:root{--bg:#05070a;--panel:#0b1016;--panel2:#0e151d;--line:#1b2732;--text:#f5f7fa;--muted:#94a2af;--blue:#078bff;--blue2:#16a4ff;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,sans-serif;line-height:1.55}.container{width:min(calc(100% - 40px),var(--max));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(5,7,10,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.06)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:900;letter-spacing:1px}.brand-mark{width:31px;height:31px;display:grid;place-items:center;border:2px solid var(--blue);color:var(--blue);font-family:Rajdhani,sans-serif;font-weight:700;clip-path:polygon(0 0,100% 0,72% 50%,100% 100%,0 100%)}.blue{color:var(--blue)}.nav-links{display:flex;align-items:center;gap:27px}.nav-links a{color:#cbd4dc;text-decoration:none;font-size:14px;font-weight:600}.nav-links a:hover{color:#fff}.nav-cta{border:1px solid #167fd0;padding:10px 15px;border-radius:6px;background:rgba(7,139,255,.12);color:#fff!important}.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px}.hero{position:relative;overflow:hidden;min-height:720px;display:flex;align-items:center;border-bottom:1px solid var(--line)}.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:50px 50px;mask-image:linear-gradient(to bottom,black,transparent)}.hero:after{content:"";position:absolute;width:650px;height:650px;border-radius:50%;background:rgba(0,125,255,.12);filter:blur(90px);right:-180px;top:30px}.hero-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr .9fr;gap:50px;align-items:center}.eyebrow{font-family:Rajdhani,sans-serif;font-weight:700;letter-spacing:3px;color:var(--blue);font-size:13px;margin:0 0 13px}.hero h1{font-size:clamp(50px,7vw,90px);line-height:.92;letter-spacing:-4px;margin:0 0 25px;font-weight:900}.hero h1 span,h2 span{color:var(--blue)}.lead{font-size:18px;color:#aeb9c3;max-width:590px}.hero-actions{display:flex;gap:12px;margin:32px 0}.btn{display:inline-flex;align-items:center;gap:22px;padding:14px 20px;text-decoration:none;font-weight:800;border-radius:5px;transition:.2s}.btn.primary{background:var(--blue);color:#fff;box-shadow:0 8px 30px rgba(7,139,255,.2)}.btn.primary:hover{transform:translateY(-2px);background:#1598ff}.btn.ghost{color:#fff;border:1px solid #34424f}.hero-stats{display:flex;gap:32px;border-top:1px solid var(--line);padding-top:22px;max-width:600px}.hero-stats div{display:flex;flex-direction:column}.hero-stats strong{font-family:Rajdhani;font-size:25px}.hero-stats span{color:#73808c;font-size:11px;text-transform:uppercase;letter-spacing:1px}.hero-art{height:480px;position:relative;display:grid;place-items:center}.glow{position:absolute;width:310px;height:310px;border-radius:50%;background:var(--blue);opacity:.12;filter:blur(70px)}.spool{position:relative;width:340px;height:340px;border:26px solid #18232e;border-radius:50%;box-shadow:inset 0 0 0 10px #0a0f14,0 0 0 1px #273541,0 0 80px rgba(7,139,255,.16)}.spool:before,.spool:after{content:"";position:absolute;inset:22px;border:18px solid #101820;border-radius:50%}.spool:after{inset:67px;border:16px solid #28343e}.spool-ring{position:absolute;inset:92px;border-radius:50%;background:#05070a;border:10px solid #36434d}.spool-core{position:absolute;width:62px;height:62px;left:calc(50% - 31px);top:calc(50% - 31px);border-radius:50%;background:var(--blue);box-shadow:0 0 30px rgba(7,139,255,.5)}.filament-line{position:absolute;width:200px;height:7px;right:-150px;top:55px;background:var(--blue);border-radius:99px;transform:rotate(-20deg);box-shadow:0 0 20px rgba(7,139,255,.5)}.hero-badge{position:absolute;bottom:45px;right:10px;border:1px solid #25333e;background:rgba(7,12,17,.82);padding:14px 