:root {
  color-scheme: light;
  --page: #fcfdff; --card: #fff; --surface: #f4f6fb; --ink: #00021d;
  --body: #3c454e; --muted: #626b78; --line: #e7eaf2;
  --accent: #1742f5; --navy: #070d63; --cyan: #08e9eb; --violet: #7a62ff;
  --diagram: #eef3ff; --accent-soft: #e6edff;
}
[data-theme='dark'] {
  color-scheme: dark;
  --page: #04061a; --card: #0b1030; --surface: #0d1438; --ink: #f6f8ff;
  --body: #c7cede; --muted: #a5b0c7; --line: #283151;
  --accent: #8daaff; --diagram: #111d45; --accent-soft: #182957;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 7rem; }
body { margin: 0; background: var(--page); color: var(--body); font: 1rem/1.65 'Figtree', sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: .25em; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
h1,h2,h3,h4,p { margin: 0; }
h1,h2,h3,h4 { color: var(--ink); line-height: 1.12; }
h1,h2 { letter-spacing: -.045em; }
h2 { font-size: clamp(2rem, 4vw, 3.3rem); }
h3 { font-size: clamp(1.4rem, 2.3vw, 2rem); letter-spacing: -.025em; }
p + p { margin-top: 1rem; }
::selection { background: var(--accent-soft); color: var(--ink); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
[hidden] { display: none !important; }
.wrap { max-width: 1248px; padding-inline: 3rem; margin-inline: auto; }
.section { padding-block: 5.5rem; }
.eyebrow { display: block; font: 500 .75rem/1.6 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .12em; color: var(--navy); margin-bottom: 1.15rem; }
[data-theme='dark'] .eyebrow { color: var(--accent); }
.eyebrow::before { content: ''; display: block; width: 3rem; height: 2px; background: var(--accent); margin-bottom: .7rem; }
.section-intro { max-width: 46rem; margin-bottom: 2.7rem; }
.section-intro p { margin-top: 1rem; font-size: 1.125rem; }
.text-link { display: inline-flex; gap: .7rem; align-items: center; color: var(--accent); font-weight: 600; text-decoration-thickness: 1px; padding-block: .5rem; }
.text-link:hover { text-decoration-thickness: 2px; }
.skip-link { position: fixed; top: -10rem; left: 1rem; z-index: 100; padding: .7rem 1rem; color: var(--ink); background: var(--card); }
.skip-link:focus { top: 1rem; }
.site-header { position: sticky; top: 0; z-index: 20; background: var(--page); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 5.1rem; display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .8rem; color: var(--ink); white-space: nowrap; text-decoration: none; font-size: 1.05rem; }
.brand-mark { font-weight: 800; letter-spacing: -.14em; padding-right: .15em; font-size: 1.65rem; color: var(--navy); }
[data-theme='dark'] .brand-mark { color: var(--ink); }
.main-nav { display: flex; align-items: center; flex-wrap: wrap; justify-content: center; gap: 1.6rem; font-size: .9rem; color: var(--ink); }
.main-nav a { text-decoration: none; padding-block: .6rem; }
.main-nav a:hover { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 1.1rem; }
.header-contact { color: var(--accent); font-size: .9rem; font-weight: 600; text-decoration: none; white-space: nowrap; }
.theme-button { display: inline-flex; align-items: center; gap: .45rem; background: var(--card); border: 1px solid var(--line); color: var(--body); padding: .5rem .7rem; border-radius: 4px; cursor: pointer; font-size: .8rem; }
.theme-button:hover { border-color: var(--accent); }
.theme-symbol { display: block; width: .85rem; height: .85rem; border: 1px solid currentColor; border-radius: 50%; background: linear-gradient(90deg, currentColor 50%, transparent 50%); }
.hero { padding-block: 5.4rem 4.5rem; display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: 3rem; }
.hero .eyebrow { font-size: .75rem; letter-spacing: .1em; }
.hero .eyebrow::before { background: linear-gradient(90deg, var(--cyan), #1742f5, var(--violet)); }
.hero h1 { font-size: clamp(3.1rem, 5.7vw, 5rem); font-weight: 800; line-height: 1.02; }
.hero h1 span { color: var(--accent); }
