/* SIZA Engineering : pages d'expertise (même système visuel que l'accueil) */
:root{--yellow:#FCC51A;--yellow-dim:#b8900f;--ink:#1E1E1E;--cream:#FFF4DF;--muted:rgba(30,30,30,.72);--faint:rgba(30,30,30,.5);--line:rgba(30,30,30,.1);--r:14px;--rb:5px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{background:#fff;color:var(--ink);font-family:'Figtree',system-ui,sans-serif;font-size:17px;line-height:1.65;overflow-x:clip}
img{max-width:100%;display:block}
a{color:inherit}
.topnav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:14px 4vw;background:rgba(252,252,252,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 1px 0 rgba(30,30,30,.06)}
.topnav .logo{display:flex;flex-direction:column;align-items:center;gap:3px;text-decoration:none;line-height:1}
.topnav .logo img{height:24px;width:auto;filter:brightness(0);opacity:.88}
.topnav .logo small{font-size:8.5px;font-weight:600;letter-spacing:.42em;margin-right:-.42em}
.topnav .links{display:flex;gap:26px;align-items:center;font-size:15.5px}
.topnav .links a{text-decoration:none}
.topnav .links a:not(.cta):hover{color:var(--yellow-dim)}
.topnav .links a.cta{background:var(--yellow);font-weight:500;padding:10px 18px;border-radius:var(--rb);white-space:nowrap}
@media(max-width:980px){.topnav .links a:not(.cta){display:none}}
@media(max-width:400px){.topnav{padding:10px 16px}.topnav .links a.cta{padding:9px 13px;font-size:14px}}
.wrap{max-width:1180px;margin:0 auto;padding:0 4vw}
.crumbs{font-size:13.5px;color:var(--faint);padding-top:96px}
.crumbs a{text-decoration:none;color:var(--muted)}
.crumbs a:hover{color:var(--yellow-dim)}
.phero{display:grid;grid-template-columns:1.1fr .9fr;gap:5vw;align-items:center;padding:28px 0 64px}
.kick{font-size:14px;letter-spacing:.3em;text-transform:uppercase;color:var(--yellow-dim);margin-bottom:14px}
h1{font-weight:600;font-size:clamp(32px,4.2vw,54px);line-height:1.08;letter-spacing:-.01em}
h1 span{color:var(--yellow)}
.lead{margin-top:20px;font-size:clamp(17px,1.4vw,19px);color:var(--muted);max-width:620px}
.ctas{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;font-weight:500;font-size:17px;padding:14px 22px;border-radius:var(--rb);text-decoration:none;border:1px solid transparent;transition:transform .15s,box-shadow .15s}
.btn.solid{background:var(--yellow)}
.btn.solid:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(252,197,26,.4)}
.btn.line{border-color:rgba(30,30,30,.3);color:var(--muted)}
.btn.line:hover{color:var(--ink);border-color:var(--ink)}
.phero figure{border-radius:var(--r);overflow:hidden;box-shadow:0 30px 60px -30px rgba(30,30,30,.45);aspect-ratio:4/3;background:#eee}
.phero figure img{width:100%;height:100%;object-fit:cover}
.brief{background:var(--cream);border-radius:var(--r);padding:26px 30px;margin-bottom:64px}
.brief h2{font-size:14px;letter-spacing:.24em;text-transform:uppercase;color:var(--yellow-dim);margin-bottom:12px;font-weight:600}
.brief ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 32px}
.brief li{position:relative;padding-left:22px}
.brief li::before{content:"";position:absolute;left:0;top:.72em;width:12px;height:2px;background:var(--yellow)}
.sec{padding:8px 0 56px}
.sec h2{font-weight:600;font-size:clamp(24px,2.6vw,34px);line-height:1.2;margin-bottom:16px;max-width:860px}
.sec h2 span{color:var(--yellow-dim)}
.sec p{color:var(--muted);max-width:820px;margin-bottom:14px}
.sec p b,.sec li b{color:var(--ink);font-weight:600}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
.card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--yellow);border-radius:10px;padding:20px 22px;box-shadow:0 10px 30px rgba(30,30,30,.05)}
.card h3{font-size:17.5px;font-weight:600;line-height:1.3;margin-bottom:8px}
.card p{font-size:15.5px;margin:0;color:var(--muted)}
