.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container--wide { max-width: 1440px; padding: 0 clamp(20px, 2.5vw, 40px); }
/* QBC Systems — Layout & Navigation */
.nav{position:-webkit-sticky;position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav-inner{gap:28px;height:72px}
.logo,.nav-inner{display:flex;align-items:center}
.logo{margin-right:8px}
.qbc-logo{display:block;width:108px;height:53px;object-fit:contain}
.qbc-logo--inverted{filter:brightness(0) invert(1)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links>li{position:relative}
.nav-links a.nav-link{display:inline-flex;align-items:center;gap:5px;padding:10px 13px;font-size:14.5px;font-weight:600;color:#3a445c;border-radius:8px}
.nav-links a.nav-link:hover{color:var(--blue);background:#f2f5fb}
.nav-links .chev{width:13px;height:13px;color:#98a2b8}
.nav-drop{position:absolute;top:calc(100% + 6px);left:6px;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 20px 44px rgba(16,34,90,.12);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .16s ease}
.nav-links li:focus-within .nav-drop,.nav-links li:hover .nav-drop{opacity:1;visibility:visible;transform:none}
.nav-drop a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;font-weight:600;color:#3a445c}
.nav-drop a:hover{background:#f2f5fb;color:var(--blue)}
.nav-right{display:flex;align-items:center;gap:20px;margin-left:12px}
.nav-phone{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:700;color:#23407c}
.nav-phone svg{width:16px;height:16px;color:var(--blue)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;color:var(--ink)}
.nav-toggle svg{width:26px;height:26px}
.footer{background:var(--navy-950);color:#c9d4ec;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.9fr .9fr 1.25fr .9fr 1.35fr;grid-gap:36px;gap:36px;padding-bottom:44px}
.footer .qbc-logo{width:112px;height:55px}
.footer-about{margin-top:18px;max-width:250px;font-size:13.5px;line-height:1.7;color:#93a3c6}
.footer-social{display:inline-flex;margin-top:20px}
.footer-social a{width:34px;height:34px;border-radius:8px;border:1px solid hsla(0,0%,100%,.16);display:grid;place-items:center;color:#c9d4ec;transition:background .15s ease}
.footer-social a:hover{background:hsla(0,0%,100%,.08)}
.footer-social svg{width:15px;height:15px}
.footer-col h4{color:#8ea0c6;font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:#c9d4ec}
.footer-col a:hover{color:#fff}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.55}
.footer-contact svg{width:15px;height:15px;color:#5b7bd8;flex:none;margin-top:3px}
.footer-bottom{border-top:1px solid hsla(0,0%,100%,.09);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#7f90b5}
.footer-bottom nav{display:flex;gap:26px}
.footer-bottom a:hover{color:#fff}
@media (max-width:1020px){.hero-products{gap:20px 34px}.stats-card{grid-template-columns:repeat(2,1fr);row-gap:22px}.stat:nth-child(2){border-right:0}.blog-grid,.solution-grid{gap:16px}.scard{padding:20px 18px 18px}.diff{grid-template-columns:1fr}.diff-left,.diff-right{padding:56px 24px}.diff-left{background:var(--navy-900)}.diff-left:before{width:100%}.diff-left:after{background:linear-gradient(90deg,rgba(8,17,45,.96),rgba(8,17,45,.8))}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>:first-child{grid-column:1/-1}}