.hero-copy { font-size: 1.2rem; line-height: 1.6; margin-top: 1.7rem; max-width: 37rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1.6rem; align-items: center; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 1rem; background: #1742f5; color: #fff; text-decoration: none; font-weight: 600; padding: .85rem 1.25rem; border: 1px solid #1742f5; border-radius: 2px; }
.button:hover { background: #070d63; border-color: #070d63; }
.signature { min-width: 0; padding-block: 2.5rem; position: relative; }
.signature-grid { display: flex; align-items: center; justify-content: center; gap: 1.5rem; min-height: 18rem; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 3.5rem 3.5rem; }
.signature-letters { font-size: clamp(7rem, 15vw, 13rem); font-weight: 800; letter-spacing: -.16em; line-height: 1; color: var(--navy); padding-right: .14em; }
.signature-letters span { color: #1742f5; }
[data-theme='dark'] .signature-letters { color: var(--ink); }
[data-theme='dark'] .signature-letters span { color: var(--accent); }
.signature-labels { display: grid; gap: 1.5rem; font-size: .75rem; }
.signature-labels span { display: flex; align-items: center; gap: .5rem; }
.signature-labels span::before { content: ''; width: 1.4rem; height: 1px; background: var(--cyan); }
.signature-caption { font: .7rem/1.5 'JetBrains Mono', monospace; text-align: center; letter-spacing: .16em; margin-top: 1.6rem; text-transform: uppercase; color: var(--muted); }
.expertise-band { background: var(--surface); border-block: 1px solid var(--line); }
.expertise { display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 1.5rem; }
.expertise-item { display: flex; align-items: center; gap: 1rem; padding-inline: 1.5rem; border-right: 1px solid var(--line); }
.expertise-item:first-child { padding-left: 0; }
.expertise-item:last-child { padding-right: 0; border: 0; }
.expertise-item svg { width: 1.65rem; height: 1.65rem; color: var(--accent); flex-shrink: 0; }
.expertise-item h2 { font-size: 1.05rem; letter-spacing: -.01em; line-height: 1.4; }
.expertise-item p { font-size: .9rem; }
.feature { display: grid; grid-template-columns: .9fr 1.1fr; gap: 3.5rem; align-items: center; padding-bottom: 2.5rem; }
.project-label { font: .75rem/1.6 'JetBrains Mono', monospace; letter-spacing: .07em; text-transform: uppercase; color: var(--navy); margin-bottom: .9rem; }
[data-theme='dark'] .project-label { color: var(--accent); }
.feature h3 { font-size: clamp(2rem, 3.5vw, 2.8rem); }
.feature p { margin-top: 1rem; }
.project-facts { display: grid; grid-template-columns: 1fr 1fr; margin: 1.6rem 0 1rem; gap: 1rem; }
.project-facts div + div { border-left: 1px solid var(--line); padding-left: 1rem; }
.project-facts dt { color: var(--ink); font-size: .9rem; font-weight: 700; }
.project-facts dd { margin: .3rem 0 0; font-size: .875rem; }
.lifecycle { padding: 2rem; background: var(--diagram); border: 1px solid var(--line); margin: 0; }
.lifecycle figcaption { color: var(--navy); font-size: 1.125rem; font-weight: 700; }
[data-theme='dark'] .lifecycle figcaption { color: var(--ink); }
.lifecycle ol { list-style: none; padding: 0; margin: 2.3rem 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.lifecycle li { position: relative; text-align: center; font-size: .8rem; }
.lifecycle li:not(:last-child)::after { content: '→'; position: absolute; right: -.8rem; top: .55rem; color: var(--accent); font-size: 1.3rem; }
.step-number { width: 2.9rem; height: 2.9rem; border-radius: 50%; display: grid; place-items: center; margin: 0 auto .8rem; background: var(--card); color: var(--accent); font: 500 .9rem 'JetBrains Mono', monospace; }
.lifecycle strong { display: block; color: var(--ink); font-size: .9rem; margin-bottom: .35rem; }
.lifecycle-note { border-top: 1px solid var(--line); padding-top: 1.2rem; color: var(--accent); font-size: .9rem; }
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.project-card { padding: 2rem; background: var(--card); border: 1px solid var(--line); }