.tech{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tech span{border:1px solid var(--line);background:#fafafa;border-radius:99px;padding:6px 13px;font-size:14px;color:var(--muted)}
.dark{background:#1E1E1E;color:#fff;border-radius:var(--r);padding:36px 38px;margin:8px 0 56px}
.dark .kick{color:var(--yellow)}
.dark h2{font-weight:600;font-size:clamp(22px,2.4vw,30px);line-height:1.25;margin-bottom:12px}
.dark p{color:rgba(255,255,255,.7);max-width:820px}
.dark .nums{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:22px}
.dark .nums div{border-top:2px solid var(--yellow);padding-top:10px}
.dark .nums b{display:block;font-size:26px;color:var(--yellow);font-weight:700;line-height:1.1}
.dark .nums small{font-size:13.5px;color:rgba(255,255,255,.6)}
.dark a{color:var(--yellow)}
.steps{counter-reset:s;list-style:none;margin-top:18px;display:grid;gap:10px;max-width:860px}
.steps li{counter-increment:s;position:relative;padding:12px 16px 12px 58px;background:#fafafa;border-radius:8px;color:var(--muted)}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:16px;top:12px;font-family:'IBM Plex Mono',monospace;font-weight:600;color:var(--yellow-dim)}
.faq{padding:8px 0 56px}
.faq h2{font-weight:600;font-size:clamp(24px,2.6vw,34px);margin-bottom:18px}
.qa{border-top:1px solid var(--line);padding:18px 0;max-width:900px}
.qa h3{font-size:18px;font-weight:600;margin-bottom:6px}
.qa p{color:var(--muted)}
.related{background:var(--cream);padding:48px 0 56px}
.related h2{font-weight:600;font-size:24px;margin-bottom:18px}
.rl{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.rl a{display:block;background:#fff;border-radius:10px;padding:16px 18px;text-decoration:none;border:1px solid rgba(30,30,30,.06);transition:border-color .2s,transform .2s}
.rl a:hover{border-color:var(--yellow);transform:translateY(-2px)}
.rl b{display:block;font-weight:600;font-size:16px}
.rl small{color:var(--muted);font-size:14px}
.pcta{background:var(--yellow);padding:52px 0}
.pcta .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.pcta h2{font-weight:600;font-size:clamp(24px,2.6vw,34px);line-height:1.2}
.pcta p{color:rgba(30,30,30,.78);margin-top:6px}
.pcta .btn{background:var(--ink);color:#fff}
.pfoot{background:#1E1E1E;color:rgba(255,255,255,.6);font-size:14.5px}
.pfoot .grid{display:grid;grid-template-columns:4fr 5fr 3fr;gap:40px;padding:48px 4vw 28px;max-width:1180px;margin:0 auto}
.pfoot .t{font-size:13px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:#fff;margin-bottom:14px}
.pfoot ul{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:7px 20px}
.pfoot a{color:rgba(255,255,255,.6);text-decoration:none}
.pfoot a:hover{color:var(--yellow)}
.pfoot .lg img{height:28px;filter:brightness(0) invert(1)}
.pfoot .lg small{display:block;color:#fff;font-size:9px;font-weight:600;letter-spacing:.42em;margin-top:4px}
.pfoot .lg p{margin-top:14px;max-width:320px}
.pfoot .bar{border-top:1px solid rgba(255,255,255,.1);padding:16px 4vw 20px;display:flex;justify-content:space-between;gap:8px 20px;flex-wrap:wrap;font-size:12.5px;max-width:1180px;margin:0 auto}
@media(max-width:900px){.phero{grid-template-columns:1fr;padding-bottom:40px}.cards,.rl{grid-template-columns:1fr 1fr}.dark .nums{grid-template-columns:1fr 1fr}.pfoot .grid{grid-template-columns:1fr 1fr}.pfoot .grid>div:first-child{grid-column:1/-1}}
@media(max-width:600px){.brief ul,.cards,.rl{grid-template-columns:1fr}.brief,.dark{padding:22px 20px}.pfoot .grid{grid-template-columns:1fr}.pfoot .bar{flex-direction:column}}
.brief .def{color:var(--ink);font-size:17px;line-height:1.6;margin-bottom:16px;max-width:980px}
.sec a,.qa a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--yellow);text-underline-offset:3px}
.card h3 a{text-decoration:none;color:inherit}
.card h3 a:hover{color:var(--yellow-dim)}