:root { color-scheme: light dark; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55; margin: 0; background: Canvas; color: CanvasText;
}
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 1rem 1.25rem; }
header { display: flex; gap: 1rem; justify-content: space-between; align-items: center;
         border-bottom: 1px solid rgba(128,128,128,.3); flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { display: block; height: 34px; width: auto; }
nav a { margin-left: .75rem; }
footer { border-top: 1px solid rgba(128,128,128,.3); font-size: .85rem; opacity: .8; }
h1 { font-size: 1.7rem; line-height: 1.2; }
a { color: inherit; }
.cta a { display: inline-block; padding: .6rem 1rem; border: 2px solid currentColor;
         border-radius: .4rem; text-decoration: none; font-weight: 600; }
label { display: block; margin: .6rem 0 .15rem; font-weight: 600; font-size: .9rem; }
input, select { padding: .4rem; font-size: 1rem; min-width: 8rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: .5rem 1rem; }
button { padding: .6rem 1rem; font-size: 1rem; font-weight: 600; border-radius: .4rem;
         border: 2px solid currentColor; background: transparent; color: inherit; cursor: pointer; }
.findings { border-left: 4px solid #c0392b; padding-left: 1rem; }
.ok { border-left: 4px solid #2e8b57; padding-left: 1rem; }
table { border-collapse: collapse; width: 100%; }
td, th { text-align: left; padding: .25rem .5rem; border-bottom: 1px solid rgba(128,128,128,.25); }

figure { margin: 1.5rem 0; }
figure img { max-width: 100%; height: auto; display: block; }
figcaption { font-size: .82rem; opacity: .75; margin-top: .4rem; line-height: 1.4; }
.thumb img { border: 1px solid rgba(128,128,128,.3); border-radius: .4rem;
             padding: .75rem; background: rgba(128,128,128,.05); }
ol li { margin-bottom: .5rem; }
h2 { margin-top: 2rem; font-size: 1.2rem; }