/* CSS Reset - 现代化重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #1d1d1f;
  background: linear-gradient(135deg, #e0e5ec 0%, #f5f7fa 50%, #d4dae3 100%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
}

/* iOS 18 毛玻璃效果 - 彩色光晕背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 15% 20%, rgba(0, 122, 255, 0.15), transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(52, 199, 89, 0.12), transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(255, 149, 0, 0.08), transparent 50%),
    radial-gradient(circle at 70% 20%, rgba(88, 86, 214, 0.1), transparent 40%);
  pointer-events: none;
  z-index: 0;
}

/* 确保内容在背景之上 */
body > * {
  position: relative;
  z-index: 1;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

input, select, textarea {
  font-family: inherit;
  outline: none;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}