/* avatarsd.com — one stylesheet, no frameworks, no webfonts, no external requests.
   Single committed theme: white on true black, after the company mark (an e+e- annihilation
   Feynman diagram). Restrained, physics-paper typography — serif headings, sans body, monospace
   for part designations. No prefers-color-scheme duality: the brand is black. */

:root {
  color-scheme: dark;
  --bg: #000000;
  --ink: #e8e8e6;         /* body text */
  --bright: #ffffff;      /* emphasis, headings, the mark */
  --muted: #9a9a96;       /* secondary text, labels */
  --rule: #2a2a28;        /* hairlines */
  --link: #a9bccd;        /* one cool grey-blue, links only */
  --serif: Georgia, "Times New Roman", "Nimbus Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --measure: 66ch;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.65 var(--sans);
  font-feature-settings: "kern", "liga";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

code {
  font: 500 .88em/1 var(--mono);
  color: var(--bright);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

/* ── header: the mark + the wordmark, one lockup ─────────────────────────── */

.bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.5rem;
  align-items: center;
  justify-content: space-between;
  max-width: 74rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 1.6rem;
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: var(--bright);
}

.wordmark svg {
  width: auto;
  height: 72px;
  display: block;
  flex: none;
}

.wordmark span {
  font: 400 1.5rem/1 var(--serif);
  letter-spacing: .01em;
}

.bar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: .9rem;
  color: var(--muted);
}

.bar nav a {
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}

.bar nav a:hover { color: var(--bright); border-bottom-color: var(--rule); }

/* language switcher — plain text, set apart from the section links by a hairline */
.bar nav a.lang {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .12em;
  padding-left: 1.5rem;
  margin-left: -.4rem;
  border-left: 1px solid var(--rule);
  border-bottom: 0;
  padding-bottom: 0;
}

.bar nav a.lang:hover { color: var(--bright); }

@media (max-width: 34rem) {
  .wordmark svg { height: 52px; }
}

/* ── layout ──────────────────────────────────────────────────────────────── */

main {
  max-width: 74rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { padding: 4.4rem 0; border-bottom: 1px solid var(--rule); }

h1, h2 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.005em;
  color: var(--bright);
}

p { max-width: var(--measure); }

/* ── lede ────────────────────────────────────────────────────────────────── */

.kicker {
  margin: 0 0 1.5rem;
  font: 400 .76rem/1.4 var(--mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.lede h1 {
  margin: 0 0 1.6rem;
  font-size: clamp(2rem, 4.4vw, 3rem);
  line-height: 1.18;
  max-width: 22ch;
}

.lede .sub {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0;
}

.lede .sub strong { color: var(--ink); font-weight: 400; font-family: var(--serif); font-size: 1.06em; }

/* ── product stories ─────────────────────────────────────────────────────── */

.story { display: grid; gap: 1.4rem 3.5rem; grid-template-columns: 1fr; }

.tag {
  margin: 0 0 .8rem;
  font: 400 .76rem/1.4 var(--mono);
  letter-spacing: .14em;
  color: var(--muted);
  text-transform: uppercase;
}

.story h2 {
  margin: 0 0 .8rem;
  font-size: clamp(1.4rem, 2.4vw, 1.8rem);
  line-height: 1.28;
  max-width: 22ch;
}

.status {
  margin: 0;
  font: 400 .82rem/1.5 var(--sans);
  color: var(--muted);
  padding-left: .9rem;
  border-left: 1px solid var(--rule);
  max-width: 30ch;
}

.story-body p { margin: 0 0 1.2rem; }
.story-body p:last-child { margin-bottom: 0; }
.story-body strong { color: var(--bright); font-weight: 600; }
.story-body a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.story-body a:hover { color: var(--bright); }

@media (min-width: 56rem) {
  .story { grid-template-columns: minmax(0, 19rem) minmax(0, 1fr); }
  .story-head { position: sticky; top: 2rem; align-self: start; }
}

/* ── company ─────────────────────────────────────────────────────────────── */

.company h2, .contact h2 {
  margin: 0 0 2rem;
  font: 400 .78rem/1.4 var(--mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.company dl {
  margin: 0;
  display: grid;
  gap: 1.6rem 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
}

.company dt {
  font: 400 .74rem/1.4 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .5rem;
}

.company dd { margin: 0; color: var(--ink); max-width: 34ch; }

/* ── contact ─────────────────────────────────────────────────────────────── */

.contact p { color: var(--muted); margin: 0 0 1.6rem; }

.mail a {
  display: inline-block;
  font-family: var(--serif);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  color: var(--bright);
  text-decoration: none;
  padding: .5rem 1.1rem;
  border: 1px solid var(--rule);
}

.mail a:hover { border-color: var(--muted); }

/* ── footer ──────────────────────────────────────────────────────────────── */

footer {
  max-width: 74rem;
  margin: 0 auto;
  padding: 2.4rem 1.5rem 4.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 2rem;
  justify-content: space-between;
  font: 400 .85rem/1.6 var(--mono);
  color: var(--muted);
  letter-spacing: .02em;
}

footer p { margin: 0; }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}