/*
 * Design tokens, the reset, the page's background field, and the few
 * primitives every section uses: the shell, section rhythm, headings and
 * buttons. Nothing here belongs to one section.
 */

/*
 * Six small files, no framework and no build step. The site claims the product
 * is small enough to audit; shipping a megabyte of CSS to say so would undercut
 * it.
 *
 * The palette is the panel's, so the product and the page selling it do not
 * look like two different products. Amber rather than the green every other
 * tool in this space uses.
 */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg: #07090c;
  --surface: #0d1014;
  --surface-2: #13171d;
  --line: #1c2028;
  --line-bright: #2a303a;
  --text: #e9ebf0;
  --text-dim: #949cab;
  --text-faint: #646c7c;
  --amber: #fbbf24;
  --amber-dim: #8a6a1a;
  --danger: #f87171;
  --safe: #4ade80;

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --shell: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  position: relative;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

/* A faint sonar grid behind everything, and one amber source of light at the
   top. Fixed, so scrolling moves the page across the light rather than the
   light travelling with it. */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(900px 560px at 72% -8%, rgba(251,191,36,.10), transparent 68%),
    radial-gradient(700px 500px at 8% 34%, rgba(251,191,36,.035), transparent 70%);
}
/* --- Background field ---------------------------------------------------
   Out-of-focus bubbles from the same world as the hero, scrolling with the
   document so each section gets its own light. Deliberately close to
   invisible: it should register as depth, not as decoration. */
.field {
  position: absolute; inset: 0; z-index: 0;
  overflow: hidden; pointer-events: none;
}
.field i {
  position: absolute;
  top: var(--t); left: var(--l);
  width: var(--d); height: var(--d);
  margin: calc(var(--d) / -2) 0 0 calc(var(--d) / -2);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 34%,
    rgba(168,188,214,.075), rgba(168,188,214,.022) 46%, rgba(168,188,214,.006) 72%, transparent 88%);
  filter: blur(26px);
  animation: float calc(34s + var(--i) * 3s) ease-in-out infinite alternate;
  animation-delay: calc(var(--i) * -2.4s);
}
/* A few carry the accent, so the amber in the hero does not stop at the fold. */
.field i.a {
  background: radial-gradient(circle at 38% 34%,
    rgba(251,191,36,.085), rgba(251,191,36,.025) 44%, rgba(251,191,36,.007) 70%, transparent 88%);
}
@keyframes float {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(2.5%, -3.5%, 0) scale(1.07); }
}
@media (prefers-reduced-motion: reduce) { .field i { animation: none; } }

body::after {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 12%, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 12%, transparent 72%);
}
header, main, footer, .ticker { position: relative; z-index: 1; }

a { color: inherit; }
code { font-family: var(--mono); font-size: .92em; }

.shell { max-width: var(--shell); margin: 0 auto; padding: 0 28px; }

/* Small uppercase mono labels do a lot of work here: they mark every section
   and keep the page feeling like an instrument rather than a brochure. */
.label {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.label .on { color: var(--amber); }

.cta-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 22px; border-radius: 6px;
  font-size: 15px; font-weight: 500; text-decoration: none;
  border: 1px solid transparent;
  transition: background .2s, border-color .2s, color .2s;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn-lg { padding: 15px 26px; font-size: 16px; }
.btn-lg svg { width: 19px; height: 19px; }
.btn-primary { background: var(--amber); color: #0a0b0e; font-weight: 600; }
.btn-primary:hover { background: #fdd34f; }
.btn-ghost {
  color: var(--text); border-color: rgba(255,255,255,.24);
  background: rgba(255,255,255,.05); backdrop-filter: blur(6px);
}
.btn-ghost:hover { border-color: rgba(255,255,255,.5); }

/* --- Sections ----------------------------------------------------------- */

section { padding: 78px 0; border-top: 1px solid var(--line); position: relative; }
/* No per-section tint: it stepped visibly across the background bubbles, and
   the field behind the page already gives the scroll its rhythm. */

/* The label gets a short amber rule — the same tick marks as the panel. */
.label { position: relative; }
section > .shell > .label::before,
section > .shell.split > div > .label::before {
  content: ""; display: inline-block; vertical-align: middle;
  width: 18px; height: 1px; background: var(--amber);
  margin-right: 11px; opacity: .8;
}

h2 {
  font-size: clamp(23px, 2.5vw, 31px);
  letter-spacing: -.028em; line-height: 1.12;
  font-weight: 600; margin: 15px 0 16px;
  max-width: 21ch;
}
.shell > h2 { max-width: 24ch; }
h2 em { font-style: normal; color: var(--amber); }
.section-lede { color: var(--text-dim); max-width: 58ch; margin-bottom: 44px; }

/* Full-width sections centre their header block; only the two-column ones
   keep a left-hand column, so nothing is left hanging against a void. */
section > .shell:not(.split) {
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
section > .shell:not(.split) > h2 { max-width: 20ch; }
section > .shell:not(.split) > .section-lede { margin-bottom: 44px; }
/* The content blocks stay full width and left-aligned inside themselves. */
section > .shell:not(.split) > .spec,
section > .shell:not(.split) > .grid-table,
section > .shell:not(.split) > .faq,
section > .shell:not(.split) > .flow,
section > .shell:not(.split) > .chain-grid,
section > .shell:not(.split) > .readout,
section > .shell:not(.split) > .install,
section > .shell:not(.split) > .aside,
section > .shell:not(.split) > .wide-shot,
section > .shell:not(.split) > .vs-note { width: 100%; text-align: left; }

.split { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.04fr); gap: 52px; align-items: center; }
.split.flip > :first-child { order: 2; }
@media (max-width: 980px) {
  .split { grid-template-columns: 1fr; gap: 38px; }
  .split.flip > :first-child { order: 0; }
}
.split p { color: var(--text-dim); max-width: 56ch; font-size: 15.4px; }
.split p + p { margin-top: 14px; }