.project-card h3 { margin-bottom: .8rem; max-width: 22rem; }
.project-card .text-link { margin-top: 1rem; }
.mini-flow { display: flex; align-items: center; flex-wrap: wrap; gap: .6rem; margin-bottom: 1.6rem; padding-bottom: 1.4rem; border-bottom: 1px solid var(--line); font: .75rem/1.5 'JetBrains Mono', monospace; color: var(--accent); }
.mini-flow span:nth-child(odd) { background: var(--surface); border: 1px solid var(--line); padding: .45rem .6rem; }
.agentic-band { background: var(--surface); border-top: 1px solid var(--line); }
.agentic-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 4rem; align-items: center; }
.agentic-subtitle { color: var(--accent); font-size: clamp(1.5rem, 2.8vw, 2.1rem); font-weight: 600; letter-spacing: -.025em; margin-top: .5rem; }
.agentic-copy > p:not(.agentic-subtitle) { margin-top: 1.2rem; }
.agentic-links { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 1.4rem; margin-top: 1.8rem; }
.agentic-definition { min-width: 0; background: var(--card); border: 1px solid var(--line); border-top: 3px solid var(--accent); padding: 2rem; }
.agentic-definition h3 { font: 500 .8rem/1.6 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.agentic-equation { display: flex; flex-wrap: wrap; align-items: baseline; gap: .7rem; color: var(--accent); font-size: clamp(2rem, 3.7vw, 3rem); font-weight: 800; letter-spacing: -.04em; margin-top: .8rem; line-height: 1.2; }
.agentic-equation span { white-space: nowrap; }
.agentic-equation .agentic-equals { font-size: 1.6rem; font-weight: 400; color: var(--muted); }
.agentic-clarifier { font-size: .9rem; color: var(--muted); }
.agentic-metrics { margin: 1.5rem 0 0; }
.agentic-metrics div { padding-block: .8rem; border-top: 1px solid var(--line); }
.agentic-metrics dt { font-weight: 700; color: var(--ink); }
.agentic-metrics dd { margin: .2rem 0 0; font-size: .9rem; }
.agentic-example { padding-top: .8rem; border-top: 1px solid var(--line); font-size: .9rem; }
@media (max-width: 800px) {
  .agentic-grid { grid-template-columns: 1fr; gap: 2rem; }
  .agentic-definition { padding: 1.5rem; }
}
.accent-text { color: var(--accent); }
.paper-meta { color: var(--muted); font-size: .875rem; margin-top: 1rem; }
.definition-panel { padding: 1.5rem; margin-bottom: 1.5rem; border-left: 3px solid var(--accent); background: var(--diagram); }
.definition-panel .agentic-equation { font-size: clamp(1.6rem, 3vw, 2.5rem); margin-top: 0; }
.definition-panel .agentic-equation span { white-space: normal; }
.formula-line { font-family: 'JetBrains Mono', monospace; font-size: 1rem !important; padding: 1rem 1.2rem; color: var(--accent); background: var(--surface); overflow-wrap: anywhere; }
.table-scroll { overflow-x: auto; margin-block: 1.5rem; }
.framework-table { width: 100%; min-width: 36rem; border-collapse: collapse; text-align: left; font-size: .95rem; }
.framework-table caption { text-align: left; color: var(--muted); margin-bottom: .8rem; font-size: .875rem; }
.framework-table th, .framework-table td { padding: 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.framework-table thead { background: var(--surface); color: var(--ink); }
.framework-table tbody th { color: var(--ink); width: 28%; }
.worked-results { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-block: 1.5rem; }
.worked-results > div { padding: 1.3rem; background: var(--surface); border-top: 2px solid var(--accent); }
.worked-results dt { color: var(--body); font-size: .9rem; }
.worked-results dd { margin: .6rem 0 0; }
.worked-results strong { display: block; font-size: 1.6rem; color: var(--accent); }
.worked-results span { display: block; font-family: 'JetBrains Mono', monospace; font-size: .85rem; margin-top: .5rem; }
.reference-list > div { display: grid; grid-template-columns: 1fr 1.5fr; gap: 1rem; border-top: 1px solid var(--line); padding-block: 1rem; }
.reference-list dt { color: var(--ink); font-weight: 600; }
.reference-list dd { margin: 0; }
