:root{--csl-primary:#2563eb;--csl-primary-hover:#1d4ed8;--csl-primary-soft:#eff6ff;--csl-bg:#f8fafc;--csl-card-bg:#ffffff;--csl-text-main:#0f172a;--csl-text-muted:#475569;--csl-text-light:#64748b;--csl-border:#e2e8f0;--csl-border-light:#f1f5f9;--csl-radius-sm:8px;--csl-radius-md:12px;--csl-radius-lg:16px;--csl-radius-xl:20px;--csl-shadow-xs:0 1px 2px rgba(15,23,42,0.04);--csl-shadow-sm:0 4px 6px -1px rgba(15,23,42,0.05);--csl-shadow-md:0 12px 24px -4px rgba(15,23,42,0.07)}.csl-tutorial-page{background:var(--csl-bg);color:var(--csl-text-main);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;padding:36px 0 80px}.csl-tutorial-layout{width:min(1320px,calc(100% - 48px));margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:36px;align-items:start}.csl-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;margin-bottom:16px;color:var(--csl-text-muted)}.csl-breadcrumb a{color:var(--csl-primary);text-decoration:none;font-weight:600}.csl-breadcrumb a:hover{text-decoration:underline}.csl-breadcrumb i{font-size:10px;color:var(--csl-text-light)}.csl-article-header{margin-bottom:24px}.csl-article-title{font-size:clamp(30px,3.4vw,44px);font-weight:850;line-height:1.12;letter-spacing:-0.035em;color:var(--csl-text-main);margin:0 0 14px}.csl-meta-pills{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.csl-meta-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;background:#ffffff;border:1px solid var(--csl-border);font-size:12px;font-weight:650;color:var(--csl-text-muted);box-shadow:var(--csl-shadow-xs)}.csl-meta-pill i{color:var(--csl-primary);font-size:11.5px}.csl-hero-wrapper{width:100%;max-height:420px;margin-bottom:28px;border-radius:var(--csl-radius-xl);overflow:hidden;background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);border:1px solid var(--csl-border);box-shadow:var(--csl-shadow-md);display:flex;align-items:center;justify-content:center}.csl-hero-wrapper img{width:100%;height:100%;max-height:420px;object-fit:contain;display:block}.csl-content-document{background:#ffffff;border:1px solid var(--csl-border);border-radius:var(--csl-radius-xl);padding:40px 48px;box-shadow:var(--csl-shadow-sm);font-size:16px;line-height:1.8;color:#334155;word-break:break-word}.csl-content-document h2{font-size:1.55rem;font-weight:800;color:var(--csl-text-main);margin:36px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--csl-border-light);letter-spacing:-0.02em;scroll-margin-top:90px}.csl-content-document h3{font-size:1.25rem;font-weight:750;color:var(--csl-text-main);margin:28px 0 10px;scroll-margin-top:90px}.csl-content-document p{margin:0 0 18px}.csl-content-document ul,.csl-content-document ol{margin:0 0 20px;padding-left:24px}.csl-content-document li{margin:6px 0}.csl-content-document a{color:var(--csl-primary);text-decoration:none;font-weight:600}.csl-content-document a:hover{text-decoration:underline}.csl-content-document img{max-width:100%;height:auto;border-radius:var(--csl-radius-md);border:1px solid var(--csl-border);margin:20px auto;display:block;box-shadow:var(--csl-shadow-xs)}.csl-content-document pre{position:relative;background:#090d16 !important;color:#e2e8f0 !important;-webkit-text-fill-color:#e2e8f0 !important;padding:18px 22px;border-radius:var(--csl-radius-md);border:1px solid #1e293b;overflow-x:auto;white-space:pre;word-break:normal;overflow-wrap:normal;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.7;margin:22px 0;box-shadow:0 8px 20px rgba(0,0,0,0.15)}.csl-content-document pre code{background:transparent !important;padding:0;color:#e2e8f0 !important;border:none;font-size:inherit;-webkit-text-fill-color:#e2e8f0 !important;opacity:1 !important}.csl-content-document