* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #f8fafc; color: #0f172a; line-height: 1.5; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航栏 */
.navbar { background: white; box-shadow: 0 1px 3px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.nav-flex { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { display: flex; align-items: center; gap: 8px; font-size: 1.4rem; font-weight: 700; text-decoration: none; background: linear-gradient(135deg, #2563eb, #7c3aed); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo-img { height: 32px; width: auto; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { text-decoration: none; color: #334155; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: #2563eb; }
.nav-actions { display: flex; gap: 12px; }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* 按钮 */
.btn-primary { background: #2563eb; color: white; padding: 10px 28px; border-radius: 40px; text-decoration: none; font-weight: 600; display: inline-block; transition: all 0.2s; border: none; cursor: pointer; }
.btn-primary:hover { background: #1d4ed8; transform: translateY(-2px); }
.btn-outline { background: transparent; color: #0f172a; padding: 10px 28px; border-radius: 40px; text-decoration: none; font-weight: 600; border: 1px solid #e2e8f0; display: inline-block; transition: all 0.2s; }
.btn-outline:hover { border-color: #2563eb; color: #2563eb; }
.btn-large { padding: 14px 36px; font-size: 1rem; }

/* Hero区域 */
.hero { padding: 80px 0; background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%); }
.hero-grid { display: flex; flex-wrap: wrap; align-items: center; gap: 50px; }
.hero-content { flex: 1; }
.hero-image { flex: 1; }
.hero-badge { display: inline-block; background: rgba(37,99,235,0.1); color: #2563eb; padding: 6px 12px; border-radius: 30px; font-size: 0.875rem; margin-bottom: 24px; }
h1 { font-size: 3rem; font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.gradient-text { background: linear-gradient(135deg, #2563eb, #7c3aed); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-desc { font-size: 1.125rem; color: #475569; margin-bottom: 30px; max-width: 500px; }
.hero-buttons { display: flex; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; }
.hero-stats strong { display: block; font-size: 1.5rem; }
.hero-stats span { font-size: 0.875rem; color: #64748b; }

/* 预览卡片 */
.preview-card { background: white; border-radius: 24px; padding: 24px; box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1); border: 1px solid #e2e8f0; }
.preview-header { font-weight: 600; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid #e2e8f0; }
.fingerprint-item { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid #e2e8f0; }
.dynamic { color: #10b981; font-size: 0.875rem; }

/* 功能区块 */
.features { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 { font-size: 2.2rem; margin-bottom: 12px; }
.section-header p { color: #64748b; font-size: 1.1rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.feature-card { background: white; border-radius: 20px; padding: 28px; border: 1px solid #e2e8f0; transition: transform 0.2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); }
.feature-icon { font-size: 2.2rem; margin-bottom: 16px; }
.feature-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.feature-card p { color: #64748b; line-height: 1.6; }

/* 统计区块 */
.stats { background: linear-gradient(135deg, #0f172a, #1e1b4b); padding: 60px 0; color: white; }
.stats-grid { display: flex; justify-content: space-around; text-align: center; flex-wrap: wrap; gap: 40px; }
.stat-number { font-size: 3rem; font-weight: 800; }
.stat-label { font-size: 1rem; opacity: 0.8; }

/* 使用步骤 */
.how-it-works { padding: 80px 0; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; text-align: center; }
.step-number { width: 60px; height: 60px; background: #2563eb; color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; margin: 0 auto 20px; }

/* 价格区块 */
.pricing { padding: 80px 0; background: white; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; max-width: 1000px; margin: 0 auto; }
.pricing-card { background: #f8fafc; border-radius: 24px; padding: 32px; text-align: center; position: relative; border: 1px solid #e2e8f0; }
.pricing-card.popular { background: white; border: 2px solid #2563eb; transform: scale(1.02); }
.popular-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: #f59e0b; color: white; padding: 4px 16px; border-radius: 20px; font-size: 0.75rem; }
.price { font-size: 2.5rem; font-weight: 800; margin: 16px 0; }
.price span { font-size: 1rem; font-weight: normal; color: #64748b; }
.pricing-card ul { list-style: none; margin-bottom: 24px; }
.pricing-card li { padding: 8px 0; color: #475569; }