.paper-panel { background: var(--surface); padding: 2rem; }
.paper-panel .paper-meta { font-size: .875rem; }
.main-nav [aria-current='page'] { color: var(--accent); text-decoration: underline; }
@media (max-width: 480px) {
  .worked-results { grid-template-columns: 1fr; }
  .reference-list > div { grid-template-columns: 1fr; gap: .3rem; }
  .paper-panel { padding: 1.25rem; }
}
.principles-band { background: #070d63; color: #d6ddff; }
.principles-band .eyebrow { color: #d6ddff; }
.principles-band .eyebrow::before { background: var(--cyan); }
.principles-grid { display: grid; grid-template-columns: 1.15fr 2fr; gap: 4rem; }
.principles-band h2 { color: #fff; font-size: clamp(2rem, 3.3vw, 2.8rem); }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; list-style: none; padding: 0; margin: 0; }
.principles li { padding-left: 1.4rem; border-left: 1px solid #353b80; }
.principles .number { display: block; font: 1.2rem 'JetBrains Mono', monospace; color: #08e9eb; margin-bottom: 1rem; }
.principles h3 { color: #fff; font-size: 1.15rem; line-height: 1.25; margin-bottom: .9rem; }
.principles p { font-size: .9rem; }
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 5rem; }
.about-copy h2 { margin-bottom: 1.5rem; }
.about-copy > p { font-size: 1.1rem; }
.about-copy .text-link { margin-top: 1rem; }
.career { list-style: none; padding: 0; margin: 0; }
.career li { padding-block: 1.4rem; border-top: 1px solid var(--line); }
.career h3 { font-size: 1.1rem; margin: .4rem 0 .7rem; }
.career p { font-size: .95rem; }
.career-label { font: .75rem 'JetBrains Mono', monospace; color: var(--accent); text-transform: uppercase; letter-spacing: .06em; }
.toolbox { margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.toolbox > h3 { font-size: 1.2rem; }
.toolbox-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin: 1.5rem 0 0; }
.toolbox dt { color: var(--ink); font-weight: 700; font-size: .95rem; }
.toolbox dd { margin: .6rem 0 0; font-size: .95rem; }
.products { margin-top: 1.6rem; font-size: .9rem; color: var(--muted); }
.lab-band { background: var(--surface); }
.lab-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
.lab-grid h2 { margin-bottom: 1.2rem; }
.lab-list { display: grid; gap: .9rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.lab-list strong { color: var(--ink); }
.lab-image { margin: 0; }
.lab-image img { aspect-ratio: 3/2; width: 100%; object-fit: cover; }
.lab-image figcaption { margin-top: .6rem; font-size: .75rem; color: var(--muted); }
.notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.notes-grid > div:last-child { border-left: 1px solid var(--line); padding-left: 3rem; }
.notes-grid h3 { font-size: 1.4rem; margin-bottom: 1rem; }
.contact { border-top: 1px solid var(--line); padding-block: 3.5rem 2rem; }
.contact-main { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.contact h2 { font-size: clamp(2rem, 3.5vw, 3rem); }
.contact p { margin-top: .8rem; max-width: 35rem; }
.social-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 1.5rem; margin-top: 2.7rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; font-size: .85rem; color: var(--muted); }
.article-header { padding-block: 3rem 3.5rem; }
.breadcrumb { font-size: .9rem; color: var(--accent); display: inline-block; margin-bottom: 2.5rem; }
.article-header h1 { font-size: clamp(2.7rem, 5.5vw, 4.7rem); max-width: 56rem; }
.article-lede { font-size: 1.3rem; margin-top: 1.5rem; max-width: 48rem; }
.article-meta { margin: 2rem 0 0; display: flex; flex-wrap: wrap; gap: 1rem 3rem; }
.article-meta dt { font: .75rem 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.article-meta dd { margin: .4rem 0 0; color: var(--ink); }
.article-layout { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 5rem; padding-block: 3rem 5rem; border-top: 1px solid var(--line); }
.article-nav { align-self: start; position: sticky; top: 7rem; }
.article-nav p { font-weight: 700; color: var(--ink); margin-bottom: .8rem; }
