.tutorial-page{--tp-bg-primary:#ffffff;--tp-bg-secondary:#fafafa;--tp-bg-tertiary:#f5f5f5;--tp-text-primary:#1a1a1a;--tp-text-secondary:#6b7280;--tp-text-tertiary:#9ca3af;--tp-accent:#3498db;--tp-accent-soft:rgba(52, 152, 219, 0.06);--tp-accent-hover:#2980b9;--tp-border:#e5e7eb;--tp-border-light:#f3f4f6;--tp-radius-sm:4px;--tp-radius-md:6px;--tp-radius-lg:8px;--tp-radius-xl:12px;--tp-shadow-sm:0 1px 2px rgba(0, 0, 0, 0.04);--tp-shadow-md:0 2px 4px rgba(0, 0, 0, 0.06);--tp-transition:0.15s ease}[data-theme=dark] .tutorial-page{--tp-bg-primary:#191919;--tp-bg-secondary:#1e1e1e;--tp-bg-tertiary:#262626;--tp-text-primary:#ededed;--tp-text-secondary:#a1a1a1;--tp-text-tertiary:#6b7280;--tp-accent:#5dade2;--tp-accent-soft:rgba(93, 173, 226, 0.08);--tp-accent-hover:#3498db;--tp-border:#2e2e2e;--tp-border-light:#262626;--tp-shadow-sm:0 1px 2px rgba(0, 0, 0, 0.2);--tp-shadow-md:0 2px 4px rgba(0, 0, 0, 0.3)}.reading-progress{position:fixed;top:0;left:0;width:0%;height:2px;background:var(--tp-accent);z-index:9999;transition:width .1s ease-out}.tutorial-header,.tutorial-page{background:var(--tp-bg-primary);color:var(--tp-text-primary)}.tutorial-page{min-height:100vh;overflow-x:hidden}.tutorial-header{padding:2.5rem 0 2rem;margin-bottom:0;border-bottom:1px solid var(--tp-border)}.sidebar-card::before,.sidebar-card:hover::before,.tutorial-content h2::before,.tutorial-content h3::before,.tutorial-content pre::before,.tutorial-content::before,.tutorial-header::after,.tutorial-header::before{display:none}.tutorial-header .container{position:relative;z-index:1;max-width:1200px;width:100%;margin:0 auto;padding:0 1.5rem;box-sizing:border-box;overflow-wrap:break-word;word-break:break-word}.tutorial-breadcrumb{margin-bottom:1.25rem;font-size:.8125rem;color:var(--tp-text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tutorial-breadcrumb a{color:var(--tp-text-tertiary);text-decoration:none;transition:color var(--tp-transition)}.tutorial-breadcrumb a:hover{color:var(--tp-accent)}.tutorial-breadcrumb span[aria-current]{color:var(--tp-text-secondary)}.tutorial-meta-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.tutorial-category-badge{display:inline-flex;align-items:center;gap:.5rem;background:var(--tp-accent-soft);padding:.375rem .75rem;border-radius:var(--tp-radius-md);font-size:.8125rem;font-weight:600;color:var(--tp-accent);border:0;box-shadow:none;backdrop-filter:none;text-shadow:none;transition:background var(--tp-transition)}.tutorial-category-badge:hover{background:rgba(52,152,219,.1);transform:none;box-shadow:none}.tutorial-difficulty{display:flex;align-items:center;gap:.375rem;font-size:.8125rem;font-weight:500;color:var(--tp-text-secondary)}.difficulty-dot{width:8px;height:8px;border-radius:50%;background:var(--tp-border);transition:background var(--tp-transition)}.difficulty-dot.active{background:var(--tp-accent);box-shadow:none;transform:none}.difficulty-label{font-size:.8125rem;font-weight:500;color:var(--tp-text-secondary)}.bookmark-btn,.tutorial-date,.tutorial-reading-time{display:inline-flex;align-items:center;gap:.375rem;color:var(--tp-text-tertiary);font-size:.8125rem}.tutorial-content h2,.tutorial-header h1{color:var(--tp-text-primary);font-weight:700}.tutorial-header h1{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:.5rem;line-height:1.3;text-shadow:none;letter-spacing:-.02em}.tutorial-header .tutorial-intro,.tutorial-header p{font-size:1rem;color:var(--tp-text-secondary);line-height:1.6;max-width:680px}.bookmark-btn{gap:.5rem;padding:.5rem 1rem;background:0 0;border:1px solid var(--tp-border);color:var(--tp-text-secondary);border-radius:var(--tp-radius-md);cursor:pointer;font-weight:500;transition:all var(--tp-transition);margin-top:1rem}.bookmark-btn:hover{border-color:var(--tp-accent);color:var(--tp-accent);background:var(--tp-accent-soft)}.bookmark-btn.saved{background:var(--tp-accent);color:#fff;border-color:var(--tp-accent)}.bookmark-btn.saved i{font-weight:900}.tutorial-main{padding:2rem 