/* Static learning material; no advertising or third-party requests. */
nav { display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; }
main > nav { padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
h1 { font-size: clamp(2rem, 6vw, 3rem); }
.examples { padding: 1rem 1.2rem; background: var(--paper); border-radius: .6rem; }
.examples dt { font-size: 1.2rem; color: var(--ink); margin-top: 1rem; }
.examples dt:first-child { margin-top: 0; }
.examples dd { margin: .2rem 0 0; color: var(--muted); }
details { border-top: 1px solid var(--line); padding: .8rem 0; }
summary { cursor: pointer; color: var(--ink); }
section { scroll-margin-top: 1rem; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }