:root{--navy:#102f54;--blue:#1687df;--sky:#eaf5ff;--pale:#f6faff;--ink:#1b3656;--muted:#5e7188;--line:#dceaf6;--white:#fff;--radius:18px;--shadow:0 14px 40px rgba(25,74,120,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:#fff;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.site-header{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,5vw,78px);gap:28px;background:rgba(255,255,255,.96);border-bottom:1px solid #e7f0f8;position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--navy);font-size:23px;font-weight:800;letter-spacing:-.8px;line-height:1.1}.brand img{object-fit:contain}.brand b{color:var(--blue)}.brand small{display:block;font-size:8px;letter-spacing:1px;font-weight:700;margin-top:5px;color:#7188a0}.nav{display:flex;align-items:center;gap:clamp(12px,2vw,28px);font-size:12px;font-weight:700;color:#425a73}.nav a:hover{color:var(--blue)}.nav .nav-cta{padding:11px 17px;background:var(--blue);color:#fff;border-radius:9px}.menu-toggle{display:none}.hero{min-height:535px;display:grid;grid-template-columns:1.04fr .96fr;overflow:hidden;background:linear-gradient(120deg,#fff 0%,#f6fbff 60%,#e7f4ff 100%);border-bottom:1px solid var(--line)}.hero-copy{padding:72px 3vw 54px max(6vw,30px);align-self:center;position:relative;z-index:1}.eyebrow{color:var(--blue);font-size:11px;letter-spacing:1.8px;font-weight:800;text-transform:uppercase;margin:0 0 13px}.hero h1{font-size:clamp(35px,4.2vw,59px);line-height:1.08;letter-spacing:-2px;color:var(--navy);margin:0;max-width:680px}.hero h1 span{color:var(--blue)}.lead{max-width:580px;color:#5b6f84;font-size:16px;margin:23px 0 26px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:15px;padding:14px 19px;border-radius:9px;font:700 13px inherit;cursor:pointer;transition:transform .2s,box-shadow .2s}.button:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.primary{background:linear-gradient(135deg,#1687df,#0870c7);color:#fff}.secondary{border:1px solid #c8dff2;color:var(--navy);background:#fff}.hero-points{display:flex;flex-wrap:wrap;gap:17px;margin-top:30px;color:#58728d;font-size:11px;font-weight:650}.hero-art{position:relative;min-height:460px;overflow:hidden;background:linear-gradient(145deg,#e8f5ff,#cce8fc 52%,#9cccf1)}.blueprint-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.3) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.3) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(90deg,transparent,#000 20%)}.orbit{position:absolute;border:1px solid rgba(24,126,205,.24);border-radius:50%;aspect-ratio:1}.orbit-one{width:470px;right:-70px;top:20px}.orbit-two{width:350px;right:-10px;top:80px}.ac-unit{position:absolute;top:23%;left:19%;width:65%;height:100px;border:1px solid #b6cfe4;border-radius:13px;background:linear-gradient(#fff,#eaf5fd);box-shadow:0 22px 30px #5c98c52a;transform:rotate(-4deg);padding:22px 18px}.ac-unit:before{content:"";position:absolute;left:6%;right:6%;top:12px;height:4px;background:#d5e8f7;border-radius:5px}.ac-line{height:2px;background:#b8d7ee;margin:7px 0;width:80%}.ac-unit span{font-size:8px;letter-spacing:2px;color:#7393ac}.bolt{position:absolute;left:44%;top:44%;font-size:100px;color:#1687df;text-shadow:0 7px 18px #1788df33}.art-label{position:absolute;background:#fff;color:var(--navy);border:1px solid #d1e7f8;border-radius:6px;padding:7px 10px;font-size:9px;font-weight:800;letter-spacing:1px;box-shadow:var(--shadow)}.label-a{top:17%;left:9%}.label-b{top:62%;right:9%}.label-c{bottom:12%;left:22%}.circuit{position:absolute;bottom:4%;left:4%;width:90%;fill:none;stroke:#fff;stroke-width:2}.circuit circle{fill:#1687df;stroke:#fff}.section{padding:76px clamp(22px,7vw,105px)}.section-heading{text-align:center;max-width:700px;margin:0 auto 34px}.section-heading h2,.about h2,.zone h2,.contact h2{font-size:clamp(27px,3vw,38px);line-height:1.2;letter-spacing:-1px;color:var(--navy);margin:0 0 14px}.section-heading>p:last-child,.zone p:not(.eyebrow),.about-copy>p:not(.eyebrow),.contact-copy>p:not(.eyebrow){color:var(--muted);font-size:14px}.services{background:linear-gradient(#fff,#f7fbff)}.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.service-card{background:#fff;border:1px solid #e2edf7;border-radius:var(--radius);padding:25px 23px 24px;box-shadow:0 7px 25px rgba(22,86,140,.04);transition:transform .2s,border .2s}.service-card:hover{transform:translateY(-4px);border-color:#acd8fa}.service-icon{width:49px;height:49px;border-radius:15px;display:grid;place-items:center;background:var(--sky);color:var(--blue);font-size:26px;font-weight:700;margin-bottom:21px}.card-kicker{font-size:9px;font-weight:800;letter-spacing:1px;color:#1687df;margin:0 0 5px}.service-card h3{font-size:19px;line-height:1.3;margin:0 0 11px;color:var(--navy)}.service-card>p:not(.card-kicker){font-size:13px;color:var(--muted);min-height:84px;margin:0 0 20px}.service-card>a{font-size:11px;color:var(--blue);font-weight:800}.service-card>a span{margin-left:5px}.about{display:grid;grid-template-columns:.65fr 1.35fr;align-items:center;gap:50px;background:#fff}.about-mark{display:grid;place-items:center;min-height:240px;background:linear-gradient(140deg,#edf7ff,#dcefff);border-radius:24px;position:relative;overflow:hidden}.about-mark:before,.about-mark:after{content:"";position:absolute;width:200px;height:200px;border:1px solid #b6daf5;border-radius:50%}.about-mark:after{width:280px;height:280px}.about-mark