@font-face {
    font-family: "Space Grotesk";
    src: url("SpaceGrotesk.woff2") format("woff2");
    font-weight: 300 700; font-style: normal; font-display: swap;
  }
  :root {
    --bg: #06121a; --bg2: #0a1d27; --panel: #0e2531; --panel2: #112c39;
    --line: rgba(255,255,255,0.09); --line2: rgba(255,255,255,0.06);
    --text: #eaf3f6; --dim: #8ba1ac; --faint: #5d727c;
    --coral: #ec6a40; --blue: #2f8ed4; --teal: #19c39a;
    --grad: linear-gradient(125deg, #ec6a40 0%, #b65a8f 48%, #2f8ed4 100%);
    --mono: ui-monospace, "SF Mono", Menlo, monospace;
    --r: 16px; --r-sm: 10px; --maxw: 1100px;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; scroll-padding-top: 88px; }
  body {
    font-family: "Space Grotesk", -apple-system, system-ui, sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.6;
    -webkit-font-smoothing: antialiased; overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  code, .mono { font-family: var(--mono); font-size: 0.88em; }
  ::selection { background: rgba(236,106,64,0.35); }

  /* ambient gradient glow */
  body::before {
    content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background:
      radial-gradient(60vw 60vw at 12% -8%, rgba(236,106,64,0.13), transparent 60%),
      radial-gradient(55vw 55vw at 92% 4%, rgba(47,142,212,0.13), transparent 60%),
      radial-gradient(50vw 50vw at 60% 110%, rgba(25,195,154,0.08), transparent 60%);
  }

  /* ---- nav ---- */
  nav {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: 22px;
    padding: 14px clamp(18px, 5vw, 48px);
    background: rgba(6,18,26,0.72); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line2);
  }
  nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; letter-spacing: -0.01em; }
  nav .brand svg { height: 22px; width: auto; display: block; }
  nav .links { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
  nav .links a {
    font-size: 13px; color: var(--dim); padding: 7px 13px; border-radius: 999px;
    transition: color .2s, background .2s; white-space: nowrap;
  }
  nav .links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
  nav .links a.active { color: #fff; background: rgba(236,106,64,0.16); }
  @media (max-width: 760px) { nav .links { display: none; } }

  main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 5vw, 48px); }
  section { padding: 64px 0; scroll-margin-top: 84px; }
  section + section { border-top: 1px solid var(--line2); }

  .eyebrow {
    font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--coral); margin-bottom: 14px;
  }
  h1 { font-size: clamp(40px, 8vw, 76px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 700; }
  h2 { font-size: clamp(26px, 4vw, 38px); letter-spacing: -0.02em; font-weight: 700; margin-bottom: 8px; }
  h3 { font-size: 18px; letter-spacing: -0.01em; font-weight: 600; }
  p.lead { color: var(--dim); font-size: clamp(16px, 2.2vw, 19px); max-width: 64ch; }
  .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

  /* ---- hero ---- */
  .hero { padding: clamp(60px, 12vh, 130px) 0 70px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
  @media (max-width: 820px) { .hero { grid-template-columns: 1fr; } .hero .mark { order: -1; } }
  .hero h1 { margin: 8px 0 18px; }
  .hero .tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 26px; }
  .tag { font-size: 12px; font-family: var(--mono); color: var(--dim); border: 1px solid var(--line); border-radius: 999px; padding: 6px 13px; }
  .tag b { color: var(--text); font-weight: 600; }
  .hero .mark { display: grid; place-items: center; }
  .hero .mark svg {
    width: min(240px, 58vw); height: auto; transform: rotate(45deg);
    filter: drop-shadow(0 30px 80px rgba(47,142,212,0.45)) drop-shadow(0 10px 28px rgba(0,0,0,0.5));
  }
  .cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
  .btn { font-family: inherit; font-size: 14px; font-weight: 600; padding: 12px 20px; border-radius: 999px; cursor: pointer; border: 1px solid var(--line); color: var(--text); background: transparent; transition: transform .15s, border-color .2s, background .2s; }
  .btn:hover { transform: translateY(-2px); border-color: rgba(255,255,255,0.25); }
  .btn.primary { background: var(--grad); border: none; color: #fff; box-shadow: 0 12px 30px -10px rgba(236,106,64,0.6); }

