/*
    Voletroulantrnovation — système CSS éditorial
    Objectif : lisibilité, hiérarchie SEO, mobile-first, conversion.
*/
:root{
    --primary:#0077B6;
    --primary-dark:#005f92;
    --secondary:#90E0EF;
    --accent:#00B4D8;
    --ink:#102033;
    --ink-soft:#24384d;
    --muted:#5b6b7d;
    --muted-strong:#41566a;
    --bg:#f6fbfe;
    --white:#ffffff;
    --line:#dcecf3;
    --shadow:0 24px 70px rgba(0,54,86,.14);
    --radius:24px;
    --radius-sm:16px;
    --container:1180px;
    --font-body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-heading:"Manrope","Inter",system-ui,sans-serif;
    --text-xs:clamp(.78rem,.74rem + .14vw,.86rem);
    --text-sm:clamp(.88rem,.83rem + .18vw,.98rem);
    --text-base:clamp(1rem,.96rem + .22vw,1.125rem);
    --text-md:clamp(1.08rem,1rem + .36vw,1.28rem);
    --text-lg:clamp(1.18rem,1.04rem + .62vw,1.56rem);
    --h1:clamp(2.55rem,1.72rem + 4.15vw,4.9rem);
    --h2:clamp(2rem,1.48rem + 2.38vw,3.3rem);
    --h3:clamp(1.35rem,1.13rem + .92vw,1.9rem);
    --h4:clamp(1.12rem,1.02rem + .42vw,1.36rem);
    --lead:clamp(1.12rem,1rem + .7vw,1.42rem);
    --measure:72ch;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;text-size-adjust:100%;-webkit-text-size-adjust:100%}
body{
    margin:0;
    font-family:var(--font-body);
    font-size:var(--text-base);
    font-weight:450;
    color:var(--ink);
    background:linear-gradient(180deg,#ffffff 0%,var(--bg) 52%,#ffffff 100%);
    line-height:1.72;
    text-rendering:optimizeLegibility;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
img{height:auto}
::selection{background:var(--secondary);color:var(--ink)}

/* Typographie globale : claire, scalable, SEO-friendly */
h1,h2,h3,h4,h5,h6{
    font-family:var(--font-heading);
    color:var(--ink);
    font-weight:850;
    letter-spacing:-.045em;
    line-height:1.08;
    text-wrap:balance;
    margin:0 0 .55em;
}
h1{
    font-size:var(--h1);
    line-height:.98;
    letter-spacing:-.075em;
    max-width:12.6ch;
}
h2{
    font-size:var(--h2);
    letter-spacing:-.062em;
    max-width:17ch;
}
h3{
    font-size:var(--h3);
    letter-spacing:-.045em;
    line-height:1.16;
}
h4{
    font-size:var(--h4);
    letter-spacing:-.028em;
    line-height:1.22;
}
p{
    margin:0 0 1.05em;
    color:var(--muted-strong);
    max-width:var(--measure);
    text-wrap:pretty;
}
p:last-child{margin-bottom:0}
strong{color:var(--ink);font-weight:850}
ul,ol{font-size:var(--text-base);line-height:1.68}
li::marker{color:var(--primary)}
.subheading,.section-kicker{
    display:block;
    font-family:var(--font-heading);
    font-size:var(--text-lg);
    font-weight:750;
    line-height:1.35;
    letter-spacing:-.025em;
    color:var(--ink-soft);
    max-width:64ch;
    margin:.35rem 0 1.2rem;
}
.lead,.hero p,.page-hero p{
    font-size:var(--lead);
    line-height:1.58;
    color:#344c62;
    font-weight:500;
    max-width:760px;
}
.caption,.microcopy{
    font-size:var(--text-sm);
    line-height:1.55;
    color:var(--muted);
}
.container{width:min(var(--container),calc(100% - 32px));margin-inline:auto}
.narrow{max-width:850px}.skip-link{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:10px 14px;border-radius:10px;z-index:999}.skip-link:focus{left:12px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(220,236,243,.82)}
.nav-wrap{display:flex;align-items:center;gap:20px;min-height:82px}.brand{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-heading);font-weight:850;letter-spacing:-.03em}.brand strong{font-size:clamp(1rem,.92rem + .36vw,1.22rem)}.brand small{display:block;font-size:12px;color:var(--muted);font-weight:750;letter-spacing:0;line-height:1.2}.brand-mark{display:grid;place-items:center;width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 12px 30px rgba(0,119,182,.24)}
