/* index.html 样式 */
* {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}
body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  background: #1a1a2e;
  overflow: hidden;
}
a-waves {
  position: absolute;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
a-waves svg {
  width: 100%;
  height: 100%;
}
a-waves svg path {
  stroke: none;
  stroke-width: 0;
}
.title {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 108px;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  letter-spacing: 7.2px;
  margin: 0;
  user-select: none;
  z-index: 10;
}
.title .u-letter {
  color: #60c5f1;
}
.subtitle {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, 72px);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 21.6px;
  font-weight: 300;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  letter-spacing: 1.8px;
  margin: 0;
  user-select: none;
  z-index: 10;
  opacity: 0.9;
}
.buttons {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, 162px);
  display: flex;
  gap: 27px;
  z-index: 10;
}
/* 移动端适配 */
@media (max-width: 768px) {
  .title {
    font-size: 56px;
    letter-spacing: 4px;
  }
  .subtitle {
    font-size: 17px;
    letter-spacing: 1.2px;
    transform: translate(-50%, 60px);
    padding: 0 20px;
  }
  .buttons {
    flex-direction: column;
    gap: 18px;
    transform: translate(-50%, 130px);
    width: calc(100% - 40px);
    max-width: 350px;
  }
  .btn {
    padding: 15px 35px;
    font-size: 15px;
    width: 100%;
    text-align: center;
  }
  .footer {
    font-size: 12px;
    bottom: 20px;
    text-align: center;
    padding: 0 20px;
    line-height: 1.5;
  }
  .history-link {
    font-size: 11px;
    padding: 5px 14px;
    margin-top: 8px;
  }
}
@media (max-width: 480px) {
  .title {
    font-size: 42px;
    letter-spacing: 3px;
  }
  .subtitle {
    font-size: 15px;
    transform: translate(-50%, 55px);
  }
  .buttons {
    transform: translate(-50%, 115px);
  }
  .btn {
    padding: 14px 30px;
    font-size: 14px;
  }
  .history-link {
    font-size: 10px;
    padding: 5px 12px;
  }
}
.btn {
  padding: 14.4px 40.5px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 16.2px;
  font-weight: 500;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 50%, rgba(255, 255, 255, 0.05) 100%);
  pointer-events: none;
}
.btn:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
.btn:active {
  transform: translateY(0);
}
.footer {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 14px;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.6);
  z-index: 10;
  letter-spacing: 0.5px;
  text-align: center;
}
.footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.3s ease;
  font-weight: 400;
}
.footer a:hover {
  color: #ffffff;
}
.history-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 10px;
  padding: 6px 16px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  text-decoration: none;
  transition: all 0.3s ease;
  font-weight: 400;
  letter-spacing: 0.5px;
}
.history-link::before {
  content: '📦';
  font-size: 12px;
}
.history-link:hover {
  color: #60c5f1;
  background: rgba(96, 197, 241, 0.12);
  border-color: rgba(96, 197, 241, 0.25);
  transform: translateY(-2px);
}