:root,.radix-themes{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--yc-topbar-height:56px;--text-2xs:9px;--text-xs:11px;--text-sm:clamp(12px, .5vw + 10px, 13px);--text-base:clamp(13px, .6vw + 10.5px, 15px);--text-lg:clamp(15px, .9vw + 11px, 18px);--text-xl:clamp(18px, 1.6vw + 12px, 24px);--text-2xl:clamp(22px, 2.6vw + 13px, 32px);--text-3xl:clamp(26px, 4.2vw + 14px, 44px);--hero-title-size:clamp(1.75rem, 5.5vw + .5rem, 3rem);--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-section-x:clamp(16px, 5vw, 24px);--space-section-y:clamp(40px, 8vw, 64px);--space-gutter:clamp(12px, 4vw, 16px);--ds-ink:var(--gray-12);--ds-text:var(--gray-11);--ds-text-muted:var(--gray-10);--ds-text-faint:var(--gray-9);--ds-bg:var(--color-background);--ds-surface:var(--color-panel-solid);--ds-surface-sub:var(--gray-3);--ds-surface-hover:var(--gray-2);--ds-overlay:color-mix(in srgb, var(--color-background) 85%, transparent);--ds-border-subtle:var(--gray-4);--ds-border:var(--gray-5);--ds-border-strong:var(--gray-7);--ds-accent:var(--accent-9);--ds-accent-hover:var(--accent-10);--ds-accent-active:var(--accent-8);--ds-accent-text:var(--accent-11);--ds-accent-subtle:var(--accent-3);--ds-accent-bg:var(--accent-2);--ds-accent-border:var(--accent-7);--ds-on-accent:#fff;--ds-success:var(--jade-9);--ds-success-text:var(--jade-11);--ds-warn:var(--amber-9);--ds-warn-text:var(--amber-11);--ds-danger:var(--red-9);--ds-danger-text:var(--red-11);--ds-radius-sm:4px;--ds-radius:6px;--ds-radius-md:8px;--ds-radius-lg:12px;--ds-radius-pill:999px;--ds-shadow-1:0 1px 2px #0006, 0 1px 3px #00000052, inset 0 1px 0 #ffffff08;--ds-shadow-2:0 2px 6px #00000073, 0 10px 28px #00000080, inset 0 1px 0 #ffffff0a;--ds-shadow-3:0 16px 40px #0009, inset 0 1px 0 #ffffff0d;--ds-dur-fast:.12s;--ds-dur:.18s;--ds-dur-slow:.28s;--ds-ease:cubic-bezier(.2, 0, 0, 1);--cat-from:var(--accent-9);--cat-to:var(--accent-11)}.cat-foundations-architecture{--cat-from:var(--violet-9);--cat-to:var(--violet-11)}.cat-prompting-icl{--cat-from:var(--blue-9);--cat-to:var(--blue-11)}.cat-rag-retrieval{--cat-from:var(--cyan-9);--cat-to:var(--cyan-11)}.cat-fine-tuning{--cat-from:var(--jade-9);--cat-to:var(--jade-11)}.cat-agents-tools{--cat-from:var(--amber-9);--cat-to:var(--amber-11)}.cat-evals-testing{--cat-from:var(--crimson-9);--cat-to:var(--crimson-11)}.cat-infra-deployment{--cat-from:var(--indigo-9);--cat-to:var(--indigo-11)}.cat-safety-alignment{--cat-from:var(--orange-9);--cat-to:var(--orange-11)}.cat-multimodal-ai{--cat-from:var(--purple-9);--cat-to:var(--purple-11)}.cat-applied-production{--cat-from:var(--slate-9);--cat-to:var(--slate-11)}.cat-cloud-devops{--cat-from:var(--sky-9);--cat-to:var(--sky-11)}
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14px}.yc-topbar-signin--pill:hover{background:var(--ds-surface-hover);border-color:var(--ds-border-strong)}.yc-topbar-progress{transform-origin:0;background:var(--ds-accent);z-index:1;pointer-events:none;width:100%;height:2px;position:absolute;bottom:0;left:0}.reading-progress{background:var(--ds-accent);z-index:100;height:2px;transition:width .1s linear;position:fixed;top:0;left:0}.hero{padding:var(--space-section-y) var(--space-section-x) var(--space-7);text-align:center;border-bottom:1px solid var(--ds-border-subtle);position:relative}.hero-title{font-size:var(--hero-title-size);letter-spacing:-.03em;color:var(--ds-ink);margin:0 0 16px;font-weight:700;line-height:1.08;position:relative}.hero-subtitle{font-size:var(--text-base);color:var(--ds-text);max-width:560px;margin:0 auto;line-height:1.6;position:relative}.hero-content{max-width:680px;margin:0 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var(--color-background) 85%, transparent);-webkit-backdrop-filter:blur(12px);flex-wrap:wrap;justify-content:center;gap:8px;margin:0 auto;padding:12px 24px;display:flex;position:sticky}.cat-nav::-webkit-scrollbar{display:none}.cat-nav-pill{border-radius:var(--ds-radius-pill);background:var(--ds-surface);border:1px