.main-nav{margin-left:auto;display:flex;align-items:center;gap:8px}.main-nav a{font-weight:800;font-size:var(--text-sm);color:#365166;padding:10px 12px;border-radius:999px;transition:.22s;line-height:1.2}.main-nav a:hover,.main-nav a.active{background:#eaf8fc;color:var(--primary-dark)}
.nav-toggle{display:none;margin-left:auto;border:0;background:#eaf8fc;border-radius:12px;width:44px;height:44px;padding:10px}.nav-toggle span{display:block;height:2px;background:var(--primary);margin:5px 0;border-radius:99px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-family:var(--font-heading);font-size:var(--text-sm);font-weight:900;line-height:1.2;padding:14px 22px;box-shadow:0 16px 34px rgba(0,119,182,.26);cursor:pointer;transition:transform .22s,box-shadow .22s}.btn:hover{transform:translateY(-2px);box-shadow:0 22px 42px rgba(0,119,182,.32)}.btn-small{padding:10px 15px;font-size:14px}.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--line);box-shadow:none}.btn-ghost:hover{box-shadow:0 12px 28px rgba(0,54,86,.1)}
.hero{position:relative;overflow:hidden;padding:88px 0 128px}.hero:before{content:"";position:absolute;inset:-20% -10% auto auto;width:600px;height:600px;background:radial-gradient(circle,var(--secondary),transparent 62%);opacity:.45}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}.hero h1,.page-hero h1{margin:14px 0 22px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary-dark);background:#eaf8fc;border:1px solid #d6f2f9;border-radius:999px;padding:8px 12px;font-family:var(--font-heading);font-weight:900;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.09em;line-height:1.25}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0}.trust-row{display:flex;flex-wrap:wrap;gap:12px}.trust-row span{background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 14px;color:var(--muted);box-shadow:0 10px 30px rgba(0,54,86,.06);font-size:var(--text-sm);line-height:1.35}.trust-row strong{color:var(--primary);font-family:var(--font-heading);font-size:clamp(1.28rem,1.12rem + .7vw,1.62rem)}
.hero-visual{min-height:500px;display:grid;place-items:center}.shutter-card{position:relative;width:min(420px,100%);aspect-ratio:4/4.5;border-radius:36px;background:linear-gradient(145deg,#effbff,#ffffff);box-shadow:var(--shadow);border:1px solid #dff3f8;display:grid;place-items:center}.window-frame{width:72%;height:68%;border:16px solid #15324a;border-radius:28px;background:linear-gradient(180deg,#c9f4ff,#fff);padding:28px;display:flex;flex-direction:column;gap:15px;box-shadow:inset 0 0 0 8px rgba(255,255,255,.65)}.window-frame span{height:22px;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--secondary));box-shadow:0 8px 18px rgba(0,119,182,.16)}.floating-note{position:absolute;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:11px 14px;font-family:var(--font-heading);font-weight:850;box-shadow:0 14px 32px rgba(0,54,86,.13);font-size:var(--text-sm);line-height:1.25}.note-one{top:52px;left:-32px}.note-two{right:-38px;top:210px}.note-three{left:28px;bottom:48px}
.section{padding:82px 0}.section-overlap{margin-top:-90px;padding-top:0;position:relative;z-index:2}.tinted{background:linear-gradient(135deg,#eaf8fc,#ffffff);border-block:1px solid #def0f6}.quick-grid,.content-grid{display:grid;gap:22px}.quick-grid{grid-template-columns:repeat(4,1fr)}.content-grid.three{grid-template-columns:repeat(3,1fr)}.content-grid.two{grid-template-columns:repeat(2,1fr)}.quick-card,.article-card,.info-panel,.danger-box,.diagnostic-card,.sticky-box,.price-table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 18px 44px rgba(0,54,86,.08)}.quick-card{transition:.22s}.quick-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.quick-card i,.article-card i{color:var(--primary);width:30px;height:30px}.quick-card h2,.article-card h3,.article-card h2{margin:12px 0 10px;max-width:none}.quick-card h2{font-size:clamp(1.28rem,1.1rem + .8vw,1.68rem);line-height:1.13}.article-card h2{font-size:clamp(1.45rem,1.2rem + 1.05vw,2rem);line-height:1.12}.quick-card p,.article-card p{color:var(--muted);margin:0;font-size:var(--text-sm);line-height:1.62}.article-card p + p{margin-top:12px}.highlight{border-top:5px solid var(--primary)}