img{width:150px;height:150px;z-index:1;filter:drop-shadow(0 8px 15px #1d7bc52b)}.about-copy h2{max-width:500px}.about-copy>p:not(.eyebrow){max-width:720px}.trust-points{display:flex;gap:24px;flex-wrap:wrap;margin-top:27px}.trust-points span{display:flex;flex-direction:column;color:var(--blue);font-size:10px;font-weight:800;gap:4px}.trust-points b{font-size:12px;color:var(--navy)}.zone{margin:0 clamp(22px,7vw,105px) 75px;padding:35px 40px;border:1px solid #dbeaf7;border-radius:20px;background:linear-gradient(110deg,#f4faff,#e9f5ff);display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:25px;position:relative;overflow:hidden}.zone-icon{height:58px;width:58px;border-radius:16px;background:#fff;display:grid;place-items:center;color:var(--blue);font-size:34px}.zone h2{font-size:27px;margin-bottom:7px}.zone p:not(.eyebrow){margin:0;max-width:690px}.zone-decoration{font-size:80px;font-weight:900;color:#c5e2fa;line-height:1;letter-spacing:-7px}.contact{background:#f8fbff;display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:start}.contact-copy{padding-top:12px}.contact-copy h2{max-width:390px}.email-link{display:inline-flex;align-items:center;gap:11px;color:var(--navy);font-size:14px;font-weight:800;margin-top:16px}.email-link:first-letter{color:var(--blue)}.small-note{font-size:11px!important;color:#8394a6!important;margin-top:24px}.contact-form{background:#fff;border:1px solid #e1edf7;border-radius:17px;padding:27px;box-shadow:var(--shadow)}.contact-form label{display:block;color:#3b536d;font-size:11px;font-weight:800;margin-bottom:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.contact-form input,.contact-form select,.contact-form textarea{display:block;width:100%;margin-top:7px;padding:12px 13px;border:1px solid #dce8f2;border-radius:8px;background:#fbfdff;color:var(--ink);font:400 13px inherit;outline:none}.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:#5aafea;box-shadow:0 0 0 3px #1687df15}.contact-form textarea{resize:vertical}.contact-form button{font-family:inherit}.form-legal{font-size:10px;color:#7c8da0;margin:14px 0 0}.honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.footer{background:#102e50;color:#e7f3ff;display:flex;align-items:center;justify-content:space-between;gap:25px;padding:27px clamp(20px,5vw,78px);flex-wrap:wrap}.footer-brand{color:#fff;font-size:20px}.footer-brand small{color:#9ebbd6}.footer-links{display:flex;gap:22px;font-size:11px;color:#c2d8eb}.footer>p{font-size:10px;color:#a9c3da;margin:0}.footer-email a{text-decoration:underline;text-underline-offset:3px}.thanks{min-height:60vh;display:grid;place-items:center;text-align:center;padding:50px 20px}.thanks-card{max-width:560px;padding:45px;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}.thanks-card h1{color:var(--navy)}.thanks-card p{color:var(--muted)}
@media(max-width:1000px){.nav{gap:12px;font-size:11px}.brand{font-size:20px}.hero-copy{padding-left:5vw}.service-grid{grid-template-columns:repeat(2,1fr)}.service-card>p:not(.card-kicker){min-height:55px}.section{padding-top:60px;padding-bottom:60px}.contact{gap:30px}}
@media(max-width:760px){.site-header{height:72px;padding:0 18px}.brand{font-size:20px}.brand img{width:42px;height:42px}.menu-toggle{display:block;border:1px solid var(--line);background:white;border-radius:8px;padding:9px 12px;color:var(--navy);font-weight:700}.nav{display:none;position:absolute;top:71px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:15px 20px 20px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:12px 4px}.nav .nav-cta{text-align:center;margin-top:8px}.hero{grid-template-columns:1fr}.hero-copy{padding:53px 23px 35px}.hero h1{font-size:42px}.lead{font-size:14px}.hero-art{min-height:300px}.ac-unit{top:22%;height:78px}.bolt{font-size:70px}.section{padding:55px 20px}.section-heading h2,.about h2,.contact h2{font-size:30px}.service-grid{grid-template-columns:1fr;gap:13px}.service-card{padding:23px}.service-card>p:not(.card-kicker){min-height:0}.about{grid-template-columns:1fr;gap:28px}.about-mark{min-height:185px}.about-mark img{width:115px;height:115px}.trust-points{gap:17px}.zone{margin:0 20px 50px;padding:25px 22px;grid-template-columns:auto 1fr;gap:15px}.zone h2{font-size:23px}.zone-decoration{display:none}.zone-icon{width:48px;height:48px;font-size:28px}.contact{grid-template-columns:1fr;gap:25px}.contact-form{padding:20px}.form-row{grid-template-columns:1fr;gap:0}.footer{align-items:flex-start;flex-direction:column;gap:16px}.footer-links{flex-wrap:wrap}.footer>p{margin:0}}
/* Les cartes prennent toute la largeur disponible */
.service-grid.compact {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Carte seule : affichage horizontal pleine largeur */
.service-grid.compact .service-card:only-child {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto auto;
  column-gap: 28px;
  align-items: center;
  padding: 32px 40px;
}
.service-grid.compact .service-card:only-child .service-icon {
  grid-column: 1; grid-row: 1 / 4; margin: 0;
}
.service-grid.compact .service-card:only-child .card-kicker {
  grid-column: 2; grid-row: 1;
}
.service-grid.compact .service-card:only-child h3 {
  grid-column: 2; grid-row: 2; margin: 0 0 6px;
}
.service-grid.compact .service-card:only-child > p:not(.card-kicker) {
  grid-column: 2; grid-row: 3; min-height: 0; margin: 0;
}
.service-grid.compact .service-card:only-child > a {
  grid-column: 3; grid-row: 1 / 4;
}

