/* agents-unite — plain paper, not startup landing page */

@import url("https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,600;0,6..72,800;1,6..72,400&family=Fragment+Mono:ital@0;1&display=swap");

:root {
  --paper: #f3ecdf;
  --paper-dark: #e8dfd0;
  --ink: #1c1917;
  --ink-soft: #44403c;
  --muted: #57534e;
  --rule: #1c1917;
  --link: #1d4ed8;
  --link-visited: #6d28d9;
  --stamp: #991b1b;
  --head: "Newsreader", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --body: "Newsreader", Georgia, "Times New Roman", serif;
  --mono: "Fragment Mono", "Courier New", Courier, monospace;
  --max: 38rem;
  --wide: 52rem;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 18px; }

body {
  font-family: var(--body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
}

/* faint ruled lines like ledger paper */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 27px,
    rgba(28, 25, 23, 0.06) 27px,
    rgba(28, 25, 23, 0.06) 28px
  );
  z-index: -1;
}

a { color: var(--link); }
a:visited { color: var(--link-visited); }
a:hover { color: var(--ink); }

.wrap { max-width: var(--wide); margin: 0 auto; padding: 0 1.25rem; }

/* ---- header: looks like someone's blog masthead ---- */
.site-header {
  border-bottom: 3px double var(--rule);
  background: var(--paper);
  margin-bottom: 0;
}

.header-inner {
  display: block;
  padding: 1.25rem 1.25rem 1rem;
  max-width: var(--wide);
  margin: 0 auto;
}

.logo {
  display: block;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  margin-bottom: 0.65rem;
}
.logo:hover { text-decoration: underline; color: var(--ink); }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: lowercase;
  margin-bottom: 0.5rem;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
}
.nav-link.active {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.nav-link:hover { color: var(--ink); text-decoration: underline; }

.btn-sm {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--stamp);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.btn-sm:hover { color: var(--ink); }

/* ---- buttons: boring rectangles ---- */
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.45rem 0.75rem;
  border: 2px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  box-shadow: 3px 3px 0 var(--rule);
}
.btn:hover {
  background: var(--paper-dark);
  color: var(--ink);
  text-decoration: none;
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--rule);
}
.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--ink-soft);
  color: var(--paper);
}
.btn-secondary { background: var(--paper); }

/* ---- main ---- */
.main-content {
  padding: 1.75rem 1.25rem 3.5rem;
  max-width: var(--wide);
  margin: 0 auto;
}

/* hero: left-aligned newspaper column, not SaaS center */
.hero {
  max-width: var(--max);
  padding: 0.5rem 0 2rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--stamp);
  margin-bottom: 0.85rem;
  text-transform: lowercase;
}

.hero h1 {
  font-family: var(--head);
  font-size: clamp(1.85rem, 4.5vw, 2.45rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
  max-width: var(--max);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
}

.hero-sub {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.5;
}

/* sections */
section {
  margin: 2rem 0;
  max-width: var(--max);
}

section h2 {
  font-family: var(--head);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--rule);
}

/* three notes — stacked, not card grid */
.grid-3 {
  display: block;
  max-width: var(--max);
  margin: 1.5rem 0 2rem;
}

.card {
  background: transparent;
  border: none;
  border-left: 4px solid var(--rule);
  padding: 0.65rem 0 0.65rem 1rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: lowercase;
  color: var(--stamp);
  margin-bottom: 0.25rem;
}

.card p {
  font-size: 0.98rem;
  color: var(--ink-soft);
}

/* pipeline → plain numbered list */
.pipeline {
  display: block;
  list-style: none;
  margin: 0.75rem 0;
  padding: 0;
  border: 2px solid var(--rule);
  background: var(--paper-dark);
}

.step {
  display: block;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--rule);
  min-width: unset;
  flex: unset;
  background: transparent;
  border-radius: 0;
}

.step:last-child { border-bottom: none; }

.step span {
  display: inline;
  background: none;
  color: var(--stamp);
  width: auto;
  height: auto;
  line-height: inherit;
  border-radius: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  margin-right: 0.5rem;
}

.step strong {
  font-family: var(--head);
  font-weight: 600;
}

.step p {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 0.15rem;
  margin-left: 1.5rem;
}

.arrow { display: none; }

.series-list {
  list-style: decimal;
  margin: 0.75rem 0 0.75rem 1.25rem;
  columns: 1;
  padding-left: 0.5rem;
}

.series-list li {
  margin-bottom: 0.45rem;
  font-size: 0.95rem;
  padding-left: 0.25rem;
}

.cta-block {
  background: var(--paper-dark);
  border: 2px solid var(--rule);
  padding: 1.25rem;
  text-align: left;
  max-width: var(--max);
  box-shadow: 4px 4px 0 var(--rule);
}

.cta-block h2 {
  border: none;
  padding: 0;
  margin-bottom: 0.75rem;
}

.cta-block pre {
  margin: 0.75rem 0;
  max-width: 100%;
}

/* article index */
.article-grid {
  display: block;
  margin-top: 1rem;
}

.card-link {
  display: block;
  border-bottom: 1px dotted var(--muted);
  padding: 0.65rem 0;
  margin-bottom: 0;
}

.card-link .num {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--stamp);
}

.card-link h3 {
  font-family: var(--head);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0.15rem 0;
}

.card-link h3 a {
  color: var(--ink);
  text-decoration: none;
}
.card-link h3 a:hover { text-decoration: underline; }

.card-link p {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
}

/* prose / articles */
.prose { max-width: var(--max); }

.prose h1 {
  font-family: var(--head);
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.prose h2 {
  font-family: var(--head);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.2rem;
}

.prose h3 {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 400;
  text-transform: lowercase;
  color: var(--stamp);
  margin: 1.25rem 0 0.4rem;
}

.prose p {
  margin-bottom: 0.85rem;
  color: var(--ink-soft);
}

.prose ul, .prose ol {
  margin: 0.65rem 0 0.85rem 1.35rem;
  color: var(--ink-soft);
}

.prose li { margin-bottom: 0.3rem; }

.prose hr {
  border: none;
  border-top: 1px dashed var(--muted);
  margin: 1.5rem 0;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--paper-dark);
  padding: 0.1em 0.3em;
  border: 1px solid rgba(28, 25, 23, 0.15);
}

pre {
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.45;
  background: var(--paper-dark);
  border: 2px solid var(--rule);
  padding: 0.85rem;
  overflow-x: auto;
  margin: 1rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.88rem;
  border: 2px solid var(--rule);
}

.data-table th,
.data-table td {
  border: 1px solid var(--rule);
  padding: 0.45rem 0.6rem;
  text-align: left;
}

.data-table th {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 400;
  background: var(--paper-dark);
  color: var(--ink);
}

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.25rem 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  max-width: var(--max);
}

.meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 1.25rem;
}

/* footer */
.site-footer {
  border-top: 3px double var(--rule);
  padding: 1.5rem 1.25rem 2rem;
  font-size: 0.88rem;
  color: var(--muted);
  max-width: var(--wide);
  margin: 0 auto;
}

.site-footer p { margin-bottom: 0.35rem; }
.site-footer strong {
  font-family: var(--head);
  font-weight: 600;
  color: var(--ink);
}

@media (max-width: 600px) {
  html { font-size: 17px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
}