:root {
  --blue: #1f5493;
  --blue-dark: #12365f;
  --blue-soft: #e9eef6;
  --cyan: #82d8e3;
  --ink: #17202b;
  --muted: #5f6c7b;
  --line: #d9e0e8;
  --white: #fff;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 100; padding: 10px 14px; background: var(--white); color: var(--blue); }
.skip-link:focus { top: 12px; }
.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; }
.site-header { position: fixed; z-index: 50; top: 0; left: 0; right: 0; height: 72px; display: flex; align-items: center; justify-content: space-between; padding: 0 max(24px, calc((100vw - var(--max)) / 2)); color: var(--white); border-bottom: 1px solid rgba(255,255,255,.18); transition: background .25s, color .25s, box-shadow .25s; }
.site-header.scrolled { color: var(--ink); background: rgba(255,255,255,.96); box-shadow: 0 8px 28px rgba(18,54,95,.09); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 31px; height: 31px; color: var(--blue); background: var(--white); border: 1px solid currentColor; font-family: Georgia, serif; font-size: 20px; }
.scrolled .brand-mark { color: var(--white); background: var(--blue); }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 650; }
.site-nav a { text-decoration: none; }
.site-nav a:not(.nav-cta):hover { text-decoration: underline; text-underline-offset: 5px; }
.nav-cta { padding: 9px 14px; border: 1px solid currentColor; }
.nav-toggle { display: none; width: 42px; height: 42px; color: inherit; background: transparent; border: 0; }
.nav-toggle-lines, .nav-toggle-lines::before, .nav-toggle-lines::after { display: block; width: 23px; height: 2px; background: currentColor; content: ""; transition: transform .2s; }
.nav-toggle-lines::before { transform: translateY(-7px); }.nav-toggle-lines::after { transform: translateY(5px); }
.hero { position: relative; min-height: min(820px, 94vh); display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, 520px); align-items: center; gap: 70px; padding: 120px max(24px, calc((100vw - var(--max)) / 2)) 84px; overflow: hidden; color: var(--white); background: var(--blue); }
.hero::after { position: absolute; content: ""; width: 520px; height: 520px; right: -200px; bottom: -280px; border: 90px solid rgba(130,216,227,.18); border-radius: 50%; }
.hero-grid { position: absolute; inset: 0; opacity: .12; background-image: linear-gradient(rgba(255,255,255,.5) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.5) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg, #000, transparent 72%); }
.hero-content, .contract-window { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 20px; color: var(--blue); font-size: 12px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.hero .eyebrow, .standard-section .eyebrow { color: var(--cyan); }
h1, h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-weight: 500; line-height: 1.02; }
h1 { max-width: 750px; font-size: clamp(48px, 6.5vw, 84px); }
h2 { font-size: clamp(38px, 5vw, 64px); }
h3 { margin: 0; line-height: 1.2; }
.hero-lead { max-width: 680px; margin: 30px 0 0; color: #e4edf7; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid transparent; font-size: 14px; font-weight: 750; text-decoration: none; transition: transform .18s, background .18s; }
.button:hover { transform: translateY(-2px); }.button.primary { color: var(--blue-dark); background: var(--white); }.button.secondary { color: var(--white); border-color: rgba(255,255,255,.65); }
.contract-window { overflow: hidden; border: 1px solid rgba(255,255,255,.35); background: #112b49; box-shadow: 24px 28px 0 rgba(9,34,62,.18); }
.window-bar { height: 46px; display: flex; align-items: center; gap: 7px; padding: 0 16px; color: #b8c7d9; background: #0b223c; font: 12px ui-monospace, monospace; }
.window-bar span { width: 8px; height: 8px; border: 1px solid #7990aa; border-radius: 50%; }.window-bar b { margin-left: 8px; font-weight: 500; }
pre { margin: 0; padding: 28px 30px 32px; overflow-x: auto; font: 14px/1.72 "SFMono-Regular", Consolas, monospace; }code { color: #d8e4f0; }.code-key { color: #88d7e2; }.code-path { color: #f5ce85; }.code-comment { color: #7f98b3; }
.hero-next { position: absolute; z-index: 2; left: max(24px, calc((100vw - var(--max)) / 2)); bottom: 25px; color: #dbe7f3; font-size: 12px; font-weight: 700; text-decoration: none; text-transform: uppercase; }.hero-next span { padding-left: 10px; font-size: 17px; }
