/* Fresh Modern CSS - Element Only */
html {
  box-sizing: border-box;
  font-size: 17px;
  background: #f0f4f8;
  color: #222b3a;
}
*, *:before, *:after {
  box-sizing: inherit;
}
body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  background: transparent;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

header {
  background: #fff;
  color: #2d3a4a;
  padding: 1rem 0;
  border-bottom: 1px solid #e5e9f2;
  box-shadow: 0 2px 8px 0 rgba(60,80,120,0.04);
}

header div {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
}

header h1 a {
  color: #2d3a4a;
  text-decoration: none;
}

header nav {
  display: flex;
  gap: 1.5rem;
}

header nav a {
  color: #2d3a4a;
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: background 0.2s;
}

header nav a:hover, header nav a:focus {
  background: #e5e9f2;
  color: #0077cc;
}

footer {
  background: #fff;
  color: #2d3a4a;
  padding: 1.5rem 0 1.2rem 0;
  text-align: center;
  border-top: 1px solid #e5e9f2;
  border-radius: 1.5rem 1.5rem 0 0;
  margin-top: 2.5rem;
  font-size: 1rem;
  padding-bottom: 2rem;
  box-shadow: 0 -2px 8px 0 rgba(60,80,120,0.04);
}

main {
  max-width: 900px;
  margin: 2rem auto 0 auto;
  padding: 2rem 1.5rem;
  background: #fafdff;
  border-radius: 1.5rem;
  box-shadow: 0 4px 24px 0 rgba(60,80,120,0.06);
}

section {
  margin-bottom: 2rem;
}

h1 {
  font-size: 2.1rem;
  font-weight: 700;
  margin: 0 0 1.1rem 0;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: #1a2233;
}
h2 {
  font-size: 1.45rem;
  font-weight: 600;
  margin: 1.7rem 0 0.9rem 0;
  line-height: 1.2;
  color: #25304a;
}
h3 {
  font-size: 1.15rem;
  font-weight: 500;
  margin: 1.2rem 0 0.6rem 0;
  color: #2d3a4a;
}
h4 {
  font-size: 1.02rem;
  font-weight: 500;
  margin: 1rem 0 0.4rem 0;
  color: #3a4660;
}
h5 {
  font-size: 0.95rem;
  font-weight: 500;
  margin: 0.8rem 0 0.4rem 0;
  color: #4a5670;
}

p {
  margin: 0 0 1rem 0;
  color: #384150;
  font-size: 1.04rem;
}

i {
  color: #7b8794;
  font-style: italic;
}

a {
  color: #0077cc;
  text-decoration: underline;
  transition: color 0.2s;
}
a:hover, a:focus {
  color: #005fa3;
  text-decoration: none;
}

ul, ol {
  margin: 1rem 0 1.2rem 2rem;
  padding: 0;
}
li {
  margin-bottom: 0.4rem;
}

img {
  max-width: 100%;
  border-radius: 0.5rem;
  display: block;
  margin: 1.2rem 0;
  box-shadow: 0 1px 4px 0 rgba(60,80,120,0.07);
}