:root {
  color-scheme: light;
  --ink: #14221f;
  --muted: #64736e;
  --paper: #f5f7f4;
  --surface: #ffffff;
  --line: #d9e1dc;
  --accent: #0b765e;
  --accent-soft: #e2f1eb;
  --orange: #b35b2e;
  --navy: #142d3b;
  --shadow: 0 16px 50px rgba(20, 45, 59, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
.topbar { min-height: 68px; padding: 0 clamp(20px, 6vw, 88px); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(245,247,244,.94); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(12px); }
.brand { color: var(--navy); font-size: 13px; font-weight: 850; letter-spacing: .08em; text-decoration: none; }
nav { display: flex; align-items: center; gap: clamp(14px, 3vw, 30px); }
nav a { color: var(--muted); font-size: 13px; text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
main { max-width: 1240px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 64px) 90px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); gap: clamp(34px, 7vw, 100px); align-items: center; padding: clamp(64px, 9vw, 120px) 0 72px; border-bottom: 1px solid var(--line); }
.hero-copy { max-width: 700px; }
.eyebrow { margin: 0 0 18px; color: var(--accent); font-size: 11px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 720px; margin-bottom: 24px; color: var(--navy); font-size: clamp(42px, 6vw, 80px); line-height: .98; letter-spacing: -.035em; font-weight: 760; }
.hero-copy > p:not(.eyebrow) { max-width: 680px; margin-bottom: 28px; color: #41524c; font-size: clamp(17px, 2vw, 21px); line-height: 1.6; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-meta a, .hero-meta span { display: inline-flex; align-items: center; min-height: 34px; padding: 7px 11px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 12px; text-decoration: none; }
.hero-meta a:hover { border-color: var(--accent); color: var(--accent); }
.hero-visual { min-height: 340px; position: relative; overflow: hidden; border: 1px solid #c9d8d0; background: var(--navy); box-shadow: var(--shadow); }
.hero-visual img { width: 100%; height: 100%; min-height: 340px; display: block; object-fit: cover; object-position: center; opacity: .76; }
.hero-visual::after { content: "SYSTEM VIEW"; position: absolute; left: 18px; bottom: 16px; padding: 6px 8px; background: rgba(20,45,59,.88); color: #d8f2e9; font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.proofs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0 0 86px; border: 1px solid var(--line); background: var(--surface); }
.proof { min-height: 118px; padding: 22px 24px; border-right: 1px solid var(--line); }
.proof:last-child { border-right: 0; }
.proof strong { display: block; margin-bottom: 8px; color: var(--navy); font-size: 14px; }
.proof span { display: block; color: var(--muted); font-size: 13px; line-height: 1.5; }
.section { padding: 0 0 92px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
.section-heading h2 { max-width: 760px; margin-bottom: 0; color: var(--navy); font-size: clamp(28px, 4vw, 48px); line-height: 1.08; letter-spacing: -.025em; }
.section-note { max-width: 260px; margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.flagship { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr); gap: 0; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.flagship-copy { padding: clamp(26px, 4vw, 46px); }
.flagship-copy h3 { margin-bottom: 14px; color: var(--navy); font-size: clamp(25px, 3vw, 37px); line-height: 1.08; }
.flagship-copy > p { max-width: 640px; color: #41524c; font-size: 15px; line-height: 1.65; }
.label { margin: 0 0 11px; color: var(--orange); font-size: 10px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.contribution { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 28px; }
.contribution div { padding-top: 14px; border-top: 1px solid var(--line); }
.contribution strong { display: block; margin-bottom: 5px; color: var(--navy); font-size: 12px; }
.contribution span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.architecture { padding: clamp(24px, 4vw, 42px); border-left: 1px solid var(--line); background: #f0f6f2; }
.architecture h4 { margin: 0 0 18px; color: var(--navy); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.flow { display: grid; gap: 9px; }
.flow-step { position: relative; padding: 13px 14px; border: 1px solid #c7d8cf; background: var(--surface); color: var(--navy); font-size: 13px; font-weight: 750; }
.flow-step:not(:last-child)::after { content: "↓"; position: absolute; bottom: -17px; left: 50%; color: var(--accent); font-size: 14px; font-weight: 800; z-index: 1; }
.flow-step small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 500; }
.evidence-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; }
.evidence, .limits { border: 1px solid var(--line); background: var(--surface); }
.evidence h3, .limits h3 { margin: 0; padding: 21px 24px; border-bottom: 1px solid var(--line); color: var(--navy); font-size: 17px; }
.evidence table { width: 100%; border-collapse: collapse; font-size: 13px; }
.evidence th, .evidence td { padding: 15px 20px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.evidence th { color: var(--muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.evidence td:last-child { color: var(--orange); font-weight: 700; }
.limits ul { margin: 0; padding: 22px 25px 25px 43px; color: #41524c; font-size: 13px; line-height: 1.7; }
.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.work-card { display: flex; min-height: 220px; flex-direction: column; padding: 25px; border: 1px solid var(--line); background: var(--surface); text-decoration: none; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.work-card:hover { border-color: #9dc7b6; box-shadow: var(--shadow); transform: translateY(-2px); }
.work-card .number { color: var(--orange); font-size: 11px; font-weight: 850; letter-spacing: .12em; }
.work-card h3 { margin: 16px 0 10px; color: var(--navy); font-size: 22px; }
.work-card p { margin-bottom: 20px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: auto; }
.tags span { padding: 5px 7px; background: var(--accent-soft); color: #1a664f; font-size: 10px; font-weight: 700; }
.closing { display: flex; justify-content: space-between; align-items: center; gap: 30px; padding: 32px 0 0; border-top: 1px solid var(--line); }
.closing h2 { margin: 0; color: var(--navy); font-size: 24px; }
.closing div { display: flex; gap: 18px; }
.closing a { padding: 10px 0; color: var(--accent); font-size: 13px; font-weight: 750; text-decoration: none; border-bottom: 1px solid currentColor; }
footer { max-width: 1240px; margin: 0 auto; padding: 24px clamp(20px, 5vw, 64px) 40px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }

/* Agent portfolio: organized around the problems solved, not generic role keywords. */
.agent-page main { max-width: 1320px; }
.agent-hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: clamp(40px, 7vw, 96px); align-items: center; padding: clamp(58px, 7vw, 88px) 0 62px; }
.agent-hero-copy h1 { max-width: 800px; margin: 0 0 26px; font-size: clamp(38px, 4.5vw, 60px); line-height: 1.1; }
.agent-lead { max-width: 760px; margin-bottom: 30px; color: #40504b; font-size: clamp(16px, 1.65vw, 20px); line-height: 1.72; }
.portfolio-index { border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.portfolio-index > p { margin: 0; padding: 16px 20px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.portfolio-index a { display: grid; grid-template-columns: 34px 1fr; column-gap: 10px; padding: 19px 20px; border-bottom: 1px solid var(--line); text-decoration: none; }
.portfolio-index a:last-child { border-bottom: 0; }
.portfolio-index a:hover { background: #edf4f0; }
.portfolio-index span { grid-row: 1 / span 2; color: var(--orange); font-size: 11px; font-weight: 850; }
.portfolio-index strong { color: var(--navy); font-size: 14px; line-height: 1.45; }
.portfolio-index small { margin-top: 5px; color: var(--muted); font-size: 11px; }
.agent-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 104px; border: 1px solid var(--line); background: var(--surface); }
.agent-summary div { min-height: 108px; padding: 22px 25px; border-right: 1px solid var(--line); }
.agent-summary div:last-child { border-right: 0; }
.agent-summary strong { display: block; margin-bottom: 7px; color: var(--navy); font-size: 20px; }
.agent-summary span { color: var(--muted); font-size: 13px; line-height: 1.5; }
.problem-section { padding: 0 0 112px; scroll-margin-top: 96px; }
.problem-heading { display: grid; grid-template-columns: 76px minmax(0, 850px); gap: 24px; margin-bottom: 32px; }
.problem-number { padding-top: 3px; color: var(--orange); font-size: 14px; font-weight: 850; letter-spacing: .08em; }
.problem-heading h2 { margin-bottom: 17px; color: var(--navy); font-size: clamp(31px, 4vw, 51px); line-height: 1.12; letter-spacing: -.025em; }
.problem-heading > div:last-child > p:last-child { max-width: 770px; margin-bottom: 0; color: var(--muted); font-size: 15px; line-height: 1.65; }
.case-study { display: grid; grid-template-columns: minmax(0, 1fr) 310px; border: 1px solid var(--line); background: var(--surface); box-shadow: 0 18px 52px rgba(20,45,59,.06); }
.case-main { padding: clamp(28px, 4.5vw, 54px); }
.case-kicker { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 14px; margin-bottom: 24px; }
.case-kicker span { color: var(--orange); font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.case-kicker strong { color: var(--navy); font-size: 14px; }
.case-kicker em { padding: 4px 7px; background: #eef2ef; color: var(--muted); font-size: 10px; font-style: normal; }
.case-main > h3 { max-width: 790px; margin-bottom: 16px; color: var(--navy); font-size: clamp(24px, 3.1vw, 38px); line-height: 1.15; letter-spacing: -.02em; }
.case-main > p { max-width: 790px; margin-bottom: 30px; color: #43524d; font-size: 15px; line-height: 1.75; }
.decision-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 26px; }
.decision-grid > div { padding-top: 15px; border-top: 1px solid var(--line); }
.decision-grid strong { display: block; margin-bottom: 7px; color: var(--navy); font-size: 13px; }