0 4rem}.tutorial-container{max-width:1200px;margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:3rem;align-items:start}.back-to-tutorials,.tutorial-content{background:0 0;border:0;border-radius:0;padding:0}.back-to-tutorials{display:inline-flex;align-items:center;gap:.375rem;color:var(--tp-text-tertiary);text-decoration:none;font-weight:500;font-size:.8125rem;margin-bottom:2rem;transition:color var(--tp-transition)}.back-to-tutorials:hover{color:var(--tp-accent);background:0 0;border-color:transparent;transform:none}.tutorial-content{box-shadow:none;backdrop-filter:none;animation:none;overflow-wrap:break-word;word-break:break-word;min-width:0}.tutorial-content h2{font-size:1.5rem;margin:2.5rem 0 1rem;padding-bottom:.5rem;border-bottom:1px solid var(--tp-border);letter-spacing:-.01em}.tutorial-content h2:first-of-type{margin-top:0}.tutorial-content h3{font-size:1.25rem;margin:2rem 0 .75rem;padding-left:0;letter-spacing:-.01em}.tutorial-content h4{font-size:1.0625rem;margin:1.5rem 0 .5rem}.alert p,.tutorial-content p{color:var(--tp-text-secondary)}.tutorial-content p{line-height:1.75;margin-bottom:1.25rem;font-size:.9375rem}.tutorial-content ol,.tutorial-content ul{margin:1.25rem 0;padding-left:1.5rem;color:var(--tp-text-secondary)}.tutorial-content li{margin-bottom:.5rem;line-height:1.65;font-size:.9375rem}.tutorial-content h3,.tutorial-content h4,.tutorial-content li strong{color:var(--tp-text-primary);font-weight:600}.tutorial-content a{color:var(--tp-accent);text-decoration:underline;text-decoration-color:rgba(52,152,219,.3);text-underline-offset:2px;transition:text-decoration-color var(--tp-transition)}.tutorial-content a:hover{text-decoration-color:var(--tp-accent)}.tutorial-content pre{background:var(--tp-bg-tertiary);border:1px solid var(--tp-border);border-radius:var(--tp-radius-lg);padding:1.25rem;overflow-x:auto;position:relative}.tutorial-content code{font-family:"Fira Code","Monaco","Consolas",monospace;font-size:.8125rem;line-height:1.6;color:var(--tp-text-primary)}.tutorial-content li code,.tutorial-content p code{background:var(--tp-bg-tertiary);padding:.125rem .375rem;border-radius:var(--tp-radius-sm);border:0;font-size:.8125rem;color:var(--tp-accent);font-weight:500}.copy-code-btn{position:absolute;top:.5rem;right:.5rem;background:var(--tp-bg-secondary);color:var(--tp-text-tertiary);border:1px solid var(--tp-border);padding:.375rem .5rem;border-radius:var(--tp-radius-sm);cursor:pointer;font-size:.75rem;opacity:0;transition:all var(--tp-transition);z-index:10}.tutorial-content pre:hover .copy-code-btn{opacity:1}.copy-code-btn:hover{background:var(--tp-accent);color:#fff;border-color:var(--tp-accent)}.copy-code-btn.copied{background:#2ecc71;color:#fff;border-color:#2ecc71;opacity:1}.copy-code-btn.error{background:#e74c3c;color:#fff;border-color:#e74c3c;opacity:1}.alert,.tutorial-content pre{margin:1.5rem 0;box-shadow:none}.alert{padding:1rem 1.25rem;border-radius:var(--tp-radius-md);border-left:3px solid;backdrop-filter:none;transition:none;background:0 0}.alert:hover{transform:none;box-shadow:none}.alert-info,.alert-success{color:var(--tp-text-primary)}.alert-info{border-left-color:#3498db;background:rgba(52,152,219,.04)}.alert-success{border-left-color:#2ecc71;background:rgba(46,204,113,.04)}.alert-warning{border-left-color:#f1c40f;background:rgba(241,196,15,.04);color:var(--tp-text-primary)}.alert-danger{border-left-color:#e74c3c;background:rgba(231,76,60,.04);color:var(--tp-text-primary)}.alert strong{font-weight:600;display:flex;align-items:center;gap:.375rem;margin-bottom:.25rem;font-size:.875rem}.alert i{font-size:1rem}.alert p{font-size:.875rem;line-height:1.6;margin:0}.tutorial-sidebar{position:sticky;top:2rem;height:fit-content}.sidebar-card{background:0 0;border:0;border-radius:0;padding:0 0 1.5rem;margin-bottom:1.5rem;box-shadow:none;backdrop-filter:none;border-bottom:1px solid