/* Reset-ish */
*
{
  box-sizing: border-box;
}

body
{
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
  background: #f9fbfb;
  color: #333;
}

/* Header */
header
{
  background: #4d858d;
  color: white;
  padding: 20px 20px 10px;
  text-align: center;
}

.header-inner
{
  max-width: 1000px;
  margin: 0 auto;
}

/* Logo block */

.logo
{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.logo img
{
  max-width: 240px;
  width: 100%;
  height: auto;
}

.logo span
{
  font-size: 1.4em;
  font-weight: bold;
}

/* Navigation */
nav
{
  margin-top: 15px;
}

nav a
{
  color: white;
  margin: 0 12px;
  text-decoration: none;
  font-weight: 500;
}

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

/* Hero */
.hero
{
  background: #e8f2f3;
  padding: 50px 20px;
  text-align: center;
}

.hero h2
{
  font-size: 1.8em;
  margin-top: 0;
}

.button
{
  display: inline-block;
  margin-top: 20px;
  padding: 12px 22px;
  background: #4d858d;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

.button:hover
{
  background: #3a6b72;
}

/* Content */
.content
{
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
}

h1, h2, h3
{
  line-height: 1.3;
}

/* Footer */
footer
{
  background: #4d858d;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
}

/* Accessibility helper */
.visually-hidden
{
  position: absolute;
  left: -9999px;
}

/* Mobile tweaks */
@media (max-width: 600px)
{
  body
  {
    font-size: 17px;
  }

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

  nav
  {
    width: 100%;
    margin-top: 10px;
  }

  nav a
  {
    display: inline-block;
    margin: 8px 8px;
  }

  .logo img
  {
    max-width: 220px;
  }

  .hero h2
  {
    font-size: 1.5em;
  }
}