pre code,.csl-content-document pre code *,.csl-content-document pre span,.csl-content-document pre div{color:#e2e8f0 !important;background:transparent !important;-webkit-text-fill-color:#e2e8f0 !important;text-shadow:none !important;opacity:1 !important}.csl-content-document:not(pre)>code{background:#eef2ff;color:#4338ca;padding:3px 6px;border-radius:6px;font-size:0.88em;font-weight:600;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.csl-copy-code-btn{position:absolute;top:10px;right:10px;padding:4px 9px;border-radius:6px;background:rgba(255,255,255,0.12);color:#94a3b8;border:1px solid rgba(255,255,255,0.15);font-size:11px;font-weight:600;cursor:pointer;transition:all 0.15s ease}.csl-copy-code-btn:hover{background:var(--csl-primary);color:#ffffff;border-color:var(--csl-primary)}.csl-content-document blockquote{margin:22px 0;padding:14px 20px;border-left:4px solid var(--csl-primary);background:var(--csl-primary-soft);border-radius:0 var(--csl-radius-md) var(--csl-radius-md) 0;color:#1e40af;font-size:14.5px}.csl-content-document table{width:100%;border-collapse:collapse;margin:24px 0;overflow-x:auto;display:block}.csl-content-document th,.csl-content-document td{padding:11px 14px;border:1px solid var(--csl-border);text-align:left;font-size:14px}.csl-content-document th{background:#f8fafc;font-weight:700;color:var(--csl-text-main)}.csl-hero-placeholder{min-height:220px;max-height:260px;flex-direction:column;gap:8px;color:#ffffff;text-align:center}.csl-hero-placeholder-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,0.10);border:1px solid rgba(255,255,255,0.15);font-size:26px;color:#60a5fa}.csl-hero-placeholder-title{font-size:18px;font-weight:800;letter-spacing:-0.02em}.csl-hero-placeholder-subtitle{font-size:11px;color:#94a3b8;letter-spacing:0.08em}.csl-share-bar{margin-top:32px;padding-top:24px;border-top:1px solid var(--csl-border);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}.csl-share-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.csl-share-label{font-size:13px;font-weight:700;color:var(--csl-text-muted);margin-right:4px}.csl-social-btn{width:36px;height:36px;border-radius:50%;background:#ffffff;border:1px solid var(--csl-border);color:#475569;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;cursor:pointer;transition:all 0.15s ease;box-shadow:var(--csl-shadow-xs)}.csl-social-btn:hover{color:var(--csl-primary);border-color:#bfdbfe;transform:translateY(-2px);box-shadow:var(--csl-shadow-sm)}.csl-download-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--csl-radius-md);background:linear-gradient(135deg,var(--csl-primary),#0284c7);color:#ffffff !important;font-size:13.5px;font-weight:700;text-decoration:none !important;box-shadow:0 4px 14px rgba(37,99,235,0.25);transition:all 0.15s ease}.csl-download-btn i,.csl-download-btn span{color:#ffffff !important}.csl-download-btn:hover{color:#ffffff !important;background:linear-gradient(135deg,var(--csl-primary-hover),#0369a1);transform:translateY(-1px);box-shadow:0 6px 18px rgba(37,99,235,0.35)}.csl-comments-card{margin-top:36px;background:#ffffff;border:1px solid var(--csl-border);border-radius:var(--csl-radius-xl);padding:36px;box-shadow:var(--csl-shadow-sm)}.csl-comments-card h3{margin:0 0 20px;font-size:1.25rem;font-weight:800;color:var(--csl-text-main)}.csl-comment-form{background:#f8fafc;border:1px solid var(--csl-border);border-radius:var(--csl-radius-lg);padding:22px;margin-bottom:32px}.csl-input-group{margin-bottom:14px}.csl-input-group label{display:block;font-size:12px;font-weight:700;color:var(--csl-text-main);margin-bottom:6px}.csl-input,.csl-textarea{width:100%;box-sizing:border-box;padding:10px 