:root {
  --bg: #f6f1e3;
  --paper: #fffdf6;
  --ink: #1f2a22;
  --muted: #5b6a5f;
  --green: #2f4f3a;
  --yellow: #f2c230;
  --line: #d9cfb5;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.75 "Sarabun", "Mitr", system-ui, sans-serif;
}
a { color: var(--green); }
header {
  background: var(--green);
  color: #fff;
  padding: 0 16px;
}
.bar {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-block: 12px;
}
.brand {
  font-family: "Mitr", sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  color: #fff;
  text-decoration: none;
}
.brand span { color: var(--yellow); }
nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }
nav a { color: #e9efe9; text-decoration: none; font-size: .95rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--yellow); }
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 16px 56px;
}
h1, h2, h3 { font-family: "Mitr", sans-serif; line-height: 1.3; color: var(--green); }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin: 0 0 12px; }
h2 { font-size: 1.4rem; margin: 36px 0 8px; }
h3 { font-size: 1.1rem; margin: 20px 0 4px; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 60ch; }
.hero {
  background: var(--paper);
  border: 2px solid var(--line);
  border-radius: 16px;
  padding: clamp(20px, 5vw, 40px);
}
.btn {
  display: inline-block;
  margin-top: 16px;
  background: var(--yellow);
  color: var(--ink);
  font-family: "Mitr", sans-serif;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid var(--ink);
}
.btn:hover { transform: translateY(-1px); }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 20px;
}
.card h3 { margin-top: 0; }
.doc { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: clamp(18px, 4vw, 36px); }
.doc p, .doc li { max-width: 72ch; }
.updated { color: var(--muted); font-size: .9rem; }
footer {
  border-top: 1px solid var(--line);
  padding: 20px 16px;
  text-align: center;
  color: var(--muted);
  font-size: .9rem;
}
footer a { margin: 0 8px; }