/* Layout: left-aligned editorial grid. Calm, infrastructure-serious.
   Boldness sits in one place: the interactive run console in the hero. */
:root {
  --bg: #edf0ee;
  --bg-alt: #e3e8e5;
  --surface: #f8faf9;
  --ink: #11201d;
  --muted: #526660;
  --line: #c6cfcb;
  --accent: #0b6e5f;
  --accent-ink: #ffffff;
  --warn: #9a5200;
  --bad: #a3361f;
  --code-bg: #11201d;
  --code-ink: #dbe8e3;
  --code-dim: #7f9a91;
  --display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", sans-serif;
  --body: "Instrument Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --radius: 6px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c1513; --bg-alt: #101c19; --surface: #142320; --ink: #e5eeea; --muted: #8fa39c;
    --line: #26372f; --accent: #4fd1b5; --accent-ink: #06201a; --warn: #e8a04a; --bad: #f08a72;
    --code-bg: #08100e; --code-ink: #d3e4de; --code-dim: #6f8a81;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c1513; --bg-alt: #101c19; --surface: #142320; --ink: #e5eeea; --muted: #8fa39c;
  --line: #26372f; --accent: #4fd1b5; --accent-ink: #06201a; --warn: #e8a04a; --bad: #f08a72;
  --code-bg: #08100e; --code-ink: #d3e4de; --code-dim: #6f8a81;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; }
code, pre { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

.wrap { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: 20px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; z-index: 50; }
.skip:focus { left: 8px; }

/* type */
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.08; letter-spacing: -0.02em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 5.2vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
.eyebrow { font: 500 0.78rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); margin: 0 0 18px; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 34em; margin: 22px 0 0; }
.lede-sm { color: var(--muted); max-width: 30em; margin: 18px 0 0; }
.sub { color: var(--muted); max-width: 40em; margin: 16px 0 0; }
.sub-left { color: var(--muted); margin: 16px 0 0; }
.prose p { margin: 0 0 1em; max-width: 36em; }
.prose p:last-child { margin-bottom: 0; }
.mini { font: 500 0.78rem/1 var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-top: 1.6em !important; }
code { background: var(--bg-alt); padding: 1px 6px; border-radius: 4px; font-size: 0.92em; }

/* nav */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; gap: 24px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 1.15rem var(--display); letter-spacing: -0.01em; }
.links { display: flex; gap: 22px; margin-inline: auto; font-size: 0.94rem; }
.links a { text-decoration: none; color: var(--muted); }
.links a:hover { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.theme { background: none; border: 1px solid var(--line); color: var(--ink); width: 36px; height: 36px; border-radius: var(--radius); display: grid; place-items: center; cursor: pointer; }
.theme:hover { border-color: var(--accent); }

/* buttons */
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font: 600 1rem var(--body); text-decoration: none; padding: 13px 22px; border: 1px solid var(--accent); border-radius: var(--radius); cursor: pointer; }
.btn:hover { filter: brightness(1.08); }
.btn-sm { padding: 8px 14px; font-size: 0.92rem; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); filter: none; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* sections */
.sec { padding-block: clamp(56px, 8vw, 104px); }
.sec-alt { background: var(--bg-alt); }
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 6vw, 80px); align-items: start; }
.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(28px, 6vw, 80px); }

/* hero */
.hero { padding-top: clamp(40px, 6vw, 80px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5.4fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.proof { list-style: none; margin: clamp(40px, 6vw, 72px) 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.proof li { display: flex; flex-direction: column; gap: 2px; }
.proof strong { font: 600 0.98rem var(--display); }
.proof span { font-size: 0.88rem; color: var(--muted); }

