:root { color-scheme: dark; --bg: #0b1526; --surface: #142238; --text: #edf3fa; --muted: #b9c8dc; --accent: #68e4d4; --border: #3b506a; }
* { box-sizing: border-box; }
html { font: 100%/1.75 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body { margin: 0; background: var(--bg); color: var(--text); }
header, main, footer { width: min(100% - 2rem, 52rem); margin-inline: auto; }
header { padding-block: 2rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; border-bottom: 1px solid var(--border); }
.brand { font-size: 1.75rem; font-weight: 750; letter-spacing: -.03em; }
.brand span { display: block; font-size: .875rem; color: var(--muted); font-weight: 400; letter-spacing: normal; }
nav { display: flex; flex-wrap: wrap; gap: .5rem; }
nav a { display: inline-flex; align-items: center; min-height: 3rem; padding: .5rem 1rem; border: 1px solid var(--border); border-radius: 999px; }
nav a[aria-current] { background: var(--accent); color: var(--bg); font-weight: 700; text-decoration: none; }
a { color: var(--accent); text-underline-offset: .22em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: .15em; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
main { padding-block: 2.5rem; }
.eyebrow { color: var(--accent); font-size: .875rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.language-note { color: var(--muted); }
h1 { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.2; letter-spacing: -.03em; margin-block: 2rem 1.5rem; }
h2 { font-size: 1.35rem; line-height: 1.4; margin-block: 2.5rem 1rem; scroll-margin-top: 1rem; }
p { margin-block: 1rem; overflow-wrap: anywhere; }
code { font-size: .9em; overflow-wrap: anywhere; }
details { margin-block: 1.5rem; padding: .75rem 1rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); }
summary { cursor: pointer; min-height: 3rem; padding-block: .6rem; font-weight: 650; }
ol { list-style: none; padding: 0; }
li a { display: block; padding-block: .5rem; min-height: 3rem; }
footer { border-top: 1px solid var(--border); padding-block: 1.5rem 2.5rem; color: var(--muted); font-size: .875rem; }
.skip { position: absolute; left: 1rem; top: -10rem; padding: .75rem; background: var(--bg); }
.skip:focus { top: 1rem; }
@media print { :root { --bg: #fff; --text: #111; --muted: #333; --accent: #125c55; --border: #aaa; } header nav, details, .skip { display: none; } header, main, footer { width: 100%; } }