/* Layout: dark-first single look. 1200px column, sticky solid header, long-scroll home with pinned product scenes; plain 68ch prose for legal pages. */
:root {
  --night: #0c0e12;      /* page ground, blue-black */
  --deck: #14171d;       /* raised surfaces */
  --rule: #262a33;       /* hairlines */
  --chalk: #f3f1ea;      /* primary text */
  --fog: #a1a6b0;        /* secondary text (7.6:1 on night) */
  --signal: #ffc21a;     /* brand yellow */
  --coral: #ff6a55;      /* product palette */
  --teal: #1fc7a8;
  --cobalt: #5b7bff;

  --font-display: "Archivo", "Arial Narrow", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, "Courier New", monospace;

  --s1: 4px; --s2: 8px; --s3: 16px; --s4: 24px; --s5: 32px; --s6: 48px; --s7: 96px; --s8: 160px;
  --max: 1200px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--night);
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--chalk); text-underline-offset: 4px; text-decoration-color: var(--signal); }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
img, svg, canvas { max-width: 100%; }
[hidden] { display: none !important; }
::selection { background: var(--signal); color: var(--night); }

.wrap { max-width: var(--max); margin-inline: auto; padding-inline: max(16px, 4vw); }

/* Header */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--night); border-bottom: 1px solid transparent; transition: border-color .3s var(--ease); }
.site-head.scrolled { border-bottom-color: var(--rule); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); flex-wrap: wrap; padding-block: var(--s3); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--chalk); text-decoration: none; font-family: var(--font-display); font-weight: 800; font-variation-settings: "wdth" 125; letter-spacing: 0.06em; text-transform: uppercase; font-size: 14px; }
.brand-mark { width: 22px; height: 22px; flex: none; }
.nav { display: flex; gap: var(--s4); flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--fog); text-decoration: none; transition: color .2s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--chalk); }

/* Shared type */
.label { margin: 0 0 var(--s3); font-family: var(--font-mono); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--signal); }
h1, h2, h3 { text-wrap: balance; }

/* Prose pages */
.page-head { padding-block: var(--s7) var(--s5); border-bottom: 1px solid var(--rule); }
.page-head h1 { margin: 0; font-family: var(--font-display); font-weight: 900; font-variation-settings: "wdth" 125; text-transform: uppercase; letter-spacing: -0.01em; font-size: clamp(40px, 7vw, 88px); line-height: 0.92; }
.page-head p { margin: var(--s4) 0 0; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fog); }
.prose { max-width: 68ch; padding-block: var(--s6) var(--s7); color: #d7d6cf; }
.prose h2 { color: var(--chalk); font-family: var(--font-display); font-weight: 800; font-variation-settings: "wdth" 112; font-size: 24px; line-height: 1.2; margin: var(--s6) 0 var(--s3); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { color: var(--chalk); font-size: 18px; margin: var(--s4) 0 var(--s2); }
.prose p, .prose ul { margin: 0 0 var(--s3); }
.prose li + li { margin-top: var(--s2); }
.prose li::marker { color: var(--signal); }

.contact { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s3); padding: var(--s4); background: var(--deck); border: 1px solid var(--rule); border-radius: 14px; }
.contact code { font-family: var(--font-mono); font-size: 18px; color: var(--chalk); word-break: break-all; }
.btn { font: inherit; font-size: 15px; font-weight: 600; cursor: pointer; background: var(--signal); color: var(--night); border: 0; border-radius: 999px; padding: 10px 20px; transition: transform .2s var(--ease), background .2s; }
.btn:hover { transform: translateY(-1px); background: #ffd24d; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--chalk); box-shadow: inset 0 0 0 1px var(--rule); }
.btn.ghost:hover { box-shadow: inset 0 0 0 1px var(--fog); background: transparent; }

.faq details { border-top: 1px solid var(--rule); padding-block: var(--s4); }
.faq details:last-child { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 18px; color: var(--chalk); list-style: none; display: flex; justify-content: space-between; gap: var(--s3); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--signal); transition: transform .25s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: var(--s3) 0 0; max-width: 62ch; }

/* Footer */
.site-foot { border-top: 1px solid var(--rule); margin-top: 0; }
.foot-mark { font-family: var(--font-display); font-weight: 900; font-variation-settings: "wdth" 125; text-transform: uppercase; line-height: 0.8; letter-spacing: -0.02em; font-size: clamp(64px, 17vw, 236px); color: var(--deck); margin: 0; padding-top: var(--s6); user-select: none; overflow: hidden; white-space: nowrap; }
.foot-row { display: flex; justify-content: space-between; gap: var(--s3); flex-wrap: wrap; padding-block: var(--s4) var(--s5); font-size: 14px; color: var(--fog); }
.foot-row nav { display: flex; gap: var(--s4); flex-wrap: wrap; }
.foot-row a { color: var(--fog); text-decoration: none; }
.foot-row a:hover { color: var(--chalk); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}