18px;font-family:Rajdhani;font-weight:700;letter-spacing:2px}.hero-badge span{color:var(--blue);font-size:11px}.marquee{overflow:hidden;white-space:nowrap;border-bottom:1px solid var(--line);color:#60717e;font-family:Rajdhani;font-weight:700;letter-spacing:4px;padding:15px 0}.marquee div{text-align:center;font-size:13px}.marquee span{color:var(--blue);padding:0 12px}.section{padding:105px 0}.section-head{display:flex;justify-content:space-between;gap:60px;align-items:end;margin-bottom:45px}.section h2,.dark-section h2,.cta-box h2{font-size:clamp(40px,5vw,62px);letter-spacing:-2px;line-height:1;margin:0}.section-head>p{max-width:430px;color:var(--muted);margin:0}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.product-card{background:linear-gradient(145deg,#0b1117,#080c11);border:1px solid #1a2630;padding:22px;min-height:500px;display:flex;flex-direction:column;transition:.25s}.product-card:hover{transform:translateY(-6px);border-color:#245273}.product-card.featured{border-color:#1268a4;box-shadow:0 0 0 1px rgba(7,139,255,.1) inset}.product-top,.card-foot{display:flex;justify-content:space-between;align-items:center}.pill{font-size:10px;letter-spacing:2px;color:var(--blue);border:1px solid #14588a;padding:5px 8px}.temp{font-size:11px;color:#697784}.spool-card{height:220px;display:grid;place-items:center;position:relative}.mini-spool{width:150px;height:150px;border-radius:50%;background:#111a22;border:18px solid #27343e;box-shadow:inset 0 0 0 8px #080d12}.mini-spool:before{content:"";position:absolute;width:80px;height:80px;border-radius:50%;border:13px solid #35424c}.mini-spool i{width:34px;height:34px;border-radius:50%;background:var(--blue);display:block;position:absolute;box-shadow:0 0 25px rgba(7,139,255,.5)}.pla .mini-spool{filter:drop-shadow(0 12px 20px rgba(255,255,255,.08))}.petg .mini-spool{border-color:#31556d}.tpu .mini-spool{border-color:#273f5a}.product-card h3{font-family:Rajdhani;font-size:26px;margin:0 0 7px;letter-spacing:1px}.product-card p{color:#84919d;font-size:14px;margin:0 0 25px}.card-foot{margin-top:auto;border-top:1px solid var(--line);padding-top:18px}.card-foot strong{font-family:Rajdhani;color:#cdd6dd}.card-foot a{color:var(--blue);text-decoration:none;font-size:13px;font-weight:800}.dark-section{padding:110px 0;background:#080c11;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:90px}.large-copy{color:#8796a2;font-size:18px;max-width:520px;margin-top:25px}.feature-list{border-top:1px solid var(--line)}.feature{display:grid;grid-template-columns:50px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}.feature b{color:var(--blue);font-family:Rajdhani;font-size:17px}.feature h3{margin:0 0 4px;font-family:Rajdhani;font-size:22px}.feature p{margin:0;color:#7e8b97;font-size:14px}.spec-table{border:1px solid var(--line)}.spec-row{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr 1.4fr;border-bottom:1px solid var(--line);padding:18px 20px;gap:15px;color:#9aa7b2;font-size:14px}.spec-row:last-child{border:0}.spec-row.head{background:#0b1117;color:#667682;font-family:Rajdhani;text-transform:uppercase;letter-spacing:2px;font-size:11px}.spec-row strong{color:#fff;font-family:Rajdhani;font-size:17px}.cta-section{padding:30px 0 100px}.cta-box{border:1px solid #164d73;background:radial-gradient(circle at 80% 50%,rgba(7,139,255,.12),transparent 40%),#091016;padding:55px;display:flex;align-items:center;justify-content:space-between;gap:40px}.cta-box p:not(.eyebrow){color:#8e9ba7;max-width:600px}.cta-box h2{font-size:50px}footer{border-top:1px solid var(--line);padding:35px 0}.footer{display:grid;grid-template-columns:1fr auto auto;gap:40px;align-items:center}.footer strong{font-size:20px}.footer