:root{
  --ink:#0A1B2A; --paper:#F5F8FA; --white:#FFFFFF;
  --air:#2FA8BF; --air-deep:#14508C; --steel:#62788A; --line:#DCE5EA;
  --display:'Space Grotesk','Helvetica Neue',Arial,sans-serif;
  --body:'Inter','Helvetica Neue',Arial,sans-serif;
  --mono:'IBM Plex Mono','SF Mono',Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.65;font-size:16px}
img{max-width:100%}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(245,248,250,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{width:34px;height:34px;flex:none}
.logo-text{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.02em;line-height:1.2}
.logo-text small{display:block;font-family:var(--mono);font-weight:400;font-size:10px;color:var(--steel);letter-spacing:.12em}
nav ul{display:flex;gap:30px;list-style:none}
nav a{font-size:14px;font-weight:500;text-decoration:none;color:var(--steel);transition:color .2s}
nav a:hover,nav a:focus-visible{color:var(--air-deep)}
nav a.active{color:var(--air-deep)}
nav a.active::after{content:"";display:block;height:2px;background:var(--air);margin-top:2px}
nav a:focus-visible{outline:2px solid var(--air);outline-offset:4px}
.nav-cta{font-family:var(--mono);font-size:13px;text-decoration:none;color:var(--white)!important;background:var(--ink);padding:9px 18px;border-radius:3px;transition:background .2s}
.nav-cta:hover{background:var(--air-deep)}
@media(max-width:860px){nav ul{gap:18px}nav a{font-size:13px}.logo-text small{display:none}}
@media(max-width:640px){nav ul{display:none}}

/* shared */
section{padding:92px 0}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--air-deep);margin-bottom:14px}
.sec-head{max-width:640px;margin-bottom:56px}
.sec-head h2,h1.page-title{font-family:var(--display);font-weight:700;font-size:clamp(26px,3.4vw,38px);letter-spacing:-.01em;line-height:1.2}
.sec-head p{margin-top:16px;color:var(--steel)}
.page-hero{background:var(--ink);color:var(--white);padding:76px 0 70px}
.page-hero .eyebrow{color:var(--air)}
.page-hero h1{font-family:var(--display);font-weight:700;font-size:clamp(30px,4.4vw,48px);letter-spacing:-.012em;max-width:20ch}
.page-hero p{margin-top:16px;color:#B9C8D4;max-width:56ch}

/* home hero */
.hero{position:relative;background:var(--ink);color:var(--white);overflow:hidden}
.hero .wrap{position:relative;z-index:2;padding-top:96px;padding-bottom:110px}
.hero .eyebrow{color:var(--air);margin-bottom:22px}
.hero h1{font-family:var(--display);font-weight:700;font-size:clamp(34px,5.2vw,58px);line-height:1.12;letter-spacing:-.015em;max-width:15ch}
.hero h1 em{font-style:normal;color:var(--air)}
.hero p.lede{margin-top:26px;max-width:52ch;font-size:17px;color:#B9C8D4}
.hero-cn{margin-top:14px;font-size:14px;color:#7E93A5;letter-spacing:.35em}
.hero-actions{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
.btn{font-family:var(--mono);font-size:13px;text-decoration:none;padding:13px 26px;border-radius:3px;letter-spacing:.03em}
.btn-solid{background:var(--air);color:var(--ink);font-weight:500;transition:background .2s}
.btn-solid:hover{background:#4FC3D8}
.btn-ghost{border:1px solid #33506A;color:#C9D6E0;transition:border-color .2s,color .2s}
.btn-ghost:hover{border-color:var(--air);color:var(--air)}
.airflow{position:absolute;inset:0;z-index:1;opacity:.9}
.airflow svg{width:100%;height:100%}
.stream{fill:none;stroke-width:1.4;stroke-linecap:round;stroke-dasharray:6 14;animation:flow 9s linear infinite}
.stream.dirty{stroke:#3A5570}
.stream.clean{stroke:var(--air);stroke-dasharray:2 18;animation-duration:7s}
.filter-grid line{stroke:#2A4560;stroke-width:1}
.filter-frame{stroke:#4FC3D8;stroke-width:1.5;fill:rgba(47,168,191,.05)}
@keyframes flow{to{stroke-dashoffset:-200}}
@media(prefers-reduced-motion:reduce){.stream{animation:none}}

/* capabilities */
.caps-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cap{background:var(--paper);padding:38px 34px;transition:background .25s}
.cap:hover{background:var(--white)}
.cap .icon{width:40px;height:40px;margin-bottom:20px}
.cap .icon svg{width:100%;height:100%;stroke:var(--air-deep);fill:none;stroke-width:1.5}
.cap h3{font-family:var(--display);font-size:19px;font-weight:600;margin-bottom:10px}
.cap p{font-size:14.5px;color:var(--steel)}
@media(max-width:720px){.caps-grid{grid-template-columns:1fr}}