.split-layout{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}.split-layout.reverse{grid-template-columns:.9fr 1.1fr}.section-heading{text-align:center;max-width:820px;margin:0 auto 34px}.section-heading h2,.split-layout h2,.guide-layout h2,.cta-band h2,.diagnostic-layout h2{margin:12px auto 14px}.split-layout h2,.guide-layout h2,.diagnostic-layout h2{margin-left:0;margin-right:0}.section-heading p,.split-layout p,.rich-content p,.cta-band p{color:var(--muted-strong)}.section-heading p{margin-inline:auto;font-size:var(--text-md);line-height:1.62}.check-list{padding:0;margin:24px 0;list-style:none}.check-list li{position:relative;margin:12px 0;padding-left:34px;color:var(--muted-strong);line-height:1.62}.check-list li:before{content:"✓";position:absolute;left:0;top:.08em;color:#fff;background:var(--primary);width:24px;height:24px;display:grid;place-items:center;border-radius:50%;font-weight:900;font-size:13px}.number-list{padding-left:22px}.number-list li{margin:12px 0;color:#42586d;line-height:1.62}.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-family:var(--font-heading);font-weight:900;line-height:1.3}.stacked-cards{display:grid;gap:16px}.stacked-cards article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 14px 32px rgba(0,54,86,.07)}.stacked-cards span{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:14px;background:#eaf8fc;color:var(--primary);font-family:var(--font-heading);font-weight:900}.stacked-cards h3{margin-top:14px;margin-bottom:8px}.stacked-cards p{font-size:var(--text-sm);line-height:1.62;color:var(--muted)}.page-hero{padding:74px 0 52px;background:radial-gradient(circle at top right,#dff8ff,transparent 35%)}
.guide-layout{display:grid;grid-template-columns:280px 1fr;gap:36px;align-items:start}.sticky-box{position:sticky;top:104px}.sticky-box h2{font-size:clamp(1.28rem,1.12rem + .72vw,1.7rem);letter-spacing:-.04em;max-width:none}.sticky-box a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-family:var(--font-heading);font-weight:850;color:var(--primary);font-size:var(--text-sm);line-height:1.35}.rich-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:0 18px 44px rgba(0,54,86,.07)}.rich-content h2{font-size:clamp(1.72rem,1.32rem + 1.78vw,2.55rem);line-height:1.08;margin-top:36px;margin-bottom:14px;max-width:18ch}.rich-content h2:first-child{margin-top:6px}.rich-content h3{margin-top:28px;margin-bottom:10px}.rich-content p{font-size:var(--text-base);line-height:1.78}.rich-content p + p{margin-top:.15rem}.diagnostic-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;align-items:start}.diagnostic-card label{display:block;font-family:var(--font-heading);font-weight:900;margin-bottom:16px;color:var(--ink);line-height:1.32}.diagnostic-card select{width:100%;margin-top:8px;border:1px solid var(--line);border-radius:14px;padding:14px;background:#f8fcfe;color:var(--ink);font:inherit}.diagnostic-result{display:none;margin-top:18px;padding:20px;border-radius:18px;background:#eaf8fc;border:1px solid #d1edf5}.diagnostic-result.is-visible{display:block}.diagnostic-result strong,.diagnostic-result span{display:block}.diagnostic-result span{color:var(--primary);font-family:var(--font-heading);font-weight:900;margin:4px 0}.diagnostic-result a{font-weight:900;color:var(--primary)}.diagnostic-contact-layout{display:grid;grid-template-columns:.92fr 1.08fr;gap:42px;align-items:start}.contact-form{position:relative;border-top:5px solid var(--primary)}.contact-form input,.contact-form select,.contact-form textarea{width:100%;margin-top:8px;border:1px solid var(--line);border-radius:14px;padding:14px 15px;background:#f8fcfe;color:var(--ink);font:inherit;line-height:1.45;transition:border-color .22s,box-shadow .22s,background .22s}.contact-form textarea{resize:vertical;min-height:150px}.