:root{--paper:#f8f7f2;--ink:#173332;--dark:#173330;--muted:#586460;--accent:#8b684d;--line:#d8d8ce;--card:#fffefa;--tint:#eeefe8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.6}a{color:inherit}img{max-width:100%;display:block}button,input,textarea{font:inherit}.shell{max-width:1180px;margin:auto;padding:0 28px}.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:white;padding:8px;z-index:20}.top{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:10}.nav{min-height:86px;display:flex;align-items:center;gap:24px;justify-content:space-between}.brand{font-size:1.16rem;letter-spacing:.22em;font-weight:600;text-decoration:none;white-space:nowrap}.brand small{display:block;font-size:.58rem;letter-spacing:.29em;font-weight:400;margin-top:2px}.navlinks{display:flex;align-items:center;gap:28px;font-size:.84rem;letter-spacing:.06em}.navlinks a{text-decoration:none}.navlinks a:hover,.navlinks a:focus-visible{text-decoration:underline;text-underline-offset:5px}.button,.nav-cta{display:inline-flex;justify-content:center;align-items:center;padding:13px 21px;background:var(--ink);color:var(--paper);text-decoration:none;font-size:.85rem;letter-spacing:.045em;border:1px solid var(--ink);border-radius:2px;transition:transform .2s,background .2s}.button:hover,.nav-cta:hover{transform:translateY(-2px);background:var(--accent);border-color:var(--accent)}.button.alt{background:transparent;color:var(--ink)}.button.alt:hover{color:var(--paper)}.eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.27em;color:var(--accent);font-weight:700}.hero{display:grid;grid-template-columns:1.03fr .97fr;min-height:635px}.hero-copy{padding:90px 6vw 70px max(28px,calc((100vw - 1180px)/2 + 28px));display:flex;flex-direction:column;justify-content:center}.hero h1{font-size:clamp(2.8rem,5.2vw,5.8rem);font-weight:400;line-height:1.06;letter-spacing:-.045em;margin:20px 0 22px}.hero p{max-width:540px;font-size:1.07rem;color:var(--muted);margin:0 0 29px}.actions{display:flex;gap:12px;flex-wrap:wrap}.hero-media{background:var(--dark) url('hero.jpg') center/cover;min-height:450px;position:relative}.hero-media:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 35%,rgba(0,0,0,.2))}.hero-media .caption{position:absolute;z-index:1;color:#fff;bottom:24px;right:28px;font-size:.72rem;letter-spacing:.18em;text-transform:uppercase}.marquee{border-block:1px solid var(--line);padding:15px 0;color:var(--accent);font-size:.7rem;letter-spacing:.21em;text-transform:uppercase}.marquee .shell{display:flex;justify-content:space-between;gap:20px}.section{padding:98px 0}.section-header{display:flex;justify-content:space-between;align-items:end;gap:32px;margin-bottom:38px}.section h2,.article h1{font-size:clamp(2.2rem,4vw,4.1rem);font-weight:400;line-height:1.13;letter-spacing:-.04em;margin:12px 0}.section-header p{max-width:430px;color:var(--muted);margin:0}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.service{background:var(--card);border:1px solid var(--line);min-height:260px;padding:30px;display:flex;flex-direction:column}.service .num{color:var(--accent);font-size:.8rem;letter-spacing:.2em}.service h3{font-size:1.45rem;font-weight:400;margin:auto 0 8px}.service p{color:var(--muted);font-size:.94rem;margin:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--dark);color:#fff}.split-copy{padding:80px max(28px,calc((100vw - 1180px)/2 + 28px)) 80px 8vw;max-width:780px}.split-copy h2{font-size:clamp(2rem,3.5vw,3.5rem);line-height:1.14;font-weight:400;letter-spacing:-.03em}.split-copy