* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
  color: #c9d1d9;
  line-height: 1.6;
  min-height: 100vh;
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}
header {
  background: rgba(22, 27, 34, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid #30363d;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #58a6ff;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.nav-links a {
  color: #c9d1d9;
  text-decoration: none;
  transition: color 0.3s;
}
.nav-links a:hover {
  color: #58a6ff;
}
.about-section {
  padding: 8rem 0 4rem 0;
  text-align: center;
}
.about-section h1 {
  font-size: 2.8rem;
  color: #58a6ff;
  margin-bottom: 1.5rem;
}
.about-section p {
  font-size: 1.25rem;
  max-width: 700px;
  margin: 0 auto 2rem auto;
  opacity: 0.95;
}
.about-section .heart {
  color: #ff5a5f;
  font-size: 2rem;
  vertical-align: middle;
  margin: 0 0.3rem;
}
.about-section .author {
  margin-top: 2rem;
  font-size: 1.1rem;
  color: #8b949e;
}
.about-section .author a {
  color: #58a6ff;
  text-decoration: none;
  transition: color 0.3s;
}
.about-section .author a:hover {
  color: #238636;
}
footer {
  background: #0d1117;
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid #30363d;
  margin-top: 4rem;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.social-links {
  display: flex;
  gap: 1rem;
}
.social-links a {
  color: #6e7681;
  font-size: 1.5rem;
  transition: color 0.3s;
}
.social-links a:hover {
  color: #58a6ff;
}
@media (max-width: 768px) {
  .about-section h1 {
    font-size: 2rem;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}