/* 基础样式设置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: radial-gradient(circle at top left, #004AAD, #6F2EDB, transparent);
  color: #fff;
  font-family: 'Inter', 'Roboto', sans-serif;
  line-height: 1.6;
  padding: 20px;
}

/* 全屏沉浸式设计 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 15px;
}

/* 标题样式 */
h1, h2, h3, h4 {
  font-family: 'Exo', sans-serif;
  color: #FFC107;
  margin-bottom: 20px;
}

h1 {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 40px;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.75rem;
}

/* 段落样式 */
p {
  font-size: 1rem;
  margin-bottom: 20px;
  color: #E0E0E0;
}

/* 链接样式 */
a {
  color: #00E676;
  text-decoration: none;
  position: relative;
}

a:hover {
  color: #76FF03;
}

a::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #76FF03;
  transition: width 0.3s;
}

a:hover::after {
  width: 100%;
}

/* 图片样式 */
img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin-bottom: 20px;
}

/* 表格样式 */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

th, td {
  border: 1px solid #757575;
  padding: 10px;
  text-align: left;
}

th {
  background-color: #303F9F;
}

td {
  background-color: #424242;
}

/* 代码块样式 */
pre {
  background: #263238;
  padding: 15px;
  border-radius: 10px;
  overflow-x: auto;
  margin-bottom: 20px;
}

code {
  color: #00E5FF;
  font-family: 'Courier New', Courier, monospace;
}

/* 按钮样式 */
button {
  background: #00BCD4;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

button:hover {
  background: #0288D1;
}

button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300%;
  height: 300%;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.5s;
}

button:hover::after {
  transform: translate(-50%, -50%) scale(1);
}

/* 动画效果 */
@keyframes aurora-move {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

body {
  animation: aurora-move 15s linear infinite;
}

@keyframes flow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-50px, 50px); }
}

.particle {
  width: 10px;
  height: 10px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  animation: flow 8s infinite;
}

/* 响应式设计 */
@media (max-width: 1440px) {
  .container {
    padding: 30px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  h4 {
    font-size: 1.5rem;
  }
}

@media (max-width: 1200px) {
  .container {
    padding: 25px;
  }
}

@media (max-width: 1024px) {
  .container {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  h4 {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 15px;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  h4 {
    font-size: 1rem;
  }
}

@media (max-width: 320px) {
  body {
    padding: 10px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1rem;
  }

  h4 {
    font-size: 0.875rem;
  }
}

/* 内部链接nofollow属性 */
a[rel="nofollow"] {
  pointer-events: none;
  cursor: default;
}

/* 关键视觉元素 */
.visual-element {
  position: relative;
  overflow: hidden;
}

.visual-element::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
  background-size: cover;
  opacity: 0.3;
  animation: flow 10s infinite linear;
}

/* 微交互动画 */
.button-interaction {
  position: relative;
  overflow: hidden;
}

.button-interaction::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  opacity: 0;
  transition: opacity 0.3s;
}

.button-interaction:hover::after {
  opacity: 1;
}

/* 表格响应 */
table {
  width: 100%;
  overflow-x: auto;
}

/* 提示信息样式 */
.note {
  background: rgba(255, 235, 59, 0.2);
  padding: 15px;
  border-left: 5px solid #FFC107;
  margin-bottom: 20px;
  border-radius: 5px;
  color: #fff;
}

/* 最后修饰 */
.footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.875rem;
  color: #BDBDBD;
}