:root{--charcoal:#626466;--charcoal-dark:#292b2d;--orange:#f9a11b;--orange-dark:#d98200;--blue:#2878b8;--blue-dark:#185b91;--blue-pale:#eef6fb;--warm:#faf9f6;--warm-2:#f3f1ec;--line:#dedbd4;--text:#242526;--muted:#626466;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--warm);line-height:1.6}a{color:inherit;text-decoration:none}.wrap{max-width:1120px;margin:auto;padding:0 24px}
header{position:sticky;top:0;background:rgba(250,249,246,.94);border-bottom:1px solid rgba(98,100,102,.18);z-index:10;backdrop-filter:blur(12px)}.nav{display:flex;align-items:center;justify-content:space-between;padding:15px 24px;max-width:1200px;margin:auto}.brand{font-size:22px;font-weight:800;letter-spacing:-.04em}.brand b,.amber{color:var(--orange-dark)}.links{display:flex;gap:20px;align-items:center;font-size:14px}.links>a:not(.btn){position:relative}.links>a:not(.btn):after{content:"";position:absolute;left:0;right:100%;bottom:-5px;height:2px;background:var(--blue);transition:.2s}.links>a:not(.btn):hover:after{right:0}
.btn{display:inline-block;background:var(--charcoal-dark);color:white;border-radius:999px;padding:11px 20px;font-weight:700;box-shadow:0 5px 14px rgba(41,43,45,.14);transition:transform .18s,box-shadow .18s}.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(41,43,45,.2)}
.hero{padding:96px 0 88px;position:relative;overflow:hidden;background:linear-gradient(135deg,var(--warm) 0%,#fff 55%,var(--blue-pale) 100%)}.hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(40,120,184,.13);border-radius:50%;right:-120px;top:-110px;box-shadow:0 0 0 38px rgba(40,120,184,.035),0 0 0 76px rgba(40,120,184,.025)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:13px;font-weight:800;color:var(--blue)}.hero h1{font-size:64px;line-height:1.04;max-width:850px;margin:18px 0;letter-spacing:-.035em}.hero p{font-size:21px;max-width:760px;color:var(--muted)}
.section{padding:76px 0;background:white}.alt{background:var(--warm-2)}.dark{background:var(--charcoal-dark);color:white;position:relative;overflow:hidden}.dark:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 0 69%,rgba(40,120,184,.09) 69% 70%,transparent 70% 100%);background-size:44px 44px;opacity:.55}.orange{background:var(--orange);color:var(--charcoal-dark);text-align:center}.section>.wrap{position:relative}.section h2{font-size:38px;line-height:1.15;margin:0 0 18px;letter-spacing:-.025em}.section p{font-size:18px;max-width:800px;color:var(--muted)}.dark p{color:#d7d9da}.orange p{color:#49320e;margin-left:auto;margin-right:auto}
.grid3,.grid2{display:grid;gap:22px}.grid3{grid-template-columns:repeat(3,1fr)}.grid2{grid-template-columns:repeat(2,1fr)}.card{border:1px solid rgba(98,100,102,.16);border-radius:15px;padding:31px 27px 27px;background:#fff;box-shadow:0 10px 28px rgba(41,43,45,.07);position:relative;transition:transform .18s,box-shadow .18s}.card:hover{transform:translateY(-3px);box-shadow:0 15px 34px rgba(41,43,45,.11)}.card:before{content:"";display:block;width:48px;height:14px;border-radius:0 0 9px 9px;background:var(--warm-2);border:1px solid rgba(98,100,102,.14);border-top:0;position:absolute;top:0;left:calc(50% - 24px)}.card:nth-child(2):after{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--blue);border-radius:15px 15px 0 0}.card h3{font-size:22px;margin-top:5px}.card p{font-size:16px}.card .amber{color:var(--blue-dark)}
.route{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-top:30px}.pill{border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:8px 13px;background:rgba(255,255,255,.035);box-shadow:inset 0 0 0 1px rgba(40,120,184,.05)}.route .pill:nth-of-type(3),.route .pill:nth-of-type(4){border-color:rgba(40,120,184,.8);color:#a8d6f6}.list{columns:2;max-width:760px}.list li{margin:7px 0}.cta{margin-top:25px}
