/* 绿茶VPN官方网站样式表 - SEO优化 */
/* 全局重置与基础设置 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.8; background: #fff; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: #2d8c3c; transition: color 0.2s; }
a:hover { color: #1a6b25; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* 导航栏 */
.header { background: #fff; border-bottom: 1px solid #e8e8e8; position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 4px rgba(0,0,0,0.06); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 1.5rem; font-weight: 700; color: #1a6b25; letter-spacing: -0.5px; }
.logo:hover { color: #1a6b25; }
.nav { display: flex; gap: 24px; }
.nav a { color: #555; font-size: 0.95rem; font-weight: 500; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: #2d8c3c; border-bottom-color: #2d8c3c; }
.btn-download-header { background: #2d8c3c; color: #fff; padding: 8px 18px; border-radius: 6px; font-weight: 600; font-size: 0.9rem; white-space: nowrap; }
.btn-download-header:hover { background: #1a6b25; color: #fff; }

/* 主横幅 */
.hero { background: linear-gradient(135deg, #1a6b25 0%, #2d8c3c 50%, #3cb043 100%); color: #fff; padding: 80px 0 60px; text-align: center; }
.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 12px; letter-spacing: -1px; }
.hero-subtitle { font-size: 1.4rem; font-weight: 500; margin-bottom: 16px; opacity: 0.95; }
.hero-desc { font-size: 1.1rem; max-width: 700px; margin: 0 auto 30px; opacity: 0.9; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.btn-primary { display: inline-block; background: #fff; color: #1a6b25; padding: 14px 36px; border-radius: 8px; font-size: 1.05rem; font-weight: 700; transition: all 0.2s; box-shadow: 0 4px 15px rgba(0,0,0,0.15); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.2); color: #1a6b25; }
.btn-secondary { display: inline-block; background: rgba(255,255,255,0.15); color: #fff; padding: 14px 36px; border-radius: 8px; font-size: 1.05rem; font-weight: 600; border: 2px solid rgba(255,255,255,0.4); transition: all 0.2s; }
.btn-secondary:hover { background: rgba(255,255,255,0.25); color: #fff; transform: translateY(-2px); }
.hero-stats { display: flex; justify-content: center; gap: 50px; flex-wrap: wrap; }
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 2rem; font-weight: 800; }
.stat-label { display: block; font-size: 0.9rem; opacity: 0.85; margin-top: 4px; }

/* 通用区块 */
section { padding: 60px 0; }
section h2 { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 12px; color: #1a1a1a; }
.section-desc { text-align: center; color: #666; font-size: 1.05rem; max-width: 650px; margin: 0 auto 40px; }

/* 为什么选择 */
.why-us { background: #f9fafb; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; padding: 30px 24px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: transform 0.2s, box-shadow 0.2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; color: #1a6b25; }
.feature-card p { color: #666; font-size: 0.95rem; line-height: 1.8; }

/* 全球节点 */
.nodes { background: #fff; }
.regions-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.region-card { background: #f0faf3; padding: 24px; border-radius: 10px; border-left: 4px solid #2d8c3c; }
.region-card h3 { color: #1a6b25; margin-bottom: 8px; }
.region-card p { color: #555; font-size: 0.95rem; }

/* 使用步骤 */
.steps { background: #f9fafb; }
.steps-flow { display: flex; gap: 24px; }
.step-item { flex: 1; background: #fff; padding: 30px 24px; border-radius: 12px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.step-number { width: 50px; height: 50px; background: #2d8c3c; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; font-weight: 800; margin: 0 auto 16px; }
.step-item h3 { margin-bottom: 8px; color: #1a1a1a; }
.step-item p { color: #666; font-size: 0.95rem; margin-bottom: 12px; }
.step-item a { font-weight: 600; }

/* 用户评价 */
.testimonials { background: #fff; }
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testi-card { background: #f9fafb; padding: 28px 24px; border-radius: 12px; }
.testi-text { font-style: italic; color: #444; margin-bottom: 12px; font-size: 0.95rem; line-height: 1.8; }
.testi-author { color: #2d8c3c; font-weight: 600; font-size: 0.9rem; }

/* CTA */
.cta { background: linear-gradient(135deg, #1a6b25, #2d8c3c); color: #fff; text-align: center; padding: 60px 0; }
.cta h2 { color: #fff; margin-bottom: 8px; }
.cta p { margin-bottom: 24px; opacity: 0.9; font-size: 1.1rem; }

/* 页面横幅 */
.page-banner { background: linear-gradient(135deg, #1a6b25 0%, #2d8c3c 50%, #3cb043 100%); color: #fff; text-align: center; padding: 60px 0 40px; }
.page-banner h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 8px; }
.page-banner p { font-size: 1.1rem; opacity: 0.9; }

/* 功能详情 */
.feature-detail { background: #fff; }
.feature-block { margin-bottom: 40px; padding-bottom: 30px; border-bottom: 1px solid #eee; }
.feature-block:last-child { border-bottom: none; }
.feature-block h2 { text-align: left; font-size: 1.5rem; margin-bottom: 12px; color: #1a6b25; }
.feature-block p { color: #555; font-size: 1rem; line-height: 1.9; }

