* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

header {
  padding: 80px 20px 60px;
  text-align: center;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 3px solid rgba(255, 255, 255, 0.3);
  margin: 0 auto 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  font-weight: 300;
}

h1 {
  font-size: 42px;
  font-weight: 300;
  letter-spacing: 4px;
  margin-bottom: 16px;
}

.tagline {
  font-size: 16px;
  opacity: 0.85;
  letter-spacing: 2px;
}

main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 16px;
  padding: 30px;
  margin-bottom: 24px;
}

h2 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 16px;
  border-left: 3px solid rgba(255, 255, 255, 0.6);
  padding-left: 12px;
}

p {
  font-size: 15px;
  opacity: 0.9;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.skills li {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
}

footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 13px;
  opacity: 0.8;
}

footer a {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.5);
  transition: opacity 0.2s;
}

footer a:hover {
  opacity: 0.7;
  border-bottom-style: solid;
}

@media (max-width: 600px) {
  h1 { font-size: 32px; }
  header { padding: 50px 20px 40px; }
  section { padding: 22px; }
}