger span{display:block;height:3px;width:26px;margin:5px auto;border-radius:3px;background:#fff;transition:.3s}
header.solid .burger span{background:var(--ink)}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;color:#fff;overflow:hidden;padding:150px 0 90px}
.hero-bg{position:absolute;inset:0;background:url(https://static.wixstatic.com/media/0a2a7e_6b84b27cf91343b985c34669a5889a33~mv2.jpg) center/cover;transform:scale(1.08);will-change:transform}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(15,42,74,.95) 0%,rgba(29,86,148,.82) 45%,rgba(47,120,190,.35) 100%)}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.25fr .75fr;gap:50px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:10px;background:rgba(251,197,45,.16);color:var(--yellow);border:1px solid rgba(251,197,45,.4);padding:8px 16px;border-radius:999px;font-weight:800;font-size:.85rem}
.pill i{width:8px;height:8px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 0 rgba(251,197,45,.7);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 12px rgba(251,197,45,0)}100%{box-shadow:0 0 0 0 rgba(251,197,45,0)}}
.hero h1{font-size:clamp(2.5rem,6vw,4.6rem);margin:22px 0 20px}
.hero h1 em{font-style:normal;color:var(--yellow)}
.hero p{font-size:1.2rem;color:#dbe7f5;max-width:580px}
.hero .ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.glass{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(14px);border-radius:24px;padding:28px}
.glass h3{font-size:1.1rem;margin-bottom:14px}
.glass ul{list-style:none;display:grid;gap:12px}
.glass li{display:flex;gap:12px;align-items:flex-start;color:#e8f0fa}
.tick{flex:none;width:24px;height:24px;border-radius:50%;background:var(--yellow);color:var(--navy);display:grid;place-items:center;font-weight:900;font-size:.8rem}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px;padding-top:22px;border-top:1px solid rgba(255,255,255,.2)}
.stats b{display:block;font-size:1.8rem;font-weight:900;color:#fff}
.stats span{font-size:.78rem;color:#bcd2ea}
.hero-side{display:grid;gap:16px}
.pipe-anim{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(14px);border-radius:24px;padding:14px 18px}
.pipe-anim svg{width:100%;height:auto;display:block}
.pflow{stroke-dasharray:10 14;animation:flow 1s linear infinite}
.needle{transform-origin:50px 62px;animation:needle 3.2s ease-in-out infinite}
@keyframes needle{0%,100%{transform:rotate(-50deg)}45%{transform:rotate(38deg)}60%{transform:rotate(26deg)}75%{transform:rotate(34deg)}}
.valve{transform-origin:187px 30px;animation:valve 6s ease-in-out infinite}
@keyframes valve{0%,100%{transform:rotate(0)}50%{transform:rotate(180deg)}}
.drop{opacity:0;animation:drop 1.6s ease-in infinite}
@keyframes drop{0%{transform:translateY(-6px);opacity:0}15%{opacity:1}80%{transform:translateY(18px);opacity:1}100%{transform:translateY(20px);opacity:0}}
.ripple{transform-box:fill-box;transform-origin:center;opacity:0;animation:ripple 1.6s ease-out infinite;animation-delay:.0s}
@keyframes ripple{0%,75%{transform:scale(.2);opacity:0}80%{opacity:.9}100%{transform:scale(1.2);opacity:0}}
.bub{animation:bub 3s linear infinite;opacity:0}
@keyframes bub{0%{transform:translateX(0);opacity:0}10%{opacity:.8}90%{opacity:.8}100%{transform:translateX(190px);opacity:0}}
.scroll-hint{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;width:26px;height:42px;border:2px solid rgba(255,255,255,.6);border-radius:20px}
.scroll-hint::after{content:"";position:absolute;left:50%;top:8px;width:4px;height:8px;margin-left:-2px;border-radius:2px;background:#fff;animation:sh 1.8s infinite}
@keyframes sh{to{transform:translateY(14px);opacity:0}}

