.markdown-container{max-width:800px;margin:0 auto;padding:40px 20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.7;color:#333;background:#fff;min-height:100vh}.markdown-nav{margin-bottom:40px;padding-bottom:20px;border-bottom:1px solid #e1e5e9}.markdown-nav a{color:#2d8cff;text-decoration:none;font-weight:500;display:inline-flex;align-items:center;transition:color .2s ease}.markdown-nav a:hover{color:#1769c7}.markdown-nav a:before{content:"←";margin-right:8px;font-size:16px}.markdown-content{max-width:none}.markdown-content h1{font-size:2.5rem;font-weight:700;color:#1a1a1a;margin:0 0 24px;line-height:1.2;border-bottom:3px solid #2d8cff;padding-bottom:16px}.markdown-content h2{font-size:1.8rem;font-weight:600;color:#2a2a2a;margin:48px 0 20px;line-height:1.3;position:relative}.markdown-content h2:before{content:"";position:absolute;left:-20px;top:0;bottom:0;width:4px;background:linear-gradient(135deg,#2d8cff,#1769c7);border-radius:2px}.markdown-content h3{font-size:1.4rem;font-weight:600;color:#3a3a3a;margin:32px 0 16px;line-height:1.4}.markdown-content p{font-size:1rem;margin:16px 0;color:#4a4a4a;text-align:justify}.markdown-content p:first-child{margin-top:0}.markdown-content strong{font-weight:600;color:#2a2a2a}.markdown-content ul{margin:16px 0;padding-left:0;list-style:none}.markdown-content li{position:relative;margin:12px 0;padding-left:32px;font-size:1rem;color:#4a4a4a;line-height:1.6}.markdown-content li:before{content:"▸";position:absolute;left:8px;color:#2d8cff;font-weight:700;font-size:1.1rem}.markdown-content ul ul{margin:8px 0}.markdown-content ul ul li{padding-left:24px;font-size:.95rem}.markdown-content ul ul li:before{content:"•";left:4px;font-size:1rem}.markdown-content p:first-of-type strong{display:inline-block;background:linear-gradient(135deg,#f8fbff,#e3f0ff);color:#2a4d7c;padding:8px 16px;border-radius:6px;border-left:4px solid #2d8cff;font-size:.9rem;margin:16px 0}.markdown-content a{color:#2d8cff;text-decoration:underline;-webkit-text-decoration-color:rgba(45,140,255,.3);text-decoration-color:rgba(45,140,255,.3);text-underline-offset:2px;transition:all .2s ease}.markdown-content a:hover{color:#1769c7;-webkit-text-decoration-color:#1769c7;text-decoration-color:#1769c7}.markdown-content a[href^="mailto:"]{background:#f8fbff;padding:4px 8px;border-radius:4px;text-decoration:none;border:1px solid #e3f0ff}.markdown-content a[href^="mailto:"]:hover{background:#e3f0ff;border-color:#2d8cff}.markdown-content p:contains("Article"),.markdown-content p:contains("第"){font-weight:500;margin-top:24px}@media (max-width:768px){.markdown-container{padding:20px 16px}.markdown-content h1{font-size:2rem}.markdown-content h2{font-size:1.5rem;margin:32px 0 16px}.markdown-content h2:before{left:-16px}.markdown-content h3{font-size:1.2rem}.markdown-content p{text-align:left}}@media print{.markdown-nav{display:none}.markdown-container{padding:0;max-width:none}.markdown-content h2:before{display:none}}