:root{
  --rsb-red:#D8232A;--rsb-blue:#0F57B7;--ps-blue:#0499F7;--navy:#06192F;
  --coal:#1F2025;--steel:#8B8E95;--paper:#F3F3F1;--white:#fff;--muted:#667085;
  --line:#e6e8ec;--radius:18px;--shadow:0 16px 45px rgba(6,25,47,.12);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--coal);background:#fff}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:auto}.eyebrow{font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--rsb-blue)}h1,h2,h3,p{margin-top:0}h2{font-size:clamp(2rem,4vw,3.1rem);line-height:1.05;margin-bottom:14px}.lead{font-size:1.08rem;color:#58606b;max-width:780px;line-height:1.65}.section{padding:86px 0}.section.alt{background:#f7f9fc}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:9px;padding:13px 19px;font-weight:800;cursor:pointer;transition:.2s;background:var(--rsb-blue);color:#fff}.btn:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(15,87,183,.25)}.btn.red{background:var(--rsb-red)}.btn.dark{background:var(--coal)}.btn.light{background:#fff;color:var(--coal);border:1px solid #d9dde3}.btn.sm{padding:10px 14px;font-size:.9rem}
.topbar{height:42px;background:var(--coal);color:#fff;display:flex;align-items:center;position:relative;z-index:40;transition:.25s}.topbar .inner{display:flex;justify-content:space-between;gap:20px;font-size:.86rem}.topbar nav,.topbar .links{display:flex;gap:22px;align-items:center}.main-header{height:86px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:35;transition:.25s}.main-header .inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:25px}.brand{display:flex;align-items:center;gap:14px;min-width:270px}.brand-mark{width:48px;height:48px;border-radius:13px;background:linear-gradient(135deg,var(--rsb-red),var(--rsb-blue));position:relative;box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}.brand-mark:after{content:'RSB';position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-weight:950;font-size:.9rem}.brand-title{font-weight:900;letter-spacing:-.02em}.brand-sub{font-size:.75rem;color:var(--muted)}.main-nav{display:flex;align-items:center;gap:20px;font-size:.92rem;font-weight:750}.main-nav a{padding:10px 0;border-bottom:2px solid transparent}.main-nav a:hover{color:var(--rsb-blue);border-color:var(--rsb-red)}.header-actions{display:flex;gap:9px}.search-btn{width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:1.1rem}.scrolled .topbar{height:0;overflow:hidden}.scrolled .main-header{box-shadow:0 8px 24px rgba(0,0,0,.08)}
.hero{position:relative;min-height:650px;display:grid;align-items:end;overflow:hidden;background:var(--navy)}.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity .7s;background-size:cover;background-position:center}.hero-slide.active{opacity:1}.hero-slide:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,25,47,.88) 0%,rgba(6,25,47,.56) 45%,rgba(6,25,47,.15) 72%,rgba(6,25,47,.28) 100%)}.hero-slide.one{background-image:linear-gradient(120deg,#06192f,#0f57b7 52%,#0499f7)}.hero-slide.two{background-image:linear-gradient(120deg,#1f2025,#29364d 48%,#d8232a)}.hero-slide.three{background-image:linear-gradient(120deg,#071a2e,#0b3f70 55%,#0f57b7)}.hero-art{position:absolute;right:7%;top:15%;width:37%;height:55%;border-radius:28px;background:linear-gradient(145deg,rgba(255,255,255,.18),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.2);box-shadow:0 30px 70px rgba(0,0,0,.25);backdrop-filter:blur(10px);display:grid;place-items:center;overflow:hidden}.hero-art img{width:82%;filter:drop-shadow(0 8px 18px rgba(0,0,0,.25))}.hero-content{position:relative;z-index:3;color:#fff;padding:0 0 72px;width:min(1180px,calc(100% - 40px));margin:auto}.hero-copy{max-width:660px}.hero h1{font-size:clamp(3rem,7vw,5.8rem);line-height:.93;letter-spacing:-.06em;margin-bottom:18px}.hero p{font-size:1.15rem;line-height:1.65;color:rgba(255,255,255,.82);max-width:620px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.hero-caption{position:absolute;right:0;bottom:0;background:rgba(3,16,30,.82);padding:16px 18px;width:min(430px,80vw);border-left:3px solid var(--ps-blue)}.hero-caption strong{display:block;margin-bottom:4px}.hero-dots{position:absolute;left:0;bottom:22px;display:flex;gap:7px}.hero-dot{width:24px;height:4px;background:rgba(255,255,255,.35);border-radius:5px}.hero-dot.active{background:#fff}
.quick-actions{position:relative;z-index:8;margin-top:-28px}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quick-card{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:20px;display:flex;align-items:center;gap:14px;font-weight:900}.quick-icon{width:42px;height:42px;border-radius:12px;background:#eef5ff;color:var(--rsb-blue);display:grid;place-items:center;font-size:1.2rem}.quick-card:nth-child(2) .quick-icon{background:#fff0f1;color:var(--rsb-red)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.045)}.card-media{height:190px;background:linear-gradient(135deg,#eaf2ff,#dbe5ef);position:relative;display:grid;place-items:center;color:var(--navy);font-weight:950;font-size:1.25rem}.card-media.red{background:linear-gradient(135deg,#ffe9ea,#f3c7ca)}.card-media.dark{background:linear-gradient(135deg,#263344,#0a1d31);color:#fff}.card-body{padding:20px}.card h3{font-size:1.12rem;margin-bottom:8px}.card p{font-size:.92rem;color:#667085;line-height:1.55}.price{font-weight:900;font-size:1.18rem;color:var(--rsb-blue)}
.line-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.line-card{position:relative;min-height:210px;padding:26px;border-radius:18px;color:#fff;overflow:hidden;background:linear-gradient(145deg,var(--navy),#0b3f70)}.line-card:nth-child(2n){background:linear-gradient(145deg,#2c3138,#1f2025)}.line-card:nth-child(3n){background:linear-gradient(145deg,#991c22,#d8232a)}.line-card span{display:inline-flex;padding:7px 9px;border-radius:7px;background:rgba(255,255,255,.12);font-size:.72rem;font-weight:800}.line-card h3{font-size:1.45rem;margin:42px 0 8px}.line-card p{color:rgba(255,255,255,.76);line-height:1.5}
.chart-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}.chart-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow)}#techChart{width:100%;height:340px}.legend{display:grid;gap:12px}.legend-item{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:10px}.legend-item small{color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}.feature-panel{padding:38px;border-radius:24px;background:linear-gradient(145deg,#06192f,#0f57b7);color:#fff}.feature-panel p{color:rgba(255,255,255,.8);line-height:1.65}.checklist{display:grid;gap:12px;margin:24px 0}.check{display:flex;gap:10px}.check:before{content:'✓';width:23px;height:23px;border-radius:50%;background:rgba(255,255,255,.15);display:grid;place-items:center;font-weight:900}
.samples{display:grid;grid-template-columns:2fr 1fr 1fr;grid-auto-rows:180px;gap:12px}.sample{border-radius:18px;background:linear-gradient(135deg,#d7dee7,#f7f9fb);position:relative;overflow:hidden}.sample:nth-child(1){grid-row:span 2;background:linear-gradient(135deg,#15283b,#0f57b7)}.sample:nth-child(2){background:linear-gradient(135deg,#d8232a,#8c151b)}.sample:nth-child(3){background:linear-gradient(135deg,#4b5158,#1f2025)}.sample:nth-child(4){background:linear-gradient(135deg,#bfc4c9,#f6f7f8)}.sample:nth-child(5){background:linear-gradient(135deg,#0f57b7,#0499f7)}.sample label{position:absolute;left:14px;bottom:12px;color:#fff;font-weight:850;background:rgba(0,0,0,.28);padding:7px 9px;border-radius:7px}
.branches{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.branch{border:1px solid var(--line);padding:24px;border-radius:18px}.branch strong{display:block;font-size:1.08rem;margin-bottom:6px}.branch small{color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px}.contact-panel{padding:28px;border-radius:20px;background:#f6f8fb}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:.82rem;font-weight:800}.field input,.field select,.field textarea{width:100%;border:1px solid #d9dde3;border-radius:9px;padding:12px;background:#fff;font:inherit}.field textarea{min-height:120px;resize:vertical}.tabs{display:flex;gap:8px;margin-bottom:16px}.tab{border:1px solid #d9dde3;background:#fff;padding:10px 12px;border-radius:8px;font-weight:800;cursor:pointer}.tab.active{background:var(--rsb-blue);color:#fff;border-color:var(--rsb-blue)}
.collab{background:linear-gradient(110deg,#06192f 0%,#0b3560 45%,#0f57b7 100%);color:#fff}.collab-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.collab-logos{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px}.logo-box{background:#fff;border-radius:16px;padding:26px;min-height:150px;display:grid;place-items:center}.logo-box.rsb{font-size:2.4rem;font-weight:950;color:var(--coal)}.plus{font-size:2rem;font-weight:900}.collab p{color:rgba(255,255,255,.78);line-height:1.65}
.footer{background:#17191d;color:#fff;padding:54px 0 28px}.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:26px}.footer h4{margin-bottom:13px}.footer a{display:block;color:#c8cdd3;margin:8px 0;font-size:.92rem}.footer .copyright{border-top:1px solid #333840;margin-top:32px;padding-top:20px;color:#959da7;font-size:.86rem}.search-overlay{position:fixed;inset:0;background:rgba(5,14,24,.82);z-index:100;display:none;place-items:start center;padding-top:120px}.search-overlay.open{display:grid}.search-box{width:min(760px,calc(100% - 36px));background:#fff;border-radius:18px;padding:22px;box-shadow:0 25px 70px rgba(0,0,0,.35)}.search-box input{width:100%;border:0;border-bottom:2px solid var(--line);font-size:1.35rem;padding:12px 6px;outline:none}
@media(max-width:980px){.main-nav{display:none}.cards{grid-template-columns:repeat(2,1fr)}.line-grid{grid-template-columns:repeat(2,1fr)}.quick-grid{grid-template-columns:repeat(2,1fr)}.chart-wrap,.split,.contact-grid,.collab-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.hero-art{display:none}}
@media(max-width:620px){.container{width:min(100% - 24px,1180px)}.topbar{display:none}.main-header{height:72px}.brand{min-width:0}.brand-sub{display:none}.header-actions .btn{display:none}.hero{min-height:620px}.hero-content{padding-bottom:90px}.hero-caption{display:none}.quick-grid,.cards,.line-grid,.branches,.footer-grid,.form-grid{grid-template-columns:1fr}.samples{grid-template-columns:1fr;grid-auto-rows:180px}.sample:nth-child(1){grid-row:auto}.section{padding:64px 0}}