:root{
  color-scheme:dark;
  --orange:#ff6a1a;
  --orange-light:#ff9634;
  --bg:#07090b;
  --panel:#111519;
  --panel-2:#171c21;
  --line:#2b3239;
  --text:#f6f7f8;
  --muted:#afb6bc;
  --paper:#f1f1ed;
  --max:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
a{color:inherit}
[hidden]{display:none!important}
.s3d-shell{width:min(var(--max),calc(100% - 48px));margin:0 auto}

.s3d-header{position:sticky;top:0;z-index:50;height:76px;background:rgba(6,8,10,.94);border-bottom:1px solid #222930;backdrop-filter:blur(16px)}
.s3d-header-inner{height:100%;display:flex;align-items:center;gap:28px}
.s3d-logo{display:flex;align-items:center;flex:0 0 auto}
.s3d-logo img{display:block;width:190px;height:auto;max-height:56px;object-fit:contain}
.s3d-nav{margin-left:auto;display:flex;align-items:center;gap:28px}
.s3d-nav a{text-decoration:none;text-transform:uppercase;letter-spacing:.08em;font-size:.76rem;font-weight:800;color:#d6dade}
.s3d-nav a:hover{color:var(--orange)}
.s3d-header-cta{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid var(--orange);text-decoration:none;text-transform:uppercase;letter-spacing:.08em;font-weight:900;background:#11161a}

.s3d-kicker{margin:0;color:var(--orange);font-size:.78rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase}
.s3d-button{appearance:none;border:1px solid #525c65;background:#151a1f;color:#fff;min-height:54px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;text-transform:uppercase;letter-spacing:.055em;font-weight:900;cursor:pointer;transition:transform .18s ease,border-color .18s ease,filter .18s ease}
.s3d-button:hover{transform:translateY(-2px);border-color:#87919a;filter:brightness(1.07)}
.s3d-button:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none}
.s3d-button-primary{background:linear-gradient(180deg,var(--orange-light),var(--orange));border-color:var(--orange);color:#111}
.s3d-button-wide{width:100%}
.s3d-actions{display:flex;gap:14px;flex-wrap:wrap}

.s3d-hero{position:relative;min-height:690px;display:flex;align-items:center;overflow:hidden;background-color:#080a0d;background-image:linear-gradient(90deg,#07090b 0%,#07090b 34%,rgba(7,9,11,.94) 41%,rgba(7,9,11,.52) 59%,rgba(7,9,11,.12) 78%,rgba(7,9,11,.08) 100%),linear-gradient(0deg,rgba(2,3,4,.35),rgba(2,3,4,.08)),url('/assets/springs3d/founders-hero-printers.webp?v=252');background-size:cover;background-position:center center}
.s3d-hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.027) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.027) 1px,transparent 1px);background-size:40px 40px;mask-image:linear-gradient(90deg,#000 0%,rgba(0,0,0,.75) 45%,transparent 80%);pointer-events:none}
.s3d-hero-inner{position:relative;z-index:1;padding:78px 0 64px}
.s3d-hero-copy{width:min(650px,58vw)}
.s3d-hero h1{margin:14px 0 20px;font-size:clamp(3.7rem,7.1vw,7rem);line-height:.88;letter-spacing:-.065em;text-transform:uppercase;max-width:650px}
.s3d-lead{max-width:620px;margin:0 0 28px;color:#d2d7db;font-size:clamp(1.08rem,1.5vw,1.3rem);line-height:1.65}
.s3d-proof{display:flex;flex-wrap:wrap;gap:22px;margin:26px 0 0;color:#e0e4e7;font-size:.95rem}
.s3d-proof span{display:inline-flex;align-items:center;gap:9px}
.s3d-proof span:before{content:"";width:10px;height:10px;border:2px solid var(--orange);border-radius:50%;box-shadow:0 0 0 4px rgba(255,106,26,.12)}
.s3d-campaign-status{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:28px;max-width:760px}
.s3d-campaign-status>div:not(.s3d-progress){min-height:78px;padding:12px 14px;background:rgba(12,15,18,.82);border:1px solid rgba(255,255,255,.12)}
.s3d-campaign-status span{display:block;color:#9ca5ac;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}
.s3d-campaign-status strong{display:block;color:#fff;font-size:.98rem;line-height:1.3}
.s3d-progress{grid-column:1/-1;height:9px;background:#2a3036;overflow:hidden}
.s3d-progress i{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--orange),#ffb13c);transition:width .35s ease}

