:root { color-scheme: light; font-family: system-ui, sans-serif; color: #20262c; background: #faf9f6; }
* { box-sizing: border-box; }
body { max-width: 1000px; padding: 2rem; margin: auto; line-height: 1.65; }
header { margin-bottom: 3rem; }
h1, h2, h3 { line-height: 1.2; color: #142f36; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); margin: .5rem 0 1rem; }
h2 { margin-top: 2.5rem; }
h3 { margin-top: 1.75rem; }
a { color: #17616c; text-underline-offset: .2em; }
a:hover { color: #94341b; }
a:focus-visible { outline: 3px solid #17616c; outline-offset: 4px; }
.eyebrow { font-size: .85rem; text-transform: uppercase; letter-spacing: .12em; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 1.5rem; }
.assignment { max-width: 480px; padding: 1.25rem; background: white; border: 1px solid #dce1de; border-radius: .75rem; }
.assignment img { aspect-ratio: 4 / 3; object-fit: cover; }
.assignment a { text-decoration: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
figure { margin: 2rem 0; }
figure img { margin: auto; }
figcaption { margin-top: .75rem; font-size: .9rem; color: #505c61; }
pre { overflow-x: auto; padding: 1.25rem; background: #e9eeeb; border-radius: .5rem; line-height: 1.5; }
code { font-size: .9em; }
table { display: block; overflow-x: auto; border-collapse: collapse; margin: 1.5rem 0; }
th, td { padding: .65rem; border-bottom: 1px solid #ced7d2; text-align: left; }
th { background: #edf1ee; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid #ced7d2; }
@media (max-width: 600px) { body { padding: 1.25rem; } th, td { padding: .45rem; font-size: .9rem; } }