.form{max-width:820px}.form input,.form textarea{width:100%;padding:13px;border:1px solid #cbc8c2;border-radius:10px;margin:6px 0 16px;background:white;box-shadow:inset 0 1px 2px rgba(41,43,45,.03)}.form input:focus,.form textarea:focus{outline:2px solid rgba(40,120,184,.25);border-color:var(--blue)}.checks{display:grid;grid-template-columns:1fr 1fr;gap:9px}.checks label{border:1px solid #dedbd4;padding:11px;border-radius:9px;background:white;box-shadow:0 3px 9px rgba(41,43,45,.035)}.checks input{width:auto;margin-right:8px}
footer{padding:38px 0;border-top:1px solid #dedbd4;color:#6d6f70;background:var(--warm)}
/* Blueprint-inspired technical accent */
.blueprint{background-color:var(--blue);color:white;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:24px 24px}.blueprint p{color:#eaf5fc}
@media(max-width:850px){.links{display:none}.hero{padding:72px 0}.hero h1{font-size:46px}.grid3,.grid2{grid-template-columns:1fr}.list{columns:1}.checks{grid-template-columns:1fr}.card:before{left:26px}}

.engineering-infographic{display:block;width:100%;height:auto;margin:28px 0 18px;border-radius:12px;box-shadow:0 14px 34px rgba(25,35,45,.14);border:1px solid rgba(30,100,170,.12)}
.system-visual{overflow:hidden}
.work-image{width:100%;height:300px;object-fit:contain;background:white;border-radius:12px}
.menu-toggle{display:none;font:inherit;padding:10px 16px;border:1px solid var(--line);border-radius:8px;background:white;cursor:pointer}
.skip-link{position:fixed;left:16px;top:-100px;background:white;color:var(--text);padding:12px;z-index:30}.skip-link:focus{top:12px}
a:focus-visible,button:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
.text-link,footer a{color:var(--blue-dark);text-decoration:underline;text-underline-offset:3px}
.project img{display:block;width:100%;height:220px;object-fit:contain;margin:0 0 22px;background:#fff;border-radius:8px}
.project h3{margin-bottom:8px}.project p{margin:0}
.form select{display:block;width:100%;padding:13px;margin:6px 0 24px;border:1px solid #cbc8c2;border-radius:10px;background:white;font:inherit}
.form textarea,.form input{font:inherit}.form button{border:0;font:inherit;cursor:pointer}.form button:disabled{opacity:.6;cursor:wait}.honeypot{display:none}
#suppliers,#project-form{scroll-margin-top:100px}.hero:after{pointer-events:none}
.amber{color:#925600}.hero h1,.section h2{overflow-wrap:break-word}
@media(max-width:1100px){.nav{flex-wrap:wrap;gap:14px}.menu-toggle{display:block;margin-left:auto}.links{display:none;width:100%;flex-direction:column;align-items:stretch;gap:0;padding:8px 0 12px}.links.is-open{display:flex}.links a{padding:12px 8px;min-height:44px}.links .btn{text-align:center;margin-top:8px}}
@media(max-width:480px){.hero{padding:48px 0}.hero h1{font-size:39px}.hero p{font-size:19px}.section{padding:48px 0}.section h2{font-size:30px}.wrap{padding:0 20px}.card{padding:26px 22px}.project img{height:200px}.btn{max-width:100%}.form input[type=file]{font-size:14px}footer p{line-height:2}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Engineering illustration system */
.engineering-visual{margin:30px 0 14px;border:1px solid rgba(29,78,137,.14);border-radius:18px;background:#fff;box-shadow:0 18px 44px rgba(31,43,55,.12);overflow:hidden}
.engineering-visual img{display:block;width:100%;height:auto}
.visual-note{max-width:980px;margin:14px 0 28px;font-size:.92rem;line-height:1.55;color:#68717a}
.visual-note strong{color:#245fa8}