/* home: featured products strip */
.strip{background:var(--white)}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.strip-card{background:var(--paper);border:1px solid var(--line);text-decoration:none;display:block;transition:border-color .2s}
.strip-card:hover{border-color:var(--air)}
.strip-card img{width:100%;aspect-ratio:1/1;object-fit:contain;background:var(--white)}
.strip-card .sc-body{padding:16px 18px 20px}
.strip-card .sc-cat{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--air-deep)}
.strip-card h3{font-family:var(--display);font-size:15px;font-weight:600;margin-top:6px;line-height:1.3}
@media(max-width:860px){.strip-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.strip-grid{grid-template-columns:1fr}}

/* about page */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:start}
.about-grid p+p{margin-top:16px}
.facts{border-left:2px solid var(--air);padding-left:28px;display:grid;gap:26px}
.fact .k{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--steel)}
.fact .v{font-family:var(--display);font-weight:600;font-size:20px;margin-top:4px}
@media(max-width:820px){.about-grid{grid-template-columns:1fr;gap:44px}}
.process{background:var(--ink);color:var(--white)}
.process .sec-head p{color:#93A8B8}
.process .eyebrow{color:var(--air)}
.steps{display:grid;grid-template-columns:repeat(5,1fr);position:relative}
.steps::before{content:"";position:absolute;top:11px;left:5%;right:5%;height:1px;background:#28425C}
.step{position:relative;padding:0 18px 0 0}
.step .dot{width:23px;height:23px;border-radius:50%;background:var(--ink);border:2px solid var(--air);position:relative;z-index:1}
.step .num{font-family:var(--mono);font-size:11px;letter-spacing:.15em;color:var(--air);margin-top:18px}
.step h4{font-family:var(--display);font-size:16px;font-weight:600;margin-top:6px}
.step p{font-size:13px;color:#93A8B8;margin-top:8px}
@media(max-width:860px){.steps{grid-template-columns:1fr;gap:30px}.steps::before{display:none}.step{display:grid;grid-template-columns:23px 1fr;gap:16px}.step .dot{margin-top:4px}.step .num{margin-top:0}}

/* products page */
.prod{padding:56px 0;border-top:1px solid var(--line)}
.prod:first-of-type{border-top:none}
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.prod:nth-of-type(even) .img-col{order:2}
@media(max-width:820px){.prod-grid{grid-template-columns:1fr;gap:36px}.prod:nth-of-type(even) .img-col{order:0}}
.img-frame{aspect-ratio:1/1;background:var(--white);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}
.img-frame img{width:100%;height:100%;object-fit:contain}
.p-cat{font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--air-deep)}
.p-name{font-family:var(--display);font-weight:700;font-size:clamp(24px,3vw,34px);line-height:1.18;letter-spacing:-.01em;margin-top:12px}
.p-model{font-family:var(--mono);font-size:13px;color:var(--steel);margin-top:8px;letter-spacing:.1em}
.p-desc{margin-top:18px;color:#33475A;font-size:15.5px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.chip{font-family:var(--mono);font-size:12px;border:1px solid var(--line);color:var(--steel);padding:7px 14px;background:var(--paper);border-radius:2px}
.p-cta{margin-top:28px;display:inline-block;font-family:var(--mono);font-size:13px;text-decoration:none;background:var(--ink);color:#fff;padding:12px 26px;border-radius:3px;transition:background .2s}
.p-cta:hover{background:var(--air-deep)}
.products-list{background:var(--white)}

/* contact page */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.contact-lines{margin-top:34px;display:grid;gap:22px}
.cl .k{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--steel)}
.cl .v{font-size:16px;margin-top:5px;line-height:1.55}
.cl .v a{color:var(--air-deep);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s}
.cl .v a:hover{border-color:var(--air-deep)}
.map-card{background:var(--white);border:1px solid var(--line);padding:40px;align-self:start}
.map-card h3{font-family:var(--display);font-size:18px;font-weight:600;margin-bottom:16px}
.map-card p{font-size:14.5px;color:var(--steel)}
.map-card p+p{margin-top:12px}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr;gap:44px}}

/* footer */
footer{background:var(--ink);color:#7E93A5;padding:44px 0;margin-top:0}
.foot{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13px}
.foot .cn{letter-spacing:.2em}
.foot a{color:#A9BCCB;text-decoration:none}
.foot a:hover{color:var(--air)}