:root {
  --bg: #f6f5f1;
  --bg-2: #ecebe5;
  --panel: #ffffff;
  --ink: #16170f;
  --ink-2: #4a4b42;
  --ink-3: #7a7b70;
  --line: #d9d8cf;
  --accent: #e2570f;
  --accent-ink: #ffffff;
  --err: #c8322b;
  --warn: #a96a00;
  --ok: #24813b;
  --term-bg: #13140f;
  --term-ink: #e7e6dc;
  --term-mut: #8d8e82;
  --term-loc: #7cb8ff;
  --term-err: #ff6b62;
  --term-ok: #6fd387;
  --code-k: #9a3a0b;
  --code-s: #24813b;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0f0d;
    --bg-2: #161713;
    --panel: #141511;
    --ink: #ecebe3;
    --ink-2: #b6b5aa;
    --ink-3: #85857a;
    --line: #2a2b25;
    --accent: #ff7a2e;
    --accent-ink: #160a02;
    --err: #ff6b62;
    --warn: #e2a63b;
    --ok: #6fd387;
    --term-bg: #0a0b09;
    --code-k: #ff9a5c;
    --code-s: #8fd99f;
  }
}

:root[data-theme="dark"] {
  --bg: #0e0f0d;
  --bg-2: #161713;
  --panel: #141511;
  --ink: #ecebe3;
  --ink-2: #b6b5aa;
  --ink-3: #85857a;
  --line: #2a2b25;
  --accent: #ff7a2e;
  --accent-ink: #160a02;
  --err: #ff6b62;
  --warn: #e2a63b;
  --ok: #6fd387;
  --term-bg: #0a0b09;
  --code-k: #ff9a5c;
  --code-s: #8fd99f;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  overflow-x: hidden;
}

a { color: inherit; }
code, pre { font-family: var(--mono); }
:not(pre) > code {
  font-size: 0.88em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--bg-2);
  border: 1px solid var(--line);
}

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 58px; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; letter-spacing: -0.01em; }
.brand svg { fill: var(--accent); }
.nav nav { display: flex; gap: 22px; font-size: 14px; }
.nav nav a { text-decoration: none; color: var(--ink-2); }
.nav nav a:hover { color: var(--ink); }
.nav nav .gh { color: var(--ink); font-weight: 600; }
@media (max-width: 760px) { .nav nav a:not(.gh) { display: none; } }

/* HERO */
.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  padding: 88px 0 72px;
}
.eyebrow { margin: 0 0 18px; font: 600 13px/1.4 var(--mono); color: var(--ink-3); letter-spacing: 0.02em; }
h1 {
  margin: 0;
  font-size: clamp(2.3rem, 5.4vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 800;
}
.hl { color: var(--accent); }
.lede { margin: 24px 0 28px; font-size: 1.15rem; color: var(--ink-2); max-width: 36em; }
.install {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 10px 10px 10px 16px;
  background: var(--term-bg); color: var(--term-ink);
  border-radius: var(--radius);
  font-family: var(--mono);
  max-width: 100%;
}
.install code { background: none; border: 0; padding: 0; font-size: 15px; color: var(--term-ink); }
.install code::before { content: "$ "; color: var(--term-mut); }
.copy {
  font: 600 12px/1 var(--sans);
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
}
.install .copy { background: #2a2b24; color: #e7e6dc; border-color: #3a3b33; }
.copy:hover { border-color: var(--accent); }
.copy.done { border-color: var(--ok); color: var(--ok); }
.cta { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; height: 44px; padding: 0 18px;
  border-radius: var(--radius); border: 1px solid var(--line);
  text-decoration: none; font-weight: 600; font-size: 15px;
  background: var(--panel);
}
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.fine { margin: 18px 0 0; font-size: 13px; color: var(--ink-3); }

.layers { margin: 0; }
.layers svg { width: 100%; height: auto; display: block; }
.layer rect { fill: var(--panel); stroke: var(--line); stroke-width: 1.5; }
.layer.model rect { fill: var(--bg-2); }
.layer text { fill: var(--ink); font: 600 14px var(--mono); }
.edge { stroke: var(--ink-3); stroke-width: 1.5; fill: none; }
.arrow-ok { fill: var(--ink-3); }
.bypass { stroke: var(--err); stroke-width: 2.2; fill: none; stroke-dasharray: 6 5; animation: dash 1.4s linear infinite; }
.arrow-bad { fill: var(--err); }
.stamp rect { fill: var(--bg); stroke: var(--err); stroke-width: 2; }
.stamp text { fill: var(--err); font: 800 14px var(--mono); letter-spacing: 0.04em; }
.stamp text.small { font: 600 11px var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
@keyframes dash { to { stroke-dashoffset: -22; } }
@media (prefers-reduced-motion: reduce) { .bypass { animation: none; } }
.layers figcaption { margin-top: 10px; font-size: 14px; color: var(--ink-3); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 56px 0 40px; gap: 36px; }
  .layers { max-width: 420px; }
}

/* SECTIONS */
section { padding: 72px 0; }
.section-head { max-width: 46em; margin-bottom: 32px; }
h2 { margin: 0 0 10px; font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.025em; line-height: 1.12; }
.section-head p { margin: 0; color: var(--ink-2); font-size: 1.05rem; }
h3 { margin: 0 0 8px; font-size: 1.08rem; letter-spacing: -0.01em; }