/* marquee */
.strip{background:var(--blue);color:#fff;overflow:hidden;padding:18px 0}
.strip .track{display:flex;gap:50px;white-space:nowrap;width:max-content;animation:mq 30s linear infinite;font-weight:800;font-size:1.05rem}
.strip .track span{display:inline-flex;align-items:center;gap:50px}
.strip .track span::after{content:"✦";color:var(--yellow)}
@keyframes mq{to{transform:translateX(-50%)}}

section{padding:110px 0}
.head{text-align:center;max-width:760px;margin:0 auto 60px}
.head h2{margin:14px 0}
.head .lead{margin:0 auto}
.accent{color:var(--red)}

/* why */
.why{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.imgstack{position:relative}
.imgstack .a{border-radius:var(--r);box-shadow:var(--shadow);aspect-ratio:4/5;object-fit:cover;width:85%}
.imgstack .b{position:absolute;right:0;bottom:-40px;width:52%;aspect-ratio:1;object-fit:cover;border-radius:var(--r);border:8px solid #fff;box-shadow:var(--shadow)}
.boiler-art{position:relative}
.boiler-art svg{width:100%;height:auto;display:block;border-radius:var(--r);box-shadow:var(--shadow)}
.boiler-art .badge{left:-14px;top:24px}
.fl{transform-box:fill-box;transform-origin:50% 100%;animation:flick 1.1s ease-in-out infinite alternate}
@keyframes flick{0%{transform:scale(1,.82)}50%{transform:scale(.9,1.12)}100%{transform:scale(1.06,.94)}}
.glow{animation:glowp 1.8s ease-in-out infinite alternate}
@keyframes glowp{from{opacity:.55}to{opacity:1}}
.flow{stroke-dasharray:10 14;animation:flow 1.1s linear infinite}
.gasf{stroke-dasharray:6 10;animation-duration:2.2s}
@keyframes flow{to{stroke-dashoffset:-24}}
.puff{transform-box:fill-box;transform-origin:center;opacity:0;animation:puff 3.6s ease-out infinite}
@keyframes puff{0%{transform:translate(0,0) scale(.45);opacity:0}15%{opacity:.85}100%{transform:translate(-16px,-62px) scale(1.9);opacity:0}}
.wave{opacity:0;animation:wave 2.7s ease-in-out infinite}
@keyframes wave{0%{transform:translateY(10px);opacity:0}40%{opacity:.85}100%{transform:translateY(-26px);opacity:0}}
.heat{opacity:0;animation:heat 4s ease-in-out infinite alternate}
@keyframes heat{from{opacity:0}to{opacity:.12}}
.mini-flame{transform-box:fill-box;transform-origin:50% 100%;animation:flick 1.4s ease-in-out infinite alternate}
.badge{position:absolute;left:-14px;top:40px;background:var(--red);color:#fff;border-radius:18px;padding:18px 22px;box-shadow:var(--shadow);text-align:center}
.badge b{display:block;font-size:2.4rem;font-weight:900;line-height:1}
.badge span{font-size:.8rem;font-weight:700}
.benefits{display:grid;gap:16px;margin-top:30px}
.ben{display:flex;gap:18px;padding:20px;border-radius:18px;border:1px solid var(--line);transition:.25s;background:#fff}
.ben:hover{border-color:transparent;box-shadow:var(--shadow);transform:translateX(6px)}
.ico{flex:none;width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:var(--blue)}
.ico svg{width:26px;height:26px}
.ben:nth-child(2) .ico{color:var(--red);background:#fdeced}
.ben:nth-child(3) .ico{color:#c99300;background:#fff6db}
.ben h3{font-size:1.1rem;margin-bottom:4px}
.ben p{color:var(--muted);font-size:.96rem}
.law{margin-top:26px;display:flex;gap:14px;align-items:center;background:linear-gradient(90deg,#fff6db,#fff);border-left:4px solid var(--yellow);padding:16px 20px;border-radius:12px;font-weight:700}