14px;border-radius:var(--csl-radius-sm);border:1px solid var(--csl-border);background:#ffffff;font-size:14px;color:var(--csl-text-main);outline:none;transition:all 0.15s ease}.csl-input:focus,.csl-textarea:focus{border-color:var(--csl-primary);box-shadow:0 0 0 3px rgba(37,99,235,0.12)}.csl-btn-submit{padding:10px 22px;border-radius:var(--csl-radius-md);background:var(--csl-primary);color:#ffffff;font-size:13.5px;font-weight:750;border:none;cursor:pointer;transition:background 0.15s ease}.csl-btn-submit:hover{background:var(--csl-primary-hover)}.csl-comment{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--csl-border-light)}.csl-comment-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--csl-primary),#7c3aed);color:#ffffff;font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.csl-comment-body{flex:1;min-width:0}.csl-comment-header{display:flex;align-items:center;gap:10px;margin-bottom:4px}.csl-comment-user{font-size:14px;font-weight:750;color:var(--csl-text-main)}.csl-comment-time{font-size:11.5px;color:var(--csl-text-light)}.csl-comment-text{font-size:14px;line-height:1.6;color:#334155;margin-bottom:8px}.csl-comment-actions{display:flex;align-items:center;gap:6px}.csl-action-btn{display:inline-flex;align-items:center;gap:5px;padding:5px 10px;border-radius:999px;background:transparent;border:none;color:var(--csl-text-muted);font-size:12.5px;cursor:pointer;transition:all 0.15s ease}.csl-action-btn:hover{background:#f1f5f9;color:var(--csl-text-main)}.csl-action-btn.like-btn:hover{color:var(--csl-primary)}.csl-action-btn.dislike-btn:hover{color:#ef4444}.csl-admin-badge-box{margin-top:10px;padding:10px 14px;border-left:3px solid var(--csl-primary);background:var(--csl-primary-soft);border-radius:0 var(--csl-radius-sm) var(--csl-radius-sm) 0;font-size:13px}.csl-admin-tag{font-weight:800;font-size:11.5px;color:var(--csl-primary);margin-bottom:3px}.csl-admin-badge-box p{margin:0;color:#1e40af}.csl-reply-input-box{margin-top:12px;padding:14px;background:#f8fafc;border-radius:var(--csl-radius-md);border:1px solid var(--csl-border)}.csl-reply-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}.csl-btn-sm{padding:6px 14px;border-radius:6px;background:var(--csl-primary);color:#ffffff;font-size:12px;font-weight:700;border:none;cursor:pointer}.csl-btn-text{padding:6px 12px;background:transparent;color:var(--csl-text-muted);font-size:12px;border:none;cursor:pointer}.csl-toggle-replies{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;margin-top:4px;background:transparent;border:none;color:var(--csl-primary);font-size:12.5px;font-weight:750;cursor:pointer}.csl-toggle-replies:hover{text-decoration:underline}.csl-sidebar-container{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}.csl-sidebar-box{background:#ffffff;border:1px solid var(--csl-border);border-radius:var(--csl-radius-lg);padding:20px;box-shadow:var(--csl-shadow-xs)}.csl-sidebar-box h3{margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--csl-border);font-size:15px;font-weight:800;color:var(--csl-text-main);display:flex;align-items:center;justify-content:space-between}.csl-toc-card{display:none}.csl-toc-card.has-items{display:block}.csl-toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.csl-toc-list a{display:block;padding:6px 10px;border-radius:6px;color:var(--csl-text-muted);font-size:13px;text-decoration:none;line-height:1.4;transition:all 0.15s ease}.csl-toc-list a:hover{background:var(--csl-primary-soft);color:var(--csl-primary)}.csl-toc-list .toc-sub-h3{padding-left:20px;font-size:12.5px}.csl-related-list{display:flex;flex-direction:column;gap:10px}.csl-related-card{display:flex;align-items:center;gap:12px;padding:8px;border-radius:var(--csl-radius-md);border:1px