:root{--bg-primary:#0d1117;--bg-secondary:#161b22;--border-color:#30363d;--text-primary:#e6edf3;--text-secondary:#7d8590;--accent-blue:#58a6ff;--accent-blue-hover:#79c0ff;--accent-primary:#1f6feb;--shadow-card:0 0 15px rgba(88,166,255,0.2);}*{margin:0;padding:0;box-sizing:border-box;}html{scroll-behavior:smooth;}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;font-size:16px;}nav{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,0.3);}nav ul{display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center;list-style:none;max-width:1400px;margin:0 auto;padding:1rem 1.5rem;}nav li{flex:1 1 0;min-width:0;text-align:center;}nav a{color:var(--accent-blue);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:block;padding:0.5rem 0.5rem;font-size:0.95rem;font-weight:500;transition:color 0.3s ease;}nav a:hover{color:var(--accent-blue-hover);}.breadcrumb{max-width:1400px;margin:0 auto;padding:1rem 1.5rem 0.5rem;font-size:0.85rem;color:var(--text-secondary);}.breadcrumb a{color:var(--accent-blue);text-decoration:none;transition:color 0.3s ease;}.breadcrumb a:hover{color:var(--accent-blue-hover);text-decoration:underline;}main{max-width:1400px;margin:0 auto;padding:2rem 1.5rem;}h1,h2,h3{font-weight:600;line-height:1.3;}h1{font-size:2rem;margin-bottom:1.5rem;color:var(--text-primary);}h2{font-size:1.5rem;margin-bottom:1rem;color:var(--accent-blue);}h3{font-size:1.2rem;margin-bottom:0.75rem;}p{margin-bottom:1rem;line-height:1.8;}a{color:var(--accent-blue);text-decoration:none;transition:color 0.3s ease;}a:hover{color:var(--accent-blue-hover);text-decoration:underline;}.card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;transition:all 0.3s ease;}.card:hover{border-color:var(--accent-blue);box-shadow:var(--shadow-card);transform:translateY(-2px);}.card h3{color:var(--accent-blue);margin-bottom:0.75rem;font-size:1.1rem;}.card-meta{color:var(--text-secondary);font-size:0.85rem;margin-bottom:0.75rem;}.card-tags{margin-top:0.75rem;}.tag{display:inline-block;background:var(--accent-primary);color:#fff;padding:0.25rem 0.75rem;border-radius:4px;font-size:0.8rem;margin-right:0.4rem;margin-bottom:0.4rem;font-weight:500;transition:all 0.3s ease;}.tag:hover{background:var(--accent-blue);transform:scale(1.05);}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;}.notice{background:var(--accent-primary);color:#fff;padding:1.25rem;border-radius:8px;margin-bottom:2rem;line-height:1.6;}.notice a{color:#fff;text-decoration:underline;font-weight:500;}.notice a:hover{color:#e6edf3;}section{margin-bottom:3rem;}.meta-box{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;margin-bottom:2rem;}.meta-item{margin-bottom:0.75rem;color:var(--text-secondary);line-height:1.6;}.meta-item strong{color:var(--text-primary);margin-right:0.5rem;font-weight:600;}@media (max-width:768px){nav ul{padding:0.75rem 0.5rem;}nav a{font-size:0.8rem;padding:0.4rem 0.25rem;}main{padding:1.5rem 1rem;}h1{font-size:1.6rem;}h2{font-size:1.3rem;}.card-grid{grid-template-columns:1fr;gap:1rem;}.breadcrumb{padding:1rem 1rem 0.5rem;}}@media (max-width:480px){h1{font-size:1.4rem;}.card{padding:1rem;}}