/* Shared chantier/gravats navigation, complementary to silo-ui.css. */
.wch{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #e2e8f0;box-shadow:0 2px 8px #102b4208}
.wch-inner{max-width:1480px;margin:auto;padding:0 32px;min-height:84px;display:flex;align-items:center;gap:28px}
.wch-brand{flex-shrink:0;display:flex;flex-direction:column;gap:4px;text-decoration:none}.wch-brand img{display:block;width:170px;height:auto}.wch-brand span{font-size:10px;letter-spacing:.08em;color:#52657b;text-align:center}
.wch-nav{display:flex;align-items:center;justify-content:center;gap:24px;flex:1}.wch-nav>a,.wch-zones>summary{font-size:14px;font-weight:650;color:#0f172a;text-decoration:none;white-space:nowrap}.wch-nav a:hover,.wch-zones>summary:hover{color:#004e98}.wch-nav a[aria-current=page]{color:#004e98}
.wch-zones{position:relative}.wch-zones>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;padding:16px 0}.wch-zones>summary::-webkit-details-marker{display:none}.wch-zones>summary:after{content:'⌄';font-size:18px}.wch-zones[open]>summary:after{content:'⌃'}
.wch-zone-panel{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:540px;max-width:calc(100vw - 32px);padding:24px;background:white;border:1px solid #e2e8f0;border-radius:16px;box-shadow:0 16px 40px #102b4220;display:grid;grid-template-columns:1fr 1fr;gap:24px}.wch-zone-panel strong{display:block;font-size:14px;margin-bottom:12px;color:#004e98}.wch-zone-panel a{display:block;padding:7px 0;font-size:13px;color:#334155;line-height:1.4}
.wch-actions{display:flex;gap:16px;align-items:center;flex-shrink:0}.wch-phone{font-size:14px;font-weight:750;color:#004e98;white-space:nowrap}.wch-quote{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:12px 18px;border-radius:12px;background:#16a34a;color:white;font-size:14px;font-weight:800;white-space:nowrap}.wch-quote:hover{background:#15803d;color:white}.wch-toggle{display:none}
.wch a:focus-visible,.wch summary:focus-visible,.wch button:focus-visible{outline:3px solid #75b8f0;outline-offset:4px}.wf-brand-logo{width:180px;height:auto;background:white;padding:10px;border-radius:8px;margin-bottom:18px}.wc-contact-bar{z-index:60!important}.wf{margin-top:0}html{scroll-padding-top:105px}
.wcb{max-width:1280px;margin:auto;padding:32px 32px 72px;color:#0f172a}.wcb-intro{max-width:780px;padding:0 0 36px}.wcb-intro nav{font-size:13px;color:#64748b;margin-bottom:36px;display:flex;gap:10px}.wcb-label{font-size:11px;font-weight:800;letter-spacing:.1em;color:#075daf}.wcb h1{font-size:clamp(28px,3.5vw,42px);font-weight:800;line-height:1.2;letter-spacing:-.025em;margin:12px 0 18px}.wcb-intro>p{font-size:17px;line-height:1.7;color:#536579}.wcb-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}.wcb-card{overflow:hidden;border:1px solid #e2e8f0;border-radius:18px;background:white;box-shadow:0 4px 16px #102b4208;transition:box-shadow .2s,transform .2s}.wcb-card:hover{box-shadow:0 12px 24px #102b4215;transform:translateY(-3px)}.wcb-card>a{display:flex;flex-direction:column;height:100%;text-decoration:none;color:inherit}.wcb-card img{width:100%;aspect-ratio:1.65;object-fit:cover}.wcb-card-body{padding:24px;display:flex;flex-direction:column;flex:1}.wcb-card h2{font-size:21px;font-weight:750;line-height:1.35;margin:12px 0}.wcb-card p{font-size:14px;line-height:1.75;color:#536579;margin:0 0 24px}.wcb-read{margin-top:auto;display:flex;justify-content:space-between;font-size:14px;font-weight:750;color:#075daf}.wcb-card a:focus-visible{outline:3px solid #075daf;outline-offset:-4px}
@media(max-width:1000px){.wcb-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.wcb{padding:24px 18px 44px}.wcb-grid{grid-template-columns:1fr;gap:24px}.wcb-intro nav{margin-bottom:26px}.wcb-intro{padding-bottom:28px}.wcb-card-body{padding:22px}}
@media(max-width:1199px){.wch-inner{min-height:72px;padding:0 20px;gap:16px}.wch-toggle{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid #e2e8f0;border-radius:10px;background:white;color:#0f172a;flex-shrink:0}.wch-brand{margin-right:auto}.wch-brand img{width:145px}.wch-phone{display:none}.wch-nav{display:none;position:absolute;top:100%;left:0;right:0;background:white;padding:16px 24px 24px;box-shadow:0 15px 20px #102b4214;border-top:1px solid #e2e8f0;max-height:calc(100dvh - 80px);overflow-y:auto}.wch-nav.is-open{display:flex;align-items:stretch;flex-direction:column;gap:0}.wch-nav>a{padding:15px 0;border-bottom:1px solid #f1f5f9}.wch-zone-panel{position:static;transform:none;width:auto;max-width:none;box-shadow:none;border-radius:10px;padding:16px;gap:16px}.wch-zones>summary{padding:15px 0}.wch-quote{font-size:12px;padding:11px 14px}}
@media(max-width:480px){.wch-inner{padding:0 12px;gap:10px;min-height:70px}.wch-brand img{width:125px}.wch-brand span{font-size:8px;letter-spacing:.03em}.wch-quote{font-size:11px;padding:10px}.wch-toggle{width:38px;height:40px}.wch-zone-panel{grid-template-columns:1fr}.wch-nav{padding:12px 18px 20px}}