* { box-sizing: border-box; }
:root { color-scheme: light; --deep-atlantic: #102b3f; --passport-blue: #245a78; --signature-teal: #087f78; --light-cyan: #64c9d0; --mist: #f0f7f8; --white: #ffffff; --ink: var(--deep-atlantic); --muted: #526371; --paper: var(--white); --panel: var(--mist); --line: #cbd5dc; --code-bg: #edf1f3; --teal-ring: rgb(8 127 120 / 18%); --cyan-ring: rgb(100 201 208 / 13%); --teal-wash: rgb(8 127 120 / 7%); --card-shadow: rgb(16 43 63 / 7%); --accent: var(--passport-blue); --accent-dark: var(--deep-atlantic); --focus: var(--signature-teal); --surface-radius: .55rem; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.65 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration-thickness: .08em; text-underline-offset: .16em; }
a:hover { color: var(--accent-dark); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: .15rem; }
.skip-link { position: absolute; z-index: 10; top: .5rem; left: .5rem; transform: translateY(-180%); padding: .6rem .8rem; color: white; background: var(--accent-dark); }
.skip-link:focus { transform: translateY(0); }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; padding: .65rem max(1.25rem, calc((100vw - 74rem)/2)); border-bottom: 2px solid var(--signature-teal); background: var(--mist); box-shadow: 0 3px 12px var(--card-shadow); }
.brand { display: flex; align-items: center; gap: .65rem; color: var(--ink); font-weight: 750; text-decoration: none; white-space: nowrap; }
.brand-mark { display: block; width: 3rem; height: 3rem; flex: none; }
.brand-title { color: var(--ink); }
.brand-version { color: var(--muted); font-size: .86rem; font-weight: 500; }
.nav-list { display: flex; flex-wrap: nowrap; align-items: center; justify-content: flex-end; gap: .2rem .45rem; margin: 0; padding: 0; list-style: none; }
.nav-list > li + li { margin-top: 0; }
.nav-list a { display: flex; min-height: 44px; align-items: center; padding: .35rem .55rem; border-radius: .3rem; font-size: .9rem; line-height: 1.25; text-decoration: none; white-space: nowrap; }
.nav-list a:hover { background: var(--white); color: var(--deep-atlantic); text-decoration: underline; text-decoration-thickness: .1em; }
.nav-list [aria-current="page"] { background: var(--mist); color: var(--deep-atlantic); font-weight: 700; box-shadow: inset 0 -2px var(--signature-teal); }
.page-shell { width: min(100% - 2.5rem, 70rem); min-height: 70vh; margin: 0 auto; padding: clamp(2rem, 5vw, 4rem) 0; }
.prose { max-width: 72ch; }
.prose h2 { padding-inline-start: .7rem; border-inline-start: 3px solid var(--light-cyan); }
.prose h3 { color: var(--passport-blue); }
h1, h2, h3 { color: var(--deep-atlantic); line-height: 1.22; text-wrap: balance; }
h1 { margin: .25rem 0 1rem; font-size: clamp(2.1rem, 5vw, 3.4rem); letter-spacing: -.035em; }
h2 { margin-top: 2.2rem; font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { margin-top: 1.7rem; font-size: 1.2rem; }
p, ul, ol { max-width: 75ch; }
li + li { margin-top: .35rem; }
.eyebrow { margin: 0; color: var(--accent); font-size: .82rem; font-weight: 750; letter-spacing: .075em; text-transform: uppercase; }
.lede { max-width: 65ch; color: var(--muted); font-size: 1.2rem; }
.hero { position: relative; isolation: isolate; overflow: hidden; padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid #d5e5e8; border-radius: .7rem; background: var(--mist); }
.hero::after { position: absolute; z-index: -1; top: 2rem; right: 6rem; width: 12rem; aspect-ratio: 1; border: 1px solid var(--teal-ring); border-radius: 50%; box-shadow: 0 0 0 1rem var(--cyan-ring), 0 0 0 2rem var(--teal-wash), inset 0 0 0 1rem var(--cyan-ring); content: ""; pointer-events: none; }
.hero .eyebrow { display: inline-block; padding: .3rem .6rem; border: 1px solid rgb(8 127 120 / 22%); border-radius: 999px; background: var(--white); color: var(--signature-teal); }
.hero > p:not(.eyebrow) { max-width: 66ch; font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 1.6rem; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: .65rem 1rem; border: 1px solid var(--signature-teal); border-radius: .35rem; background: var(--signature-teal); color: var(--white); font-weight: 700; text-decoration: none; }
.button:hover { background: var(--accent-dark); color: white; }
.home-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.5rem; }
.home-grid article, .card-list li { padding: 1rem 1.1rem; border: 1px solid var(--line); border-top: 3px solid var(--signature-teal); border-radius: var(--surface-radius); background: linear-gradient(180deg, var(--mist) 0, var(--white) 3.5rem); box-shadow: 0 2px 8px var(--card-shadow); }
.home-grid h2 { margin-top: 0; font-size: 1.25rem; }
.home-grid h2 { color: var(--passport-blue); }
.card-list { display: grid; gap: .8rem; margin: 1.5rem 0; padding: 0; list-style: none; }
.card-list li p { margin-bottom: 0; color: var(--muted); }
.callout, .prose blockquote { margin: 1.4rem 0; padding: .9rem 1.1rem; border: 1px solid #d5e5e8; border-inline-start: .3rem solid var(--signature-teal); border-radius: 0 var(--surface-radius) var(--surface-radius) 0; background: var(--mist); color: var(--deep-atlantic); }
.prose blockquote > p:last-child { margin-bottom: 0; }
.table-wrap { width: 100%; max-width: 100%; overflow-x: auto; overscroll-behavior-inline: contain; }
.table-wrap:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: .15rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.5rem; font-size: .94rem; }
th, td { padding: .65rem .75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--panel); }
code { overflow-wrap: anywhere; padding: .08em .25em; border-radius: .2rem; background: var(--code-bg); color: var(--deep-atlantic); font-size: .91em; }
pre { max-width: 100%; overflow-x: auto; padding: 1rem; border: 1px solid var(--line); border-radius: .4rem; background: #f3f6f7; }
.prose img { display: block; width: 100%; max-width: 100%; height: auto; }
.prose a:has(> img) { cursor: zoom-in; }
figure { margin: 1.5rem 0; }
figure img { width: 100%; height: auto; border: 1px solid var(--line); background: white; }
figcaption { color: var(--muted); font-size: .9rem; }
.site-footer { padding: 1.5rem max(1.25rem, calc((100vw - 74rem)/2)); border-top: 3px solid var(--signature-teal); background: var(--deep-atlantic); color: var(--white); font-size: .9rem; }
.site-footer a { color: var(--light-cyan); }
.site-footer a:hover { color: var(--white); }
.site-footer p { margin: .25rem 0; }
@media (max-width: 1100px) { .site-header { align-items: flex-start; flex-direction: column; gap: .35rem; } .nav-list { display: grid; grid-template-columns: repeat(4, minmax(0, max-content)); justify-content: start; gap: .1rem .5rem; } .home-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { body { font-size: .97rem; } .page-shell { width: min(100% - 1.5rem, 70rem); } .site-header { padding-inline: .75rem; } .nav-list { grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: .15rem .5rem; } .nav-list a { font-size: .9rem; } .site-footer { padding-inline: .75rem; } .hero { padding: 1.25rem; } .hero-actions { align-items: stretch; gap: .65rem; } .hero-actions > * { max-width: 100%; } }
@media (max-width: 1100px) { .hero::after { display: none; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation-duration: .01ms !important; transition-duration: .01ms !important; } }