:root {
  color-scheme: dark light;
  --bg: #0B1514;
  --surface: #12201E;
  --ink: #F5F7F6;
  --muted: #B8C9C1;
  --line: #2E4540;
  --brand: #55D08E;
  --brand-soft: #1B382B;
  --focus: #55D08E;
}
* { box-sizing: border-box; }
html { background: var(--bg); scroll-padding-top: 1rem; }
body { margin: 0; color: var(--ink); background: var(--bg); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.7; font-size: 1rem; }
a { color: var(--brand); text-underline-offset: .22em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: .13em; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; border-radius: 3px; }
.skip-link { position: absolute; left: 1rem; top: -5rem; padding: .7rem; background: var(--surface); z-index: 10; }
.skip-link:focus { top: .5rem; }
.site-header { border-bottom: 1px solid var(--line); }
.bar, main, footer { width: min(100% - 2rem, 780px); margin-inline: auto; }
.bar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-block: .5rem; }
.bar > a { display: inline-flex; align-items: center; min-height: 44px; }
.brand { color: var(--ink); font-weight: 800; text-decoration: none; letter-spacing: .07em; font-size: 1.18rem; }
.brand::before { content: ""; width: .5rem; height: .5rem; border-radius: 50%; background: #55D08E; margin-right: .6rem; }
main { margin-block: clamp(1.2rem, 4vw, 3rem); padding: clamp(1.2rem, 4vw, 2.8rem); background: var(--surface); border: 1px solid var(--line); border-radius: 24px; overflow-wrap: anywhere; }
h1,h2,h3,h4 { line-height: 1.24; letter-spacing: -.025em; text-wrap: balance; hyphens: auto; }
h1 { margin: .5rem 0 1.4rem; font-size: clamp(1.8rem, 6vw, 2.8rem); }
h2 { font-size: clamp(1.2rem, 4vw, 1.5rem); margin-top: 2.6rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
h3 { font-size: 1.12rem; margin-top: 2rem; }
p,li { max-width: 70ch; }
li + li { margin-top: .5rem; }
ul,ol { padding-left: 1.35rem; }
.eyebrow { margin: 0; color: var(--brand); font-weight: 700; letter-spacing: .04em; font-size: .85rem; }
.contents { margin-block: 1rem 1.5rem; padding: .2rem 1rem; background: var(--brand-soft); border: 1px solid var(--line); border-radius: 12px; }
summary { cursor: pointer; font-weight: 650; padding-block: .6rem; min-height: 44px; }
.contents a { display: inline-block; padding-block: .22rem; }
.contents li { margin: 0; }
.contents ul { list-style: none; padding-left: 0; }
footer { padding-bottom: 2rem; color: var(--muted); font-size: .9rem; }
footer nav { display: flex; gap: .3rem 1.1rem; flex-wrap: wrap; }
footer nav a { display: inline-flex; align-items: center; min-height: 44px; }
code { overflow-wrap: anywhere; font-size: .95em; }
@media (prefers-color-scheme: light) {
  :root { --bg: #F5F7F6; --surface: #FFFFFF; --ink: #0B1514; --muted: #4C6358; --line: #DCE3DF; --brand: #14603B; --brand-soft: #EAF6EF; --focus: #14603B; }
}
@media (max-width: 400px) {
  .bar, main, footer { width: calc(100% - 1.5rem); }
  main { border-radius: 18px; padding: 1.1rem; }
}
@media print {
  :root { --bg: white; --surface: white; --ink: black; --muted: #333; --line: #bbb; --brand: #17452b; }
  .site-header, .skip-link, .contents, footer { display: none; }
  main { width: 100%; border: 0; margin: 0; padding: 0; }
  h2,h3 { break-after: avoid; }
  a { color: inherit; }
}