/* RESET DASAR */
* {
  box-sizing: border-box;
}

/* BODY */
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background: #f7f9fc;
  color: #333;
}

/* HEADER */
header {
  text-align: center;
  padding: 20px 10px;
  background: #ffffff;
}

header img {
  width: 110px;
  height: auto;
  margin-bottom: 10px;
}

header h1 {
  font-size: 20px;
  margin: 8px 0;
  color: #0b3c5d;
}

header p {
  font-size: 14px;
  margin: 0;
  color: #555;
}

/* NAV MENU */
nav {
  background: #0b3c5d;
  text-align: center;
  padding: 10px 0;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  margin: 0 10px;
  font-weight: 600;
  font-size: 14px;
}

nav a:hover {
  text-decoration: underline;
}

/* CONTAINER */
.container {
  max-width: 900px;
  margin: auto;
  padding: 25px 18px;
  background: #ffffff;
}

/* SECTION */
section {
  margin-bottom: 40px;
}

h1 {
  font-size: 24px;
  color: #0b3c5d;
}

h2 {
  font-size: 20px;
  margin-top: 25px;
  color: #0b3c5d;
}

p {
  line-height: 1.7;
  font-size: 15px;
}

ul, ol {
  padding-left: 20px;
  font-size: 15px;
}

/* BUTTON DAFTAR */
.btn-daftar {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 24px;
  background-color: #0b3c5d;
  color: #ffffff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

.btn-daftar:hover {
  background-color: #094066;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px 15px;
  font-size: 14px;
  background: #eef1f6;
  color: #555;
  margin-top: 40px;
}

footer p {
  margin: 6px 0;
}

/* MOBILE OPTIMIZATION */
@media (max-width: 600px) {
  header img {
    width: 90px;
  }

  header h1 {
    font-size: 18px;
  }

  nav a {
    display: inline-block;
    margin: 6px 8px;
    font-size: 13px;
  }

  h1 {
    font-size: 22px;
  }

  h2 {
    font-size: 18px;
  }
}