p{font-size:10px;color:#697783;letter-spacing:3px;margin:2px 0}.footer-links{display:flex;gap:20px}.footer a{color:#84919c;text-decoration:none;font-size:13px}.footer>span{color:#586673;font-size:12px}@media(max-width:900px){.nav-links{display:none}.menu-toggle{display:block}.nav-links.open{display:flex;position:absolute;top:76px;left:0;right:0;background:#070b0f;border-bottom:1px solid var(--line);padding:20px;flex-direction:column;align-items:stretch}.nav-links.open .nav-cta{text-align:center}.hero-content,.split{grid-template-columns:1fr}.hero{padding:80px 0}.hero-art{height:350px}.section-head{align-items:start;flex-direction:column;gap:20px}.product-grid{grid-template-columns:1fr}.spec-row{grid-template-columns:1fr 1fr}.spec-row.head{display:none}.spec-row span:last-child{grid-column:1/-1}.cta-box{flex-direction:column;align-items:flex-start}.footer{grid-template-columns:1fr}.footer-links{flex-wrap:wrap}}@media(max-width:520px){.container{width:min(calc(100% - 28px),var(--max))}.hero h1{font-size:52px;letter-spacing:-3px}.hero-actions{flex-direction:column}.hero-stats{gap:15px}.hero-stats strong{font-size:20px}.hero-art{transform:scale(.82);margin:-30px 0}.section,.dark-section{padding:75px 0}.cta-box{padding:32px}.cta-box h2{font-size:40px}.spec-row{font-size:13px}}

/* Contact form */
.contact-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:56px;align-items:start}
.contact-copy h2{margin-top:8px}.contact-copy>p{max-width:540px;color:var(--muted,#9aa3ad);line-height:1.7}
.contact-note{margin-top:28px;padding:16px 18px;border:1px solid rgba(45,139,255,.25);background:rgba(45,139,255,.06);border-radius:12px;color:var(--muted,#9aa3ad);font-size:.9rem;line-height:1.55}.contact-note strong{color:#fff}
.contact-form{position:relative;padding:28px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.035);border-radius:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field{display:flex;flex-direction:column;gap:8px}.field.full{grid-column:1/-1}.field label{font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#d9e1e8}.field label span{color:#278cff}
.field input,.field select,.field textarea{width:100%;box-sizing:border-box;border:1px solid rgba(255,255,255,.14);border-radius:9px;background:#0b0e12;color:#fff;padding:13px 14px;font:inherit;outline:none;transition:border-color .2s,box-shadow .2s}.field textarea{resize:vertical;min-height:150px}.field input:focus,.field select:focus,.field textarea:focus{border-color:#278cff;box-shadow:0 0 0 3px rgba(39,140,255,.12)}
.form-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:20px}.form-status{margin:0;min-height:1.3em;color:var(--muted,#9aa3ad);font-size:.9rem}.form-status.success{color:#65d48a}.form-status.error{color:#ff7d7d}.hp-field{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}
@media(max-width:850px){.contact-layout{grid-template-columns:1fr;gap:30px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}}
@media(max-width:520px){.contact-form{padding:20px}.form-bottom{align-items:stretch;flex-direction:column}.form-bottom .btn{justify-content:center}}

/* Header logo */
.brand{display:flex;align-items:center;text-decoration:none}.header-logo{display:block;width:190px;height:58px;object-fit:contain;object-position:left center}@media(max-width:520px){.header-logo{width:155px;height:50px}}

/* Official uploaded Polytron3D brand assets */
.header-logo{width:220px;height:54px;object-fit:contain;object-position:left center}.footer-brand-mark{display:block;width:64px;height:42px;object-fit:contain;object-position:left center}@media(max-width:520px){.header-logo{width:175px;height:46px}.footer-brand-mark{width:56px;height:38px}}