:root {
  --bg: #fafcfa;
  --panel: #ffffff;
  --mat: #d5ede1;
  --ink: #12302a;
  --muted: #536a64;
  --line: #cfdcd6;
  --link: #0e6b4c;
  --yolk: #ffc62e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1f1b;
    --panel: #16302a;
    --mat: #1d3a33;
    --ink: #eaf4ef;
    --muted: #a9bdb6;
    --line: #2b4a42;
    --link: #7fd6ac;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 500 16px/1.6 'Libre Franklin', system-ui, -apple-system, sans-serif;
}
a { color: var(--link); font-weight: 700; }
.wrap { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 16px; border-bottom: 2px solid var(--ink); }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 900; font-size: 20px; }
.brand img { width: 36px; height: 36px; border-radius: 9px; border: 2px solid var(--ink); }
nav a { margin-left: 14px; font-size: 14px; }
h1 { font-weight: 900; font-size: 34px; line-height: 1.1; letter-spacing: -0.5px; margin: 28px 0 6px; }
h2 { font-weight: 900; font-size: 22px; margin: 32px 0 6px; padding-top: 10px; border-top: 6px solid var(--ink); }
h3 { font-weight: 700; font-size: 17px; margin: 22px 0 4px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0 12px; }
.table th, .table td { text-align: left; vertical-align: top; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--line); }
.table th { font-weight: 900; border-bottom: 2px solid var(--ink); }
.scroll { overflow-x: auto; }
ul { padding-left: 20px; }
li { margin: 4px 0; }
footer { margin-top: 40px; padding-top: 16px; border-top: 2px solid var(--ink); font-size: 14px; color: var(--muted); }
footer a { margin-right: 14px; display: inline-block; }
.hero { margin-top: 28px; background: var(--mat); border: 2px solid var(--ink); border-radius: 24px; padding: 28px 20px; }
.hero h1 { margin-top: 0; }
.hero p { font-size: 18px; margin: 8px 0 0; }
.button { display: inline-block; margin-top: 18px; background: var(--yolk); color: #12302a; text-decoration: none; font-weight: 900; padding: 12px 20px; border: 2px solid #12302a; border-radius: 16px; box-shadow: 0 4px 0 #12302a; }
.cards { display: grid; gap: 12px; margin-top: 20px; }
.card { background: var(--panel); border: 2px solid var(--ink); border-radius: 16px; padding: 14px 16px; }
.card b { display: block; }
@media (max-width: 480px) { nav a { margin-left: 10px; } h1 { font-size: 28px; } }
.demo { display: block; width: 100%; max-width: 360px; margin: 24px auto 0; border: 2px solid var(--ink); border-radius: 24px; background: var(--mat); }