p{color:#e0ddd5}.split-photo{min-height:420px;background:url('hero.jpg') center/cover}.step{border-top:1px solid var(--line);padding:22px 0;display:grid;grid-template-columns:55px 1fr;gap:18px}.step span{color:var(--accent)}.step h3{margin:0;font-size:1.13rem}.step p{margin:4px 0 0;color:var(--muted)}.advice{background:var(--tint)}.advice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.advice-card{border-top:2px solid var(--accent);padding:25px 10px 10px 0;text-decoration:none;display:block}.advice-card h3{font-size:1.35rem;font-weight:400;line-height:1.3}.advice-card p{font-size:.94rem;color:var(--muted)}.advice-card .more{font-size:.83rem;color:var(--accent);text-decoration:underline;text-underline-offset:4px}.contact{background:var(--ink);color:var(--paper);padding:76px 0}.contact-row{display:flex;justify-content:space-between;align-items:center;gap:36px}.contact h2{font-size:clamp(2rem,3.7vw,3.9rem);font-weight:400;line-height:1.1;max-width:690px;margin:12px 0}.contact p{opacity:.82;max-width:640px}.contact .button{background:var(--paper);color:var(--ink);border-color:var(--paper);white-space:nowrap}.contact .button:hover{background:var(--accent);color:#fff;border-color:var(--accent)}footer{padding:34px 0;background:var(--dark);color:#ece9e2;font-size:.8rem}footer .shell{display:flex;gap:20px;justify-content:space-between;flex-wrap:wrap}footer a{color:inherit}.article{padding:80px 0 110px}.article .intro{font-size:1.12rem;color:var(--muted);max-width:770px}.prose{max-width:770px}.prose h2{font-size:2rem;font-weight:400;line-height:1.2;margin:60px 0 16px}.prose h3{font-weight:600;font-size:1.13rem;margin-top:30px}.prose p,.prose li{color:var(--muted)}.prose table{border-collapse:collapse;width:100%;margin:26px 0}.prose th,.prose td{text-align:left;padding:14px 10px;border-bottom:1px solid var(--line);vertical-align:top}.prose th{color:var(--ink)}.prose details{border-bottom:1px solid var(--line);padding:14px 0}.prose summary{cursor:pointer;font-weight:600}.note{border-left:3px solid var(--accent);padding:15px 22px;background:var(--tint);font-size:.92rem}.resource{padding:20px;background:var(--tint);margin-top:48px;font-size:.78rem}.resource a{overflow-wrap:anywhere}.micro{font-size:.75rem;color:var(--muted)}@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-copy{padding:70px 28px}.hero-media{min-height:420px}.navlinks{gap:14px}.split{grid-template-columns:1fr}.split-copy{padding:55px 28px}.split-photo{min-height:270px}.section{padding:75px 0}}@media(max-width:650px){.shell{padding:0 20px}.nav{min-height:73px;flex-wrap:wrap;padding:15px 0}.navlinks{width:100%;justify-content:space-between;font-size:.75rem;gap:8px;overflow:auto}.nav-cta{padding:8px 10px}.hero-copy{padding:68px 20px}.hero-media{min-height:290px}.hero h1{font-size:clamp(2.6rem,12vw,4rem)}.section-header{display:block}.grid3,.advice-grid{grid-template-columns:1fr}.service{min-height:185px}.marquee .shell{flex-wrap:wrap;gap:8px}.contact-row{display:block}.contact .button{white-space:normal;margin-top:16px}.prose table{font-size:.82rem}.prose th,.prose td{padding:10px 5px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.hero-mark{width:124px;height:75px;object-fit:contain;object-position:left center;margin-bottom:18px;mix-blend-mode:multiply}.hero-mark.pyr{width:74px;height:110px;margin-bottom:0}

/* Navigation étroite et accueil retravaillé */
.mobile-nav{display:none}.hero-media{background-image:url('hero.jpg');background-position:center;background-size:cover}.hero-copy{position:relative}.hero h1{max-width:740px}.brand{font-size:1.04rem;letter-spacing:.16em}.brand small{letter-spacing:.19em}.top{box-shadow:0 1px 0 var(--line)}