.service-section.alt { background: #f4f8fd; }
section[id] { scroll-margin-top: 90px; }

/* Mobile : retour à l'affichage vertical */
@media (max-width: 760px) {
  .service-grid.compact .service-card:only-child {
    display: block;
    padding: 23px;
  }
  .service-grid.compact .service-card:only-child .service-icon {
    margin-bottom: 21px;
  }
  .service-grid.compact .service-card:only-child > p:not(.card-kicker) {
    margin: 0 0 20px;
  }
}
/* Zones bleu foncé décoratives */
.service-section,
.contact {
  position: relative;
  overflow: hidden;
}
.service-section > *,
.contact > * {
  position: relative;
  z-index: 1;
}

/* Cercle en haut à droite */
.service-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: var(--navy);
}

/* Petit bloc arrondi en bas à gauche */
.service-section::after {
  content: "";
  position: absolute;
  bottom: 28px;
  left: -40px;
  width: 140px;
  height: 56px;
  border-radius: 14px;
  background: var(--navy);
  transform: rotate(-8deg);
  opacity: .9;
}

/* Section Climatisation : on inverse les positions */
.service-section.alt::before {
  top: auto;
  bottom: -90px;
  right: auto;
  left: -70px;
  width: 260px;
  height: 260px;
}
.service-section.alt::after {
  bottom: auto;
  top: 36px;
  left: auto;
  right: -30px;
  transform: rotate(8deg);
}

/* Contact : une zone en haut à droite */
.contact::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -70px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: var(--navy);
}

