:root {
  --accent: #26A69A;
  --ink: #1f2933;
  --muted: #6b7480;
  --line: #e6e9ed;
  --bg: #f7f9fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Sarabun",
    "Noto Sans Thai", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 22px 80px;
}

header.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

header.brand .logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  display: block;
}

header.brand .name {
  font-size: 20px;
  font-weight: 700;
}

h1 {
  font-size: 26px;
  margin: 26px 0 4px;
}

.effective {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 28px;
}

h2 {
  font-size: 18px;
  margin: 34px 0 10px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 15px;
  margin: 18px 0 6px;
  color: var(--ink);
}

p, li { font-size: 15.5px; }

ul { padding-left: 20px; }
li { margin-bottom: 6px; }

a { color: var(--accent); }

strong { font-weight: 700; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  margin-top: 26px;
}

.contact {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 22px;
  margin-top: 28px;
}

.nav-links {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.nav-links a {
  display: inline-block;
  padding: 10px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

footer {
  margin-top: 50px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}