/* about-us.md — B2B sister of username.md.
 * Mono-first, calmer than username.md, business-trust accent (indigo).
 * Sibling stylesheets: username.md (pink), finger.md (mono-only), about-me.md (TBD).
 */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #131517;
  --muted: rgba(19, 21, 23, 0.62);
  --rule: rgba(19, 21, 23, 0.10);
  --chip: rgba(19, 21, 23, 0.04);
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d10;
    --fg: #e8eaee;
    --muted: rgba(232, 234, 238, 0.62);
    --rule: rgba(232, 234, 238, 0.12);
    --chip: rgba(232, 234, 238, 0.06);
    --accent: #6488ff;
  }
}

* { box-sizing: border-box; }

html, body { background: var(--bg); color: var(--fg); }

body {
  font: 16px/1.55 var(--sans);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }

.top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.9rem;
}
.top a { color: inherit; text-decoration: none; }
.top a:hover { color: var(--accent); }
.brand { font-weight: 700; letter-spacing: -0.01em; }
.nav { display: flex; gap: 1.25rem; }

.hero { padding: 5rem 0 3rem; border-bottom: 1px solid var(--rule); }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}
.hero h1 {
  font-family: var(--mono);
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  font-weight: 700;
}
.hero h1 .accent { color: var(--accent); }
.hero p.lede {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  max-width: 60ch;
  color: var(--muted);
  margin: 0 0 2rem;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.95rem;
  padding: 0.85rem 1.25rem;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid var(--fg);
  color: var(--fg);
  background: transparent;
  transition: transform 0.05s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

section { padding: 3.5rem 0; border-bottom: 1px solid var(--rule); }
section:last-of-type { border-bottom: 0; }

h2 {
  font-family: var(--mono);
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin: 0 0 1.5rem;
}
h2 .accent { color: var(--accent); }

h3 {
  font-family: var(--mono);
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
}

p { margin: 0 0 1rem; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}
@media (max-width: 760px) { .grid-3 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 1.25rem;
  background: var(--chip);
}
.card .tag {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}
.card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.compare th, .compare td {
  text-align: left;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.compare th {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.compare td.legacy { color: var(--muted); text-decoration: line-through; }
.compare td.now { color: var(--fg); }
.compare td.now::before { content: "→ "; color: var(--accent); font-family: var(--mono); }

.receipt {
  font-family: var(--mono);
  font-size: 0.88rem;
  background: var(--chip);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 4px;
  white-space: pre-wrap;
  overflow-x: auto;
  color: var(--fg);
}
.receipt .k { color: var(--accent); }

ul.checks {
  list-style: none;
  padding: 0;
  margin: 0;
}
ul.checks li {
  padding: 0.5rem 0 0.5rem 1.75rem;
  position: relative;
  border-bottom: 1px solid var(--rule);
}
ul.checks li:last-child { border-bottom: 0; }
ul.checks li::before {
  content: "▸";
  color: var(--accent);
  position: absolute;
  left: 0.25rem;
  top: 0.5rem;
  font-weight: 700;
}

footer {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  padding: 2.5rem 1.5rem 3rem;
  max-width: 1280px;
  margin: 0 auto;
}
footer a { color: inherit; }
footer a:hover { color: var(--accent); }
.foot-row { display: flex; flex-wrap: wrap; gap: 1.25rem; justify-content: space-between; }

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

a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- numbered steps (how-it-works, design-partners timeline) --- */
ol.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
}
ol.steps li {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 1.25rem;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--chip);
}
ol.steps .step-k {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 6px;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}
ol.steps h3 { margin: 0 0 0.35rem; }
ol.steps p { color: var(--muted); margin: 0; font-size: 0.95rem; }

/* --- landing v2: proof-first hero (index only, additive) --- */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }

.receipt-card { margin: 0; }
.receipt-cap {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.6rem;
}
.receipt-cap .ok { color: #15803d; font-weight: 700; }
@media (prefers-color-scheme: dark) { .receipt-cap .ok { color: #4ade80; } }

.verify-strip {
  padding: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
}
.verify-lede {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}
.verify-cmd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.88rem;
}
.verify-cmd code {
  background: var(--chip);
  border: 1px solid var(--rule);
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
}
.verify-cmd code::before { content: "$ "; color: var(--accent); }

/* the receipt block already exists; make code inside it inherit the mono */
.receipt code { font-family: inherit; color: inherit; }
code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: var(--chip);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
}