:root {
  --bg: #0b0d12;
  --bg-alt: #11141b;
  --fg: #e7ecf3;
  --fg-muted: #9aa4b2;
  --accent: #5eead4;
  --accent-hi: #2dd4bf;
  --line: #1f2530;
  --max: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hi); text-decoration: underline; }

code, pre, .code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

/* ---- Header / nav ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(11, 13, 18, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--fg);
  font-size: 1.05rem;
}
.brand:hover { text-decoration: none; color: var(--accent); }
.nav-links {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  padding: 0;
  margin: 0;
}
.nav-links a {
  color: var(--fg-muted);
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--fg); text-decoration: none; }

/* ---- Hero ---- */
.hero {
  padding: 5rem 1.25rem 3.5rem;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  max-width: var(--max);
  margin: 0 auto;
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.25em;
  line-height: 1.05;
}
.tagline {
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--accent);
  margin: 0 0 1.5rem;
  font-weight: 600;
}
.lede {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 62ch;
  margin: 0 0 2rem;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.cta {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.08s ease, background-color 0.15s ease;
}
.cta:hover { text-decoration: none; transform: translateY(-1px); }
.cta-primary {
  background: var(--accent);
  color: #05201c;
}
.cta-primary:hover { background: var(--accent-hi); color: #05201c; }
.cta-secondary {
  border-color: var(--line);
  color: var(--fg);
}
.cta-secondary:hover { border-color: var(--fg-muted); color: var(--fg); }

.muted { color: var(--fg-muted); }
.small { font-size: 0.9rem; }

/* ---- Sections ---- */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.25rem;
  border-bottom: 1px solid var(--line);
}
.section:last-of-type { border-bottom: none; }
.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

/* ---- Agents grid ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.card {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem;
}
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--accent);
}
.card p { margin: 0; color: var(--fg-muted); }
.card-muted {
  background: transparent;
  border-style: dashed;
}
.card-muted h3 { color: var(--fg); }

/* ---- Architecture rows ---- */
.arch {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
}
.arch-row {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.25rem 1.4rem;
}
.arch-row h3 {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
}
.arch-target {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92rem;
}
.arch-row p:last-child {
  margin: 0;
  color: var(--fg-muted);
}

/* ---- Table ---- */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.25rem;
  font-size: 0.97rem;
}
.table th, .table td {
  text-align: left;
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.table th {
  color: var(--fg-muted);
  font-weight: 600;
  background: var(--bg-alt);
}

/* ---- Code block ---- */
.code {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--fg);
  margin: 1.25rem 0 1rem;
}
.code code { background: none; padding: 0; }

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.25rem;
  color: var(--fg-muted);
  font-size: 0.88rem;
}
.site-footer p {
  max-width: var(--max);
  margin: 0 auto;
}

/* ---- Small screens ---- */
@media (max-width: 640px) {
  .nav-links { gap: 0.9rem; font-size: 0.9rem; }
  .hero { padding: 3rem 1.25rem 2.5rem; }
  .section { padding: 3rem 1.25rem; }
}