.decision-grid p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.case-evidence { padding: 30px 26px; border-left: 1px solid var(--line); background: #edf4f0; }
.case-evidence > p { margin-bottom: 24px; color: var(--accent); font-size: 10px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.case-evidence dl { margin: 0 0 22px; }
.case-evidence dl div { padding: 0 0 18px; margin-bottom: 18px; border-bottom: 1px solid #cddbd4; }
.case-evidence dt { margin-bottom: 4px; color: var(--navy); font-size: 22px; font-weight: 780; letter-spacing: -.02em; }
.case-evidence dd { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.case-evidence small { display: block; color: #66736d; font-size: 10px; line-height: 1.65; }
.case-study-dark { background: var(--navy); }
.case-study-dark .case-kicker strong, .case-study-dark .case-main > h3, .case-study-dark .decision-grid strong { color: #eef5f1; }
.case-study-dark .case-kicker em { background: rgba(255,255,255,.08); color: #b9cac2; }
.case-study-dark .case-main > p, .case-study-dark .decision-grid p { color: #bdcbc5; }
.case-study-dark .decision-grid > div { border-color: rgba(255,255,255,.16); }
.workflow-line { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin: 0 0 28px; }
.workflow-line span { padding: 7px 9px; border: 1px solid rgba(255,255,255,.22); color: #e1ede7; font-size: 11px; }
.workflow-line i { color: #65bc99; font-size: 11px; font-style: normal; }
.case-links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 30px; }
.case-links a { padding-bottom: 5px; border-bottom: 1px solid currentColor; color: #8fd6b8; font-size: 12px; font-weight: 750; text-decoration: none; }
.technical-section { padding: 0 0 112px; }
.technical-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.technical-grid article { min-height: 205px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.technical-grid span { color: var(--orange); font-size: 10px; font-weight: 850; }
.technical-grid h3 { margin: 35px 0 10px; color: var(--navy); font-size: 19px; }
.technical-grid p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.code-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(35px, 7vw, 90px); padding: 52px; margin-bottom: 100px; background: #e9efeb; }
.code-section h2 { margin-bottom: 14px; color: var(--navy); font-size: clamp(28px, 3.4vw, 44px); }
.code-section > div:first-child > p:last-child { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.code-links { border-top: 1px solid #c8d3cd; }
.code-links a { display: grid; grid-template-columns: minmax(135px,.7fr) 1.3fr; gap: 18px; padding: 17px 2px; border-bottom: 1px solid #c8d3cd; text-decoration: none; }
.code-links a:hover strong { color: var(--accent); }
.code-links strong { color: var(--navy); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.code-links span { color: var(--muted); font-size: 12px; }

@media (max-width: 820px) {
  .topbar { align-items: flex-start; flex-direction: column; gap: 11px; padding-top: 16px; padding-bottom: 15px; }
  .hero { grid-template-columns: 1fr; padding-top: 62px; }
  .hero-visual { min-height: 260px; }
  .hero-visual img { min-height: 260px; }
  .proofs, .flagship, .evidence-grid { grid-template-columns: 1fr; }
  .proof { border-right: 0; border-bottom: 1px solid var(--line); }
  .proof:last-child { border-bottom: 0; }
  .architecture { border-top: 1px solid var(--line); border-left: 0; }
  .section-heading, .closing { align-items: flex-start; flex-direction: column; }
  .section-note { max-width: 520px; }
  .agent-hero, .case-study, .code-section { grid-template-columns: 1fr; }
  .portfolio-index { max-width: 620px; }
  .agent-summary { margin-bottom: 82px; }
  .case-evidence { border-top: 1px solid var(--line); border-left: 0; }
  .case-evidence dl { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; }
  .technical-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .code-section { padding: 34px; }
}
@media (max-width: 560px) {
  nav { width: 100%; justify-content: space-between; gap: 9px; }
  nav a { font-size: 12px; }
  main { padding-bottom: 68px; }
  .hero { padding-top: 54px; padding-bottom: 52px; }
  h1 { font-size: 43px; }
  .contribution, .work-grid { grid-template-columns: 1fr; }
  .evidence { overflow-x: auto; }
  .evidence table { min-width: 510px; }
  .closing div { flex-wrap: wrap; }
  footer { align-items: flex-start; flex-direction: column; gap: 8px; }
  .agent-hero { padding-top: 54px; }
  .agent-hero-copy h1 { font-size: 40px; }
  .agent-summary { grid-template-columns: 1fr; }
  .agent-summary div { border-right: 0; border-bottom: 1px solid var(--line); }
  .agent-summary div:last-child { border-bottom: 0; }
  .problem-heading { grid-template-columns: 1fr; gap: 8px; }
  .problem-heading h2 { font-size: 32px; }
  .decision-grid, .technical-grid { grid-template-columns: 1fr; }
  .case-evidence dl { grid-template-columns: 1fr 1fr; }
  .workflow-line i { display: none; }
  .code-section { padding: 27px 22px; }
  .code-links a { grid-template-columns: 1fr; gap: 5px; }
}