@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("./assets/InterVariable.woff2") format("woff2-variations");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/JetBrainsMono-Regular.woff2") format("woff2");
}

:root {
  --ink: #17251f;
  --ink-soft: #2d4439;
  --cream: #f4f0e8;
  --paper: #fffdf8;
  --paper-muted: #ebe6db;
  --line: #d7d0c2;
  --muted: #627067;
  --moss: #285c4b;
  --moss-dark: #173e32;
  --coral: #e87055;
  --coral-dark: #a8402f;
  --yellow: #f2c66d;
  --blue: #b8d9e5;
  --code: #16241f;
  --code-text: #e9f3eb;
  --radius: 18px;
  --radius-sm: 10px;
  --max: 1180px;
  --gutter: 28px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--cream);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--moss); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--coral-dark); }
button, input { font: inherit; }
button { cursor: pointer; }
code, pre { font-family: var(--mono); }
::selection { color: var(--paper); background: var(--coral-dark); }
:focus-visible { outline: 3px solid var(--coral); outline-offset: 4px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max), calc(100% - 2 * var(--gutter)));
  min-height: 74px;
  margin: 0 auto;
  background: color-mix(in srgb, var(--cream) 90%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 780;
  letter-spacing: -.045em;
  text-decoration: none;
}
.brand img { width: 32px; height: 32px; border-radius: 9px; box-shadow: 0 3px 0 rgba(18, 61, 50, .14); }
.site-header nav { display: flex; align-items: center; gap: 26px; }
.site-header nav a {
  color: var(--ink-soft);
  font-size: .88rem;
  font-weight: 650;
  text-decoration: none;
}
.site-header nav a.active, .site-header nav a:hover { color: var(--coral-dark); }

.hero {
  width: 100%;
  color: var(--paper);
  background: var(--ink);
}
.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  gap: clamp(44px, 7vw, 100px);
  align-items: center;
  width: min(var(--max), calc(100% - 2 * var(--gutter)));
  min-height: 650px;
  margin: 0 auto;
  padding: 86px 0 94px;
}
.hero-copy { min-width: 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--yellow);
  font: 700 .7rem/1.2 var(--mono);
  letter-spacing: .11em;
  text-transform: uppercase;
}
.eyebrow-dark { color: var(--moss); }
.eyebrow-dot, .status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(232, 112, 85, .17);
}
.hero h1 {
  max-width: 700px;
  margin: 22px 0 24px;
  color: var(--paper);
  font-size: clamp(3.2rem, 7vw, 6.8rem);
  font-weight: 720;
  line-height: .94;
  letter-spacing: -.085em;
}
.lede {
  max-width: 570px;
  margin: 0;
  color: #c8d6ce;
  font-size: clamp(1.08rem, 1.7vw, 1.3rem);
  line-height: 1.55;
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform .16s ease, background .16s ease, border-color .16s ease, color .16s ease;
}
.button:hover { transform: translateY(-2px); text-decoration: none; }
.button.primary { color: var(--ink); background: var(--yellow); border-color: var(--yellow); }
.button.primary:hover { color: var(--ink); background: #ffdb8a; }
.button.secondary { color: var(--paper); background: transparent; border-color: #718177; }
.button.secondary:hover { color: var(--paper); background: #30483d; border-color: #a9bdb1; }
.hero-footnote {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 28px 0 0;
  color: #93aa9d;
  font: 400 .72rem/1.5 var(--mono);
}
.hero-demo-wrap { position: relative; }
.hero-demo-label {
  position: absolute;
  top: -16px;
  right: 22px;
  z-index: 1;
  padding: 7px 11px;
  color: var(--ink);
  background: var(--coral);
  font: 700 .66rem var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  transform: rotate(2deg);
}
.hero-demo {
  position: relative;
  padding: 28px;
  background: #22352c;
  border: 1px solid #4c685b;
  border-radius: var(--radius);
  box-shadow: 18px 18px 0 rgba(232, 112, 85, .22);
}
.demo-topline { display: flex; justify-content: space-between; color: #91aa9c; font: 700 .68rem var(--mono); letter-spacing: .08em; }
.demo-live { color: var(--yellow); }
.demo-live i { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--yellow); }
.formula { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 34px 0; }
.formula span, .formula em { color: #8ca89a; font: 400 .72rem var(--mono); font-style: normal; }
.formula strong { color: var(--paper); font: 550 1.2rem var(--mono); }
.formula em { grid-column: 1; }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.solver-demo label { display: grid; gap: 7px; color: #a7bbae; font: 400 .7rem var(--mono); }
.solver-demo input {
  width: 100%;
  min-height: 43px;
  padding: 0 12px;
  color: var(--paper);
  background: #15241e;
  border: 1px solid #516b5e;
  border-radius: var(--radius-sm);
  font: 600 .95rem var(--mono);
}
.solver-demo input:focus { border-color: var(--yellow); outline: 2px solid var(--yellow); outline-offset: 2px; }
.demo-button { width: 100%; margin-top: 14px; color: var(--ink); background: var(--paper); }
.demo-button:hover { color: var(--ink); background: var(--yellow); }
.solver-output { display: grid; gap: 11px; margin-top: 22px; padding-top: 19px; border-top: 1px solid #4c685b; }
.output-label { color: #9db2a5; font: 400 .7rem var(--mono); }
.allocation { display: flex; overflow: hidden; height: 14px; border-radius: 99px; background: #4d6559; }
.allocation b { display: block; height: 100%; }
.allocation b:first-child { background: var(--coral); }
.allocation b:last-child { background: var(--yellow); }
.output-values { display: flex; justify-content: space-between; color: var(--paper); font: 600 .78rem var(--mono); }
.output-error { color: #ffb09d; font: 600 .8rem var(--mono); }
.demo-caption { margin: 18px 0 0; color: #8fa79a; font-size: .73rem; line-height: 1.5; }
.demo-note { max-width: 430px; margin: 16px 0 0; color: #c8d6ce; font-size: .78rem; }

