/* 全局样式重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif; color: #1A1A1A; background: #F5F6F8; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* 颜色变量 */
:root {
  --primary: #ED7076;
  --primary-light: #F8D4D6;
  --primary-dark: #C4505A;
  --primary-darker: #A03D47;
  --secondary: #3B5B97;
  --bg-light: #F5F6F8;
  --bg-white: #FFFFFF;
  --bg-dark: #1A1A1A;
  --text-primary: #1A1A1A;
  --text-body: #444444;
  --text-secondary: #666666;
  --text-light: #999999;
  --border: #E8E8E8;
}

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航栏 */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  z-index: 1000; height: 64px;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.nav-logo { font-size: 20px; font-weight: 700; color: var(--primary); }
.nav-links { display: flex; gap: 32px; align-items: center; }
.nav-links a { color: #666; font-size: 15px; transition: color 0.3s; }
.nav-links a:hover { color: var(--primary); }
.nav-actions { display: flex; gap: 12px; align-items: center; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 24px; border-radius: 6px; font-size: 14px;
  font-weight: 500; cursor: pointer; transition: all 0.3s;
  border: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); }

/* Hero 区域 */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #fff 0%, #fff 50%, #fff5f5 100%);
  text-align: center;
}
.hero h1 { font-size: 48px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
.hero p { font-size: 18px; color: var(--text-secondary); margin-bottom: 32px; }
.hero .btn { padding: 14px 40px; font-size: 16px; }

/* 功能卡片 */
.section { padding: 80px 0; }
.section-title { text-align: center; font-size: 36px; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }
.section-subtitle { text-align: center; color: var(--text-secondary); font-size: 16px; margin-bottom: 48px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: #fff; border-radius: 12px; padding: 28px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.3s, box-shadow 0.3s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(237,112,118,0.15); }
.feature-icon { width: 48px; height: 48px; border-radius: 10px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; font-size: 24px; }
.feature-card h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--text-secondary); }

/* CTA 区域 */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0; text-align: center; color: #fff;
}
.cta-section h2 { font-size: 36px; font-weight: 700; margin-bottom: 16px; }
.cta-section p { font-size: 16px; opacity: 0.9; margin-bottom: 32px; }
.cta-section .btn { background: #fff; color: var(--primary); padding: 14px 40px; font-size: 16px; }
.cta-section .btn:hover { background: #f5f5f5; }

/* 页脚 */
.footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer a { display: block; color: rgba(255,255,255,0.6); font-size: 13px; margin-bottom: 10px; transition: color 0.3s; }
.footer a:hover { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; text-align: center; font-size: 13px; }

/* 响应式 */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-content { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .hero h1 { font-size: 32px; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}

/* 案例卡片 */
.case-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.case-img { height: 180px; background: linear-gradient(135deg, var(--primary-light), #fff); display: flex; align-items: center; justify-content: center; }
.case-img span { font-size: 48px; }
.case-body { padding: 24px; }
.case-tag { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 12px; padding: 2px 10px; border-radius: 20px; margin-bottom: 12px; }
.case-body h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.case-body p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }

/* 定价卡片 */
.price-card { background: #fff; border-radius: 16px; padding: 40px 32px; text-align: center; box-shadow: 0 4px 16px rgba(0,0,0,0.06); }
.price-card.featured { border: 2px solid var(--primary); transform: scale(1.05); }
.price-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.price-card .price { font-size: 40px; font-weight: 700; color: var(--primary); margin: 16px 0; }
.price-card .price span { font-size: 14px; color: var(--text-light); }
.price-features { text-align: left; margin: 24px 0; }
.price-features li { padding: 8px 0; color: var(--text-body); font-size: 14px; border-bottom: 1px solid var(--border); }