:root {
  --bg: #F1F1EE; --surface: #FFFFFF; --surface2: #ECECE8; --ink: #16181D; --muted: #5B606B;
  --line: #DEDED9; --accent: #D8352A; --accent-text: #A3241B; --pine: #1F5C4A; --pine-soft: #E3F0EA;
  --sun: #FFE7A0; --sun-ink: #5C4A10; --tile: #16181D; --tile-ink: #FFFFFF;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E0F12; --surface: #1B1D22; --surface2: #26292F; --ink: #F2F2EE; --muted: #A3A8B3;
    --line: #2F3239; --accent: #D8352A; --accent-text: #FF7A6E; --pine: #1F6B53; --pine-soft: #15302A;
    --sun: #4A3F1A; --sun-ink: #FFE08A; --tile: #2A2D34; --tile-ink: #F2F2EE;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 500 17px/1.55 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
a { color: var(--accent-text); text-underline-offset: 3px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 22px 0 10px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 22px; letter-spacing: -0.02em; }
.brand span.mark { width: 44px; height: 44px; border-radius: 16px; background: var(--accent); color: #fff; display: grid; place-items: center; }
nav.top a { margin-left: 18px; color: var(--muted); font-weight: 700; font-size: 15px; text-decoration: none; }
nav.top a:hover { color: var(--ink); }
h1 { font-size: clamp(34px, 7vw, 52px); line-height: 1.05; letter-spacing: -0.03em; font-weight: 800; margin: 28px 0 14px; }
h2 { font-size: 22px; line-height: 1.2; letter-spacing: -0.01em; font-weight: 800; margin: 34px 0 8px; }
h3 { font-size: 17px; font-weight: 800; margin: 20px 0 4px; }
p, li { color: var(--ink); }
p.lead { font-size: 19px; color: var(--muted); margin: 0 0 22px; }
p.small, .small { font-size: 14px; color: var(--muted); }
ul, ol { padding-left: 22px; }
li { margin: 6px 0; }
.card { background: var(--surface); border-radius: 28px; padding: 22px; margin: 12px 0; }
.card.dark { background: var(--tile); color: var(--tile-ink); }
.card.dark p, .card.dark li { color: var(--tile-ink); }
.card.sun { background: var(--sun); color: var(--sun-ink); }
.card.sun p { color: var(--sun-ink); }
.grid3 { display: grid; gap: 12px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 640px) { .grid3 { grid-template-columns: 1fr; } nav.top a { margin-left: 12px; } }
.step b.n { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 17px; background: var(--accent); color: #fff; font-weight: 800; margin-bottom: 12px; }
.step h3 { margin: 0 0 2px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.pill { display: inline-block; padding: 8px 14px; border-radius: 999px; background: var(--pine-soft); color: var(--pine); font-weight: 700; font-size: 14px; }
@media (prefers-color-scheme: dark) { .pill { color: #6FD3A8; } }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 56px; padding: 0 26px; border-radius: 22px; background: var(--accent); color: #fff; font-weight: 800; font-size: 17px; text-decoration: none; border: 0; }
.btn.quiet { background: var(--surface2); color: var(--ink); }
.code { font: 600 clamp(30px, 9vw, 44px)/1.1 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace; letter-spacing: 3px; margin: 6px 0 0; word-break: break-all; }
table { width: 100%; border-collapse: collapse; margin: 10px 0; font-size: 15px; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 700; font-size: 13px; }
footer { margin: 44px 0 34px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
footer a { color: var(--muted); margin-right: 16px; font-weight: 700; text-decoration: none; }
footer a:hover { color: var(--ink); }
footer p { color: var(--muted); margin: 12px 0 0; }
.hide { display: none; }