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

/* Background */
body {
  font-family: 'Lora', serif;
  height: 100vh;
  background: url('bg.jpg') no-repeat center center/cover;
  color: white;
  overflow: hidden;
}

/* Dark overlay for readability */
.overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.55);
  z-index: 0;
}

/* Header */
header {
  position: absolute;
  top: 20px;
  left: 30px;
  display: flex;
  align-items: center;
  z-index: 1;
}

.logo {
  height: 32px;
  margin-right: 10px;
}

.site-name {
  font-family: 'Lato', sans-serif;
  font-size: 20px;
  letter-spacing: 0.5px;
}

/* Center content */
main {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 30px;   /* 👈 关键 */
}

.line {
  font-size: 15px;
  margin: 6px 0;
  line-height: 22px;
  opacity: 0;
  transform: translateY(10px);
  animation: fadeUp 1s ease forwards;
}

.line:nth-child(2) {
  animation-delay: 0.5s;
}

/* Animation */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}