/* console */
.console { margin: 0; background: var(--code-bg); color: var(--code-ink); border-radius: 10px; border: 1px solid var(--line); box-shadow: 0 24px 60px -30px rgba(10, 30, 26, 0.55); overflow: hidden; min-width: 0; }
.console-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.09); font: 400 0.8rem var(--mono); color: var(--code-dim); }
.dots { display: flex; gap: 6px; }
.dots i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); }
.console-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { font: 500 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; border: 1px solid rgba(255, 255, 255, 0.2); padding: 2px 7px; border-radius: 3px; }
.tabs { display: flex; flex-wrap: wrap; gap: 4px; padding: 10px 12px 0; }
.tabs button { font: 500 0.82rem var(--mono); color: var(--code-dim); background: none; border: 0; padding: 8px 10px; border-radius: 4px 4px 0 0; cursor: pointer; border-bottom: 2px solid transparent; }
.tabs button:hover { color: var(--code-ink); }
.tabs button[aria-selected="true"] { color: #fff; border-bottom-color: #4fd1b5; }
.sql { margin: 0; padding: 18px 18px 14px; font-size: 0.86rem; line-height: 1.65; overflow-x: auto; min-height: 7.6em; white-space: pre; }
.sql .k { color: #7fd8c4; }
.sql .f { color: #e8c07a; }
.run { margin: 0; padding: 4px 18px 16px; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 6px 18px; font: 400 0.84rem var(--mono); }
.run dt { color: var(--code-dim); }
.run dd { margin: 0; color: #fff; overflow-wrap: anywhere; }
.run dd.eng { color: #4fd1b5; font-weight: 500; }
.policy { border-top: 1px solid rgba(255, 255, 255, 0.09); padding: 14px 18px 18px; display: grid; gap: 10px; }
.policy label { font: 500 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--code-dim); }
.policy select { font: 400 0.9rem var(--mono); background: rgba(255, 255, 255, 0.06); color: #fff; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 4px; padding: 8px 10px; width: 100%; }
.policy select option { color: #11201d; background: #fff; }
.placement { display: grid; gap: 6px; font: 400 0.82rem var(--mono); }
.pl { display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 4px; background: rgba(255, 255, 255, 0.04); min-width: 0; }
.pl b { font-weight: 500; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.pl em { font-style: normal; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; flex: none; }
.pl.ok em { color: #4fd1b5; }
.pl.no { color: #a9b9b3; }
.pl.no em { color: #f08a72; }

/* steps */
.steps { list-style: none; counter-reset: s; margin: 40px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.steps li { counter-increment: s; padding: 24px 28px 8px 0; position: relative; }
.steps li + li { padding-left: 28px; border-left: 1px solid var(--line); }
.steps li::before { content: counter(s); font: 500 0.8rem var(--mono); color: var(--accent); display: block; margin-bottom: 14px; }
.steps p { color: var(--muted); margin: 10px 0 0; }

/* diagram */
.diagram { margin: 44px 0 0; }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram figcaption { color: var(--muted); font-size: 0.92rem; margin-top: 12px; }
.d-box { fill: var(--surface); stroke: var(--line); stroke-width: 1.5; }
.d-cp { stroke: var(--accent); stroke-width: 2; }
.d-own { stroke-dasharray: 6 5; stroke: var(--accent); }
.d-chip { fill: var(--bg-alt); stroke: var(--line); }
.d-line path { stroke: var(--muted); stroke-width: 1.5; fill: none; }
.d-dash path { display: none; }
.d-h { font: 700 20px var(--display); fill: var(--ink); }
.d-h2 { font: 700 17px var(--display); fill: var(--ink); }
.d-t { font: 400 13.5px var(--body); fill: var(--muted); }
.d-m { font: 500 12px var(--mono); fill: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; }
.d-m2 { font: 500 12.5px var(--mono); fill: var(--ink); }
.d-lab { font: 500 11px var(--mono); fill: var(--accent); letter-spacing: 0.1em; }

/* lists */
.ticks, .plain { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.ticks li { padding-left: 26px; position: relative; max-width: 36em; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.55em; width: 10px; height: 6px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.plain { margin-top: 24px; }
.plain li { padding-top: 14px; border-top: 1px solid var(--line); max-width: 34em; }
.two h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); }

/* engines */
.cards { margin-top: 40px; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.cards .card { grid-column: span 2; }
.cards .card:nth-child(n+4) { grid-column: span 3; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.card header { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.card p { margin: 0; color: var(--muted); font-size: 0.97rem; }
.pill { font: 500 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 8px; border-radius: 3px; border: 1px solid var(--accent); color: var(--accent); }
.pill-warn { border-color: var(--warn); color: var(--warn); }

/* tiles */
.tiles { list-style: none; margin: 14px 0 1.2em; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tiles li { font: 500 0.88rem var(--mono); border: 1px solid var(--line); background: var(--surface); padding: 8px 12px; border-radius: 4px; }