.section { padding: 110px max(24px, calc((100vw - var(--max)) / 2)); scroll-margin-top: 72px; }
.section-heading { max-width: 820px; }.section-heading > p:last-child { max-width: 720px; margin: 26px 0 0; color: var(--muted); font-size: 18px; }
.friction-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 68px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.friction-grid article { min-height: 245px; padding: 27px 25px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.friction-grid span { color: var(--blue); font: 700 12px ui-monospace, monospace; }.friction-grid h3 { margin-top: 48px; font-size: 19px; }.friction-grid p { color: var(--muted); font-size: 14px; }
.standard-section { color: var(--white); background: var(--blue-dark); }.section-heading.light > p:last-child { color: #c7d4e1; }
.standard-layout { display: grid; grid-template-columns: 42% 1fr; gap: 64px; margin-top: 65px; }
.policy-list { border-top: 1px solid #49647e; }.policy { width: 100%; display: flex; flex-direction: column; gap: 5px; padding: 19px 10px; color: #aebdcb; text-align: left; background: transparent; border: 0; border-bottom: 1px solid #49647e; cursor: pointer; }.policy span { font-size: 18px; font-weight: 700; }.policy b { font-size: 12px; font-weight: 500; }.policy.active { padding-left: 22px; color: var(--white); border-left: 3px solid var(--cyan); background: rgba(255,255,255,.06); }
.policy-detail { align-self: center; min-height: 270px; padding: 36px; border: 1px solid #49647e; background: #173f69; }.detail-label { color: var(--cyan); font-size: 11px; font-weight: 800; letter-spacing: .14em; }.policy-detail h3 { max-width: 480px; font-family: Georgia, serif; font-size: 34px; font-weight: 500; }.policy-detail > p:not(.detail-label) { max-width: 560px; color: #d4e0eb; }.translation { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 35px; color: #dbe9f5; font-size: 12px; font-weight: 700; }.translation i { color: var(--cyan); font-size: 20px; font-style: normal; }
.principles { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 72px; border-top: 1px solid #49647e; }.principles div { display: flex; flex-direction: column; gap: 8px; padding: 25px 22px 0 0; }.principles strong { color: var(--cyan); }.principles span { color: #b7c5d2; font-size: 13px; }
.examples-link { display: inline-flex; align-items: center; gap: 14px; margin-top: 48px; color: var(--white); font-size: 14px; font-weight: 750; text-underline-offset: 5px; }.examples-link span { color: var(--cyan); font-size: 20px; }
.cycle-section { background: var(--blue-soft); }.timeline { display: grid; grid-template-columns: repeat(5, 1fr); padding: 0; margin: 70px 0 0; list-style: none; }.timeline li { position: relative; padding-right: 25px; }.timeline li::before { position: absolute; content: ""; top: 17px; left: 38px; right: 0; height: 1px; background: #9eb2c9; }.timeline span { position: relative; z-index: 1; display: grid; width: 35px; height: 35px; place-items: center; color: var(--white); background: var(--blue); font-size: 12px; font-weight: 800; }.timeline h3 { margin-top: 28px; font-size: 19px; }.timeline p { color: var(--muted); font-size: 14px; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 80px; }.split-heading > p { color: var(--muted); font-size: 17px; }
.oas-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; gap: 18px; margin-top: 60px; }.oas-chain div { display: flex; min-height: 170px; flex-direction: column; justify-content: flex-end; padding: 22px; border: 1px solid var(--line); background: #f7f9fb; }.oas-chain small { margin-bottom: auto; color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .12em; }.oas-chain strong { font-size: 17px; }.oas-chain span { color: var(--muted); font-size: 13px; }.oas-chain i { align-self: center; color: var(--blue); font-size: 24px; font-style: normal; }
.responsibilities { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 35px; }.responsibilities article { padding: 24px; border-left: 2px solid var(--blue-soft); }.responsibilities small { color: var(--blue); font-weight: 800; }.responsibilities h3 { margin-top: 20px; }.responsibilities p { color: var(--muted); font-size: 14px; }