/* included */
.included{background:var(--soft);position:relative;overflow:hidden}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:s}
.step{background:#fff;border-radius:var(--r);padding:30px;position:relative;transition:.3s;border:1px solid var(--line)}
.step:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.step::before{counter-increment:s;content:"0" counter(s);font-size:3rem;font-weight:900;color:transparent;-webkit-text-stroke:1.5px var(--blue);opacity:.35;position:absolute;right:22px;top:12px}
.step h3{font-size:1.15rem;margin:16px 0 8px}
.step p{color:var(--muted);font-size:.95rem}

/* services */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc{position:relative;border-radius:var(--r);overflow:hidden;min-height:360px;color:#fff;display:flex;align-items:flex-end;isolation:isolate}
.svc img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform .7s}
.svc::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(15,42,74,0) 25%,rgba(15,42,74,.95) 100%)}
.svc:hover img{transform:scale(1.08)}
.svc .in{padding:26px}
.svc .tag{display:inline-block;background:var(--yellow);color:var(--navy);font-size:.72rem;font-weight:900;padding:4px 10px;border-radius:999px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.06em}
.svc.main .tag{background:var(--red);color:#fff}
.svc h3{font-size:1.35rem;margin-bottom:6px}
.svc p{font-size:.92rem;color:#d7e4f3}

/* sanitair detail */
.sanitair{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:center;margin-top:70px;background:var(--soft);border-radius:28px;padding:34px}
.san-img img{border-radius:var(--r);aspect-ratio:4/5;object-fit:cover;width:100%;box-shadow:var(--shadow)}
.san-txt h3{font-size:clamp(1.7rem,3vw,2.4rem);margin:12px 0}
.san-txt>p{color:var(--muted);font-size:1.05rem}
.san-cols{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 26px}
.san-cols>div{background:#fff;border-radius:18px;padding:20px;border:1px solid var(--line)}
.san-cols>div:first-child{border-top:4px solid var(--blue)}
.san-cols>div:last-child{border-top:4px solid var(--red)}
.san-cols h4{font-size:1.05rem;margin-bottom:10px}
.san-cols ul{list-style:none;display:grid;gap:8px}
.san-cols li{display:flex;gap:10px;color:var(--muted);font-size:.95rem}
.san-cols li::before{content:"✓";flex:none;width:20px;height:20px;border-radius:50%;background:var(--yellow);color:var(--navy);display:grid;place-items:center;font-size:.7rem;font-weight:900;margin-top:2px}
/* airco */
.airco{background:linear-gradient(160deg,#eef6ff,#ffffff 60%);position:relative;overflow:hidden}
.air-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.air-feats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:28px 0}
.air-f{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;gap:14px;align-items:flex-start}
.air-f .ico{width:46px;height:46px}
.air-f h4{font-size:1rem;margin-bottom:2px}
.air-f p{font-size:.88rem;color:var(--muted)}
.air-art svg{width:100%;height:auto;display:block;border-radius:var(--r);box-shadow:var(--shadow)}
.breeze{fill:none;stroke:#7cc4ff;stroke-width:4;stroke-linecap:round;stroke-dasharray:60 200;animation:breeze 3s ease-in-out infinite}
@keyframes breeze{from{stroke-dashoffset:260;opacity:0}20%{opacity:1}to{stroke-dashoffset:0;opacity:0}}
.flake{transform-box:fill-box;transform-origin:center;animation:flake 4s linear infinite;opacity:0}
@keyframes flake{0%{transform:translate(0,0) rotate(0);opacity:0}15%{opacity:.9}100%{transform:translate(-10px,120px) rotate(180deg);opacity:0}}
.louver{transform-box:fill-box;transform-origin:50% 0;animation:louver 4s ease-in-out infinite alternate}
@keyframes louver{from{transform:rotate(-8deg)}to{transform:rotate(10deg)}}
/* about */
.about{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
.about .quote{font-size:1.25rem;font-weight:700;color:var(--ink);margin:22px 0;padding-left:20px;border-left:4px solid var(--red)}
.about p{color:var(--muted);margin-bottom:14px}
.sign{display:flex;align-items:center;gap:16px;margin-top:26px}
.sign .av{width:58px;height:58px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900;font-size:1.3rem}
.sign b{display:block}
.sign span{color:var(--muted);font-size:.9rem}
.about-img{position:relative}
.about-img img{border-radius:var(--r);aspect-ratio:1/1;object-fit:cover;box-shadow:var(--shadow)}
.about-img .card{position:absolute;left:-30px;bottom:30px;background:#fff;border-radius:18px;padding:18px 22px;box-shadow:var(--shadow);display:flex;gap:14px;align-items:center}
.about-img .card b{font-size:1.8rem;color:var(--blue);font-weight:900}

