:root {
  --bg: #fbfaf8; --surface: #ffffff; --ink: #1b1d21; --muted: #5b616b; --line: #e4e1dc;
  --accent: #b3262d; --accent-ink: #ffffff; --todo-bg: #fff3c4; --todo-ink: #5c4300;
  --radius: 10px; --measure: 46rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121417; --surface: #191c20; --ink: #e9e7e3; --muted: #a3a8b0; --line: #2b2f35;
    --accent: #e0575c; --accent-ink: #121417; --todo-bg: #4a3b06; --todo-ink: #ffe9a3; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: .5rem 1rem; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; }
.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 16px; }
header.site { border-bottom: 1px solid var(--line); background: var(--surface); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding-top: .9rem; padding-bottom: .9rem; }
.brand { font-weight: 700; letter-spacing: .02em; color: var(--ink); text-decoration: none; font-size: 1.05rem; }
.brand span { color: var(--accent); }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem 1.1rem; }
nav a { color: var(--muted); text-decoration: none; font-size: .95rem; padding: .2rem 0; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
nav a[aria-current="page"] { border-bottom: 2px solid var(--accent); }
main { padding: 2.5rem 0 3rem; }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.3rem); line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; margin: 2.2rem 0 .6rem; }
.lede { color: var(--muted); font-size: 1.08rem; margin: 0 0 1.8rem; }
.meta { color: var(--muted); font-size: .9rem; margin: 0 0 2rem; }
ul.list { padding-left: 1.2rem; } ul.list li { margin: .35rem 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem; margin: 1rem 0; }
.card h2 { margin-top: 0; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); margin: 1.5rem 0; }
.grid .card { margin: 0; }
.grid .card h2 { font-size: 1.05rem; }
.note { border-left: 4px solid var(--accent); }
mark.todo { background: var(--todo-bg); color: var(--todo-ink); padding: 0 .3em; border-radius: 4px; font-weight: 600; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; padding: 1.6rem 0 2.2rem; }
footer.site p { margin: .35rem 0; }
footer.site a { color: var(--muted); }