:root {
  --bg: #08080b;
  --bg-raised: #101017;
  --bg-card: #121219;
  --border: #24242f;
  --border-soft: #1a1a22;
  --fg: #e7e7ef;
  --fg-dim: #9a9aab;
  --fg-dimmer: #6f6f80;
  --accent: #8b7cf6;
  --accent-bright: #c4b5fd;
  --accent-dim: #6d5fd8;
  --green: #4ade80;
  --amber: #fbbf24;
  --red: #f87171;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --radius: 10px;
  --max: 1180px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfbfd;
    --bg-raised: #f2f2f6;
    --bg-card: #ffffff;
    --border: #e2e2ea;
    --border-soft: #ececf2;
    --fg: #16161d;
    --fg-dim: #55556a;
    --fg-dimmer: #86869a;
    --accent: #6d5fd8;
    --accent-bright: #5943c9;
    --accent-dim: #7c6fee;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }

a { color: inherit; text-decoration: none; }
code, pre, .mono { font-family: var(--mono); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* background grid texture */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  opacity: 0.6;
}

/* nav */
header.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border-soft);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}
.brand img { width: 26px; height: 26px; }
.brand .pkg { color: var(--fg-dimmer); font-family: var(--mono); font-weight: 400; font-size: 13px; }

nav.links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--fg-dim);
}
nav.links a:hover { color: var(--fg); }
.nav-cta {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: border-color .15s, background .15s, transform .1s;
}
.btn:hover { border-color: var(--accent-dim); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0a0a0f;
  font-weight: 600;
}
.btn-primary:hover { background: var(--accent-bright); border-color: var(--accent-bright); }
.btn-ghost { color: var(--fg-dim); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* hero */
.hero {
  padding: 96px 0 64px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent-bright);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
h1.title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
  font-weight: 650;
}
h1.title .grad {
  background: linear-gradient(120deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.subtitle {
  max-width: 660px;
  margin: 0 auto 36px;
  color: var(--fg-dim);
  font-size: 1.1rem;
}
.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.btn-lg { padding: 12px 22px; font-size: 15px; }

/* code window */
.window {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  text-align: left;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.5);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-raised);
}
.window-bar .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.window-bar .file {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--fg-dimmer);
}
pre.code {
  margin: 0;
  padding: 20px 22px;
  overflow-x: auto;
  font-size: 13.2px;
  line-height: 1.65;
}
pre.code, pre.code code { color: var(--fg); }
.tok-kw { color: #ff7ab2; }
.tok-fn { color: #82aaff; }
.tok-str { color: #4ade80; }
.tok-com { color: var(--fg-dimmer); font-style: italic; }
.tok-type { color: #fbbf24; }
.tok-num { color: #f78c6c; }

.hero-code { max-width: 720px; margin: 0 auto; }

.hero-curl {
  max-width: 720px;
  margin: 18px auto 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg-dim);
  justify-content: center;
}
.hero-curl .arrow { color: var(--accent); }

/* section headers */
.section { padding: 88px 0; border-top: 1px solid var(--border-soft); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head .kicker {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.section-head p { color: var(--fg-dim); font-size: 1.02rem; }

/* feature grid */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent-dim); transform: translateY(-2px); }
.card .icon {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent-bright);
  margin-bottom: 14px;
}
.card h3 { font-size: 1rem; margin: 0 0 8px; letter-spacing: -0.01em; }
.card p { color: var(--fg-dim); font-size: 0.92rem; margin: 0; }

/* diagram */
.diagram-frame {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

/* comparison table */
.compare {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-size: 0.92rem;
}
.compare th, .compare td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
}
.compare th { color: var(--fg-dimmer); font-weight: 500; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; }
.compare td:not(:first-child), .compare th:not(:first-child) { text-align: center; }
.compare tr:last-child td { border-bottom: none; }
.compare td:first-child { color: var(--fg-dim); }
.yes { color: var(--green); }
.no { color: var(--fg-dimmer); }
.compare tr.highlight td:first-child { color: var(--fg); font-weight: 600; }
.compare-scroll { overflow-x: auto; }

/* reference brains */
.brains { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .brains { grid-template-columns: 1fr; } }
.brain-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.brain-card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--accent-bright);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 3px 9px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.brain-card h3 { margin: 0 0 8px; font-family: var(--mono); font-size: 1rem; }
.brain-card p { color: var(--fg-dim); font-size: 0.92rem; }
.brain-card ul { margin: 12px 0 0; padding-left: 18px; color: var(--fg-dim); font-size: 0.88rem; }
.brain-card li { margin-bottom: 4px; }

/* docs cta */
.docs-cta {
  text-align: center;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-raised));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 56px 24px;
}
.docs-cta h2 { margin: 0 0 12px; font-size: 1.7rem; letter-spacing: -0.02em; }
.docs-cta p { color: var(--fg-dim); margin: 0 0 28px; }
.cta-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

/* llms row */
.llms-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 12.5px;
}
.llms-row a {
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 11px;
  color: var(--fg-dim);
}
.llms-row a:hover { color: var(--fg); border-color: var(--accent-dim); }

/* footer */
footer {
  border-top: 1px solid var(--border-soft);
  padding: 36px 0;
  color: var(--fg-dimmer);
  font-size: 13px;
}
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a:hover { color: var(--fg-dim); }

@media (max-width: 700px) {
  nav.links { display: none; }
  .hero { padding: 64px 0 40px; }
  .section { padding: 56px 0; }
}