/* booking */
.booking{background:linear-gradient(135deg,var(--navy),var(--blue-d));color:#fff;position:relative;overflow:hidden}
.booking::before{content:"";position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(251,197,45,.18),transparent 70%);right:-200px;top:-200px}
.booking .eyebrow{color:var(--yellow)}
.booking .lead{color:#c9dbef}
.book-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start;position:relative}
.book-frame{background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 30px 60px -20px rgba(0,0,0,.5);min-height:640px}
.book-frame iframe{width:100%;height:700px;border:0;display:block}
.book-side .opt{display:flex;gap:16px;align-items:center;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:18px;padding:18px;margin-top:16px;transition:.25s}
.book-side .opt:hover{background:rgba(255,255,255,.16)}
.book-side .opt .ico{background:var(--yellow);color:var(--navy)}
.book-side .opt b{display:block;font-size:1.1rem}
.book-side .opt span{color:#c9dbef;font-size:.9rem}

/* faq */
.faq{max-width:820px;margin:0 auto}
details{border-bottom:1px solid var(--line);padding:22px 0}
summary{list-style:none;cursor:pointer;font-weight:800;font-size:1.12rem;display:flex;justify-content:space-between;gap:20px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";flex:none;width:32px;height:32px;border-radius:50%;background:var(--soft);color:var(--blue);display:grid;place-items:center;font-size:1.3rem;transition:.3s}
details[open] summary::after{transform:rotate(45deg);background:var(--red);color:#fff}
details p{color:var(--muted);margin-top:12px}

/* contact */
.contact{background:var(--soft)}
.c-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:30px}
.c-card{background:#fff;border-radius:var(--r);padding:36px;box-shadow:var(--shadow)}
.c-row{display:flex;gap:16px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
.c-row:last-child{border:0}
.c-row small{display:block;color:var(--muted);font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.c-row b{font-size:1.1rem}
.map{border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);min-height:420px}
.map iframe{width:100%;height:100%;min-height:420px;border:0;display:block}