.adoption-section { display: grid; grid-template-columns: 1fr 1fr; gap: 25px 80px; color: var(--white); background: var(--blue); }.adoption-copy p:not(.eyebrow) { color: #dbe7f3; }.adoption-steps { border-top: 1px solid rgba(255,255,255,.35); }.adoption-steps div { display: grid; grid-template-columns: 50px 1fr; align-items: center; border-bottom: 1px solid rgba(255,255,255,.35); }.adoption-steps span { color: var(--cyan); font-size: 12px; font-weight: 800; }.inverted { width: fit-content; margin-top: 15px; }
footer { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 25px max(24px, calc((100vw - var(--max)) / 2)); color: #bdcbd8; background: #0b223c; font-size: 13px; }footer .brand-mark { color: var(--white); background: transparent; }
.examples-page { background: #f7f9fb; }.examples-page .site-header { color: var(--ink); }.examples-page .site-header .brand-mark { color: var(--white); background: var(--blue); }.examples-page main { padding-top: 72px; }.examples-hero { padding: 100px max(24px, calc((100vw - var(--max)) / 2)) 72px; color: var(--white); background: var(--blue); }.examples-hero h1 { max-width: 900px; font-size: clamp(48px, 6vw, 78px); }.examples-hero > p:last-child { max-width: 760px; margin: 28px 0 0; color: #dce8f5; font-size: 19px; }
.example-index { position: sticky; z-index: 20; top: 72px; display: grid; grid-template-columns: repeat(7,1fr); padding: 0 max(24px, calc((100vw - var(--max)) / 2)); background: var(--white); border-bottom: 1px solid var(--line); box-shadow: 0 7px 18px rgba(18,54,95,.06); }.example-index a { display: flex; align-items: center; gap: 8px; min-height: 62px; padding: 10px; font-size: 12px; font-weight: 750; text-decoration: none; border-right: 1px solid var(--line); }.example-index a:first-child { border-left: 1px solid var(--line); }.example-index span { color: var(--blue); font: 700 10px ui-monospace, monospace; }
.example-section { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(0, 1.2fr); gap: 70px; padding: 100px max(24px, calc((100vw - var(--max)) / 2)); scroll-margin-top: 134px; background: var(--white); }.example-section.alt { background: var(--blue-soft); }.example-intro { align-self: start; position: sticky; top: 165px; }.example-intro h2 { font-size: clamp(36px, 4vw, 54px); }.example-intro > p:not(.eyebrow) { color: var(--muted); font-size: 17px; }.boundary, .validation-note { display: flex; flex-direction: column; gap: 4px; margin-top: 30px; padding: 17px 19px; border-left: 3px solid var(--blue); background: var(--blue-soft); }.boundary.warning { border-color: #a66a15; background: #fff5e6; }.boundary strong, .validation-note strong { font-size: 13px; }.boundary span, .validation-note span { color: var(--muted); font-size: 13px; }
.code-example { align-self: start; min-width: 0; overflow: hidden; border: 1px solid #315273; background: #112b49; box-shadow: 14px 16px 0 rgba(18,54,95,.08); }.code-heading { height: 50px; display: flex; align-items: center; justify-content: space-between; padding: 0 18px; color: #c4d2e0; background: #0b223c; font: 12px ui-monospace, monospace; }.code-heading button { padding: 7px 10px; color: var(--white); background: transparent; border: 1px solid #617b95; cursor: pointer; }.code-heading button:hover { border-color: var(--cyan); }.code-example pre { max-height: 650px; }
.rules { padding: 0; margin: 28px 0 0; list-style: none; border-top: 1px solid var(--line); }.rules li { padding: 13px 0 13px 22px; color: var(--muted); font-size: 13px; border-bottom: 1px solid var(--line); }.rules li::before { content: "✓"; margin-left: -22px; padding-right: 9px; color: var(--blue); font-weight: 800; }
