/* Shared styles. No external fonts, scripts or requests: the site loads nothing
   from third parties. */

:root {
  --bg: #fbfcfb;
  --surface: #ffffff;
  --text: #1d2a27;
  --muted: #55645f;
  --accent: #1f6b5a;
  --accent-contrast: #ffffff;
  --border: #d9e2de;
  --soft: #eef5f2;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121816;
    --surface: #18211e;
    --text: #e6eeeb;
    --muted: #a3b3ad;
    --accent: #6cc7b0;
    --accent-contrast: #0c1512;
    --border: #2b3935;
    --soft: #1b2623;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap { width: min(100% - 32px, 760px); margin-inline: auto; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); }
.site-header .wrap {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: 8px 24px; padding-block: 14px;
}
.brand { font-weight: 700; font-size: 1.05rem; color: var(--text); text-decoration: none; }
nav ul { display: flex; gap: 20px; margin: 0; padding: 0; list-style: none; }
nav a { text-decoration: none; color: var(--muted); font-weight: 500; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

/* Content */
main { padding-block: 40px 56px; }
h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.35rem; line-height: 1.3; margin: 2.2em 0 0.5em; }
h3 { font-size: 1.05rem; margin: 1.5em 0 0.3em; }
p, ul, ol { margin: 0 0 1em; }
ul, ol { padding-left: 1.3em; }
li { margin-bottom: 0.4em; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.meta { color: var(--muted); font-size: 0.95rem; }

.summary {
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
  margin-block: 24px;
}
.summary h2 { margin-top: 0; font-size: 1.1rem; }
.summary ul { margin-bottom: 0; }

.toc { font-size: 0.95rem; }
.toc ol { columns: 2; column-gap: 32px; }
@media (max-width: 560px) { .toc ol { columns: 1; } }

.features {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  list-style: none; padding: 0; margin: 24px 0;
}
.features li {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; margin: 0;
}
.features strong { display: block; margin-bottom: 4px; }

.button {
  display: inline-block; background: var(--accent); color: var(--accent-contrast);
  padding: 10px 20px; border-radius: 999px; font-weight: 600; text-decoration: none;
}
.button:hover { filter: brightness(1.08); }

table { border-collapse: collapse; width: 100%; margin: 12px 0 20px; font-size: 0.97rem; }
th, td { text-align: left; vertical-align: top; padding: 10px 12px; border: 1px solid var(--border); }
th { background: var(--soft); }
.table-scroll { overflow-x: auto; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--surface); color: var(--muted); font-size: 0.93rem; }
.site-footer .wrap { padding-block: 22px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-footer ul { display: flex; gap: 18px; margin: 0; padding: 0; list-style: none; }

@media print {
  .site-header nav, .site-footer { display: none; }
  body { background: #fff; color: #000; font-size: 12pt; }
  a { color: #000; }
}