@media(max-width:750px){
 .nav{flex-wrap:nowrap;min-height:72px;padding:10px 0}.navlinks{display:none}.brand{font-size:.95rem;letter-spacing:.13em;line-height:1.2;max-width:calc(100% - 92px);overflow:hidden;text-overflow:ellipsis}.brand small{font-size:.53rem;letter-spacing:.12em;margin-top:5px}.mobile-nav{display:block;position:relative;flex:none}.mobile-nav summary{list-style:none;cursor:pointer;border:1px solid var(--line);padding:8px 13px;border-radius:2px;font-size:.85rem}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-links{position:absolute;right:0;top:calc(100% + 10px);z-index:20;min-width:220px;background:var(--paper);color:var(--ink);border:1px solid var(--line);box-shadow:0 16px 30px #0002;padding:9px}.mobile-links a{display:block;text-decoration:none;padding:10px 12px;border-bottom:1px solid var(--line)}.mobile-links a:last-child{border:0}.mobile-links a:focus-visible,.mobile-links a:hover{background:var(--tint)}
 .hero{display:flex;flex-direction:column;min-height:0}.hero-media{order:0;min-height:235px}.hero-copy{order:1;padding:38px 22px 50px}.hero-mark{display:none}.hero h1{font-size:clamp(2.35rem,9.2vw,3.45rem);line-height:1.11;margin:15px 0 16px;letter-spacing:-.035em}.desktop-break{display:none}.hero p{font-size:1rem;line-height:1.53;margin:0 0 22px}.hero .actions{gap:10px}.hero .button{width:100%;padding:12px 14px}.hero-media .caption{font-size:.6rem;right:18px;bottom:14px}.marquee .shell{font-size:.64rem;line-height:1.4;gap:8px 14px}.section{padding:62px 0}.section h2{font-size:2.3rem}.section-header{margin-bottom:25px}.service{padding:23px;min-height:175px}.contact{padding:65px 0}
}
@media(max-width:360px){.brand{font-size:.84rem}.brand small{font-size:.48rem}.hero h1{font-size:2.25rem}}

/* Aéro Terra : minéral, contraste plus franc sur mobile */
.hero-media{background-color:#1a3936}.service{border-top:3px solid #8b684d}
@media(max-width:750px){.hero-copy{background:#e9eee8}.hero-media{min-height:250px}.hero h1{color:#173332}}

.brand .accent-word{color:var(--accent)}

/* Identité intégrée et quatre chapitres */
.top{background:#f8f7f2}.brand{display:inline-flex;align-items:center;gap:13px;font-size:1.48rem;letter-spacing:.13em;line-height:1.12;flex:none}.brand-icon{width:108px;height:69px;object-fit:contain;flex:none}.brand-text{display:block}.brand small{font-size:.61rem;letter-spacing:.13em;margin-top:8px;white-space:nowrap}.material-nav{background:#203d3a;color:#fff}.material-nav-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.material-nav a{padding:23px 16px;border-right:1px solid #617772;text-decoration:none;font-size:.85rem;line-height:1.3;display:flex;flex-direction:column;gap:6px;transition:background .2s}.material-nav a:first-child{border-left:1px solid #617772}.material-nav a span{color:#d6b99f;font-size:.73rem;letter-spacing:.2em}.material-nav a:hover,.material-nav a:focus-visible{background:#345d55;outline-offset:-3px}.material-chapter{scroll-margin-top:105px;display:grid;grid-template-columns:26% 1fr;gap:42px;padding:44px 0;border-top:1px solid var(--line)}.material-chapter:last-child{border-bottom:1px solid var(--line)}.chapter-index{font-size:.78rem;font-weight:700;letter-spacing:.19em;color:#8b684d;padding-top:12px}.chapter-content h3{font-size:clamp(1.75rem,2.7vw,2.7rem);font-weight:400;line-height:1.18;letter-spacing:-.025em;margin:0 0 17px}.chapter-content>p{max-width:740px;color:var(--muted);font-size:1rem;margin:0 0 19px}.chapter-points{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:25px 0}.chapter-points>div{padding:17px 20px;border-left:2px solid #9c7657;background:#eef0e8}.chapter-points strong{font-size:.81rem;text-transform:uppercase;letter-spacing:.13em;color:#173332}.chapter-points p{font-size:.91rem;color:var(--muted);margin:6px 0 0}.chapter-content>a{color:#285b52;text-underline-offset:5px;font-size:.88rem;font-weight:600}.chapter-content .chapter-caution{font-size:.88rem;color:#6d5a4b;margin:0 0 19px}
