* {
  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;
}
.author-section {
  padding: 8rem 0 4rem 0;
  text-align: center;
}
.author-section h1 {
  font-size: 2.5rem;
  background: linear-gradient(45deg, #58a6ff, #238636);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}
.author-section p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem auto;
  opacity: 0.95;
}
.author-section .author-name {
  font-size: 1.5rem;
  font-weight: bold;
  color: #58a6ff;
  margin-bottom: 0.5rem;
  display: block;
}
.author-section .author-links {
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.author-section .author-links a {
  color: #58a6ff;
  text-decoration: none;
  font-size: 1.1rem;
  transition: color 0.3s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.author-section .author-links a:hover {
  color: #238636;
}
.author-section .book-cover {
  width: 120px;
  border-radius: 8px;
  margin-bottom: 1rem;
  box-shadow: 0 4px 16px rgba(88,166,255,0.15);
}
.author-section .email {
  margin-top: 2rem;
  font-size: 1.1rem;
  color: #8b949e;
}
.author-section .email a {
  color: #58a6ff;
  text-decoration: none;
  transition: color 0.3s;
}
.author-section .email 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) {
  .author-section h1 {
    font-size: 2rem;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  .author-section .author-links {
    flex-direction: column;
    gap: 1rem;
  }
}