/* 全局变量 */
:root {
  --primary-color: #ff7a00;
  --secondary-color: #3498db;
  --dark-color: #292f36;
  --light-color: #f7fff7;
  --glass-bg: rgba(255, 255, 255, 0.2);
  --glass-border: rgba(255, 255, 255, 0.3);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  --blur: blur(10px);
}

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

body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--dark-color);
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 10px;
}

section {
  padding: 80px 0;
  position: relative;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.2;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
  position: relative;
  color: var(--dark-color);
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: 2px;
}

.btn-primary {
  display: inline-block;
  padding: 12px 30px;
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 玻璃拟态卡片基础样式 */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-radius: 16px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow);
  padding: 30px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(31, 38, 135, 0.25);
}