/* Last Tag Co. — industrial spec-sheet direction */
:root{
  --ink:#16181b; --ink-2:#2a2e33; --steel-1:#f3f4f5; --steel-2:#e4e6e9; --steel-3:#c9cdd2; --steel-4:#8c9198;
  --muted:#5b6168; --accent:#ffd23f; --accent-ink:#1b1d20; --line:#d6d9dd; --bg:#fafaf9;
  --radius:10px; --wrap:1160px;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--sans);overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{line-height:1.08;margin:0 0 .5em;letter-spacing:-.02em}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:var(--accent);padding:8px 12px;z-index:100;font-weight:600}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}

.eyebrow{font:500 13px/1.2 var(--mono);text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-bottom:14px}
.section-title{font-size:clamp(30px,4.2vw,48px);font-weight:700;max-width:18ch}
section{padding:clamp(72px,10vw,128px) 0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;text-decoration:none;font:600 16px/1 var(--sans);padding:16px 22px;border-radius:999px;border:2px solid var(--ink);cursor:pointer;transition:transform .2s var(--ease),background .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px -10px rgba(0,0,0,.5)}
.btn:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-small{padding:10px 16px;font-size:14px}
.text-link{font-weight:600;text-decoration-thickness:2px;text-underline-offset:4px;text-decoration-color:var(--accent)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,250,249,.86);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.scrolled{border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 17px/1 var(--mono);letter-spacing:.08em}
.wordmark em{font-style:normal;color:var(--muted)}
.wordmark-tag{width:30px;height:18px}
.wordmark-tag rect{fill:var(--steel-3);stroke:var(--ink);stroke-width:2}
.wordmark-tag circle{fill:var(--bg);stroke:var(--ink);stroke-width:1.6}
.nav ul{display:flex;align-items:center;gap:26px;list-style:none;margin:0;padding:0}
.nav a:not(.btn){text-decoration:none;font-weight:500;font-size:15px;color:var(--ink-2)}
.nav a:not(.btn):hover{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:3px;text-underline-offset:6px}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;position:relative;cursor:pointer}
.nav-toggle i{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);transition:transform .25s var(--ease)}
.nav-toggle i:first-of-type{top:17px}.nav-toggle i:last-of-type{top:25px}
.nav-toggle[aria-expanded=true] i:first-of-type{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded=true] i:last-of-type{transform:translateY(-4px) rotate(-45deg)}

/* hero */
.hero{padding-top:clamp(40px,7vw,88px);background:repeating-linear-gradient(0deg,transparent 0 39px,rgba(22,24,27,.04) 39px 40px),repeating-linear-gradient(90deg,transparent 0 39px,rgba(22,24,27,.04) 39px 40px),var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(46px,7.4vw,92px);font-weight:700;letter-spacing:-.035em;margin-bottom:22px}
.lede{font-size:clamp(18px,1.6vw,20px);color:var(--ink-2);max-width:34em}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 34px}
.proof-chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px}
.proof-chips li{font:400 13.5px/1.3 var(--mono);background:#fff;border:1px solid var(--line);border-radius:6px;padding:9px 12px}
.proof-chips strong{font-weight:600}
.proof-chips span{color:var(--muted)}
.hero-tag{margin:0;position:relative}
.tag-svg{width:100%;max-width:460px;margin:0 auto;filter:drop-shadow(0 28px 40px rgba(22,24,27,.22))}
.hero-tag figcaption{display:flex;justify-content:space-between;gap:12px;max-width:460px;margin:14px auto 0;font:500 12px/1.3 var(--mono);letter-spacing:.06em;color:var(--muted);border-top:1px dashed var(--steel-3);padding-top:10px}
.laser{opacity:0}
.tag-svg.is-marking .laser{opacity:1}
.laser-dot{animation:flicker .12s steps(2) infinite}
@keyframes flicker{50%{opacity:.75}}

/* problem */
.problem{background:var(--ink);color:#e9ebee}
.problem .section-title{color:#fff}
.problem-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.problem-list{display:grid;gap:28px}
.problem-list div{display:grid;grid-template-columns:52px 1fr;gap:14px;border-top:1px solid #33383e;padding-top:22px}
.problem-list .num{font:600 15px/1.6 var(--mono);color:var(--accent)}
.problem-list p{margin:0;color:#c3c8ce}
.problem-list strong{color:#fff}

