:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1d1b18;
  --muted: #6b665e;
  --line: #e8e4dc;
  --accent: #e0622b;
  --accent-soft: #fdeee6;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141311;
    --surface: #1d1b18;
    --text: #f1eee8;
    --muted: #a39d93;
    --line: #2e2b27;
    --accent: #f07a45;
    --accent-soft: #2c1d15;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding-inline: 20px;
}

a { color: var(--accent); text-underline-offset: 3px; }

.site-header {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand span { color: var(--accent); }

.site-nav { display: flex; flex-wrap: wrap; gap: 6px; }

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  padding: 6px 12px;
  border-radius: 999px;
}

.site-nav a:hover { color: var(--text); }

.site-nav a[aria-current="page"] {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding-block: 40px 64px;
}

h1 {
  font-size: clamp(30px, 6vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}

.meta { color: var(--muted); font-size: 15px; margin: 0 0 32px; }

h2 {
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 44px 0 10px;
  padding-top: 8px;
}

h3 { font-size: 17px; margin: 24px 0 6px; }

p, ul, ol { margin: 0 0 14px; }

ul, ol { padding-left: 22px; }

li { margin-bottom: 6px; }

.lead { font-size: 19px; color: var(--muted); }

.callout {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 20px 0;
}

.callout p:last-child { margin-bottom: 0; }

.table-wrap { overflow-x: auto; margin: 16px 0 20px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  min-width: 520px;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin: 24px 0;
}

.contact-button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 999px;
  margin-top: 4px;
}

details {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

summary {
  cursor: pointer;
  font-weight: 600;
  list-style-position: outside;
}

details[open] summary { margin-bottom: 8px; }

details p:last-child { margin-bottom: 0; }

.toc {
  columns: 2 240px;
  font-size: 15px;
  padding-left: 18px;
}

.site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding-block: 24px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}