/* 绿茶VPN官网 - 全局样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.6; background: #f9fffe; }
a { text-decoration: none; color: inherit; }

/* 导航栏 */
.header { background: linear-gradient(135deg, #1a8a4a, #2ecc71); padding: 0 40px; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 12px rgba(0,0,0,0.1); }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { font-size: 24px; font-weight: bold; color: #fff; letter-spacing: 1px; }
.logo span { color: #c8f7c5; }
.nav { display: flex; gap: 6px; }
.nav a { color: #fff; padding: 8px 16px; border-radius: 6px; font-size: 15px; transition: background 0.2s; }
.nav a:hover, .nav a.active { background: rgba(255,255,255,0.2); }

/* 横幅 */
.hero { background: linear-gradient(135deg, #1a8a4a 0%, #2ecc71 50%, #27ae60 100%); color: #fff; text-align: center; padding: 80px 20px 90px; }
.hero h1 { font-size: 42px; margin-bottom: 18px; letter-spacing: 2px; }
.hero p { font-size: 18px; max-width: 680px; margin: 0 auto 36px; opacity: 0.92; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; padding: 14px 36px; border-radius: 8px; font-size: 16px; font-weight: bold; transition: transform 0.2s, box-shadow 0.2s; cursor: pointer; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.btn-primary { background: #fff; color: #1a8a4a; }
.btn-outline { border: 2px solid #fff; color: #fff; background: transparent; }
.btn-green { background: #2ecc71; color: #fff; }
.btn-green:hover { background: #27ae60; }

/* 通用容器 */
.container { max-width: 1200px; margin: 0 auto; padding: 60px 20px; }
.section-title { text-align: center; font-size: 32px; color: #1a8a4a; margin-bottom: 12px; }
.section-desc { text-align: center; color: #666; font-size: 16px; max-width: 600px; margin: 0 auto 48px; }

/* 特性卡片 */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; }
.feature-card { background: #fff; border-radius: 12px; padding: 36px 28px; text-align: center; box-shadow: 0 4px 16px rgba(0,0,0,0.06); transition: transform 0.2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.1); }
.feature-icon { font-size: 48px; margin-bottom: 18px; }
.feature-card h3 { font-size: 20px; color: #1a8a4a; margin-bottom: 12px; }
.feature-card p { color: #666; font-size: 14px; line-height: 1.8; }

/* 下载区域 */
.download-section { background: #fff; }
.download-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.download-card { border: 2px solid #e8f5e9; border-radius: 12px; padding: 32px 24px; text-align: center; transition: border-color 0.2s; }
.download-card:hover { border-color: #2ecc71; }
.download-card h3 { font-size: 22px; color: #1a8a4a; margin-bottom: 8px; }
.download-card .version { color: #999; font-size: 13px; margin-bottom: 18px; }
.download-card .btn { width: 100%; }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-category { margin-bottom: 40px; }
.faq-category h3 { font-size: 22px; color: #1a8a4a; border-left: 4px solid #2ecc71; padding-left: 14px; margin-bottom: 16px; }
.faq-item { background: #fff; border-radius: 10px; padding: 24px 28px; margin-bottom: 16px; box-shadow: 0 2px 10px rgba(0,0,0,0.04); }
.faq-item h4 { font-size: 17px; color: #333; margin-bottom: 14px; }
.faq-item ol { padding-left: 22px; }
.faq-item ol li { margin-bottom: 8px; color: #555; font-size: 14px; line-height: 1.8; }

/* 关于页面 */
.about-content { max-width: 860px; margin: 0 auto; }
.about-content h3 { font-size: 22px; color: #1a8a4a; margin: 32px 0 14px; }
.about-content p { color: #555; font-size: 15px; line-height: 2; margin-bottom: 14px; }
.about-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; margin: 40px 0; }
.stat-box { background: #fff; border-radius: 10px; padding: 28px; text-align: center; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.stat-box .num { font-size: 36px; font-weight: bold; color: #1a8a4a; }
.stat-box .label { font-size: 14px; color: #888; margin-top: 6px; }

/* 联系页面 */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 28px; max-width: 900px; margin: 0 auto; }
.contact-card { background: #fff; border-radius: 12px; padding: 36px 28px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,0.05); }
.contact-card .icon { font-size: 40px; margin-bottom: 14px; }
.contact-card h3 { font-size: 18px; color: #1a8a4a; margin-bottom: 10px; }
.contact-card p { color: #666; font-size: 14px; line-height: 1.8; }

/* 政策页面 */
.policy-content { max-width: 860px; margin: 0 auto; }
.policy-content h3 { font-size: 20px; color: #1a8a4a; margin: 28px 0 12px; }
.policy-content p, .policy-content li { color: #555; font-size: 14px; line-height: 2; margin-bottom: 10px; }
.policy-content ul, .policy-content ol { padding-left: 24px; }

/* 页脚 */
.footer { background: #1a2e1a; color: #aaa; padding: 40px 20px 24px; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; margin-bottom: 20px; }
.footer-links a { color: #ccc; font-size: 14px; transition: color 0.2s; }
.footer-links a:hover { color: #2ecc71; }
.footer-sitemap { text-align: center; margin-bottom: 16px; }
.footer-sitemap a { color: #2ecc71; font-size: 13px; }
.footer-copy { text-align: center; font-size: 13px; color: #777; }

/* 面包屑 */
.breadcrumb { background: #f0faf0; padding: 14px 20px; font-size: 13px; color: #888; }
.breadcrumb a { color: #1a8a4a; }
.breadcrumb span { margin: 0 6px; }

/* 响应式 */
@media (max-width: 768px) {
  .header { padding: 0 16px; }
  .header-inner { height: 60px; }
  .logo { font-size: 18px; }
  .nav a { padding: 6px 10px; font-size: 13px; }
  .hero { padding: 50px 16px 60px; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  .container { padding: 40px 16px; }
  .section-title { font-size: 24px; }
}