:root {
  color-scheme: light;
  --ink: #1d2025;
  --muted: #5b626b;
  --line: #c9c8c0;
  --paper: #f5f1e8;
  --surface: #e9e8e1;
  --accent: #3348b8;
  --accent-dark: #202e7f;
  --warm: #be4728;
  --accent-soft: #e1e6ff;
  --code: #20243b;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: .002em;
}

a { color: var(--accent-dark); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--warm); outline-offset: 3px; border-radius: 2px; }

.shell { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }

.site-header { border-bottom: 1px solid var(--line); background: rgba(245, 241, 232, .96); }
.header-content { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-weight: 800; letter-spacing: .08em; text-decoration: none; }
.brand-mark { display: block; width: 29px; height: 29px; object-fit: contain; }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .82rem; letter-spacing: .035em; }
nav a { text-decoration: none; }
.github-link { display: inline-grid; width: 24px; height: 24px; place-items: center; color: var(--ink); }
.github-link:hover { color: var(--accent); }
.github-link svg { width: 20px; height: 20px; fill: currentColor; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.hero { padding: 112px 0 96px; max-width: 880px; margin-left: max(24px, calc((100% - var(--max)) / 2)); }
.eyebrow { margin: 0 0 13px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .72rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
h1, h2, h3 { margin: 0; color: var(--ink); font-family: Iowan Old Style, Palatino Linotype, Book Antiqua, Palatino, Georgia, serif; line-height: 1.08; letter-spacing: -.025em; }
h1 { max-width: 860px; font-size: clamp(2.6rem, 6vw, 5.2rem); }
h2 { font-size: clamp(1.85rem, 3.4vw, 3rem); }
h3 { font-size: 1.18rem; }
.lede { max-width: 720px; margin: 26px 0 0; color: var(--muted); font-size: clamp(1.15rem, 2vw, 1.38rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 35px; }
.button { display: inline-flex; align-items: center; min-height: 46px; padding: 10px 17px; border-radius: 2px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .84rem; font-weight: 800; letter-spacing: .03em; text-decoration: none; }
.primary { background: var(--accent); color: #fff; }
.primary:hover { background: var(--accent-dark); color: #fff; }
.secondary { border: 1px solid var(--line); color: var(--ink); }
.secondary:hover { border-color: var(--accent); color: var(--accent-dark); }
.positioning-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 58px; }
.positioning-grid article { padding: 22px 23px; border: 1px solid var(--line); border-top: 4px solid var(--accent); background: #f9f7f1; }
.positioning-grid .eyebrow { margin-bottom: 9px; }
.positioning-grid h2 { font-size: 1.2rem; letter-spacing: -.025em; }
.positioning-grid p:last-child { margin: 11px 0 0; color: var(--muted); font-size: .95rem; }
.analogy { margin-top: 24px; padding: 27px 29px; border: 1px solid #aeb9ee; border-radius: 3px; background: var(--accent-soft); }
.analogy .eyebrow { margin-bottom: 9px; }
.analogy h2 { max-width: 720px; font-size: clamp(1.38rem, 2.6vw, 2rem); }
.analogy p:last-child { max-width: 840px; margin: 12px 0 0; color: var(--muted); }

.agent-activation { padding: 74px 0; background: var(--code); color: #f7f4ed; }
.agent-activation-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 58px; align-items: start; }
.agent-activation h2 { color: #f7f4ed; }
.agent-activation p { color: #d2d1cf; }
.agent-activation .eyebrow { color: #aab8ff; }
.agent-activation a { color: #c7d0ff; }
.agent-activation a:hover { color: #fff; }
.agent-note { margin-top: 24px; padding-left: 16px; border-left: 3px solid var(--warm); font-size: .94rem; }
.prompt-disclosure { }
.prompt-disclosure summary { display: inline-flex; min-height: 46px; padding: 10px 17px; border: 1px solid #6975bb; border-radius: 2px; background: transparent; color: #dce1ff; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .84rem; font-weight: 800; letter-spacing: .03em; cursor: pointer; list-style: none; }
.prompt-disclosure summary::-webkit-details-marker { display: none; }
.prompt-disclosure summary:hover { border-color: #aab8ff; color: #fff; }
.prompt-disclosure[open] summary { margin-bottom: 16px; }
.prompt-panel { border: 1px solid #6975bb; background: #171a2b; }
.prompt-panel-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 54px; padding: 10px 13px 10px 17px; border-bottom: 1px solid #4b558c; color: #dce1ff; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .77rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.copy-button { min-height: 32px; padding: 6px 9px; border: 1px solid #8290d8; border-radius: 2px; background: #e7ebff; color: #202e7f; cursor: pointer; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .75rem; font-weight: 800; letter-spacing: .025em; }
.copy-button:hover { background: #fff; }
.copy-button:focus-visible { outline: 3px solid var(--warm); outline-offset: 3px; }
.agent-prompt { display: block; width: 100%; min-height: 450px; resize: vertical; padding: 20px; border: 0; outline: 0; background: transparent; color: #f4f1ea; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .79rem; line-height: 1.58; }
.copy-status { min-height: 21px; margin: 0; padding: 0 17px 14px; color: #bac5ff !important; font-size: .85rem; }
.prompt-summary-content { padding: 28px; }
.prompt-summary-content h3 { color: #f7f4ed; font-size: 1.45rem; }
.prompt-summary-content p { margin: 14px 0 0; }
.prompt-summary-content .actions { margin-top: 24px; }
.on-dark { border-color: #8290d8; color: #eef0ff !important; }
.on-dark:hover { border-color: #fff; color: #fff !important; }

