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

body {
  background: #f5f7fa;
  color: #333;
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: #fff;
  border-bottom: 1px solid #ddd;
  z-index: 1000;
}

.navbar-inner {
  max-width: 1200px;
  margin: auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

.logo {
  font-size: 1.4rem;
  font-weight: bold;
  color: #4f46e5;
}

/* CONTENT */
main {
  max-width: 1200px;
  margin: 100px auto 40px; /* leave space for fixed navbar */
  padding: 0 24px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 12px;
}

p {
  color: #555;
}

.error {
  color: red;
}

/* General content spacing */
main h1, main h2, main h3 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  line-height: 1.3;
}

main p {
  margin-bottom: 1em;
  line-height: 1.6; /* adds breathing room between lines */
}

main ul {
  margin-bottom: 1em;
  padding-left: 1.5em; /* indent bullet points */
}

main li {
  margin-bottom: 0.5em; /* space between list items */
}

/* Hero section */
.hero {
  text-align: center;
  margin: 60px 0;
  padding: 40px 24px;
  background: #f0f4ff;
  border-radius: 8px;
}

/* Buttons */
.btn-primary {
  display: inline-block;
  padding: 10px 20px;
  background-color: #4f46e5;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 16px;
}

.btn-primary:hover {
  background-color: #3730a3;
}

/* Services */
.service-grid {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.service-card {
  flex: 1 1 250px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

/* Advantages */
.advantages ul {
  padding-left: 1.5em;
  margin-top: 16px;
}

.advantages li {
  margin-bottom: 0.75em;
}

/* CTA section */
.cta {
  text-align: center;
  margin: 60px 0;
}