* { box-sizing: border-box; }
body { margin: 0; background: #20212a; color: #efedf6; font: 1rem/1.7 system-ui, sans-serif; }
a { color: #ffad66; }
:focus-visible { outline: 3px solid #80eee0; outline-offset: 4px; }
header, main, footer { padding: 20px; }
header, footer { background: #282934; }
nav { display: flex; flex-wrap: wrap; gap: 12px 20px; }
main { max-width: 65ch; margin-inline: auto; }
h1 { margin-top: 0; font-size: clamp(1.8rem, 6vw, 2.6rem); line-height: 1.15; }
h2 { font-size: 1.25rem; }
p { margin: 0 0 16px; }
section + section { margin-top: 24px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 16px; }
.card { padding: 16px; background: #423025; border: 1px solid #77513c; border-radius: 8px; }
.reading { font-size: clamp(1rem, 2.5vw, 1.2rem); }
details { border: 1px solid #777582; border-radius: 8px; padding: 16px; }
summary { cursor: pointer; font-weight: 700; }
details p { margin: 16px 0 0; }