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:0;border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(0,119,182,.12)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.hidden-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.form-status{border-radius:18px;padding:18px 20px;margin:0 0 20px;border:1px solid;line-height:1.55}.form-status strong,.form-status span{display:block}.form-status.success{background:#ecfff7;border-color:#b8efd6;color:#146b43}.form-status.success strong{color:#0d5635}.form-status.error{background:#fff5f2;border-color:#ffc9bd;color:#8c2f1d}.form-status.error strong{color:#7a2617}.form-status ul{margin:8px 0 0;padding-left:18px;font-size:var(--text-sm)}.contact-form .microcopy{margin-top:16px}.danger-box{background:#fff6f0;border-color:#ffd8be}.danger-box h2,.danger-box h3{max-width:none}.tech-orbit{position:relative;min-height:360px;border-radius:36px;background:linear-gradient(135deg,#eaf8fc,#fff);box-shadow:var(--shadow);display:grid;place-items:center}.tech-orbit span{display:grid;place-items:center;width:150px;height:150px;border-radius:50%;background:var(--primary);color:#fff;font-family:var(--font-heading);font-weight:900;font-size:clamp(1.42rem,1.18rem + 1vw,1.9rem);box-shadow:0 20px 45px rgba(0,119,182,.25)}.tech-orbit i{position:absolute;color:var(--primary);background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;width:70px;height:70px;box-shadow:0 14px 32px rgba(0,54,86,.09)}.tech-orbit i:nth-child(2){top:44px;left:80px}.tech-orbit i:nth-child(3){top:54px;right:82px}.tech-orbit i:nth-child(4){bottom:50px;left:96px}.tech-orbit i:nth-child(5){bottom:58px;right:94px}.cta-band{display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(135deg,var(--ink),#16415f);color:#fff;border-radius:32px;padding:34px;box-shadow:var(--shadow)}.cta-band h2{color:#fff;max-width:15ch}.cta-band p{color:#d8ecf4}.price-table-wrap{overflow:auto}.price-table{width:100%;border-collapse:collapse;min-width:720px;font-size:var(--text-sm);line-height:1.55}.price-table caption{text-align:left;font-family:var(--font-heading);font-weight:900;font-size:var(--text-lg);letter-spacing:-.035em;margin-bottom:14px;color:var(--ink)}.price-table th,.price-table td{padding:16px;border-bottom:1px solid var(--line);text-align:left}.price-table th{background:#eaf8fc;color:var(--primary-dark);font-family:var(--font-heading);font-weight:900}.price-table td:nth-child(2){font-weight:900;color:var(--primary)}
.partner-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.partner-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:0 18px 44px rgba(0,54,86,.08);display:flex;flex-direction:column;gap:16px;transition:.22s}.partner-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.partner-card h2{font-size:clamp(1.42rem,1.14rem + 1.1vw,2.05rem);max-width:none;margin:0}.partner-card p{font-size:var(--text-sm);color:var(--muted);line-height:1.62}.partner-badge{display:inline-flex;width:max-content;border-radius:999px;background:#eaf8fc;border:1px solid #d6f2f9;color:var(--primary-dark);font-family:var(--font-heading);font-weight:900;font-size:var(--text-xs);padding:8px 12px;letter-spacing:.03em}.partner-meta-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.partner-meta-list li{color:var(--muted-strong);font-size:var(--text-sm);line-height:1.55}.partner-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto}.partner-hero h1{max-width:15ch}.partner-layout{display:grid;grid-template-columns:320px 1fr;gap:36px;align-items:start}.partner-sidebar .sticky-box{display:grid;gap:18px}.partner-details{display:grid;grid-template-columns:1fr;gap:6px;margin:0}.partner-details dt{font-family:var(--font-heading);font-weight:900;color:var(--ink);font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.08em}.partner-details dd{margin:0 0 12px;color:var(--muted-strong);line-height:1.45}.partner-details a{color:var(--primary);font-weight:900}.partner-map-link{margin-top:-8px}.address-card{background:linear-gradient(135deg,#eaf8fc,#fff);border:1px solid var(--line);border-radius:22px;padding:24px;margin:18px 0}.address-card h3{margin-top:0}.address-card p{font-family:var(--font-heading);font-weight:750;color:var(--ink-soft);line-height:1.55}.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 26px}.tag-cloud span{display:inline-flex;border:1px solid var(--line);background:#f8fcfe;border-radius:999px;padding:10px 13px;color:var(--primary-dark);font-family:var(--font-heading);font-weight:850;font-size:var(--text-sm);line-height:1.2}
.site-footer{padding:58px 0 28px;background:#071b2a;color:#e9f7fb}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}.footer-brand{margin-bottom:16px}.footer-grid p{color:#b8ced8;font-size:var(--text-sm);line-height:1.65}.footer-grid h2{font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.09em;color:#90E0EF;max-width:none}.footer-grid ul{list-style:none;margin:0;padding:0}.footer-grid li{margin:10px 0}.footer-grid a:hover{color:#90E0EF}.footer-bottom{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:20px;color:#b8ced8;font-size:var(--text-sm);line-height:1.55}.reveal-on-scroll{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}.reveal-on-scroll.revealed{opacity:1;transform:translateY(0)}
@media (max-width:980px){.nav-wrap{min-height:74px}.main-nav{position:absolute;left:16px;right:16px;top:76px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:14px;display:none;flex-direction:column;align-items:stretch}.main-nav.is-open{display:flex}.nav-toggle{display:block}.nav-wrap>.btn-small{display:none}.hero-grid,.split-layout,.diagnostic-layout,.diagnostic-contact-layout,.guide-layout,.partner-layout{grid-template-columns:1fr}.quick-grid,.content-grid.three,.content-grid.two,.partner-grid{grid-template-columns:1fr 1fr}.hero{padding-top:54px}.hero h1,.page-hero h1{max-width:14ch}.hero-visual{min-height:420px}.sticky-box{position:relative;top:auto}.footer-grid{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column}.cta-band{align-items:flex-start;flex-direction:column}.section-heading h2{max-width:18ch}}
@media (max-width:640px){:root{--measure:64ch}.container{width:min(100% - 24px,var(--container))}body{line-height:1.68}.hero h1,.page-hero h1{font-size:clamp(2.35rem,12vw,3.15rem);letter-spacing:-.065em;max-width:12ch}.hero p,.page-hero p,.lead{line-height:1.52}.quick-grid,.content-grid.three,.content-grid.two,.partner-grid{grid-template-columns:1fr}.section{padding:58px 0}.section-overlap{margin-top:-68px}.floating-note{position:static;margin:8px}.shutter-card{padding:14px}.hero-visual{min-height:auto}.footer-grid{grid-template-columns:1fr}.rich-content,.quick-card,.article-card,.info-panel,.danger-box,.diagnostic-card,.sticky-box,.partner-card{padding:22px}.rich-content h2{max-width:100%;margin-top:30px}.form-grid{grid-template-columns:1fr;gap:0}.contact-form .btn{width:100%}.tech-orbit{min-height:300px}.tech-orbit i{width:58px;height:58px}.tech-orbit span{width:126px;height:126px;font-size:22px}.cta-band{padding:26px;border-radius:24px}.price-table{font-size:.9rem}.section-heading{text-align:left}.section-heading p{margin-inline:0}.section-heading h2{margin-left:0;margin-right:0;max-width:100%}.partner-actions .btn{width:100%}.tag-cloud span{width:100%;justify-content:center}}
@media (min-width:1280px){body{font-size:1.08rem}.rich-content{padding:42px}.section{padding:92px 0}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}