/* products */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
.product{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;transition:transform .3s var(--ease),box-shadow .3s}
.product:hover{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(22,24,27,.45)}
.product svg{width:100%;height:132px;margin-bottom:18px;background:linear-gradient(180deg,var(--steel-1),var(--steel-2));border-radius:8px;padding:8px}
.product h3{font-size:21px}
.product p{color:var(--ink-2);font-size:15.5px}
.spec-list{list-style:none;padding:14px 0 0;margin:auto 0 0;border-top:1px dashed var(--steel-3);font:400 13px/1.7 var(--mono);color:var(--muted)}
.spec-list li::before{content:"— ";color:var(--steel-4)}
.p-metal{fill:url(#steel);fill:#d5d9dd;stroke:#8c9198;stroke-width:1.5}
.p-hole{fill:#fff;stroke:#8c9198;stroke-width:1.2}
.p-ink{fill:#1b1d20;font-family:var(--mono);font-weight:600;text-anchor:middle}
.p-lg{font-size:30px}.p-sm{font-size:13px;letter-spacing:.06em}.p-xs{font-size:8px;letter-spacing:.08em}
.p-kit{font-size:10px}.p-kit2{font-size:8px}
.p-qr{fill:#1b1d20;stroke:#fff;stroke-width:3;stroke-dasharray:4 3}
.p-rule{stroke:#1b1d20;stroke-width:1}
.p-adh{stroke:#e0b100;stroke-width:4}

/* methods */
.methods{background:var(--steel-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.methods-table{margin-top:40px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.m-row{display:grid;grid-template-columns:1.1fr 1.2fr 1.4fr;gap:20px;padding:20px 24px;border-top:1px solid var(--line);align-items:center}
.m-row:first-child{border-top:0}
.m-head{background:var(--ink);color:#fff;font:500 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;padding:14px 24px}
.m-row b{display:block;font-size:17px}
.m-row small{font:400 12.5px/1.4 var(--mono);color:var(--muted)}
.m-row span{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.m-row span:first-child{display:block}
.swatch{width:46px;height:28px;border-radius:5px;flex:none;border:1px solid var(--steel-4);background:linear-gradient(135deg,#e6e8eb,#c4c8cd)}
.swatch::after{content:"104";display:flex;height:100%;align-items:center;justify-content:center;font:600 13px/1 var(--mono)}
.s-etch::after{color:#5d6168}
.s-anneal::after{color:#121314}
.s-ceramic::after{color:#000;text-shadow:0 0 .5px #000}
.s-enamel::after{color:#c8102e}

/* proof */
.proof-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:center}
.proof-photo{margin:0}
.proof-photo img{border-radius:var(--radius);aspect-ratio:4/5;object-fit:cover;width:100%;height:auto;box-shadow:0 30px 60px -36px rgba(22,24,27,.6)}
.proof-photo figcaption,.fine{font:400 13px/1.5 var(--mono);color:var(--muted);margin-top:12px}
.proof-copy>p{color:var(--ink-2)}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:0;margin:28px 0;border-top:2px solid var(--ink)}
.stats div{padding:18px 16px 18px 0;border-bottom:1px solid var(--line)}
.stats div:nth-child(odd){padding-right:20px;border-right:1px solid var(--line)}
.stats div:nth-child(even){padding-left:20px}
.stats dt{font:600 clamp(24px,2.6vw,32px)/1.1 var(--mono);letter-spacing:-.02em;margin-bottom:6px}
.stats dd{margin:0;font-size:14.5px;color:var(--muted)}

/* process */
.process{background:var(--ink);color:#e9ebee}
.process .section-title{color:#fff}
.process .eyebrow{color:#9aa1a9}
.steps{list-style:none;padding:0;margin:48px 0 0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;top:22px;left:22px;right:22px;height:2px;background:linear-gradient(90deg,var(--accent) var(--progress,0%),#3a3f45 var(--progress,0%))}
.steps li{position:relative;padding-right:24px}
.steps span{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;background:var(--ink);border:2px solid #4a5058;font:600 16px/1 var(--mono);color:#fff;position:relative;margin-bottom:22px;transition:background .4s,border-color .4s,color .4s}
.steps li.lit span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.steps h3{font-size:20px;color:#fff}
.steps p{color:#b9bfc6;font-size:15.5px}

/* sample */
.sample{background:var(--accent);color:var(--accent-ink)}
.sample .eyebrow{color:#5a4a00}
.sample-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.sample p{font-size:18px;max-width:34em}
.kit{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.kit li{background:rgba(255,255,255,.55);border:1px solid rgba(0,0,0,.12);border-radius:var(--radius);padding:16px 12px;text-align:center;font:600 13px/1.3 var(--mono)}
.kit svg{width:100%;height:84px;margin-bottom:10px}

