:root {
  color-scheme: dark;
  --bg: #09100d;
  --panel: #111b16;
  --line: #2b3c33;
  --text: #edf7f0;
  --muted: #9db0a4;
  --accent: #a8ff60;
  --accent-2: #63d8ff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 85% 0%, rgba(99, 216, 255, .12), transparent 35rem),
    radial-gradient(circle at 0% 20%, rgba(168, 255, 96, .1), transparent 30rem),
    var(--bg);
  color: var(--text);
}
main { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px max(20px, calc((100% - 1080px) / 2)); border-bottom: 1px solid var(--line); background: rgba(9, 16, 13, .9); backdrop-filter: blur(18px); }
.brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 18px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
nav .language-link { color: var(--accent-2); }
.repo-link { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--text); }
.repo-link:hover { border-color: var(--accent); text-decoration: none; }
.repo-link svg { width: 16px; height: 16px; }
.nav-group { position: relative; color: var(--muted); font-size: 14px; }
.nav-group summary { display: flex; align-items: center; gap: 5px; list-style: none; cursor: pointer; user-select: none; }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::after { content: "⌄"; color: #728479; font-size: 12px; transform: translateY(-1px); }
.nav-group:hover summary, .nav-group:focus-within summary, .nav-group.active summary { color: var(--accent); }
.nav-menu { position: absolute; top: calc(100% + 12px); left: -14px; display: grid; min-width: 220px; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: rgba(9, 16, 13, .98); box-shadow: 0 18px 45px rgba(0, 0, 0, .35); }
.nav-group:not([open]) > .nav-menu { display: none; }
.nav-group:hover > .nav-menu, .nav-group:focus-within > .nav-menu { display: grid; }
.nav-menu a { padding: 9px 10px; border-radius: 6px; white-space: nowrap; }
.nav-menu a:hover, .nav-menu a[aria-current="page"] { background: var(--panel); }
.docs { max-width: 900px; padding: 72px 0; }
.docs > h1 { font-size: clamp(44px, 7vw, 78px); }
.docs h2 { margin: 72px 0 22px; padding-top: 24px; border-top: 1px solid var(--line); font-size: clamp(28px, 4vw, 42px); }
.docs h3 { margin: 36px 0 14px; font-size: 22px; }
.docs p, .docs li { color: #c4d2c8; font-size: 16px; line-height: 1.75; }
.docs li + li { margin-top: 8px; }
.docs a { color: var(--accent-2); }
.docs code { color: #d7ffe6; font: .9em ui-monospace, SFMono-Regular, Menlo, monospace; }
.docs :not(pre) > code { padding: 2px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); }
.docs blockquote { margin: 24px 0; padding: 2px 18px; border-left: 3px solid var(--accent-2); background: rgba(99, 216, 255, .06); }
.docs img { display: block; max-width: 100%; height: auto; margin: 28px auto; border-radius: 12px; }
.architecture-diagram { display: block; width: 100%; height: auto; margin: 24px 0; border: 1px solid var(--line); border-radius: 14px; background: #06100c; }
.asciinema-demo { margin: 24px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: #15191e; }
.docs table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; }
.docs th, .docs td { padding: 12px 14px; border: 1px solid var(--line); text-align: left; }
.docs th { color: var(--accent); background: var(--panel); }
.hero { min-height: 70vh; display: grid; align-content: center; padding: 80px 0 60px; }
.eyebrow { color: var(--accent); letter-spacing: .18em; font: 700 12px/1.4 ui-monospace, monospace; }
h1 { margin: 16px 0 24px; max-width: 900px; font-size: clamp(48px, 9vw, 104px); line-height: .94; letter-spacing: -.065em; }
.lede { max-width: 760px; margin: 0; color: #c4d2c8; font-size: clamp(18px, 2.4vw, 26px); line-height: 1.55; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.badges span { border: 1px solid var(--line); border-radius: 999px; padding: 8px 13px; color: var(--muted); font: 12px ui-monospace, monospace; }
section { padding: 76px 0; border-top: 1px solid var(--line); }
.section-heading { display: flex; align-items: baseline; gap: 18px; margin-bottom: 28px; }
.section-heading span { color: var(--accent); font: 13px ui-monospace, monospace; }