.article-nav a { display: block; color: var(--muted); font-size: .9rem; padding: .5rem 0; text-decoration: none; }
.article-nav a:hover { color: var(--accent); }
.article-body { min-width: 0; max-width: 48rem; }
.article-body section + section { margin-top: 3rem; }
.article-body h2 { font-size: 2rem; margin-bottom: 1.2rem; }
.article-body h3 { font-size: 1.2rem; margin: 1.6rem 0 .7rem; }
.article-body p, .article-body li { font-size: 1.1rem; }
.article-body ul, .article-body ol { padding-left: 1.4rem; }
.article-body li + li { margin-top: .8rem; }
.article-body .lifecycle { margin-top: 2rem; }
.article-body .lifecycle li { font-size: .8rem; }
.article-body .lifecycle li + li { margin-top: 0; }
.article-body .lifecycle ol { padding: 0; }
.takeaway { padding: 1.5rem 2rem; border-left: 3px solid var(--accent); background: var(--surface); }
.takeaway strong { color: var(--ink); }
.article-next { padding-top: 2rem; margin-top: 3rem; border-top: 1px solid var(--line); }
@media (max-width: 1050px) {
  .wrap { padding-inline: 2rem; }
  .header-inner { gap: 1rem; }
  .main-nav { gap: 1rem; }
  .header-contact { display: none; }
  .hero { gap: 2rem; }
  .signature-labels { display: none; }
  .principles-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-grid, .feature, .lab-grid { gap: 2.5rem; }
  .article-layout { grid-template-columns: 12rem minmax(0, 1fr); gap: 2.5rem; }
}
@media (max-width: 720px) {
  html { scroll-padding-top: 9rem; }
  .wrap { padding-inline: 1.5rem; }
  .section { padding-block: 3.5rem; }
  .header-inner { flex-wrap: wrap; gap: .3rem 1rem; padding-top: .8rem; padding-bottom: .4rem; }
  .brand { order: 0; }
  .header-actions { order: 1; margin-left: auto; }
  .main-nav { order: 2; width: 100%; justify-content: space-between; gap: .5rem; }
  .main-nav a { font-size: .875rem; padding: .6rem .15rem; }
  .hero { grid-template-columns: 1fr; padding-block: 3rem; gap: 1.5rem; }
  .hero h1 { font-size: clamp(2.7rem, 9vw, 4.4rem); }
  .hero-copy { font-size: 1.1rem; }
  .signature { padding-block: 1rem 0; }
  .signature-grid { min-height: 10rem; gap: 2rem; }
  .signature-letters { font-size: clamp(7rem, 24vw, 9rem); }
  .signature-labels { display: grid; gap: 1rem; }
  .signature-caption { margin-top: 1rem; }
  .expertise { grid-template-columns: 1fr; padding-block: .3rem; }
  .expertise-item, .expertise-item:first-child, .expertise-item:last-child { padding: 1rem 0; border: 0; }
  .expertise-item + .expertise-item { border-top: 1px solid var(--line); }
  .feature, .project-grid, .about-grid, .lab-grid, .notes-grid { grid-template-columns: 1fr; gap: 2rem; }
  .project-grid { gap: 1rem; }
  .project-card { padding: 1.5rem; }
  .lifecycle { padding: 1.3rem; }
  .lifecycle ol { gap: .7rem; }
  .lifecycle li { font-size: .75rem; }
  .lifecycle li:not(:last-child)::after { right: -.7rem; }
  .lifecycle strong { font-size: .8rem; }
  .principles { grid-template-columns: 1fr; gap: 1.8rem; }
  .principles li { padding-left: 1.2rem; }
  .principles .number { margin-bottom: .6rem; }
  .toolbox-grid { grid-template-columns: 1fr; gap: 1.3rem; }
  .notes-grid > div:last-child { border-left: 0; border-top: 1px solid var(--line); padding: 2rem 0 0; }
  .article-layout { grid-template-columns: 1fr; gap: 2rem; padding-block: 2rem 3rem; }
  .article-nav { position: static; border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; }
  .article-nav a { display: inline-block; margin-right: 1rem; }
  .article-lede { font-size: 1.125rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  .site-header, .skip-link, .article-nav, .hero-actions, .theme-button { display: none !important; }
  .wrap { max-width: none; padding-inline: 0; }
  .section { padding-block: 1.5rem; }
  .article-layout { display: block; }
  .principles-band { background: #fff; color: #000; }
  .principles-band h2, .principles-band h3, .principles-band .eyebrow { color: #000; }
  a { text-decoration: underline; }
}