/* Shared chrome for product.html and checkout.html.
   Tokens mirror the <style> block in index.html — keep them in sync if you
   change the palette there. */
:root{
  --ink:#111111; --bg:#F1F1EE; --surface:#FFFFFF; --muted:#484848;
  --volt:#C6F91F; --line:#DEDED8; --bad:#B3261E;
  /* --line is a hairline for decorative separators and sits well below the
     3:1 WCAG asks of a control boundary. Form controls use --line-strong. */
  --line-strong:#87877F;
  --rule:1px solid var(--ink);
  --dur:180ms; --ease:cubic-bezier(.4,0,.2,1);
  --container:1440px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,sans-serif;font-size:1rem;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:inherit}
ul,ol{list-style:none}
h1,h2,h3{font-family:'Instrument Sans',system-ui,sans-serif;font-weight:600;line-height:1.05;letter-spacing:-.03em}
.t-h1{font-size:clamp(2rem,4.4vw,3.2rem)}
.t-h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.t-h3{font-size:1.15rem}
.lead{font-size:clamp(.98rem,1.2vw,1.08rem);line-height:1.6;color:var(--muted)}
.data{font-family:'IBM Plex Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}
.eyebrow{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.15em}
.muted{color:var(--muted)}
:focus-visible{outline:3px solid var(--ink);outline-offset:2px}
.skip{position:absolute;left:0;top:-100px;z-index:200;background:var(--ink);color:var(--volt);padding:14px 22px;font-weight:700;text-decoration:none}
.skip:focus{top:0}
.wrap{max-width:var(--container);margin-inline:auto}
.pad{padding-inline:clamp(20px,3.5vw,48px)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:0 26px;border:0;border-radius:0;background:var(--ink);color:#fff;font:600 .875rem/1 'Inter',sans-serif;text-transform:uppercase;letter-spacing:.08em;text-decoration:none;cursor:pointer;white-space:nowrap;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease)}
.btn:hover:not(:disabled){background:var(--volt);color:var(--ink)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-volt{background:var(--volt);color:var(--ink)}
.btn-volt:hover:not(:disabled){background:#fff}
.btn-outline{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn-outline:hover:not(:disabled){background:var(--ink);color:#fff}
.btn-full{width:100%}
.btn .arw{transition:transform var(--dur) var(--ease)}
.btn:hover .arw{transform:translateX(4px)}

.crumb{padding-block:16px;font-size:.8rem;color:var(--muted)}
.crumb a{text-decoration:none;border-bottom:1px solid var(--line)}

.panel{background:var(--surface);border:var(--rule)}
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.09em;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;min-height:50px;padding:12px 14px;border:1px solid var(--line-strong);border-radius:0;background:#fff;font:400 1rem/1.4 'Inter',sans-serif;color:var(--ink)}
.field textarea{min-height:88px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid var(--ink);outline-offset:-1px;border-color:var(--ink)}
.field.err input,.field.err select{border-color:var(--bad);border-width:2px}
.field .msg{display:none;color:var(--bad);font-size:.82rem;margin-top:5px}
.field.err .msg{display:block}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
@media (max-width:560px){.row2{grid-template-columns:1fr}}

.notice{padding:14px 16px;border-left:4px solid var(--bad);background:#fff;color:var(--bad);font-size:.9rem;margin-bottom:16px}
.notice[hidden]{display:none}

.footer{background:var(--surface);border-top:var(--rule);margin-top:64px;padding-block:36px;font-size:.85rem;color:var(--muted)}
.footer a{text-decoration:none;border-bottom:1px solid var(--line)}
.footer .fl{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}