solid var(--ds-border);color:var(--ds-text-muted);cursor:pointer;transition:color var(--ds-dur) var(--ds-ease), border-color var(--ds-dur) var(--ds-ease), background var(--ds-dur) var(--ds-ease);align-items:center;gap:6px;padding:6px 12px;font-size:11px;font-weight:600;display:inline-flex}.cat-nav-pill:hover{border-color:var(--ds-border-strong);color:var(--ds-ink)}.cat-nav-pill--active{background:var(--ds-accent-bg);border-color:var(--ds-accent-border);color:var(--ds-accent-text)}.cat-nav-icon{font-size:13px}.cat-nav-count{color:var(--ds-text-faint);font-variant-numeric:tabular-nums;font-size:10px}.article-card-level{text-transform:uppercase;letter-spacing:.04em;border-radius:4px;flex-shrink:0;padding:1px 6px;font-size:9px;font-weight:600}.article-card-level--beginner{color:var(--jade-11);background:var(--jade-a3)}.article-card-level--intermediate{color:var(--amber-11);background:var(--amber-a3)}.article-card-level--advanced{color:var(--crimson-11);background:var(--crimson-a3)}.article-card-time{color:var(--ds-text-faint);font-variant-numeric:tabular-nums;white-space:nowrap;flex-shrink:0;font-size:10px;font-weight:500}.cat-card-footer{color:var(--gray-8);border-top:1px solid #ffffff0a;align-items:center;gap:6px;margin-top:12px;padding-top:10px;font-size:11px;display:flex}.cat-card-footer:before{content:"";border:1.5px solid var(--gray-7);background:linear-gradient(to bottom, var(--gray-7), var(--gray-7)) no-repeat center 1.5px / 1.5px 4px, linear-gradient(to right, var(--gray-7), var(--gray-7)) no-repeat center center / 3.5px 1.5px;border-radius:50%;flex-shrink:0;width:14px;height:14px;position:relative}.article-banner{background:linear-gradient(180deg, color-mix(in srgb, var(--cat-from) 15%, var(--color-background)), var(--color-background));padding:24px 24px 32px;position:relative}.article-banner-inner{max-width:1060px;margin:0 auto}.article-banner-breadcrumb{color:var(--gray-9);align-items:center;gap:8px;margin-bottom:16px;font-size:12px;display:flex}.article-banner-breadcrumb a{color:var(--gray-9);text-decoration:none;transition:color .15s}.article-banner-breadcrumb a:hover{color:var(--accent-11)}.article-banner-breadcrumb 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var(--cat-to));color:var(--gray-1)}.badge-pill--difficulty{text-transform:uppercase;letter-spacing:.05em;font-size:10px;font-weight:700}.badge-pill--beginner{background:var(--jade-a3);border:1px solid var(--jade-a4);color:var(--jade-11)}.badge-pill--intermediate{background:var(--amber-a3);border:1px solid var(--amber-a4);color:var(--amber-11)}.badge-pill--advanced{background:var(--crimson-a3);border:1px solid var(--crimson-a4);color:var(--crimson-11)}.badge-pill--glass{color:var(--gray-10);-webkit-backdrop-filter:blur(8px);background:#ffffff0f;border:1px solid #ffffff14}.article-grid{grid-template-columns:1fr 240px;gap:40px;max-width:1060px;margin:0 auto;padding:24px 24px 64px;display:grid}.toc-sidebar{top:calc(var(--yc-topbar-height) + 12px);max-height:calc(100vh - var(--yc-topbar-height) - 32px);border-left:none;padding:12px 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.2s;display:block}.source-card:hover{background:#ffffff0a;transform:translate(4px);box-shadow:0 4px 16px #0003}.source-card-title{color:var(--gray-12);margin-bottom:4px;font-size:13.5px;font-weight:600;line-height:1.4}.source-card-meta{color:var(--gray-8);flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;display:flex}.source-card-venue{color:var(--gray-9);text-transform:uppercase;letter-spacing:.03em;background:#ffffff0f;border:1px solid #ffffff14;border-radius:99px;padding:2px 8px;font-size:10px;font-weight:600}.article-nav{border-top:1px solid var(--gray-3);grid-template-columns:1fr 1fr;gap:12px;margin-top:3em;padding-top:2em;display:grid}.article-nav-card{background:linear-gradient(135deg, color-mix(in srgb, var(--cat-from) 5%, transparent), color-mix(in srgb, var(--cat-to) 