:root {
  --bg: #fff7ec;
  --card: #ffffff;
  --ink: #27304a;
  --ink-soft: #5b6480;
  --line: #eadfcd;
  --accent: #ff7a45;
  --accent-ink: #c4502a;
  --blue: #3e8ef7;
  --chip: #fff0e3;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #161b2b;
    --card: #20273b;
    --ink: #f3eee6;
    --ink-soft: #b4bbd0;
    --line: #333c57;
    --accent: #ff8a5c;
    --accent-ink: #ffb08f;
    --blue: #7fb3ff;
    --chip: #2b2f45;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 'Nunito', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
a { color: var(--blue); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

header.top {
  background: var(--accent);
  color: #fff;
  border-bottom: 6px solid var(--accent-ink);
}
header.top .wrap { display: flex; align-items: center; gap: 12px; padding-top: 14px; padding-bottom: 14px; }
header.top img { width: 44px; height: 44px; border-radius: 12px; box-shadow: 0 2px 0 rgba(0, 0, 0, 0.18); }
header.top a.brand { color: #fff; text-decoration: none; font: 600 20px/1.1 'Fredoka', system-ui, sans-serif; }
header.top a.brand small { display: block; font: 600 12px/1.2 'Nunito', system-ui, sans-serif; letter-spacing: 1.5px; opacity: 0.9; text-transform: uppercase; }

main { padding: 28px 0 40px; }
h1, h2, h3 { font-family: 'Fredoka', system-ui, sans-serif; font-weight: 600; line-height: 1.2; }
h1 { font-size: 30px; margin: 0 0 6px; }
h2 { font-size: 21px; margin: 34px 0 8px; padding-top: 4px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
.meta { color: var(--ink-soft); font-size: 14px; margin: 0 0 18px; }

.card {
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 18px;
  padding: 18px 18px 6px;
  margin: 18px 0;
}
.card.summary { border-color: var(--accent); }
.card h2 { margin-top: 0; }

ul { padding-left: 22px; }
li { margin: 4px 0; }

table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 8px 0 14px; }
th, td { text-align: left; vertical-align: top; padding: 9px 10px; border-bottom: 1px solid var(--line); }
th { font-family: 'Fredoka', system-ui, sans-serif; font-weight: 600; background: var(--chip); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
@media (max-width: 560px) {
  table.stack thead { display: none; }
  table.stack tr { display: block; border-bottom: 1px solid var(--line); padding: 6px 0; }
  table.stack td { display: block; border: 0; padding: 3px 4px; }
  table.stack td::before { content: attr(data-label); display: block; font-weight: 700; font-size: 12px; letter-spacing: 0.6px; text-transform: uppercase; color: var(--ink-soft); }
}

nav.toc { font-size: 15px; }
nav.toc ol { padding-left: 22px; margin: 6px 0 12px; }

.links { display: grid; gap: 12px; margin: 22px 0; }
.links a {
  display: block;
  background: var(--card);
  border: 2px solid var(--line);
  border-bottom-width: 5px;
  border-radius: 18px;
  padding: 16px 18px;
  color: var(--ink);
  text-decoration: none;
}
.links a strong { font: 600 19px/1.3 'Fredoka', system-ui, sans-serif; display: block; }
.links a span { color: var(--ink-soft); font-size: 15px; }
.links a:hover { border-color: var(--accent); }

footer { border-top: 2px solid var(--line); color: var(--ink-soft); font-size: 14px; padding: 18px 0 30px; }
footer a { color: inherit; }