:root {
  --bg: #f7f8f5;
  --surface: #ffffff;
  --text: #17201b;
  --muted: #5d6b62;
  --border: #dfe5dc;
  --brand: #0f7a4a;
  --brand-soft: #e2f3ea;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1411;
    --surface: #161d19;
    --text: #e8eee9;
    --muted: #9aa8a0;
    --border: #2a352f;
    --brand: #34c182;
    --brand-soft: #173326;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans Thai", system-ui, sans-serif;
  line-height: 1.7;
}
a { color: var(--brand); }
.wrap { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 10px; margin-bottom: 32px; }
.mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--brand); color: var(--bg); font-weight: 700; font-size: 20px; }
.name { font-weight: 700; font-size: 22px; color: var(--text); text-decoration: none; }
.hero { background: var(--brand-soft); border-radius: 24px; padding: 48px 24px; text-align: center; }
.hero h1 { font-size: clamp(28px, 6vw, 40px); margin: 0 0 12px; line-height: 1.3; }
.hero p { color: var(--muted); margin: 0 auto; max-width: 520px; }
.badge { display: inline-block; margin-top: 20px; padding: 6px 16px; border-radius: 999px; background: var(--brand); color: var(--bg); font-weight: 600; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 24px; margin-top: 24px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
.muted { color: var(--muted); font-size: 14px; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 14px; color: var(--muted); display: flex; gap: 16px; flex-wrap: wrap; }