/* GangliaX Labs. Layout: a left-aligned column on paper, with the ganglion (a cluster of nodes passing
   signals) as the one bold moment in the hero; everything else stays quiet. */
:root {
  --paper: #F3F5F8;
  --surface: #FFFFFF;
  --ink: #121A2E;
  --muted: #4A5468;
  --line: #D6DCE6;
  --link: #8A4F00;
  --signal: #E39B2D;
  --node: #121A2E;
  --draft-bg: #FFF4DE;
  --draft-ink: #6B3D00;
  --mark-bg: #FCE7B8;

  --budget-deep: #12382F;
  --budget-mint: #BFD9CF;
  --budget-gold: #E2B46B;

  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Public Sans", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Menlo, monospace;
  --font-budget: "Fraunces", Georgia, serif;

  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: 1.1875rem;
  --step-2: 1.5rem;
  --step-3: clamp(1.75rem, 1.3rem + 2vw, 2.5rem);
  --step-4: clamp(2.4rem, 1.4rem + 4.6vw, 4.6rem);

  --measure: 64ch;
  --wide: 72rem;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0D1322; --surface: #151D30; --ink: #E9EDF5; --muted: #A3ADC2; --line: #263149;
    --link: #F2B04A; --signal: #F2B04A; --node: #C9D2E3;
    --draft-bg: #2E2312; --draft-ink: #F6CF8E; --mark-bg: #4A3510;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0D1322; --surface: #151D30; --ink: #E9EDF5; --muted: #A3ADC2; --line: #263149;
  --link: #F2B04A; --signal: #F2B04A; --node: #C9D2E3;
  --draft-bg: #2E2312; --draft-ink: #F6CF8E; --mark-bg: #4A3510;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--font-body);
}
img, canvas { max-width: 100%; }
a { color: var(--link); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--font-display); font-stretch: 112%; line-height: 1.08; text-wrap: balance; margin: 0; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap {
  max-width: var(--wide);
  margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
@media (min-width: 720px) { .wrap { padding-left: max(32px, env(safe-area-inset-left, 0px)); padding-right: max(32px, env(safe-area-inset-right, 0px)); } }

.eyebrow {
  font: 500 var(--step--1)/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Header and footer */
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 1.05rem/1 var(--font-display); font-stretch: 118%; letter-spacing: 0.01em; }
.brand svg { width: 26px; height: 26px; flex: none; }
.brand .x { color: var(--link); }
.nav { display: flex; gap: 6px 22px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }

.site-footer { border-top: 1px solid var(--line); margin-top: 96px; }
.site-footer .wrap { display: grid; gap: 18px; padding-block: 32px 40px; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-footer .links a { color: var(--ink); text-decoration: none; }
.site-footer .links a:hover { text-decoration: underline; }
.site-footer small { color: var(--muted); font-size: var(--step--1); max-width: var(--measure); }

/* Home hero */
.hero .wrap { display: grid; gap: 40px; padding-block: 40px 72px; align-items: center; }
@media (min-width: 900px) { .hero .wrap { grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.9fr); padding-block: 64px 96px; } }
.hero-copy { display: grid; gap: 22px; min-width: 0; }
.hero h1 { font-size: var(--step-4); font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--link); }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 46ch; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 6px; }
.button {
  display: inline-flex; align-items: center; gap: 8px; min-height: 48px; padding: 0 22px; border-radius: 999px;
  font-weight: 600; text-decoration: none; border: 1.5px solid var(--ink);
}
.button.primary { background: var(--ink); color: var(--paper); }
.button.quiet { color: var(--ink); }
.button:hover { text-decoration: none; transform: translateY(-1px); }
.ganglion { width: 100%; aspect-ratio: 1 / 0.92; max-width: 100%; display: block; }

/* Sections */
.section .wrap { display: grid; gap: 28px; padding-block: 56px; }
.section + .section .wrap { border-top: 1px solid var(--line); }
.section h2 { font-size: var(--step-3); font-weight: 750; }
.section-head { display: grid; gap: 12px; max-width: var(--measure); }
.section-head p { color: var(--muted); font-size: var(--step-1); }

/* Budget feature */
.product { display: grid; gap: 32px; align-items: start; }
@media (min-width: 860px) { .product { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr); gap: 56px; } }
.budget-card {
  background: var(--budget-deep); color: #FFFFFF; border-radius: 22px; padding: 26px 24px 22px;
  display: grid; gap: 6px; max-width: 26rem;
}
.budget-card .label { font: 700 0.8rem/1.3 var(--font-body); color: var(--budget-mint); }
.budget-card .amount { font: 600 2.6rem/1.1 var(--font-budget); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.budget-card .sub { color: var(--budget-mint); font-size: 0.9rem; }
.budget-card svg { margin-top: 12px; width: 100%; height: 56px; }
.budget-card .caption { font: 600 0.72rem/1.3 var(--font-body); color: var(--budget-gold); }
.feature-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.feature-list li { display: grid; gap: 4px; padding-left: 20px; position: relative; max-width: var(--measure); }
.feature-list li::before { content: ""; position: absolute; left: 0; top: 0.62em; width: 8px; height: 8px; border-radius: 50%; background: var(--signal); }
.feature-list strong { font-weight: 650; }
.feature-list span { color: var(--muted); }
.status-line { font: 500 var(--step--1)/1.5 var(--font-mono); color: var(--muted); }

.app-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.app-head h3 { font-size: var(--step-2); font-weight: 750; font-stretch: 112%; }
.app-pitch { color: var(--muted); font-size: var(--step-1); max-width: var(--measure); margin-top: -12px; }
.status-pill {
  display: inline-flex; align-items: center; gap: 7px; padding: 4px 12px 4px 10px; border-radius: 999px;
  border: 1.5px solid var(--line); background: var(--surface); color: var(--ink);
  font: 600 var(--step--1)/1.3 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap;
}
.status-pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--signal); }
.next-app {
  border: 1.5px dashed var(--line); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 6px;
  max-width: 44rem; color: var(--muted);
}

/* Principles */
.principles { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
@media (min-width: 720px) { .principles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.principle { background: var(--surface); padding: 26px 24px; display: grid; gap: 8px; align-content: start; min-width: 0; }
.principle h3 { font-size: var(--step-1); font-weight: 700; font-stretch: 108%; }
.principle p { color: var(--muted); }

/* Company facts */
.facts { display: grid; gap: 0; margin: 0; max-width: 44rem; border-top: 1px solid var(--line); }
.facts div { display: grid; gap: 2px 24px; padding: 14px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 640px) { .facts div { grid-template-columns: 11rem minmax(0, 1fr); } }
.facts dt { font: 500 var(--step--1)/1.6 var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }

/* Document pages (privacy, terms, support, budget) */
.doc .wrap { display: grid; gap: 28px; padding-block: 32px 24px; }
.doc-head { display: grid; gap: 14px; max-width: var(--measure); }
.doc-head h1 { font-size: var(--step-3); font-weight: 800; }
.doc-head .lede { max-width: var(--measure); }
.draft {
  background: var(--draft-bg); color: var(--draft-ink); border-radius: 12px; padding: 14px 18px;
  max-width: var(--measure); font-size: 0.95rem;
}
.draft strong { font-weight: 700; }
.prose { max-width: var(--measure); display: grid; gap: 14px; }
.prose h2 { font-size: var(--step-2); font-weight: 750; margin-top: 22px; font-stretch: 108%; }
.prose h3 { font-size: var(--step-1); font-weight: 700; margin-top: 10px; font-stretch: 104%; }
.prose ul, .prose ol { margin: 0; padding-left: 1.25rem; display: grid; gap: 8px; }
.prose li::marker { color: var(--muted); }
.prose code { font: 0.9em/1 var(--font-mono); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 2px 5px; overflow-wrap: anywhere; }
.prose blockquote { margin: 0; border-left: 3px solid var(--line); padding-left: 16px; color: var(--muted); }
.prose mark { background: var(--mark-bg); color: inherit; border-radius: 4px; padding: 0 4px; }
.prose strong { font-weight: 650; }
.toc { font-size: 0.95rem; }
.toc ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }

.help-grid { display: grid; gap: 16px; max-width: 60rem; }
@media (min-width: 760px) { .help-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.help { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 8px; align-content: start; min-width: 0; }
.help h2 { font-size: var(--step-1); font-weight: 700; font-stretch: 106%; }
.help p, .help li { color: var(--muted); }
.help ol { margin: 0; padding-left: 1.2rem; display: grid; gap: 4px; }
.path { font: 500 0.9em/1.5 var(--font-mono); color: var(--ink); }
.contact { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.contact .addr { font: 600 var(--step-1)/1.3 var(--font-mono); overflow-wrap: anywhere; }

@media (prefers-reduced-motion: reduce) { .button:hover { transform: none; } }