/* Mobile : formes plus petites */
@media (max-width: 760px) {
  .service-section::before,
  .contact::before { width: 130px; height: 130px; top: -50px; right: -40px; }
  .service-section.alt::before { width: 150px; height: 150px; bottom: -60px; left: -50px; top: auto; right: auto; }
  .service-section::after { width: 90px; height: 36px; }
}
/* Bouton soleil / lune */
.theme-toggle{position:relative;display:inline-flex;align-items:center;width:62px;height:32px;padding:0;border:1px solid var(--line);border-radius:999px;background:var(--sky);cursor:pointer;flex-shrink:0}
.theme-toggle .ti{position:relative;z-index:1;flex:1;text-align:center;font-size:14px;line-height:30px}
.theme-toggle .knob{position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(16,47,84,.25);transition:transform .25s,background .25s}
html[data-theme="dark"] .theme-toggle .knob{transform:translateX(30px);background:#1687df}

/* ===== MODE SOMBRE ===== */
html[data-theme="dark"]{color-scheme:dark;--navy:#e6f1fb;--ink:#d3e2f0;--muted:#9db2c7;--line:#223a56;--sky:#13314f;--pale:#0f1c2d;--shadow:0 14px 40px rgba(0,0,0,.35)}
html[data-theme="dark"] body{background:#0a1422}
html[data-theme="dark"] .site-header{background:rgba(10,20,34,.95);border-bottom-color:#1c3250}
html[data-theme="dark"] .nav{color:#b9cbdd}
html[data-theme="dark"] .hero{background:linear-gradient(120deg,#0a1422 0%,#0d1b2e 60%,#10243b 100%);border-bottom-color:var(--line)}
html[data-theme="dark"] .lead,html[data-theme="dark"] .hero-points{color:#9db2c7}
html[data-theme="dark"] .secondary{background:#12263d;border-color:#2a4767;color:var(--navy)}
html[data-theme="dark"] .hero-art{background:linear-gradient(145deg,#10243b,#0f3050 52%,#12446f)}
html[data-theme="dark"] .blueprint-grid{background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px)}
html[data-theme="dark"] .ac-unit{background:linear-gradient(#1a3350,#132a44);border-color:#2f5077;box-shadow:0 22px 30px rgba(0,0,0,.35)}
html[data-theme="dark"] .ac-unit:before{background:#2b4a6c}
html[data-theme="dark"] .ac-line{background:#35597f}
html[data-theme="dark"] .ac-unit span{color:#8fb0cf}
html[data-theme="dark"] .art-label{background:#12263d;border-color:#2a4767;color:var(--navy)}
html[data-theme="dark"] .circuit{stroke:#4f7fae}
html[data-theme="dark"] .services{background:linear-gradient(#0a1422,#0c192a)}
html[data-theme="dark"] .service-section.alt{background:#0d1a2b}
html[data-theme="dark"] .service-card{background:#10223a;border-color:#1f3a58}
html[data-theme="dark"] .service-card:hover{border-color:#2f6ea6}
html[data-theme="dark"] .about{background:#0a1422}
html[data-theme="dark"] .about-mark{background:linear-gradient(140deg,#10243b,#0f2d4a)}
html[data-theme="dark"] .about-mark:before,html[data-theme="dark"] .about-mark:after{border-color:#25507a}
html[data-theme="dark"] .zone{background:linear-gradient(110deg,#0f2036,#0e2a44);border-color:#1f3a58}
html[data-theme="dark"] .zone-icon{background:#12263d}
html[data-theme="dark"] .zone-decoration{color:#1c3f63}
html[data-theme="dark"] .contact{background:#0c192a}
html[data-theme="dark"] .contact-form{background:#10223a;border-color:#1f3a58}
html[data-theme="dark"] .contact-form label{color:#b9cbdd}
html[data-theme="dark"] .contact-form input,
html[data-theme="dark"] .contact-form select,
html[data-theme="dark"] .contact-form textarea{background:#0b1a2c;border-color:#264463;color:var(--ink)}
html[data-theme="dark"] .menu-toggle{background:#12263d;color:var(--navy)}
html[data-theme="dark"] .thanks-card{background:#10223a}

/* Zones décoratives : un bleu visible sur fond sombre */
html[data-theme="dark"] .service-section::before,
html[data-theme="dark"] .service-section::after,
html[data-theme="dark"] .contact::before{background:#14395f}

@media(max-width:760px){
  html[data-theme="dark"] .nav{background:#0a1422;border-bottom-color:#1c3250}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}