solid transparent;text-decoration:none;transition:all 0.15s ease}.csl-related-card:hover{background:#f8fafc;border-color:#e2e8f0;transform:translateX(2px)}.csl-related-thumb{width:48px;height:48px;border-radius:var(--csl-radius-sm);overflow:hidden;background:#e2e8f0;flex-shrink:0;display:flex;align-items:center;justify-content:center}.csl-related-thumb img{width:100%;height:100%;object-fit:cover}.csl-related-fallback{width:100%;height:100%;background:linear-gradient(135deg,var(--csl-primary-soft),#ede9fe);color:var(--csl-primary);font-weight:800;font-size:16px;display:flex;align-items:center;justify-content:center}.csl-related-info h4{margin:0;font-size:12.5px;line-height:1.4;font-weight:700;color:var(--csl-text-main);display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}.csl-service-callout{background:linear-gradient(135deg,#0f172a 0%,#1e293b 100%);border:1px solid #334155;color:#ffffff}.csl-service-callout h3{color:#ffffff;border-bottom:1px solid rgba(255,255,255,0.1)}.csl-service-callout p{margin:0 0 14px;font-size:12px;color:#94a3b8;line-height:1.5}.csl-service-btn{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:750;color:#38bdf8;text-decoration:none;transition:transform 0.15s ease}.csl-service-btn:hover{transform:translateX(3px);color:#7dd3fc}#_toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#0f172a;color:#ffffff;padding:10px 20px;border-radius:999px;font-size:13.5px;font-weight:600;z-index:99999;box-shadow:var(--csl-shadow-md);opacity:0;pointer-events:none;transition:opacity 0.25s ease}.csl-main-article{min-width:0;width:100%;max-width:100%}.csl-tutorial-layout{min-width:0}.csl-content-document,.csl-comments-card,.csl-hero-wrapper{min-width:0;max-width:100%;box-sizing:border-box}.csl-content-document pre{max-width:100%;box-sizing:border-box}.csl-content-document img,.csl-content-document video,.csl-content-document iframe{max-width:100%}@media (max-width:1024px){.csl-tutorial-layout{grid-template-columns:1fr}.csl-sidebar-container{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:20px}}@media (max-width:680px){.csl-tutorial-page{width:100%;max-width:100%;overflow-x:hidden;padding:22px 0 48px}.csl-tutorial-layout{display:grid;grid-template-columns:minmax(0,1fr);width:calc(100% - 24px);max-width:100%;margin:0 auto;gap:18px}.csl-breadcrumb{font-size:11.5px;gap:5px;margin-bottom:12px}.csl-breadcrumb span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:58vw}.csl-article-header{margin-bottom:16px}.csl-article-title{font-size:clamp(25px,7vw,32px);line-height:1.12;letter-spacing:-0.025em;margin-bottom:12px;overflow-wrap:anywhere}.csl-meta-pills{gap:6px}.csl-meta-pill{padding:5px 9px;font-size:11px}.csl-hero-wrapper{max-height:240px;margin-bottom:16px;border-radius:14px}.csl-hero-wrapper img{width:100%;height:auto;max-width:100%;max-height:240px;object-fit:contain}.csl-content-document{width:100%;padding:24px 18px;border-radius:14px;font-size:15px;line-height:1.75}.csl-content-document h2{font-size:1.32rem;margin:28px 0 12px}.csl-content-document h3{font-size:1.12rem;margin:22px 0 9px}.csl-content-document pre{width:100%;max-width:100%;padding:14px 14px;margin:18px 0;border-radius:10px;font-size:12px;line-height:1.6;overflow-x:auto;-webkit-overflow-scrolling:touch}.csl-copy-code-btn{top:8px;right:8px;padding:4px 8px;font-size:10.5px}.csl-sidebar-container{display:grid;grid-template-columns:minmax(0,1fr);width:100%;max-width:100%;gap:14px}.csl-sidebar-box{width:100%;box-sizing:border-box;padding:16px}.csl-comments-card{width:100%;box-sizing:border-box;padding:20px 16px;border-radius:14px}}