:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: #23332a;
  background: #f6f7f2;
  line-height: 1.65;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: #145c3d; text-underline-offset: .2em; }
a:hover { color: #0a3f29; }
a:focus-visible, pre:focus-visible { outline: 3px solid #148052; outline-offset: 3px; }
.shell { width: min(100% - 2rem, 72rem); margin-inline: auto; }
.skip { position: absolute; top: -5rem; left: 1rem; z-index: 2; background: white; padding: .5rem; }
.skip:focus { top: 1rem; }
.site-header { background: white; border-bottom: 1px solid #dfe9df; }
.header-inner { min-height: 4.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; padding-block: .8rem; }
.brand { color: #173b29; font-weight: 800; text-decoration: none; }
nav[aria-label="Main navigation"] { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .9rem; font-weight: 650; }
main { padding-block: 2rem 5rem; }
article { max-width: 56rem; }
.hero { padding-block: 1rem 2rem; }
.eyebrow { color: #236747; text-transform: uppercase; letter-spacing: .12em; font-weight: 750; font-size: .75rem; }
h1 { color: #173b29; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.15; letter-spacing: -.035em; margin: .5rem 0 1rem; }
h2 { color: #173b29; line-height: 1.25; font-size: 1.35rem; margin-top: 0; }
h3 { color: #203b2c; line-height: 1.35; font-size: 1rem; margin-bottom: .35rem; }
p { margin: .5rem 0 1rem; }
.lead { max-width: 54rem; color: #47574d; font-size: 1.08rem; }
.notice { border: 1px solid #e8cf8c; background: #fff9e9; border-radius: 1rem; padding: 1rem; color: #654915; }
article > section, main > section:not(.hero) { margin-top: 2rem; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .6rem; font-size: .85rem; }
ul, ol { padding-left: 1.4rem; }
li { margin-block: .6rem; }
.check, .interpretation { border-left: 3px solid #bad7c4; padding-left: 1rem; margin-block: 1.25rem; }
pre { overflow-x: auto; border-radius: .75rem; background: #14251c; color: #e8f8ed; padding: 1rem; font-size: .9rem; line-height: 1.5; }
.steps li { padding-left: .3rem; margin-block: .9rem; }
.guide-grid { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); gap: 1rem; }
.guide-card { margin: 0; padding: 1.25rem; border: 1px solid #dce7dd; border-radius: 1rem; background: white; }
.guide-card h2 { font-size: 1.1rem; }
.guide-card p { color: #536157; font-size: .94rem; }
.method { max-width: 56rem; }
.callout { padding: 1.4rem; border: 1px solid #c9e2d0; border-radius: 1rem; background: #edf7ee; }
.button { display: inline-flex; min-height: 2.8rem; align-items: center; border-radius: .7rem; background: #255e40; color: white; padding: .65rem 1rem; font-weight: 700; text-decoration: none; }
.button:hover { color: white; background: #1b4a32; }
.footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; border-top: 1px solid #dce7dd; padding-block: 1.5rem; font-size: .85rem; color: #58685d; }
@media (max-width: 36rem) {
  .header-inner { align-items: flex-start; }
  nav[aria-label="Main navigation"] { gap: .7rem; }
}