:root{--primary: #7367f0;--primary-dark: #5e50ee;--primary-light: #8f85f3;--bg-color: #f8f9fa;--text-color: #333;--text-muted: #6c757d;--border-color: #e9ecef;--white: #ffffff;--success: #28c76f;--warning: #ff9f43;--danger: #ea5455}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}a{text-decoration:none;color:inherit}.header{background:var(--white);border-bottom:1px solid var(--border-color);padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.logo{display:flex;align-items:center;gap:12px;font-weight:600;font-size:16px;color:var(--text-color)}.logo-img{height:36px;width:auto;object-fit:contain}.header-right{display:flex;align-items:center;gap:16px}.search-container{position:relative;width:320px}.search-input{width:100%;padding:10px 16px 10px 40px;border:1px solid var(--border-color);border-radius:8px;font-size:14px;background:var(--bg-color);transition:all .2s}.search-input:focus{outline:none;border-color:var(--primary);background:var(--white);box-shadow:0 0 0 3px #7367f01a}.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.search-results{position:absolute;top:100%;left:0;right:0;background:var(--white);border:1px solid var(--border-color);border-radius:8px;margin-top:4px;max-height:400px;overflow-y:auto;box-shadow:0 4px 12px #0000001a;z-index:1000}.search-result-item{padding:12px 16px;border-bottom:1px solid var(--border-color);cursor:pointer;transition:background .2s}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--bg-color)}.search-result-item h4{font-size:14px;margin-bottom:4px;color:var(--text-color)}.search-result-item p{font-size:12px;color:var(--text-muted)}.lang-selector{display:flex;gap:4px;background:var(--bg-color);padding:4px;border-radius:8px}.lang-btn{padding:6px 12px;border:none;background:transparent;border-radius:6px;cursor:pointer;font-size:13px;font-weight:500;color:var(--text-muted);transition:all .2s}.lang-btn.active{background:var(--white);color:var(--primary);box-shadow:0 1px 3px #0000001a}.lang-btn:hover:not(.active){color:var(--text-color)}.layout{display:flex;min-height:calc(100vh - 64px)}.sidebar{width:260px;background:var(--white);border-right:1px solid var(--border-color);padding:24px 0;position:sticky;top:64px;height:calc(100vh - 64px);overflow-y:auto}.sidebar-section{margin-bottom:24px}.sidebar-title{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);padding:0 24px;margin-bottom:8px;font-weight:600}.sidebar-nav{list-style:none}.sidebar-nav li a{display:flex;align-items:center;gap:10px;padding:10px 24px;color:var(--text-color);font-size:14px;transition:all .2s;border-left:3px solid transparent}.sidebar-nav li a:hover{background:var(--bg-color);color:var(--primary)}.sidebar-nav li a.active{background:#7367f014;color:var(--primary);border-left-color:var(--primary);font-weight:500}.main-content{flex:1;padding:32px 48px}.hero{text-align:center;padding:48px 0}.hero h1{font-size:32px;margin-bottom:12px;color:var(--text-color)}.hero p{color:var(--text-muted);font-size:16px}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:32px}.category-card{background:var(--white);border:1px solid var(--border-color);border-radius:12px;padding:24px;transition:all .2s;cursor:pointer}.category-card:hover{border-color:var(--primary);box-shadow:0 4px 12px #7367f026;transform:translateY(-2px)}.category-icon{font-size:32px;margin-bottom:12px}.category-card h3{font-size:16px;margin-bottom:8px;color:var(--text-color)}.category-card p{font-size:13px;color:var(--text-muted)}.category-header{margin-bottom:32px}.category-header h1{font-size:28px;display:flex;align-items:center;gap:12px;margin-bottom:8px}.category-header p{color:var(--text-muted)}.articles-list{display:flex;flex-direction:column;gap:12px}.article-item{display:flex;align-items:flex-start;gap:16px;background:var(--white);border:1px solid var(--border-color);border-radius:10px;padding:20px;transition:all .2s}.article-item:hover{border-color:var(--primary);box-shadow:0 2px 8px #7367f01a}.article-item-icon{font-size:24px}.article-item-content h3{font-size:15px;margin-bottom:4px;color:var(--text-color)}.article-item-content p{font-size:13px;color:var(--text-muted)}.article{background:var(--white);border-radius:12px;padding:32px}.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:24px}.breadcrumb a{color:var(--primary)}.breadcrumb a:hover{text-decoration:underline}.article-header h1{font-size:28px;margin-bottom:12px;color:var(--text-color)}.article-meta{font-size:13px;color:var(--text-muted);margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border-color)}.article-content{font-size:15px;line-height:1.8}.article-content h2{font-size:20px;margin:32px 0 16px;color:var(--text-color)}.article-content p{margin-bottom:16px}.article-content ul,.article-content ol{margin:16px 0;padding-left:24px}.article-content li{margin-bottom:8px}.article-content code{background:var(--bg-color);padding:2px 6px;border-radius:4px;font-size:13px}.step{display:flex;gap:16px;margin:20px 0;padding:16px;background:var(--bg-color);border-radius:8px}.step-number{width:28px;height:28px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0}.step-content{flex:1}.step-content strong{display:block;margin-bottom:4px;color:var(--text-color)}.step-content p{margin:0;color:var(--text-muted);font-size:14px}.note{padding:16px;border-radius:8px;margin:20px 0;background:#7367f014;border-left:4px solid var(--primary)}.note.success{background:#28c76f14;border-left-color:var(--success)}.note.warning{background:#ff9f4314;border-left-color:var(--warning)}.note strong{color:var(--text-color)}.footer{text-align:center;padding:24px;color:var(--text-muted);font-size:13px;border-top:1px solid var(--border-color);margin-top:48px}@media(max-width:768px){.header{padding:0 16px}.search-container{width:200px}.sidebar{display:none}.main-content{padding:20px}.category-grid{grid-template-columns:1fr}}