3%, transparent));color:inherit;border:1px solid #ffffff0d;border-radius:12px;flex-direction:column;gap:4px;padding:16px;text-decoration:none;transition:all .2s;display:flex}.article-nav-card:hover{background:linear-gradient(135deg, color-mix(in srgb, var(--cat-from) 10%, transparent), color-mix(in srgb, var(--cat-to) 6%, transparent));border-color:color-mix(in srgb, var(--cat-from) 20%, transparent);transform:translateY(-2px);box-shadow:0 8px 24px #0003}.article-nav-card--next{text-align:right}.article-nav-label{text-transform:uppercase;letter-spacing:.08em;color:var(--gray-7);font-size:10px;font-weight:600}.article-nav-title{color:var(--gray-11);font-size:14px;font-weight:600;line-height:1.3}.article-nav-card:hover .article-nav-title{color:var(--gray-12)}.scroll-to-top{-webkit-backdrop-filter:blur(12px);width:40px;height:40px;color:var(--gray-11);cursor:pointer;z-index:41;opacity:0;pointer-events:none;background:#ffffff14;border:1px solid #ffffff1a;border-radius:50%;justify-content:center;align-items:center;font-size:18px;transition:all .3s;display:flex;position:fixed;bottom:24px;right:24px;transform:translateY(10px)}.scroll-to-top--visible{opacity:1;pointer-events:auto;transform:translateY(0)}.scroll-to-top:hover{background:#ffffff1f;transform:translateY(-2px)}.toc-mobile-trigger{-webkit-backdrop-filter:blur(12px);color:var(--gray-11);cursor:pointer;z-index:40;letter-spacing:.03em;background:#ffffff14;border:1px solid #ffffff1a;border-radius:99px;padding:8px 20px;font-size:12px;font-weight:600;transition:all .2s;display:none;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toc-mobile-trigger:hover{background:#ffffff1f}.toc-mobile-backdrop{-webkit-backdrop-filter:blur(4px);z-index:60;background:#0009;display:none;position:fixed;inset:0}.toc-mobile-backdrop--open{display:block}.toc-mobile-drawer{background:var(--gray-2);border-top:1px solid var(--gray-4);z-index:70;border-radius:16px 16px 0 0;max-height:70vh;padding:20px 16px 32px;transition:transform 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#ffffff1a;border-radius:99px;padding:8px 20px;font-size:12px;font-weight:600;transition:all .2s;display:inline-flex}.no-results-clear:hover{background:#ffffff1a;border-color:#ffffff26}.search-suggestions{flex-wrap:wrap;justify-content:center;gap:6px;max-width:1200px;margin:0 auto;padding:0 24px 12px;animation:.25s both fade-up;display:flex}.search-suggestion-pill{color:var(--gray-9);cursor:pointer;background:#ffffff0a;border:1px solid #ffffff0f;border-radius:99px;align-items:center;padding:5px 12px;font-size:11px;font-weight:500;transition:all .15s;display:inline-flex}.search-suggestion-pill:hover{color:var(--accent-11);background:var(--accent-3);border-color:var(--accent-7)}.search-loading{flex-direction:column;gap:8px;max-width:1200px;margin:0 auto;padding:24px 24px 64px;display:flex}.search-skeleton-card{background:#ffffff06;border:1px solid #ffffff0f;border-radius:12px;padding:16px 20px}.search-skeleton-header{background:linear-gradient(90deg, var(--gray-3) 25%, var(--gray-4) 50%, var(--gray-3) 75%);background-size:200% 100%;border-radius:6px;width:40%;height:12px;margin-bottom:12px;animation:1.5s ease-in-out infinite search-shimmer}.search-skeleton-line{background:linear-gradient(90deg, var(--gray-3) 25%, var(--gray-4) 50%, var(--gray-3) 75%);background-size:200% 100%;border-radius:5px;width:100%;height:10px;margin-bottom:8px;animation:1.5s ease-in-out infinite search-shimmer}.search-skeleton-line--short{width:65%}.search-skeleton-card:nth-child(2) .search-skeleton-header,.search-skeleton-card:nth-child(2) .search-skeleton-line{animation-delay:.15s}.search-skeleton-card:nth-child(3) .search-skeleton-header,.search-skeleton-card:nth-child(3) .search-skeleton-line{animation-delay:.3s}.search-skeleton-card:nth-child(4) .search-skeleton-header,.search-skeleton-card:nth-child(4) .search-skeleton-line{animation-delay:.45s}@keyframes