:root { color-scheme: light; --ink: #182230; --muted: #526173; --line: #d7dee8; --accent: #155eef; --soft: #f5f8fc; --warn: #fff7e6; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: #fff; font: 16px/1.6 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
header { background: #102a43; color: #fff; padding: 1.1rem max(1.2rem, calc((100% - 1080px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
header a { color: #fff; text-decoration: none; font-weight: 700; }
nav { display: flex; gap: 1rem; font-weight: 600; }
main { max-width: 1080px; margin: 0 auto; padding: 2.5rem 1.2rem 4rem; }
h1, h2, h3 { line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); max-width: 800px; margin-bottom: 1rem; }
h2 { margin-top: 2.5rem; }
.lead { color: var(--muted); max-width: 760px; font-size: 1.15rem; }
.notice { background: var(--warn); border: 1px solid #f1d08a; padding: 1rem 1.2rem; border-radius: .65rem; margin: 1.5rem 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1rem; margin-top: 1.25rem; }
.card { border: 1px solid var(--line); border-radius: .75rem; padding: 1.2rem; background: #fff; box-shadow: 0 3px 12px #102a4310; }
.card h3 { margin-top: 0; }
.download { display: inline-block; margin: .65rem 0; padding: .55rem .8rem; border-radius: .4rem; background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; }
.meta { color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
code, pre { background: var(--soft); border-radius: .35rem; }
code { padding: .1rem .3rem; }
pre { padding: 1rem; overflow-x: auto; border: 1px solid var(--line); }
li { margin: .35rem 0; }
footer { border-top: 1px solid var(--line); color: var(--muted); max-width: 1080px; margin: 0 auto; padding: 1.5rem 1.2rem 3rem; font-size: .9rem; }
.small { font-size: .9rem; color: var(--muted); }