/* Trinute public site — single shared stylesheet, no frameworks, no JS.
   System fonts, semantic colors, light/dark via prefers-color-scheme. */

:root {
  color-scheme: light dark;
  --bg: #fafafc;
  --bg-soft: #f1f1f6;
  --card: #ffffff;
  --ink: #16161d;
  --ink-soft: #55555f;
  --line: #e3e3ea;
  --accent: #4f46e5;
  --accent-ink: #ffffff;
  --accent-soft: #eef0ff;
  --safe: #b45309;
  --letters: #15803d;
  --matrix: #1d4ed8;
  --radius: 14px;
  --maxw: 68rem;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101014;
    --bg-soft: #1a1a21;
    --card: #1c1c24;
    --ink: #f2f2f5;
    --ink-soft: #b9b9c4;
    --line: #2e2e3a;
    --accent: #818cf8;
    --accent-ink: #101014;
    --accent-soft: #23233a;
    --safe: #fbbf24;
    --letters: #4ade80;
    --matrix: #93c5fd;
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 1.0625rem;
}

.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Skip link + focus */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip:focus { left: 0; }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem 1rem;
  padding-block: 0.8rem;
  flex-wrap: wrap;
}
.wordmark {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  margin-right: auto;
}
.wordmark span { color: var(--accent); }
.site-nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  font-size: 0.95rem;
}
.site-nav a:hover { background: var(--bg-soft); color: var(--ink); }
.lang-switch {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.85rem;
}
.lang-switch a, .lang-switch span {
  padding: 0.3rem 0.7rem;
  text-decoration: none;
  color: var(--ink-soft);
}
.lang-switch [aria-current="page"] {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

/* Hero */
.hero {
  text-align: center;
  padding: clamp(2.5rem, 7vw, 5rem) 1.25rem clamp(2rem, 5vw, 3.5rem);
}
.hero .kicker {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
}
.hero .tagline {
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  color: var(--ink-soft);
  margin: 0 auto 1rem;
  max-width: 36rem;
}
.hero p.lead { max-width: 38rem; margin: 0 auto 1.6rem; }
.cta-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid transparent;
  min-height: 44px;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--bg-soft); }
.store-note { font-size: 0.9rem; color: var(--ink-soft); margin-top: 0.9rem; }

/* Sections + cards */
section.block { padding-block: clamp(1.8rem, 4vw, 3rem); }
section.block h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}
section.block > .wrap > p.sub { color: var(--ink-soft); margin-top: 0; max-width: 44rem; }
.grid-3 {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin-top: 1.2rem;
}
@media (min-width: 46rem) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.grid-2 {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  margin-top: 1.2rem;
}
@media (min-width: 46rem) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.card h3 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.card p { margin: 0.35rem 0 0; color: var(--ink-soft); font-size: 0.98rem; }
.card .n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 0.6rem;
}
.card.safe h3 { color: var(--safe); }
.card.letters h3 { color: var(--letters); }
.card.matrix h3 { color: var(--matrix); }

/* Illustrative tiles (abstract, not screenshots) */
.tiles {
  display: flex;
  gap: 0.4rem;
  margin: 0.7rem 0 0.2rem;
  font-weight: 800;
}
.tiles span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.4rem;
  height: 2.4rem;
  border-radius: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}
.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 2rem);
  gap: 0.3rem;
  margin-top: 0.7rem;
}
.mini-grid span {
  width: 2rem;
  height: 2rem;
  border-radius: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.mini-grid span.on { background: var(--matrix); border-color: var(--matrix); }

/* Steps */
.steps { list-style: none; margin: 1.2rem 0 0; padding: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: flex;
  gap: 0.9rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--line);
}
.steps li::before {
  content: counter(step);
  flex: none;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Legal prose */
.prose { max-width: 46rem; }
.prose h2 { margin-top: 2rem; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 1rem 0;
}
.prose th, .prose td {
  text-align: left;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  vertical-align: top;
}
.prose th { background: var(--bg-soft); }
.updated { color: var(--ink-soft); font-size: 0.92rem; }
.placeholder {
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
}

/* FAQ */
details {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.7rem;
  background: var(--card);
}
summary { font-weight: 700; cursor: pointer; }
summary::marker { color: var(--accent); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding-block: 1.6rem 2.2rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.site-footer .wrap {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}
.site-footer nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.site-footer a { color: var(--ink-soft); }
.site-footer .copy { margin-left: auto; }