footer{background:var(--navy);color:#a9bfd8;padding:60px 0 30px}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
footer h4{color:#fff;margin-bottom:14px}
footer .logo .w{fill:#fff}
footer p,footer a{font-size:.95rem}
footer ul{list-style:none;display:grid;gap:8px}
footer a:hover{color:var(--yellow)}
.copy{padding-top:18px;font-size:.85rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.legal-line{padding-top:20px;font-size:.82rem;color:#8ea7c3}
.legal-links{display:flex;flex-wrap:wrap;gap:16px}
.legal-links a,.legal-links button{color:#cfe0f3;text-decoration:underline;text-underline-offset:3px;font:inherit;background:none;border:0;cursor:pointer;padding:0}
.legal-links a:hover,.legal-links button:hover{color:var(--yellow)}
/* consent */
.consent-wrap{position:relative}
.consent-wrap iframe:not([src]){visibility:hidden}
.consent-ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:28px;background:var(--soft);color:var(--ink)}
.consent-ph svg{width:40px;height:40px;color:var(--blue)}
.consent-ph p{max-width:380px;color:var(--muted);font-size:.95rem}
.consent-ph a{color:var(--blue);font-weight:700;font-size:.9rem;text-decoration:underline}
.consent-wrap.loaded .consent-ph{display:none}
.cookie{position:fixed;left:20px;bottom:20px;z-index:80;max-width:440px;background:#fff;color:var(--ink);border-radius:20px;padding:22px;box-shadow:0 30px 60px -20px rgba(15,42,74,.45);border:1px solid var(--line)}
.cookie[hidden]{display:none}
.cookie h3{font-size:1.1rem;margin-bottom:8px}
.cookie p{font-size:.9rem;color:var(--muted)}
.cookie .ck-more{margin-top:8px}
.cookie .ck-more a{color:var(--blue);font-weight:700;text-decoration:underline}
.ck-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.ck-b{justify-content:center;background:var(--blue);color:#fff;padding:13px 14px;font-size:.92rem}
@media (max-width:600px){.cookie{left:10px;right:10px;bottom:10px;max-width:none;padding:16px}.cookie h3{font-size:1rem;margin-bottom:4px}.cookie p{font-size:.82rem;line-height:1.45}.ck-btns{margin-top:12px}.ck-b{padding:12px 8px;font-size:.85rem}}

.fab{position:fixed;right:20px;bottom:20px;z-index:60;width:62px;height:62px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;box-shadow:0 14px 30px -8px rgba(224,48,58,.8);animation:ring 3s infinite}
.fab svg{width:28px;height:28px}
@keyframes ring{0%,90%,100%{transform:rotate(0)}92%{transform:rotate(-14deg)}94%{transform:rotate(14deg)}96%{transform:rotate(-10deg)}98%{transform:rotate(8deg)}}

.js .reveal{opacity:0;transform:translateY(40px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}