h2 { margin: 0; font-size: clamp(30px, 5vw, 54px); letter-spacing: -.04em; }
.notice { padding: 16px 18px; border-left: 3px solid var(--accent-2); background: rgba(99, 216, 255, .06); color: #c9dce2; }
.fields { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 24px 0; }
label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; }
input { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: #0b130f; color: var(--text); padding: 12px; font: 14px ui-monospace, monospace; }
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.command-card { margin: 18px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.command-card > div { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
button { border: 0; border-radius: 6px; background: var(--accent); color: #0a110d; padding: 6px 11px; font-weight: 750; cursor: pointer; }
pre { margin: 18px 0; padding: 18px; overflow-x: auto; white-space: pre-wrap; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: #d7ffe6; font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; }
.command-card pre { margin: 0; border: 0; border-radius: 0; }
.agent-grid, .release-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 22px 0; }
article { min-width: 0; border: 1px solid var(--line); border-radius: 10px; padding: 17px; background: rgba(17, 27, 22, .75); }
article h3 { margin: 0 0 14px; }
article code { color: var(--accent-2); overflow-wrap: anywhere; }
.release-grid { grid-template-columns: repeat(3, 1fr); }
.release-grid strong { color: var(--accent); }
.release-grid p, .muted { color: var(--muted); line-height: 1.6; }
.article-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 36px 0; }
.article-card { display: flex; flex-direction: column; padding: 0 0 20px; overflow: hidden; }
.article-card:first-child { grid-column: 1 / -1; }
.article-card img { width: 100%; aspect-ratio: 16 / 8; margin: 0 0 20px; border-radius: 0; object-fit: cover; }
.article-card h2 { margin: 0; padding: 0 20px; border: 0; font-size: clamp(24px, 3vw, 34px); }
.article-card p { padding: 0 20px; }
.article-card .article-kicker { margin: 0 0 8px; color: var(--accent); font: 700 12px/1.4 ui-monospace, monospace; letter-spacing: .12em; }
.article-card .article-link { margin: auto 20px 0; }
.breadcrumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 38px; color: var(--muted); font-size: 13px; }
.breadcrumbs a { text-decoration: none; }
footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; width: min(1080px, calc(100% - 40px)); margin: 0 auto; padding: 32px 0 56px; color: #728479; font: 12px ui-monospace, monospace; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }
.language-home main { min-height: 100vh; }
.language-choices { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.language-choices a { min-width: 150px; padding: 14px 20px; border: 1px solid var(--line); border-radius: 10px; color: var(--text); text-align: center; text-decoration: none; background: var(--panel); }

@media (max-width: 760px) {
  main { width: min(100% - 24px, 1080px); }
  .site-header { position: static; align-items: flex-start; flex-direction: column; padding: 16px 12px; }
  .site-header nav { align-items: flex-start; flex-direction: column; width: 100%; gap: 12px; }
  .site-header .repo-link { width: auto; }
  .nav-group { width: 100%; }
  .nav-group summary { width: 100%; }
  .nav-menu { position: static; min-width: 0; margin-top: 8px; padding: 4px 0 0 12px; border: 0; background: transparent; box-shadow: none; }
  .nav-menu a { padding: 7px 0; white-space: normal; }
  .nav-group:not([open]) > .nav-menu, .nav-group:hover > .nav-menu { display: none; }
  .nav-group[open] > .nav-menu { display: grid; }
  .docs { padding-top: 44px; }
  .hero { min-height: auto; padding: 72px 0; }
  .fields, .agent-grid, .release-grid, .article-grid { grid-template-columns: 1fr; }
  .article-card:first-child { grid-column: auto; }
  footer { align-items: flex-start; flex-direction: column; }
  section { padding: 56px 0; }
}

@media (prefers-reduced-motion: no-preference) {
  button { transition: transform .15s ease, filter .15s ease; }
  button:hover { transform: translateY(-1px); filter: brightness(1.08); }
}