var(--tp-border);animation:none}.sidebar-card:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.sidebar-card:hover{box-shadow:none;transform:none}.sidebar-title{display:flex;align-items:center;gap:.375rem;font-size:.6875rem;font-weight:600;color:var(--tp-text-tertiary);margin-bottom:.75rem;padding-bottom:0;border-bottom:none;text-transform:uppercase;letter-spacing:.05em}.sidebar-title i{color:var(--tp-text-tertiary);font-size:.75rem}.table-of-contents ul{list-style:none;padding:0;margin:0}.table-of-contents li{margin-bottom:.125rem}.table-of-contents a{color:var(--tp-text-secondary);text-decoration:none;padding:.25rem .5rem;display:block;border-radius:var(--tp-radius-sm);transition:all var(--tp-transition);font-size:.8125rem;line-height:1.4;border-left:2px solid transparent}.table-of-contents a:hover{color:var(--tp-accent);background:var(--tp-accent-soft);padding-left:.5rem}.table-of-contents a.active{color:var(--tp-accent);font-weight:600;background:var(--tp-accent-soft);border-left-color:var(--tp-accent);border-radius:0 var(--tp-radius-sm) var(--tp-radius-sm)0}.table-of-contents .toc-h2{font-weight:500;padding:.3rem .5rem;border-left:2px solid transparent}.table-of-contents .toc-h3{font-size:.75rem;padding:.2rem .5rem .2rem 1.25rem;color:var(--tp-text-tertiary);border-left:2px solid transparent}.tutorial-tags{display:flex;flex-wrap:wrap;gap:.375rem}.tag{background:var(--tp-bg-tertiary);color:var(--tp-text-secondary);padding:.25rem .5rem;border-radius:var(--tp-radius-sm);font-size:.75rem;font-weight:500;border:0;transition:color var(--tp-transition)}.tag:hover{color:var(--tp-accent);background:var(--tp-accent-soft);transform:none;border-color:transparent}.action-btn,.tutorial-info p{display:flex;align-items:center;color:var(--tp-text-secondary);font-size:.8125rem}.tutorial-info p{margin-bottom:.5rem;justify-content:space-between}.quick-actions .action-buttons{display:flex;flex-direction:column;gap:.5rem}.action-btn{gap:.5rem;padding:.5rem .75rem;background:var(--tp-bg-tertiary);border:1px solid var(--tp-border);border-radius:var(--tp-radius-md);cursor:pointer;transition:all var(--tp-transition);text-decoration:none}.action-btn:hover{border-color:var(--tp-accent);color:var(--tp-accent);background:var(--tp-accent-soft);transform:none}.action-btn i{font-size:.875rem;width:16px;text-align:center}.related-tutorials{padding:3rem 0;background:var(--tp-bg-secondary);border-top:1px solid var(--tp-border)}.related-tutorials .container{max-width:1200px;width:100%;margin:0 auto;padding:0 1.5rem;box-sizing:border-box}.related-card h3,.related-tutorials h2,.tutorial-info strong{color:var(--tp-text-primary);font-weight:600}.related-tutorials h2{font-size:1.25rem;margin-bottom:1.5rem;display:flex;align-items:center;gap:.5rem}.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}.related-card{background:var(--tp-bg-primary);border:1px solid var(--tp-border);border-radius:var(--tp-radius-lg);padding:1.25rem;text-decoration:none;transition:border-color var(--tp-transition);display:flex;flex-direction:column;position:relative}.related-card:hover{border-color:var(--tp-accent);transform:none;box-shadow:none}.related-category{display:inline-flex;align-items:center;gap:.375rem;font-size:.75rem;color:var(--tp-accent);margin-bottom:.5rem}.related-card h3{font-size:1rem;margin:0;flex-grow:1}.related-arrow{position:absolute;bottom:1.25rem;right:1.25rem;color:var(--tp-accent);opacity:0;transition:opacity var(--tp-transition)}.related-card:hover .related-arrow{opacity:1;transform:none}[data-theme=dark] .tutorial-content pre{background:var(--tp-bg-tertiary);border-color:var(--tp-border)}[data-theme=dark] .tutorial-content li code,[data-theme=dark] .tutorial-content p