* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #f7f9fc;
  color: #1f2937;
  line-height: 1.6;
}

header {
  background: #0f172a;
  color: white;
  padding: 18px 30px;
}

.navbar {
  max-width: 1100px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 18px;
  font-size: 15px;
}

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

.hero {
  max-width: 1100px;
  margin: 60px auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 30px;
  align-items: center;
  padding: 0 20px;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 15px;
  color: #0f172a;
}

.hero p {
  font-size: 18px;
  margin-bottom: 20px;
  color: #475569;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  background: #2563eb;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  margin-right: 10px;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: #1d4ed8;
}

.btn-outline {
  background: white;
  color: #2563eb;
  border: 1px solid #2563eb;
}

.section {
  max-width: 1100px;
  margin: 50px auto;
  padding: 0 20px;
}

.section h2 {
  font-size: 30px;
  margin-bottom: 18px;
  color: #0f172a;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.card {
  background: white;
  padding: 24px;
  border-radius: 14px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.06);
}

.card h3 {
  margin-bottom: 10px;
}

.price {
  font-size: 34px;
  font-weight: bold;
  color: #2563eb;
  margin: 15px 0;
}

ul.plan-list {
  list-style: none;
  margin: 15px 0;
}

ul.plan-list li {
  margin-bottom: 8px;
}

.page-header {
  max-width: 1100px;
  margin: 40px auto 20px;
  padding: 0 20px;
}

.page-header h1 {
  font-size: 36px;
  margin-bottom: 10px;
}

.content-box {
  max-width: 1100px;
  margin: 0 auto 50px;
  padding: 24px 20px;
  background: white;
  border-radius: 14px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.06);
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}

input, textarea, select {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 15px;
}

textarea {
  min-height: 120px;
}

footer {
  background: #0f172a;
  color: white;
  padding: 24px 20px;
  margin-top: 50px;
}

.footer-inner {
  max-width: 1100px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  color: white;
  text-decoration: none;
  margin-right: 16px;
  font-size: 14px;
}

.footer-links a:hover {
  text-decoration: underline;
}

.notice {
  background: #eff6ff;
  border-left: 4px solid #2563eb;
  padding: 12px 16px;
  margin-bottom: 18px;
  border-radius: 8px;
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 32px;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  nav a {
    margin: 0 12px 0 0;
  }
}