@media (max-width:760px){.h1-br,.nav-links,.nav-phone{display:none}.nav-right{margin-left:auto}.nav-toggle{display:inline-flex}.nav.open .nav-links{display:flex;position:absolute;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;background:#fff;border-bottom:1px solid var(--line);padding:10px 16px 18px;margin:0}.nav.open .nav-drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 4px 14px}.hero{padding-top:44px}.hero-products{grid-template-columns:1fr 1fr}.hero-actions{flex-wrap:wrap;gap:18px}.stats-card{grid-template-columns:1fr}.stat{border-right:0}.blog-head,.cta-inner{flex-direction:column;align-items:flex-start}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;align-items:flex-start}}
@media (max-width:860px){.nav-links,.nav-phone{display:none}.nav-right{margin-left:auto}.nav-toggle{display:inline-flex}.nav.open .nav-links{display:flex;position:absolute;z-index:20;top:72px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:10px 16px 18px;background:#fff;border-bottom:1px solid var(--line)}.nav.open .nav-drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 4px 14px}.bshero,.shhero{padding:50px 0 72px}.bsdifference-grid,.bsfeatures-head,.bshero-grid,.bsproof-grid,.shfeatures-top,.shhero-grid,.shops-grid,.shplatform-grid{grid-template-columns:1fr}.bshero-copy,.shhero-copy{max-width:650px}.bshero-visual,.shhero-visual{width:min(780px,112%);margin:18px -12% 0 auto}.bsdifference-grid,.bsfeatures-head,.shfeatures-top,.shops-grid{gap:26px}.bsproof-grid{gap:30px}.bsproof-copy>p{max-width:600px}.bsfeatures-grid{grid-template-columns:repeat(2,1fr)}.bsfeature:nth-child(3),.bsfeature:nth-child(5){border-left:0}.bsfeature:nth-child(4){border-left:1px solid rgba(16,34,90,.14)}.bsfeature:nth-child(n+3){border-top:1px solid rgba(16,34,90,.14)}.shplatform-grid{gap:36px}.shplatform-map{max-width:680px;width:100%}.shfeatures-foundation{max-width:600px}}
@media (max-width:600px){.nav-inner{gap:12px}.nav-right{gap:6px}.nav-right .btn-blue{display:none}.bshero h1,.shhero h1{font-size:clamp(2rem,10vw,2.65rem)}.bshero-visual,.shhero-visual{width:148%;margin-right:-48%}.bsaccount-body,.shcontrol-body{grid-template-columns:78px minmax(0,1fr)}.bsaccount-nav span{padding-inline:10px;font-size:8px}.bsaccount-nav svg{display:none}.bsaccount-layout{grid-template-columns:1fr}.bsaccount-sidepanel{display:none}.shcontrol-body>aside span{padding-inline:9px;font-size:7px}.shcontrol-content{grid-template-columns:1fr}.shcontrol-stock{display:none}.bsdifference,.shops{padding:52px 0}.bsfeatures-grid,.bsproof-steps,.shfeatures-foundation,.shfeatures-index,.shops-list{grid-template-columns:1fr}.bsfeature,.bsfeature+.bsfeature,.bsfeature:nth-child(3),.bsfeature:nth-child(4),.bsfeature:nth-child(5),.bsproof-steps article+article,.shfeatures-foundation>div+div,.shfeatures-index article+article,.shfeatures-index article:nth-child(3),.shops-list article:nth-child(2n){border-left:0}.bsfeature:nth-child(n+2),.bsproof-steps article+article,.shfeatures-foundation>div+div,.shfeatures-index article:nth-child(n+2),.shops-list article:nth-child(n+2){border-top:1px solid rgba(16,34,90,.16)}.bsproof-steps article+article{border-top-color:hsla(0,0%,100%,.18)}.shops-list article,.shops-list article:nth-child(2n){padding:20px 0}.bsfeature>p,.shfeatures-index article>p{min-height:0}.shplatform-map{min-height:390px}.shplatform-core{top:50%}.shplatform-node{min-width:126px;font-size:10px}.shplatform-node--one{left:0;top:2%}.shplatform-node--two{right:0;top:2%}.shplatform-node--three{right:0;bottom:2%}.shplatform-node--four{left:0;bottom:2%}.shplatform-line{width:50%}}


.site-header { position: sticky; top: 0; z-index: 50; }
.site-footer { background: var(--navy-950); }
.footer-inner { max-width: var(--container); margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) { .footer-inner { grid-template-columns: 1fr; } }