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: min(var(--max), calc(100% - 2 * var(--gutter)));
  margin: 0 auto;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.signal-strip div { display: grid; gap: 4px; padding: 20px 22px; border-left: 1px solid var(--line); color: var(--muted); font-size: .74rem; }
.signal-value { color: var(--coral-dark); font: 700 .7rem var(--mono); }

.section { width: min(var(--max), calc(100% - 2 * var(--gutter))); margin: 0 auto; }
.principles { padding: 124px 0 112px; }
.section-heading { max-width: 760px; }
.section-heading h2, .workflow h2, .closing h2 {
  max-width: 760px;
  margin: 16px 0 16px;
  color: var(--ink);
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  font-weight: 710;
  line-height: .98;
  letter-spacing: -.075em;
}
.section-intro { max-width: 570px; margin: 0; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 58px; }
.principle-card { min-height: 310px; padding: 26px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.principle-card:nth-child(2) { transform: translateY(28px); background: var(--blue); border-color: #94bdc9; }
.principle-card:nth-child(3) { background: var(--yellow); border-color: #dbb35e; }
.number { color: #6f291f; font: 700 .69rem var(--mono); letter-spacing: .08em; }
.principle-card h3 { margin: 74px 0 10px; font-size: 1.55rem; letter-spacing: -.04em; }
.principle-card p { min-height: 82px; margin: 0 0 20px; color: var(--ink-soft); font-size: .91rem; line-height: 1.6; }
.principle-card code { padding: 2px 5px; color: var(--moss-dark); background: rgba(255,255,255,.45); border-radius: 4px; font-size: .82em; }
.principle-card a, .text-link { color: var(--ink); font-size: .8rem; font-weight: 750; text-decoration: none; }
.principle-card a:hover, .text-link:hover { color: var(--coral-dark); }

.workflow { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 10vw, 150px); padding: 112px 0 132px; border-top: 1px solid var(--line); }
.workflow-steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.workflow-steps li { display: grid; grid-template-columns: 58px 1fr; gap: 20px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.workflow-steps li > span { color: var(--coral-dark); font: 700 .72rem var(--mono); }
.workflow-steps strong { display: block; margin-bottom: 4px; font-size: 1.02rem; }
.workflow-steps p { margin: 0; color: var(--muted); font-size: .9rem; }
.text-link { display: inline-flex; gap: 8px; margin-top: 30px; padding-bottom: 5px; border-bottom: 1px solid var(--coral); }