code{background:var(--tp-bg-tertiary);color:var(--tp-accent)}[data-theme=dark] .alert{backdrop-filter:none}[data-theme=dark] .alert-info{background:rgba(52,152,219,.06)}[data-theme=dark] .alert-success{background:rgba(46,204,113,.06)}[data-theme=dark] .alert-warning{background:rgba(241,196,15,.06)}[data-theme=dark] .alert-danger{background:rgba(231,76,60,.06)}[data-theme=dark] .bookmark-btn{border-color:var(--tp-border);color:var(--tp-text-secondary)}[data-theme=dark] .bookmark-btn:hover{border-color:var(--tp-accent);color:var(--tp-accent)}[data-theme=dark] .bookmark-btn.saved{background:var(--tp-accent);color:#fff;border-color:var(--tp-accent)}@media (max-width:1024px){.tutorial-container{grid-template-columns:1fr;gap:2rem}.tutorial-sidebar{position:static;order:-1}}@media (max-width:768px){.tutorial-header{padding:1.5rem 0}.tutorial-meta-header{flex-direction:column;align-items:flex-start;gap:.5rem}.tutorial-content h2{font-size:1.375rem;margin:2rem 0 .75rem}.tutorial-content h3{font-size:1.125rem;margin:1.5rem 0 .5rem}.tutorial-content pre{padding:1rem;border-radius:var(--tp-radius-md)}.tutorial-content code{font-size:.8rem}.alert{padding:.875rem 1rem}.related-tutorials{padding:2rem 0}}@media (max-width:480px){.reading-progress{height:2px}.tutorial-container,.tutorial-header .container{padding:0 1rem}.tutorial-header h1{font-size:clamp(1.25rem,5vw,1.75rem)}.tutorial-content p,.tutorial-header p{font-size:.875rem}.tutorial-content h2{font-size:1.25rem}.tutorial-content h3{font-size:1.0625rem}.tutorial-content pre{font-size:.75rem;padding:.875rem}.action-buttons{flex-direction:row;flex-wrap:wrap}.action-btn{flex:1;justify-content:center;padding:.5rem;font-size:.75rem}.action-btn span{display:none}}.back-to-tutorials:focus-visible,.table-of-contents a:focus-visible,.tutorial-content a:focus-visible{outline:2px solid var(--tp-accent);outline-offset:2px;border-radius:var(--tp-radius-sm)}html{scroll-behavior:smooth}@media print{.back-to-tutorials,.bookmark-btn,.reading-progress,.related-tutorials,.theme-toggle,.tutorial-sidebar{display:none!important}.tutorial-container{grid-template-columns:1fr;gap:0}.tutorial-content{box-shadow:none;border:0;padding:0}.tutorial-header{background:0 0!important;color:#000!important;border-bottom:1px solid #ccc}}.tuto-prev-next{display:flex;justify-content:space-between;gap:1rem;margin:3rem 0;padding:0 1rem}.tuto-nav-link{display:flex;flex-direction:column;padding:1rem 1.5rem;background:rgba(52,152,219,.08);border:1px solid rgba(52,152,219,.2);border-radius:8px;text-decoration:none;transition:all .2s ease;max-width:45%}.tuto-nav-link:hover{background:rgba(52,152,219,.15);border-color:rgba(52,152,219,.4);transform:translateY(-2px)}.tuto-nav-prev{align-items:flex-start}.tuto-nav-next{align-items:flex-end;margin-left:auto}.tuto-nav-direction{font-size:.85rem;color:#3498db;font-weight:600;margin-bottom:.3rem}.tuto-nav-title{font-size:.95rem;color:var(--text-primary, #f8f9fa);font-weight:500}@media (max-width:768px){.tuto-prev-next{flex-direction:column}.tuto-nav-link{max-width:100%}.tuto-nav-next{align-items:flex-start}}.tuto-author{padding:2.5rem 0}.tuto-author-card{display:flex;gap:1.5rem;align-items:flex-start;max-width:700px;margin:0 auto;padding:1.5rem;background:var(--background-card, #2d2d2d);border-radius:12px;border:1px solid var(--border-color, #404040)}.tuto-author-avatar{width:80px;height:80px;border-radius:50%;object-fit:cover;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#3498db,#2c3e50);color:#fff;font-size:1.5rem;font-weight:700;letter-spacing:1px}.tuto-author-label{font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted, #9b9b9b);margin-bottom:.25rem}.tuto-author-name{font-size:1.15rem;font-weight:700;color:var(--text-primary, #f8f9fa);margin-bottom:.5rem}.tuto-author-bio{font-size:.88rem;line-height:1.6;color:var(--text-secondary, #d0d0d0);margin-bottom:.75rem}.tuto-author-links{display:flex;gap:1rem;flex-wrap:wrap}.tuto-author-link{display:inline-flex;align-items:center;gap:5px;font-size:.8rem;color:#3498db;text-decoration:none;font-weight:600}.tuto-author-link:hover{color:#5dade2}@media (max-width:600px){.tuto-author-card{flex-direction:column;align-items:center;text-align:center}.tuto-author-links{justify-content:center}}