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

body {
  font-family: 'Segoe UI', Roboto, sans-serif;
  background: #080818;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(90, 20, 180, 0.2) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(30, 180, 255, 0.2) 0%, transparent 40%);
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 20px;
}

.header {
  text-align: center;
  margin-bottom: 50px;
  animation: fadeIn 1s ease;
}

.logo {
  font-size: 52px;
  font-weight: 900;
  background: linear-gradient(90deg, #6a11cb, #2575fc, #00f2fe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 10px;
}

.sub-title {
  font-size: 18px;
  color: #aaa;
}

.card {
  background: rgba(20, 22, 40, 0.8);
  border-radius: 20px;
  padding: 40px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 10px 60px rgba(0,0,0,0.4);
  margin-bottom: 40px;
  animation: fadeUp 1.2s ease;
}

.card h2 {
  font-size: 26px;
  margin-bottom: 20px;
  color: #00f2fe;
}

.card p {
  color: #ccc;
  line-height: 1.7;
  margin-bottom: 15px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.feature {
  background: rgba(255,255,255,0.05);
  padding: 15px;
  border-radius: 12px;
  border-left: 3px solid #2575fc;
}

.feature strong {
  color: #fff;
}

.download-card {
  text-align: center;
  padding: 50px 30px;
  animation: fadeUp 1.4s ease;
}

.version-info {
  color: #aaa;
  margin-bottom: 25px;
  font-size: 15px;
}

.download-btn {
  display: inline-block;
  padding: 18px 50px;
  border-radius: 100px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  background: linear-gradient(90deg, #6a11cb, #2575fc);
  color: #fff;
  box-shadow: 0 8px 30px rgba(106,17,203,0.4);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(106,17,203,0.6);
}

.download-btn:active {
  transform: translateY(0);
}

.tip {
  margin-top: 20px;
  color: #888;
  font-size: 14px;
}

.footer {
  text-align: center;
  color: #666;
  font-size: 13px;
  padding: 20px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}