.closing { display: flex; align-items: end; justify-content: space-between; gap: 28px; width: min(var(--max), calc(100% - 2 * var(--gutter))); margin: 0 auto 22px; padding: 45px; color: var(--paper); background: var(--moss); border-radius: var(--radius); }
.closing h2 { max-width: 600px; margin-bottom: 12px; color: var(--paper); }
.closing p:last-child { margin: 0; color: #c4d3c9; }
.closing .button { flex: 0 0 auto; }
.notice { display: flex; justify-content: space-between; gap: 20px; align-items: center; width: min(var(--max), calc(100% - 2 * var(--gutter))); margin: 0 auto; padding: 18px 0 62px; color: var(--muted); font-size: .82rem; }
.notice p { margin: 0; }
.notice a { color: var(--coral-dark); font-weight: 700; text-decoration: none; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; width: min(var(--max), calc(100% - 2 * var(--gutter))); margin: 0 auto; padding: 28px 0 46px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.site-footer a { color: var(--moss); font-weight: 700; text-decoration: none; }

/* Documentation */
.docs { padding-bottom: 70px; }
.doc-page { display: grid; grid-template-columns: 210px minmax(0, 760px); gap: clamp(36px, 8vw, 110px); width: min(var(--max), calc(100% - 2 * var(--gutter))); margin: 0 auto; padding: 72px 0 40px; }
.doc-nav { position: sticky; top: 98px; align-self: start; display: grid; gap: 11px; padding: 18px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); }
.doc-nav .eyebrow { padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.doc-nav a { color: var(--muted); font-size: .84rem; font-weight: 650; text-decoration: none; }
.doc-nav a:hover { color: var(--coral-dark); }
.prose { min-width: 0; }
.prose h1 { margin: 0 0 30px; font-size: clamp(2.5rem, 5vw, 4.5rem); line-height: .98; letter-spacing: -.075em; }
.prose h2 { margin-top: 2.5em; font-size: 1.8rem; letter-spacing: -.04em; }
.prose h3 { margin-top: 1.8em; font-size: 1.25rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose pre { overflow-x: auto; padding: 20px; color: var(--code-text); background: var(--code); border-radius: var(--radius-sm); }
.prose pre code { color: inherit; }
.prose :not(pre) > code { padding: .15em .35em; color: var(--moss-dark); background: #dbe9df; border-radius: 4px; }
.prose table { display: block; overflow-x: auto; border-collapse: collapse; }
.prose th, .prose td { padding: 10px 14px; border: 1px solid var(--line); text-align: left; }
.prose th { background: var(--paper-muted); }
.prose blockquote { margin: 24px 0; padding: 14px 18px; background: var(--paper-muted); border-left: 4px solid var(--coral); }