.s3d-offers{padding:92px 0 64px;background:#090c0f}
.s3d-section-heading{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:54px;align-items:end;margin-bottom:34px}
.s3d-section-heading h2{margin:8px 0 0;font-size:clamp(2.7rem,5vw,5.1rem);line-height:.9;letter-spacing:-.055em;text-transform:uppercase}
.s3d-section-heading>p{margin:0;color:var(--muted);font-size:1.08rem;line-height:1.7}
.s3d-offer-layout{display:grid;grid-template-columns:minmax(420px,.86fr) minmax(0,1.14fr);gap:20px;align-items:stretch}
.s3d-filament-image{min-height:620px;background:linear-gradient(0deg,rgba(0,0,0,.26),rgba(0,0,0,.08)),url('/assets/springs3d/founders-filament-spools.webp?v=252') center/cover no-repeat;border:1px solid #30373e;box-shadow:0 24px 80px rgba(0,0,0,.35)}
.s3d-pack-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.s3d-pack-card{position:relative;min-width:0;background:linear-gradient(180deg,#171c21,#0e1216);border:1px solid #343c44;padding:30px;display:flex;flex-direction:column;box-shadow:0 24px 80px rgba(0,0,0,.28)}
.s3d-pack-featured{border-color:rgba(255,106,26,.64)}
.s3d-best-value{position:absolute;top:0;right:0;background:var(--orange);color:#111;padding:7px 11px;text-transform:uppercase;font-size:.68rem;font-weight:900;letter-spacing:.08em}
.s3d-pack-top{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;color:#9fa8af;text-transform:uppercase;font-size:.71rem;font-weight:800;letter-spacing:.08em}
.s3d-pack-top b{color:var(--orange);text-align:right}
.s3d-pack-card h3{margin:22px 0 16px;font-size:clamp(2rem,2.8vw,3.5rem);line-height:.92;letter-spacing:-.05em;text-transform:uppercase}
.s3d-pack-card>p{margin:0;color:#c2c8cd;line-height:1.65}
.s3d-price{display:flex;flex-direction:column;gap:3px;margin:24px 0 18px;padding:18px 0;border-top:1px solid #3a4249;border-bottom:1px solid #3a4249}
.s3d-price strong{font-size:clamp(2.6rem,4vw,4rem);line-height:1}
.s3d-price span{color:#aab1b7;font-size:.82rem;text-transform:uppercase;letter-spacing:.07em}
.s3d-pack-card ul{list-style:none;margin:0 0 28px;padding:0;display:grid;gap:11px;color:#e3e6e8}
.s3d-pack-card li{display:flex;gap:10px;line-height:1.45}
.s3d-pack-card li:before{content:"+";color:var(--orange);font-weight:900}
.s3d-pack-card .s3d-button{margin-top:auto}
.s3d-pack-card.sold-out{opacity:.55}
.s3d-pack-card.sold-out .s3d-button{pointer-events:none}

.s3d-benefits{padding:0 0 92px;background:#090c0f}
.s3d-benefit-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.s3d-benefit-grid article{padding:24px;background:#11161a;border:1px solid #30373e;border-top:2px solid rgba(255,106,26,.52)}
.s3d-benefit-grid h3{margin:0 0 8px;font-size:1.4rem;line-height:1.1}
.s3d-benefit-grid p{margin:0;color:#aeb6bc;line-height:1.55}

.s3d-checkout-section{padding:92px 0;background:#0c1013;border-top:1px solid #20262b}
.s3d-checkout-heading>p{color:#aeb6bc}
.s3d-closed{padding:28px;background:#14191e;border:1px solid var(--orange);margin-bottom:20px}
.s3d-checkout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px;align-items:start}
.s3d-form-main{display:grid;gap:16px}
.s3d-fieldset{margin:0;padding:24px;border:1px solid var(--line);background:#12171b}
.s3d-fieldset legend{padding:0 9px;color:#fff;text-transform:uppercase;letter-spacing:.08em;font-weight:900}
.s3d-pack-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.s3d-choice{position:relative;display:block;padding:17px;background:#0a0d10;border:1px solid #394149;cursor:pointer}
.s3d-choice:has(input:checked){border-color:var(--orange);box-shadow:inset 0 0 0 1px var(--orange)}
.s3d-choice input{position:absolute;opacity:0}
.s3d-choice span{display:flex;justify-content:space-between;gap:14px;color:#fff}
.s3d-choice small{color:var(--orange);font-weight:900;white-space:nowrap}
.s3d-fields{display:grid;gap:12px;margin-top:12px}
.s3d-two{grid-template-columns:repeat(2,minmax(0,1fr))}
.s3d-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.s3d-four{grid-template-columns:1fr 1fr 80px 120px}
.s3d-label{display:grid;gap:7px;margin-top:12px;color:#d8dde0;font-size:.84rem;font-weight:800}
.s3d-label>span{color:#808990;font-weight:500}
.s3d-label input,.s3d-label select,.s3d-label textarea{width:100%;min-height:48px;padding:12px 13px;border:1px solid #3a434b;background:#080b0e;color:#fff;border-radius:0}
.s3d-label textarea{min-height:105px;resize:vertical}
.s3d-label input:focus,.s3d-label select:focus,.s3d-label textarea:focus{outline:2px solid var(--orange);outline-offset:1px}
.s3d-check{display:flex;gap:11px;align-items:flex-start;margin-top:17px;color:#c8ced2;line-height:1.55}
.s3d-check input{width:20px;height:20px;flex:0 0 auto;accent-color:var(--orange)}
.quantity-field{max-width:330px}
.s3d-terms{border-color:#5e463a}
.s3d-review{position:sticky;top:96px;padding:26px;background:var(--paper);color:#111;border-top:6px solid var(--orange);box-shadow:0 24px 70px rgba(0,0,0,.25)}
.s3d-review h3{margin:8px 0 22px;font-size:1.8rem;line-height:1;text-transform:uppercase;letter-spacing:-.035em}
.s3d-review-row,.s3d-review-total{display:flex;justify-content:space-between;gap:16px;align-items:center}
.s3d-review-row{padding:11px 0;border-bottom:1px solid #d0d1cc}
.s3d-review-total{padding:18px 0;font-size:1.25rem}
.s3d-review-total strong{font-size:2rem}
.s3d-deadline{padding:12px;background:#fff;line-height:1.5;font-size:.86rem}
.s3d-message{min-height:24px;margin:10px 0;color:#a32929;font-weight:800;font-size:.88rem}
.s3d-message.good{color:#1a6a3f}
.s3d-review small{display:block;margin-top:11px;color:#646a6e;line-height:1.5}

.s3d-service-cta{padding:78px 0;background:#14191e;border-top:1px solid #272e34}
.s3d-service-cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:42px;align-items:center}
.s3d-service-cta h2{margin:8px 0 12px;font-size:clamp(2.4rem,4vw,4.5rem);line-height:.93;letter-spacing:-.05em;text-transform:uppercase}
.s3d-service-cta p:not(.s3d-kicker){margin:0;color:#b5bdc3;max-width:760px;font-size:1.05rem;line-height:1.65}
.s3d-footer{padding:26px 0;background:#06080a;border-top:1px solid #20262b;color:#939ca3;font-size:.86rem}
.s3d-footer .s3d-shell{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.s3d-footer a{color:#d8dde0;text-decoration:none}

@media(max-width:1100px){
  .s3d-nav{gap:18px}
  .s3d-offer-layout{grid-template-columns:1fr}
  .s3d-filament-image{min-height:440px}
  .s3d-benefit-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px){
  .s3d-shell{width:min(var(--max),calc(100% - 32px))}
  .s3d-header{height:auto;min-height:72px}
  .s3d-header-inner{padding:10px 0;flex-wrap:wrap}
  .s3d-nav{order:3;width:100%;margin:0;overflow-x:auto;padding-bottom:2px}
  .s3d-header-cta{margin-left:auto}
  .s3d-hero{min-height:720px;background-image:linear-gradient(0deg,#07090b 0%,rgba(7,9,11,.98) 38%,rgba(7,9,11,.5) 67%,rgba(7,9,11,.15) 100%),url('/assets/springs3d/founders-hero-printers.webp?v=252');background-position:center center}
  .s3d-hero-inner{padding:70px 0 46px}
  .s3d-hero-copy{width:100%;max-width:700px}
  .s3d-section-heading,.s3d-service-cta-inner{grid-template-columns:1fr;gap:20px}
  .s3d-pack-grid{grid-template-columns:1fr}
  .s3d-checkout{grid-template-columns:1fr}
  .s3d-review{position:static}
  .s3d-three,.s3d-four{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:600px){
  .s3d-logo img{width:150px}
  .s3d-header-cta{min-height:40px;padding:0 14px;font-size:.78rem}
  .s3d-nav{gap:16px}
  .s3d-nav a{font-size:.68rem;white-space:nowrap}
  .s3d-hero{min-height:760px}
  .s3d-hero h1{font-size:3.65rem}
  .s3d-actions .s3d-button{width:100%}
  .s3d-campaign-status{grid-template-columns:repeat(2,minmax(0,1fr))}
  .s3d-offers,.s3d-checkout-section{padding:68px 0}
  .s3d-filament-image{min-height:300px}
  .s3d-pack-card{padding:23px}
  .s3d-benefit-grid,.s3d-pack-choices,.s3d-two,.s3d-three,.s3d-four{grid-template-columns:1fr}
  .s3d-fieldset{padding:18px}
}