.problem { padding-top: 24px; border-top: 1px solid var(--line); }
.cols3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding-top: 40px; }
.cols3 p { margin: 0; color: var(--ink-2); }
.cols3 > div:last-child h3 { color: var(--err); }
@media (max-width: 760px) { .cols3 { grid-template-columns: 1fr; gap: 22px; } }

/* DEMO */
.demo-controls { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.seg { display: inline-flex; padding: 4px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.seg button {
  font: 600 14px var(--sans); color: var(--ink-2);
  padding: 8px 14px; border: 0; border-radius: 7px; background: transparent; cursor: pointer;
}
.seg button[aria-selected="true"] { background: var(--ink); color: var(--bg); }
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 960px) { .demo-grid { grid-template-columns: 1fr; } }
.pane { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; min-width: 0; }
.pane.term { background: var(--term-bg); border-color: var(--term-bg); }
.pane-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  font: 12px var(--mono); color: var(--ink-3);
}
.term .pane-bar { border-color: #24251f; color: var(--term-mut); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }
pre { margin: 0; overflow-x: auto; }
.code, .out { padding: 16px 18px; font-size: 13px; line-height: 1.6; tab-size: 4; }
.code { color: var(--ink); }
.out { color: var(--term-ink); min-height: 100%; }
.out .mut { color: var(--term-mut); }
.out .loc { color: var(--term-loc); }
.out .err { color: var(--term-err); font-weight: 700; }
.out .ok { color: var(--term-ok); font-weight: 700; }
.code .k { color: var(--code-k); }
.code .s { color: var(--code-s); }

/* HOW */
.steps { list-style: none; margin: 0 0 56px; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--panel); }
.steps li { padding: 22px; border-right: 1px solid var(--line); }
.steps li:last-child { border-right: 0; }
.steps .n { display: block; font: 700 12px var(--mono); color: var(--accent); margin-bottom: 14px; }
.steps p { margin: 0; color: var(--ink-2); font-size: 15px; }
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr 1fr; }
  .steps li:nth-child(2) { border-right: 0; }
  .steps li:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .steps li { border-right: 0; border-bottom: 1px solid var(--line); }
  .steps li:last-child { border-bottom: 0; }
}
.contract { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: start; }
.contract p { color: var(--ink-2); margin: 0 0 14px; }
.contract .code { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
@media (max-width: 900px) { .contract { grid-template-columns: 1fr; gap: 20px; } }

/* RULES */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 13px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 12px var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.06em; }
tr:last-child td { border-bottom: 0; }
td:first-child { white-space: nowrap; }
td:nth-child(2) { color: var(--ink-2); }
.tag { font: 600 12px var(--mono); padding: 2px 8px; border-radius: 999px; border: 1px solid currentColor; }
.tag.e { color: var(--err); }
.tag.w { color: var(--warn); }

/* CI */
.cols2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .cols2 { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); padding: 24px; min-width: 0; }
.card h3 code { font-size: 0.9em; }
.card p { color: var(--ink-2); margin: 0 0 16px; font-size: 15px; }
.code.small { font-size: 12.5px; background: var(--bg-2); border-radius: 8px; border: 1px solid var(--line); }

/* HONEST */
.honest { border-top: 1px solid var(--line); }
.limits { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 40px; }
.limits li { color: var(--ink-2); padding-left: 18px; position: relative; }
.limits li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 8px; height: 2px; background: var(--ink-3); }
.limits strong { color: var(--ink); }
@media (max-width: 760px) { .limits { grid-template-columns: 1fr; } }
.more { margin: 24px 0 0; }
.more a { color: var(--accent); font-weight: 600; text-decoration: none; }

/* QUICKSTART */
.cmds { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); counter-reset: c; }
.cmds li {
  counter-increment: c;
  display: grid; grid-template-columns: auto minmax(0, max-content) 1fr auto; align-items: center; gap: 16px;
  padding: 14px 18px; border-bottom: 1px solid var(--line);
}
.cmds li:last-child { border-bottom: 0; }
.cmds li::before { content: counter(c); font: 700 12px var(--mono); color: var(--accent); width: 1.2em; }
.cmds code { background: none; border: 0; padding: 0; font-size: 14px; white-space: nowrap; overflow-x: auto; }
.cmds span { color: var(--ink-3); font-size: 14px; }
@media (max-width: 760px) {
  .cmds li { grid-template-columns: auto 1fr auto; row-gap: 4px; }
  .cmds span { grid-column: 2 / 4; grid-row: 2; }
  .cmds code { white-space: normal; word-break: break-all; }
}

/* FOOTER */
.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 14px; color: var(--ink-3); }
.foot-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot a { margin-left: 18px; text-decoration: none; color: var(--ink-2); }
.foot a:first-child { margin-left: 0; }
.foot a:hover { color: var(--ink); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Grid children must be allowed to shrink below their content (long code lines scroll inside). */
.hero > *, .contract > *, .cols2 > *, .cols3 > *, .demo-grid > *, .steps > * { min-width: 0; }