.architecture-graph {
  margin: 34px 0 48px;
  padding: clamp(22px, 4vw, 38px);
  background: var(--moss);
  border-radius: var(--radius);
  color: var(--paper);
  box-shadow: 14px 14px 0 rgba(232, 112, 85, .18);
}
.architecture-graph-heading { max-width: 560px; }
.architecture-graph-heading .eyebrow { color: var(--yellow); }
.architecture-graph-heading h3 { margin: 12px 0 10px; color: var(--paper); font-size: clamp(1.5rem, 3vw, 2.2rem); letter-spacing: -.05em; }
.architecture-graph-heading p:last-child { margin: 0; color: #c4d3c9; font-size: .9rem; line-height: 1.6; }
.architecture-flow { display: grid; grid-template-columns: minmax(120px, 1fr) 72px minmax(120px, 1fr) 72px minmax(140px, 1.2fr) 1.35fr 72px minmax(140px, 1fr); align-items: center; gap: 12px; margin: 34px 0 0; padding: 0; list-style: none; }
.architecture-node { display: grid; align-content: start; gap: 10px; min-height: 154px; padding: 17px; color: var(--ink); background: var(--paper); border: 1px solid rgba(248, 241, 229, .4); border-radius: var(--radius-sm); }
.architecture-node-input { background: var(--yellow); }
.architecture-node-contracts { background: var(--blue); }
.architecture-node-output { background: var(--coral); }
.architecture-step { color: var(--coral-dark); font: 700 .67rem var(--mono); letter-spacing: .08em; }
.architecture-node strong { font-size: .95rem; line-height: 1.15; }
.architecture-node small, .architecture-branch-node small { color: var(--ink-soft); font: 400 .69rem/1.5 var(--mono); }
.architecture-node code { padding: 1px 3px; background: rgba(255, 255, 255, .4); border-radius: 3px; font-size: .9em; }
.architecture-connector { display: grid; justify-items: center; gap: 9px; color: #b8cabe; font: 700 .58rem var(--mono); text-align: center; text-transform: uppercase; }
.architecture-connector i { display: block; position: relative; width: 100%; height: 1px; background: #b8cabe; }
.architecture-connector i::after { position: absolute; top: -4px; right: 0; width: 8px; height: 8px; border-top: 1px solid #b8cabe; border-right: 1px solid #b8cabe; content: ""; transform: rotate(45deg); }
.architecture-branch { display: grid; align-content: center; gap: 10px; min-height: 154px; padding: 13px; border: 1px dashed #7f9e8c; border-radius: var(--radius-sm); }
.architecture-branch-label { color: var(--yellow); font: 700 .62rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.architecture-branch-grid { display: grid; gap: 7px; }
.architecture-branch-node { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 7px; padding: 8px 9px; color: var(--ink); background: var(--paper); border-radius: 5px; }
.architecture-branch-node strong { font-size: .72rem; }
.architecture-branch-node small { font-size: .58rem; text-align: right; }
.architecture-graph-fallback { margin: 26px 0 0; padding-top: 18px; color: #c4d3c9; border-top: 1px solid #4c685b; font-size: .75rem; line-height: 1.55; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; min-height: 0; padding: 76px 0 84px; }
  .hero-demo-wrap { max-width: 620px; }
  .workflow { grid-template-columns: 1fr; gap: 48px; }
  .workflow-copy { max-width: 650px; }
  .doc-page { grid-template-columns: 180px minmax(0, 1fr); gap: 34px; }
  .architecture-flow { grid-template-columns: 1fr 48px 1fr 48px 1fr; }
  .architecture-flow .architecture-branch { grid-column: 1 / -1; }
  .architecture-flow .architecture-branch + .architecture-connector { grid-column: 2 / 5; }
  .architecture-flow .architecture-node-output { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  :root { --gutter: 20px; }
  .hero-inner { width: calc(100vw - 2 * var(--gutter)); min-width: 0; max-width: calc(100vw - 2 * var(--gutter)); }
  .hero-copy, .hero-demo-wrap, .hero-demo { width: 100%; min-width: 0; max-width: 100%; }
  .site-header { min-height: 66px; }
  .site-header nav { gap: 14px; }
  .site-header nav a:last-child { display: none; }
  .hero-inner { padding: 64px 0 72px; }
  .hero h1 { max-width: 245px; font-size: clamp(2.45rem, 13vw, 4.4rem); overflow-wrap: anywhere; word-break: break-word; }
  .lede { max-width: 245px; font-size: 1rem; overflow-wrap: anywhere; }
  .hero-footnote { align-items: flex-start; font-size: .66rem; }
  .hero-demo { padding: 22px; box-shadow: 10px 10px 0 rgba(232, 112, 85, .22); }
  .input-row { grid-template-columns: 1fr; }
  .actions { flex-direction: column; align-items: stretch; }
  .actions .button { width: 100%; }
  .signal-strip { grid-template-columns: repeat(2, 1fr); }
  .signal-strip div { min-height: 80px; }
  .principles { padding: 82px 0 74px; }
  .section-heading h2, .workflow h2, .closing h2 { font-size: clamp(2.45rem, 12vw, 4rem); }
  .card-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 38px; }
  .principle-card { min-height: 0; }
  .principle-card:nth-child(2) { transform: none; }
  .principle-card h3 { margin-top: 48px; }
  .principle-card p { min-height: 0; }
  .workflow { padding: 74px 0 84px; }
  .closing { align-items: flex-start; flex-direction: column; padding: 28px 24px; }
  .notice, .site-footer { align-items: flex-start; flex-direction: column; }
  .doc-page { grid-template-columns: 1fr; padding-top: 42px; }
  .doc-nav { position: static; grid-template-columns: repeat(2, 1fr); }
  .doc-nav .eyebrow { grid-column: 1 / -1; }
  .architecture-flow { display: grid; grid-template-columns: 1fr; gap: 10px; }
  .architecture-flow .architecture-connector, .architecture-flow .architecture-branch, .architecture-flow .architecture-node-output, .architecture-flow .architecture-branch + .architecture-connector { grid-column: auto; }
  .architecture-connector { grid-template-columns: 1fr auto; justify-items: stretch; align-items: center; gap: 10px; }
  .architecture-connector i { width: 1px; height: 26px; justify-self: center; }
  .architecture-connector i::after { top: auto; right: -4px; bottom: -1px; transform: rotate(135deg); }
  .architecture-branch-node { grid-template-columns: 1fr; gap: 2px; }
  .architecture-branch-node small { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}