:root{--primary-color:#ff5722;--secondary-color:#ff9800;--text-primary:#212121;--text-secondary:#757575;--bg-primary:#ffffff;--bg-secondary:#f5f5f5;--border-color:#e0e0e0;--hover-bg:#fff3f0}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);font-size:16px}a{text-decoration:none;color:var(--primary-color);transition:color 0.2s ease}a:hover{color:var(--secondary-color)}header{background-color:var(--bg-primary);border-bottom:2px solid var(--primary-color);position:sticky;top:0;z-index:1000;box-shadow:0 2px 4px rgba(0,0,0,0.05)}nav{max-width:1200px;margin:0 auto;padding:0 20px}.logo{font-size:24px;font-weight:700;color:var(--primary-color);padding:16px 0;display:inline-block}.nav-menu{display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center;list-style:none;padding:12px 0;border-top:1px solid var(--border-color)}.nav-menu li{flex:1 1 0;min-width:0;text-align:center}.nav-menu a{display:block;padding:8px 12px;color:var(--text-primary);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-radius:4px;transition:all 0.2s ease}.nav-menu a:hover,.nav-menu a.active{background-color:var(--hover-bg);color:var(--primary-color)}.breadcrumb{max-width:1200px;margin:0 auto;padding:16px 20px;font-size:14px;color:var(--text-secondary)}.breadcrumb a{color:var(--text-secondary);margin-right:8px}.breadcrumb a:hover{color:var(--primary-color)}.breadcrumb span{margin:0 4px;color:var(--border-color)}main{max-width:1200px;margin:0 auto;padding:24px 20px}h1{font-size:28px;font-weight:700;margin-bottom:16px;color:var(--text-primary);line-height:1.3}h2{font-size:22px;font-weight:600;margin:32px 0 16px;color:var(--text-primary);position:relative;padding-left:12px}h2::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:20px;background-color:var(--primary-color);border-radius:2px}h3{font-size:18px;font-weight:600;margin:24px 0 12px;color:var(--text-primary)}p{margin-bottom:16px;line-height:1.8}section{margin-bottom:48px}.intro-section{background-color:var(--bg-secondary);padding:24px;border-radius:8px;margin-bottom:32px;border-left:4px solid var(--primary-color)}.intro-section p{color:var(--text-secondary);margin-bottom:12px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}.card{background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;padding:20px;transition:all 0.3s ease;position:relative;overflow:hidden}.card:hover{box-shadow:0 4px 12px rgba(255,87,34,0.15);transform:translateY(-2px);border-color:var(--primary-color)}.card-number{position:absolute;top:12px;right:12px;background-color:var(--primary-color);color:white;font-size:12px;font-weight:700;padding:4px 10px;border-radius:12px}.card-title{font-size:18px;font-weight:600;margin-bottom:12px;color:var(--text-primary);padding-right:60px}.card-title a{color:var(--text-primary)}.card-title a:hover{color:var(--primary-color)}.card-meta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px;font-size:13px;color:var(--text-secondary)}.card-meta span{display:inline-flex;align-items:center;background-color:var(--bg-secondary);padding:2px 8px;border-radius:4px}.card-oneline{font-size:14px;color:var(--text-secondary);margin-bottom:12px;line-height:1.6}.card-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:12px}.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.tag{display:inline-block;font-size:12px;color:var(--primary-color);background-color:var(--hover-bg);padding:4px 10px;border-radius:12px;border:1px solid var(--primary-color)}.detail-header{margin-bottom:24px;padding-bottom:24px;border-bottom:2px solid var(--border-color)}.detail-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin:24px 0;padding:20px;background-color:var(--bg-secondary);border-radius:8px}.meta-item{display:flex;flex-direction:column}.meta-label{font-size:13px;color:var(--text-secondary);margin-bottom:4px}.meta-value{font-size:15px;font-weight:600;color:var(--text-primary)}.content-block{margin-bottom:32px}.content-block h3{border-left:4px solid var(--primary-color);padding-left:12px}.review-box{background-color:var(--hover-bg);padding:20px;border-radius:8px;border-left:4px solid var(--secondary-color);font-style:italic;color:var(--text-secondary)}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}.related-item{padding:16px;background-color:var(--bg-secondary);border-radius:6px;border:1px solid var(--border-color);transition:all 0.2s ease}.related-item:hover{border-color:var(--primary-color);background-color:var(--hover-bg)}.related-item h4{font-size:16px;margin-bottom:8px}.related-item h4 a{color:var(--text-primary)}.related-item p{font-size:13px;color:var(--text-secondary);margin-bottom:0}.list-intro{background-color:var(--bg-secondary);padding:20px;border-radius:8px;margin-bottom:24px;border-left:4px solid var(--secondary-color)}.list-intro p{margin-bottom:8px;color:var(--text-secondary)}.list-intro ul{list-style:none;display:flex;flex-wrap:wrap;gap:16px;margin-top:12px}.list-intro ul li a{font-weight:600;color:var(--primary-color)}footer{background-color:var(--bg-secondary);border-top:1px solid var(--border-color);padding:24px 20px;margin-top:48px;text-align:center;color:var(--text-secondary);font-size:14px}.back-to-top{position:fixed;bottom:24px;right:24px;background-color:var(--primary-color);color:white;width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all 0.3s ease;box-shadow:0 4px 12px rgba(0,0,0,0.15);z-index:999}.back-to-top.visible{opacity:1;visibility:visible}.back-to-top:hover{background-color:var(--secondary-color);transform:translateY(-4px)}@media (max-width:768px){body{font-size:15px}h1{font-size:24px}h2{font-size:20px}.logo{font-size:20px;padding:12px 0}.nav-menu{padding:8px 0}.nav-menu a{padding:6px 8px;font-size:14px}.card-grid{grid-template-columns:1fr;gap:16px}.detail-meta{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr}main{padding:16px}.breadcrumb{padding:12px 16px;font-size:13px}}@media (max-width:480px){.logo{font-size:18px}h1{font-size:22px}.nav-menu a{font-size:13px;padding:6px 4px}.card{padding:16px}.card-title{font-size:16px;padding-right:50px}.card-number{font-size:11px;padding:3px 8px}}