search-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.search-result-card--focused{background:var(--ds-surface-hover);border-color:var(--ds-accent-border);box-shadow:var(--ds-shadow-2)}.search-results{flex-direction:column;gap:8px;max-width:1200px;margin:0 auto;padding:0 24px 64px;display:flex}.search-result-card{color:inherit;border-radius:var(--ds-radius-lg);background:var(--ds-surface);border:1px solid var(--ds-border);box-shadow:var(--ds-shadow-1);transition:border-color var(--ds-dur) var(--ds-ease), box-shadow var(--ds-dur) var(--ds-ease), transform var(--ds-dur-fast) var(--ds-ease);padding:16px 20px;text-decoration:none;display:block}.search-result-card:hover{background:var(--ds-surface);border-color:var(--ds-accent-border);box-shadow:var(--ds-shadow-2);transform:translateY(-1px)}.search-result-header{align-items:center;gap:10px;margin-bottom:6px;display:flex}.search-result-type{text-transform:uppercase;letter-spacing:.05em;flex-shrink:0;padding:2px 8px!important;font-size:10px!important}.search-result-cat{padding:2px 8px!important;font-size:9px!important}.search-result-title{color:var(--ds-ink);font-size:14px;font-weight:600;line-height:1.3}.search-result-snippet{color:var(--ds-text);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:13px;line-height:1.6;display:-webkit-box;overflow:hidden}.search-result-snippet mark{background:var(--accent-3);color:var(--accent-12);border-radius:2px;padding:1px 2px}.search-result-lesson{color:var(--ds-text-faint);margin-top:6px;font-size:11px;font-weight:500}.related-section{margin-top:3em;padding-top:2em}.related-heading{text-transform:uppercase;letter-spacing:.1em;color:var(--gray-8);align-items:center;gap:12px;margin-bottom:16px;font-size:11px;font-weight:700;display:flex}.related-heading:before,.related-heading:after{content:"";background:linear-gradient(90deg, transparent, var(--gray-5), transparent);flex:1;height:1px}.related-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.related-card{background:linear-gradient(135deg, color-mix(in srgb, 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4px;display:flex}.audio-info-chapter{color:var(--gray-12);white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:600;overflow:hidden}.audio-info-time{color:var(--gray-8);font-variant-numeric:tabular-nums;font-size:10px}.audio-seek-wrap{flex:1;align-items:center;min-width:80px;display:flex}.audio-seek{appearance:none;background:linear-gradient(to right, var(--accent-9) 0%, var(--accent-9) var(--progress,0%), #ffffff1a var(--progress,0%), #ffffff1a 100%);cursor:pointer;border-radius:2px;outline:none;width:100%;height:4px;transition:height .15s}.audio-seek:hover{height:6px}.audio-seek::-webkit-slider-thumb{-webkit-appearance:none;background:var(--gray-12);cursor:pointer;opacity:.7;border-radius:50%;width:12px;height:12px;transition:opacity .15s,box-shadow .15s;box-shadow:0 0 4px #0000004d}.audio-seek:hover::-webkit-slider-thumb{opacity:1;box-shadow:0 0 6px var(--accent-7)}.audio-seek::-moz-range-thumb{background:var(--gray-12);cursor:pointer;border:none;border-radius:50%;width:12px;height:12px;box-shadow:0 0 4px #0000004d}.audio-chapters-backdrop{-webkit-backdrop-filter:blur(4px);z-index:55;background:#0009;position:fixed;inset:0}.audio-chapters-panel{-webkit-backdrop-filter:blur(16px);z-index:56;background:#0f0f0ff2;border-top:1px solid #ffffff14;border-radius:16px 16px 0 0;max-height:50vh;padding:16px;animation:.25s slide-up;position:fixed;bottom:56px;left:0;right:0;overflow-y:auto}@keyframes slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.audio-chapters-handle{background:var(--gray-5);border-radius:2px;width:40px;height:4px;margin:0 auto 12px}.audio-chapters-title{text-transform:uppercase;letter-spacing:.1em;color:var(--gray-8);margin-bottom:12px;font-size:11px;font-weight:700}.audio-chapter-item{width:100%;color:var(--gray-10);cursor:pointer;text-align:left;background:0 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