/* terminal */
.term { background: var(--code-bg); color: var(--code-ink); border-radius: 10px; min-width: 0; overflow: hidden; border: 1px solid var(--line); }
.term-bar { display: flex; justify-content: space-between; align-items: center; padding: 8px 8px 8px 16px; border-bottom: 1px solid rgba(255, 255, 255, 0.09); font: 400 0.8rem var(--mono); color: var(--code-dim); }
.copy { font: 500 0.78rem var(--mono); background: rgba(255, 255, 255, 0.08); color: #fff; border: 0; padding: 6px 12px; border-radius: 4px; cursor: pointer; }
.copy:hover { background: rgba(255, 255, 255, 0.16); }
.term pre { margin: 0; padding: 18px; font-size: 0.86rem; line-height: 1.7; overflow-x: auto; }
.term .c { color: var(--code-dim); }

/* roadmap */
.road { list-style: none; margin: 36px 0 0; padding: 0; border-top: 1px solid var(--line); }
.road li { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.road span { color: var(--muted); }

/* faq */
.faq details { border-top: 1px solid var(--line); padding: 16px 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font: 600 1.05rem var(--display); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 1.4rem/1 var(--mono); color: var(--accent); }
.faq details[open] summary::after { content: "\2212"; }
.faq p { margin: 12px 0 0; color: var(--muted); max-width: 36em; }

/* pilot */
.pilot { background: var(--bg); border-top: 1px solid var(--line); }
.pilot-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 6vw, 80px); align-items: start; }
form { display: grid; gap: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: clamp(18px, 3vw, 30px); min-width: 0; }
.f2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field label { font: 500 0.78rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
input, textarea { font: 400 1rem var(--body); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 11px 12px; width: 100%; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
input[aria-invalid="true"] { border-color: var(--bad); }
form .btn { justify-self: start; }
.note { margin: 0; font-size: 0.9rem; color: var(--muted); }
.note.err { color: var(--bad); }
.note.ok { color: var(--accent); }

/* footer */
.foot { border-top: 1px solid var(--line); padding-block: 36px; }
.foot-in { display: flex; flex-wrap: wrap; gap: 16px 32px; align-items: center; }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 0.94rem; }
.foot nav a { color: var(--muted); text-decoration: none; }
.foot nav a:hover { color: var(--ink); }
.foot p { margin: 0 0 0 auto; color: var(--muted); font-size: 0.88rem; max-width: 30em; }
.brand-sm span { font: 700 1.05rem var(--display); }

/* responsive */
@media (max-width: 980px) {
  .links { display: none; }
  .nav-actions { margin-left: auto; }
  .hero-grid, .split, .two, .pilot-grid { grid-template-columns: minmax(0, 1fr); }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards .card, .cards .card:nth-child(n+4) { grid-column: auto; }
  .cards .card:last-child { grid-column: 1 / -1; }
  .proof { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot p { margin-left: 0; }
}
@media (max-width: 640px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
  .steps li + li { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .cards, .f2 { grid-template-columns: minmax(0, 1fr); }
  .cards .card:last-child { grid-column: auto; }
  .road li { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .diagram { overflow-x: auto; }
  .diagram svg { min-width: 640px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* external project links */
a.ext { text-decoration: underline; text-decoration-color: var(--line); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a.ext:hover { color: var(--accent); text-decoration-color: var(--accent); }
.card h3 a.ext::after { content: "\2197"; font: 400 0.8em var(--mono); margin-left: 6px; color: var(--muted); }

/* workspace */
.feat { margin-top: 40px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.fcard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; min-width: 0; }
.fcard p { margin: 10px 0 0; color: var(--muted); font-size: 0.97rem; }
.nb-split { margin-top: clamp(40px, 6vw, 72px); align-items: center; }
.h3-lg { font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.nb-split .plain { margin-top: 20px; }
.nb { margin: 0; }
.tag-dim { border: 1px solid rgba(255,255,255,0.2); padding: 2px 7px; border-radius: 3px; font: 500 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }
.cell { display: grid; grid-template-columns: 74px minmax(0, 1fr); border-bottom: 1px solid rgba(255,255,255,0.09); }
.cell:last-child { border-bottom: 0; }
.cl { font: 500 0.7rem var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--code-dim); padding: 18px 0 0 16px; }
.cell pre { padding: 14px 16px 14px 4px; }
.nb .k { color: #7fd8c4; } .nb .f { color: #e8c07a; } .nb .s { color: #e8a98a; }
@media (max-width: 980px) { .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .feat { grid-template-columns: minmax(0, 1fr); } .cell { grid-template-columns: 64px minmax(0, 1fr); } }