:root {
  --brand: #0f6e5c;
  --brand-dark: #0a5446;
  --ink: #1f2933;
  --muted: #52606d;
  --bg: #f5f7f6;
  --card: #ffffff;
  --line: #e1e7e4;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Sarabun", "Noto Sans Thai", Tahoma, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}
a { color: var(--brand); }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand img { border-radius: 8px; }
nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
nav a { text-decoration: none; color: var(--muted); }
.btn {
  display: inline-block; background: var(--brand); color: #fff !important; text-decoration: none;
  padding: 12px 24px; border-radius: 10px; font-weight: 700; margin: 4px 8px 4px 0;
}
.btn:hover { background: var(--brand-dark); }
.btn.small { padding: 8px 16px; }
.btn.ghost { background: transparent; color: var(--brand) !important; border: 2px solid var(--brand); }
.hero { background: linear-gradient(160deg, #0f6e5c, #0a3f36); color: #fff; padding: 72px 0 64px; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.3; margin: 0 0 16px; }
.hero .lead { font-size: 18px; max-width: 680px; opacity: .92; }
.hero .btn { background: #fff; color: var(--brand) !important; }
.hero .btn.ghost { background: transparent; color: #fff !important; border-color: #fff; }
section.wrap { padding: 48px 20px 8px; }
h2 { font-size: 28px; margin: 0 0 20px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); max-width: 720px; }
article { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
article h3 { margin: 0 0 6px; color: var(--brand); }
article p { margin: 0; color: var(--muted); }
.security ul { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px 20px 20px 40px; }
.plan .price { font-size: 36px; font-weight: 700; color: var(--ink); margin: 4px 0 8px; }
.plan .price span { font-size: 16px; font-weight: 400; color: var(--muted); }
.plan ul { padding-left: 20px; color: var(--muted); }
.plan.featured { border: 2px solid var(--brand); }
.note { color: var(--muted); font-size: 14px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; }
.foot { margin-top: 56px; padding: 28px 0; background: #e9eeec; color: var(--muted); font-size: 14px; }
.disclaimer { font-size: 13px; }
.badge {
  display: inline-block; vertical-align: middle; margin-left: 6px;
  font-size: 12px; font-weight: 700; letter-spacing: .02em;
  color: #7a4b00; background: #fff1d6; border: 1px solid #f3cf8a;
  padding: 1px 8px; border-radius: 999px;
}