/* shop */
.shop-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:64px;align-items:center}
.shop-photo{margin:0}
.shop-photo img{border-radius:var(--radius);aspect-ratio:3/4;object-fit:cover;object-position:50% 40%;width:100%;height:auto}
.shop p{color:var(--ink-2);max-width:36em}
.contact-line{font:500 16px/1.7 var(--mono)}
.contact-line a{text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}

/* faq */
.faq{background:var(--steel-1);border-top:1px solid var(--line)}
.faq-wrap{max-width:860px}
.faq details{border-top:1px solid var(--line);padding:4px 0}
.faq details:last-of-type{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;font-weight:600;font-size:18px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:14px;font:400 28px/1 var(--mono);transition:transform .25s var(--ease)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--ink-2);padding-bottom:16px;max-width:60ch}

/* quote */
.quote-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.quote-intro p{color:var(--ink-2)}
.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:clamp(20px,3vw,34px);box-shadow:0 30px 60px -44px rgba(22,24,27,.5)}
.field{display:flex;flex-direction:column;gap:6px}
.field-wide{grid-column:1/-1}
.field label{font:500 13px/1.2 var(--mono);letter-spacing:.04em;text-transform:uppercase;color:var(--ink-2)}
.field small{text-transform:none;color:var(--muted)}
input,select,textarea{font:400 16px/1.4 var(--sans);color:var(--ink);background:var(--bg);border:1.5px solid var(--steel-3);border-radius:8px;padding:12px 13px;width:100%;transition:border-color .2s,box-shadow .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(255,210,63,.6)}
.field.invalid input,.field.invalid select{border-color:#b42318}
.field .err{font-size:13px;color:#b42318}
.check{display:flex;align-items:center;gap:10px;font-weight:500}
.check input{width:20px;height:20px;accent-color:var(--ink)}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.form-status{margin:0;font-size:15px;color:var(--ink-2)}
.form-status.ok{color:#11653a}.form-status.bad{color:#b42318}

/* footer */
.site-footer{background:var(--ink);color:#c3c8ce;padding:56px 0 40px}
.site-footer .wordmark{color:#fff}
.site-footer .wordmark-tag rect{fill:var(--steel-3);stroke:#fff}
.site-footer .wordmark-tag circle{fill:var(--ink);stroke:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:28px}
.footer-grid p{font-size:15px;margin-top:16px}
.footer-links{display:flex;flex-wrap:wrap;gap:12px 22px;justify-content:flex-end;align-items:flex-start;font-weight:500}
.footer-links a{text-decoration:none}.footer-links a:hover{color:#fff;text-decoration:underline}
.copy{grid-column:1/-1;border-top:1px solid #33383e;padding-top:20px;font:400 13px/1.4 var(--mono);color:#8b9199}

/* reveal on scroll */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* responsive */
@media (max-width:1020px){
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .hero-grid,.proof-grid,.problem-grid,.sample-grid,.shop-grid,.quote-grid{grid-template-columns:1fr}
  .hero-tag{max-width:360px;margin:0 auto;width:100%}
  .shop-photo{max-width:420px}
  .steps{grid-template-columns:1fr 1fr;gap:36px 0}
  .steps::before{display:none}
}
@media (max-width:760px){
  body{font-size:16px}
  .wrap{padding:0 16px}
  .nav-toggle{display:block}
  .nav ul{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px 18px;transform:translateY(-8px);opacity:0;visibility:hidden;transition:.25s var(--ease)}
  .nav ul.open{transform:none;opacity:1;visibility:visible}
  .nav li a:not(.btn){display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:17px}
  .nav .btn{margin-top:14px;justify-content:center;width:100%}
  .product-grid{grid-template-columns:1fr}
  .m-row{grid-template-columns:1fr;gap:8px}
  .m-head{display:none}
  .stats{grid-template-columns:1fr}
  .stats div:nth-child(odd),.stats div:nth-child(even){padding:16px 0;border-right:0}
  .steps{grid-template-columns:1fr}
  .kit{grid-template-columns:repeat(3,1fr);gap:8px}
  .quote-form{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
  .cta-row .btn{flex:1 1 auto;justify-content:center}
  .hero-tag{max-width:280px}
  .hero-grid{gap:28px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}