.section { padding: 86px 0; }
.section-intro { max-width: 690px; margin-bottom: 39px; }
.model-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 16px; }
.mini-flow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 4px; margin: 34px 0 0; padding: 16px 20px; border: 1px solid var(--line); border-radius: 3px; background: #faf8f3; }
.mini-flow span:not(.arrow) { padding: 6px 11px; border: 1px solid var(--line); border-radius: 2px; background: var(--paper); color: var(--ink); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .8rem; font-weight: 750; letter-spacing: .01em; }
.mini-flow .arrow { font-size: 1.05rem; }
.model-card { padding: 27px; border: 1px solid var(--line); border-radius: 3px; background: #faf8f3; }
.model-card p { margin: 14px 0 0; color: var(--muted); }
.number { display: block; margin-bottom: 22px; color: var(--accent); font-size: .78rem; font-weight: 800; letter-spacing: .1em; }
.arrow { align-self: center; color: var(--accent); font-size: 1.55rem; }

.surface { background: var(--surface); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.split p:last-child { margin: 0; color: var(--muted); font-size: 1.12rem; }
.learning-bridge { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: start; }
.learning-bridge p { color: var(--muted); font-size: 1.1rem; }
.learning-bridge p:last-child { margin-bottom: 0; }

.resource-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.resource { display: block; min-height: 205px; padding: 27px; border: 1px solid var(--line); border-radius: 3px; color: inherit; text-decoration: none; transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease; }
.resource:hover { border-color: var(--accent); color: inherit; box-shadow: 0 8px 22px rgba(29, 32, 37, .10); transform: translateY(-2px); }
.resource p { color: var(--muted); }
.resource span { color: var(--accent); font-weight: 750; }

.callout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; border-top: 1px solid var(--line); }
.callout ul { columns: 2; gap: 38px; margin: 0; padding-left: 20px; color: var(--muted); }
.callout li { break-inside: avoid; margin-bottom: 9px; }

.site-footer { padding: 29px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.footer-content { display: flex; justify-content: space-between; gap: 18px; }
.footer-content p { margin: 0; }