/* 套餐价格 */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.pricing-card { background: #fff; border: 1px solid #e8e8e8; border-radius: 12px; overflow: hidden; text-align: center; position: relative; transition: transform 0.2s, box-shadow 0.2s; }
.pricing-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.1); }
.pricing-recommend { border-color: #2d8c3c; box-shadow: 0 4px 20px rgba(45,140,60,0.15); }
.pricing-badge { position: absolute; top: 12px; right: 12px; background: #2d8c3c; color: #fff; padding: 4px 14px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; }
.pricing-header { padding: 30px 20px 20px; background: #f9fafb; }
.pricing-recommend .pricing-header { background: #f0faf3; }
.price { font-size: 2.8rem; font-weight: 800; color: #1a6b25; }
.currency { font-size: 1.2rem; vertical-align: super; }
.period { font-size: 0.95rem; color: #888; font-weight: 400; }
.pricing-desc { color: #888; font-size: 0.9rem; margin-top: 4px; }
.pricing-features { padding: 20px; }
.pricing-features li { padding: 8px 0; border-bottom: 1px solid #f0f0f0; color: #555; font-size: 0.95rem; }
.pricing-features li:last-child { border-bottom: none; }
.pricing-action { padding: 0 20px 30px; }
.pricing-action .btn-primary { background: #2d8c3c; color: #fff; }

/* 对比表格 */
.compare { background: #f9fafb; }
.compare-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.compare-table th, .compare-table td { padding: 14px 20px; text-align: center; border-bottom: 1px solid #eee; }
.compare-table th { background: #1a6b25; color: #fff; font-weight: 600; }
.compare-table th:first-child { text-align: left; }
.compare-table td:first-child { text-align: left; font-weight: 500; color: #333; }
.compare-table tr:nth-child(even) td { background: #fafafa; }
.compare-table tr:hover td { background: #f0faf3; }

/* FAQ */
.faq-nav { background: #f9fafb; padding: 30px 0; }
.faq-categories { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.faq-categories a { background: #fff; border: 1px solid #ddd; padding: 10px 20px; border-radius: 25px; font-weight: 500; color: #555; transition: all 0.2s; }
.faq-categories a:hover { background: #2d8c3c; color: #fff; border-color: #2d8c3c; }
.faq-category { padding: 40px 0; }
.faq-category:nth-child(even) { background: #f9fafb; }
.faq-category h2 { text-align: left; font-size: 1.6rem; color: #1a6b25; margin-bottom: 24px; padding-bottom: 10px; border-bottom: 2px solid #e8f5e9; }
.faq-item { margin-bottom: 30px; }
.faq-item h3 { font-size: 1.15rem; color: #333; margin-bottom: 12px; cursor: default; }
.faq-answer { color: #555; }
.faq-answer p { margin-bottom: 10px; line-height: 1.9; }
.faq-answer strong { color: #1a6b25; }
.faq-mini { background: #fff; }
.faq-mini .faq-item { margin-bottom: 24px; }
.faq-mini .btn-secondary { background: #2d8c3c; color: #fff; border: none; padding: 10px 24px; border-radius: 6px; margin-top: 10px; display: inline-block; }

/* 关于我们 */
.about-story p, .about-team p { color: #555; font-size: 1rem; line-height: 1.9; margin-bottom: 16px; }
.values-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.value-card { background: #f0faf3; padding: 24px; border-radius: 10px; }
.value-card h3 { color: #1a6b25; margin-bottom: 8px; }
.value-card p { color: #555; font-size: 0.95rem; }
.milestones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.milestone { background: #f9fafb; padding: 20px; border-radius: 10px; border-left: 3px solid #2d8c3c; }
.milestone h3 { color: #1a6b25; margin-bottom: 6px; }
.milestone p { color: #666; font-size: 0.9rem; line-height: 1.7; }

/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card { background: #f9fafb; padding: 30px 24px; border-radius: 12px; text-align: center; }
.contact-card h2 { font-size: 1.3rem; margin-bottom: 12px; }
.contact-card p { color: #555; margin-bottom: 8px; font-size: 0.95rem; line-height: 1.8; }
.contact-card .btn-primary { background: #2d8c3c; color: #fff; margin-top: 16px; padding: 10px 24px; font-size: 0.95rem; }
.contact-card .btn-secondary { background: #fff; color: #2d8c3c; border: 1px solid #2d8c3c; padding: 10px 24px; border-radius: 6px; margin-top: 16px; display: inline-block; font-size: 0.95rem; font-weight: 600; }
.contact-faq { background: #f9fafb; }
.contact-faq .faq-item { margin-bottom: 24px; }

/* 页脚 */
.footer { background: #1a1a1a; color: #aaa; padding: 48px 0 24px; }
.footer a { color: #aaa; }
.footer a:hover { color: #fff; }
.footer-cols { display: flex; gap: 60px; margin-bottom: 30px; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer-col a { display: block; margin-bottom: 8px; font-size: 0.9rem; }
.footer-bottom { border-top: 1px solid #333; padding-top: 20px; text-align: center; font-size: 0.85rem; }
.footer-bottom a { margin: 0 8px; }

/* Sitemap页面 */
.sitemap-section { padding: 40px 0; }
.sitemap-section h2 { margin-bottom: 20px; text-align: left; }
.sitemap-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.sitemap-links a { background: #f9fafb; padding: 12px 18px; border-radius: 8px; border: 1px solid #eee; display: block; color: #333; font-weight: 500; transition: all 0.2s; }
.sitemap-links a:hover { background: #f0faf3; border-color: #2d8c3c; color: #1a6b25; }

/* 响应式 */
@media (max-width: 768px) {
    .nav { display: none; }
    .hero h1 { font-size: 1.8rem; }
    .hero-stats { gap: 20px; }
    .features-grid, .regions-grid, .testi-grid, .pricing-grid, .steps-flow, .values-grid, .milestones, .contact-grid, .sitemap-links { grid-template-columns: 1fr; }
    .footer-cols { flex-direction: column; gap: 30px; }
    .btns { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 300px; text-align: center; }
}