:root {
    color-scheme: dark;
    --bg: #0b0d10;
    --surface: #12151a;
    --surface-2: #181c22;
    --text: #f5f7fa;
    --muted: #aab2bf;
    --line: #272d36;
    --accent: #9ee6b0;
    --accent-2: #c7a7ff;
    --max: 860px;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
    margin: 0;
    background: radial-gradient(circle at 15% -10%, rgba(199,167,255,.11), transparent 30%), var(--bg);
    color: var(--text);
    font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 3px; }
.shell { width: min(calc(100% - 36px), var(--max)); margin: 0 auto; }
header { padding: 34px 0 20px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-weight: 750; letter-spacing: -.02em; }
.mark { width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; background: linear-gradient(145deg, var(--accent-2), var(--accent)); color: #0b0d10; font-weight: 900; }
nav { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 18px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--text); }
main { padding: 46px 0 72px; }
h1 { margin: 0 0 10px; font-size: clamp(34px, 6vw, 56px); line-height: 1.05; letter-spacing: -.045em; }
h2 { margin: 38px 0 10px; font-size: 21px; letter-spacing: -.025em; }
p, li { color: #d5dae2; }
.lead { color: var(--muted); font-size: 18px; max-width: 720px; }
.meta { color: var(--muted); font-size: 14px; margin: 14px 0 32px; }
.card { margin-top: 28px; padding: 22px; border: 1px solid var(--line); background: linear-gradient(180deg, var(--surface-2), var(--surface)); border-radius: 18px; }
ul { padding-left: 22px; }
code { color: #eadfff; background: #191620; padding: 2px 6px; border-radius: 6px; }
.button { display: inline-flex; margin-top: 10px; padding: 11px 15px; border-radius: 12px; background: var(--text); color: #0b0d10; text-decoration: none; font-weight: 750; }
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 13px; }
@media (prefers-color-scheme: light) {
    :root { color-scheme: light; --bg: #fff; --surface: #fafafa; --surface-2: #fff; --text: #15171a; --muted: #69717d; --line: #e7e9ed; --accent: #237a45; --accent-2: #7553b7; }
    body { background: radial-gradient(circle at 15% -10%, rgba(117,83,183,.07), transparent 30%), var(--bg); }
    p, li { color: #343941; }
    code { color: #563d86; background: #f4effb; }
    .button { color: #fff; background: #15171a; }
}