@media(max-width:1050px){.brand{font-size:1.15rem;gap:8px}.brand-icon{width:82px;height:56px}.brand small{font-size:.49rem;letter-spacing:.09em}.navlinks{gap:16px}}
@media(max-width:750px){.brand{font-size:1.05rem;gap:6px;max-width:calc(100% - 80px);letter-spacing:.08em}.brand-icon{width:69px;height:43px}.brand small{font-size:.46rem;letter-spacing:.05em;margin-top:5px}.material-nav-grid{grid-template-columns:1fr 1fr;padding:0}.material-nav a{border-bottom:1px solid #617772;padding:16px 13px;font-size:.78rem;min-height:76px}.material-nav a:first-child{border-left:0}.material-nav a:nth-child(2n){border-right:0}.material-chapter{grid-template-columns:1fr;gap:8px;padding:32px 0;scroll-margin-top:85px}.chapter-index{padding:0}.chapter-points{grid-template-columns:1fr;gap:9px}.chapter-content h3{font-size:2rem}.chapters{padding-top:70px}}
@media(max-width:360px){.brand{font-size:.94rem}.brand-icon{width:57px;height:39px}.brand small{font-size:.42rem}.material-nav a{font-size:.71rem}}

/* Ajustement de la signature et des quatre raccourcis */
.top{background:#f8f7f2}.brand{gap:12px;font-size:2.55rem;font-weight:400;letter-spacing:.12em;line-height:1;max-width:none}.brand-icon{width:117px;height:68px;background:transparent}.brand-text{white-space:nowrap}.nav{min-height:96px}.navlinks{gap:23px}.hero-media{background-position:25% center}.hero-media:after{background:linear-gradient(0deg,rgba(9,24,22,.72) 0%,rgba(9,24,22,.15) 42%,transparent 72%)}.hero-descriptor{position:absolute;z-index:1;left:33px;bottom:30px;color:#fff;font-size:1.04rem;line-height:1.55;letter-spacing:.25em;font-weight:500;text-shadow:0 2px 8px #0009}.material-nav{background:#f8f7f2;color:#1b403c;border-top:1px solid #d8d8ce;border-bottom:1px solid #d8d8ce}.material-nav-grid{display:flex;justify-content:space-between;align-items:center;gap:22px}.material-nav a,.material-nav a:first-child{display:block;min-height:0;padding:18px 0;border:0;background:transparent;color:#254744;font-size:.77rem;line-height:1.35;text-decoration:none;white-space:nowrap;letter-spacing:.03em}.material-nav a span{display:none}.material-nav a:hover,.material-nav a:focus-visible{background:transparent;color:#80644f;text-decoration:underline;text-underline-offset:5px;outline-offset:4px}
@media(max-width:1100px){.brand{font-size:2.05rem}.brand-icon{width:95px;height:59px}.navlinks{gap:15px}.material-nav a{white-space:normal}}
@media(max-width:750px){.nav{min-height:78px;flex-wrap:nowrap}.brand{font-size:1.45rem;gap:7px;letter-spacing:.055em;max-width:calc(100% - 68px)}.brand-icon{width:70px;height:45px;flex:none}.brand-text{overflow:visible}.hero-media{background-position:21% center}.hero-descriptor{left:21px;bottom:18px;font-size:.75rem;line-height:1.5;letter-spacing:.18em}.material-nav-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;padding:10px 20px}.material-nav a,.material-nav a:first-child{padding:10px 0;white-space:normal;font-size:.74rem;border:0;min-height:0}}
@media(max-width:360px){.brand{font-size:1.32rem}.brand-icon{width:59px;height:39px}.hero-descriptor{font-size:.67rem}}