@media (max-width:1000px){
  .hero .wrap,.why,.about,.book-grid,.c-grid{grid-template-columns:1fr}
  .services{grid-template-columns:1fr 1fr}
  .sanitair,.air-grid{grid-template-columns:1fr}
  .san-img img{aspect-ratio:16/10}
  .steps{grid-template-columns:1fr 1fr}
  .f-grid{grid-template-columns:1fr}
  .imgstack{margin-bottom:50px}
}
.mbar{display:none}
.cal-link{display:none}
@media (max-width:820px){
  .burger{display:block;position:relative;z-index:2}
  .menu{position:fixed;inset:0;height:100dvh;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:4px;background:#fff;padding:110px 24px 40px;opacity:0;visibility:hidden;transform:translateY(-12px);transition:opacity .3s,transform .3s,visibility .3s;z-index:1;overflow-y:auto}
  .menu.open{opacity:1;visibility:visible;transform:none}
  .menu a.l{color:var(--ink)!important;font-size:1.5rem;font-weight:900;padding:12px 0;border-bottom:1px solid var(--line)}
  .lang{background:var(--soft)!important;align-self:flex-start;margin-top:18px}
  .lang button{color:var(--muted)!important;font-size:.95rem;padding:10px 16px}
  .lang button.on{background:var(--blue)!important;color:#fff!important}
  .menu .btn{margin-top:18px;justify-content:center}
  header.menu-open{backdrop-filter:none;background:#fff}
  .logo{position:relative;z-index:2}
  header.menu-open .logo .w{fill:#5a5e66}
  header.menu-open .burger span{background:var(--ink)}
  header.menu-open .burger span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  header.menu-open .burger span:nth-child(2){opacity:0}
  header.menu-open .burger span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .topbar .hide-s{display:none}
  .topbar .wrap{justify-content:center;font-size:.8rem}
  header.scrolled .topbar{margin-top:-34px}
  .boiler-art .badge{left:10px;top:10px}
  .nav{height:66px}
  .logo img{height:44px}
  /* sticky action bar replaces floating button */
  .fab{display:none}
  .mbar{display:grid;grid-template-columns:1fr 1.3fr;gap:10px;position:fixed;left:0;right:0;bottom:0;z-index:55;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:0 -8px 30px -12px rgba(15,42,74,.3);transform:translateY(110%);transition:transform .35s}
  .mbar.show{transform:none}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px 10px;border-radius:14px;font-weight:900;font-size:.98rem}
  .mbar .c{background:var(--soft);color:var(--blue)}
  .mbar .b{background:var(--red);color:#fff}
  .mbar svg{width:18px;height:18px}
  body{padding-bottom:84px}
}
@media (max-width:600px){
  section{padding:72px 0}
  .wrap{padding:0 16px}
  h2{font-size:clamp(1.75rem,8vw,2.2rem)}
  .head{margin-bottom:36px}
  .lead{font-size:1rem}
  /* hero */
  .hero{min-height:auto;padding:130px 0 60px}
  .hero h1{font-size:clamp(2.2rem,11vw,2.9rem);margin:18px 0 16px}
  .hero p{font-size:1.05rem}
  .hero .ctas{flex-direction:column}
  .hero .ctas .btn{justify-content:center;width:100%}
  .hero .wrap{gap:34px}
  .glass{padding:22px}
  .stats b{font-size:1.5rem}
  .scroll-hint{display:none}
  .pill{font-size:.78rem}
  .strip{padding:14px 0}
  .strip .track{font-size:.95rem}
  /* image stack */
  .imgstack{margin-bottom:30px}
  .imgstack .a{width:100%;aspect-ratio:4/3}
  .imgstack .b{width:42%;bottom:-24px;right:10px;border-width:5px}
  .badge{left:12px;top:12px;padding:12px 16px}
  .badge b{font-size:1.8rem}
  .ben{padding:16px;gap:14px}
  .ico{width:44px;height:44px}
  .ben:hover{transform:none}
  /* steps: compact */
  .steps{grid-template-columns:1fr;gap:12px}
  .step{padding:20px 20px 20px 64px}
  .step .tick{position:absolute;left:20px;top:22px;width:30px;height:30px}
  .step h3{margin:0 0 4px;padding-right:46px}
  .mbar a{font-size:.92rem;white-space:nowrap}
  .step::before{font-size:2rem;top:10px;right:16px}
  /* services: swipe carousel */
  .services{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;margin:0 -16px;padding:0 16px 10px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .services::-webkit-scrollbar{display:none}
  .svc{flex:0 0 82%;min-height:380px;scroll-snap-align:center}
  .swipe-hint{display:flex!important}
  .sanitair{padding:18px;gap:24px;margin-top:44px;border-radius:22px}
  .san-cols,.air-feats{grid-template-columns:1fr}
  .san-txt .btn{width:100%;justify-content:center}
  .air-grid{gap:34px}
  /* about */
  .about{gap:40px}
  .about-img img{aspect-ratio:4/3}
  .about-img .card{left:12px;bottom:-22px;padding:12px 16px}
  .about-img{margin-bottom:22px}
  .about .quote{font-size:1.08rem}
  /* booking */
  .book-grid{gap:28px}
  .book-frame{min-height:0;border-radius:18px}
  .book-frame iframe{height:620px}
  .cal-link{display:flex;justify-content:center;margin-top:14px}
  /* faq */
  summary{font-size:1rem}
  details{padding:18px 0}
  /* contact */
  .c-card{padding:22px}
  .c-row b{font-size:1rem}
  .c-card .btn{width:100%;justify-content:center}
  .map,.map iframe{min-height:280px}
  footer{padding:50px 0 24px}
}
.swipe-hint{display:none;align-items:center;justify-content:center;gap:6px;margin-top:14px;color:var(--muted);font-size:.85rem;font-weight:700}
.dots{display:flex;gap:6px;justify-content:center;margin-top:12px}
.dots i{width:8px;height:8px;border-radius:8px;background:var(--line);transition:.3s}
.dots i.on{width:22px;background:var(--blue)}
@media (min-width:601px){.dots{display:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}}