.provider-section { padding: 100px max(24px, calc((100vw - var(--max)) / 2)); scroll-margin-top: 134px; color: var(--white); background: var(--blue-dark); }.provider-heading { max-width: 850px; }.provider-heading .eyebrow { color: var(--cyan); }.provider-heading > p:last-child { max-width: 720px; color: #c7d4e1; font-size: 17px; }.provider-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 55px; }.provider-output { min-width: 0; overflow: hidden; border: 1px solid #49647e; background: #112b49; }.provider-output header { display: flex; align-items: center; justify-content: space-between; gap: 15px; min-height: 52px; padding: 0 18px; background: #0b223c; }.provider-output header span { color: var(--cyan); font-weight: 800; }.provider-output header b { color: #aebdcb; font-size: 11px; }.provider-output pre { max-height: 640px; font-size: 12px; }.provider-note { display: grid; grid-template-columns: 180px 1fr; gap: 20px; margin-top: 24px; padding: 22px; border: 1px solid #49647e; }.provider-note strong { color: var(--cyan); }.provider-note span { color: #c7d4e1; font-size: 13px; }
.complete-example { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 40px; padding: 90px max(24px, calc((100vw - var(--max)) / 2)); color: var(--white); background: var(--blue-dark); }.complete-example h2 { max-width: 760px; }.complete-example p:not(.eyebrow) { color: #c8d7e5; }.complete-example .button { color: var(--blue-dark); }
@media (max-width: 900px) {
  .site-header { height: 64px; }.nav-toggle { display: grid; place-items: center; }.site-nav { position: absolute; top: 64px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 14px 24px 24px; color: var(--ink); background: var(--white); box-shadow: 0 15px 25px rgba(18,54,95,.12); }.site-nav.open { display: flex; }.site-nav a { padding: 13px 0; border-bottom: 1px solid var(--line); }.nav-cta { margin-top: 12px; padding: 12px !important; color: var(--white); text-align: center; background: var(--blue); }
  .hero { grid-template-columns: 1fr; gap: 45px; min-height: 0; padding-top: 115px; }.contract-window { max-width: 650px; }.friction-grid, .principles, .responsibilities { grid-template-columns: repeat(2,1fr); }.standard-layout { grid-template-columns: 1fr; gap: 35px; }.timeline { grid-template-columns: 1fr; gap: 0; }.timeline li { display: grid; grid-template-columns: 50px 1fr; padding: 0 0 28px; }.timeline li::before { top: 35px; bottom: 0; left: 17px; width: 1px; height: auto; }.timeline h3 { margin-top: 0; }.timeline p { margin-top: 5px; }.split-heading, .adoption-section { grid-template-columns: 1fr; gap: 28px; }.oas-chain { grid-template-columns: 1fr; gap: 0; }.oas-chain div { min-height: 130px; }.oas-chain i { transform: rotate(90deg); }
  .examples-page main { padding-top: 64px; }.example-index { top: 64px; grid-template-columns: repeat(3,1fr); }.example-index a:nth-child(n+4) { display: none; }.example-section { grid-template-columns: 1fr; gap: 35px; padding-top: 75px; padding-bottom: 75px; scroll-margin-top: 126px; }.example-intro { position: static; }.provider-grid { grid-template-columns: 1fr; }.complete-example { grid-template-columns: 1fr; align-items: start; }
}
@media (max-width: 560px) {
  h1 { font-size: 42px; }.section { padding-top: 78px; padding-bottom: 78px; }.hero { gap: 25px; padding-top: 94px; padding-bottom: 58px; }.hero-lead { margin-top: 20px; font-size: 17px; }.hero-actions { margin-top: 22px; }.hero-actions .button { width: 100%; min-height: 44px; }.contract-window { max-height: 155px; }.contract-window pre { padding: 18px 20px; font-size: 12px; }.hero-next { display: none; }.friction-grid, .principles, .responsibilities { grid-template-columns: 1fr; }.friction-grid article { min-height: 190px; }.friction-grid h3 { margin-top: 28px; }.translation { align-items: flex-start; flex-direction: column; }.translation i { transform: rotate(90deg); }.adoption-section { gap: 35px; } footer { align-items: flex-start; flex-direction: column; }
  .examples-hero { padding-top: 70px; padding-bottom: 55px; }.examples-hero h1 { font-size: 42px; }.examples-hero > p:last-child { font-size: 17px; }.example-index { overflow-x: auto; grid-template-columns: repeat(3, minmax(115px,1fr)); }.example-index a { min-height: 54px; padding: 8px; }.example-section { padding-left: 18px; padding-right: 18px; }.example-intro h2 { font-size: 36px; }.code-example { margin: 0 -4px; box-shadow: 7px 8px 0 rgba(18,54,95,.08); }.code-example pre { padding: 20px 18px; font-size: 11px; }.provider-section { padding: 75px 18px; }.provider-heading h2 { font-size: 36px; }.provider-output pre { padding: 18px; font-size: 10px; }.provider-note { grid-template-columns: 1fr; }.complete-example .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }