:root {
  --brand: #267A5A;
  --brand-dark: #1B5A42;
  --brand-tint: #E8F2EE;
  --ink: #111418;
  --ink-soft: #3a4149;
  --muted: #6b7480;
  --hairline: #e3e7eb;
  --bg: #ffffff;
  --bg-soft: #f6f8f7;
  --max: 720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--brand-dark); text-decoration: underline; text-decoration-color: rgba(38,122,90,0.35); text-underline-offset: 2px; }
a:hover { text-decoration-color: var(--brand-dark); }

/* Header */
.site-header {
  background: var(--brand);
  color: #fff;
  border-bottom: 1px solid var(--brand-dark);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  color: #fff;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.5px;
  text-decoration: none;
}
.brand:hover { text-decoration: none; opacity: 0.9; }
.site-nav { display: flex; gap: 14px; flex-wrap: wrap; }
.site-nav a {
  color: rgba(255,255,255,0.92);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.site-nav a:hover {
  color: #fff;
  border-bottom-color: rgba(255,255,255,0.6);
}

/* Main */
main {
  padding: 24px 20px 56px;
}
.doc {
  max-width: var(--max);
  margin: 0 auto;
}
.doc-title {
  color: var(--brand-dark);
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: -0.6px;
  margin: 8px 0 20px;
  font-weight: 800;
}

/* Markdown body */
.doc h1 { font-size: 28px; color: var(--brand-dark); letter-spacing: -0.5px; margin-top: 0; margin-bottom: 16px; font-weight: 800; }
.doc h2 { font-size: 22px; color: var(--brand-dark); letter-spacing: -0.2px; margin-top: 36px; margin-bottom: 10px; font-weight: 700; }
.doc h3 { font-size: 18px; color: var(--ink); margin-top: 22px; margin-bottom: 6px; font-weight: 700; }
.doc h4 { font-size: 16px; color: var(--ink); margin-top: 18px; margin-bottom: 4px; font-weight: 700; }
.doc p { color: var(--ink-soft); margin: 0 0 14px; }
.doc strong { color: var(--ink); font-weight: 700; }
.doc em { font-style: italic; }
.doc ul, .doc ol { color: var(--ink-soft); padding-left: 22px; margin: 4px 0 16px; }
.doc li { margin-bottom: 6px; }
.doc blockquote {
  margin: 14px 0;
  padding: 12px 16px;
  background: var(--brand-tint);
  border-left: 3px solid var(--brand);
  border-radius: 0 6px 6px 0;
  color: var(--ink-soft);
  font-style: italic;
}
.doc blockquote p:last-child { margin-bottom: 0; }
.doc hr { border: 0; border-top: 1px solid var(--hairline); margin: 28px 0; }
.doc code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  background: var(--bg-soft);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 14px;
}

/* Index page */
.lede { font-size: 17px; color: var(--ink-soft); margin-bottom: 24px; }
.doc-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 10px;
}
.doc-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--bg);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.doc-list a:hover {
  border-color: var(--brand);
  background: var(--brand-tint);
}
.doc-link-title { font-weight: 600; font-size: 16px; }
.doc-link-sub { color: var(--muted); font-size: 13px; }
.contact-block { color: var(--ink-soft); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--hairline);
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 13px;
  padding: 18px 20px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.site-footer a { color: var(--muted); }

@media (max-width: 480px) {
  .doc-title { font-size: 26px; }
  .doc h2 { font-size: 20px; }
}