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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #ffffff;
  color: #000000;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0;
  position: relative;
}

.container {
  text-align: left;
  max-width: 500px;
  width: 62%;
}

h1 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.link-group {
  margin-bottom: 2.5rem;
}

.link-main {
  font-size: 1.75rem;
  color: #000000;
  text-decoration: none;
  font-weight: 300;
  display: block;
  margin-bottom: 0.25rem;
  transition: opacity 0.2s ease;
  position: relative;
}

.link-main:hover {
  opacity: 0.6;
}

/* 状态指示器样式 */
.link-main.with-status::before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
}

.link-main.available::before {
  background-color: #4CAF50;
  animation: pulse-green 2s infinite;
}

.link-main.unavailable::before {
  background-color: #f44336;
  animation: pulse-red 2s infinite;
}

.link-main.unavailable {
  text-decoration: line-through;
  opacity: 0.6;
}

/* 脉冲动画 */
@keyframes pulse-green {
  0% {
    box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7);
  }

  70% {
    box-shadow: 0 0 0 6px rgba(76, 175, 80, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(76, 175, 80, 0);
  }
}

@keyframes pulse-red {
  0% {
    box-shadow: 0 0 0 0 rgba(244, 67, 54, 0.7);
  }

  70% {
    box-shadow: 0 0 0 6px rgba(244, 67, 54, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(244, 67, 54, 0);
  }
}

.link-desc {
  font-size: 0.875rem;
  color: #666666;
}

.divider {
  width: 40px;
  height: 1px;
  background: #e5e5e5;
  margin: 2.5rem 0;
}

.alt-links {
  font-size: 0.875rem;
  line-height: 1.8;
}

.alt-links span {
  color: #999999;
}

.help-icon {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 1px solid #999999;
  border-radius: 50%;
  text-align: center;
  line-height: 12px;
  font-size: 10px;
  color: #999999;
  cursor: help;
  margin-left: 0px;
  position: relative;
  vertical-align: baseline;
  top: -1.5px;
}

.help-icon:hover {
  background-color: #f5f5f5;
  border-color: #666666;
  color: #666666;
}

.tooltip {
  position: absolute;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: white;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: 1000;
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: #333;
}

.help-icon:hover .tooltip {
  opacity: 1;
  visibility: visible;
}

.alt-link {
  color: #666666;
  text-decoration: none;
  border-bottom: 1px solid #e5e5e5;
  transition: all 0.2s ease;
}

.alt-link:hover {
  color: #000000;
  border-color: #000000;
}

/* Waves Styles */
.waves-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: -1;
}

.waves {
  position: relative;
  width: 100%;
  height: 15vh;
  margin-bottom: -7px;
  min-height: 100px;
  max-height: 150px;
}

/* Wave Animation */
.parallax>use {
  animation: move-forever 25s cubic-bezier(.55, .5, .45, .5) infinite;
}

.parallax>use:nth-child(1) {
  animation-delay: -2s;
  animation-duration: 7s;
}

.parallax>use:nth-child(2) {
  animation-delay: -3s;
  animation-duration: 10s;
}

.parallax>use:nth-child(3) {
  animation-delay: -4s;
  animation-duration: 13s;
}

.parallax>use:nth-child(4) {
  animation-delay: -5s;
  animation-duration: 20s;
}

@keyframes move-forever {
  0% {
    transform: translate3d(-90px, 0, 0);
  }

  100% {
    transform: translate3d(85px, 0, 0);
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
    margin-bottom: 2.5rem;
  }

  .link-main {
    font-size: 1.5rem;
  }

  .link-group {
    margin-bottom: 2rem;
  }

  .link-main.with-status::before {
    left: -16px;
    width: 6px;
    height: 6px;
  }

  .waves {
    height: 40px;
    min-height: 40px;
  }
}