:root {
  --green: #16685D;
  --green-dark: #0B342F;
  --cream: #F5F0E6;
  --text: #1F1F1F;
  --muted: #6E6A60;
  --border: #E2DDD3;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Noto Sans Thai", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}

header {
  background: #fff;
  border-top: 4px solid var(--green);
  border-bottom: 1px solid var(--border);
  padding: 18px 20px;
}

.header-inner {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

header .brand { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
header .brand .logo { height: 46px; width: auto; object-fit: contain; display: block; }
header .brand small { font-size: 13px; font-weight: 400; color: var(--muted); }

.lang-toggle { display: flex; gap: 6px; }
.langbtn {
  border: 1px solid var(--green);
  background: transparent;
  color: var(--green);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.langbtn.active { background: var(--green); color: #fff; border-color: var(--green); }

main { max-width: 820px; margin: 0 auto; padding: 32px 20px 64px; }

.updated { color: var(--muted); font-size: 13px; margin-bottom: 24px; }

h1 { font-size: 26px; color: var(--text); margin: 0 0 6px; }
h2 { font-size: 18px; color: var(--green); margin: 30px 0 8px; }
p, li { font-size: 15px; color: var(--text); }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }
a { color: var(--green); }
strong { font-weight: 700; }

.card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 14px 0;
  text-decoration: none;
  color: var(--text);
  transition: box-shadow .15s, transform .15s;
}
.card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.08); transform: translateY(-1px); }
.card .t { font-size: 17px; font-weight: 700; color: var(--green); }
.card .d { font-size: 14px; color: var(--muted); margin-top: 4px; }

.contact {
  background: var(--cream);
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 28px;
  line-height: 1.9;
}

.map-btn {
  display: inline-block;
  margin: 8px 0;
  padding: 8px 16px;
  border: 1.5px solid var(--green);
  border-radius: 8px;
  color: var(--green);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}
.map-btn:hover { background: var(--green); color: #fff; }

footer {
  border-top: 1px solid var(--border);
  padding: 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.backlink { display: inline-block; margin-bottom: 18px; font-size: 14px; }

/* language switching */
body.lang-th [lang="en"] { display: none; }
body.lang-en [lang="th"] { display: none; }