  /* ---- cards ---- */
  .grid { display: grid; gap: 16px; margin-top: 32px; }
  .cols-2 { grid-template-columns: repeat(2, 1fr); }
  .cols-3 { grid-template-columns: repeat(3, 1fr); }
  @media (max-width: 760px) { .cols-2, .cols-3 { grid-template-columns: 1fr; } }
  .card {
    background: linear-gradient(180deg, var(--panel), var(--bg2));
    border: 1px solid var(--line); border-radius: var(--r); padding: 22px;
    transition: transform .2s, border-color .2s;
  }
  .card:hover { transform: translateY(-3px); border-color: rgba(255,255,255,0.18); }
  .card .ic { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; margin-bottom: 14px;
    background: rgba(236,106,64,0.12); color: var(--coral); font-size: 19px; }
  .card.blue .ic { background: rgba(47,142,212,0.12); color: var(--blue); }
  .card.teal .ic { background: rgba(25,195,154,0.12); color: var(--teal); }
  .card h3 { margin-bottom: 6px; }
  .card p { color: var(--dim); font-size: 14px; }
  .card .meta { font-family: var(--mono); font-size: 11px; color: var(--faint); margin-top: 12px; }

  .pillars { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; margin-top: 30px; }
  @media (max-width: 760px){ .pillars { grid-template-columns: 1fr; } }
  .pillar { padding: 26px; border-right: 1px solid var(--line2); }
  .pillar:last-child { border-right: none; }
  .pillar .n { font-family: var(--mono); font-size: 12px; color: var(--coral); }
  .pillar h3 { margin: 8px 0 6px; font-size: 17px; }
  .pillar p { color: var(--dim); font-size: 13.5px; }

  /* ---- diagram ---- */
  .diagram { margin-top: 26px; background: var(--bg2); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; overflow-x: auto; }
  .diagram .mermaid { display: flex; justify-content: center; min-width: min-content; }
  figcaption { font-size: 13px; color: var(--faint); margin-top: 12px; text-align: center; }

  /* ---- code ---- */
  .code { position: relative; background: #040d13; border: 1px solid var(--line); border-radius: var(--r-sm); margin-top: 20px; }
  .code pre { padding: 18px 20px; overflow-x: auto; font-family: var(--mono); font-size: 13px; line-height: 1.7; color: #cfe0e6; }
  .code .cmt { color: var(--faint); }
  .code button { position: absolute; top: 10px; right: 10px; font-family: var(--mono); font-size: 11px; color: var(--dim); background: rgba(255,255,255,0.05); border: 1px solid var(--line); border-radius: 7px; padding: 4px 9px; cursor: pointer; }
  .code button:hover { color: var(--text); }

  ul.clean { list-style: none; margin-top: 16px; display: grid; gap: 10px; }
  ul.clean li { color: var(--dim); font-size: 14.5px; padding-left: 26px; position: relative; }
  ul.clean li::before { content: "›"; position: absolute; left: 6px; color: var(--coral); font-weight: 700; }
  ul.clean li b { color: var(--text); font-weight: 600; }

  footer { text-align: center; padding: 50px 0 70px; color: var(--faint); font-size: 13px; border-top: 1px solid var(--line2); }
  footer .mono { color: var(--dim); }

/* ---- generated doc pages (prose) ---- */
nav .brand { color: var(--text); }
.doc { max-width: 760px; margin: 0 auto; padding: 48px 0 24px; }
.doc h1 { font-size: clamp(30px, 5vw, 44px); margin: 0 0 18px; }
.doc h2 { font-size: 26px; margin: 40px 0 12px; padding-top: 16px; border-top: 1px solid var(--line2); }
.doc h3 { font-size: 18px; margin: 26px 0 8px; }
.doc p, .doc li { color: var(--dim); }
.doc p { margin: 12px 0; }
.doc a { color: var(--blue); border-bottom: 1px solid color-mix(in srgb, var(--blue) 40%, transparent); }
.doc a:hover { color: #67b2ec; }
.doc strong, .doc b { color: var(--text); }
.doc em { color: var(--text); }
.doc ul, .doc ol { margin: 12px 0; padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc code { background: rgba(255,255,255,0.07); padding: 2px 6px; border-radius: 5px; color: #cfe0e6; }
.doc .code { margin: 18px 0; }
.doc .code pre { padding: 16px 18px; }
.doc .code code { background: none; padding: 0; }
.doc blockquote { margin: 16px 0; padding: 10px 18px; border-left: 3px solid var(--coral);
  background: rgba(236,106,64,0.07); border-radius: 0 8px 8px 0; }
.doc blockquote p { color: var(--text); margin: 4px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; }
.doc th, .doc td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line2); }
.doc th { color: var(--text); font-weight: 600; }
.doc td { color: var(--dim); }
.doc hr { border: none; border-top: 1px solid var(--line2); margin: 28px 0; }
.doc .mermaid { display: flex; justify-content: center; margin: 22px 0; padding: 20px;
  background: var(--bg2); border: 1px solid var(--line); border-radius: var(--r); overflow-x: auto; }

/* documentation links grid on the landing page */
.doclinks a { display: block; }
.doclinks a:hover .card { transform: translateY(-3px); border-color: rgba(255,255,255,0.18); }