.doc-hero { padding: 74px 0 46px; border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; gap: 9px; padding-top: 22px; color: var(--muted); font-size: .86rem; }
.breadcrumbs a { font-weight: 700; }
.document-meta { padding-top: 0; padding-bottom: 44px; color: var(--muted); font-size: .84rem; }
.document-meta p { margin: 0; padding-top: 20px; border-top: 1px solid var(--line); }
.doc-hero h1 { max-width: 800px; font-size: clamp(2.4rem, 5vw, 4.35rem); }
.doc-hero .lede { max-width: 760px; }
.meta-links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 24px; font-size: .95rem; }
.doc-content { width: min(820px, calc(100% - 48px)); margin: 0 auto; padding: 58px 0 96px; }
.doc-content section { margin: 0 0 52px; }
.doc-content h2 { margin-bottom: 18px; font-size: clamp(1.55rem, 3vw, 2.35rem); }
.doc-content h3 { margin: 34px 0 11px; font-size: 1.28rem; }
.doc-content h4 { margin: 25px 0 9px; font-size: 1.03rem; }
.doc-content p, .doc-content li { color: #363b42; }
.doc-content ul, .doc-content ol { padding-left: 23px; }
.doc-content li + li { margin-top: 7px; }
.doc-content table { width: 100%; margin: 22px 0; border-collapse: collapse; font-size: .95rem; }
.doc-content th, .doc-content td { padding: 12px 13px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.doc-content th { background: var(--surface); color: var(--ink); }
.doc-content code { padding: .12em .34em; border-radius: 2px; background: #e4e3dc; color: var(--accent-dark); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; }
.doc-content pre { overflow-x: auto; margin: 20px 0; padding: 20px; border-radius: 3px; background: var(--code); color: #f7f4ed; }
.doc-content pre code { padding: 0; background: transparent; color: inherit; font-size: .92rem; }
.note { margin: 24px 0; padding: 18px 20px; border-left: 4px solid var(--accent); background: var(--surface); }
.definition { padding: 22px 24px; border: 1px solid #aeb9ee; border-left: 5px solid var(--accent); border-radius: 3px; background: var(--accent-soft); font-size: 1.12rem; }
.contract { margin: 26px 0; padding: 24px; border: 1px solid var(--line); border-radius: 3px; background: #faf8f3; }
.contract h3 { margin-top: 0; }
.contract dl { display: grid; grid-template-columns: 170px 1fr; gap: 9px 20px; margin: 20px 0 0; }
.contract dt { font-weight: 750; color: var(--ink); }
.contract dd { margin: 0; color: #363b42; }
.template-block { margin: 22px 0; padding: 24px; border: 1px dashed #979b9c; border-radius: 3px; background: #faf8f3; }
.template-block h3 { margin-top: 0; }
.template-field { display: grid; grid-template-columns: 210px 1fr; gap: 18px; padding: 11px 0; border-bottom: 1px solid var(--line); }
.template-field:last-child { border-bottom: 0; }
.template-field strong { color: var(--ink); }
.tag { display: inline-block; margin: 0 5px 7px 0; padding: 4px 8px; border-radius: 2px; background: #e4e3dc; color: var(--accent-dark); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .76rem; font-weight: 800; }
.media-content { width: min(1040px, calc(100% - 48px)); }
.media-resource { margin: 0 0 34px; padding: 28px; border: 1px solid var(--line); border-radius: 3px; background: #faf8f3; }
.media-resource h2 { margin-bottom: 9px; font-size: clamp(1.55rem, 3vw, 2.25rem); }
.media-resource p { max-width: 780px; }
.media-meta { margin: 0 0 20px; color: var(--muted) !important; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .78rem; font-weight: 800; letter-spacing: .03em; text-transform: uppercase; }
.media-resource audio, .media-resource video { display: block; width: 100%; margin-top: 20px; border-radius: 2px; background: #171a2b; }
.media-resource video { aspect-ratio: 16 / 9; }
.pdf-frame { margin-top: 20px; padding: 24px; border: 1px solid var(--line); background: #fff; }
.pdf-frame p { margin: 0; }
.media-actions { display: flex; flex-wrap: wrap; gap: 16px; margin: 18px 0 0; font-size: .94rem; }
.learning-sequence { margin: 0 0 34px; padding: 28px; border-left: 5px solid var(--warm); background: var(--accent-soft); }
.learning-sequence h2 { margin-bottom: 15px; font-size: clamp(1.55rem, 3vw, 2.25rem); }
.learning-sequence ol { margin: 0; padding-left: 23px; }
.learning-sequence li + li { margin-top: 8px; }

@media (max-width: 760px) {
  .shell { width: min(var(--max), calc(100% - 32px)); }
  .header-content { min-height: 62px; }
  nav { gap: 10px 14px; font-size: .76rem; }
  .hero { padding: 78px 16px 72px; margin-left: 0; }
  .positioning-grid { grid-template-columns: 1fr; margin-top: 40px; }
  .model-flow { grid-template-columns: 1fr; }
  .arrow { justify-self: center; transform: rotate(90deg); }
  .split, .callout, .learning-bridge { grid-template-columns: 1fr; gap: 26px; }
  .agent-activation-grid { grid-template-columns: 1fr; gap: 28px; }
  .resource-grid { grid-template-columns: 1fr; }
  .callout ul { columns: 1; }
  .footer-content { flex-direction: column; }
  .doc-content { width: min(820px, calc(100% - 32px)); }
  .media-content { width: min(1040px, calc(100% - 32px)); }
  .media-resource { padding: 20px; }
  .breadcrumbs { padding-top: 16px; }
  .contract dl, .template-field { grid-template-columns: 1fr; gap: 4px; }
}