/* 博客预览 */
.blog-preview { padding: 80px 0; background: #f8fafc; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.blog-card, .blog-post-item, .news-item { background: white; border-radius: 20px; padding: 24px; transition: transform 0.2s; border: 1px solid #e2e8f0; }
.blog-card:hover, .blog-post-item:hover { transform: translateY(-4px); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); }
.blog-card h3 { margin-bottom: 12px; }
.blog-card h3 a, .blog-post-item a { text-decoration: none; color: #0f172a; }
.blog-card h3 a:hover, .blog-post-item a:hover { color: #2563eb; }
.blog-card p, .blog-post-item p { color: #64748b; margin-bottom: 16px; line-height: 1.6; }
.read-more { color: #2563eb; text-decoration: none; font-weight: 500; }
.post-meta { font-size: 0.875rem; color: #94a3b8; margin-bottom: 12px; }

/* 下载页面 */
.download-hero { padding: 80px 0; text-align: center; background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%); }
.download-cards { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px; margin: 48px 0; }
.download-card { background: white; border-radius: 32px; padding: 40px; text-align: center; width: 280px; border: 1px solid #e2e8f0; transition: transform 0.2s; }
.download-card:hover { transform: translateY(-4px); }
.os-icon { font-size: 4rem; margin-bottom: 16px; }
.version { color: #64748b; margin-bottom: 20px; }
.version-note { font-size: 0.75rem; color: #94a3b8; margin-top: 12px; }
.system-req { background: white; border-radius: 24px; padding: 32px; max-width: 600px; margin: 40px auto; border: 1px solid #e2e8f0; text-align: left; }
.system-req ul { margin-left: 24px; color: #475569; }
.download-note { background: #f1f5f9; border-radius: 20px; padding: 20px; max-width: 600px; margin: 0 auto; }

/* 文章页面 */
.article-page { padding: 60px 0; }
.article-container { max-width: 800px; margin: 0 auto; }
.full-article { background: white; border-radius: 32px; padding: 48px; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.article-lead { font-size: 1.2rem; font-weight: 500; color: #1e293b; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 2px solid #e2e8f0; }
.full-article h2 { font-size: 1.5rem; margin: 32px 0 16px; padding-top: 8px; }
.full-article p { margin-bottom: 16px; color: #334155; line-height: 1.7; }
.full-article ul, .full-article ol { margin: 16px 0 16px 24px; color: #334155; }
.full-article li { margin: 8px 0; }
.article-cta { margin-top: 40px; padding-top: 24px; border-top: 1px solid #e2e8f0; display: flex; gap: 16px; flex-wrap: wrap; }

/* CTA区块 */
.cta { background: linear-gradient(135deg, #2563eb, #7c3aed); padding: 70px 0; text-align: center; color: white; }
.cta h2 { font-size: 2.2rem; margin-bottom: 16px; }
.cta p { margin-bottom: 32px; opacity: 0.9; }
.cta .btn-outline { background: transparent; border-color: white; color: white; }
.cta .btn-outline:hover { background: white; color: #2563eb; }

/* 页脚 */
.footer { background: #0f172a; color: #94a3b8; padding: 60px 0 30px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 40px; margin-bottom: 48px; }
.footer-logo { height: 32px; margin-bottom: 16px; }
.footer-links h4 { color: white; margin-bottom: 16px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: #94a3b8; text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: white; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid #1e293b; }

/* 响应式 */
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .nav-links, .nav-actions { display: none; }
    .mobile-menu-btn { display: block; }
    .hero-grid { flex-direction: column; }
    h1 { font-size: 2rem; }
    .section-header h2 { font-size: 1.8rem; }
    .features-grid, .pricing-grid { grid-template-columns: 1fr; }
    .full-article { padding: 24px; }
}